commit bash-20130308 snapshot

diff --git a/CWRU/CWRU.chlog b/CWRU/CWRU.chlog
index a7a8b9c8d85535eded136a3662b0cbc4bca99d8f..fef5b38d9e0bebda61ae7fe59f93d0d19fc65d2f 100644 (file)
--- a/CWRU/CWRU.chlog
+++ b/CWRU/CWRU.chlog
@@ -4701,3 +4701,50 @@ lib/readline/display.c
          two-part copy to a single call to _rl_output_some_chars (change of
          2/16)
 
+                                   3/4
+                                   ---
+Makefile.in,doc/Makefile.in
+       - PACKAGE_TARNAME, docdir: new variables substituted by autoconf
+       - OTHER_DOCS,OTHER_INSTALLED_DOCS: new variables with auxiliary
+         documentation files to be installed into $(docdir)
+       - install: add new rule to install $(OTHER_DOCS)
+       - uninstall: add new rule to uninstall $(docdir)/$(OTHER_INSTALLED_DOCS)
+
+doc/bash.1
+       - add URL to `POSIX' file in `SEE ALSO' section; put pointer to that
+         section in --posix and set -o posix descriptions
+
+examples/
+       - removed around 110 examples at the request of the FSF due to copyright
+         issues
+
+                                   3/5
+                                   ---
+builtins/setattr.def
+       - readonly: modified help text slightly to make it clearer that
+         functions aren't changed or displayed unless the -f option is given.
+         Report from <gotmynick@gmail.com>
+
+[bash-4.3-alpha frozen]
+
+                                   3/9
+                                   ---
+include/typemax.h
+       - SIZE_MAX: define to 65535 (Posix minimum maximum) if not defined
+
+parse.y
+       - include "typemax.h" for possible SIZE_MAX definition, make sure we
+         include it after shell.h
+
+{braces,expr}.c
+       - include "typemax.h" for possible INTMAX_MIN and INTMAX_MAX definitions
+
+                                  3/10
+                                  ----
+bashline.c
+       - bash_default_completion: make sure completion type of `!' (same as
+         TAB but with show-all-if-ambiguous set) and glob-word-completion
+         sets rl_filename_completion_desired to 0 so extra backslashes don't
+         get inserted by `quoting' the completion.  We can't kill all the
+         matches because show-all-if-ambiguous needs them.   Bug report from
+         Marcel (Felix) Giannelia <info@skeena.net>

diff --git a/CWRU/CWRU.chlog~ b/CWRU/CWRU.chlog~
index 497517c7d4b5767f64bc849009eb76c7db7b0cb7..d65b9c0df31cb590686920a5290dcc722e916e9a 100644 (file)
--- a/CWRU/CWRU.chlog~
+++ b/CWRU/CWRU.chlog~
@@ -4692,3 +4692,58 @@ doc/bashref.texi
 
 quit.h
        - include "sig.h" for sig_atomic_t
+
+lib/readline/display.c
+       - update_line: when inserting one or more characters at the end of
+         the display line in a non-multibyte environment, just write from the
+         first difference to the end of the line and return. We don't have
+         to adjust _rl_last_c_pos.  This is needed to adjust from the old
+         two-part copy to a single call to _rl_output_some_chars (change of
+         2/16)
+
+                                   3/4
+                                   ---
+Makefile.in,doc/Makefile.in
+       - PACKAGE_TARNAME, docdir: new variables substituted by autoconf
+       - OTHER_DOCS,OTHER_INSTALLED_DOCS: new variables with auxiliary
+         documentation files to be installed into $(docdir)
+       - install: add new rule to install $(OTHER_DOCS)
+       - uninstall: add new rule to uninstall $(docdir)/$(OTHER_INSTALLED_DOCS)
+
+doc/bash.1
+       - add URL to `POSIX' file in `SEE ALSO' section; put pointer to that
+         section in --posix and set -o posix descriptions
+
+examples/
+       - removed around 110 examples at the request of the FSF due to copyright
+         issues
+
+                                   3/5
+                                   ---
+builtins/setattr.def
+       - readonly: modified help text slightly to make it clearer that
+         functions aren't changed or displayed unless the -f option is given.
+         Report from <gotmynick@gmail.com>
+
+[bash-4.3-alpha frozen]
+
+                                   3/9
+                                   ---
+include/typemax.h
+       - SIZE_MAX: define to 65535 (Posix minimum maximum) if not defined
+
+parse.y
+       - include "typemax.h" for possible SIZE_MAX definition, make sure we
+         include it after shell.h
+
+{braces,expr}.c
+       - include "typemax.h" for possible INTMAX_MIN and INTMAX_MAX definitions
+
+                                  3/10
+                                  ----
+bashline.c
+       - bash_default_completion: make sure completion type of `!' (same as
+         TAB but with show-all-if-ambiguous set) and glob-word-completion
+         sets rl_filename_completion_desired to 0 so extra backslashes don't
+         get inserted by `quoting' the completion.  Bug report from
+         Marcel (Felix) Giannelia <info@skeena.net>

diff --git a/MANIFEST b/MANIFEST
index 7784134c960a2eff66108cd55a6c93438b16f35a..ab36a7152d31433e8655fb8cc3cbbebedb7854a3 100644 (file)
--- a/MANIFEST
+++ b/MANIFEST
@@ -965,6 +965,7 @@ tests/jobs1.sub             f
 tests/jobs2.sub                f
 tests/jobs3.sub                f
 tests/jobs4.sub                f
+tests/jobs5.sub                f
 tests/jobs.right       f
 tests/lastpipe.right   f
 tests/lastpipe.tests   f

diff --git a/MANIFEST.doc b/MANIFEST.doc
index 736ad5b5e7f69293476666437a3e4148209d0bcf..ab9507c4c277eb55b1b2e3163b45b0929a23b469 100644 (file)
--- a/MANIFEST.doc
+++ b/MANIFEST.doc
@@ -22,3 +22,4 @@ doc/article.pdf       f
 doc/bash.pdf   f
 doc/bashref.pdf        f
 doc/rose94.pdf f
+doc/aosa-bash.pdf      f

diff --git a/Makefile.in b/Makefile.in
index a59e8db2ca146235101e9bed08fdfff8eb96fc64..a6d8e66083eda3664b6ad3e1e136d8c24722e6e1 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -26,6 +26,8 @@ PACKAGE_NAME = @PACKAGE_NAME@
 PACKAGE_STRING = @PACKAGE_STRING@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+
 # Include some boilerplate Gnu makefile definitions.
 prefix = @prefix@
 
@@ -40,6 +42,8 @@ includedir = @includedir@
 datadir = @datadir@
 localedir = @localedir@
 
+docdir = @docdir@
+
 mandir = @mandir@
 manpfx = man
 
@@ -534,6 +538,10 @@ CREATED_MAKEFILES = Makefile builtins/Makefile doc/Makefile \
                    examples/loadables/perl/Makefile support/Makefile \
                    lib/intl/Makefile po/Makefile po/Makefile.in
 
+OTHER_DOCS = $(srcdir)/CHANGES $(srcdir)/COMPAT $(srcdir)/NEWS $(srcdir)/POSIX \
+       $(srcdir)/RBASH $(srcdir)/README
+OTHER_INSTALLED_DOCS = CHANGES COMPAT NEWS POSIX RBASH README
+
 # Keep GNU Make from exporting the entire environment for small machines.
 .NOEXPORT:
 
@@ -739,6 +747,7 @@ info dvi ps: force
 
 force:
 
+# unused
 TAGS:  $(SOURCES) $(BUILTIN_C_SRC) $(LIBRARY_SOURCE)
        etags $(SOURCES) $(BUILTIN_C_SRC) $(LIBRARY_SOURCE)
 
@@ -751,11 +760,13 @@ installdirs:
        @${SHELL} $(SUPPORT_SRC)mkinstalldirs $(DESTDIR)$(bindir)
        @${SHELL} $(SUPPORT_SRC)mkinstalldirs $(DESTDIR)$(man1dir)
        @${SHELL} $(SUPPORT_SRC)mkinstalldirs $(DESTDIR)$(infodir)
+       @${SHELL} $(SUPPORT_SRC)mkinstalldirs $(DESTDIR)$(docdir)
        -( cd $(PO_DIR) ; $(MAKE) $(MFLAGS) DESTDIR=$(DESTDIR) $@ )
 
 install:       .made installdirs
        $(INSTALL_PROGRAM) $(INSTALLMODE) $(Program) $(DESTDIR)$(bindir)/$(Program)
        $(INSTALL_SCRIPT) $(INSTALLMODE2) bashbug $(DESTDIR)$(bindir)/bashbug
+       $(INSTALL_DATA) $(OTHER_DOCS) $(docdir)
        -( cd $(DOCDIR) ; $(MAKE) $(MFLAGS) \
                man1dir=$(man1dir) man1ext=$(man1ext) \
                man3dir=$(man3dir) man3ext=$(man3ext) \
@@ -770,6 +781,7 @@ install-strip:
 
 uninstall:     .made
        $(RM) $(DESTDIR)$(bindir)/$(Program) $(DESTDIR)$(bindir)/bashbug
+       -( cd $(DESTDIR)$(docdir) && ${RM} ${OTHER_INSTALLED_DOCS} )
        -( cd $(DOCDIR) ; $(MAKE) $(MFLAGS) \
                man1dir=$(man1dir) man1ext=$(man1ext) \
                man3dir=$(man3dir) man3ext=$(man3ext) \

diff --git a/autom4te.cache/output.3 b/autom4te.cache/output.3
index 493460b5be73d5915d651b00418505d0cb6ddb1f..eae5c67216c58b81ca17727148a3e0bf4fc6b99e 100644 (file)
--- a/autom4te.cache/output.3
+++ b/autom4te.cache/output.3
@@ -1,12 +1,14 @@
 @%:@! /bin/sh
 @%:@ From configure.ac for Bash 4.3, version 4.056.
 @%:@ Guess values for system-dependent variables and create Makefiles.
-@%:@ Generated by GNU Autoconf 2.69 for bash 4.3-alpha.
+@%:@ Generated by GNU Autoconf 2.68 for bash 4.3-alpha.
 @%:@
 @%:@ Report bugs to <bug-bash@gnu.org>.
 @%:@ 
 @%:@ 
-@%:@ Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+@%:@ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+@%:@ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+@%:@ Foundation, Inc.
 @%:@ 
 @%:@ 
 @%:@ This configure script is free software; the Free Software Foundation
@@ -135,31 +137,6 @@ export LANGUAGE
 # CDPATH.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
-# Use a proper internal environment variable to ensure we don't fall
-  # into an infinite loop, continuously re-executing ourselves.
-  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
-    _as_can_reexec=no; export _as_can_reexec;
-    # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in @%:@ ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-as_fn_exit 255
-  fi
-  # We don't want this to propagate to other subprocesses.
-          { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
   as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
   emulate sh
@@ -193,8 +170,7 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
 else
   exitcode=1; echo positional parameters were not saved.
 fi
-test x\$exitcode = x0 || exit 1
-test -x / || exit 1"
+test x\$exitcode = x0 || exit 1"
   as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
   as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
   eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -239,25 +215,21 @@ IFS=$as_save_IFS
 
 
       if test "x$CONFIG_SHELL" != x; then :
-  export CONFIG_SHELL
-             # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in @%:@ ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-exit 255
+  # We cannot yet assume a decent shell, so we have to provide a
+       # neutralization value for shells without unset; and this also
+       # works around shells that cannot unset nonexistent variables.
+       # Preserve -v and -x to the replacement shell.
+       BASH_ENV=/dev/null
+       ENV=/dev/null
+       (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+       export CONFIG_SHELL
+       case $- in @%:@ ((((
+         *v*x* | *x*v* ) as_opts=-vx ;;
+         *v* ) as_opts=-v ;;
+         *x* ) as_opts=-x ;;
+         * ) as_opts= ;;
+       esac
+       exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
 fi
 
     if test x$as_have_required = xno; then :
@@ -360,14 +332,6 @@ $as_echo X"$as_dir" |
 
 
 } @%:@ as_fn_mkdir_p
-
-@%:@ as_fn_executable_p FILE
-@%:@ -----------------------
-@%:@ Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} @%:@ as_fn_executable_p
 @%:@ as_fn_append VAR VALUE
 @%:@ ----------------------
 @%:@ Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -489,10 +453,6 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   chmod +x "$as_me.lineno" ||
     { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
 
-  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
-  # already done that, so ensure we don't try to do so again and fall
-  # in an infinite loop.  This has already happened in practice.
-  _as_can_reexec=no; export _as_can_reexec
   # Don't try to exec as it changes $[0], causing all sort of problems
   # (the dirname of $[0] is not the place where we might find the
   # original and so on.  Autoconf is especially sensitive to this).
@@ -527,16 +487,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
   fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -548,8 +508,28 @@ else
   as_mkdir_p=false
 fi
 
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+       test -d "$1/.";
+      else
+       case $1 in @%:@(
+       -*)set "./$1";;
+       esac;
+       case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in @%:@((
+       ???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -1307,6 +1287,8 @@ target=$target_alias
 if test "x$host_alias" != x; then
   if test "x$build_alias" = x; then
     cross_compiling=maybe
+    $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used" >&2
   elif test "x$build_alias" != "x$host_alias"; then
     cross_compiling=yes
   fi
@@ -1647,9 +1629,9 @@ test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
 bash configure 4.3-alpha
-generated by GNU Autoconf 2.69
+generated by GNU Autoconf 2.68
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1725,7 +1707,7 @@ $as_echo "$ac_try_echo"; } >&5
         test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
         test "$cross_compiling" = yes ||
-        test -x conftest$ac_exeext
+        $as_test_x conftest$ac_exeext
        }; then :
   ac_retval=0
 else
@@ -2129,8 +2111,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(($2) >= 0)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -2146,8 +2127,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(($2) <= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -2173,8 +2153,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(($2) < 0)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -2190,8 +2169,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(($2) >= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -2225,8 +2203,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(($2) <= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -2356,7 +2333,7 @@ This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
 
@@ -3395,7 +3372,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3435,7 +3412,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_CC="gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3488,7 +3465,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3529,7 +3506,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
        continue
@@ -3587,7 +3564,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3631,7 +3608,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4077,7 +4054,8 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdarg.h>
 #include <stdio.h>
-struct stat;
+#include <sys/types.h>
+#include <sys/stat.h>
 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 struct buf { int x; };
 FILE * (*rcsopen) (struct buf *, struct stat *, int);
@@ -4361,7 +4339,7 @@ do
     for ac_prog in grep ggrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_GREP" || continue
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
 # Check for GNU ac_path_GREP and select it if it is found.
   # Check for GNU $ac_path_GREP
 case `"$ac_path_GREP" --version 2>&1` in
@@ -4427,7 +4405,7 @@ do
     for ac_prog in egrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_EGREP" || continue
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
   # Check for GNU $ac_path_EGREP
 case `"$ac_path_EGREP" --version 2>&1` in
@@ -4634,8 +4612,8 @@ else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-#         define __EXTENSIONS__ 1
-          $ac_includes_default
+#        define __EXTENSIONS__ 1
+         $ac_includes_default
 int
 main ()
 {
@@ -4863,8 +4841,6 @@ _ACEOF
 esac
 rm -rf conftest*
   fi
-
-  
 fi
 
 
@@ -5504,7 +5480,7 @@ case $as_dir/ in @%:@((
     # by default.
     for ac_prog in ginstall scoinst install; do
       for ac_exec_ext in '' $ac_executable_extensions; do
-       if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+       if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
          if test $ac_prog = install &&
            grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
            # AIX install.  It has an incompatible calling convention.
@@ -5577,7 +5553,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_AR="${ac_tool_prefix}ar"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5617,7 +5593,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_AR="ar"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5670,7 +5646,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5710,7 +5686,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_RANLIB="ranlib"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5763,7 +5739,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_YACC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5896,11 +5872,11 @@ else
 int
 main ()
 {
-
+/* FIXME: Include the comments suggested by Paul. */
 #ifndef __cplusplus
-  /* Ultrix mips cc rejects this sort of thing.  */
+  /* Ultrix mips cc rejects this.  */
   typedef int charset[2];
-  const charset cs = { 0, 0 };
+  const charset cs;
   /* SunOS 4.1.1 cc rejects this.  */
   char const *const *pcpcc;
   char **ppc;
@@ -5917,9 +5893,8 @@ main ()
   ++pcpcc;
   ppc = (char**) pcpcc;
   pcpcc = (char const *const *) ppc;
-  { /* SCO 3.2v4 cc rejects this sort of thing.  */
-    char tx;
-    char *t = &tx;
+  { /* SCO 3.2v4 cc rejects this.  */
+    char *t;
     char const *s = 0 ? (char *) 0 : (char const *) 0;
 
     *t++ = 0;
@@ -5935,10 +5910,10 @@ main ()
     iptr p = 0;
     ++p;
   }
-  { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
+  { /* AIX XL C 1.02.0.0 rejects this saying
        "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
-    struct s { int j; const int *ap[3]; } bx;
-    struct s *b = &bx; b->j = 5;
+    struct s { int j; const int *ap[3]; };
+    struct s *b; b->j = 5;
   }
   { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
     const int foo = 10;
@@ -6291,8 +6266,7 @@ static int test_array @<:@1 - 2 * !((0 < ((DBL_MAX_EXP < LDBL_MAX_EXP)
                   - (LDBL_MANT_DIG < DBL_MANT_DIG)))
            && (int) LDBL_EPSILON == 0
          )@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -6348,8 +6322,7 @@ int
 main ()
 {
 static int test_array @<:@1 - 2 * !(((char) -1) < 0)@:>@;
-test_array @<:@0@:>@ = 0;
-return test_array @<:@0@:>@;
+test_array @<:@0@:>@ = 0
 
   ;
   return 0;
@@ -6567,7 +6540,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_path_GMSGFMT="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6931,20 +6904,23 @@ else
 /* end confdefs.h.  */
 $ac_includes_default
 int
-find_stack_direction (int *addr, int depth)
+find_stack_direction ()
 {
-  int dir, dummy = 0;
-  if (! addr)
-    addr = &dummy;
-  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
-  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
-  return dir + dummy;
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
 }
 
 int
-main (int argc, char **argv)
+main ()
 {
-  return find_stack_direction (0, argc + !argv + 20) < 0;
+  return find_stack_direction () < 0;
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -8302,7 +8278,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_INTLBISON="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -9446,20 +9422,23 @@ else
 /* end confdefs.h.  */
 $ac_includes_default
 int
-find_stack_direction (int *addr, int depth)
+find_stack_direction ()
 {
-  int dir, dummy = 0;
-  if (! addr)
-    addr = &dummy;
-  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
-  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
-  return dir + dummy;
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
 }
 
 int
-main (int argc, char **argv)
+main ()
 {
-  return find_stack_direction (0, argc + !argv + 20) < 0;
+  return find_stack_direction () < 0;
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -16416,16 +16395,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
   fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -16485,16 +16464,28 @@ else
   as_mkdir_p=false
 fi
 
-
-@%:@ as_fn_executable_p FILE
-@%:@ -----------------------
-@%:@ Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} @%:@ as_fn_executable_p
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+       test -d "$1/.";
+      else
+       case $1 in @%:@(
+       -*)set "./$1";;
+       esac;
+       case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in @%:@((
+       ???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -16516,7 +16507,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # values after options handling.
 ac_log="
 This file was extended by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -16582,10 +16573,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
 bash config.status 4.3-alpha
-configured by $0, generated by GNU Autoconf 2.69,
+configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -16674,7 +16665,7 @@ fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
-  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
   \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'

diff --git a/autom4te.cache/requests b/autom4te.cache/requests
index 8307092b9039115252f2e875f5756a27f5ed1142..a690d74121fb4f40fc31f7f36e31acec0948a38d 100644 (file)
--- a/autom4te.cache/requests
+++ b/autom4te.cache/requests
@@ -15,55 +15,55 @@
                         'configure.in'
                       ],
                       {
-                        '_LT_AC_TAGCONFIG' => 1,
                         'AM_PROG_F77_C_O' => 1,
-                        'AC_INIT' => 1,
+                        '_LT_AC_TAGCONFIG' => 1,
                         'm4_pattern_forbid' => 1,
-                        '_AM_COND_IF' => 1,
+                        'AC_INIT' => 1,
                         'AC_CANONICAL_TARGET' => 1,
-                        'AC_SUBST' => 1,
+                        '_AM_COND_IF' => 1,
                         'AC_CONFIG_LIBOBJ_DIR' => 1,
-                        'AC_FC_SRCEXT' => 1,
+                        'AC_SUBST' => 1,
                         'AC_CANONICAL_HOST' => 1,
+                        'AC_FC_SRCEXT' => 1,
                         'AC_PROG_LIBTOOL' => 1,
                         'AM_INIT_AUTOMAKE' => 1,
-                        'AM_PATH_GUILE' => 1,
                         'AC_CONFIG_SUBDIRS' => 1,
+                        'AM_PATH_GUILE' => 1,
                         'AM_AUTOMAKE_VERSION' => 1,
                         'LT_CONFIG_LTDL_DIR' => 1,
-                        'AC_REQUIRE_AUX_FILE' => 1,
                         'AC_CONFIG_LINKS' => 1,
-                        'm4_sinclude' => 1,
+                        'AC_REQUIRE_AUX_FILE' => 1,
                         'LT_SUPPORTED_TAG' => 1,
+                        'm4_sinclude' => 1,
                         'AM_MAINTAINER_MODE' => 1,
                         'AM_NLS' => 1,
                         'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
-                        'AM_MAKEFILE_INCLUDE' => 1,
                         '_m4_warn' => 1,
+                        'AM_MAKEFILE_INCLUDE' => 1,
                         'AM_PROG_CXX_C_O' => 1,
-                        '_AM_COND_ENDIF' => 1,
                         '_AM_MAKEFILE_INCLUDE' => 1,
+                        '_AM_COND_ENDIF' => 1,
                         'AM_ENABLE_MULTILIB' => 1,
                         'AM_SILENT_RULES' => 1,
                         'AM_PROG_MOC' => 1,
                         'AC_CONFIG_FILES' => 1,
-                        'include' => 1,
                         'LT_INIT' => 1,
-                        'AM_PROG_AR' => 1,
+                        'include' => 1,
                         'AM_GNU_GETTEXT' => 1,
+                        'AM_PROG_AR' => 1,
                         'AC_LIBSOURCE' => 1,
-                        'AM_PROG_FC_C_O' => 1,
                         'AC_CANONICAL_BUILD' => 1,
+                        'AM_PROG_FC_C_O' => 1,
                         'AC_FC_FREEFORM' => 1,
                         'AH_OUTPUT' => 1,
-                        '_AM_SUBST_NOTMAKE' => 1,
                         'AC_CONFIG_AUX_DIR' => 1,
-                        'sinclude' => 1,
-                        'AM_PROG_CC_C_O' => 1,
+                        '_AM_SUBST_NOTMAKE' => 1,
                         'm4_pattern_allow' => 1,
-                        'AM_XGETTEXT_OPTION' => 1,
-                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_PROG_CC_C_O' => 1,
+                        'sinclude' => 1,
                         'AM_CONDITIONAL' => 1,
+                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_XGETTEXT_OPTION' => 1,
                         'AC_CONFIG_HEADERS' => 1,
                         'AC_DEFINE_TRACE_LITERAL' => 1,
                         'AM_POT_TOOLS' => 1,
@@ -84,55 +84,55 @@
                         'configure.in'
                       ],
                       {
-                        'AM_PROG_F77_C_O' => 1,
                         '_LT_AC_TAGCONFIG' => 1,
-                        'm4_pattern_forbid' => 1,
+                        'AM_PROG_F77_C_O' => 1,
                         'AC_INIT' => 1,
-                        'AC_CANONICAL_TARGET' => 1,
+                        'm4_pattern_forbid' => 1,
                         '_AM_COND_IF' => 1,
-                        'AC_CONFIG_LIBOBJ_DIR' => 1,
+                        'AC_CANONICAL_TARGET' => 1,
                         'AC_SUBST' => 1,
-                        'AC_CANONICAL_HOST' => 1,
+                        'AC_CONFIG_LIBOBJ_DIR' => 1,
                         'AC_FC_SRCEXT' => 1,
+                        'AC_CANONICAL_HOST' => 1,
                         'AC_PROG_LIBTOOL' => 1,
                         'AM_INIT_AUTOMAKE' => 1,
-                        'AC_CONFIG_SUBDIRS' => 1,
                         'AM_PATH_GUILE' => 1,
+                        'AC_CONFIG_SUBDIRS' => 1,
                         'AM_AUTOMAKE_VERSION' => 1,
                         'LT_CONFIG_LTDL_DIR' => 1,
-                        'AC_CONFIG_LINKS' => 1,
                         'AC_REQUIRE_AUX_FILE' => 1,
-                        'LT_SUPPORTED_TAG' => 1,
+                        'AC_CONFIG_LINKS' => 1,
                         'm4_sinclude' => 1,
+                        'LT_SUPPORTED_TAG' => 1,
                         'AM_MAINTAINER_MODE' => 1,
                         'AM_NLS' => 1,
                         'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
-                        '_m4_warn' => 1,
                         'AM_MAKEFILE_INCLUDE' => 1,
+                        '_m4_warn' => 1,
                         'AM_PROG_CXX_C_O' => 1,
-                        '_AM_MAKEFILE_INCLUDE' => 1,
                         '_AM_COND_ENDIF' => 1,
+                        '_AM_MAKEFILE_INCLUDE' => 1,
                         'AM_ENABLE_MULTILIB' => 1,
                         'AM_SILENT_RULES' => 1,
                         'AM_PROG_MOC' => 1,
                         'AC_CONFIG_FILES' => 1,
-                        'LT_INIT' => 1,
                         'include' => 1,
-                        'AM_GNU_GETTEXT' => 1,
+                        'LT_INIT' => 1,
                         'AM_PROG_AR' => 1,
+                        'AM_GNU_GETTEXT' => 1,
                         'AC_LIBSOURCE' => 1,
-                        'AC_CANONICAL_BUILD' => 1,
                         'AM_PROG_FC_C_O' => 1,
+                        'AC_CANONICAL_BUILD' => 1,
                         'AC_FC_FREEFORM' => 1,
                         'AH_OUTPUT' => 1,
-                        'AC_CONFIG_AUX_DIR' => 1,
                         '_AM_SUBST_NOTMAKE' => 1,
-                        'm4_pattern_allow' => 1,
-                        'AM_PROG_CC_C_O' => 1,
+                        'AC_CONFIG_AUX_DIR' => 1,
                         'sinclude' => 1,
-                        'AM_CONDITIONAL' => 1,
-                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_PROG_CC_C_O' => 1,
+                        'm4_pattern_allow' => 1,
                         'AM_XGETTEXT_OPTION' => 1,
+                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_CONDITIONAL' => 1,
                         'AC_CONFIG_HEADERS' => 1,
                         'AC_DEFINE_TRACE_LITERAL' => 1,
                         'AM_POT_TOOLS' => 1,
@@ -155,19 +155,19 @@
                       {
                         'm4_pattern_forbid' => 1,
                         'AC_CONFIG_LIBOBJ_DIR' => 1,
-                        'AC_C_VOLATILE' => 1,
                         'AC_TYPE_OFF_T' => 1,
+                        'AC_C_VOLATILE' => 1,
                         'AC_FUNC_CLOSEDIR_VOID' => 1,
                         'AC_REPLACE_FNMATCH' => 1,
                         'AC_PROG_LIBTOOL' => 1,
                         'AC_FUNC_STAT' => 1,
-                        'AC_FUNC_WAIT3' => 1,
                         'AC_HEADER_TIME' => 1,
-                        'AC_FUNC_LSTAT' => 1,
-                        'AC_STRUCT_TM' => 1,
+                        'AC_FUNC_WAIT3' => 1,
                         'AM_AUTOMAKE_VERSION' => 1,
-                        'AC_FUNC_GETMNTENT' => 1,
+                        'AC_STRUCT_TM' => 1,
+                        'AC_FUNC_LSTAT' => 1,
                         'AC_TYPE_MODE_T' => 1,
+                        'AC_FUNC_GETMNTENT' => 1,
                         'AC_FUNC_STRTOD' => 1,
                         'AC_CHECK_HEADERS' => 1,
                         'AC_FUNC_STRNLEN' => 1,
@@ -186,17 +186,17 @@
                         'AC_STRUCT_ST_BLOCKS' => 1,
                         'AC_TYPE_SIGNAL' => 1,
                         'AC_TYPE_UID_T' => 1,
-                        'AC_PROG_MAKE_SET' => 1,
                         'AC_CONFIG_AUX_DIR' => 1,
-                        'm4_pattern_allow' => 1,
+                        'AC_PROG_MAKE_SET' => 1,
                         'sinclude' => 1,
+                        'm4_pattern_allow' => 1,
                         'AC_DEFINE_TRACE_LITERAL' => 1,
                         'AC_FUNC_STRERROR_R' => 1,
                         'AC_PROG_CC' => 1,
-                        'AC_DECL_SYS_SIGLIST' => 1,
                         'AC_FUNC_FORK' => 1,
-                        'AC_FUNC_STRCOLL' => 1,
+                        'AC_DECL_SYS_SIGLIST' => 1,
                         'AC_FUNC_VPRINTF' => 1,
+                        'AC_FUNC_STRCOLL' => 1,
                         'AC_PROG_YACC' => 1,
                         'AC_INIT' => 1,
                         'AC_STRUCT_TIMEZONE' => 1,
@@ -218,33 +218,33 @@
                         'AM_MAINTAINER_MODE' => 1,
                         'AC_FUNC_UTIME_NULL' => 1,
                         'AC_FUNC_SELECT_ARGTYPES' => 1,
-                        'AC_HEADER_STAT' => 1,
                         'AC_FUNC_STRFTIME' => 1,
-                        'AC_PROG_CPP' => 1,
+                        'AC_HEADER_STAT' => 1,
                         'AC_C_INLINE' => 1,
-                        'AC_PROG_LEX' => 1,
-                        'AC_C_CONST' => 1,
+                        'AC_PROG_CPP' => 1,
                         'AC_TYPE_PID_T' => 1,
+                        'AC_C_CONST' => 1,
+                        'AC_PROG_LEX' => 1,
                         'AC_CONFIG_FILES' => 1,
                         'include' => 1,
                         'AC_FUNC_SETVBUF_REVERSED' => 1,
                         'AC_PROG_INSTALL' => 1,
                         'AM_GNU_GETTEXT' => 1,
-                        'AC_CHECK_LIB' => 1,
                         'AC_FUNC_OBSTACK' => 1,
+                        'AC_CHECK_LIB' => 1,
                         'AC_FUNC_MALLOC' => 1,
                         'AC_FUNC_GETGROUPS' => 1,
                         'AC_FUNC_GETLOADAVG' => 1,
                         'AH_OUTPUT' => 1,
                         'AC_FUNC_FSEEKO' => 1,
                         'AM_PROG_CC_C_O' => 1,
-                        'AC_FUNC_MKTIME' => 1,
-                        'AC_CANONICAL_SYSTEM' => 1,
                         'AM_CONDITIONAL' => 1,
+                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AC_FUNC_MKTIME' => 1,
                         'AC_CONFIG_HEADERS' => 1,
                         'AC_HEADER_SYS_WAIT' => 1,
-                        'AC_PROG_LN_S' => 1,
                         'AC_FUNC_MEMCMP' => 1,
+                        'AC_PROG_LN_S' => 1,
                         'm4_include' => 1,
                         'AC_HEADER_DIRENT' => 1,
                         'AC_CHECK_FUNCS' => 1
@@ -262,57 +262,55 @@
                         'configure.ac'
                       ],
                       {
-                        'AM_PROG_F77_C_O' => 1,
                         '_LT_AC_TAGCONFIG' => 1,
-                        'm4_pattern_forbid' => 1,
+                        'AM_PROG_F77_C_O' => 1,
                         'AC_INIT' => 1,
-                        'AC_CANONICAL_TARGET' => 1,
+                        'm4_pattern_forbid' => 1,
                         '_AM_COND_IF' => 1,
-                        'AC_CONFIG_LIBOBJ_DIR' => 1,
+                        'AC_CANONICAL_TARGET' => 1,
                         'AC_SUBST' => 1,
-                        'AC_CANONICAL_HOST' => 1,
+                        'AC_CONFIG_LIBOBJ_DIR' => 1,
                         'AC_FC_SRCEXT' => 1,
+                        'AC_CANONICAL_HOST' => 1,
                         'AC_PROG_LIBTOOL' => 1,
                         'AM_INIT_AUTOMAKE' => 1,
-                        'AC_CONFIG_SUBDIRS' => 1,
                         'AM_PATH_GUILE' => 1,
+                        'AC_CONFIG_SUBDIRS' => 1,
                         'AM_AUTOMAKE_VERSION' => 1,
                         'LT_CONFIG_LTDL_DIR' => 1,
-                        'AC_CONFIG_LINKS' => 1,
                         'AC_REQUIRE_AUX_FILE' => 1,
-                        'LT_SUPPORTED_TAG' => 1,
+                        'AC_CONFIG_LINKS' => 1,
                         'm4_sinclude' => 1,
+                        'LT_SUPPORTED_TAG' => 1,
                         'AM_MAINTAINER_MODE' => 1,
                         'AM_NLS' => 1,
-                        'AC_FC_PP_DEFINE' => 1,
                         'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
-                        '_m4_warn' => 1,
                         'AM_MAKEFILE_INCLUDE' => 1,
+                        '_m4_warn' => 1,
                         'AM_PROG_CXX_C_O' => 1,
-                        '_AM_MAKEFILE_INCLUDE' => 1,
                         '_AM_COND_ENDIF' => 1,
+                        '_AM_MAKEFILE_INCLUDE' => 1,
                         'AM_ENABLE_MULTILIB' => 1,
                         'AM_SILENT_RULES' => 1,
                         'AM_PROG_MOC' => 1,
                         'AC_CONFIG_FILES' => 1,
-                        'LT_INIT' => 1,
                         'include' => 1,
-                        'AM_GNU_GETTEXT' => 1,
+                        'LT_INIT' => 1,
                         'AM_PROG_AR' => 1,
+                        'AM_GNU_GETTEXT' => 1,
                         'AC_LIBSOURCE' => 1,
-                        'AC_CANONICAL_BUILD' => 1,
                         'AM_PROG_FC_C_O' => 1,
+                        'AC_CANONICAL_BUILD' => 1,
                         'AC_FC_FREEFORM' => 1,
                         'AH_OUTPUT' => 1,
-                        'AC_FC_PP_SRCEXT' => 1,
-                        'AC_CONFIG_AUX_DIR' => 1,
                         '_AM_SUBST_NOTMAKE' => 1,
-                        'm4_pattern_allow' => 1,
-                        'AM_PROG_CC_C_O' => 1,
+                        'AC_CONFIG_AUX_DIR' => 1,
                         'sinclude' => 1,
-                        'AM_CONDITIONAL' => 1,
-                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_PROG_CC_C_O' => 1,
+                        'm4_pattern_allow' => 1,
                         'AM_XGETTEXT_OPTION' => 1,
+                        'AC_CANONICAL_SYSTEM' => 1,
+                        'AM_CONDITIONAL' => 1,
                         'AC_CONFIG_HEADERS' => 1,
                         'AC_DEFINE_TRACE_LITERAL' => 1,
                         'AM_POT_TOOLS' => 1,

diff --git a/autom4te.cache/traces.3 b/autom4te.cache/traces.3
index ffe6bbd1e40aacb31d09c20992f9860943ac4748..f1b0857d4748942a9af4c0655e5e33adbf26ca22 100644 (file)
--- a/autom4te.cache/traces.3
+++ b/autom4te.cache/traces.3
@@ -181,25 +181,25 @@ m4trace:configure.ac:106: -1- AC_SUBST([DEBUGGER_START_FILE])
 m4trace:configure.ac:106: -1- AC_SUBST_TRACE([DEBUGGER_START_FILE])
 m4trace:configure.ac:106: -1- m4_pattern_allow([^DEBUGGER_START_FILE$])
 m4trace:configure.ac:110: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:110: the top level])
 m4trace:configure.ac:111: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:111: the top level])
 m4trace:configure.ac:112: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:112: the top level])
 m4trace:configure.ac:113: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:113: the top level])
 m4trace:configure.ac:114: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:114: the top level])
 m4trace:configure.ac:115: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:115: the top level])
 m4trace:configure.ac:116: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:116: the top level])
 m4trace:configure.ac:127: -1- AC_DEFINE_TRACE_LITERAL([USING_BASH_MALLOC])
 m4trace:configure.ac:127: -1- m4_pattern_allow([^USING_BASH_MALLOC$])
@@ -208,118 +208,118 @@ m4trace:configure.ac:137: -1- m4_pattern_allow([^DISABLE_MALLOC_WRAPPERS$])
 m4trace:configure.ac:147: -1- AC_DEFINE_TRACE_LITERAL([AFS])
 m4trace:configure.ac:147: -1- m4_pattern_allow([^AFS$])
 m4trace:configure.ac:200: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:200: the top level])
 m4trace:configure.ac:216: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:216: the top level])
 m4trace:configure.ac:217: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:217: the top level])
 m4trace:configure.ac:218: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:218: the top level])
 m4trace:configure.ac:219: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:219: the top level])
 m4trace:configure.ac:220: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:220: the top level])
 m4trace:configure.ac:221: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:221: the top level])
 m4trace:configure.ac:222: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:222: the top level])
 m4trace:configure.ac:223: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:223: the top level])
 m4trace:configure.ac:224: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:224: the top level])
 m4trace:configure.ac:225: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:225: the top level])
 m4trace:configure.ac:226: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:226: the top level])
 m4trace:configure.ac:227: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:227: the top level])
 m4trace:configure.ac:228: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:228: the top level])
 m4trace:configure.ac:229: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:229: the top level])
 m4trace:configure.ac:230: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:230: the top level])
 m4trace:configure.ac:231: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:231: the top level])
 m4trace:configure.ac:232: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:232: the top level])
 m4trace:configure.ac:233: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:233: the top level])
 m4trace:configure.ac:234: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:234: the top level])
 m4trace:configure.ac:235: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:235: the top level])
 m4trace:configure.ac:236: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:236: the top level])
 m4trace:configure.ac:237: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:237: the top level])
 m4trace:configure.ac:238: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:238: the top level])
 m4trace:configure.ac:239: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:239: the top level])
 m4trace:configure.ac:240: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:240: the top level])
 m4trace:configure.ac:241: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:241: the top level])
 m4trace:configure.ac:242: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:242: the top level])
 m4trace:configure.ac:243: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:243: the top level])
 m4trace:configure.ac:244: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:244: the top level])
 m4trace:configure.ac:245: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:245: the top level])
 m4trace:configure.ac:246: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:246: the top level])
 m4trace:configure.ac:247: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:247: the top level])
 m4trace:configure.ac:248: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:248: the top level])
 m4trace:configure.ac:249: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:249: the top level])
 m4trace:configure.ac:252: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:252: the top level])
 m4trace:configure.ac:253: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:253: the top level])
 m4trace:configure.ac:254: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
 configure.ac:254: the top level])
 m4trace:configure.ac:257: -1- AC_SUBST([CC_FOR_BUILD])
 m4trace:configure.ac:257: -1- AC_SUBST_TRACE([CC_FOR_BUILD])
@@ -470,7 +470,7 @@ m4trace:configure.ac:404: -1- AC_SUBST([OBJEXT], [$ac_cv_objext])
 m4trace:configure.ac:404: -1- AC_SUBST_TRACE([OBJEXT])
 m4trace:configure.ac:404: -1- m4_pattern_allow([^OBJEXT$])
 m4trace:configure.ac:408: -1- _m4_warn([obsolete], [The macro `AC_MINIX' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/specific.m4:441: AC_MINIX is expanded from...
+You should run autoupdate.], [../../lib/autoconf/specific.m4:437: AC_MINIX is expanded from...
 configure.ac:408: the top level])
 m4trace:configure.ac:408: -1- AC_SUBST([CPP])
 m4trace:configure.ac:408: -1- AC_SUBST_TRACE([CPP])
@@ -561,10 +561,6 @@ m4trace:configure.ac:410: -1- AC_DEFINE_TRACE_LITERAL([_LARGE_FILES])
 m4trace:configure.ac:410: -1- m4_pattern_allow([^_LARGE_FILES$])
 m4trace:configure.ac:410: -1- AH_OUTPUT([_LARGE_FILES], [/* Define for large files, on AIX-style hosts. */
 @%:@undef _LARGE_FILES])
-m4trace:configure.ac:410: -1- AH_OUTPUT([_DARWIN_USE_64_BIT_INODE], [/* Enable large inode numbers on Mac OS X 10.5.  */
-#ifndef _DARWIN_USE_64_BIT_INODE
-# define _DARWIN_USE_64_BIT_INODE 1
-#endif])
 m4trace:configure.ac:447: -1- AC_SUBST([CROSS_COMPILE])
 m4trace:configure.ac:447: -1- AC_SUBST_TRACE([CROSS_COMPILE])
 m4trace:configure.ac:447: -1- m4_pattern_allow([^CROSS_COMPILE$])
@@ -605,9 +601,9 @@ m4trace:configure.ac:520: -1- AC_SUBST([LIBS_FOR_BUILD])
 m4trace:configure.ac:520: -1- AC_SUBST_TRACE([LIBS_FOR_BUILD])
 m4trace:configure.ac:520: -1- m4_pattern_allow([^LIBS_FOR_BUILD$])
 m4trace:configure.ac:534: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1806: RL_LIB_READLINE_VERSION is expanded from...
 configure.ac:534: the top level])
 m4trace:configure.ac:534: -1- AC_DEFINE_TRACE_LITERAL([RL_READLINE_VERSION])
@@ -733,7 +729,7 @@ m4trace:configure.ac:675: -1- m4_pattern_allow([^HAVE_STRINGIZE$])
 m4trace:configure.ac:675: -1- AH_OUTPUT([HAVE_STRINGIZE], [/* Define to 1 if cpp supports the ANSI @%:@ stringizing operator. */
 @%:@undef HAVE_STRINGIZE])
 m4trace:configure.ac:676: -1- _m4_warn([obsolete], [The macro `AC_C_LONG_DOUBLE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/types.m4:452: AC_C_LONG_DOUBLE is expanded from...
+You should run autoupdate.], [../../lib/autoconf/types.m4:451: AC_C_LONG_DOUBLE is expanded from...
 configure.ac:676: the top level])
 m4trace:configure.ac:676: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LONG_DOUBLE_WIDER])
 m4trace:configure.ac:676: -1- m4_pattern_allow([^HAVE_LONG_DOUBLE_WIDER$])
@@ -802,7 +798,7 @@ m4trace:configure.ac:683: -1- AC_SUBST([MSGMERGE])
 m4trace:configure.ac:683: -1- AC_SUBST_TRACE([MSGMERGE])
 m4trace:configure.ac:683: -1- m4_pattern_allow([^MSGMERGE$])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_OUTPUT_COMMANDS' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/status.m4:1026: AC_OUTPUT_COMMANDS is expanded from...
+You should run autoupdate.], [../../lib/autoconf/status.m4:1028: AC_OUTPUT_COMMANDS is expanded from...
 aclocal.m4:3707: AM_PO_SUBDIRS is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
 configure.ac:683: the top level])
@@ -864,10 +860,10 @@ m4trace:configure.ac:683: -1- AC_SUBST([GLIBC21])
 m4trace:configure.ac:683: -1- AC_SUBST_TRACE([GLIBC21])
 m4trace:configure.ac:683: -1- m4_pattern_allow([^GLIBC21$])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2613: gt_INTDIV0 is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -877,10 +873,10 @@ m4trace:configure.ac:683: -1- m4_pattern_allow([^INTDIV0_RAISES_SIGFPE$])
 m4trace:configure.ac:683: -1- AH_OUTPUT([INTDIV0_RAISES_SIGFPE], [/* Define if integer division by zero raises signal SIGFPE. */
 @%:@undef INTDIV0_RAISES_SIGFPE])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2715: jm_AC_HEADER_INTTYPES_H is expanded from...
 aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
@@ -892,10 +888,10 @@ m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_INTTYPES_H_WITH_UINTMAX], [/* Defi
    declares uintmax_t. */
 @%:@undef HAVE_INTTYPES_H_WITH_UINTMAX])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:3986: jm_AC_HEADER_STDINT_H is expanded from...
 aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
@@ -907,10 +903,10 @@ m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_STDINT_H_WITH_UINTMAX], [/* Define
    uintmax_t. */
 @%:@undef HAVE_STDINT_H_WITH_UINTMAX])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:4043: jm_AC_TYPE_UNSIGNED_LONG_LONG is expanded from...
 aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
@@ -930,10 +926,10 @@ m4trace:configure.ac:683: -1- m4_pattern_allow([^HAVE_UINTMAX_T$])
 m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_UINTMAX_T], [/* Define if you have the \'uintmax_t\' type in <stdint.h> or <inttypes.h>. */
 @%:@undef HAVE_UINTMAX_T])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2688: gt_HEADER_INTTYPES_H is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -943,10 +939,10 @@ m4trace:configure.ac:683: -1- m4_pattern_allow([^HAVE_INTTYPES_H$])
 m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_INTTYPES_H], [/* Define if <inttypes.h> exists and doesn\'t clash with <sys/types.h>. */
 @%:@undef HAVE_INTTYPES_H])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2743: gt_INTTYPES_PRI is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -1022,20 +1018,20 @@ m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE___ARGZ_NEXT], [/* Define to 1 if y
 m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE___FSETLOCKING], [/* Define to 1 if you have the `__fsetlocking\' function. */
 @%:@undef HAVE___FSETLOCKING])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2521: AM_ICONV_LINK is expanded from...
 aclocal.m4:2576: AM_ICONV is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
 configure.ac:683: the top level])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2521: AM_ICONV_LINK is expanded from...
 aclocal.m4:2576: AM_ICONV is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
@@ -1052,9 +1048,9 @@ m4trace:configure.ac:683: -1- AC_SUBST([LTLIBICONV])
 m4trace:configure.ac:683: -1- AC_SUBST_TRACE([LTLIBICONV])
 m4trace:configure.ac:683: -1- m4_pattern_allow([^LTLIBICONV$])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:2576: AM_ICONV is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -1064,10 +1060,10 @@ m4trace:configure.ac:683: -1- m4_pattern_allow([^ICONV_CONST$])
 m4trace:configure.ac:683: -1- AH_OUTPUT([ICONV_CONST], [/* Define as const if the declaration of iconv() needs const. */
 @%:@undef ICONV_CONST])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2040: AM_LANGINFO_CODESET is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -1077,10 +1073,10 @@ m4trace:configure.ac:683: -1- m4_pattern_allow([^HAVE_LANGINFO_CODESET$])
 m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_LANGINFO_CODESET], [/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
 @%:@undef HAVE_LANGINFO_CODESET])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2810: AM_LC_MESSAGES is expanded from...
 aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
@@ -1097,24 +1093,24 @@ m4trace:configure.ac:683: -1- AC_SUBST([USE_NLS])
 m4trace:configure.ac:683: -1- AC_SUBST_TRACE([USE_NLS])
 m4trace:configure.ac:683: -1- m4_pattern_allow([^USE_NLS$])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
 configure.ac:683: the top level])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
 configure.ac:683: the top level])
 m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
 configure.ac:683: the top level])
 m4trace:configure.ac:683: -1- AC_DEFINE_TRACE_LITERAL([ENABLE_NLS])
@@ -1294,7 +1290,7 @@ m4trace:configure.ac:710: -1- AC_DEFINE_TRACE_LITERAL([GETPGRP_VOID])
 m4trace:configure.ac:710: -1- m4_pattern_allow([^GETPGRP_VOID$])
 m4trace:configure.ac:710: -1- AH_OUTPUT([GETPGRP_VOID], [/* Define to 1 if the `getpgrp\' function requires zero arguments. */
 @%:@undef GETPGRP_VOID])
-m4trace:configure.ac:711: -1- _m4_warn([obsolete], [The macro `AC_FUNC_SETVBUF_REVERSED' is obsolete.  Remove it and all references to SETVBUF_REVERSED.], [../../lib/autoconf/functions.m4:1710: AC_FUNC_SETVBUF_REVERSED is expanded from...
+m4trace:configure.ac:711: -1- _m4_warn([obsolete], [The macro `AC_FUNC_SETVBUF_REVERSED' is obsolete.  Remove it and all references to SETVBUF_REVERSED.], [../../lib/autoconf/functions.m4:1714: AC_FUNC_SETVBUF_REVERSED is expanded from...
 configure.ac:711: the top level])
 m4trace:configure.ac:712: -1- AH_OUTPUT([HAVE_VPRINTF], [/* Define to 1 if you have the `vprintf\' function. */
 @%:@undef HAVE_VPRINTF])
@@ -1316,7 +1312,7 @@ m4trace:configure.ac:739: -1- AC_SUBST_TRACE([LIB@&t@OBJS])
 m4trace:configure.ac:739: -1- m4_pattern_allow([^LIB@&t@OBJS$])
 m4trace:configure.ac:739: -1- AC_LIBSOURCE([vprint.c])
 m4trace:configure.ac:743: -1- _m4_warn([obsolete], [The macro `AC_TYPE_SIGNAL' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/types.m4:746: AC_TYPE_SIGNAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/types.m4:738: AC_TYPE_SIGNAL is expanded from...
 configure.ac:743: the top level])
 m4trace:configure.ac:743: -1- AC_DEFINE_TRACE_LITERAL([RETSIGTYPE])
 m4trace:configure.ac:743: -1- m4_pattern_allow([^RETSIGTYPE$])
@@ -1651,54 +1647,54 @@ m4trace:configure.ac:785: -1- AH_OUTPUT([HAVE_DECL_STRTOLD], [/* Define to 1 if
    don\'t. */
 @%:@undef HAVE_DECL_STRTOLD])
 m4trace:configure.ac:785: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2880: AC_CHECK_DECLS is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2881: AC_CHECK_DECLS is expanded from...
 configure.ac:785: the top level])
 m4trace:configure.ac:785: -1- AC_DEFINE_TRACE_LITERAL([STRTOLD_BROKEN])
 m4trace:configure.ac:785: -1- m4_pattern_allow([^STRTOLD_BROKEN$])
 m4trace:configure.ac:801: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:801: the top level])
 m4trace:configure.ac:802: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:802: the top level])
 m4trace:configure.ac:803: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:803: the top level])
 m4trace:configure.ac:804: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:804: the top level])
 m4trace:configure.ac:805: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:805: the top level])
 m4trace:configure.ac:806: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:103: BASH_CHECK_DECL is expanded from...
 configure.ac:806: the top level])
 m4trace:configure.ac:808: -1- AH_OUTPUT([HAVE_SYS_TIME_H], [/* Define to 1 if you have the <sys/time.h> header file. */
@@ -1827,19 +1823,19 @@ m4trace:configure.ac:836: -1- AH_OUTPUT([HAVE_TOWUPPER], [/* Define to 1 if you
 m4trace:configure.ac:836: -1- AH_OUTPUT([HAVE_ISWCTYPE], [/* Define to 1 if you have the `iswctype\' function. */
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-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
 m4trace:configure.ac:836: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LANGINFO_CODESET])
 m4trace:configure.ac:836: -1- m4_pattern_allow([^HAVE_LANGINFO_CODESET$])
 m4trace:configure.ac:836: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
 m4trace:configure.ac:836: -1- AC_DEFINE_TRACE_LITERAL([HAVE_WCHAR_T])
@@ -1847,10 +1843,10 @@ m4trace:configure.ac:836: -1- m4_pattern_allow([^HAVE_WCHAR_T$])
 m4trace:configure.ac:836: -1- AH_OUTPUT([HAVE_WCHAR_T], [/* systems should define this type here */
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
 m4trace:configure.ac:836: -1- AC_DEFINE_TRACE_LITERAL([HAVE_WCTYPE_T])
@@ -1858,10 +1854,10 @@ m4trace:configure.ac:836: -1- m4_pattern_allow([^HAVE_WCTYPE_T$])
 m4trace:configure.ac:836: -1- AH_OUTPUT([HAVE_WCTYPE_T], [/* systems should define this type here */
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 m4trace:configure.ac:836: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
 m4trace:configure.ac:836: -1- AC_DEFINE_TRACE_LITERAL([HAVE_WINT_T])
@@ -1869,17 +1865,17 @@ m4trace:configure.ac:836: -1- m4_pattern_allow([^HAVE_WINT_T$])
 m4trace:configure.ac:836: -1- AH_OUTPUT([HAVE_WINT_T], [/* systems should define this type here */
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
-m4trace:configure.ac:836: -1- _m4_warn([cross], [AC_RUN_IFELSE called without default to allow cross compiling], [../../lib/autoconf/general.m4:2748: AC_RUN_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+m4trace:configure.ac:836: -1- _m4_warn([cross], [AC_RUN_IFELSE called without default to allow cross compiling], [../../lib/autoconf/general.m4:2749: AC_RUN_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:1689: BASH_CHECK_MULTIBYTE is expanded from...
 configure.ac:836: the top level])
 m4trace:configure.ac:836: -1- AC_DEFINE_TRACE_LITERAL([WCWIDTH_BROKEN])
@@ -1901,7 +1897,7 @@ m4trace:configure.ac:841: -1- AH_OUTPUT([HAVE_DLCLOSE], [/* Define to 1 if you h
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-You should run autoupdate.], [../../lib/autoconf/specific.m4:39: AC_DECL_SYS_SIGLIST is expanded from...
+You should run autoupdate.], [../../lib/autoconf/specific.m4:41: AC_DECL_SYS_SIGLIST is expanded from...
 configure.ac:845: the top level])
 m4trace:configure.ac:845: -1- AC_DEFINE_TRACE_LITERAL([HAVE_DECL_SYS_SIGLIST])
 m4trace:configure.ac:845: -1- m4_pattern_allow([^HAVE_DECL_SYS_SIGLIST$])
@@ -1909,10 +1905,10 @@ m4trace:configure.ac:845: -1- AH_OUTPUT([HAVE_DECL_SYS_SIGLIST], [/* Define to 1
    don\'t. */
 @%:@undef HAVE_DECL_SYS_SIGLIST])
 m4trace:configure.ac:849: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:563: BASH_FUNC_INET_ATON is expanded from...
 configure.ac:849: the top level])
 m4trace:configure.ac:849: -1- AC_DEFINE_TRACE_LITERAL([HAVE_INET_ATON])
@@ -1930,9 +1926,9 @@ m4trace:configure.ac:860: -1- m4_pattern_allow([^HAVE_LIBSOCKET$])
 m4trace:configure.ac:860: -1- AC_DEFINE_TRACE_LITERAL([HAVE_GETPEERNAME])
 m4trace:configure.ac:860: -1- m4_pattern_allow([^HAVE_GETPEERNAME$])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:732: BASH_FUNC_GETHOSTBYNAME is expanded from...
 configure.ac:864: the top level])
 m4trace:configure.ac:864: -1- AC_DEFINE_TRACE_LITERAL([HAVE_GETHOSTBYNAME])
@@ -1983,35 +1979,35 @@ m4trace:configure.ac:875: -1- m4_pattern_allow([^time_t$])
 m4trace:configure.ac:875: -1- AH_OUTPUT([time_t], [/* Define to `long\' if <sys/types.h> does not define. */
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:472: BASH_TYPE_LONG_LONG is expanded from...
 configure.ac:877: the top level])
 m4trace:configure.ac:877: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LONG_LONG])
 m4trace:configure.ac:877: -1- m4_pattern_allow([^HAVE_LONG_LONG$])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:486: BASH_TYPE_UNSIGNED_LONG_LONG is expanded from...
 configure.ac:878: the top level])
 m4trace:configure.ac:878: -1- AC_DEFINE_TRACE_LITERAL([HAVE_UNSIGNED_LONG_LONG])
 m4trace:configure.ac:878: -1- m4_pattern_allow([^HAVE_UNSIGNED_LONG_LONG$])
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-You should run autoupdate.], [../../lib/autoconf/types.m4:746: AC_TYPE_SIGNAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/types.m4:738: AC_TYPE_SIGNAL is expanded from...
 configure.ac:880: the top level])
 m4trace:configure.ac:880: -1- AC_DEFINE_TRACE_LITERAL([RETSIGTYPE])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:537: BASH_TYPE_SIG_ATOMIC_T is expanded from...
 configure.ac:881: the top level])
 m4trace:configure.ac:881: -1- AC_DEFINE_TRACE_LITERAL([sig_atomic_t])
@@ -2145,66 +2141,66 @@ m4trace:configure.ac:903: -1- AH_OUTPUT([STAT_MACROS_BROKEN], [/* Define to 1 if
 m4trace:configure.ac:908: -1- AC_DEFINE_TRACE_LITERAL([HAVE_HASH_BANG_EXEC])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:549: BASH_FUNC_LSTAT is expanded from...
 configure.ac:913: the top level])
 m4trace:configure.ac:913: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LSTAT])
 m4trace:configure.ac:913: -1- m4_pattern_allow([^HAVE_LSTAT$])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1920: BASH_FUNC_CTYPE_NONASCII is expanded from...
 configure.ac:917: the top level])
 m4trace:configure.ac:917: -1- AC_DEFINE_TRACE_LITERAL([CTYPE_NON_ASCII])
 m4trace:configure.ac:917: -1- m4_pattern_allow([^CTYPE_NON_ASCII$])
 m4trace:configure.ac:918: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:270: BASH_FUNC_DUP2_CLOEXEC_CHECK is expanded from...
 configure.ac:918: the top level])
 m4trace:configure.ac:918: -1- AC_DEFINE_TRACE_LITERAL([DUP2_BROKEN])
 m4trace:configure.ac:918: -1- m4_pattern_allow([^DUP2_BROKEN$])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1235: BASH_SYS_PGRP_SYNC is expanded from...
 configure.ac:919: the top level])
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 m4trace:configure.ac:919: -1- m4_pattern_allow([^PGRP_PIPE$])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1195: BASH_SYS_SIGNAL_VINTAGE is expanded from...
 configure.ac:920: the top level])
 m4trace:configure.ac:920: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2661: _AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2678: AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2662: _AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2679: AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1195: BASH_SYS_SIGNAL_VINTAGE is expanded from...
 configure.ac:920: the top level])
 m4trace:configure.ac:920: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2661: _AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2678: AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2661: _AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2678: AC_LINK_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2662: _AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2679: AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2662: _AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2679: AC_LINK_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1195: BASH_SYS_SIGNAL_VINTAGE is expanded from...
 configure.ac:920: the top level])
 m4trace:configure.ac:920: -1- AC_DEFINE_TRACE_LITERAL([HAVE_POSIX_SIGNALS])
@@ -2214,42 +2210,42 @@ m4trace:configure.ac:920: -1- m4_pattern_allow([^HAVE_BSD_SIGNALS$])
 m4trace:configure.ac:920: -1- AC_DEFINE_TRACE_LITERAL([HAVE_USG_SIGHOLD])
 m4trace:configure.ac:920: -1- m4_pattern_allow([^HAVE_USG_SIGHOLD$])
 m4trace:configure.ac:923: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:253: BASH_SYS_ERRLIST is expanded from...
 configure.ac:923: the top level])
 m4trace:configure.ac:923: -1- AC_DEFINE_TRACE_LITERAL([HAVE_SYS_ERRLIST])
 m4trace:configure.ac:923: -1- m4_pattern_allow([^HAVE_SYS_ERRLIST$])
 m4trace:configure.ac:924: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:211: BASH_SYS_SIGLIST is expanded from...
 configure.ac:924: the top level])
 m4trace:configure.ac:924: -1- AC_DEFINE_TRACE_LITERAL([HAVE_SYS_SIGLIST])
 m4trace:configure.ac:924: -1- m4_pattern_allow([^HAVE_SYS_SIGLIST$])
 m4trace:configure.ac:925: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:167: BASH_DECL_UNDER_SYS_SIGLIST is expanded from...
 aclocal.m4:184: BASH_UNDER_SYS_SIGLIST is expanded from...
 configure.ac:925: the top level])
 m4trace:configure.ac:925: -1- AC_DEFINE_TRACE_LITERAL([UNDER_SYS_SIGLIST_DECLARED])
 m4trace:configure.ac:925: -1- m4_pattern_allow([^UNDER_SYS_SIGLIST_DECLARED$])
 m4trace:configure.ac:925: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:184: BASH_UNDER_SYS_SIGLIST is expanded from...
 configure.ac:925: the top level])
 m4trace:configure.ac:925: -1- AC_DEFINE_TRACE_LITERAL([HAVE_UNDER_SYS_SIGLIST])
 m4trace:configure.ac:925: -1- m4_pattern_allow([^HAVE_UNDER_SYS_SIGLIST$])
 m4trace:configure.ac:928: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:366: BASH_TYPE_SIGHANDLER is expanded from...
 configure.ac:928: the top level])
 m4trace:configure.ac:928: -1- AC_DEFINE_TRACE_LITERAL([VOID_SIGHANDLER])
@@ -2273,19 +2269,19 @@ m4trace:configure.ac:936: -1- m4_pattern_allow([^HAVE_SOCKLEN_T$])
 m4trace:configure.ac:936: -1- AC_DEFINE_TRACE_LITERAL([socklen_t])
 m4trace:configure.ac:936: -1- m4_pattern_allow([^socklen_t$])
 m4trace:configure.ac:938: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:507: BASH_TYPE_RLIMIT is expanded from...
 configure.ac:938: the top level])
 m4trace:configure.ac:938: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2590: _AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2606: AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2591: _AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2607: AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:507: BASH_TYPE_RLIMIT is expanded from...
 configure.ac:938: the top level])
 m4trace:configure.ac:938: -1- AC_DEFINE_TRACE_LITERAL([RLIMTYPE])
@@ -2301,43 +2297,43 @@ m4trace:configure.ac:943: -2- m4_pattern_allow([^TERMIOS_LDISC$])
 m4trace:configure.ac:944: -2- AC_DEFINE_TRACE_LITERAL([TERMIO_LDISC])
 m4trace:configure.ac:944: -2- m4_pattern_allow([^TERMIO_LDISC$])
 m4trace:configure.ac:945: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1042: BASH_STRUCT_DIRENT_D_INO is expanded from...
 configure.ac:945: the top level])
 m4trace:configure.ac:945: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STRUCT_DIRENT_D_INO])
 m4trace:configure.ac:945: -1- m4_pattern_allow([^HAVE_STRUCT_DIRENT_D_INO$])
 m4trace:configure.ac:946: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1075: BASH_STRUCT_DIRENT_D_FILENO is expanded from...
 configure.ac:946: the top level])
 m4trace:configure.ac:946: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STRUCT_DIRENT_D_FILENO])
 m4trace:configure.ac:946: -1- m4_pattern_allow([^HAVE_STRUCT_DIRENT_D_FILENO$])
 m4trace:configure.ac:947: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1108: BASH_STRUCT_DIRENT_D_NAMLEN is expanded from...
 configure.ac:947: the top level])
 m4trace:configure.ac:947: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STRUCT_DIRENT_D_NAMLEN])
 m4trace:configure.ac:947: -1- m4_pattern_allow([^HAVE_STRUCT_DIRENT_D_NAMLEN$])
 m4trace:configure.ac:948: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1173: BASH_STRUCT_WINSIZE is expanded from...
 configure.ac:948: the top level])
 m4trace:configure.ac:948: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2590: _AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2606: AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2591: _AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2607: AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1173: BASH_STRUCT_WINSIZE is expanded from...
 configure.ac:948: the top level])
 m4trace:configure.ac:948: -1- AC_DEFINE_TRACE_LITERAL([STRUCT_WINSIZE_IN_SYS_IOCTL])
@@ -2376,9 +2372,9 @@ m4trace:configure.ac:952: -1- AH_OUTPUT([HAVE_TZNAME], [/* Define to 1 if you do
 m4trace:configure.ac:953: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STRUCT_TIMEZONE])
 m4trace:configure.ac:953: -1- m4_pattern_allow([^HAVE_STRUCT_TIMEZONE$])
 m4trace:configure.ac:955: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:4149: BASH_STRUCT_WEXITSTATUS_OFFSET is expanded from...
 configure.ac:955: the top level])
 m4trace:configure.ac:955: -1- AC_DEFINE_TRACE_LITERAL([WEXITSTATUS_OFFSET])
@@ -2432,25 +2428,25 @@ m4trace:configure.ac:958: -1- m4_pattern_allow([^HAVE_STRUCT_STAT_ST_ATIM_ST__TI
 m4trace:configure.ac:958: -1- AH_OUTPUT([HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC], [/* Define to 1 if `st_atim.st__tim.tv_nsec\' is a member of `struct stat\'. */
 @%:@undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC])
 m4trace:configure.ac:961: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:299: BASH_FUNC_STRSIGNAL is expanded from...
 configure.ac:961: the top level])
 m4trace:configure.ac:961: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STRSIGNAL])
 m4trace:configure.ac:961: -1- m4_pattern_allow([^HAVE_STRSIGNAL$])
 m4trace:configure.ac:962: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:313: BASH_FUNC_OPENDIR_CHECK is expanded from...
 configure.ac:962: the top level])
 m4trace:configure.ac:962: -1- AC_DEFINE_TRACE_LITERAL([OPENDIR_NOT_ROBUST])
 m4trace:configure.ac:962: -1- m4_pattern_allow([^OPENDIR_NOT_ROBUST$])
 m4trace:configure.ac:963: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:683: BASH_FUNC_ULIMIT_MAXFDS is expanded from...
 configure.ac:963: the top level])
 m4trace:configure.ac:963: -1- AC_DEFINE_TRACE_LITERAL([ULIMIT_MAXFDS])
@@ -2465,17 +2461,17 @@ m4trace:configure.ac:964: -1- AH_OUTPUT([HAVE_DECL_FPURGE], [/* Define to 1 if y
    */
 @%:@undef HAVE_DECL_FPURGE])
 m4trace:configure.ac:965: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:579: BASH_FUNC_GETENV is expanded from...
 configure.ac:965: the top level])
 m4trace:configure.ac:965: -1- AC_DEFINE_TRACE_LITERAL([CAN_REDEFINE_GETENV])
 m4trace:configure.ac:965: -1- m4_pattern_allow([^CAN_REDEFINE_GETENV$])
 m4trace:configure.ac:967: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:702: BASH_FUNC_GETCWD is expanded from...
 configure.ac:967: the top level])
 m4trace:configure.ac:967: -1- AC_DEFINE_TRACE_LITERAL([GETCWD_BROKEN])
@@ -2485,17 +2481,17 @@ m4trace:configure.ac:967: -1- AC_SUBST_TRACE([LIB@&t@OBJS])
 m4trace:configure.ac:967: -1- m4_pattern_allow([^LIB@&t@OBJS$])
 m4trace:configure.ac:967: -1- AC_LIBSOURCE([getcwd.c])
 m4trace:configure.ac:969: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:778: BASH_FUNC_POSIX_SETJMP is expanded from...
 configure.ac:969: the top level])
 m4trace:configure.ac:969: -1- AC_DEFINE_TRACE_LITERAL([HAVE_POSIX_SIGSETJMP])
 m4trace:configure.ac:969: -1- m4_pattern_allow([^HAVE_POSIX_SIGSETJMP$])
 m4trace:configure.ac:970: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:829: BASH_FUNC_STRCOLL is expanded from...
 configure.ac:970: the top level])
 m4trace:configure.ac:970: -1- AC_DEFINE_TRACE_LITERAL([STRCOLL_BROKEN])
@@ -2503,10 +2499,10 @@ m4trace:configure.ac:970: -1- m4_pattern_allow([^STRCOLL_BROKEN$])
 m4trace:configure.ac:971: -1- AH_OUTPUT([HAVE_SNPRINTF], [/* Define to 1 if you have the `snprintf\' function. */
 @%:@undef HAVE_SNPRINTF])
 m4trace:configure.ac:971: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:4065: BASH_FUNC_SNPRINTF is expanded from...
 configure.ac:971: the top level])
 m4trace:configure.ac:971: -1- AC_DEFINE_TRACE_LITERAL([HAVE_SNPRINTF])
@@ -2516,10 +2512,10 @@ m4trace:configure.ac:971: -1- AH_OUTPUT([HAVE_SNPRINTF], [/* Define if you have
 m4trace:configure.ac:972: -1- AH_OUTPUT([HAVE_VSNPRINTF], [/* Define to 1 if you have the `vsnprintf\' function. */
 @%:@undef HAVE_VSNPRINTF])
 m4trace:configure.ac:972: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:4093: BASH_FUNC_VSNPRINTF is expanded from...
 configure.ac:972: the top level])
 m4trace:configure.ac:972: -1- AC_DEFINE_TRACE_LITERAL([HAVE_VSNPRINTF])
@@ -2527,10 +2523,10 @@ m4trace:configure.ac:972: -1- m4_pattern_allow([^HAVE_VSNPRINTF$])
 m4trace:configure.ac:972: -1- AH_OUTPUT([HAVE_VSNPRINTF], [/* Define if you have a standard-conformant vsnprintf function. */
 @%:@undef HAVE_VSNPRINTF])
 m4trace:configure.ac:978: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:624: BASH_FUNC_STD_PUTENV is expanded from...
 configure.ac:978: the top level])
 m4trace:configure.ac:978: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STD_PUTENV])
@@ -2538,10 +2534,10 @@ m4trace:configure.ac:978: -1- m4_pattern_allow([^HAVE_STD_PUTENV$])
 m4trace:configure.ac:980: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STD_PUTENV])
 m4trace:configure.ac:980: -1- m4_pattern_allow([^HAVE_STD_PUTENV$])
 m4trace:configure.ac:983: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2687: AC_TRY_LINK is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2688: AC_TRY_LINK is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
 aclocal.m4:654: BASH_FUNC_STD_UNSETENV is expanded from...
 configure.ac:983: the top level])
 m4trace:configure.ac:983: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STD_UNSETENV])
@@ -2549,33 +2545,33 @@ m4trace:configure.ac:983: -1- m4_pattern_allow([^HAVE_STD_UNSETENV$])
 m4trace:configure.ac:985: -1- AC_DEFINE_TRACE_LITERAL([HAVE_STD_UNSETENV])
 m4trace:configure.ac:985: -1- m4_pattern_allow([^HAVE_STD_UNSETENV$])
 m4trace:configure.ac:988: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:878: BASH_FUNC_PRINTF_A_FORMAT is expanded from...
 configure.ac:988: the top level])
 m4trace:configure.ac:988: -1- AC_DEFINE_TRACE_LITERAL([HAVE_PRINTF_A_FORMAT])
 m4trace:configure.ac:988: -1- m4_pattern_allow([^HAVE_PRINTF_A_FORMAT$])
 m4trace:configure.ac:991: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1297: BASH_SYS_REINSTALL_SIGHANDLERS is expanded from...
 configure.ac:991: the top level])
 m4trace:configure.ac:991: -1- AC_DEFINE_TRACE_LITERAL([MUST_REINSTALL_SIGHANDLERS])
 m4trace:configure.ac:991: -1- m4_pattern_allow([^MUST_REINSTALL_SIGHANDLERS$])
 m4trace:configure.ac:992: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1356: BASH_SYS_JOB_CONTROL_MISSING is expanded from...
 configure.ac:992: the top level])
 m4trace:configure.ac:992: -1- AC_DEFINE_TRACE_LITERAL([JOB_CONTROL_MISSING])
 m4trace:configure.ac:992: -1- m4_pattern_allow([^JOB_CONTROL_MISSING$])
 m4trace:configure.ac:993: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1415: BASH_SYS_NAMED_PIPES is expanded from...
 configure.ac:993: the top level])
 m4trace:configure.ac:993: -1- AC_DEFINE_TRACE_LITERAL([NAMED_PIPES_MISSING])
@@ -2585,33 +2581,33 @@ m4trace:configure.ac:996: -1- m4_pattern_allow([^GWINSZ_IN_SYS_IOCTL$])
 m4trace:configure.ac:996: -1- AH_OUTPUT([GWINSZ_IN_SYS_IOCTL], [/* Define to 1 if `TIOCGWINSZ\' requires <sys/ioctl.h>. */
 @%:@undef GWINSZ_IN_SYS_IOCTL])
 m4trace:configure.ac:997: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1496: BASH_HAVE_TIOCSTAT is expanded from...
 configure.ac:997: the top level])
 m4trace:configure.ac:997: -1- AC_DEFINE_TRACE_LITERAL([TIOCSTAT_IN_SYS_IOCTL])
 m4trace:configure.ac:997: -1- m4_pattern_allow([^TIOCSTAT_IN_SYS_IOCTL$])
 m4trace:configure.ac:998: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1508: BASH_HAVE_FIONREAD is expanded from...
 configure.ac:998: the top level])
 m4trace:configure.ac:998: -1- AC_DEFINE_TRACE_LITERAL([FIONREAD_IN_SYS_IOCTL])
 m4trace:configure.ac:998: -1- m4_pattern_allow([^FIONREAD_IN_SYS_IOCTL$])
 m4trace:configure.ac:1000: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1964: BASH_CHECK_WCONTINUED is expanded from...
 configure.ac:1000: the top level])
 m4trace:configure.ac:1000: -1- AC_DEFINE_TRACE_LITERAL([WCONTINUED_BROKEN])
 m4trace:configure.ac:1000: -1- m4_pattern_allow([^WCONTINUED_BROKEN$])
 m4trace:configure.ac:1003: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1526: BASH_CHECK_SPEED_T is expanded from...
 configure.ac:1003: the top level])
 m4trace:configure.ac:1003: -1- AC_DEFINE_TRACE_LITERAL([SPEED_T_IN_SYS_TYPES])
@@ -2619,9 +2615,9 @@ m4trace:configure.ac:1003: -1- m4_pattern_allow([^SPEED_T_IN_SYS_TYPES$])
 m4trace:configure.ac:1004: -1- AC_DEFINE_TRACE_LITERAL([HAVE_GETPW_DECLS])
 m4trace:configure.ac:1004: -1- m4_pattern_allow([^HAVE_GETPW_DECLS$])
 m4trace:configure.ac:1005: -1- _m4_warn([obsolete], [The macro `AC_TRY_RUN' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2764: AC_TRY_RUN is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2765: AC_TRY_RUN is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1653: BASH_CHECK_RTSIGS is expanded from...
 configure.ac:1005: the top level])
 m4trace:configure.ac:1005: -1- AC_DEFINE_TRACE_LITERAL([UNUSABLE_RT_SIGNALS])
@@ -2630,19 +2626,19 @@ m4trace:configure.ac:1006: -1- AC_SUBST([SIGLIST_O])
 m4trace:configure.ac:1006: -1- AC_SUBST_TRACE([SIGLIST_O])
 m4trace:configure.ac:1006: -1- m4_pattern_allow([^SIGLIST_O$])
 m4trace:configure.ac:1010: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1605: BASH_CHECK_KERNEL_RLIMIT is expanded from...
 configure.ac:1010: the top level])
 m4trace:configure.ac:1010: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2590: _AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2606: AC_COMPILE_IFELSE is expanded from...
-../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
-../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2591: _AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2607: AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2615: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
 aclocal.m4:1605: BASH_CHECK_KERNEL_RLIMIT is expanded from...
 configure.ac:1010: the top level])
 m4trace:configure.ac:1010: -1- AC_DEFINE_TRACE_LITERAL([RLIMIT_NEEDS_KERNEL])

diff --git a/bashline.c b/bashline.c
index eafe3d92bd4c1255d233a99a7b65514560048b91..c9c19de6dee6d8721de88f49390311c4b56df907 100644 (file)
--- a/bashline.c
+++ b/bashline.c
@@ -1634,6 +1634,11 @@ bash_default_completion (text, start, end, qc, compflags)
          strvec_dispose (matches);
          matches = (char **)0;
        }
+      else if (matches && matches[1] && rl_completion_type == '!')
+       {
+         rl_completion_suppress_append = 1;
+         rl_filename_completion_desired = 0;
+       }
     }
 
   return (matches);

diff --git a/bashline.c~ b/bashline.c~
new file mode 100644 (file)
index 0000000..3c8dde7
--- /dev/null
+++ b/bashline.c~
@@ -0,0 +1,4151 @@
+/* bashline.c -- Bash's interface to the readline library. */
+
+/* Copyright (C) 1987-2013 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#if defined (READLINE)
+
+#include "bashtypes.h"
+#include "posixstat.h"
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#if defined (HAVE_GRP_H)
+#  include <grp.h>
+#endif
+
+#if defined (HAVE_NETDB_H)
+#  include <netdb.h>
+#endif
+
+#include <signal.h>
+
+#include <stdio.h>
+#include "chartypes.h"
+#include "bashansi.h"
+#include "bashintl.h"
+
+#include "shell.h"
+#include "input.h"
+#include "builtins.h"
+#include "bashhist.h"
+#include "bashline.h"
+#include "execute_cmd.h"
+#include "findcmd.h"
+#include "pathexp.h"
+#include "shmbutil.h"
+
+#include "builtins/common.h"
+
+#include <readline/rlconf.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include <glob/glob.h>
+
+#if defined (ALIAS)
+#  include "alias.h"
+#endif
+
+#if defined (PROGRAMMABLE_COMPLETION)
+#  include "pcomplete.h"
+#endif
+
+/* These should agree with the defines for emacs_mode and vi_mode in
+   rldefs.h, even though that's not a public readline header file. */
+#ifndef EMACS_EDITING_MODE
+#  define NO_EDITING_MODE      -1
+#  define EMACS_EDITING_MODE    1
+#  define VI_EDITING_MODE       0
+#endif
+
+#define RL_BOOLEAN_VARIABLE_VALUE(s)   ((s)[0] == 'o' && (s)[1] == 'n' && (s)[2] == '\0')
+
+#if defined (BRACE_COMPLETION)
+extern int bash_brace_completion __P((int, int));
+#endif /* BRACE_COMPLETION */
+
+/* To avoid including curses.h/term.h/termcap.h and that whole mess. */
+#ifdef _MINIX
+extern int tputs __P((const char *string, int nlines, void (*outx)(int)));
+#else
+extern int tputs __P((const char *string, int nlines, int (*outx)(int)));
+#endif
+
+/* Forward declarations */
+
+/* Functions bound to keys in Readline for Bash users. */
+static int shell_expand_line __P((int, int));
+static int display_shell_version __P((int, int));
+static int operate_and_get_next __P((int, int));
+
+static int bash_ignore_filenames __P((char **));
+static int bash_ignore_everything __P((char **));
+
+#if defined (BANG_HISTORY)
+static char *history_expand_line_internal __P((char *));
+static int history_expand_line __P((int, int));
+static int tcsh_magic_space __P((int, int));
+#endif /* BANG_HISTORY */
+#ifdef ALIAS
+static int alias_expand_line __P((int, int));
+#endif
+#if defined (BANG_HISTORY) && defined (ALIAS)
+static int history_and_alias_expand_line __P((int, int));
+#endif
+
+static int bash_forward_shellword __P((int, int));
+static int bash_backward_shellword __P((int, int));
+static int bash_kill_shellword __P((int, int));
+static int bash_backward_kill_shellword __P((int, int));
+
+/* Helper functions for Readline. */
+static char *restore_tilde __P((char *, char *));
+
+static char *bash_filename_rewrite_hook __P((char *, int));
+
+static void bash_directory_expansion __P((char **));
+static int bash_filename_stat_hook __P((char **));
+static int bash_command_name_stat_hook __P((char **));
+static int bash_directory_completion_hook __P((char **));
+static int filename_completion_ignore __P((char **));
+static int bash_push_line __P((void));
+
+static int executable_completion __P((const char *, int));
+
+static rl_icppfunc_t *save_directory_hook __P((void));
+static void restore_directory_hook __P((rl_icppfunc_t));
+
+static void cleanup_expansion_error __P((void));
+static void maybe_make_readline_line __P((char *));
+static void set_up_new_line __P((char *));
+
+static int check_redir __P((int));
+static char **attempt_shell_completion __P((const char *, int, int));
+static char *variable_completion_function __P((const char *, int));
+static char *hostname_completion_function __P((const char *, int));
+static char *command_subst_completion_function __P((const char *, int));
+
+static void build_history_completion_array __P((void));
+static char *history_completion_generator __P((const char *, int));
+static int dynamic_complete_history __P((int, int));
+static int bash_dabbrev_expand __P((int, int));
+
+static void initialize_hostname_list __P((void));
+static void add_host_name __P((char *));
+static void snarf_hosts_from_file __P((char *));
+static char **hostnames_matching __P((char *));
+
+static void _ignore_completion_names __P((char **, sh_ignore_func_t *));
+static int name_is_acceptable __P((const char *));
+static int test_for_directory __P((const char *));
+static int return_zero __P((const char *));
+
+static char *bash_dequote_filename __P((char *, int));
+static char *quote_word_break_chars __P((char *));
+static void set_filename_bstab __P((const char *));
+static char *bash_quote_filename __P((char *, int, char *));
+
+#ifdef _MINIX
+static void putx __P((int));
+#else
+static int putx __P((int));
+#endif
+static int bash_execute_unix_command __P((int, int));
+static void init_unix_command_map __P((void));
+static int isolate_sequence __P((char *, int, int, int *));
+
+static int set_saved_history __P((void));
+
+#if defined (ALIAS)
+static int posix_edit_macros __P((int, int));
+#endif
+
+static int bash_event_hook __P((void));
+
+#if defined (PROGRAMMABLE_COMPLETION)
+static int find_cmd_start __P((int));
+static int find_cmd_end __P((int));
+static char *find_cmd_name __P((int, int *, int *));
+static char *prog_complete_return __P((const char *, int));
+
+static char **prog_complete_matches;
+#endif
+
+/* Variables used here but defined in other files. */
+#if defined (BANG_HISTORY)
+extern int hist_verify;
+#endif
+
+extern int current_command_line_count, saved_command_line_count;
+extern int last_command_exit_value;
+extern int array_needs_making;
+extern int posixly_correct, no_symbolic_links;
+extern char *current_prompt_string, *ps1_prompt;
+extern STRING_INT_ALIST word_token_alist[];
+extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin;
+
+/* SPECIFIC_COMPLETION_FUNCTIONS specifies that we have individual
+   completion functions which indicate what type of completion should be
+   done (at or before point) that can be bound to key sequences with
+   the readline library. */
+#define SPECIFIC_COMPLETION_FUNCTIONS
+
+#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
+static int bash_specific_completion __P((int, rl_compentry_func_t *));
+
+static int bash_complete_filename_internal __P((int));
+static int bash_complete_username_internal __P((int));
+static int bash_complete_hostname_internal __P((int));
+static int bash_complete_variable_internal __P((int));
+static int bash_complete_command_internal __P((int));
+
+static int bash_complete_filename __P((int, int));
+static int bash_possible_filename_completions __P((int, int));
+static int bash_complete_username __P((int, int));
+static int bash_possible_username_completions __P((int, int));
+static int bash_complete_hostname __P((int, int));
+static int bash_possible_hostname_completions __P((int, int));
+static int bash_complete_variable __P((int, int));
+static int bash_possible_variable_completions __P((int, int));
+static int bash_complete_command __P((int, int));
+static int bash_possible_command_completions __P((int, int));
+
+static char *glob_complete_word __P((const char *, int));
+static int bash_glob_completion_internal __P((int));
+static int bash_glob_complete_word __P((int, int));
+static int bash_glob_expand_word __P((int, int));
+static int bash_glob_list_expansions __P((int, int));
+
+#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
+
+static int edit_and_execute_command __P((int, int, int, char *));
+#if defined (VI_MODE)
+static int vi_edit_and_execute_command __P((int, int));
+static int bash_vi_complete __P((int, int));
+#endif
+static int emacs_edit_and_execute_command __P((int, int));
+
+/* Non-zero once initalize_readline () has been called. */
+int bash_readline_initialized = 0;
+
+/* If non-zero, we do hostname completion, breaking words at `@' and
+   trying to complete the stuff after the `@' from our own internal
+   host list. */
+int perform_hostname_completion = 1;
+
+/* If non-zero, we don't do command completion on an empty line. */
+int no_empty_command_completion;
+
+/* Set FORCE_FIGNORE if you want to honor FIGNORE even if it ignores the
+   only possible matches.  Set to 0 if you want to match filenames if they
+   are the only possible matches, even if FIGNORE says to. */
+int force_fignore = 1;
+
+/* Perform spelling correction on directory names during word completion */
+int dircomplete_spelling = 0;
+
+/* Expand directory names during word/filename completion. */
+#if DIRCOMPLETE_EXPAND_DEFAULT
+int dircomplete_expand = 1;
+int dircomplete_expand_relpath = 1;
+#else
+int dircomplete_expand = 0;
+int dircomplete_expand_relpath = 0;
+#endif
+
+/* When non-zero, perform `normal' shell quoting on completed filenames
+   even when the completed name contains a directory name with a shell
+   variable referene, so dollar signs in a filename get quoted appropriately.
+   Set to zero to remove dollar sign (and braces or parens as needed) from
+   the set of characters that will be quoted. */
+int complete_fullquote = 1;
+
+static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:";
+static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:";
+/* )) */
+
+static const char *default_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~";        /*}*/
+static char *custom_filename_quote_characters = 0;
+static char filename_bstab[256];
+
+static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL;
+
+static int dot_in_path = 0;
+
+/* Set to non-zero when dabbrev-expand is running */
+static int dabbrev_expand_active = 0;
+
+/* What kind of quoting is performed by bash_quote_filename:
+       COMPLETE_DQUOTE = double-quoting the filename
+       COMPLETE_SQUOTE = single_quoting the filename
+       COMPLETE_BSQUOTE = backslash-quoting special chars in the filename
+*/
+#define COMPLETE_DQUOTE  1
+#define COMPLETE_SQUOTE  2
+#define COMPLETE_BSQUOTE 3
+static int completion_quoting_style = COMPLETE_BSQUOTE;
+
+/* Flag values for the final argument to bash_default_completion */
+#define DEFCOMP_CMDPOS         1
+
+/* Change the readline VI-mode keymaps into or out of Posix.2 compliance.
+   Called when the shell is put into or out of `posix' mode. */
+void
+posix_readline_initialize (on_or_off)
+     int on_or_off;
+{
+  if (on_or_off)
+    rl_variable_bind ("comment-begin", "#");
+#if defined (VI_MODE)
+  rl_bind_key_in_map (CTRL ('I'), on_or_off ? rl_insert : rl_complete, vi_insertion_keymap);
+#endif
+}
+
+void
+reset_completer_word_break_chars ()
+{
+  rl_completer_word_break_characters = perform_hostname_completion ? savestring (bash_completer_word_break_characters) : savestring (bash_nohostname_word_break_characters);
+}
+
+/* When this function returns, rl_completer_word_break_characters points to
+   dynamically allocated memory. */
+int
+enable_hostname_completion (on_or_off)
+     int on_or_off;
+{
+  int old_value;
+  char *at, *nv, *nval;
+
+  old_value = perform_hostname_completion;
+
+  if (on_or_off)
+    {
+      perform_hostname_completion = 1;
+      rl_special_prefixes = "$@";
+    }
+  else
+    {
+      perform_hostname_completion = 0;
+      rl_special_prefixes = "$";
+    }
+
+  /* Now we need to figure out how to appropriately modify and assign
+     rl_completer_word_break_characters depending on whether we want
+     hostname completion on or off. */
+
+  /* If this is the first time this has been called
+     (bash_readline_initialized == 0), use the sames values as before, but
+     allocate new memory for rl_completer_word_break_characters. */
+
+  if (bash_readline_initialized == 0 &&
+      (rl_completer_word_break_characters == 0 || 
+       rl_completer_word_break_characters == rl_basic_word_break_characters))
+    {
+      if (on_or_off)
+       rl_completer_word_break_characters = savestring (bash_completer_word_break_characters);
+      else
+       rl_completer_word_break_characters = savestring (bash_nohostname_word_break_characters);
+    }
+  else
+    {
+      /* See if we have anything to do. */
+      at = strchr (rl_completer_word_break_characters, '@');
+      if ((at == 0 && on_or_off == 0) || (at != 0 && on_or_off != 0))
+        return old_value;
+
+      /* We have something to do.  Do it. */
+      nval = (char *)xmalloc (strlen (rl_completer_word_break_characters) + 1 + on_or_off);
+
+      if (on_or_off == 0)
+       {
+         /* Turn it off -- just remove `@' from word break chars.  We want
+            to remove all occurrences of `@' from the char list, so we loop
+            rather than just copy the rest of the list over AT. */
+         for (nv = nval, at = rl_completer_word_break_characters; *at; )
+           if (*at != '@')
+             *nv++ = *at++;
+           else
+             at++;
+         *nv = '\0';
+       }
+      else
+       {
+         nval[0] = '@';
+         strcpy (nval + 1, rl_completer_word_break_characters);
+        }
+
+      free (rl_completer_word_break_characters);
+      rl_completer_word_break_characters = nval;
+    }
+
+  return (old_value);
+}
+
+/* Called once from parse.y if we are going to use readline. */
+void
+initialize_readline ()
+{
+  rl_command_func_t *func;
+  char kseq[2];
+
+  if (bash_readline_initialized)
+    return;
+
+  rl_terminal_name = get_string_value ("TERM");
+  rl_instream = stdin;
+  rl_outstream = stderr;
+
+  /* Allow conditional parsing of the ~/.inputrc file. */
+  rl_readline_name = "Bash";
+
+  /* Add bindable names before calling rl_initialize so they may be
+     referenced in the various inputrc files. */
+  rl_add_defun ("shell-expand-line", shell_expand_line, -1);
+#ifdef BANG_HISTORY
+  rl_add_defun ("history-expand-line", history_expand_line, -1);
+  rl_add_defun ("magic-space", tcsh_magic_space, -1);
+#endif
+
+  rl_add_defun ("shell-forward-word", bash_forward_shellword, -1);
+  rl_add_defun ("shell-backward-word", bash_backward_shellword, -1);
+  rl_add_defun ("shell-kill-word", bash_kill_shellword, -1);
+  rl_add_defun ("shell-backward-kill-word", bash_backward_kill_shellword, -1);
+
+#ifdef ALIAS
+  rl_add_defun ("alias-expand-line", alias_expand_line, -1);
+#  ifdef BANG_HISTORY
+  rl_add_defun ("history-and-alias-expand-line", history_and_alias_expand_line, -1);
+#  endif
+#endif
+
+  /* Backwards compatibility. */
+  rl_add_defun ("insert-last-argument", rl_yank_last_arg, -1);
+
+  rl_add_defun ("operate-and-get-next", operate_and_get_next, -1);
+  rl_add_defun ("display-shell-version", display_shell_version, -1);
+  rl_add_defun ("edit-and-execute-command", emacs_edit_and_execute_command, -1);
+
+#if defined (BRACE_COMPLETION)
+  rl_add_defun ("complete-into-braces", bash_brace_completion, -1);
+#endif
+
+#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
+  rl_add_defun ("complete-filename", bash_complete_filename, -1);
+  rl_add_defun ("possible-filename-completions", bash_possible_filename_completions, -1);
+  rl_add_defun ("complete-username", bash_complete_username, -1);
+  rl_add_defun ("possible-username-completions", bash_possible_username_completions, -1);
+  rl_add_defun ("complete-hostname", bash_complete_hostname, -1);
+  rl_add_defun ("possible-hostname-completions", bash_possible_hostname_completions, -1);
+  rl_add_defun ("complete-variable", bash_complete_variable, -1);
+  rl_add_defun ("possible-variable-completions", bash_possible_variable_completions, -1);
+  rl_add_defun ("complete-command", bash_complete_command, -1);
+  rl_add_defun ("possible-command-completions", bash_possible_command_completions, -1);
+  rl_add_defun ("glob-complete-word", bash_glob_complete_word, -1);
+  rl_add_defun ("glob-expand-word", bash_glob_expand_word, -1);
+  rl_add_defun ("glob-list-expansions", bash_glob_list_expansions, -1);
+#endif
+
+  rl_add_defun ("dynamic-complete-history", dynamic_complete_history, -1);
+  rl_add_defun ("dabbrev-expand", bash_dabbrev_expand, -1);
+
+  /* Bind defaults before binding our custom shell keybindings. */
+  if (RL_ISSTATE(RL_STATE_INITIALIZED) == 0)
+    rl_initialize ();
+
+  /* Bind up our special shell functions. */
+  rl_bind_key_if_unbound_in_map (CTRL('E'), shell_expand_line, emacs_meta_keymap);
+
+#ifdef BANG_HISTORY
+  rl_bind_key_if_unbound_in_map ('^', history_expand_line, emacs_meta_keymap);
+#endif
+
+  rl_bind_key_if_unbound_in_map (CTRL ('O'), operate_and_get_next, emacs_standard_keymap);
+  rl_bind_key_if_unbound_in_map (CTRL ('V'), display_shell_version, emacs_ctlx_keymap);
+
+  /* In Bash, the user can switch editing modes with "set -o [vi emacs]",
+     so it is not necessary to allow C-M-j for context switching.  Turn
+     off this occasionally confusing behaviour. */
+  kseq[0] = CTRL('J');
+  kseq[1] = '\0';
+  func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
+  if (func == rl_vi_editing_mode)
+    rl_unbind_key_in_map (CTRL('J'), emacs_meta_keymap);
+  kseq[0] = CTRL('M');
+  func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
+  if (func == rl_vi_editing_mode)
+    rl_unbind_key_in_map (CTRL('M'), emacs_meta_keymap);
+#if defined (VI_MODE)
+  rl_unbind_key_in_map (CTRL('E'), vi_movement_keymap);
+#endif
+
+#if defined (BRACE_COMPLETION)
+  rl_bind_key_if_unbound_in_map ('{', bash_brace_completion, emacs_meta_keymap); /*}*/
+#endif /* BRACE_COMPLETION */
+
+#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
+  rl_bind_key_if_unbound_in_map ('/', bash_complete_filename, emacs_meta_keymap);
+  rl_bind_key_if_unbound_in_map ('/', bash_possible_filename_completions, emacs_ctlx_keymap);
+
+  /* Have to jump through hoops here because there is a default binding for
+     M-~ (rl_tilde_expand) */
+  kseq[0] = '~';
+  kseq[1] = '\0';
+  func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
+  if (func == 0 || func == rl_tilde_expand)
+    rl_bind_keyseq_in_map (kseq, bash_complete_username, emacs_meta_keymap);
+
+  rl_bind_key_if_unbound_in_map ('~', bash_possible_username_completions, emacs_ctlx_keymap);
+
+  rl_bind_key_if_unbound_in_map ('@', bash_complete_hostname, emacs_meta_keymap);
+  rl_bind_key_if_unbound_in_map ('@', bash_possible_hostname_completions, emacs_ctlx_keymap);
+
+  rl_bind_key_if_unbound_in_map ('$', bash_complete_variable, emacs_meta_keymap);
+  rl_bind_key_if_unbound_in_map ('$', bash_possible_variable_completions, emacs_ctlx_keymap);
+
+  rl_bind_key_if_unbound_in_map ('!', bash_complete_command, emacs_meta_keymap);
+  rl_bind_key_if_unbound_in_map ('!', bash_possible_command_completions, emacs_ctlx_keymap);
+
+  rl_bind_key_if_unbound_in_map ('g', bash_glob_complete_word, emacs_meta_keymap);
+  rl_bind_key_if_unbound_in_map ('*', bash_glob_expand_word, emacs_ctlx_keymap);
+  rl_bind_key_if_unbound_in_map ('g', bash_glob_list_expansions, emacs_ctlx_keymap);
+
+#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
+
+  kseq[0] = TAB;
+  kseq[1] = '\0';
+  func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
+  if (func == 0 || func == rl_tab_insert)
+    rl_bind_key_in_map (TAB, dynamic_complete_history, emacs_meta_keymap);
+
+  /* Tell the completer that we want a crack first. */
+  rl_attempted_completion_function = attempt_shell_completion;
+
+  /* Tell the completer that we might want to follow symbolic links or
+     do other expansion on directory names. */
+  set_directory_hook ();
+
+  rl_filename_rewrite_hook = bash_filename_rewrite_hook;
+
+  rl_filename_stat_hook = bash_filename_stat_hook;
+
+  /* Tell the filename completer we want a chance to ignore some names. */
+  rl_ignore_some_completions_function = filename_completion_ignore;
+
+  /* Bind C-xC-e to invoke emacs and run result as commands. */
+  rl_bind_key_if_unbound_in_map (CTRL ('E'), emacs_edit_and_execute_command, emacs_ctlx_keymap);
+#if defined (VI_MODE)
+  rl_bind_key_if_unbound_in_map ('v', vi_edit_and_execute_command, vi_movement_keymap);
+#  if defined (ALIAS)
+  rl_bind_key_if_unbound_in_map ('@', posix_edit_macros, vi_movement_keymap);
+#  endif
+
+  rl_bind_key_in_map ('\\', bash_vi_complete, vi_movement_keymap);
+  rl_bind_key_in_map ('*', bash_vi_complete, vi_movement_keymap);
+  rl_bind_key_in_map ('=', bash_vi_complete, vi_movement_keymap);
+#endif
+
+  rl_completer_quote_characters = "'\"";
+
+  /* This sets rl_completer_word_break_characters and rl_special_prefixes
+     to the appropriate values, depending on whether or not hostname
+     completion is enabled. */
+  enable_hostname_completion (perform_hostname_completion);
+
+  /* characters that need to be quoted when appearing in filenames. */
+  rl_filename_quote_characters = default_filename_quote_characters;
+  set_filename_bstab (rl_filename_quote_characters);
+
+  rl_filename_quoting_function = bash_quote_filename;
+  rl_filename_dequoting_function = bash_dequote_filename;
+  rl_char_is_quoted_p = char_is_quoted;
+
+#if 0
+  /* This is superfluous and makes it impossible to use tab completion in
+     vi mode even when explicitly binding it in ~/.inputrc.  sv_strict_posix()
+     should already have called posix_readline_initialize() when
+     posixly_correct was set. */
+  if (posixly_correct)
+    posix_readline_initialize (1);
+#endif
+
+  bash_readline_initialized = 1;
+}
+
+void
+bashline_reinitialize ()
+{
+  bash_readline_initialized = 0;
+}
+
+void
+bashline_set_event_hook ()
+{
+  rl_signal_event_hook = bash_event_hook;
+}
+
+void
+bashline_reset_event_hook ()
+{
+  rl_signal_event_hook = 0;
+}
+
+/* On Sun systems at least, rl_attempted_completion_function can end up
+   getting set to NULL, and rl_completion_entry_function set to do command
+   word completion if Bash is interrupted while trying to complete a command
+   word.  This just resets all the completion functions to the right thing.
+   It's called from throw_to_top_level(). */
+void
+bashline_reset ()
+{
+  tilde_initialize ();
+  rl_attempted_completion_function = attempt_shell_completion;
+  rl_completion_entry_function = NULL;
+  rl_ignore_some_completions_function = filename_completion_ignore;
+  rl_filename_quote_characters = default_filename_quote_characters;
+  set_filename_bstab (rl_filename_quote_characters);
+
+  set_directory_hook ();
+  rl_filename_stat_hook = bash_filename_stat_hook;
+
+  bashline_reset_event_hook ();
+}
+
+/* Contains the line to push into readline. */
+static char *push_to_readline = (char *)NULL;
+
+/* Push the contents of push_to_readline into the
+   readline buffer. */
+static int
+bash_push_line ()
+{
+  if (push_to_readline)
+    {
+      rl_insert_text (push_to_readline);
+      free (push_to_readline);
+      push_to_readline = (char *)NULL;
+      rl_startup_hook = old_rl_startup_hook;
+    }
+  return 0;
+}
+
+/* Call this to set the initial text for the next line to read
+   from readline. */
+int
+bash_re_edit (line)
+     char *line;
+{
+  FREE (push_to_readline);
+
+  push_to_readline = savestring (line);
+  old_rl_startup_hook = rl_startup_hook;
+  rl_startup_hook = bash_push_line;
+
+  return (0);
+}
+
+static int
+display_shell_version (count, c)
+     int count, c;
+{
+  rl_crlf ();
+  show_shell_version (0);
+  putc ('\r', rl_outstream);
+  fflush (rl_outstream);
+  rl_on_new_line ();
+  rl_redisplay ();
+  return 0;
+}
+
+/* **************************************************************** */
+/*                                                                 */
+/*                          Readline Stuff                         */
+/*                                                                 */
+/* **************************************************************** */
+
+/* If the user requests hostname completion, then simply build a list
+   of hosts, and complete from that forever more, or at least until
+   HOSTFILE is unset. */
+
+/* THIS SHOULD BE A STRINGLIST. */
+/* The kept list of hostnames. */
+static char **hostname_list = (char **)NULL;
+
+/* The physical size of the above list. */
+static int hostname_list_size;
+
+/* The number of hostnames in the above list. */
+static int hostname_list_length;
+
+/* Whether or not HOSTNAME_LIST has been initialized. */
+int hostname_list_initialized = 0;
+
+/* Initialize the hostname completion table. */
+static void
+initialize_hostname_list ()
+{
+  char *temp;
+
+  temp = get_string_value ("HOSTFILE");
+  if (temp == 0)
+    temp = get_string_value ("hostname_completion_file");
+  if (temp == 0)
+    temp = DEFAULT_HOSTS_FILE;
+
+  snarf_hosts_from_file (temp);
+
+  if (hostname_list)
+    hostname_list_initialized++;
+}
+
+/* Add NAME to the list of hosts. */
+static void
+add_host_name (name)
+     char *name;
+{
+  if (hostname_list_length + 2 > hostname_list_size)
+    {
+      hostname_list_size = (hostname_list_size + 32) - (hostname_list_size % 32);
+      hostname_list = strvec_resize (hostname_list, hostname_list_size);
+    }
+
+  hostname_list[hostname_list_length++] = savestring (name);
+  hostname_list[hostname_list_length] = (char *)NULL;
+}
+
+#define cr_whitespace(c) ((c) == '\r' || (c) == '\n' || whitespace(c))
+
+static void
+snarf_hosts_from_file (filename)
+     char *filename;
+{
+  FILE *file;
+  char *temp, buffer[256], name[256];
+  register int i, start;
+
+  file = fopen (filename, "r");
+  if (file == 0)
+    return;
+
+  while (temp = fgets (buffer, 255, file))
+    {
+      /* Skip to first character. */
+      for (i = 0; buffer[i] && cr_whitespace (buffer[i]); i++)
+       ;
+
+      /* If comment or blank line, ignore. */
+      if (buffer[i] == '\0' || buffer[i] == '#')
+       continue;
+
+      /* If `preprocessor' directive, do the include. */
+      if (strncmp (buffer + i, "$include ", 9) == 0)
+       {
+         char *incfile, *t;
+
+         /* Find start of filename. */
+         for (incfile = buffer + i + 9; *incfile && whitespace (*incfile); incfile++)
+           ;
+
+         /* Find end of filename. */
+         for (t = incfile; *t && cr_whitespace (*t) == 0; t++)
+           ;
+
+         *t = '\0';
+
+         snarf_hosts_from_file (incfile);
+         continue;
+       }
+
+      /* Skip internet address if present. */
+      if (DIGIT (buffer[i]))
+       for (; buffer[i] && cr_whitespace (buffer[i]) == 0; i++);
+
+      /* Gobble up names.  Each name is separated with whitespace. */
+      while (buffer[i])
+       {
+         for (; cr_whitespace (buffer[i]); i++)
+           ;
+         if (buffer[i] == '\0' || buffer[i] ==  '#')
+           break;
+
+         /* Isolate the current word. */
+         for (start = i; buffer[i] && cr_whitespace (buffer[i]) == 0; i++)
+           ;
+         if (i == start)
+           continue;
+         strncpy (name, buffer + start, i - start);
+         name[i - start] = '\0';
+         add_host_name (name);
+       }
+    }
+  fclose (file);
+}
+
+/* Return the hostname list. */
+char **
+get_hostname_list ()
+{
+  if (hostname_list_initialized == 0)
+    initialize_hostname_list ();
+  return (hostname_list);
+}
+
+void
+clear_hostname_list ()
+{
+  register int i;
+
+  if (hostname_list_initialized == 0)
+    return;
+  for (i = 0; i < hostname_list_length; i++)
+    free (hostname_list[i]);
+  hostname_list_length = hostname_list_initialized = 0;
+}
+
+/* Return a NULL terminated list of hostnames which begin with TEXT.
+   Initialize the hostname list the first time if neccessary.
+   The array is malloc ()'ed, but not the individual strings. */
+static char **
+hostnames_matching (text)
+     char *text;
+{
+  register int i, len, nmatch, rsize;
+  char **result;
+
+  if (hostname_list_initialized == 0)
+    initialize_hostname_list ();
+
+  if (hostname_list_initialized == 0)
+    return ((char **)NULL);
+
+  /* Special case.  If TEXT consists of nothing, then the whole list is
+     what is desired. */
+  if (*text == '\0')
+    {
+      result = strvec_create (1 + hostname_list_length);
+      for (i = 0; i < hostname_list_length; i++)
+       result[i] = hostname_list[i];
+      result[i] = (char *)NULL;
+      return (result);
+    }
+
+  /* Scan until found, or failure. */
+  len = strlen (text);
+  result = (char **)NULL;
+  for (i = nmatch = rsize = 0; i < hostname_list_length; i++)
+    {
+      if (STREQN (text, hostname_list[i], len) == 0)
+       continue;
+
+      /* OK, it matches.  Add it to the list. */
+      if (nmatch >= (rsize - 1))
+       {
+         rsize = (rsize + 16) - (rsize % 16);
+         result = strvec_resize (result, rsize);
+       }
+
+      result[nmatch++] = hostname_list[i];
+    }
+  if (nmatch)
+    result[nmatch] = (char *)NULL;
+  return (result);
+}
+
+/* The equivalent of the Korn shell C-o operate-and-get-next-history-line
+   editing command. */
+static int saved_history_line_to_use = -1;
+static int last_saved_history_line = -1;
+
+#define HISTORY_FULL() (history_is_stifled () && history_length >= history_max_entries)
+
+static int
+set_saved_history ()
+{
+  /* XXX - compensate for assumption that history was `shuffled' if it was
+     actually not. */
+  if (HISTORY_FULL () &&
+      hist_last_line_added == 0 &&
+      saved_history_line_to_use < history_length - 1)
+    saved_history_line_to_use++;
+
+  if (saved_history_line_to_use >= 0)
+    {
+     rl_get_previous_history (history_length - saved_history_line_to_use, 0);
+     last_saved_history_line = saved_history_line_to_use;
+    }
+  saved_history_line_to_use = -1;
+  rl_startup_hook = old_rl_startup_hook;
+  return (0);
+}
+
+static int
+operate_and_get_next (count, c)
+     int count, c;
+{
+  int where;
+
+  /* Accept the current line. */
+  rl_newline (1, c);
+
+  /* Find the current line, and find the next line to use. */
+  where = where_history ();
+
+  if (HISTORY_FULL () || (where >= history_length - 1))
+    saved_history_line_to_use = where;
+  else
+    saved_history_line_to_use = where + 1;
+
+  old_rl_startup_hook = rl_startup_hook;
+  rl_startup_hook = set_saved_history;
+
+  return 0;
+}
+
+/* This vi mode command causes VI_EDIT_COMMAND to be run on the current
+   command being entered (if no explicit argument is given), otherwise on
+   a command from the history file. */
+
+#define VI_EDIT_COMMAND                "fc -e \"${VISUAL:-${EDITOR:-vi}}\""
+#define EMACS_EDIT_COMMAND     "fc -e \"${VISUAL:-${EDITOR:-emacs}}\""
+#define POSIX_VI_EDIT_COMMAND  "fc -e vi"
+
+static int
+edit_and_execute_command (count, c, editing_mode, edit_command)
+     int count, c, editing_mode;
+     char *edit_command;
+{
+  char *command, *metaval;
+  int r, rrs, metaflag;
+  sh_parser_state_t ps;
+
+  rrs = rl_readline_state;
+  saved_command_line_count = current_command_line_count;
+
+  /* Accept the current line. */
+  rl_newline (1, c);
+
+  if (rl_explicit_arg)
+    {
+      command = (char *)xmalloc (strlen (edit_command) + 8);
+      sprintf (command, "%s %d", edit_command, count);
+    }
+  else
+    {
+      /* Take the command we were just editing, add it to the history file,
+        then call fc to operate on it.  We have to add a dummy command to
+        the end of the history because fc ignores the last command (assumes
+        it's supposed to deal with the command before the `fc'). */
+      /* This breaks down when using command-oriented history and are not
+        finished with the command, so we should not ignore the last command */
+      using_history ();
+      current_command_line_count++;    /* for rl_newline above */
+      bash_add_history (rl_line_buffer);
+      current_command_line_count = 0;  /* for dummy history entry */
+      bash_add_history ("");
+      history_lines_this_session++;
+      using_history ();
+      command = savestring (edit_command);
+    }
+
+  metaval = rl_variable_value ("input-meta");
+  metaflag = RL_BOOLEAN_VARIABLE_VALUE (metaval);
+  
+  /* Now, POSIX.1-2001 and SUSv3 say that the commands executed from the
+     temporary file should be placed into the history.  We don't do that
+     yet. */
+  if (rl_deprep_term_function)
+    (*rl_deprep_term_function) ();
+  save_parser_state (&ps);
+  r = parse_and_execute (command, (editing_mode == VI_EDITING_MODE) ? "v" : "C-xC-e", SEVAL_NOHIST);
+  restore_parser_state (&ps);
+  if (rl_prep_term_function)
+    (*rl_prep_term_function) (metaflag);
+
+  current_command_line_count = saved_command_line_count;
+
+  /* Now erase the contents of the current line and undo the effects of the
+     rl_accept_line() above.  We don't even want to make the text we just
+     executed available for undoing. */
+  rl_line_buffer[0] = '\0';    /* XXX */
+  rl_point = rl_end = 0;
+  rl_done = 0;
+  rl_readline_state = rrs;
+
+  rl_forced_update_display ();
+
+  return r;
+}
+
+#if defined (VI_MODE)
+static int
+vi_edit_and_execute_command (count, c)
+     int count, c;
+{
+  if (posixly_correct)
+    return (edit_and_execute_command (count, c, VI_EDITING_MODE, POSIX_VI_EDIT_COMMAND));
+  else
+    return (edit_and_execute_command (count, c, VI_EDITING_MODE, VI_EDIT_COMMAND));
+}
+#endif /* VI_MODE */
+
+static int
+emacs_edit_and_execute_command (count, c)
+     int count, c;
+{
+  return (edit_and_execute_command (count, c, EMACS_EDITING_MODE, EMACS_EDIT_COMMAND));
+}
+
+#if defined (ALIAS)
+static int
+posix_edit_macros (count, key)
+     int count, key;
+{
+  int c;
+  char alias_name[3], *alias_value, *macro;
+
+  c = rl_read_key ();
+  alias_name[0] = '_';
+  alias_name[1] = c;
+  alias_name[2] = '\0';
+
+  alias_value = get_alias_value (alias_name);
+  if (alias_value && *alias_value)
+    {
+      macro = savestring (alias_value);
+      rl_push_macro_input (macro);
+    }
+  return 0;
+}
+#endif
+
+/* Bindable commands that move `shell-words': that is, sequences of
+   non-unquoted-metacharacters. */
+
+#define WORDDELIM(c)   (shellmeta(c) || shellblank(c))
+
+static int
+bash_forward_shellword (count, key)
+     int count, key;
+{
+  size_t slen;
+  int sindex, c, p;
+  DECLARE_MBSTATE;
+
+  if (count < 0)
+    return (bash_backward_shellword (-count, key));
+
+  /* The tricky part of this is deciding whether or not the first character
+     we're on is an unquoted metacharacter.  Not completely handled yet. */
+  /* XXX - need to test this stuff with backslash-escaped shell
+     metacharacters and unclosed single- and double-quoted strings. */
+
+  p = rl_point;
+  slen = rl_end;
+
+  while (count)
+    {
+      if (p == rl_end)
+       {
+         rl_point = rl_end;
+         return 0;
+       }
+
+      /* Are we in a quoted string?  If we are, move to the end of the quoted
+         string and continue the outer loop. We only want quoted strings, not
+         backslash-escaped characters, but char_is_quoted doesn't
+         differentiate. */
+      if (char_is_quoted (rl_line_buffer, p) && p > 0 && rl_line_buffer[p-1] != '\\')
+       {
+         do
+           ADVANCE_CHAR (rl_line_buffer, slen, p);
+         while (p < rl_end && char_is_quoted (rl_line_buffer, p));
+         count--;
+         continue;
+       }
+
+      /* Rest of code assumes we are not in a quoted string. */
+      /* Move forward until we hit a non-metacharacter. */
+      while (p < rl_end && (c = rl_line_buffer[p]) && WORDDELIM (c))
+       {
+         switch (c)
+           {
+           default:
+             ADVANCE_CHAR (rl_line_buffer, slen, p);
+             continue;         /* straight back to loop, don't increment p */
+           case '\\':
+             if (p < rl_end && rl_line_buffer[p])
+               ADVANCE_CHAR (rl_line_buffer, slen, p);
+             break;
+           case '\'':
+             p = skip_to_delim (rl_line_buffer, ++p, "'", SD_NOJMP);
+             break;
+           case '"':
+             p = skip_to_delim (rl_line_buffer, ++p, "\"", SD_NOJMP);
+             break;
+           }
+
+         if (p < rl_end)
+           p++;
+       }
+
+      if (rl_line_buffer[p] == 0 || p == rl_end)
+        {
+         rl_point = rl_end;
+         rl_ding ();
+         return 0;
+        }
+       
+      /* Now move forward until we hit a non-quoted metacharacter or EOL */
+      while (p < rl_end && (c = rl_line_buffer[p]) && WORDDELIM (c) == 0)
+       {
+         switch (c)
+           {
+           default:
+             ADVANCE_CHAR (rl_line_buffer, slen, p);
+             continue;         /* straight back to loop, don't increment p */
+           case '\\':
+             if (p < rl_end && rl_line_buffer[p])
+               ADVANCE_CHAR (rl_line_buffer, slen, p);
+             break;
+           case '\'':
+             p = skip_to_delim (rl_line_buffer, ++p, "'", SD_NOJMP);
+             break;
+           case '"':
+             p = skip_to_delim (rl_line_buffer, ++p, "\"", SD_NOJMP);
+             break;
+           }
+
+         if (p < rl_end)
+           p++;
+       }
+
+      if (p == rl_end || rl_line_buffer[p] == 0)
+       {
+         rl_point = rl_end;
+         return (0);
+       }
+
+      count--;      
+    }
+
+  rl_point = p;
+  return (0);
+}
+
+static int
+bash_backward_shellword (count, key)
+     int count, key;
+{
+  size_t slen;
+  int sindex, c, p;
+  DECLARE_MBSTATE;
+  
+  if (count < 0)
+    return (bash_forward_shellword (-count, key));
+
+  p = rl_point;
+  slen = rl_end;
+  
+  while (count)
+    {
+      if (p == 0)
+       {
+         rl_point = 0;
+         return 0;
+       }
+
+      /* Move backward until we hit a non-metacharacter. */
+      while (p > 0)
+       {
+         c = rl_line_buffer[p];
+         if (WORDDELIM (c) && char_is_quoted (rl_line_buffer, p) == 0)
+           BACKUP_CHAR (rl_line_buffer, slen, p);
+         break;
+       }
+
+      if (p == 0)
+       {
+         rl_point = 0;
+         return 0;
+       }
+
+      /* Now move backward until we hit a metacharacter or BOL. */
+      while (p > 0)
+       {
+         c = rl_line_buffer[p];
+         if (WORDDELIM (c) && char_is_quoted (rl_line_buffer, p) == 0)
+           break;
+         BACKUP_CHAR (rl_line_buffer, slen, p);
+       }
+
+      count--;
+    }
+
+  rl_point = p;
+  return 0;
+}
+
+static int
+bash_kill_shellword (count, key)
+     int count, key;
+{
+  int p;
+
+  if (count < 0)
+    return (bash_backward_kill_shellword (-count, key));
+
+  p = rl_point;
+  bash_forward_shellword (count, key);
+
+  if (rl_point != p)
+    rl_kill_text (p, rl_point);
+
+  rl_point = p;
+  if (rl_editing_mode == 1)    /* 1 == emacs_mode */
+    rl_mark = rl_point;
+
+  return 0;
+}
+
+static int
+bash_backward_kill_shellword (count, key)
+     int count, key;
+{
+  int p;
+
+  if (count < 0)
+    return (bash_kill_shellword (-count, key));
+
+  p = rl_point;
+  bash_backward_shellword (count, key);
+
+  if (rl_point != p)
+    rl_kill_text (p, rl_point);
+
+  if (rl_editing_mode == 1)    /* 1 == emacs_mode */
+    rl_mark = rl_point;
+
+  return 0;
+}
+
+
+/* **************************************************************** */
+/*                                                                 */
+/*                     How To Do Shell Completion                  */
+/*                                                                 */
+/* **************************************************************** */
+
+#define COMMAND_SEPARATORS ";|&{(`"
+/* )} */ 
+#define COMMAND_SEPARATORS_PLUS_WS ";|&{(` \t"
+/* )} */ 
+
+/* check for redirections and other character combinations that are not
+   command separators */
+static int
+check_redir (ti)
+     int ti;
+{
+  register int this_char, prev_char;
+
+  /* Handle the two character tokens `>&', `<&', and `>|'.
+     We are not in a command position after one of these. */
+  this_char = rl_line_buffer[ti];
+  prev_char = rl_line_buffer[ti - 1];
+
+  if ((this_char == '&' && (prev_char == '<' || prev_char == '>')) ||
+      (this_char == '|' && prev_char == '>'))
+    return (1);
+  else if (this_char == '{' && prev_char == '$') /*}*/
+    return (1);
+#if 0  /* Not yet */
+  else if (this_char == '(' && prev_char == '$') /*)*/
+    return (1);
+  else if (this_char == '(' && prev_char == '<') /*)*/
+    return (1);
+#if defined (EXTENDED_GLOB)
+  else if (extended_glob && this_char == '(' && prev_char == '!') /*)*/
+    return (1);
+#endif
+#endif
+  else if (char_is_quoted (rl_line_buffer, ti))
+    return (1);
+  return (0);
+}
+
+#if defined (PROGRAMMABLE_COMPLETION)
+/*
+ * XXX - because of the <= start test, and setting os = s+1, this can
+ * potentially return os > start.  This is probably not what we want to
+ * happen, but fix later after 2.05a-release.
+ */
+static int
+find_cmd_start (start)
+     int start;
+{
+  register int s, os;
+
+  os = 0;
+  /* Flags == SD_NOJMP only because we want to skip over command substitutions
+     in assignment statements.  Have to test whether this affects `standalone'
+     command substitutions as individual words. */
+  while (((s = skip_to_delim (rl_line_buffer, os, COMMAND_SEPARATORS, SD_NOJMP/*|SD_NOSKIPCMD*/)) <= start) &&
+        rl_line_buffer[s])
+    os = s+1;
+  return os;
+}
+
+static int
+find_cmd_end (end)
+     int end;
+{
+  register int e;
+
+  e = skip_to_delim (rl_line_buffer, end, COMMAND_SEPARATORS, SD_NOJMP);
+  return e;
+}
+
+static char *
+find_cmd_name (start, sp, ep)
+     int start;
+     int *sp, *ep;
+{
+  char *name;
+  register int s, e;
+
+  for (s = start; whitespace (rl_line_buffer[s]); s++)
+    ;
+
+  /* skip until a shell break character */
+  e = skip_to_delim (rl_line_buffer, s, "()<>;&| \t\n", SD_NOJMP);
+
+  name = substring (rl_line_buffer, s, e);
+
+  if (sp)
+    *sp = s;
+  if (ep)
+    *ep = e;
+
+  return (name);
+}
+
+static char *
+prog_complete_return (text, matchnum)
+     const char *text;
+     int matchnum;
+{
+  static int ind;
+
+  if (matchnum == 0)
+    ind = 0;
+
+  if (prog_complete_matches == 0 || prog_complete_matches[ind] == 0)
+    return (char *)NULL;
+  return (prog_complete_matches[ind++]);
+}
+
+#endif /* PROGRAMMABLE_COMPLETION */
+
+/* Do some completion on TEXT.  The indices of TEXT in RL_LINE_BUFFER are
+   at START and END.  Return an array of matches, or NULL if none. */
+static char **
+attempt_shell_completion (text, start, end)
+     const char *text;
+     int start, end;
+{
+  int in_command_position, ti, saveti, qc, dflags;
+  char **matches, *command_separator_chars;
+
+  command_separator_chars = COMMAND_SEPARATORS;
+  matches = (char **)NULL;
+  rl_ignore_some_completions_function = filename_completion_ignore;
+
+  rl_filename_quote_characters = default_filename_quote_characters;
+  set_filename_bstab (rl_filename_quote_characters);
+  set_directory_hook ();
+  rl_filename_stat_hook = bash_filename_stat_hook;
+
+  /* Determine if this could be a command word.  It is if it appears at
+     the start of the line (ignoring preceding whitespace), or if it
+     appears after a character that separates commands.  It cannot be a
+     command word if we aren't at the top-level prompt. */
+  ti = start - 1;
+  saveti = qc = -1;
+
+  while ((ti > -1) && (whitespace (rl_line_buffer[ti])))
+    ti--;
+
+#if 1
+  /* If this is an open quote, maybe we're trying to complete a quoted
+     command name. */
+  if (ti >= 0 && (rl_line_buffer[ti] == '"' || rl_line_buffer[ti] == '\''))
+    {
+      qc = rl_line_buffer[ti];
+      saveti = ti--;
+      while (ti > -1 && (whitespace (rl_line_buffer[ti])))
+       ti--;
+    }
+#endif
+      
+  in_command_position = 0;
+  if (ti < 0)
+    {
+      /* Only do command completion at the start of a line when we
+        are prompting at the top level. */
+      if (current_prompt_string == ps1_prompt)
+       in_command_position++;
+      else if (parser_in_command_position ())
+       in_command_position++;
+    }
+  else if (member (rl_line_buffer[ti], command_separator_chars))
+    {
+      in_command_position++;
+
+      if (check_redir (ti) == 1)
+       in_command_position = 0;
+    }
+  else
+    {
+      /* This still could be in command position.  It is possible
+        that all of the previous words on the line are variable
+        assignments. */
+    }
+
+  /* Check that we haven't incorrectly flagged a closed command substitution
+     as indicating we're in a command position. */
+  if (in_command_position && ti >= 0 && rl_line_buffer[ti] == '`' &&
+       *text != '`' && unclosed_pair (rl_line_buffer, end, "`") == 0)
+    in_command_position = 0;
+
+  /* Special handling for command substitution.  If *TEXT is a backquote,
+     it can be the start or end of an old-style command substitution, or
+     unmatched.  If it's unmatched, both calls to unclosed_pair will
+     succeed.  Don't bother if readline found a single quote and we are
+     completing on the substring.  */
+  if (*text == '`' && rl_completion_quote_character != '\'' &&
+       (in_command_position || (unclosed_pair (rl_line_buffer, start, "`") &&
+                                unclosed_pair (rl_line_buffer, end, "`"))))
+    matches = rl_completion_matches (text, command_subst_completion_function);
+
+#if defined (PROGRAMMABLE_COMPLETION)
+  /* Attempt programmable completion. */
+  if (matches == 0 && (in_command_position == 0 || text[0] == '\0') &&
+      prog_completion_enabled && (progcomp_size () > 0) &&
+      current_prompt_string == ps1_prompt)
+    {
+      int s, e, s1, e1, os, foundcs;
+      char *n;
+
+      /* XXX - don't free the members */
+      if (prog_complete_matches)
+       free (prog_complete_matches);
+      prog_complete_matches = (char **)NULL;
+
+      os = start;
+      n = 0;
+      s = find_cmd_start (os);
+      e = find_cmd_end (end);
+      do
+       {
+         /* Skip over assignment statements preceding a command name.  If we
+            don't find a command name at all, we can perform command name
+            completion.  If we find a partial command name, we should perform
+            command name completion on it. */
+         FREE (n);
+         n = find_cmd_name (s, &s1, &e1);
+         s = e1 + 1;
+       }
+      while (assignment (n, 0));
+      s = s1;          /* reset to index where name begins */
+
+      if (start == 0 && end == 0 && e != 0 && text[0] == '\0') /* beginning of non-empty line */
+        foundcs = 0;
+      else if (start == end && start == s1 && e != 0 && e1 > end)      /* beginning of command name, leading whitespace */
+       foundcs = 0;
+      else if (e == 0 && e == s && text[0] == '\0')    /* beginning of empty line */
+        prog_complete_matches = programmable_completions ("_EmptycmD_", text, s, e, &foundcs);
+      else if (start == end && text[0] == '\0' && s1 > start && whitespace (rl_line_buffer[start]))
+        foundcs = 0;           /* whitespace before command name */
+      else if (e > s && assignment (n, 0) == 0)
+       prog_complete_matches = programmable_completions (n, text, s, e, &foundcs);
+      else if (s >= e && n[0] == '\0' && text[0] == '\0' && start > 0)
+        {
+          foundcs = 0; /* empty command name following assignments */
+          in_command_position = 1;
+        }
+      else if (s == start && e == end && STREQ (n, text) && start > 0)
+        {
+          foundcs = 0; /* partial command name following assignments */
+          in_command_position = 1;
+        }
+      else
+       foundcs = 0;
+      FREE (n);
+      /* XXX - if we found a COMPSPEC for the command, just return whatever
+        the programmable completion code returns, and disable the default
+        filename completion that readline will do unless the COPT_DEFAULT
+        option has been set with the `-o default' option to complete or
+        compopt. */
+      if (foundcs)
+       {
+         pcomp_set_readline_variables (foundcs, 1);
+         /* Turn what the programmable completion code returns into what
+            readline wants.  I should have made compute_lcd_of_matches
+            external... */
+         matches = rl_completion_matches (text, prog_complete_return);
+         if ((foundcs & COPT_DEFAULT) == 0)
+           rl_attempted_completion_over = 1;   /* no default */
+         if (matches || ((foundcs & COPT_BASHDEFAULT) == 0))
+           return (matches);
+       }
+    }
+#endif
+
+  if (matches == 0)
+    {
+      dflags = 0;
+      if (in_command_position)
+       dflags |= DEFCOMP_CMDPOS;
+      matches = bash_default_completion (text, start, end, qc, dflags);
+    }
+
+  return matches;
+}
+
+char **
+bash_default_completion (text, start, end, qc, compflags)
+     const char *text;
+     int start, end, qc, compflags;
+{
+  char **matches, *t;
+
+  matches = (char **)NULL;
+
+  /* New posix-style command substitution or variable name? */
+  if (!matches && *text == '$')
+    {
+      if (qc != '\'' && text[1] == '(') /* ) */
+       matches = rl_completion_matches (text, command_subst_completion_function);
+      else
+       {
+         matches = rl_completion_matches (text, variable_completion_function);
+         if (matches && matches[0] && matches[1] == 0)
+           {
+             t = savestring (matches[0]);
+             bash_filename_stat_hook (&t);
+             /* doesn't use test_for_directory because that performs tilde
+                expansion */
+             if (file_isdir (t))
+               rl_completion_append_character = '/';
+             free (t);
+           }
+       }
+    }
+
+  /* If the word starts in `~', and there is no slash in the word, then
+     try completing this word as a username. */
+  if (matches == 0 && *text == '~' && mbschr (text, '/') == 0)
+    matches = rl_completion_matches (text, rl_username_completion_function);
+
+  /* Another one.  Why not?  If the word starts in '@', then look through
+     the world of known hostnames for completion first. */
+  if (matches == 0 && perform_hostname_completion && *text == '@')
+    matches = rl_completion_matches (text, hostname_completion_function);
+
+  /* And last, (but not least) if this word is in a command position, then
+     complete over possible command names, including aliases, functions,
+     and command names. */
+  if (matches == 0 && (compflags & DEFCOMP_CMDPOS))
+    {
+      /* If END == START and text[0] == 0, we are trying to complete an empty
+        command word. */
+      if (no_empty_command_completion && end == start && text[0] == '\0')
+       {
+         matches = (char **)NULL;
+         rl_ignore_some_completions_function = bash_ignore_everything;
+       }
+      else
+       {
+#define CMD_IS_DIR(x)  (absolute_pathname(x) == 0 && absolute_program(x) == 0 && *(x) != '~' && test_for_directory (x))
+
+         dot_in_path = 0;
+         matches = rl_completion_matches (text, command_word_completion_function);
+
+         /* If we are attempting command completion and nothing matches, we
+            do not want readline to perform filename completion for us.  We
+            still want to be able to complete partial pathnames, so set the
+            completion ignore function to something which will remove
+            filenames and leave directories in the match list. */
+         if (matches == (char **)NULL)
+           rl_ignore_some_completions_function = bash_ignore_filenames;
+         else if (matches[1] == 0 && CMD_IS_DIR(matches[0]) && dot_in_path == 0)
+           /* If we found a single match, without looking in the current
+              directory (because it's not in $PATH), but the found name is
+              also a command in the current directory, suppress appending any
+              terminating character, since it's ambiguous. */
+           {
+             rl_completion_suppress_append = 1;
+             rl_filename_completion_desired = 0;
+           }
+         else if (matches[0] && matches[1] && STREQ (matches[0], matches[1]) && CMD_IS_DIR (matches[0]))
+           /* There are multiple instances of the same match (duplicate
+              completions haven't yet been removed).  In this case, all of
+              the matches will be the same, and the duplicate removal code
+              will distill them all down to one.  We turn on
+              rl_completion_suppress_append for the same reason as above.
+              Remember: we only care if there's eventually a single unique
+              completion.  If there are multiple completions this won't
+              make a difference and the problem won't occur. */
+           {
+             rl_completion_suppress_append = 1;
+             rl_filename_completion_desired = 0;
+           }
+       }
+    }
+
+  /* This could be a globbing pattern, so try to expand it using pathname
+     expansion. */
+  if (!matches && glob_pattern_p (text))
+    {
+      matches = rl_completion_matches (text, glob_complete_word);
+      /* A glob expression that matches more than one filename is problematic.
+        If we match more than one filename, punt. */
+      if (matches && matches[1] && (rl_completion_type == TAB || rl_completion_type == '!'))
+       {
+         strvec_dispose (matches);
+         matches = (char **)0;
+       }
+    }
+
+  return (matches);
+}
+
+static int
+bash_command_name_stat_hook (name)
+     char **name;
+{
+  char *cname, *result;
+
+  cname = *name;
+  /* XXX - we could do something here with converting aliases, builtins,
+     and functions into something that came out as executable, but we don't. */
+  result = search_for_command (cname, 0);
+  if (result)
+    {
+      *name = result;
+      return 1;
+    }
+  return 0;
+}
+
+static int
+executable_completion (filename, searching_path)
+     const char *filename;
+     int searching_path;
+{
+  char *f;
+  int r;
+
+  f = savestring (filename);
+  bash_directory_completion_hook (&f);
+  
+  r = searching_path ? executable_file (f) : executable_or_directory (f);
+  free (f);
+  return r;
+}
+
+/* This is the function to call when the word to complete is in a position
+   where a command word can be found.  It grovels $PATH, looking for commands
+   that match.  It also scans aliases, function names, and the shell_builtin
+   table. */
+char *
+command_word_completion_function (hint_text, state)
+     const char *hint_text;
+     int state;
+{
+  static char *hint = (char *)NULL;
+  static char *path = (char *)NULL;
+  static char *val = (char *)NULL;
+  static char *filename_hint = (char *)NULL;
+  static char *dequoted_hint = (char *)NULL;
+  static char *directory_part = (char *)NULL;
+  static char **glob_matches = (char **)NULL;
+  static int path_index, hint_len, dequoted_len, istate, igncase;
+  static int mapping_over, local_index, searching_path, hint_is_dir;
+  static int old_glob_ignore_case, globpat;
+  static SHELL_VAR **varlist = (SHELL_VAR **)NULL;
+#if defined (ALIAS)
+  static alias_t **alias_list = (alias_t **)NULL;
+#endif /* ALIAS */
+  char *temp, *cval;
+
+  /* We have to map over the possibilities for command words.  If we have
+     no state, then make one just for that purpose. */
+  if (state == 0)
+    {
+      rl_filename_stat_hook = bash_command_name_stat_hook;
+
+      if (dequoted_hint && dequoted_hint != hint)
+       free (dequoted_hint);
+      if (hint)
+       free (hint);
+
+      mapping_over = searching_path = 0;
+      hint_is_dir = CMD_IS_DIR (hint_text);
+      val = (char *)NULL;
+
+      temp = rl_variable_value ("completion-ignore-case");
+      igncase = RL_BOOLEAN_VARIABLE_VALUE (temp);
+
+      if (glob_matches)
+       {
+         free (glob_matches);
+         glob_matches = (char **)NULL;
+       }
+
+      globpat = glob_pattern_p (hint_text);
+
+      /* If this is an absolute program name, do not check it against
+        aliases, reserved words, functions or builtins.  We must check
+        whether or not it is unique, and, if so, whether that filename
+        is executable. */
+      if (globpat || absolute_program (hint_text))
+       {
+         /* Perform tilde expansion on what's passed, so we don't end up
+            passing filenames with tildes directly to stat(). */
+         if (*hint_text == '~')
+           {
+             hint = bash_tilde_expand (hint_text, 0);
+             directory_part = savestring (hint_text);
+             temp = strchr (directory_part, '/');
+             if (temp)
+               *temp = 0;
+             else
+               {
+                 free (directory_part);
+                 directory_part = (char *)NULL;
+               }
+           }
+         else
+           hint = savestring (hint_text);
+
+         dequoted_hint = hint;
+         /* If readline's completer found a quote character somewhere, but
+            didn't set the quote character, there must have been a quote
+            character embedded in the filename.  It can't be at the start of
+            the filename, so we need to dequote the filename before we look
+            in the file system for it. */
+         if (rl_completion_found_quote && rl_completion_quote_character == 0)
+           {
+             dequoted_hint = bash_dequote_filename (hint, 0);
+             free (hint);
+             hint = dequoted_hint;
+           }
+         dequoted_len = hint_len = strlen (hint);
+
+         if (filename_hint)
+           free (filename_hint);
+
+         filename_hint = savestring (hint);
+
+         istate = 0;
+
+         if (globpat)
+           {
+             mapping_over = 5;
+             goto globword;
+           }
+         else
+           {
+            if (dircomplete_expand && path_dot_or_dotdot (filename_hint))
+               {
+                 dircomplete_expand = 0;
+                 set_directory_hook ();
+                 dircomplete_expand = 1;
+               }
+             mapping_over = 4;
+             goto inner;
+           }
+       }
+
+      dequoted_hint = hint = savestring (hint_text);
+      dequoted_len = hint_len = strlen (hint);
+
+      if (rl_completion_found_quote && rl_completion_quote_character == 0)
+       {
+         dequoted_hint = bash_dequote_filename (hint, 0);
+         dequoted_len = strlen (dequoted_hint);
+       }
+      
+      path = get_string_value ("PATH");
+      path_index = dot_in_path = 0;
+
+      /* Initialize the variables for each type of command word. */
+      local_index = 0;
+
+      if (varlist)
+       free (varlist);
+
+      varlist = all_visible_functions ();
+
+#if defined (ALIAS)
+      if (alias_list)
+       free (alias_list);
+
+      alias_list = all_aliases ();
+#endif /* ALIAS */
+    }
+
+  /* mapping_over says what we are currently hacking.  Note that every case
+     in this list must fall through when there are no more possibilities. */
+
+  switch (mapping_over)
+    {
+    case 0:                    /* Aliases come first. */
+#if defined (ALIAS)
+      while (alias_list && alias_list[local_index])
+       {
+         register char *alias;
+
+         alias = alias_list[local_index++]->name;
+
+         if (STREQN (alias, hint, hint_len))
+           return (savestring (alias));
+       }
+#endif /* ALIAS */
+      local_index = 0;
+      mapping_over++;
+
+    case 1:                    /* Then shell reserved words. */
+      {
+       while (word_token_alist[local_index].word)
+         {
+           register char *reserved_word;
+
+           reserved_word = word_token_alist[local_index++].word;
+
+           if (STREQN (reserved_word, hint, hint_len))
+             return (savestring (reserved_word));
+         }
+       local_index = 0;
+       mapping_over++;
+      }
+
+    case 2:                    /* Then function names. */
+      while (varlist && varlist[local_index])
+       {
+         register char *varname;
+
+         varname = varlist[local_index++]->name;
+
+         if (STREQN (varname, hint, hint_len))
+           return (savestring (varname));
+       }
+      local_index = 0;
+      mapping_over++;
+
+    case 3:                    /* Then shell builtins. */
+      for (; local_index < num_shell_builtins; local_index++)
+       {
+         /* Ignore it if it doesn't have a function pointer or if it
+            is not currently enabled. */
+         if (!shell_builtins[local_index].function ||
+             (shell_builtins[local_index].flags & BUILTIN_ENABLED) == 0)
+           continue;
+
+         if (STREQN (shell_builtins[local_index].name, hint, hint_len))
+           {
+             int i = local_index++;
+
+             return (savestring (shell_builtins[i].name));
+           }
+       }
+      local_index = 0;
+      mapping_over++;
+    }
+
+globword:
+  /* Limited support for completing command words with globbing chars.  Only
+     a single match (multiple matches that end up reducing the number of
+     characters in the common prefix are bad) will ever be returned on
+     regular completion. */
+  if (globpat)
+    {
+      if (state == 0)
+       {
+         glob_ignore_case = igncase;
+         glob_matches = shell_glob_filename (hint);
+         glob_ignore_case = old_glob_ignore_case;
+
+         if (GLOB_FAILED (glob_matches) || glob_matches == 0)
+           {
+             glob_matches = (char **)NULL;
+             return ((char *)NULL);
+           }
+
+         local_index = 0;
+               
+         if (glob_matches[1] && rl_completion_type == TAB)     /* multiple matches are bad */
+           return ((char *)NULL);
+       }
+
+      while (val = glob_matches[local_index++])
+        {
+         if (executable_or_directory (val))
+           {
+             if (*hint_text == '~' && directory_part)
+               {
+                 temp = restore_tilde (val, directory_part);
+                 free (val);
+                 val = temp;
+               }
+             return (val);
+           }
+         free (val);
+        }
+
+      glob_ignore_case = old_glob_ignore_case;
+      return ((char *)NULL);
+    }
+
+  /* If the text passed is a directory in the current directory, return it
+     as a possible match.  Executables in directories in the current
+     directory can be specified using relative pathnames and successfully
+     executed even when `.' is not in $PATH. */
+  if (hint_is_dir)
+    {
+      hint_is_dir = 0; /* only return the hint text once */
+      return (savestring (hint_text));
+    }
+    
+  /* Repeatedly call filename_completion_function while we have
+     members of PATH left.  Question:  should we stat each file?
+     Answer: we call executable_file () on each file. */
+ outer:
+
+  istate = (val != (char *)NULL);
+
+  if (istate == 0)
+    {
+      char *current_path;
+
+      /* Get the next directory from the path.  If there is none, then we
+        are all done. */
+      if (path == 0 || path[path_index] == 0 ||
+         (current_path = extract_colon_unit (path, &path_index)) == 0)
+       return ((char *)NULL);
+
+      searching_path = 1;
+      if (*current_path == 0)
+       {
+         free (current_path);
+         current_path = savestring (".");
+       }
+
+      if (*current_path == '~')
+       {
+         char *t;
+
+         t = bash_tilde_expand (current_path, 0);
+         free (current_path);
+         current_path = t;
+       }
+
+      if (current_path[0] == '.' && current_path[1] == '\0')
+       dot_in_path = 1;
+
+      if (filename_hint)
+       free (filename_hint);
+
+      filename_hint = sh_makepath (current_path, hint, 0);
+      free (current_path);             /* XXX */
+    }
+
+ inner:
+  val = rl_filename_completion_function (filename_hint, istate);
+  if (mapping_over == 4 && dircomplete_expand)
+    set_directory_hook ();
+
+  istate = 1;
+
+  if (val == 0)
+    {
+      /* If the hint text is an absolute program, then don't bother
+        searching through PATH. */
+      if (absolute_program (hint))
+       return ((char *)NULL);
+
+      goto outer;
+    }
+  else
+    {
+      int match, freetemp;
+
+      if (absolute_program (hint))
+       {
+         if (igncase == 0)
+           match = strncmp (val, hint, hint_len) == 0;
+         else
+           match = strncasecmp (val, hint, hint_len) == 0;
+
+         /* If we performed tilde expansion, restore the original
+            filename. */
+         if (*hint_text == '~')
+           temp = restore_tilde (val, directory_part);
+         else
+           temp = savestring (val);
+         freetemp = 1;
+       }
+      else
+       {
+         temp = strrchr (val, '/');
+
+         if (temp)
+           {
+             temp++;
+             if (igncase == 0)
+               freetemp = match = strncmp (temp, hint, hint_len) == 0;
+             else
+               freetemp = match = strncasecmp (temp, hint, hint_len) == 0;
+             if (match)
+               temp = savestring (temp);
+           }
+         else
+           freetemp = match = 0;
+       }
+
+      /* If we have found a match, and it is an executable file, return it.
+        We don't return directory names when searching $PATH, since the
+        bash execution code won't find executables in directories which
+        appear in directories in $PATH when they're specified using
+        relative pathnames.  */
+#if 0
+      /* If we're not searching $PATH and we have a relative pathname, we
+        need to re-canonicalize it before testing whether or not it's an
+        executable or a directory so the shell treats .. relative to $PWD
+        according to the physical/logical option.  The shell already
+        canonicalizes the directory name in order to tell readline where
+        to look, so not doing it here will be inconsistent. */
+      /* XXX -- currently not used -- will introduce more inconsistency,
+        since shell does not canonicalize ../foo before passing it to
+        shell_execve().  */
+      if (match && searching_path == 0 && *val == '.')
+       {
+         char *t, *t1;
+
+         t = get_working_directory ("command-word-completion");
+         t1 = make_absolute (val, t);
+         free (t);
+         cval = sh_canonpath (t1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
+       }
+      else
+#endif
+       cval = val;
+
+      if (match && executable_completion ((searching_path ? val : cval), searching_path))
+       {
+         if (cval != val)
+           free (cval);
+         free (val);
+         val = "";             /* So it won't be NULL. */
+         return (temp);
+       }
+      else
+       {
+         if (freetemp)
+           free (temp);
+         if (cval != val)
+           free (cval);
+         free (val);
+         goto inner;
+       }
+    }
+}
+
+/* Completion inside an unterminated command substitution. */
+static char *
+command_subst_completion_function (text, state)
+     const char *text;
+     int state;
+{
+  static char **matches = (char **)NULL;
+  static const char *orig_start;
+  static char *filename_text = (char *)NULL;
+  static int cmd_index, start_len;
+  char *value;
+
+  if (state == 0)
+    {
+      if (filename_text)
+       free (filename_text);
+      orig_start = text;
+      if (*text == '`')
+       text++;
+      else if (*text == '$' && text[1] == '(') /* ) */
+       text += 2;
+      /* If the text was quoted, suppress any quote character that the
+        readline completion code would insert. */
+      rl_completion_suppress_quote = 1;
+      start_len = text - orig_start;
+      filename_text = savestring (text);
+      if (matches)
+       free (matches);
+
+      /*
+       * At this point we can entertain the idea of re-parsing
+       * `filename_text' into a (possibly incomplete) command name and
+       * arguments, and doing completion based on that.  This is
+       * currently very rudimentary, but it is a small improvement.
+       */
+      for (value = filename_text + strlen (filename_text) - 1; value > filename_text; value--)
+        if (whitespace (*value) || member (*value, COMMAND_SEPARATORS))
+          break;
+      if (value <= filename_text)
+       matches = rl_completion_matches (filename_text, command_word_completion_function);
+      else
+       {
+         value++;
+         start_len += value - filename_text;
+         if (whitespace (value[-1]))
+           matches = rl_completion_matches (value, rl_filename_completion_function);
+         else
+           matches = rl_completion_matches (value, command_word_completion_function);
+       }
+
+      /* If there is more than one match, rl_completion_matches has already
+        put the lcd in matches[0].  Skip over it. */
+      cmd_index = matches && matches[0] && matches[1];
+
+      /* If there's a single match and it's a directory, set the append char
+        to the expected `/'.  Otherwise, don't append anything. */
+      if (matches && matches[0] && matches[1] == 0 && test_for_directory (matches[0]))
+       rl_completion_append_character = '/';
+      else
+       rl_completion_suppress_append = 1;
+    }
+
+  if (matches == 0 || matches[cmd_index] == 0)
+    {
+      rl_filename_quoting_desired = 0; /* disable quoting */
+      return ((char *)NULL);
+    }
+  else
+    {
+      value = (char *)xmalloc (1 + start_len + strlen (matches[cmd_index]));
+
+      if (start_len == 1)
+       value[0] = *orig_start;
+      else
+       strncpy (value, orig_start, start_len);
+
+      strcpy (value + start_len, matches[cmd_index]);
+
+      cmd_index++;
+      return (value);
+    }
+}
+
+/* Okay, now we write the entry_function for variable completion. */
+static char *
+variable_completion_function (text, state)
+     const char *text;
+     int state;
+{
+  static char **varlist = (char **)NULL;
+  static int varlist_index;
+  static char *varname = (char *)NULL;
+  static int namelen;
+  static int first_char, first_char_loc;
+
+  if (!state)
+    {
+      if (varname)
+       free (varname);
+
+      first_char_loc = 0;
+      first_char = text[0];
+
+      if (first_char == '$')
+       first_char_loc++;
+
+      if (text[first_char_loc] == '{')
+       first_char_loc++;
+
+      varname = savestring (text + first_char_loc);
+
+      namelen = strlen (varname);
+      if (varlist)
+       strvec_dispose (varlist);
+
+      varlist = all_variables_matching_prefix (varname);
+      varlist_index = 0;
+    }
+
+  if (!varlist || !varlist[varlist_index])
+    {
+      return ((char *)NULL);
+    }
+  else
+    {
+      char *value;
+
+      value = (char *)xmalloc (4 + strlen (varlist[varlist_index]));
+
+      if (first_char_loc)
+       {
+         value[0] = first_char;
+         if (first_char_loc == 2)
+           value[1] = '{';
+       }
+
+      strcpy (value + first_char_loc, varlist[varlist_index]);
+      if (first_char_loc == 2)
+       strcat (value, "}");
+
+      varlist_index++;
+      return (value);
+    }
+}
+
+/* How about a completion function for hostnames? */
+static char *
+hostname_completion_function (text, state)
+     const char *text;
+     int state;
+{
+  static char **list = (char **)NULL;
+  static int list_index = 0;
+  static int first_char, first_char_loc;
+
+  /* If we don't have any state, make some. */
+  if (state == 0)
+    {
+      FREE (list);
+
+      list = (char **)NULL;
+
+      first_char_loc = 0;
+      first_char = *text;
+
+      if (first_char == '@')
+       first_char_loc++;
+
+      list = hostnames_matching ((char *)text+first_char_loc);
+      list_index = 0;
+    }
+
+  if (list && list[list_index])
+    {
+      char *t;
+
+      t = (char *)xmalloc (2 + strlen (list[list_index]));
+      *t = first_char;
+      strcpy (t + first_char_loc, list[list_index]);
+      list_index++;
+      return (t);
+    }
+
+  return ((char *)NULL);
+}
+
+/*
+ * A completion function for service names from /etc/services (or wherever).
+ */
+char *
+bash_servicename_completion_function (text, state)
+     const char *text;
+     int state;
+{
+#if defined (__WIN32__) || defined (__OPENNT) || !defined (HAVE_GETSERVENT)
+  return ((char *)NULL);
+#else
+  static char *sname = (char *)NULL;
+  static struct servent *srvent;
+  static int snamelen, firstc;
+  char *value;
+  char **alist, *aentry;
+  int afound;
+
+  if (state == 0)
+    {
+      FREE (sname);
+      firstc = *text;
+
+      sname = savestring (text);
+      snamelen = strlen (sname);
+      setservent (0);
+    }
+
+  while (srvent = getservent ())
+    {
+      afound = 0;
+      if (snamelen == 0 || (STREQN (sname, srvent->s_name, snamelen)))
+       break;
+      /* Not primary, check aliases */
+      for (alist = srvent->s_aliases; *alist; alist++)
+       {
+         aentry = *alist;
+         if (STREQN (sname, aentry, snamelen))
+           {
+             afound = 1;
+             break;
+           }
+       }
+
+      if (afound)
+       break;
+    }
+
+  if (srvent == 0)
+    {
+      endservent ();
+      return ((char *)NULL);
+    }
+
+  value = afound ? savestring (aentry) : savestring (srvent->s_name);
+  return value;
+#endif
+}
+
+/*
+ * A completion function for group names from /etc/group (or wherever).
+ */
+char *
+bash_groupname_completion_function (text, state)
+     const char *text;
+     int state;
+{
+#if defined (__WIN32__) || defined (__OPENNT) || !defined (HAVE_GRP_H)
+  return ((char *)NULL);
+#else
+  static char *gname = (char *)NULL;
+  static struct group *grent;
+  static int gnamelen;
+  char *value;
+
+  if (state == 0)
+    {
+      FREE (gname);
+      gname = savestring (text);
+      gnamelen = strlen (gname);
+
+      setgrent ();
+    }
+
+  while (grent = getgrent ())
+    {
+      if (gnamelen == 0 || (STREQN (gname, grent->gr_name, gnamelen)))
+        break;
+    }
+
+  if (grent == 0)
+    {
+      endgrent ();
+      return ((char *)NULL);
+    }
+
+  value = savestring (grent->gr_name);
+  return (value);
+#endif
+}
+
+/* Functions to perform history and alias expansions on the current line. */
+
+#if defined (BANG_HISTORY)
+/* Perform history expansion on the current line.  If no history expansion
+   is done, pre_process_line() returns what it was passed, so we need to
+   allocate a new line here. */
+static char *
+history_expand_line_internal (line)
+     char *line;
+{
+  char *new_line;
+  int old_verify;
+
+  old_verify = hist_verify;
+  hist_verify = 0;
+  new_line = pre_process_line (line, 0, 0);
+  hist_verify = old_verify;
+
+  return (new_line == line) ? savestring (line) : new_line;
+}
+#endif
+
+/* There was an error in expansion.  Let the preprocessor print
+   the error here. */
+static void
+cleanup_expansion_error ()
+{
+  char *to_free;
+#if defined (BANG_HISTORY)
+  int old_verify;
+
+  old_verify = hist_verify;
+  hist_verify = 0;
+#endif
+
+  fprintf (rl_outstream, "\r\n");
+  to_free = pre_process_line (rl_line_buffer, 1, 0);
+#if defined (BANG_HISTORY)
+  hist_verify = old_verify;
+#endif
+  if (to_free != rl_line_buffer)
+    FREE (to_free);
+  putc ('\r', rl_outstream);
+  rl_forced_update_display ();
+}
+
+/* If NEW_LINE differs from what is in the readline line buffer, add an
+   undo record to get from the readline line buffer contents to the new
+   line and make NEW_LINE the current readline line. */
+static void
+maybe_make_readline_line (new_line)
+     char *new_line;
+{
+  if (strcmp (new_line, rl_line_buffer) != 0)
+    {
+      rl_point = rl_end;
+
+      rl_add_undo (UNDO_BEGIN, 0, 0, 0);
+      rl_delete_text (0, rl_point);
+      rl_point = rl_end = rl_mark = 0;
+      rl_insert_text (new_line);
+      rl_add_undo (UNDO_END, 0, 0, 0);
+    }
+}
+
+/* Make NEW_LINE be the current readline line.  This frees NEW_LINE. */
+static void
+set_up_new_line (new_line)
+     char *new_line;
+{
+  int old_point, at_end;
+
+  old_point = rl_point;
+  at_end = rl_point == rl_end;
+
+  /* If the line was history and alias expanded, then make that
+     be one thing to undo. */
+  maybe_make_readline_line (new_line);
+  free (new_line);
+
+  /* Place rl_point where we think it should go. */
+  if (at_end)
+    rl_point = rl_end;
+  else if (old_point < rl_end)
+    {
+      rl_point = old_point;
+      if (!whitespace (rl_line_buffer[rl_point]))
+       rl_forward_word (1, 0);
+    }
+}
+
+#if defined (ALIAS)
+/* Expand aliases in the current readline line. */
+static int
+alias_expand_line (count, ignore)
+     int count, ignore;
+{
+  char *new_line;
+
+  new_line = alias_expand (rl_line_buffer);
+
+  if (new_line)
+    {
+      set_up_new_line (new_line);
+      return (0);
+    }
+  else
+    {
+      cleanup_expansion_error ();
+      return (1);
+    }
+}
+#endif
+
+#if defined (BANG_HISTORY)
+/* History expand the line. */
+static int
+history_expand_line (count, ignore)
+     int count, ignore;
+{
+  char *new_line;
+
+  new_line = history_expand_line_internal (rl_line_buffer);
+
+  if (new_line)
+    {
+      set_up_new_line (new_line);
+      return (0);
+    }
+  else
+    {
+      cleanup_expansion_error ();
+      return (1);
+    }
+}
+
+/* Expand history substitutions in the current line and then insert a
+   space (hopefully close to where we were before). */
+static int
+tcsh_magic_space (count, ignore)
+     int count, ignore;
+{
+  int dist_from_end, old_point;
+
+  old_point = rl_point;
+  dist_from_end = rl_end - rl_point;
+  if (history_expand_line (count, ignore) == 0)
+    {
+      /* Try a simple heuristic from Stephen Gildea <gildea@intouchsys.com>.
+        This works if all expansions were before rl_point or if no expansions
+        were performed. */
+      rl_point = (old_point == 0) ? old_point : rl_end - dist_from_end;
+      rl_insert (1, ' ');
+      return (0);
+    }
+  else
+    return (1);
+}
+#endif /* BANG_HISTORY */
+
+/* History and alias expand the line. */
+static int
+history_and_alias_expand_line (count, ignore)
+     int count, ignore;
+{
+  char *new_line;
+
+  new_line = 0;
+#if defined (BANG_HISTORY)
+  new_line = history_expand_line_internal (rl_line_buffer);
+#endif
+
+#if defined (ALIAS)
+  if (new_line)
+    {
+      char *alias_line;
+
+      alias_line = alias_expand (new_line);
+      free (new_line);
+      new_line = alias_line;
+    }
+#endif /* ALIAS */
+
+  if (new_line)
+    {
+      set_up_new_line (new_line);
+      return (0);
+    }
+  else
+    {
+      cleanup_expansion_error ();
+      return (1);
+    }
+}
+
+/* History and alias expand the line, then perform the shell word
+   expansions by calling expand_string.  This can't use set_up_new_line()
+   because we want the variable expansions as a separate undo'able
+   set of operations. */
+static int
+shell_expand_line (count, ignore)
+     int count, ignore;
+{
+  char *new_line;
+  WORD_LIST *expanded_string;
+
+  new_line = 0;
+#if defined (BANG_HISTORY)
+  new_line = history_expand_line_internal (rl_line_buffer);
+#endif
+
+#if defined (ALIAS)
+  if (new_line)
+    {
+      char *alias_line;
+
+      alias_line = alias_expand (new_line);
+      free (new_line);
+      new_line = alias_line;
+    }
+#endif /* ALIAS */
+
+  if (new_line)
+    {
+      int old_point = rl_point;
+      int at_end = rl_point == rl_end;
+
+      /* If the line was history and alias expanded, then make that
+        be one thing to undo. */
+      maybe_make_readline_line (new_line);
+      free (new_line);
+
+      /* If there is variable expansion to perform, do that as a separate
+        operation to be undone. */
+      new_line = savestring (rl_line_buffer);
+      expanded_string = expand_string (new_line, 0);
+      FREE (new_line);
+      if (expanded_string == 0)
+       {
+         new_line = (char *)xmalloc (1);
+         new_line[0] = '\0';
+       }
+      else
+       {
+         new_line = string_list (expanded_string);
+         dispose_words (expanded_string);
+       }
+
+      maybe_make_readline_line (new_line);
+      free (new_line);
+
+      /* Place rl_point where we think it should go. */
+      if (at_end)
+       rl_point = rl_end;
+      else if (old_point < rl_end)
+       {
+         rl_point = old_point;
+         if (!whitespace (rl_line_buffer[rl_point]))
+           rl_forward_word (1, 0);
+       }
+      return 0;
+    }
+  else
+    {
+      cleanup_expansion_error ();
+      return 1;
+    }
+}
+
+/* If FIGNORE is set, then don't match files with the given suffixes when
+   completing filenames.  If only one of the possibilities has an acceptable
+   suffix, delete the others, else just return and let the completer
+   signal an error.  It is called by the completer when real
+   completions are done on filenames by the completer's internal
+   function, not for completion lists (M-?) and not on "other"
+   completion types, such as hostnames or commands. */
+
+static struct ignorevar fignore =
+{
+  "FIGNORE",
+  (struct ign *)0,
+  0,
+  (char *)0,
+  (sh_iv_item_func_t *) 0,
+};
+
+static void
+_ignore_completion_names (names, name_func)
+     char **names;
+     sh_ignore_func_t *name_func;
+{
+  char **newnames;
+  int idx, nidx;
+  char **oldnames;
+  int oidx;
+
+  /* If there is only one completion, see if it is acceptable.  If it is
+     not, free it up.  In any case, short-circuit and return.  This is a
+     special case because names[0] is not the prefix of the list of names
+     if there is only one completion; it is the completion itself. */
+  if (names[1] == (char *)0)
+    {
+      if (force_fignore)
+       if ((*name_func) (names[0]) == 0)
+         {
+           free (names[0]);
+           names[0] = (char *)NULL;
+         }
+
+      return;
+    }
+
+  /* Allocate space for array to hold list of pointers to matching
+     filenames.  The pointers are copied back to NAMES when done. */
+  for (nidx = 1; names[nidx]; nidx++)
+    ;
+  newnames = strvec_create (nidx + 1);
+
+  if (force_fignore == 0)
+    {
+      oldnames = strvec_create (nidx - 1);
+      oidx = 0;
+    }
+
+  newnames[0] = names[0];
+  for (idx = nidx = 1; names[idx]; idx++)
+    {
+      if ((*name_func) (names[idx]))
+       newnames[nidx++] = names[idx];
+      else if (force_fignore == 0)
+       oldnames[oidx++] = names[idx];
+      else
+       free (names[idx]);
+    }
+
+  newnames[nidx] = (char *)NULL;
+
+  /* If none are acceptable then let the completer handle it. */
+  if (nidx == 1)
+    {
+      if (force_fignore)
+       {
+         free (names[0]);
+         names[0] = (char *)NULL;
+       }
+      else
+       free (oldnames);
+
+      free (newnames);
+      return;
+    }
+
+  if (force_fignore == 0)
+    {
+      while (oidx)
+       free (oldnames[--oidx]);
+      free (oldnames);
+    }
+
+  /* If only one is acceptable, copy it to names[0] and return. */
+  if (nidx == 2)
+    {
+      free (names[0]);
+      names[0] = newnames[1];
+      names[1] = (char *)NULL;
+      free (newnames);
+      return;
+    }
+
+  /* Copy the acceptable names back to NAMES, set the new array end,
+     and return. */
+  for (nidx = 1; newnames[nidx]; nidx++)
+    names[nidx] = newnames[nidx];
+  names[nidx] = (char *)NULL;
+  free (newnames);
+}
+
+static int
+name_is_acceptable (name)
+     const char *name;
+{
+  struct ign *p;
+  int nlen;
+
+  for (nlen = strlen (name), p = fignore.ignores; p->val; p++)
+    {
+      if (nlen > p->len && p->len > 0 && STREQ (p->val, &name[nlen - p->len]))
+       return (0);
+    }
+
+  return (1);
+}
+
+#if 0
+static int
+ignore_dot_names (name)
+     char *name;
+{
+  return (name[0] != '.');
+}
+#endif
+
+static int
+filename_completion_ignore (names)
+     char **names;
+{
+#if 0
+  if (glob_dot_filenames == 0)
+    _ignore_completion_names (names, ignore_dot_names);
+#endif
+
+  setup_ignore_patterns (&fignore);
+
+  if (fignore.num_ignores == 0)
+    return 0;
+
+  _ignore_completion_names (names, name_is_acceptable);
+
+  return 0;
+}
+
+/* Return 1 if NAME is a directory.  NAME undergoes tilde expansion. */
+static int
+test_for_directory (name)
+     const char *name;
+{
+  char *fn;
+  int r;
+
+  fn = bash_tilde_expand (name, 0);
+  r = file_isdir (fn);
+  free (fn);
+
+  return (r);
+}
+
+/* Remove files from NAMES, leaving directories. */
+static int
+bash_ignore_filenames (names)
+     char **names;
+{
+  _ignore_completion_names (names, test_for_directory);
+  return 0;
+}
+
+static int
+return_zero (name)
+     const char *name;
+{
+  return 0;
+}
+
+static int
+bash_ignore_everything (names)
+     char **names;
+{
+  _ignore_completion_names (names, return_zero);
+  return 0;
+}
+
+/* Replace a tilde-prefix in VAL with a `~', assuming the user typed it.  VAL
+   is an expanded filename.  DIRECTORY_PART is the tilde-prefix portion
+   of the un-tilde-expanded version of VAL (what the user typed). */
+static char *
+restore_tilde (val, directory_part)
+     char *val, *directory_part;
+{
+  int l, vl, dl2, xl;
+  char *dh2, *expdir, *ret;
+
+  vl = strlen (val);
+
+  /* We need to duplicate the expansions readline performs on the directory
+     portion before passing it to our completion function. */
+  dh2 = directory_part ? bash_dequote_filename (directory_part, 0) : 0;
+  bash_directory_expansion (&dh2);
+  dl2 = strlen (dh2);
+
+  expdir = bash_tilde_expand (directory_part, 0);
+  xl = strlen (expdir);
+  free (expdir);
+
+  /*
+     dh2 = unexpanded but dequoted tilde-prefix
+     dl2 = length of tilde-prefix
+     expdir = tilde-expanded tilde-prefix
+     xl = length of expanded tilde-prefix
+     l = length of remainder after tilde-prefix
+  */
+  l = (vl - xl) + 1;
+
+  ret = (char *)xmalloc (dl2 + 2 + l);
+  strcpy (ret, dh2);
+  strcpy (ret + dl2, val + xl);
+
+  free (dh2);
+  return (ret);
+}
+
+/* Simulate the expansions that will be performed by
+   rl_filename_completion_function.  This must be called with the address of
+   a pointer to malloc'd memory. */
+static void
+bash_directory_expansion (dirname)
+     char **dirname;
+{
+  char *d, *nd;
+
+  d = savestring (*dirname);
+
+  if ((rl_directory_rewrite_hook) && (*rl_directory_rewrite_hook) (&d))
+    {
+      free (*dirname);
+      *dirname = d;
+    }
+  else if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&d))
+    {
+      free (*dirname);
+      *dirname = d;
+    }
+  else if (rl_completion_found_quote)
+    {
+      nd = bash_dequote_filename (d, rl_completion_quote_character);
+      free (*dirname);
+      free (d);
+      *dirname = nd;
+    }
+}
+
+/* If necessary, rewrite directory entry */
+static char *
+bash_filename_rewrite_hook (fname, fnlen)
+     char *fname;
+     int fnlen;
+{
+  char *conv;
+
+  conv = fnx_fromfs (fname, fnlen);
+  if (conv != fname)
+    conv = savestring (conv);
+  return conv;
+}
+
+/* Functions to save and restore the appropriate directory hook */
+/* This is not static so the shopt code can call it */
+void
+set_directory_hook ()
+{
+  if (dircomplete_expand)
+    {
+      rl_directory_completion_hook = bash_directory_completion_hook;
+      rl_directory_rewrite_hook = (rl_icppfunc_t *)0;
+    }
+  else
+    {
+      rl_directory_rewrite_hook = bash_directory_completion_hook;
+      rl_directory_completion_hook = (rl_icppfunc_t *)0;
+    }
+}
+
+static rl_icppfunc_t *
+save_directory_hook ()
+{
+  rl_icppfunc_t *ret;
+
+  if (dircomplete_expand)
+    {
+      ret = rl_directory_completion_hook;
+      rl_directory_completion_hook = (rl_icppfunc_t *)NULL;
+    }
+  else
+    {
+      ret = rl_directory_rewrite_hook;
+      rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
+    }
+
+  return ret;
+}
+
+static void
+restore_directory_hook (hookf)
+     rl_icppfunc_t *hookf;
+{
+  if (dircomplete_expand)
+    rl_directory_completion_hook = hookf;
+  else
+    rl_directory_rewrite_hook = hookf;
+}
+
+/* Expand a filename before the readline completion code passes it to stat(2).
+   The filename will already have had tilde expansion performed. */
+static int
+bash_filename_stat_hook (dirname)
+     char **dirname;
+{
+  char *local_dirname, *new_dirname, *t;
+  int should_expand_dirname, return_value;
+  WORD_LIST *wl;
+  struct stat sb;
+
+  local_dirname = *dirname;
+  should_expand_dirname = return_value = 0;
+  if (t = mbschr (local_dirname, '$'))
+    should_expand_dirname = '$';
+  else if (t = mbschr (local_dirname, '`'))    /* XXX */
+    should_expand_dirname = '`';
+
+#if defined (HAVE_LSTAT)
+  if (should_expand_dirname && lstat (local_dirname, &sb) == 0)
+#else
+  if (should_expand_dirname && stat (local_dirname, &sb) == 0)
+#endif
+    should_expand_dirname = 0;
+  
+  if (should_expand_dirname)  
+    {
+      new_dirname = savestring (local_dirname);
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB);  /* does the right thing */
+      if (wl)
+       {
+         free (new_dirname);
+         new_dirname = string_list (wl);
+         /* Tell the completer we actually expanded something and change
+            *dirname only if we expanded to something non-null -- stat
+            behaves unpredictably when passed null or empty strings */
+         if (new_dirname && *new_dirname)
+           {
+             free (local_dirname);     /* XXX */
+             local_dirname = *dirname = new_dirname;
+             return_value = STREQ (local_dirname, *dirname) == 0;
+           }
+         else
+           free (new_dirname);
+         dispose_words (wl);
+       }
+      else
+       free (new_dirname);
+    }  
+
+  /* This is very similar to the code in bash_directory_completion_hook below,
+     but without spelling correction and not worrying about whether or not
+     we change relative pathnames. */
+  if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
+    {
+      char *temp1, *temp2;
+
+      t = get_working_directory ("symlink-hook");
+      temp1 = make_absolute (local_dirname, t);
+      free (t);
+      temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
+
+      /* If we can't canonicalize, bail. */
+      if (temp2 == 0)
+       {
+         free (temp1);
+         return return_value;
+       }
+
+      free (local_dirname);
+      *dirname = temp2;
+      free (temp1);
+    }
+
+  return (return_value);
+}
+
+/* Handle symbolic link references and other directory name
+   expansions while hacking completion.  This should return 1 if it modifies
+   the DIRNAME argument, 0 otherwise.  It should make sure not to modify
+   DIRNAME if it returns 0. */
+static int
+bash_directory_completion_hook (dirname)
+     char **dirname;
+{
+  char *local_dirname, *new_dirname, *t;
+  int return_value, should_expand_dirname, nextch, closer;
+  WORD_LIST *wl;
+  struct stat sb;
+
+  return_value = should_expand_dirname = nextch = closer = 0;
+  local_dirname = *dirname;
+
+  if (t = mbschr (local_dirname, '$'))
+    {
+      should_expand_dirname = '$';
+      nextch = t[1];
+      /* Deliberately does not handle the deprecated $[...] arithmetic
+        expansion syntax */
+      if (nextch == '(')
+       closer = ')';
+      else if (nextch == '{')
+       closer = '}';
+      else
+       nextch = 0;
+    }
+  else if (local_dirname[0] == '~')
+    should_expand_dirname = '~';
+  else
+    {
+      t = mbschr (local_dirname, '`');
+      if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0)
+       should_expand_dirname = '`';
+    }
+
+#if defined (HAVE_LSTAT)
+  if (should_expand_dirname && lstat (local_dirname, &sb) == 0)
+#else
+  if (should_expand_dirname && stat (local_dirname, &sb) == 0)
+#endif
+    should_expand_dirname = 0;
+
+  if (should_expand_dirname)  
+    {
+      new_dirname = savestring (local_dirname);
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB);  /* does the right thing */
+      if (wl)
+       {
+         *dirname = string_list (wl);
+         /* Tell the completer to replace the directory name only if we
+            actually expanded something. */
+         return_value = STREQ (local_dirname, *dirname) == 0;
+         free (local_dirname);
+         free (new_dirname);
+         dispose_words (wl);
+         local_dirname = *dirname;
+         /* XXX - change rl_filename_quote_characters here based on
+            should_expand_dirname/nextch/closer.  This is the only place
+            custom_filename_quote_characters is modified. */
+         if (rl_filename_quote_characters && *rl_filename_quote_characters)
+           {
+             int i, j, c;
+             i = strlen (default_filename_quote_characters);
+             custom_filename_quote_characters = xrealloc (custom_filename_quote_characters, i+1);
+             for (i = j = 0; c = default_filename_quote_characters[i]; i++)
+               {
+                 if (c == should_expand_dirname || c == nextch || c == closer)
+                   continue;
+                 custom_filename_quote_characters[j++] = c;
+               }
+             custom_filename_quote_characters[j] = '\0';
+             rl_filename_quote_characters = custom_filename_quote_characters;
+             set_filename_bstab (rl_filename_quote_characters);
+           }
+       }
+      else
+       {
+         free (new_dirname);
+         free (local_dirname);
+         *dirname = (char *)xmalloc (1);
+         **dirname = '\0';
+         return 1;
+       }
+    }
+  else 
+    {
+      /* Dequote the filename even if we don't expand it. */
+      new_dirname = bash_dequote_filename (local_dirname, rl_completion_quote_character);
+      return_value = STREQ (local_dirname, new_dirname) == 0;
+      free (local_dirname);
+      local_dirname = *dirname = new_dirname;
+    }
+
+  /* no_symbolic_links == 0 -> use (default) logical view of the file system.
+     local_dirname[0] == '.' && local_dirname[1] == '/' means files in the
+     current directory (./).
+     local_dirname[0] == '.' && local_dirname[1] == 0 means relative pathnames
+     in the current directory (e.g., lib/sh).
+     XXX - should we do spelling correction on these? */
+
+  /* This is test as it was in bash-4.2: skip relative pathnames in current
+     directory.  Change test to
+      (local_dirname[0] != '.' || (local_dirname[1] && local_dirname[1] != '/'))
+     if we want to skip paths beginning with ./ also. */
+  if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
+    {
+      char *temp1, *temp2;
+      int len1, len2;
+
+      /* If we have a relative path
+               (local_dirname[0] != '/' && local_dirname[0] != '.')
+        that is canonical after appending it to the current directory, then
+               temp1 = temp2+'/'
+        That is,
+               strcmp (temp1, temp2) == 0
+        after adding a slash to temp2 below.  It should be safe to not
+        change those.
+      */
+      t = get_working_directory ("symlink-hook");
+      temp1 = make_absolute (local_dirname, t);
+      free (t);
+      temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
+
+      /* Try spelling correction if initial canonicalization fails.  Make
+        sure we are set to replace the directory name with the results so
+        subsequent directory checks don't fail. */
+      if (temp2 == 0 && dircomplete_spelling && dircomplete_expand)
+       {
+         temp2 = dirspell (temp1);
+         if (temp2)
+           {
+             free (temp1);
+             temp1 = temp2;
+             temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
+             return_value |= temp2 != 0;
+           }
+       }
+      /* If we can't canonicalize, bail. */
+      if (temp2 == 0)
+       {
+         free (temp1);
+         return return_value;
+       }
+      len1 = strlen (temp1);
+      if (temp1[len1 - 1] == '/')
+       {
+         len2 = strlen (temp2);
+         if (len2 > 2)         /* don't append `/' to `/' or `//' */
+           {
+             temp2 = (char *)xrealloc (temp2, len2 + 2);
+             temp2[len2] = '/';
+             temp2[len2 + 1] = '\0';
+           }
+       }
+
+      /* dircomplete_expand_relpath == 0 means we want to leave relative
+        pathnames that are unchanged by canonicalization alone.
+        *local_dirname != '/' && *local_dirname != '.' == relative pathname
+        (consistent with general.c:absolute_pathname())
+        temp1 == temp2 (after appending a slash to temp2) means the pathname
+        is not changed by canonicalization as described above. */
+      if (dircomplete_expand_relpath || ((local_dirname[0] != '/' && local_dirname[0] != '.') && STREQ (temp1, temp2) == 0))
+       return_value |= STREQ (local_dirname, temp2) == 0;
+      free (local_dirname);
+      *dirname = temp2;
+      free (temp1);
+    }
+
+  return (return_value);
+}
+
+static char **history_completion_array = (char **)NULL;
+static int harry_size;
+static int harry_len;
+
+static void
+build_history_completion_array ()
+{
+  register int i, j;
+  HIST_ENTRY **hlist;
+  char **tokens;
+
+  /* First, clear out the current dynamic history completion list. */
+  if (harry_size)
+    {
+      strvec_dispose (history_completion_array);
+      history_completion_array = (char **)NULL;
+      harry_size = 0;
+      harry_len = 0;
+    }
+
+  /* Next, grovel each line of history, making each shell-sized token
+     a separate entry in the history_completion_array. */
+  hlist = history_list ();
+
+  if (hlist)
+    {
+      for (i = 0; hlist[i]; i++)
+       ;
+      for ( --i; i >= 0; i--)
+       {
+         /* Separate each token, and place into an array. */
+         tokens = history_tokenize (hlist[i]->line);
+
+         for (j = 0; tokens && tokens[j]; j++)
+           {
+             if (harry_len + 2 > harry_size)
+               history_completion_array = strvec_resize (history_completion_array, harry_size += 10);
+
+             history_completion_array[harry_len++] = tokens[j];
+             history_completion_array[harry_len] = (char *)NULL;
+           }
+         free (tokens);
+       }
+
+      /* Sort the complete list of tokens. */
+      if (dabbrev_expand_active == 0)
+        qsort (history_completion_array, harry_len, sizeof (char *), (QSFUNC *)strvec_strcmp);
+    }
+}
+
+static char *
+history_completion_generator (hint_text, state)
+     const char *hint_text;
+     int state;
+{
+  static int local_index, len;
+  static const char *text;
+
+  /* If this is the first call to the generator, then initialize the
+     list of strings to complete over. */
+  if (state == 0)
+    {
+      if (dabbrev_expand_active)       /* This is kind of messy */
+       rl_completion_suppress_append = 1;
+      local_index = 0;
+      build_history_completion_array ();
+      text = hint_text;
+      len = strlen (text);
+    }
+
+  while (history_completion_array && history_completion_array[local_index])
+    {
+      if (strncmp (text, history_completion_array[local_index++], len) == 0)
+       return (savestring (history_completion_array[local_index - 1]));
+    }
+  return ((char *)NULL);
+}
+
+static int
+dynamic_complete_history (count, key)
+     int count, key;
+{
+  int r;
+  rl_compentry_func_t *orig_func;
+  rl_completion_func_t *orig_attempt_func;
+  rl_compignore_func_t *orig_ignore_func;
+
+  orig_func = rl_completion_entry_function;
+  orig_attempt_func = rl_attempted_completion_function;
+  orig_ignore_func = rl_ignore_some_completions_function;
+
+  rl_completion_entry_function = history_completion_generator;
+  rl_attempted_completion_function = (rl_completion_func_t *)NULL;
+  rl_ignore_some_completions_function = filename_completion_ignore;
+
+  /* XXX - use rl_completion_mode here? */
+  if (rl_last_func == dynamic_complete_history)
+    r = rl_complete_internal ('?');
+  else
+    r = rl_complete_internal (TAB);
+
+  rl_completion_entry_function = orig_func;
+  rl_attempted_completion_function = orig_attempt_func;
+  rl_ignore_some_completions_function = orig_ignore_func;
+
+  return r;
+}
+
+static int
+bash_dabbrev_expand (count, key)
+     int count, key;
+{
+  int r, orig_suppress, orig_sort;
+  rl_compentry_func_t *orig_func;
+  rl_completion_func_t *orig_attempt_func;
+  rl_compignore_func_t *orig_ignore_func;
+
+  orig_func = rl_menu_completion_entry_function;
+  orig_attempt_func = rl_attempted_completion_function;
+  orig_ignore_func = rl_ignore_some_completions_function;
+  orig_suppress = rl_completion_suppress_append;
+  orig_sort = rl_sort_completion_matches;
+
+  rl_menu_completion_entry_function = history_completion_generator;
+  rl_attempted_completion_function = (rl_completion_func_t *)NULL;
+  rl_ignore_some_completions_function = filename_completion_ignore;
+  rl_filename_completion_desired = 0;
+  rl_completion_suppress_append = 1;
+  rl_sort_completion_matches = 0;
+
+  /* XXX - use rl_completion_mode here? */
+  dabbrev_expand_active = 1;
+  if (rl_last_func == bash_dabbrev_expand)
+    rl_last_func = rl_menu_complete;
+  r = rl_menu_complete (count, key);
+  dabbrev_expand_active = 0;
+
+  rl_last_func = bash_dabbrev_expand;
+  rl_menu_completion_entry_function = orig_func;
+  rl_attempted_completion_function = orig_attempt_func;
+  rl_ignore_some_completions_function = orig_ignore_func;
+  rl_completion_suppress_append = orig_suppress;
+  rl_sort_completion_matches = orig_sort;
+
+  return r;
+}
+
+#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
+static int
+bash_complete_username (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_username_internal (rl_completion_mode (bash_complete_username));
+}
+
+static int
+bash_possible_username_completions (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_username_internal ('?');
+}
+
+static int
+bash_complete_username_internal (what_to_do)
+     int what_to_do;
+{
+  return bash_specific_completion (what_to_do, rl_username_completion_function);
+}
+
+static int
+bash_complete_filename (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_filename_internal (rl_completion_mode (bash_complete_filename));
+}
+
+static int
+bash_possible_filename_completions (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_filename_internal ('?');
+}
+
+static int
+bash_complete_filename_internal (what_to_do)
+     int what_to_do;
+{
+  rl_compentry_func_t *orig_func;
+  rl_completion_func_t *orig_attempt_func;
+  rl_icppfunc_t *orig_dir_func;
+  rl_compignore_func_t *orig_ignore_func;
+  /*const*/ char *orig_rl_completer_word_break_characters;
+  int r;
+
+  orig_func = rl_completion_entry_function;
+  orig_attempt_func = rl_attempted_completion_function;
+  orig_ignore_func = rl_ignore_some_completions_function;
+  orig_rl_completer_word_break_characters = rl_completer_word_break_characters;
+
+  orig_dir_func = save_directory_hook ();
+
+  rl_completion_entry_function = rl_filename_completion_function;
+  rl_attempted_completion_function = (rl_completion_func_t *)NULL;
+  rl_ignore_some_completions_function = filename_completion_ignore;
+  rl_completer_word_break_characters = " \t\n\"\'";
+
+  r = rl_complete_internal (what_to_do);
+
+  rl_completion_entry_function = orig_func;
+  rl_attempted_completion_function = orig_attempt_func;
+  rl_ignore_some_completions_function = orig_ignore_func;
+  rl_completer_word_break_characters = orig_rl_completer_word_break_characters;
+
+  restore_directory_hook (orig_dir_func);
+
+  return r;
+}
+
+static int
+bash_complete_hostname (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_hostname_internal (rl_completion_mode (bash_complete_hostname));
+}
+
+static int
+bash_possible_hostname_completions (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_hostname_internal ('?');
+}
+
+static int
+bash_complete_variable (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_variable_internal (rl_completion_mode (bash_complete_variable));
+}
+
+static int
+bash_possible_variable_completions (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_variable_internal ('?');
+}
+
+static int
+bash_complete_command (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_command_internal (rl_completion_mode (bash_complete_command));
+}
+
+static int
+bash_possible_command_completions (ignore, ignore2)
+     int ignore, ignore2;
+{
+  return bash_complete_command_internal ('?');
+}
+
+static int
+bash_complete_hostname_internal (what_to_do)
+     int what_to_do;
+{
+  return bash_specific_completion (what_to_do, hostname_completion_function);
+}
+
+static int
+bash_complete_variable_internal (what_to_do)
+     int what_to_do;
+{
+  return bash_specific_completion (what_to_do, variable_completion_function);
+}
+
+static int
+bash_complete_command_internal (what_to_do)
+     int what_to_do;
+{
+  return bash_specific_completion (what_to_do, command_word_completion_function);
+}
+
+static char *globtext;
+static char *globorig;
+
+static char *
+glob_complete_word (text, state)
+     const char *text;
+     int state;
+{
+  static char **matches = (char **)NULL;
+  static int ind;
+  int glen;
+  char *ret, *ttext;
+
+  if (state == 0)
+    {
+      rl_filename_completion_desired = 1;
+      FREE (matches);
+      if (globorig != globtext)
+       FREE (globorig);
+      FREE (globtext);
+
+      ttext = bash_tilde_expand (text, 0);
+
+      if (rl_explicit_arg)
+       {
+         globorig = savestring (ttext);
+         glen = strlen (ttext);
+         globtext = (char *)xmalloc (glen + 2);
+         strcpy (globtext, ttext);
+         globtext[glen] = '*';
+         globtext[glen+1] = '\0';
+       }
+      else
+        globtext = globorig = savestring (ttext);
+
+      if (ttext != text)
+       free (ttext);
+
+      matches = shell_glob_filename (globtext);
+      if (GLOB_FAILED (matches))
+       matches = (char **)NULL;
+      ind = 0;
+    }
+
+  ret = matches ? matches[ind] : (char *)NULL;
+  ind++;
+  return ret;
+}
+
+static int
+bash_glob_completion_internal (what_to_do)
+     int what_to_do;
+{
+  return bash_specific_completion (what_to_do, glob_complete_word);
+}
+
+/* A special quoting function so we don't end up quoting globbing characters
+   in the word if there are no matches or multiple matches. */
+static char *
+bash_glob_quote_filename (s, rtype, qcp)
+     char *s;
+     int rtype;
+     char *qcp;
+{
+  if (globorig && qcp && *qcp == '\0' && STREQ (s, globorig))
+    return (savestring (s));
+  else
+    return (bash_quote_filename (s, rtype, qcp));
+}
+
+static int
+bash_glob_complete_word (count, key)
+     int count, key;
+{
+  int r;
+  rl_quote_func_t *orig_quoting_function;
+
+  if (rl_editing_mode == EMACS_EDITING_MODE)
+    rl_explicit_arg = 1;       /* force `*' append */
+  orig_quoting_function = rl_filename_quoting_function;
+  rl_filename_quoting_function = bash_glob_quote_filename;
+  
+  r = bash_glob_completion_internal (rl_completion_mode (bash_glob_complete_word));
+
+  rl_filename_quoting_function = orig_quoting_function;
+  return r;
+}
+
+static int
+bash_glob_expand_word (count, key)
+     int count, key;
+{
+  return bash_glob_completion_internal ('*');
+}
+
+static int
+bash_glob_list_expansions (count, key)
+     int count, key;
+{
+  return bash_glob_completion_internal ('?');
+}
+
+static int
+bash_specific_completion (what_to_do, generator)
+     int what_to_do;
+     rl_compentry_func_t *generator;
+{
+  rl_compentry_func_t *orig_func;
+  rl_completion_func_t *orig_attempt_func;
+  rl_compignore_func_t *orig_ignore_func;
+  int r;
+
+  orig_func = rl_completion_entry_function;
+  orig_attempt_func = rl_attempted_completion_function;
+  orig_ignore_func = rl_ignore_some_completions_function;
+  rl_completion_entry_function = generator;
+  rl_attempted_completion_function = NULL;
+  rl_ignore_some_completions_function = orig_ignore_func;
+
+  r = rl_complete_internal (what_to_do);
+
+  rl_completion_entry_function = orig_func;
+  rl_attempted_completion_function = orig_attempt_func;
+  rl_ignore_some_completions_function = orig_ignore_func;
+
+  return r;
+}
+
+#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
+
+#if defined (VI_MODE)
+/* Completion, from vi mode's point of view.  This is a modified version of
+   rl_vi_complete which uses the bash globbing code to implement what POSIX
+   specifies, which is to append a `*' and attempt filename generation (which
+   has the side effect of expanding any globbing characters in the word). */
+static int
+bash_vi_complete (count, key)
+     int count, key;
+{
+#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
+  int p, r;
+  char *t;
+
+  if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
+    {
+      if (!whitespace (rl_line_buffer[rl_point + 1]))
+       rl_vi_end_word (1, 'E');
+      rl_point++;
+    }
+
+  /* Find boundaries of current word, according to vi definition of a
+     `bigword'. */
+  t = 0;
+  if (rl_point > 0)
+    {
+      p = rl_point;
+      rl_vi_bWord (1, 'B');
+      r = rl_point;
+      rl_point = p;
+      p = r;
+
+      t = substring (rl_line_buffer, p, rl_point);
+    }      
+
+  if (t && glob_pattern_p (t) == 0)
+    rl_explicit_arg = 1;       /* XXX - force glob_complete_word to append `*' */
+  FREE (t);
+
+  if (key == '*')      /* Expansion and replacement. */
+    r = bash_glob_expand_word (count, key);
+  else if (key == '=') /* List possible completions. */
+    r = bash_glob_list_expansions (count, key);
+  else if (key == '\\')        /* Standard completion */
+    r = bash_glob_complete_word (count, key);
+  else
+    r = rl_complete (0, key);
+
+  if (key == '*' || key == '\\')
+    rl_vi_start_inserting (key, 1, 1);
+
+  return (r);
+#else
+  return rl_vi_complete (count, key);
+#endif /* !SPECIFIC_COMPLETION_FUNCTIONS */
+}
+#endif /* VI_MODE */
+
+/* Filename quoting for completion. */
+/* A function to strip unquoted quote characters (single quotes, double
+   quotes, and backslashes).  It allows single quotes to appear
+   within double quotes, and vice versa.  It should be smarter. */
+static char *
+bash_dequote_filename (text, quote_char)
+     char *text;
+     int quote_char;
+{
+  char *ret, *p, *r;
+  int l, quoted;
+
+  l = strlen (text);
+  ret = (char *)xmalloc (l + 1);
+  for (quoted = quote_char, p = text, r = ret; p && *p; p++)
+    {
+      /* Allow backslash-escaped characters to pass through unscathed. */
+      if (*p == '\\')
+       {
+         /* Backslashes are preserved within single quotes. */
+         if (quoted == '\'')
+           *r++ = *p;
+         /* Backslashes are preserved within double quotes unless the
+            character is one that is defined to be escaped */
+         else if (quoted == '"' && ((sh_syntaxtab[p[1]] & CBSDQUOTE) == 0))
+           *r++ = *p;
+
+         *r++ = *++p;
+         if (*p == '\0')
+           return ret;         /* XXX - was break; */
+         continue;
+       }
+      /* Close quote. */
+      if (quoted && *p == quoted)
+       {
+         quoted = 0;
+         continue;
+       }
+      /* Open quote. */
+      if (quoted == 0 && (*p == '\'' || *p == '"'))
+       {
+         quoted = *p;
+         continue;
+       }
+      *r++ = *p;
+    }
+  *r = '\0';
+  return ret;
+}
+
+/* Quote characters that the readline completion code would treat as
+   word break characters with backslashes.  Pass backslash-quoted
+   characters through without examination. */
+static char *
+quote_word_break_chars (text)
+     char *text;
+{
+  char *ret, *r, *s;
+  int l;
+
+  l = strlen (text);
+  ret = (char *)xmalloc ((2 * l) + 1);
+  for (s = text, r = ret; *s; s++)
+    {
+      /* Pass backslash-quoted characters through, including the backslash. */
+      if (*s == '\\')
+       {
+         *r++ = '\\';
+         *r++ = *++s;
+         if (*s == '\0')
+           break;
+         continue;
+       }
+      /* OK, we have an unquoted character.  Check its presence in
+        rl_completer_word_break_characters. */
+      if (mbschr (rl_completer_word_break_characters, *s))
+       *r++ = '\\';
+      /* XXX -- check for standalone tildes here and backslash-quote them */
+      if (s == text && *s == '~' && file_exists (text))
+        *r++ = '\\';
+      *r++ = *s;
+    }
+  *r = '\0';
+  return ret;
+}
+
+/* Use characters in STRING to populate the table of characters that should
+   be backslash-quoted.  The table will be used for sh_backslash_quote from
+   this file. */
+static void
+set_filename_bstab (string)
+     const char *string;
+{
+  const char *s;
+
+  memset (filename_bstab, 0, sizeof (filename_bstab));
+  for (s = string; s && *s; s++)
+    filename_bstab[*s] = 1;
+}
+
+/* Quote a filename using double quotes, single quotes, or backslashes
+   depending on the value of completion_quoting_style.  If we're
+   completing using backslashes, we need to quote some additional
+   characters (those that readline treats as word breaks), so we call
+   quote_word_break_chars on the result.  This returns newly-allocated
+   memory. */
+static char *
+bash_quote_filename (s, rtype, qcp)
+     char *s;
+     int rtype;
+     char *qcp;
+{
+  char *rtext, *mtext, *ret;
+  int rlen, cs;
+
+  rtext = (char *)NULL;
+
+  /* If RTYPE == MULT_MATCH, it means that there is
+     more than one match.  In this case, we do not add
+     the closing quote or attempt to perform tilde
+     expansion.  If RTYPE == SINGLE_MATCH, we try
+     to perform tilde expansion, because single and double
+     quotes inhibit tilde expansion by the shell. */
+
+  cs = completion_quoting_style;
+  /* Might need to modify the default completion style based on *qcp,
+     since it's set to any user-provided opening quote.  We also change
+     to single-quoting if there is no user-provided opening quote and
+     the word being completed contains newlines, since those are not
+     quoted correctly using backslashes (a backslash-newline pair is
+     special to the shell parser). */
+  if (*qcp == '\0' && cs == COMPLETE_BSQUOTE && mbschr (s, '\n'))
+    cs = COMPLETE_SQUOTE;
+  else if (*qcp == '"')
+    cs = COMPLETE_DQUOTE;
+  else if (*qcp == '\'')
+    cs = COMPLETE_SQUOTE;
+#if defined (BANG_HISTORY)
+  else if (*qcp == '\0' && history_expansion && cs == COMPLETE_DQUOTE &&
+          history_expansion_inhibited == 0 && mbschr (s, '!'))
+    cs = COMPLETE_BSQUOTE;
+
+  if (*qcp == '"' && history_expansion && cs == COMPLETE_DQUOTE &&
+       history_expansion_inhibited == 0 && mbschr (s, '!'))
+    {
+      cs = COMPLETE_BSQUOTE;
+      *qcp = '\0';
+    }
+#endif
+
+  /* Don't tilde-expand backslash-quoted filenames, since only single and
+     double quotes inhibit tilde expansion. */
+  mtext = s;
+  if (mtext[0] == '~' && rtype == SINGLE_MATCH && cs != COMPLETE_BSQUOTE)
+    mtext = bash_tilde_expand (s, 0);
+
+  switch (cs)
+    {
+    case COMPLETE_DQUOTE:
+      rtext = sh_double_quote (mtext);
+      break;
+    case COMPLETE_SQUOTE:
+      rtext = sh_single_quote (mtext);
+      break;
+    case COMPLETE_BSQUOTE:
+      rtext = sh_backslash_quote (mtext, complete_fullquote ? 0 : filename_bstab, 0);
+      break;
+    }
+
+  if (mtext != s)
+    free (mtext);
+
+  /* We may need to quote additional characters: those that readline treats
+     as word breaks that are not quoted by backslash_quote. */
+  if (rtext && cs == COMPLETE_BSQUOTE)
+    {
+      mtext = quote_word_break_chars (rtext);
+      free (rtext);
+      rtext = mtext;
+    }
+
+  /* Leave the opening quote intact.  The readline completion code takes
+     care of avoiding doubled opening quotes. */
+  if (rtext)
+    {
+      rlen = strlen (rtext);
+      ret = (char *)xmalloc (rlen + 1);
+      strcpy (ret, rtext);
+    }
+  else
+    {
+      ret = (char *)xmalloc (rlen = 1);
+      ret[0] = '\0';
+    }
+
+  /* If there are multiple matches, cut off the closing quote. */
+  if (rtype == MULT_MATCH && cs != COMPLETE_BSQUOTE)
+    ret[rlen - 1] = '\0';
+  free (rtext);
+  return ret;
+}
+
+/* Support for binding readline key sequences to Unix commands. */
+static Keymap cmd_xmap;
+
+#ifdef _MINIX
+static void
+#else
+static int
+#endif
+putx(c)
+     int c;
+{
+  int x;
+  x = putc (c, rl_outstream);
+#ifndef _MINIX
+  return x;
+#endif
+}
+  
+static int
+bash_execute_unix_command (count, key)
+     int count;        /* ignored */
+     int key;
+{
+  Keymap ckmap;                /* current keymap */
+  Keymap xkmap;                /* unix command executing keymap */
+  rl_command_func_t *func;
+  int type;
+  register int i, r;
+  intmax_t mi;
+  sh_parser_state_t ps;
+  char *cmd, *value, *l, *l1, *ce;
+  SHELL_VAR *v;
+  char ibuf[INT_STRLEN_BOUND(int) + 1];
+
+  /* First, we need to find the right command to execute.  This is tricky,
+     because we might have already indirected into another keymap, so we
+     have to walk cmd_xmap using the entire key sequence. */
+  cmd = (char *)rl_function_of_keyseq (rl_executing_keyseq, cmd_xmap, &type);
+    
+  if (cmd == 0 || type != ISMACR)
+    {
+      rl_crlf ();
+      internal_error (_("bash_execute_unix_command: cannot find keymap for command"));
+      rl_forced_update_display ();
+      return 1;
+    }
+
+  ce = rl_get_termcap ("ce");
+  if (ce)      /* clear current line */
+    {
+      fprintf (rl_outstream, "\r");
+      tputs (ce, 1, putx);
+      fflush (rl_outstream);
+    }
+  else
+    rl_crlf ();        /* move to a new line */
+
+  v = bind_variable ("READLINE_LINE", rl_line_buffer, 0);
+  if (v)
+    VSETATTR (v, att_exported);
+  l = v ? value_cell (v) : 0;
+  value = inttostr (rl_point, ibuf, sizeof (ibuf));
+  v = bind_int_variable ("READLINE_POINT", value);
+  if (v)
+    VSETATTR (v, att_exported);
+  array_needs_making = 1;
+
+  save_parser_state (&ps);
+  r = parse_and_execute (cmd, "bash_execute_unix_command", SEVAL_NOHIST|SEVAL_NOFREE);
+  restore_parser_state (&ps);
+
+  v = find_variable ("READLINE_LINE");
+  l1 = v ? value_cell (v) : 0;
+  if (l1 != l)
+    maybe_make_readline_line (value_cell (v));
+  v = find_variable ("READLINE_POINT");
+  if (v && legal_number (value_cell (v), &mi))
+    {
+      i = mi;
+      if (i != rl_point)
+       {
+         rl_point = i;
+         if (rl_point > rl_end)
+           rl_point = rl_end;
+         else if (rl_point < 0)
+           rl_point = 0;
+       }
+    }      
+
+  unbind_variable ("READLINE_LINE");
+  unbind_variable ("READLINE_POINT");
+  array_needs_making = 1;
+
+  /* and restore the readline buffer and display after command execution. */
+  rl_forced_update_display ();
+  return 0;
+}
+
+int
+print_unix_command_map ()
+{
+  Keymap save;
+
+  save = rl_get_keymap ();
+  rl_set_keymap (cmd_xmap);
+  rl_macro_dumper (1);
+  rl_set_keymap (save);
+  return 0;
+}
+
+static void
+init_unix_command_map ()
+{
+  cmd_xmap = rl_make_bare_keymap ();
+}
+
+static int
+isolate_sequence (string, ind, need_dquote, startp)
+     char *string;
+     int ind, need_dquote, *startp;
+{
+  register int i;
+  int c, passc, delim;
+
+  for (i = ind; string[i] && whitespace (string[i]); i++)
+    ;
+  /* NEED_DQUOTE means that the first non-white character *must* be `"'. */
+  if (need_dquote && string[i] != '"')
+    {
+      builtin_error (_("%s: first non-whitespace character is not `\"'"), string);
+      return -1;
+    }
+
+  /* We can have delimited strings even if NEED_DQUOTE == 0, like the command
+     string to bind the key sequence to. */
+  delim = (string[i] == '"' || string[i] == '\'') ? string[i] : 0;
+    
+  if (startp)
+    *startp = delim ? ++i : i;
+
+  for (passc = 0; c = string[i]; i++)
+    {
+      if (passc)
+       {
+         passc = 0;
+         continue;
+       }
+      if (c == '\\')
+       {
+         passc++;
+         continue;
+       }
+      if (c == delim)
+       break;
+    }
+
+  if (delim && string[i] != delim)
+    {
+      builtin_error (_("no closing `%c' in %s"), delim, string);
+      return -1;
+    }
+
+  return i;
+}
+
+int
+bind_keyseq_to_unix_command (line)
+     char *line;
+{
+  Keymap kmap;
+  char *kseq, *value;
+  int i, kstart;
+
+  if (cmd_xmap == 0)
+    init_unix_command_map ();
+
+  kmap = rl_get_keymap ();
+
+  /* We duplicate some of the work done by rl_parse_and_bind here, but
+     this code only has to handle `"keyseq": ["]command["]' and can
+     generate an error for anything else. */
+  i = isolate_sequence (line, 0, 1, &kstart);
+  if (i < 0)
+    return -1;
+
+  /* Create the key sequence string to pass to rl_generic_bind */
+  kseq = substring (line, kstart, i);
+
+  for ( ; line[i] && line[i] != ':'; i++)
+    ;
+  if (line[i] != ':')
+    {
+      builtin_error (_("%s: missing colon separator"), line);
+      FREE (kseq);
+      return -1;
+    }
+
+  i = isolate_sequence (line, i + 1, 0, &kstart);
+  if (i < 0)
+    {
+      FREE (kseq);
+      return -1;
+    }
+
+  /* Create the value string containing the command to execute. */
+  value = substring (line, kstart, i);
+
+  /* Save the command to execute and the key sequence in the CMD_XMAP */
+  rl_generic_bind (ISMACR, kseq, value, cmd_xmap);
+
+  /* and bind the key sequence in the current keymap to a function that
+     understands how to execute from CMD_XMAP */
+  rl_bind_keyseq_in_map (kseq, bash_execute_unix_command, kmap);
+
+  free (kseq);  
+  return 0;
+}
+
+/* Used by the programmable completion code.  Complete TEXT as a filename,
+   but return only directories as matches.  Dequotes the filename before
+   attempting to find matches. */
+char **
+bash_directory_completion_matches (text)
+     const char *text;
+{
+  char **m1;
+  char *dfn;
+  int qc;
+
+  qc = rl_dispatching ? rl_completion_quote_character : 0;  
+  dfn = bash_dequote_filename ((char *)text, qc);
+  m1 = rl_completion_matches (dfn, rl_filename_completion_function);
+  free (dfn);
+
+  if (m1 == 0 || m1[0] == 0)
+    return m1;
+  /* We don't bother recomputing the lcd of the matches, because it will just
+     get thrown away by the programmable completion code and recomputed
+     later. */
+  (void)bash_ignore_filenames (m1);
+  return m1;
+}
+
+char *
+bash_dequote_text (text)
+     const char *text;
+{
+  char *dtxt;
+  int qc;
+
+  qc = (text[0] == '"' || text[0] == '\'') ? text[0] : 0;
+  dtxt = bash_dequote_filename ((char *)text, qc);
+  return (dtxt);
+}
+
+/* This event hook is designed to be called after readline receives a signal
+   that interrupts read(2).  It gives reasonable responsiveness to interrupts
+   and fatal signals without executing too much code in a signal handler
+   context. */
+static int
+bash_event_hook ()
+{
+  /* If we're going to longjmp to top_level, make sure we clean up readline */
+  if (interrupt_state && signal_is_trapped (SIGINT) == 0)
+    rl_cleanup_after_signal ();
+
+  bashline_reset_event_hook ();
+  check_signals_and_traps ();  /* XXX */
+}
+
+#endif /* READLINE */

diff --git a/braces.c b/braces.c
index 3c373e11c21cafe65cb6b1ce9d7a0a0bd1efeeaa..cd268d1c33b126d6faee36f9dff371d602acfa86 100644 (file)
--- a/braces.c
+++ b/braces.c
@@ -39,6 +39,7 @@
 #  include "shell.h"
 #endif /* SHELL */
 
+#include "typemax.h"           /* INTMAX_MIN, INTMAX_MAX */
 #include "general.h"
 #include "shmbutil.h"
 #include "chartypes.h"

diff --git a/builtins/setattr.def b/builtins/setattr.def
index 000e433fd73530f0267206e8a58d7b604015bbae..faa02a9e276a7762dad5afc518f24832f433684b 100644 (file)
--- a/builtins/setattr.def
+++ b/builtins/setattr.def
@@ -93,7 +93,8 @@ Options:
   -a   refer to indexed array variables
   -A   refer to associative array variables
   -f   refer to shell functions
-  -p   display a list of all readonly variables and functions
+  -p   display a list of all readonly variables or functions, depending on
+        whether or not the -f option is given
 
 An argument of `--' disables further option processing.
 

diff --git a/configure b/configure
index 60d3a5dffdd6489bcf4b4b2b5994eebde66d3d74..8b54c36772f30d466c25b9fb208fef263fecc810 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,12 +1,14 @@
 #! /bin/sh
 # From configure.ac for Bash 4.3, version 4.056.
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for bash 4.3-alpha.
+# Generated by GNU Autoconf 2.68 for bash 4.3-alpha.
 #
 # Report bugs to <bug-bash@gnu.org>.
 #
 #
-# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+# Foundation, Inc.
 #
 #
 # This configure script is free software; the Free Software Foundation
@@ -135,31 +137,6 @@ export LANGUAGE
 # CDPATH.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
-# Use a proper internal environment variable to ensure we don't fall
-  # into an infinite loop, continuously re-executing ourselves.
-  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
-    _as_can_reexec=no; export _as_can_reexec;
-    # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in # ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-as_fn_exit 255
-  fi
-  # We don't want this to propagate to other subprocesses.
-          { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
   as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
   emulate sh
@@ -193,8 +170,7 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
 else
   exitcode=1; echo positional parameters were not saved.
 fi
-test x\$exitcode = x0 || exit 1
-test -x / || exit 1"
+test x\$exitcode = x0 || exit 1"
   as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
   as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
   eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -239,25 +215,21 @@ IFS=$as_save_IFS
 
 
       if test "x$CONFIG_SHELL" != x; then :
-  export CONFIG_SHELL
-             # We cannot yet assume a decent shell, so we have to provide a
-# neutralization value for shells without unset; and this also
-# works around shells that cannot unset nonexistent variables.
-# Preserve -v and -x to the replacement shell.
-BASH_ENV=/dev/null
-ENV=/dev/null
-(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-case $- in # ((((
-  *v*x* | *x*v* ) as_opts=-vx ;;
-  *v* ) as_opts=-v ;;
-  *x* ) as_opts=-x ;;
-  * ) as_opts= ;;
-esac
-exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
-# Admittedly, this is quite paranoid, since all the known shells bail
-# out after a failed `exec'.
-$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
-exit 255
+  # We cannot yet assume a decent shell, so we have to provide a
+       # neutralization value for shells without unset; and this also
+       # works around shells that cannot unset nonexistent variables.
+       # Preserve -v and -x to the replacement shell.
+       BASH_ENV=/dev/null
+       ENV=/dev/null
+       (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+       export CONFIG_SHELL
+       case $- in # ((((
+         *v*x* | *x*v* ) as_opts=-vx ;;
+         *v* ) as_opts=-v ;;
+         *x* ) as_opts=-x ;;
+         * ) as_opts= ;;
+       esac
+       exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
 fi
 
     if test x$as_have_required = xno; then :
@@ -360,14 +332,6 @@ $as_echo X"$as_dir" |
 
 
 } # as_fn_mkdir_p
-
-# as_fn_executable_p FILE
-# -----------------------
-# Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} # as_fn_executable_p
 # as_fn_append VAR VALUE
 # ----------------------
 # Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -489,10 +453,6 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   chmod +x "$as_me.lineno" ||
     { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
 
-  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
-  # already done that, so ensure we don't try to do so again and fall
-  # in an infinite loop.  This has already happened in practice.
-  _as_can_reexec=no; export _as_can_reexec
   # Don't try to exec as it changes $[0], causing all sort of problems
   # (the dirname of $[0] is not the place where we might find the
   # original and so on.  Autoconf is especially sensitive to this).
@@ -527,16 +487,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
   fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -548,8 +508,28 @@ else
   as_mkdir_p=false
 fi
 
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+       test -d "$1/.";
+      else
+       case $1 in #(
+       -*)set "./$1";;
+       esac;
+       case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+       ???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -1307,6 +1287,8 @@ target=$target_alias
 if test "x$host_alias" != x; then
   if test "x$build_alias" = x; then
     cross_compiling=maybe
+    $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used" >&2
   elif test "x$build_alias" != "x$host_alias"; then
     cross_compiling=yes
   fi
@@ -1647,9 +1629,9 @@ test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
 bash configure 4.3-alpha
-generated by GNU Autoconf 2.69
+generated by GNU Autoconf 2.68
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1725,7 +1707,7 @@ $as_echo "$ac_try_echo"; } >&5
         test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
         test "$cross_compiling" = yes ||
-        test -x conftest$ac_exeext
+        $as_test_x conftest$ac_exeext
        }; then :
   ac_retval=0
 else
@@ -2129,8 +2111,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -2146,8 +2127,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -2173,8 +2153,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -2190,8 +2169,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -2225,8 +2203,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -2356,7 +2333,7 @@ This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
 
@@ -3395,7 +3372,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3435,7 +3412,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_CC="gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3488,7 +3465,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3529,7 +3506,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
        continue
@@ -3587,7 +3564,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3631,7 +3608,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4077,7 +4054,8 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdarg.h>
 #include <stdio.h>
-struct stat;
+#include <sys/types.h>
+#include <sys/stat.h>
 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 struct buf { int x; };
 FILE * (*rcsopen) (struct buf *, struct stat *, int);
@@ -4361,7 +4339,7 @@ do
     for ac_prog in grep ggrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_GREP" || continue
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
 # Check for GNU ac_path_GREP and select it if it is found.
   # Check for GNU $ac_path_GREP
 case `"$ac_path_GREP" --version 2>&1` in
@@ -4427,7 +4405,7 @@ do
     for ac_prog in egrep; do
     for ac_exec_ext in '' $ac_executable_extensions; do
       ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
-      as_fn_executable_p "$ac_path_EGREP" || continue
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
 # Check for GNU ac_path_EGREP and select it if it is found.
   # Check for GNU $ac_path_EGREP
 case `"$ac_path_EGREP" --version 2>&1` in
@@ -4634,8 +4612,8 @@ else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
-#         define __EXTENSIONS__ 1
-          $ac_includes_default
+#        define __EXTENSIONS__ 1
+         $ac_includes_default
 int
 main ()
 {
@@ -4863,8 +4841,6 @@ _ACEOF
 esac
 rm -rf conftest*
   fi
-
-
 fi
 
 
@@ -5504,7 +5480,7 @@ case $as_dir/ in #((
     # by default.
     for ac_prog in ginstall scoinst install; do
       for ac_exec_ext in '' $ac_executable_extensions; do
-       if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+       if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
          if test $ac_prog = install &&
            grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
            # AIX install.  It has an incompatible calling convention.
@@ -5577,7 +5553,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_AR="${ac_tool_prefix}ar"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5617,7 +5593,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_AR="ar"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5670,7 +5646,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5710,7 +5686,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_ac_ct_RANLIB="ranlib"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5763,7 +5739,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_YACC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5896,11 +5872,11 @@ else
 int
 main ()
 {
-
+/* FIXME: Include the comments suggested by Paul. */
 #ifndef __cplusplus
-  /* Ultrix mips cc rejects this sort of thing.  */
+  /* Ultrix mips cc rejects this.  */
   typedef int charset[2];
-  const charset cs = { 0, 0 };
+  const charset cs;
   /* SunOS 4.1.1 cc rejects this.  */
   char const *const *pcpcc;
   char **ppc;
@@ -5917,9 +5893,8 @@ main ()
   ++pcpcc;
   ppc = (char**) pcpcc;
   pcpcc = (char const *const *) ppc;
-  { /* SCO 3.2v4 cc rejects this sort of thing.  */
-    char tx;
-    char *t = &tx;
+  { /* SCO 3.2v4 cc rejects this.  */
+    char *t;
     char const *s = 0 ? (char *) 0 : (char const *) 0;
 
     *t++ = 0;
@@ -5935,10 +5910,10 @@ main ()
     iptr p = 0;
     ++p;
   }
-  { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
+  { /* AIX XL C 1.02.0.0 rejects this saying
        "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
-    struct s { int j; const int *ap[3]; } bx;
-    struct s *b = &bx; b->j = 5;
+    struct s { int j; const int *ap[3]; };
+    struct s *b; b->j = 5;
   }
   { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
     const int foo = 10;
@@ -6291,8 +6266,7 @@ static int test_array [1 - 2 * !((0 < ((DBL_MAX_EXP < LDBL_MAX_EXP)
                   - (LDBL_MANT_DIG < DBL_MANT_DIG)))
            && (int) LDBL_EPSILON == 0
          )];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -6348,8 +6322,7 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(((char) -1) < 0)];
-test_array [0] = 0;
-return test_array [0];
+test_array [0] = 0
 
   ;
   return 0;
@@ -6567,7 +6540,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_path_GMSGFMT="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -6931,20 +6904,23 @@ else
 /* end confdefs.h.  */
 $ac_includes_default
 int
-find_stack_direction (int *addr, int depth)
+find_stack_direction ()
 {
-  int dir, dummy = 0;
-  if (! addr)
-    addr = &dummy;
-  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
-  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
-  return dir + dummy;
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
 }
 
 int
-main (int argc, char **argv)
+main ()
 {
-  return find_stack_direction (0, argc + !argv + 20) < 0;
+  return find_stack_direction () < 0;
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -8302,7 +8278,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
     ac_cv_prog_INTLBISON="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -9446,20 +9422,23 @@ else
 /* end confdefs.h.  */
 $ac_includes_default
 int
-find_stack_direction (int *addr, int depth)
+find_stack_direction ()
 {
-  int dir, dummy = 0;
-  if (! addr)
-    addr = &dummy;
-  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
-  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
-  return dir + dummy;
+  static char *addr = 0;
+  auto char dummy;
+  if (addr == 0)
+    {
+      addr = &dummy;
+      return find_stack_direction ();
+    }
+  else
+    return (&dummy > addr) ? 1 : -1;
 }
 
 int
-main (int argc, char **argv)
+main ()
 {
-  return find_stack_direction (0, argc + !argv + 20) < 0;
+  return find_stack_direction () < 0;
 }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
@@ -16416,16 +16395,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
+    # In both cases, we have to default to `cp -p'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
+      as_ln_s='cp -p'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -pR'
+    as_ln_s='cp -p'
   fi
 else
-  as_ln_s='cp -pR'
+  as_ln_s='cp -p'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -16485,16 +16464,28 @@ else
   as_mkdir_p=false
 fi
 
-
-# as_fn_executable_p FILE
-# -----------------------
-# Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} # as_fn_executable_p
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+       test -d "$1/.";
+      else
+       case $1 in #(
+       -*)set "./$1";;
+       esac;
+       case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+       ???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -16516,7 +16507,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # values after options handling.
 ac_log="
 This file was extended by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.69.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -16582,10 +16573,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
 bash config.status 4.3-alpha
-configured by $0, generated by GNU Autoconf 2.69,
+configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2012 Free Software Foundation, Inc.
+Copyright (C) 2010 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -16674,7 +16665,7 @@ fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
-  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
   \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'

diff --git a/doc/Makefile.in b/doc/Makefile.in
index 493985b8da1ba7131749be7cc9c34db83299a849..21dff278464fd843268d176094cba830119f875f 100644 (file)
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -1,6 +1,6 @@
 # This Makefile is for the Bash/documentation directory -*- text -*-.
 #
-# Copyright (C) 2003-2009 Free Software Foundation, Inc.
+# Copyright (C) 2003-2013 Free Software Foundation, Inc.
 
 #   This program is free software: you can redistribute it and/or modify
 #   it under the terms of the GNU General Public License as published by
@@ -23,6 +23,8 @@ PACKAGE_NAME = @PACKAGE_NAME@
 PACKAGE_STRING = @PACKAGE_STRING@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+
 #
 SHELL = @MAKE_SHELL@
 RM         = rm -f
@@ -38,6 +40,8 @@ datarootdir = @datarootdir@
 
 infodir = @infodir@
 
+docdir = @docdir@
+
 # set this to a directory name to have the HTML files installed
 htmldir = @htmldir@
 
@@ -191,6 +195,9 @@ bashref.pdf: bashref.dvi
 bash.pdf: bash.ps
 rose94.pdf: rose94.ps
 
+OTHER_DOCS = $(srcdir)/FAQ $(srcdir)/INTRO
+OTHER_INSTALLED_DOCS = FAQ INTRO
+
 $(MAN2HTML):   ${topdir}/support/man2html.c
        -( cd ${BUILD_DIR}/support ; ${MAKE} ${MFLAGS} man2html)
 
@@ -218,6 +225,7 @@ maybe-clean:
 installdirs:
        -$(SHELL) $(SUPPORT_SRCDIR)/mkinstalldirs $(DESTDIR)$(man1dir)
        -$(SHELL) $(SUPPORT_SRCDIR)/mkinstalldirs $(DESTDIR)$(infodir)
+       -$(SHELL) $(SUPPORT_SRCDIR)/mkinstalldirs $(DESTDIR)$(docdir)
        -if test -n "$(htmldir)" ; then \
                $(SHELL) $(SUPPORT_SRCDIR)/mkinstalldirs $(DESTDIR)$(htmldir) ; \
        fi
@@ -225,6 +233,7 @@ installdirs:
 install: info installdirs bash.info
        -$(INSTALL_DATA) $(srcdir)/bash.1 $(DESTDIR)$(man1dir)/bash${man1ext}
        -$(INSTALL_DATA) $(srcdir)/bashbug.1 $(DESTDIR)$(man1dir)/bashbug${man1ext}
+       -$(INSTALL_DATA) $(OTHER_DOCS) $(DESTDIR)$(docdir)
 # uncomment the next lines to install the builtins man page
 #      sed 's:bash\.1:man1/&:' $(srcdir)/builtins.1 > $${TMPDIR:-/var/tmp}/builtins.1
 #      -$(INSTALL_DATA) $${TMPDIR:-/var/tmp}/builtins.1 $(DESTDIR)$(man1dir)/bash_builtins${man1ext}
@@ -252,6 +261,7 @@ uninstall:
        -$(RM) $(DESTDIR)$(man1dir)/bash${man1ext} $(DESTDIR)$(man1dir)/bashbug${man1ext}
        -$(RM) $(DESTDIR)$(man1dir)/bash_builtins${man1ext}
        $(RM) $(DESTDIR)$(infodir)/bash.info
+       -( cd $(DESTDIR)$(docdir) && $(RM) $(OTHER_INSTALLED_DOCS) )
        -if test -n "$(htmldir)" ; then \
                $(RM) $(DESTDIR)$(htmldir)/bash.html ; \
                $(RM) $(DESTDIR)$(htmldir)/bashref.html ; \

diff --git a/doc/bash.1 b/doc/bash.1
index 296ad97ae99cd836d6a466fff80ff19e3ac5441f..2cd81dcd053581b6bf16d2f6075cbbb5c4caf6bf 100644 (file)
--- a/doc/bash.1
+++ b/doc/bash.1
@@ -5,12 +5,12 @@
 .\"    Case Western Reserve University
 .\"    chet@po.cwru.edu
 .\"
-.\"    Last Change: Tue Jan  8 15:51:04 EST 2013
+.\"    Last Change: Sun Mar 10 12:10:16 EDT 2013
 .\"
 .\" bash_builtins, strip all but Built-Ins section
 .if \n(zZ=1 .ig zZ
 .if \n(zY=1 .ig zY
-.TH BASH 1 "2013 January 8" "GNU Bash 4.2"
+.TH BASH 1 "2013 March 10" "GNU Bash 4.3"
 .\"
 .\" There's some problem with having a `@'
 .\" in a tagged paragraph with the BSD man macros.
@@ -222,6 +222,11 @@ This option is on by default if the shell is invoked as
 .B \-\-posix
 Change the behavior of \fBbash\fP where the default operation differs
 from the POSIX standard to match the standard (\fIposix mode\fP).
+See
+.SM
+.B "SEE ALSO"
+below for a reference to a document that details how posix mode affects
+bash's behavior.
 .TP
 .B \-\-restricted
 The shell becomes restricted (see
@@ -1931,7 +1936,7 @@ A sample value is
 .TP
 .B CHILD_MAX
 Set the number of exited child status values for the shell to remember.
-Bash will not allow this value to be decreased below a Posix-mandated
+Bash will not allow this value to be decreased below a POSIX-mandated
 minimum, and there is a maximum value (currently 8192) that this may
 not exceed.
 The minimum value is system-dependent.
@@ -8543,7 +8548,8 @@ the remaining names are assigned empty values.
 The characters in 
 .SM
 .B IFS
-are used to split the line into words.
+are used to split the line into words using the same rules the shell
+uses for expansion (described above under \fBWord Splitting\fP).
 The backslash character (\fB\e\fP) may be used to remove any special
 meaning for the next character read and for line continuation.
 Options, if supplied, have the following meanings:
@@ -8716,7 +8722,7 @@ Without options, the name and value of each shell variable are displayed
 in a format that can be reused as input
 for setting or resetting the currently-set variables.
 Read-only variables cannot be reset.
-In \fIposix mode\fP, only shell variables are listed.
+In \fIposix\fP mode, only shell variables are listed.
 The output is sorted according to the current locale.
 When options are specified, they set or unset shell attributes.
 Any arguments remaining after option processing are treated
@@ -8921,6 +8927,11 @@ Change the behavior of
 .B bash
 where the default operation differs
 from the POSIX standard to match the standard (\fIposix mode\fP).
+See
+.SM
+.B "SEE ALSO"
+below for a reference to a document that details how posix mode affects
+bash's behavior.
 .TP 8
 .B privileged
 Same as
@@ -9238,7 +9249,7 @@ interrupt; previous versions continue with the next command in the list.
 .B compat41
 If set,
 .BR bash ,
-when in posix mode, treats a single quote in a double-quoted
+when in \fIposix\fP mode, treats a single quote in a double-quoted
 parameter expansion as a special character.  The single quotes must match
 (an even number) and the characters between the single quotes are considered
 quoted.  This is the behavior of posix mode through version 4.1.
@@ -10173,6 +10184,8 @@ script.
 .TP
 \fIPortable Operating System Interface (POSIX) Part 2: Shell and Utilities\fP, IEEE
 .TP
+http://tiswww.case.edu/~chet/bash/POSIX -- a description of posix mode
+.TP
 \fIsh\fP(1), \fIksh\fP(1), \fIcsh\fP(1)
 .TP
 \fIemacs\fP(1), \fIvi\fP(1)

diff --git a/doc/bash.1~ b/doc/bash.1~
new file mode 100644 (file)
index 0000000..3e2a776
--- /dev/null
+++ b/doc/bash.1~
@@ -0,0 +1,10293 @@
+.\"
+.\" MAN PAGE COMMENTS to
+.\"
+.\"    Chet Ramey
+.\"    Case Western Reserve University
+.\"    chet@po.cwru.edu
+.\"
+.\"    Last Change: Mon Mar  4 15:49:17 EST 2013
+.\"
+.\" bash_builtins, strip all but Built-Ins section
+.if \n(zZ=1 .ig zZ
+.if \n(zY=1 .ig zY
+.TH BASH 1 "2013 March 4" "GNU Bash 4.2"
+.\"
+.\" There's some problem with having a `@'
+.\" in a tagged paragraph with the BSD man macros.
+.\" It has to do with `@' appearing in the }1 macro.
+.\" This is a problem on 4.3 BSD and Ultrix, but Sun
+.\" appears to have fixed it.
+.\" If you're seeing the characters
+.\" `@u-3p' appearing before the lines reading
+.\" `possible-hostname-completions
+.\" and `complete-hostname' down in READLINE,
+.\" then uncomment this redefinition.
+.\"
+.de }1
+.ds ]X \&\\*(]B\\
+.nr )E 0
+.if !"\\$1"" .nr )I \\$1n
+.}f
+.ll \\n(LLu
+.in \\n()Ru+\\n(INu+\\n()Iu
+.ti \\n(INu
+.ie !\\n()Iu+\\n()Ru-\w\a\\*(]X\au-3p \{\\*(]X
+.br\}
+.el \\*(]X\h\a|\\n()Iu+\\n()Ru\a\c
+.}f
+..
+.\"
+.\" File Name macro.  This used to be `.PN', for Path Name,
+.\" but Sun doesn't seem to like that very much.
+.\"
+.de FN
+\fI\|\\$1\|\fP
+..
+.SH NAME
+bash \- GNU Bourne-Again SHell
+.SH SYNOPSIS
+.B bash
+[options]
+[command_string | file]
+.SH COPYRIGHT
+.if n Bash is Copyright (C) 1989-2013 by the Free Software Foundation, Inc.
+.if t Bash is Copyright \(co 1989-2013 by the Free Software Foundation, Inc.
+.SH DESCRIPTION
+.B Bash
+is an \fBsh\fR-compatible command language interpreter that
+executes commands read from the standard input or from a file.
+.B Bash
+also incorporates useful features from the \fIKorn\fP and \fIC\fP
+shells (\fBksh\fP and \fBcsh\fP).
+.PP
+.B Bash
+is intended to be a conformant implementation of the
+Shell and Utilities portion of the IEEE POSIX specification
+(IEEE Standard 1003.1).
+.B Bash
+can be configured to be POSIX-conformant by default.
+.SH OPTIONS
+All of the  single-character shell options documented in the
+description of the \fBset\fR builtin command can be used as options
+when the shell is invoked.
+In addition, \fBbash\fR
+interprets the following options when it is invoked:
+.PP
+.PD 0
+.TP 10
+.B \-c
+If the
+.B \-c
+option is present, then commands are read from the first non-option argument
+.IR command_string .
+If there are arguments after the
+.IR command_string ,
+they are assigned to the positional parameters, starting with
+.BR $0 .
+.TP
+.B \-i
+If the
+.B \-i
+option is present, the shell is
+.IR interactive .
+.TP
+.B \-l
+Make
+.B bash
+act as if it had been invoked as a login shell (see
+.SM
+.B INVOCATION
+below).
+.TP
+.B \-r
+If the
+.B \-r
+option is present, the shell becomes
+.I restricted
+(see
+.SM
+.B "RESTRICTED SHELL"
+below).
+.TP
+.B \-s
+If the
+.B \-s
+option is present, or if no arguments remain after option
+processing, then commands are read from the standard input.
+This option allows the positional parameters to be set
+when invoking an interactive shell.
+.TP
+.B \-D
+A list of all double-quoted strings preceded by \fB$\fP
+is printed on the standard output.
+These are the strings that
+are subject to language translation when the current locale
+is not \fBC\fP or \fBPOSIX\fP.
+This implies the \fB\-n\fP option; no commands will be executed.
+.TP
+.B [\-+]O [\fIshopt_option\fP]
+\fIshopt_option\fP is one of the shell options accepted by the
+\fBshopt\fP builtin (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+If \fIshopt_option\fP is present, \fB\-O\fP sets the value of that option;
+\fB+O\fP unsets it.
+If \fIshopt_option\fP is not supplied, the names and values of the shell
+options accepted by \fBshopt\fP are printed on the standard output.
+If the invocation option is \fB+O\fP, the output is displayed in a format
+that may be reused as input.
+.TP
+.B \-\-
+A
+.B \-\-
+signals the end of options and disables further option processing.
+Any arguments after the
+.B \-\-
+are treated as filenames and arguments.  An argument of
+.B \-
+is equivalent to \fB\-\-\fP.
+.PD
+.PP
+.B Bash
+also interprets a number of multi-character options.
+These options must appear on the command line before the
+single-character options to be recognized.
+.PP
+.PD 0
+.TP
+.B \-\-debugger
+Arrange for the debugger profile to be executed before the shell
+starts.
+Turns on extended debugging mode (see the description of the
+.B extdebug
+option to the
+.B shopt
+builtin below).
+.TP
+.B \-\-dump\-po\-strings
+Equivalent to \fB\-D\fP, but the output is in the GNU \fIgettext\fP
+\fBpo\fP (portable object) file format.
+.TP
+.B \-\-dump\-strings
+Equivalent to \fB\-D\fP.
+.TP
+.B \-\-help
+Display a usage message on standard output and exit successfully.
+.TP
+\fB\-\-init\-file\fP \fIfile\fP
+.PD 0
+.TP
+\fB\-\-rcfile\fP \fIfile\fP
+.PD
+Execute commands from
+.I file
+instead of the standard personal initialization file
+.I ~/.bashrc
+if the shell is interactive (see
+.SM
+.B INVOCATION
+below).
+.TP
+.B \-\-login
+Equivalent to \fB\-l\fP.
+.TP
+.B \-\-noediting
+Do not use the GNU
+.B readline
+library to read command lines when the shell is interactive.
+.TP
+.B \-\-noprofile
+Do not read either the system-wide startup file
+.FN /etc/profile
+or any of the personal initialization files
+.IR ~/.bash_profile ,
+.IR ~/.bash_login ,
+or
+.IR ~/.profile .
+By default,
+.B bash
+reads these files when it is invoked as a login shell (see
+.SM
+.B INVOCATION
+below).
+.TP
+.B \-\-norc
+Do not read and execute the personal initialization file
+.I ~/.bashrc
+if the shell is interactive.
+This option is on by default if the shell is invoked as
+.BR sh .
+.TP
+.B \-\-posix
+Change the behavior of \fBbash\fP where the default operation differs
+from the POSIX standard to match the standard (\fIposix mode\fP).
+See
+.SM
+.B "SEE ALSO"
+below for a reference to a document that details how posix mode affects
+bash's behavior.
+.TP
+.B \-\-restricted
+The shell becomes restricted (see
+.SM
+.B "RESTRICTED SHELL"
+below).
+.TP
+.B \-\-verbose
+Equivalent to  \fB\-v\fP.
+.TP
+.B \-\-version
+Show version information for this instance of
+.B bash
+on the standard output and exit successfully.
+.PD
+.SH ARGUMENTS
+If arguments remain after option processing, and neither the
+.B \-c
+nor the
+.B \-s
+option has been supplied, the first argument is assumed to
+be the name of a file containing shell commands.
+If
+.B bash
+is invoked in this fashion, 
+.B $0
+is set to the name of the file, and the positional parameters
+are set to the remaining arguments.
+.B Bash
+reads and executes commands from this file, then exits.
+\fBBash\fP's exit status is the exit status of the last command
+executed in the script.
+If no commands are executed, the exit status is 0.
+An attempt is first made to open the file in the current directory, and,
+if no file is found, then the shell searches the directories in
+.SM
+.B PATH
+for the script.
+.SH INVOCATION
+A \fIlogin shell\fP is one whose first character of argument zero is a
+.BR \- ,
+or one started with the 
+.B \-\-login
+option.
+.PP
+An \fIinteractive\fP shell is one started without non-option arguments
+and without the
+.B \-c
+option
+whose standard input and error are
+both connected to terminals (as determined by
+.IR isatty (3)),
+or one started with the
+.B \-i
+option.
+.SM
+.B PS1
+is set and
+.B $\-
+includes
+.B i
+if
+.B bash
+is interactive,
+allowing a shell script or a startup file to test this state.
+.PP
+The following paragraphs describe how
+.B bash
+executes its startup files.
+If any of the files exist but cannot be read,
+.B bash
+reports an error.
+Tildes are expanded in filenames as described below under
+.B "Tilde Expansion"
+in the
+.SM
+.B EXPANSION
+section.
+.PP
+When
+.B bash
+is invoked as an interactive login shell, or as a non-interactive shell
+with the \fB\-\-login\fP option, it first reads and
+executes commands from the file \fI/etc/profile\fP, if that
+file exists.
+After reading that file, it looks for \fI~/.bash_profile\fP,
+\fI~/.bash_login\fP, and \fI~/.profile\fP, in that order, and reads
+and executes commands from the first one that exists and is readable.
+The
+.B \-\-noprofile
+option may be used when the shell is started to inhibit this behavior.
+.PP
+When a login shell exits,
+.B bash
+reads and executes commands from the file \fI~/.bash_logout\fP, if it
+exists.
+.PP
+When an interactive shell that is not a login shell is started,
+.B bash
+reads and executes commands from \fI~/.bashrc\fP, if that file exists.
+This may be inhibited by using the
+.B \-\-norc
+option.
+The \fB\-\-rcfile\fP \fIfile\fP option will force
+.B bash
+to read and execute commands from \fIfile\fP instead of \fI~/.bashrc\fP.
+.PP
+When
+.B bash
+is started non-interactively, to run a shell script, for example, it
+looks for the variable
+.SM
+.B BASH_ENV
+in the environment, expands its value if it appears there, and uses the
+expanded value as the name of a file to read and execute.
+.B Bash
+behaves as if the following command were executed:
+.sp .5
+.RS
+.if t \f(CWif [ \-n "$BASH_ENV" ]; then . "$BASH_ENV"; fi\fP
+.if n if [ \-n "$BASH_ENV" ]; then . "$BASH_ENV"; fi
+.RE
+.sp .5
+but the value of the
+.SM
+.B PATH
+variable is not used to search for the filename.
+.PP
+If
+.B bash
+is invoked with the name
+.BR sh ,
+it tries to mimic the startup behavior of historical versions of
+.B sh
+as closely as possible,
+while conforming to the POSIX standard as well.
+When invoked as an interactive login shell, or a non-interactive
+shell with the \fB\-\-login\fP option, it first attempts to
+read and execute commands from
+.I /etc/profile
+and
+.IR ~/.profile ,
+in that order.
+The
+.B \-\-noprofile
+option may be used to inhibit this behavior.
+When invoked as an interactive shell with the name
+.BR sh ,
+.B bash
+looks for the variable
+.SM
+.BR ENV ,
+expands its value if it is defined, and uses the
+expanded value as the name of a file to read and execute.
+Since a shell invoked as
+.B sh
+does not attempt to read and execute commands from any other startup
+files, the
+.B \-\-rcfile
+option has no effect.
+A non-interactive shell invoked with the name
+.B sh
+does not attempt to read any other startup files. 
+When invoked as
+.BR sh ,
+.B bash
+enters
+.I posix
+mode after the startup files are read.
+.PP
+When
+.B bash
+is started in
+.I posix
+mode, as with the
+.B \-\-posix
+command line option, it follows the POSIX standard for startup files.
+In this mode, interactive shells expand the
+.SM
+.B ENV
+variable and commands are read and executed from the file
+whose name is the expanded value.
+No other startup files are read.
+.PP
+.B Bash
+attempts to determine when it is being run with its standard input
+connected to a network connection, as when executed by the remote shell
+daemon, usually \fIrshd\fP, or the secure shell daemon \fIsshd\fP.
+If
+.B bash
+determines it is being run in this fashion, it reads and executes
+commands from \fI~/.bashrc\fP, if that file exists and is readable.
+It will not do this if invoked as \fBsh\fP.
+The
+.B \-\-norc
+option may be used to inhibit this behavior, and the
+.B \-\-rcfile
+option may be used to force another file to be read, but
+\fIrshd\fP does not generally invoke the shell with those options
+or allow them to be specified.
+.PP
+If the shell is started with the effective user (group) id not equal to the
+real user (group) id, and the \fB\-p\fP option is not supplied, no startup
+files are read, shell functions are not inherited from the environment, the
+.SM
+.BR SHELLOPTS ,
+.SM
+.BR BASHOPTS ,
+.SM
+.BR CDPATH ,
+and
+.SM
+.B GLOBIGNORE
+variables, if they appear in the environment, are ignored,
+and the effective user id is set to the real user id.
+If the \fB\-p\fP option is supplied at invocation, the startup behavior is
+the same, but the effective user id is not reset.
+.SH DEFINITIONS
+.PP
+The following definitions are used throughout the rest of this
+document.
+.PD 0
+.TP
+.B blank 
+A space or tab.
+.TP
+.B word
+A sequence of characters considered as a single unit by the shell.
+Also known as a
+.BR token .
+.TP
+.B name
+A 
+.I word
+consisting only of alphanumeric characters and underscores, and
+beginning with an alphabetic character or an underscore.  Also
+referred to as an
+.BR identifier .
+.TP
+.B metacharacter
+A character that, when unquoted, separates words.  One of the following:
+.br
+.RS
+.PP
+.if t \fB|  &  ;  (  )  <  >  space  tab\fP
+.if n \fB|  & ; ( ) < > space tab\fP
+.RE
+.PP
+.TP
+.B control operator
+A \fItoken\fP that performs a control function.  It is one of the following
+symbols:
+.RS
+.PP
+.if t \fB||  &  &&  ;  ;;  (  )  |  |&    <newline>\fP
+.if n \fB|| & && ; ;; ( ) | |& <newline>\fP
+.RE
+.PD
+.SH "RESERVED WORDS"
+\fIReserved words\fP are words that have a special meaning to the shell.
+The following words are recognized as reserved when unquoted and either
+the first word of a simple command (see
+.SM
+.B SHELL GRAMMAR
+below) or the third word of a 
+.B case 
+or
+.B for
+command:
+.if t .RS
+.PP
+.B
+.if n ! case  coproc  do done elif else esac fi for function if in select then until while { } time [[ ]]
+.if t !    case    coproc    do    done    elif    else    esac    fi    for    function    if    in    select    then    until    while    {    }    time    [[    ]]
+.if t .RE
+.SH "SHELL GRAMMAR"
+.SS Simple Commands
+.PP
+A \fIsimple command\fP is a sequence of optional variable assignments
+followed by \fBblank\fP-separated words and redirections, and
+terminated by a \fIcontrol operator\fP.  The first word
+specifies the command to be executed, and is passed as argument zero.
+The remaining words are passed as arguments to the invoked command.
+.PP
+The return value of a \fIsimple command\fP is its exit status, or
+128+\fIn\^\fP if the command is terminated by signal
+.IR n .
+.SS Pipelines
+.PP
+A \fIpipeline\fP is a sequence of one or more commands separated by
+one of the control operators
+.B |
+or \fB|&\fP.
+The format for a pipeline is:
+.RS
+.PP
+[\fBtime\fP [\fB\-p\fP]] [ ! ] \fIcommand\fP [ [\fB|\fP\(bv\fB|&\fP] \fIcommand2\fP ... ]
+.RE
+.PP
+The standard output of
+.I command
+is connected via a pipe to the standard input of
+.IR command2 .
+This connection is performed before any redirections specified by the
+command (see
+.SM
+.B REDIRECTION
+below).
+If \fB|&\fP is used, \fIcommand\fP's standard output and standard error
+are connected to
+\fIcommand2\fP's standard input through the pipe;
+it is shorthand for \fB2>&1 |\fP.
+This implicit redirection of the standard error is
+performed after any redirections specified by the command.
+.PP
+The return status of a pipeline is the exit status of the last
+command, unless the \fBpipefail\fP option is enabled.
+If \fBpipefail\fP is enabled, the pipeline's return status is the
+value of the last (rightmost) command to exit with a non-zero status,
+or zero if all commands exit successfully.
+If the reserved word
+.B !
+precedes a pipeline, the exit status of that pipeline is the logical
+negation of the exit status as described above.
+The shell waits for all commands in the pipeline to
+terminate before returning a value.
+.PP
+If the
+.B time
+reserved word precedes a pipeline, the elapsed as well as user and
+system time consumed by its execution are reported when the pipeline
+terminates.
+The \fB\-p\fP option changes the output format to that specified by POSIX.
+When the shell is in \fIposix mode\fP, it does not recognize
+\fBtime\fP as a reserved word if the next token begins with a `-'.
+The
+.SM
+.B TIMEFORMAT
+variable may be set to a format string that specifies how the timing
+information should be displayed; see the description of
+.SM
+.B TIMEFORMAT
+under
+.B "Shell Variables"
+below.
+.PP
+When the shell is in \fIposix mode\fP, \fBtime\fP
+may be followed by a newline.  In this case, the shell displays the
+total user and system time consumed by the shell and its children.
+The
+.SM
+.B TIMEFORMAT
+variable may be used to specify the format of
+the time information.
+.PP
+Each command in a pipeline is executed as a separate process (i.e., in a
+subshell).
+.SS Lists
+.PP
+A \fIlist\fP is a sequence of one or more pipelines separated by one
+of the operators
+.BR ; ,
+.BR & ,
+.BR && ,
+or
+.BR || ,
+and optionally terminated by one of
+.BR ; ,
+.BR & ,
+or
+.BR <newline> .
+.PP
+Of these list operators,
+.B &&
+and
+.B ||
+have equal precedence, followed by
+.B ;
+and
+.BR & ,
+which have equal precedence.
+.PP
+A sequence of one or more newlines may appear in a \fIlist\fP instead
+of a semicolon to delimit commands.
+.PP
+If a command is terminated by the control operator
+.BR & ,
+the shell executes the command in the \fIbackground\fP
+in a subshell.  The shell does not wait for the command to
+finish, and the return status is 0.  Commands separated by a
+.B ;
+are executed sequentially; the shell waits for each
+command to terminate in turn.  The return status is the
+exit status of the last command executed.
+.PP
+AND and OR lists are sequences of one of more pipelines separated by the
+\fB&&\fP and \fB||\fP control operators, respectively.
+AND and OR lists are executed with left associativity.
+An AND list has the form
+.RS
+.PP
+\fIcommand1\fP \fB&&\fP \fIcommand2\fP
+.RE
+.PP
+.I command2
+is executed if, and only if,
+.I command1
+returns an exit status of zero.
+.PP
+An OR list has the form
+.RS
+.PP
+\fIcommand1\fP \fB||\fP \fIcommand2\fP
+.PP
+.RE
+.PP
+.I command2
+is executed if and only if
+.I command1
+returns a non-zero exit status.
+The return status of
+AND and OR lists is the exit status of the last command
+executed in the list.
+.SS Compound Commands
+.PP
+A \fIcompound command\fP is one of the following.
+In most cases a \fIlist\fP in a command's description may be separated from
+the rest of the command by one or more newlines, and may be followed by a
+newline in place of a semicolon.
+.TP
+(\fIlist\fP)
+\fIlist\fP is executed in a subshell environment (see
+.SM
+\fBCOMMAND EXECUTION ENVIRONMENT\fP
+below).
+Variable assignments and builtin
+commands that affect the shell's environment do not remain in effect
+after the command completes.  The return status is the exit status of
+\fIlist\fP.
+.TP
+{ \fIlist\fP; }
+\fIlist\fP is simply executed in the current shell environment.
+\fIlist\fP must be terminated with a newline or semicolon.
+This is known as a \fIgroup command\fP.
+The return status is the exit status of
+\fIlist\fP.
+Note that unlike the metacharacters \fB(\fP and \fB)\fP, \fB{\fP and
+\fB}\fP are \fIreserved words\fP and must occur where a reserved
+word is permitted to be recognized.  Since they do not cause a word
+break, they must be separated from \fIlist\fP by whitespace or another
+shell metacharacter.
+.TP
+((\fIexpression\fP))
+The \fIexpression\fP is evaluated according to the rules described
+below under
+.SM
+.BR "ARITHMETIC EVALUATION" .
+If the value of the expression is non-zero, the return status is 0;
+otherwise the return status is 1.  This is exactly equivalent to
+\fBlet "\fIexpression\fP"\fR.
+.TP
+\fB[[\fP \fIexpression\fP \fB]]\fP
+Return a status of 0 or 1 depending on the evaluation of
+the conditional expression \fIexpression\fP.
+Expressions are composed of the primaries described below under
+.SM
+.BR "CONDITIONAL EXPRESSIONS" .
+Word splitting and pathname expansion are not performed on the words
+between the \fB[[\fP and \fB]]\fP; tilde expansion,
+parameter and variable expansion,
+arithmetic expansion, command substitution, process
+substitution, and quote removal are performed.
+Conditional operators such as \fB\-f\fP must be unquoted to be recognized
+as primaries.
+.if t .sp 0.5
+.if n .sp 1
+When used with \fB[[\fP, the \fB<\fP and \fB>\fP operators sort
+lexicographically using the current locale.
+.if t .sp 0.5
+.if n .sp 1
+When the \fB==\fP and \fB!=\fP operators are used, the string to the
+right of the operator is considered a pattern and matched according
+to the rules described below under \fBPattern Matching\fP.
+The \fB=\fP operator is equivalent to \fB==\fP.
+If the shell option
+.B nocasematch
+is enabled, the match is performed without regard to the case
+of alphabetic characters.
+The return value is 0 if the string matches (\fB==\fP) or does not match
+(\fB!=\fP) the pattern, and 1 otherwise.
+Any part of the pattern may be quoted to force the quoted portion
+to be matched as a string.
+.if t .sp 0.5
+.if n .sp 1
+An additional binary operator, \fB=~\fP, is available, with the same
+precedence as \fB==\fP and \fB!=\fP.
+When it is used, the string to the right of the operator is considered
+an extended regular expression and matched accordingly (as in \fIregex\fP(3)).  
+The return value is 0 if the string matches
+the pattern, and 1 otherwise.
+If the regular expression is syntactically incorrect, the conditional
+expression's return value is 2.
+If the shell option
+.B nocasematch
+is enabled, the match is performed without regard to the case
+of alphabetic characters.
+Any part of the pattern may be quoted to force the quoted portion
+to be matched as a string.
+Bracket expressions in regular expressions must be treated carefully,
+since normal quoting characters lose their meanings between brackets.
+If the pattern is stored in a shell variable, quoting the variable
+expansion forces the entire pattern to be matched as a string.
+Substrings matched by parenthesized subexpressions within the regular
+expression are saved in the array variable
+.SM
+.BR BASH_REMATCH .
+The element of
+.SM
+.B BASH_REMATCH
+with index 0 is the portion of the string
+matching the entire regular expression.
+The element of
+.SM
+.B BASH_REMATCH
+with index \fIn\fP is the portion of the
+string matching the \fIn\fPth parenthesized subexpression.
+.if t .sp 0.5
+.if n .sp 1
+Expressions may be combined using the following operators, listed
+in decreasing order of precedence:
+.if t .sp 0.5
+.if n .sp 1
+.RS
+.PD 0
+.TP
+.B ( \fIexpression\fP )
+Returns the value of \fIexpression\fP.
+This may be used to override the normal precedence of operators.
+.TP
+.B ! \fIexpression\fP
+True if
+.I expression
+is false.
+.TP
+\fIexpression1\fP \fB&&\fP \fIexpression2\fP
+True if both
+.I expression1
+and
+.I expression2
+are true.
+.TP
+\fIexpression1\fP \fB||\fP \fIexpression2\fP
+True if either
+.I expression1
+or
+.I expression2
+is true.
+.PD
+.LP
+The \fB&&\fP and \fB||\fP
+operators do not evaluate \fIexpression2\fP if the value of
+\fIexpression1\fP is sufficient to determine the return value of
+the entire conditional expression.
+.RE
+.TP
+\fBfor\fP \fIname\fP [ [ \fBin\fP [ \fIword ...\fP ] ] ; ] \fBdo\fP \fIlist\fP ; \fBdone\fP
+The list of words following \fBin\fP is expanded, generating a list
+of items.
+The variable \fIname\fP is set to each element of this list
+in turn, and \fIlist\fP is executed each time.
+If the \fBin\fP \fIword\fP is omitted, the \fBfor\fP command executes
+\fIlist\fP once for each positional parameter that is set (see
+.SM
+.B PARAMETERS
+below).
+The return status is the exit status of the last command that executes.
+If the expansion of the items following \fBin\fP results in an empty
+list, no commands are executed, and the return status is 0.
+.TP
+\fBfor\fP (( \fIexpr1\fP ; \fIexpr2\fP ; \fIexpr3\fP )) ; \fBdo\fP \fIlist\fP ; \fBdone\fP
+First, the arithmetic expression \fIexpr1\fP is evaluated according
+to the rules described below under
+.SM
+.BR "ARITHMETIC EVALUATION" .
+The arithmetic expression \fIexpr2\fP is then evaluated repeatedly
+until it evaluates to zero.
+Each time \fIexpr2\fP evaluates to a non-zero value, \fIlist\fP is
+executed and the arithmetic expression \fIexpr3\fP is evaluated.
+If any expression is omitted, it behaves as if it evaluates to 1.
+The return value is the exit status of the last command in \fIlist\fP
+that is executed, or false if any of the expressions is invalid.
+.TP
+\fBselect\fP \fIname\fP [ \fBin\fP \fIword\fP ] ; \fBdo\fP \fIlist\fP ; \fBdone\fP
+The list of words following \fBin\fP is expanded, generating a list
+of items.  The set of expanded words is printed on the standard
+error, each preceded by a number.  If the \fBin\fP
+\fIword\fP is omitted, the positional parameters are printed (see
+.SM
+.B PARAMETERS
+below).  The
+.SM
+.B PS3
+prompt is then displayed and a line read from the standard input.
+If the line consists of a number corresponding to one of
+the displayed words, then the value of
+.I name
+is set to that word.  If the line is empty, the words and prompt
+are displayed again.  If EOF is read, the command completes.  Any
+other value read causes
+.I name
+to be set to null.  The line read is saved in the variable
+.SM
+.BR REPLY .
+The
+.I list
+is executed after each selection until a
+.B break
+command is executed.
+The exit status of
+.B select
+is the exit status of the last command executed in
+.IR list ,
+or zero if no commands were executed.
+.TP
+\fBcase\fP \fIword\fP \fBin\fP [ [(] \fIpattern\fP [ \fB|\fP \fIpattern\fP ] \
+... ) \fIlist\fP ;; ] ... \fBesac\fP
+A \fBcase\fP command first expands \fIword\fP, and tries to match
+it against each \fIpattern\fP in turn, using the same matching rules
+as for pathname expansion (see
+.B Pathname Expansion
+below).
+The \fIword\fP is expanded using tilde
+expansion, parameter and variable expansion, arithmetic substitution,
+command substitution, process substitution and quote removal.
+Each \fIpattern\fP examined is expanded using tilde
+expansion, parameter and variable expansion, arithmetic substitution,
+command substitution, and process substitution.
+If the shell option
+.B nocasematch
+is enabled, the match is performed without regard to the case
+of alphabetic characters.
+When a match is found, the corresponding \fIlist\fP is executed.
+If the \fB;;\fP operator is used, no subsequent matches are attempted after
+the first pattern match.
+Using \fB;&\fP in place of \fB;;\fP causes execution to continue with
+the \fIlist\fP associated with the next set of patterns.
+Using \fB;;&\fP in place of \fB;;\fP causes the shell to test the next
+pattern list in the statement, if any, and execute any associated \fIlist\fP
+on a successful match.
+The exit status is zero if no
+pattern matches.  Otherwise, it is the exit status of the
+last command executed in \fIlist\fP.
+.TP
+\fBif\fP \fIlist\fP; \fBthen\fP \fIlist;\fP \
+[ \fBelif\fP \fIlist\fP; \fBthen\fP \fIlist\fP; ] ... \
+[ \fBelse\fP \fIlist\fP; ] \fBfi\fP
+The
+.B if 
+.I list
+is executed.  If its exit status is zero, the
+\fBthen\fP \fIlist\fP is executed.  Otherwise, each \fBelif\fP
+\fIlist\fP is executed in turn, and if its exit status is zero,
+the corresponding \fBthen\fP \fIlist\fP is executed and the
+command completes.  Otherwise, the \fBelse\fP \fIlist\fP is
+executed, if present.  The exit status is the exit status of the
+last command executed, or zero if no condition tested true.
+.TP
+\fBwhile\fP \fIlist-1\fP; \fBdo\fP \fIlist-2\fP; \fBdone\fP
+.PD 0
+.TP
+\fBuntil\fP \fIlist-1\fP; \fBdo\fP \fIlist-2\fP; \fBdone\fP
+.PD
+The \fBwhile\fP command continuously executes the list
+\fIlist-2\fP as long as the last command in the list \fIlist-1\fP returns
+an exit status of zero.  The \fBuntil\fP command is identical
+to the \fBwhile\fP command, except that the test is negated;
+.I list-2
+is executed as long as the last command in
+.I list-1
+returns a non-zero exit status.
+The exit status of the \fBwhile\fP and \fBuntil\fP commands
+is the exit status
+of the last command executed in \fIlist-2\fP, or zero if
+none was executed.
+.SS Coprocesses
+.PP
+A \fIcoprocess\fP is a shell command preceded by the \fBcoproc\fP reserved
+word.
+A coprocess is executed asynchronously in a subshell, as if the command
+had been terminated with the \fB&\fP control operator, with a two-way pipe
+established between the executing shell and the coprocess.
+.PP
+The format for a coprocess is:
+.RS
+.PP
+\fBcoproc\fP [\fINAME\fP] \fIcommand\fP [\fIredirections\fP]
+.RE
+.PP
+This creates a coprocess named \fINAME\fP.
+If \fINAME\fP is not supplied, the default name is \fBCOPROC\fP.
+\fINAME\fP must not be supplied if \fIcommand\fP is a \fIsimple
+command\fP (see above); otherwise, it is interpreted as the first word
+of the simple command.
+When the coprocess is executed, the shell creates an array variable (see
+.B Arrays
+below) named \fINAME\fP in the context of the executing shell.
+The standard output of
+.I command
+is connected via a pipe to a file descriptor in the executing shell,
+and that file descriptor is assigned to \fINAME\fP[0].
+The standard input of
+.I command
+is connected via a pipe to a file descriptor in the executing shell,
+and that file descriptor is assigned to \fINAME\fP[1].
+This pipe is established before any redirections specified by the
+command (see
+.SM
+.B REDIRECTION
+below).
+The file descriptors can be utilized as arguments to shell commands
+and redirections using standard word expansions.
+The file descriptors are not available in subshells.
+The process ID of the shell spawned to execute the coprocess is
+available as the value of the variable \fINAME\fP_PID.
+The \fBwait\fP
+builtin command may be used to wait for the coprocess to terminate.
+.PP
+Since the coprocess is created as an asynchronous command,
+the \fBcoproc\fP command always returns success.
+The return status of a coprocess is the exit status of \fIcommand\fP.
+.SS Shell Function Definitions
+.PP
+A shell function is an object that is called like a simple command and
+executes a compound command with a new set of positional parameters.
+Shell functions are declared as follows:
+.TP
+\fIname\fP () \fIcompound\-command\fP [\fIredirection\fP]
+.PD 0
+.TP
+\fBfunction\fP \fIname\fP [()] \fIcompound\-command\fP [\fIredirection\fP]
+.PD
+This defines a function named \fIname\fP.
+The reserved word \fBfunction\fP is optional.
+If the \fBfunction\fP reserved word is supplied, the parentheses are optional.
+The \fIbody\fP of the function is the compound command
+.I compound\-command 
+(see \fBCompound Commands\fP above).
+That command is usually a \fIlist\fP of commands between { and }, but
+may be any command listed under \fBCompound Commands\fP above.
+\fIcompound\-command\fP is executed whenever \fIname\fP is specified as the
+name of a simple command.
+When in \fIposix mode\fP, \fIname\fP may not be the name of one of the
+POSIX \fIspecial builtins\fP.
+Any redirections (see
+.SM
+.B REDIRECTION
+below) specified when a function is defined are performed
+when the function is executed.
+The exit status of a function definition is zero unless a syntax error
+occurs or a readonly function with the same name already exists.
+When executed, the exit status of a function is the exit status of the
+last command executed in the body.  (See
+.SM
+.B FUNCTIONS
+below.)
+.SH COMMENTS
+In a non-interactive shell, or an interactive shell in which the
+.B interactive_comments
+option to the
+.B shopt
+builtin is enabled (see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below), a word beginning with
+.B #
+causes that word and all remaining characters on that line to
+be ignored.  An interactive shell without the
+.B interactive_comments
+option enabled does not allow comments.  The
+.B interactive_comments
+option is on by default in interactive shells.
+.SH QUOTING
+\fIQuoting\fP is used to remove the special meaning of certain
+characters or words to the shell.  Quoting can be used to 
+disable special treatment for special characters, to prevent
+reserved words from being recognized as such, and to prevent
+parameter expansion.
+.PP
+Each of the \fImetacharacters\fP listed above under
+.SM
+.B DEFINITIONS
+has special meaning to the shell and must be quoted if it is to
+represent itself.
+.PP
+When the command history expansion facilities are being used
+(see
+.SM
+.B HISTORY EXPANSION
+below), the
+\fIhistory expansion\fP character, usually \fB!\fP, must be quoted
+to prevent history expansion.
+.PP
+There are three quoting mechanisms: the
+.IR "escape character" ,
+single quotes, and double quotes.
+.PP
+A non-quoted backslash (\fB\e\fP) is the
+.IR "escape character" .
+It preserves the literal value of the next character that follows,
+with the exception of <newline>.  If a \fB\e\fP<newline> pair
+appears, and the backslash is not itself quoted, the \fB\e\fP<newline>
+is treated as a line continuation (that is, it is removed from the
+input stream and effectively ignored).
+.PP
+Enclosing characters in single quotes preserves the literal value
+of each character within the quotes.  A single quote may not occur
+between single quotes, even when preceded by a backslash.
+.PP
+Enclosing characters in double quotes preserves the literal value
+of all characters within the quotes, with the exception of
+.BR $ ,
+.BR \` ,
+.BR \e ,
+and, when history expansion is enabled,
+.BR ! .
+The characters
+.B $
+and
+.B \`
+retain their special meaning within double quotes.  The backslash
+retains its special meaning only when followed by one of the following
+characters:
+.BR $ ,
+.BR \` ,
+\^\fB"\fP\^,
+.BR \e ,
+or
+.BR <newline> .
+A double quote may be quoted within double quotes by preceding it with
+a backslash.
+If enabled, history expansion will be performed unless an
+.B !
+appearing in double quotes is escaped using a backslash.
+The backslash preceding the
+.B !
+is not removed.
+.PP
+The special parameters
+.B *
+and
+.B @
+have special meaning when in double
+quotes (see
+.SM
+.B PARAMETERS
+below).
+.PP
+Words of the form \fB$\fP\(aq\fIstring\fP\(aq are treated specially.  The
+word expands to \fIstring\fP, with backslash-escaped characters replaced
+as specified by the ANSI C standard.  Backslash escape sequences, if
+present, are decoded as follows:
+.RS
+.PD 0
+.TP
+.B \ea
+alert (bell)
+.TP
+.B \eb
+backspace
+.TP
+.B \ee
+.TP
+.B \eE
+an escape character
+.TP   
+.B \ef
+form feed
+.TP  
+.B \en
+new line
+.TP     
+.B \er
+carriage return
+.TP
+.B \et
+horizontal tab
+.TP   
+.B \ev
+vertical tab
+.TP
+.B \e\e
+backslash
+.TP
+.B \e\(aq
+single quote
+.TP
+.B \e\(dq
+double quote
+.TP   
+.B \e\fInnn\fP
+the eight-bit character whose value is the octal value \fInnn\fP
+(one to three digits)
+.TP
+.B \ex\fIHH\fP
+the eight-bit character whose value is the hexadecimal value \fIHH\fP
+(one or two hex digits)
+.TP
+.B \eu\fIHHHH\fP
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+\fIHHHH\fP (one to four hex digits)
+.TP
+.B \eU\fIHHHHHHHH\fP
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+\fIHHHHHHHH\fP (one to eight hex digits)
+.TP
+.B \ec\fIx\fP
+a control-\fIx\fP character
+.PD
+.RE
+.LP
+The expanded result is single-quoted, as if the dollar sign had
+not been present.
+.PP
+A double-quoted string preceded by a dollar sign (\fB$\fP\(dq\fIstring\fP\(dq)
+will cause the string to be translated according to the current locale.
+If the current locale is \fBC\fP or \fBPOSIX\fP, the dollar sign
+is ignored.
+If the string is translated and replaced, the replacement is
+double-quoted.
+.SH PARAMETERS
+A
+.I parameter
+is an entity that stores values.
+It can be a
+.IR name ,
+a number, or one of the special characters listed below under
+.BR "Special Parameters" .
+A
+.I variable
+is a parameter denoted by a
+.IR name .
+A variable has a \fIvalue\fP and zero or more \fIattributes\fP.
+Attributes are assigned using the
+.B declare
+builtin command (see
+.B declare
+below in
+.SM
+.BR "SHELL BUILTIN COMMANDS" ).
+.PP
+A parameter is set if it has been assigned a value.  The null string is
+a valid value.  Once a variable is set, it may be unset only by using
+the
+.B unset
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.PP
+A
+.I variable
+may be assigned to by a statement of the form
+.RS
+.PP
+\fIname\fP=[\fIvalue\fP]
+.RE
+.PP
+If
+.I value
+is not given, the variable is assigned the null string.  All
+.I values
+undergo tilde expansion, parameter and variable expansion,
+command substitution, arithmetic expansion, and quote
+removal (see
+.SM
+.B EXPANSION
+below).  If the variable has its
+.B integer
+attribute set, then
+.I value
+is evaluated as an arithmetic expression even if the $((...)) expansion is
+not used (see
+.B "Arithmetic Expansion"
+below).
+Word splitting is not performed, with the exception
+of \fB"$@"\fP as explained below under
+.BR "Special Parameters" .
+Pathname expansion is not performed.
+Assignment statements may also appear as arguments to the
+.BR alias ,
+.BR declare ,
+.BR typeset ,
+.BR export ,
+.BR readonly ,
+and
+.B local
+builtin commands.
+When in \fIposix mode\fP, these builtins may appear in a command after
+one or more instances of the \fBcommand\fP builtin and retain these
+assignment statement properties.
+.PP
+In the context where an assignment statement is assigning a value
+to a shell variable or array index, the += operator can be used to
+append to or add to the variable's previous value.
+When += is applied to a variable for which the \fIinteger\fP attribute has been
+set, \fIvalue\fP is evaluated as an arithmetic expression and added to the
+variable's current value, which is also evaluated.
+When += is applied to an array variable using compound assignment (see
+.B Arrays
+below), the
+variable's value is not unset (as it is when using =), and new values are
+appended to the array beginning at one greater than the array's maximum index
+(for indexed arrays) or added as additional key\-value pairs in an
+associative array.
+When applied to a string-valued variable, \fIvalue\fP is expanded and
+appended to the variable's value.
+.PP
+A variable can be assigned the \fInameref\fP attribute using the
+\fB\-n\fP option to the \fBdeclare\fP or \fBlocal\fP builtin commands
+(see the descriptions of \fBdeclare\fP and \fBlocal\fP below)
+to create a \fInameref\fP, or a reference to another variable.
+This allows variables to be manipulated indirectly.
+Whenever the nameref variable is referenced or assigned to, the operation
+is actually performed on the variable specified by the nameref variable's
+value.
+A nameref is commonly used within shell functions to refer to a variable
+whose name is passed as an argument to the function.
+For instance, if a variable name is passed to a shell function as its first
+argument, running
+.sp .5
+.RS
+.if t \f(CWdeclare -n ref=$1\fP
+.if n declare -n ref=$1
+.RE
+.sp .5
+inside the function creates a nameref variable \fBref\fP whose value is
+the variable name passed as the first argument.
+References and assignments to \fBref\fP are treated as references and
+assignments to the variable whose name was passed as \fB$1\fP.
+If the control variable in a \fBfor\fP loop has the nameref attribute,
+the list of words can be a list of shell variables, and a name reference
+will be established for each word in the list, in turn, when the loop is
+executed.
+Array variables cannot be given the \fB\-n\fP attribute.
+However, nameref variables can reference array variables and subscripted
+array variables.
+Namerefs can be unset using the \fB\-n\fP option to the \fBunset\fP builtin.
+Otherwise, if \fBunset\fP is executed with the name of a nameref variable
+as an argument, the variable referenced by the nameref variable will be unset.
+.SS Positional Parameters
+.PP
+A
+.I positional parameter
+is a parameter denoted by one or more
+digits, other than the single digit 0.  Positional parameters are
+assigned from the shell's arguments when it is invoked,
+and may be reassigned using the
+.B set
+builtin command.  Positional parameters may not be assigned to
+with assignment statements.  The positional parameters are
+temporarily replaced when a shell function is executed (see
+.SM
+.B FUNCTIONS
+below).
+.PP
+When a positional parameter consisting of more than a single
+digit is expanded, it must be enclosed in braces (see
+.SM
+.B EXPANSION
+below).
+.SS Special Parameters
+.PP
+The shell treats several parameters specially.  These parameters may
+only be referenced; assignment to them is not allowed.
+.PD 0
+.TP
+.B *
+Expands to the positional parameters, starting from one.  When the
+expansion occurs within double quotes, it expands to a single word
+with the value of each parameter separated by the first character
+of the 
+.SM
+.B IFS
+special variable.  That is, "\fB$*\fP" is equivalent
+to "\fB$1\fP\fIc\fP\fB$2\fP\fIc\fP\fB...\fP", where
+.I c
+is the first character of the value of the
+.SM
+.B IFS
+variable.  If
+.SM
+.B IFS
+is unset, the parameters are separated by spaces.
+If
+.SM
+.B IFS
+is null, the parameters are joined without intervening separators.
+.TP
+.B @
+Expands to the positional parameters, starting from one.  When the
+expansion occurs within double quotes, each parameter expands to a
+separate word.  That is, "\fB$@\fP" is equivalent to
+"\fB$1\fP" "\fB$2\fP" ...
+If the double-quoted expansion occurs within a word, the expansion of
+the first parameter is joined with the beginning part of the original
+word, and the expansion of the last parameter is joined with the last
+part of the original word.
+When there are no positional parameters, "\fB$@\fP" and 
+.B $@
+expand to nothing (i.e., they are removed).
+.TP
+.B #
+Expands to the number of positional parameters in decimal.
+.TP
+.B ?
+Expands to the exit status of the most recently executed foreground
+pipeline.
+.TP
+.B \-
+Expands to the current option flags as specified upon invocation, 
+by the
+.B set
+builtin command, or those set by the shell itself
+(such as the
+.B \-i
+option).
+.TP
+.B $
+Expands to the process ID of the shell.  In a () subshell, it
+expands to the process ID of the current shell, not the
+subshell.
+.TP
+.B !
+Expands to the process ID of the most recently executed background
+(asynchronous) command.
+.TP
+.B 0
+Expands to the name of the shell or shell script.  This is set at
+shell initialization.  If
+.B bash
+is invoked with a file of commands,
+.B $0
+is set to the name of that file.  If
+.B bash
+is started with the
+.B \-c
+option, then
+.B $0
+is set to the first argument after the string to be
+executed, if one is present.  Otherwise, it is set
+to the filename used to invoke
+.BR bash ,
+as given by argument zero.
+.TP
+.B _
+At shell startup, set to the absolute pathname used to invoke the
+shell or shell script being executed as passed in the environment
+or argument list.
+Subsequently, expands to the last argument to the previous command,
+after expansion.
+Also set to the full pathname used to invoke each command executed
+and placed in the environment exported to that command.
+When checking mail, this parameter holds the name of the mail file
+currently being checked.
+.PD
+.SS Shell Variables
+.PP
+The following variables are set by the shell:
+.PP
+.PD 0
+.TP
+.B BASH
+Expands to the full filename used to invoke this instance of
+.BR bash .
+.TP
+.B BASHOPTS
+A colon-separated list of enabled shell options.  Each word in
+the list is a valid argument for the
+.B \-s
+option to the
+.B shopt
+builtin command (see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).  The options appearing in
+.SM
+.B BASHOPTS
+are those reported as
+.I on
+by \fBshopt\fP.
+If this variable is in the environment when
+.B bash
+starts up, each shell option in the list will be enabled before
+reading any startup files.
+This variable is read-only.
+.TP
+.B BASHPID
+Expands to the process ID of the current \fBbash\fP process.
+This differs from \fB$$\fP under certain circumstances, such as subshells
+that do not require \fBbash\fP to be re-initialized.
+.TP
+.B BASH_ALIASES
+An associative array variable whose members correspond to the internal
+list of aliases as maintained by the \fBalias\fP builtin.
+Elements added to this array appear in the alias list; unsetting array
+elements cause aliases to be removed from the alias list.
+.TP
+.B BASH_ARGC
+An array variable whose values are the number of parameters in each
+frame of the current \fBbash\fP execution call stack.
+The number of
+parameters to the current subroutine (shell function or script executed
+with \fB.\fP or \fBsource\fP) is at the top of the stack.
+When a subroutine is executed, the number of parameters passed is pushed onto
+.SM
+.BR BASH_ARGC .
+The shell sets
+.SM
+.B BASH_ARGC
+only when in extended debugging mode (see the description of the
+.B extdebug
+option to the
+.B shopt
+builtin below)
+.TP
+.B BASH_ARGV
+An array variable containing all of the parameters in the current \fBbash\fP
+execution call stack.  The final parameter of the last subroutine call
+is at the top of the stack; the first parameter of the initial call is
+at the bottom.  When a subroutine is executed, the parameters supplied
+are pushed onto
+.SM
+.BR BASH_ARGV .
+The shell sets
+.SM
+.B BASH_ARGV
+only when in extended debugging mode
+(see the description of the
+.B extdebug
+option to the
+.B shopt
+builtin below)
+.TP
+.B BASH_CMDS
+An associative array variable whose members correspond to the internal
+hash table of commands as maintained by the \fBhash\fP builtin.
+Elements added to this array appear in the hash table; unsetting array
+elements cause commands to be removed from the hash table.
+.TP
+.B BASH_COMMAND
+The command currently being executed or about to be executed, unless the
+shell is executing a command as the result of a trap,
+in which case it is the command executing at the time of the trap.
+.TP
+.B BASH_EXECUTION_STRING
+The command argument to the \fB\-c\fP invocation option.
+.TP
+.B BASH_LINENO
+An array variable whose members are the line numbers in source files
+where each corresponding member of
+.SM
+.B FUNCNAME
+was invoked.
+\fB${BASH_LINENO[\fP\fI$i\fP\fB]}\fP is the line number in the source
+file (\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP) where
+\fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP was called
+(or \fB${BASH_LINENO[\fP\fI$i-1\fP\fB]}\fP if referenced within another
+shell function).
+Use
+.SM
+.B LINENO
+to obtain the current line number.
+.TP
+.B BASH_REMATCH
+An array variable whose members are assigned by the \fB=~\fP binary
+operator to the \fB[[\fP conditional command.
+The element with index 0 is the portion of the string
+matching the entire regular expression.
+The element with index \fIn\fP is the portion of the
+string matching the \fIn\fPth parenthesized subexpression.
+This variable is read-only.
+.TP
+.B BASH_SOURCE
+An array variable whose members are the source filenames
+where the corresponding shell function names in the
+.SM
+.B FUNCNAME
+array variable are defined.
+The shell function
+\fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP is defined in the file
+\fB${BASH_SOURCE[\fP\fI$i\fP\fB]}\fP and called from
+\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP.
+.TP
+.B BASH_SUBSHELL
+Incremented by one within each subshell or subshell environment when
+the shell begins executing in that environment.
+The initial value is 0.
+.TP
+.B BASH_VERSINFO
+A readonly array variable whose members hold version information for
+this instance of
+.BR bash .
+The values assigned to the array members are as follows:
+.sp .5
+.RS
+.TP 24
+.B BASH_VERSINFO[\fR0\fP]
+The major version number (the \fIrelease\fP).
+.TP
+.B BASH_VERSINFO[\fR1\fP]
+The minor version number (the \fIversion\fP).
+.TP
+.B BASH_VERSINFO[\fR2\fP]
+The patch level.
+.TP
+.B BASH_VERSINFO[\fR3\fP]
+The build version.
+.TP
+.B BASH_VERSINFO[\fR4\fP]
+The release status (e.g., \fIbeta1\fP).
+.TP
+.B BASH_VERSINFO[\fR5\fP]
+The value of
+.SM
+.BR MACHTYPE .
+.RE
+.TP
+.B BASH_VERSION
+Expands to a string describing the version of this instance of
+.BR bash .
+.TP
+.B COMP_CWORD
+An index into \fB${COMP_WORDS}\fP of the word containing the current
+cursor position.
+This variable is available only in shell functions invoked by the
+programmable completion facilities (see \fBProgrammable Completion\fP
+below).
+.TP
+.B COMP_KEY
+The key (or final key of a key sequence) used to invoke the current
+completion function.
+.TP
+.B COMP_LINE
+The current command line.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (see \fBProgrammable Completion\fP
+below).
+.TP
+.B COMP_POINT
+The index of the current cursor position relative to the beginning of
+the current command.
+If the current cursor position is at the end of the current command,
+the value of this variable is equal to \fB${#COMP_LINE}\fP.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (see \fBProgrammable Completion\fP
+below).
+.TP
+.B COMP_TYPE
+Set to an integer value corresponding to the type of completion attempted
+that caused a completion function to be called:
+\fITAB\fP, for normal completion,
+\fI?\fP, for listing completions after successive tabs,
+\fI!\fP, for listing alternatives on partial word completion,
+\fI@\fP, to list completions if the word is not unmodified,
+or
+\fI%\fP, for menu completion.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (see \fBProgrammable Completion\fP
+below).
+.TP
+.B COMP_WORDBREAKS
+The set of characters that the \fBreadline\fP library treats as word
+separators when performing word completion.
+If
+.SM
+.B COMP_WORDBREAKS
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B COMP_WORDS
+An array variable (see \fBArrays\fP below) consisting of the individual
+words in the current command line.
+The line is split into words as \fBreadline\fP would split it, using
+.SM
+.B COMP_WORDBREAKS
+as described above.
+This variable is available only in shell functions invoked by the
+programmable completion facilities (see \fBProgrammable Completion\fP
+below).
+.TP
+.B COPROC
+An array variable (see \fBArrays\fP below) created to hold the file descriptors
+for output from and input to an unnamed coprocess (see \fBCoprocesses\fP
+above).
+.TP
+.B DIRSTACK
+An array variable (see
+.B Arrays
+below) containing the current contents of the directory stack.
+Directories appear in the stack in the order they are displayed by the
+.B dirs
+builtin.
+Assigning to members of this array variable may be used to modify
+directories already in the stack, but the
+.B pushd
+and
+.B popd
+builtins must be used to add and remove directories.
+Assignment to this variable will not change the current directory.
+If
+.SM
+.B DIRSTACK
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B EUID
+Expands to the effective user ID of the current user, initialized at
+shell startup.  This variable is readonly.
+.TP
+.B FUNCNAME
+An array variable containing the names of all shell functions
+currently in the execution call stack.
+The element with index 0 is the name of any currently-executing
+shell function.
+The bottom-most element (the one with the highest index) is
+.if t \f(CW"main"\fP.
+.if n "main".
+This variable exists only when a shell function is executing.
+Assignments to
+.SM
+.B FUNCNAME
+have no effect and return an error status.
+If
+.SM
+.B FUNCNAME
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.if t .sp 0.5
+.if n .sp 1
+This variable can be used with \fBBASH_LINENO\fP and \fBBASH_SOURCE\fP.
+Each element of \fBFUNCNAME\fP has corresponding elements in
+\fBBASH_LINENO\fP and \fBBASH_SOURCE\fP to describe the call stack.
+For instance, \fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP was called from the file
+\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP at line number
+\fB${BASH_LINENO[\fP\fI$i\fP\fB]}\fP.
+The \fBcaller\fP builtin displays the current call stack using this
+information.
+.TP
+.B GROUPS
+An array variable containing the list of groups of which the current
+user is a member.
+Assignments to    
+.SM
+.B GROUPS
+have no effect and return an error status.
+If
+.SM
+.B GROUPS
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B HISTCMD
+The history number, or index in the history list, of the current
+command.
+If
+.SM
+.B HISTCMD
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B HOSTNAME
+Automatically set to the name of the current host.
+.TP
+.B HOSTTYPE
+Automatically set to a string that uniquely
+describes the type of machine on which
+.B bash
+is executing.
+The default is system-dependent.
+.TP
+.B LINENO
+Each time this parameter is referenced, the shell substitutes
+a decimal number representing the current sequential line number
+(starting with 1) within a script or function.  When not in a
+script or function, the value substituted is not guaranteed to
+be meaningful.
+If
+.SM
+.B LINENO
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B MACHTYPE
+Automatically set to a string that fully describes the system
+type on which
+.B bash
+is executing, in the standard GNU \fIcpu-company-system\fP format.
+The default is system-dependent.
+.TP
+.B MAPFILE
+An array variable (see \fBArrays\fP below) created to hold the text
+read by the \fBmapfile\fP builtin when no variable name is supplied.
+.TP
+.B OLDPWD
+The previous working directory as set by the
+.B cd
+command.
+.TP
+.B OPTARG
+The value of the last option argument processed by the
+.B getopts
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.TP
+.B OPTIND
+The index of the next argument to be processed by the
+.B getopts
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.TP
+.B OSTYPE
+Automatically set to a string that
+describes the operating system on which
+.B bash
+is executing.
+The default is system-dependent.
+.TP
+.B PIPESTATUS
+An array variable (see
+.B Arrays
+below) containing a list of exit status values from the processes
+in the most-recently-executed foreground pipeline (which may
+contain only a single command).
+.TP
+.B PPID
+The process ID of the shell's parent.  This variable is readonly.
+.TP
+.B PWD
+The current working directory as set by the
+.B cd
+command.
+.TP
+.B RANDOM
+Each time this parameter is referenced, a random integer between
+0 and 32767 is
+generated.  The sequence of random numbers may be initialized by assigning
+a value to
+.SM
+.BR RANDOM .
+If
+.SM
+.B RANDOM
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B READLINE_LINE
+The contents of the
+.B readline
+line buffer, for use with
+.if t \f(CWbind -x\fP
+.if n "bind -x"
+(see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).
+.TP
+.B READLINE_POINT
+The position of the insertion point in the
+.B readline
+line buffer, for use with
+.if t \f(CWbind -x\fP
+.if n "bind -x"
+(see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).
+.TP
+.B REPLY
+Set to the line of input read by the
+.B read
+builtin command when no arguments are supplied.
+.TP
+.B SECONDS
+Each time this parameter is
+referenced, the number of seconds since shell invocation is returned.  If a
+value is assigned to 
+.SM
+.BR SECONDS ,
+the value returned upon subsequent
+references is
+the number of seconds since the assignment plus the value assigned.
+If
+.SM
+.B SECONDS
+is unset, it loses its special properties, even if it is
+subsequently reset.
+.TP
+.B SHELLOPTS
+A colon-separated list of enabled shell options.  Each word in
+the list is a valid argument for the
+.B \-o
+option to the
+.B set
+builtin command (see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).  The options appearing in
+.SM
+.B SHELLOPTS
+are those reported as
+.I on
+by \fBset \-o\fP.
+If this variable is in the environment when
+.B bash
+starts up, each shell option in the list will be enabled before
+reading any startup files.
+This variable is read-only.
+.TP
+.B SHLVL
+Incremented by one each time an instance of
+.B bash
+is started.
+.TP
+.B UID
+Expands to the user ID of the current user, initialized at shell startup.
+This variable is readonly.
+.PD
+.PP
+The following variables are used by the shell.  In some cases,
+.B bash
+assigns a default value to a variable; these cases are noted
+below.
+.PP
+.PD 0
+.TP
+.B BASH_COMPAT
+The value is used to set the shell's compatibility level.
+See the description of the \fBshopt\fB builtin below under
+\fBSHELL BUILTIN COMMANDS\fP  for a description of the various compatibility
+levels and their effects.
+The value may be a decimal number (e.g., 4.2) or an integer (e.g., 42)
+corresponding to the desired compatibility level.
+If \fBBASH_COMPAT\fP is unset or set to the empty string, the compatibility
+level is set to the default for the current version.
+If \fBBASH_COMPAT\fP is set to a value that is not one of the valid
+compatibility levels, the shell prints an error message and sets the
+compatibility level to the default for the current version.
+The valid compatibility levels correspond to the compatibility options
+accepted by the \fBshopt\fP builtin described below (for example,
+\fBcompat42\fP means that 4.2 and 42 are valid values).
+The current version is also a valid value.
+.TP
+.B BASH_ENV
+If this parameter is set when \fBbash\fP is executing a shell script,
+its value is interpreted as a filename containing commands to
+initialize the shell, as in
+.IR ~/.bashrc .
+The value of
+.SM
+.B BASH_ENV
+is subjected to parameter expansion, command substitution, and arithmetic
+expansion before being interpreted as a filename.
+.SM
+.B PATH
+is not used to search for the resultant filename.
+.TP
+.B BASH_XTRACEFD
+If set to an integer corresponding to a valid file descriptor, \fBbash\fP
+will write the trace output generated when
+.if t \f(CWset -x\fP
+.if n \fIset -x\fP
+is enabled to that file descriptor.
+The file descriptor is closed when
+.SM
+.B BASH_XTRACEFD
+is unset or assigned a new value.
+Unsetting
+.SM
+.B BASH_XTRACEFD
+or assigning it the empty string causes the
+trace output to be sent to the standard error.
+Note that setting
+.SM
+.B BASH_XTRACEFD
+to 2 (the standard error file
+descriptor) and then unsetting it will result in the standard error
+being closed.
+.TP
+.B CDPATH
+The search path for the
+.B cd
+command.
+This is a colon-separated list of directories in which the shell looks
+for destination directories specified by the
+.B cd
+command.
+A sample value is
+.if t \f(CW".:~:/usr"\fP.
+.if n ".:~:/usr".
+.TP
+.B CHILD_MAX
+Set the number of exited child status values for the shell to remember.
+Bash will not allow this value to be decreased below a POSIX-mandated
+minimum, and there is a maximum value (currently 8192) that this may
+not exceed.
+The minimum value is system-dependent.
+.TP
+.B COLUMNS
+Used by the \fBselect\fP compound command to determine the terminal width
+when printing selection lists.
+Automatically set if the
+.B checkwinsize
+option is enabled or in an interactive shell upon receipt of a
+.SM
+.BR SIGWINCH .
+.TP
+.B COMPREPLY
+An array variable from which \fBbash\fP reads the possible completions
+generated by a shell function invoked by the programmable completion
+facility (see \fBProgrammable Completion\fP below).
+Each array element contains one possible completion.
+.TP
+.B EMACS
+If \fBbash\fP finds this variable in the environment when the shell starts
+with value
+.if t \f(CWt\fP,
+.if n "t",
+it assumes that the shell is running in an Emacs shell buffer and disables
+line editing.
+.TP
+.B ENV
+Similar to
+.SM
+.BR BASH_ENV ;
+used when the shell is invoked in POSIX mode.
+.TP
+.B FCEDIT
+The default editor for the
+.B fc
+builtin command.
+.TP
+.B FIGNORE
+A colon-separated list of suffixes to ignore when performing
+filename completion (see
+.SM
+.B READLINE
+below).
+A filename whose suffix matches one of the entries in 
+.SM
+.B FIGNORE
+is excluded from the list of matched filenames.
+A sample value is
+.if t \f(CW".o:~"\fP.
+.if n ".o:~".
+.TP
+.B FUNCNEST
+If set to a numeric value greater than 0, defines a maximum function
+nesting level.  Function invocations that exceed this nesting level
+will cause the current command to abort.
+.TP
+.B GLOBIGNORE
+A colon-separated list of patterns defining the set of filenames to
+be ignored by pathname expansion.
+If a filename matched by a pathname expansion pattern also matches one
+of the patterns in
+.SM
+.BR GLOBIGNORE ,
+it is removed from the list of matches.
+.TP
+.B HISTCONTROL
+A colon-separated list of values controlling how commands are saved on
+the history list.
+If the list of values includes
+.IR ignorespace ,
+lines which begin with a
+.B space
+character are not saved in the history list.
+A value of 
+.I ignoredups
+causes lines matching the previous history entry to not be saved.
+A value of
+.I ignoreboth
+is shorthand for \fIignorespace\fP and \fIignoredups\fP.
+A value of
+.IR erasedups
+causes all previous lines matching the current line to be removed from
+the history list before that line is saved.
+Any value not in the above list is ignored.
+If
+.SM
+.B HISTCONTROL
+is unset, or does not include a valid value,
+all lines read by the shell parser are saved on the history list,
+subject to the value of
+.SM
+.BR HISTIGNORE .
+The second and subsequent lines of a multi-line compound command are
+not tested, and are added to the history regardless of the value of
+.SM
+.BR HISTCONTROL .
+.TP
+.B HISTFILE
+The name of the file in which command history is saved (see
+.SM
+.B HISTORY
+below).  The default value is \fI~/.bash_history\fP.  If unset, the
+command history is not saved when a shell exits.
+.TP
+.B HISTFILESIZE
+The maximum number of lines contained in the history file.  When this
+variable is assigned a value, the history file is truncated, if
+necessary,
+to contain no more than that number of lines by removing the oldest entries.
+The history file is also truncated to this size after
+writing it when a shell exits.
+If the value is 0, the history file is truncated to zero size.
+Non-numeric values and numeric values less than zero inhibit truncation.
+The shell sets the default value to the value of \fBHISTSIZE\fP
+after reading any startup files.
+.TP
+.B HISTIGNORE
+A colon-separated list of patterns used to decide which command lines
+should be saved on the history list.  Each pattern is anchored at the
+beginning of the line and must match the complete line (no implicit
+`\fB*\fP' is appended).  Each pattern is tested against the line
+after the checks specified by
+.SM
+.B HISTCONTROL
+are applied.
+In addition to the normal shell pattern matching characters, `\fB&\fP'
+matches the previous history line.  `\fB&\fP' may be escaped using a
+backslash; the backslash is removed before attempting a match.
+The second and subsequent lines of a multi-line compound command are
+not tested, and are added to the history regardless of the value of
+.SM
+.BR HISTIGNORE .
+.TP
+.B HISTSIZE
+The number of commands to remember in the command history (see
+.SM
+.B HISTORY
+below).
+If the value is 0, commands are not saved in the history list.
+Numeric values less than zero result in every command being saved
+on the history list (there is no limit).
+The shell sets the default value to 500 after reading any startup files.
+.TP
+.B HISTTIMEFORMAT
+If this variable is set and not null, its value is used as a format string
+for \fIstrftime\fP(3) to print the time stamp associated with each history
+entry displayed by the \fBhistory\fP builtin.
+If this variable is set, time stamps are written to the history file so
+they may be preserved across shell sessions.
+This uses the history comment character to distinguish timestamps from
+other history lines.
+.TP
+.B HOME
+The home directory of the current user; the default argument for the
+\fBcd\fP builtin command.
+The value of this variable is also used when performing tilde expansion.
+.TP
+.B HOSTFILE
+Contains the name of a file in the same format as
+.FN /etc/hosts
+that should be read when the shell needs to complete a
+hostname.
+The list of possible hostname completions may be changed while the
+shell is running;
+the next time hostname completion is attempted after the
+value is changed,
+.B bash
+adds the contents of the new file to the existing list.
+If
+.SM
+.B HOSTFILE
+is set, but has no value, or does not name a readable file,
+\fBbash\fP attempts to read
+.FN /etc/hosts
+to obtain the list of possible hostname completions.
+When
+.SM
+.B HOSTFILE
+is unset, the hostname list is cleared.
+.TP
+.B IFS
+The
+.I Internal Field Separator
+that is used
+for word splitting after expansion and to
+split lines into words with the
+.B read
+builtin command.  The default value is
+``<space><tab><newline>''.
+.TP
+.B IGNOREEOF
+Controls the
+action of an interactive shell on receipt of an
+.SM
+.B EOF
+character as the sole input.  If set, the value is the number of
+consecutive
+.SM
+.B EOF
+characters which must be
+typed as the first characters on an input line before
+.B bash
+exits.  If the variable exists but does not have a numeric value, or
+has no value, the default value is 10.  If it does not exist,
+.SM
+.B EOF
+signifies the end of input to the shell.
+.TP
+.B INPUTRC
+The filename for the
+.B readline
+startup file, overriding the default of
+.FN ~/.inputrc
+(see
+.SM
+.B READLINE
+below).
+.TP
+.B LANG
+Used to determine the locale category for any category not specifically
+selected with a variable starting with \fBLC_\fP.
+.TP
+.B LC_ALL
+This variable overrides the value of
+.SM
+.B LANG
+and any other
+\fBLC_\fP variable specifying a locale category.
+.TP
+.B LC_COLLATE
+This variable determines the collation order used when sorting the
+results of pathname expansion, and determines the behavior of range
+expressions, equivalence classes, and collating sequences within
+pathname expansion and pattern matching.
+.TP
+.B LC_CTYPE
+This variable determines the interpretation of characters and the
+behavior of character classes within pathname expansion and pattern
+matching.
+.TP
+.B LC_MESSAGES
+This variable determines the locale used to translate double-quoted
+strings preceded by a \fB$\fP.
+.TP
+.B LC_NUMERIC
+This variable determines the locale category used for number formatting.
+.TP
+.B LINES
+Used by the \fBselect\fP compound command to determine the column length
+for printing selection lists.
+Automatically set if the
+.B checkwinsize
+option is enabled or in an interactive shell upon receipt of a
+.SM
+.BR SIGWINCH .
+.TP
+.B MAIL
+If this parameter is set to a file or directory name and the
+.SM
+.B MAILPATH
+variable is not set,
+.B bash
+informs the user of the arrival of mail in the specified file or
+Maildir-format directory.
+.TP
+.B MAILCHECK
+Specifies how
+often (in seconds)
+.B bash
+checks for mail.  The default is 60 seconds.  When it is time to check
+for mail, the shell does so before displaying the primary prompt.
+If this variable is unset, or set to a value that is not a number
+greater than or equal to zero, the shell disables mail checking.
+.TP
+.B MAILPATH
+A colon-separated list of filenames to be checked for mail. 
+The message to be printed when mail arrives in a particular file
+may be specified by separating the filename from the message with a `?'.
+When used in the text of the message, \fB$_\fP expands to the name of
+the current mailfile. 
+Example:
+.RS
+.PP
+\fBMAILPATH\fP=\(aq/var/mail/bfox?"You have mail":~/shell\-mail?"$_ has mail!"\(aq
+.PP
+.B Bash
+supplies a default value for this variable, but the location of the user
+mail files that it uses is system dependent (e.g., /var/mail/\fB$USER\fP).
+.RE
+.TP
+.B OPTERR
+If set to the value 1,
+.B bash
+displays error messages generated by the
+.B getopts
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.SM
+.B OPTERR
+is initialized to 1 each time the shell is invoked or a shell
+script is executed.
+.TP
+.B PATH
+The search path for commands.  It
+is a colon-separated list of directories in which
+the shell looks for commands (see
+.SM
+.B COMMAND EXECUTION
+below).
+A zero-length (null) directory name in the value of
+.SM
+.B PATH
+indicates the current directory.
+A null directory name may appear as two adjacent colons, or as an initial
+or trailing colon.
+The default path is system-dependent,
+and is set by the administrator who installs
+.BR bash .
+A common value is
+.if t \f(CW/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin\fP.
+.if n ``/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin''.
+.TP
+.B POSIXLY_CORRECT
+If this variable is in the environment when \fBbash\fP starts, the shell
+enters \fIposix mode\fP before reading the startup files, as if the
+.B \-\-posix
+invocation option had been supplied.  If it is set while the shell is
+running, \fBbash\fP enables \fIposix mode\fP, as if the command
+.if t \f(CWset -o posix\fP
+.if n \fIset -o posix\fP
+had been executed.
+.TP
+.B PROMPT_COMMAND
+If set, the value is executed as a command prior to issuing each primary
+prompt.
+.TP
+.B PROMPT_DIRTRIM
+If set to a number greater than zero, the value is used as the number of
+trailing directory components to retain when expanding the \fB\ew\fP and
+\fB\eW\fP prompt string escapes (see
+.SM
+.B PROMPTING
+below).  Characters removed are replaced with an ellipsis.
+.TP
+.B PS1
+The value of this parameter is expanded (see
+.SM
+.B PROMPTING
+below) and used as the primary prompt string.  The default value is
+``\fB\es\-\ev\e$ \fP''.
+.TP
+.B PS2
+The value of this parameter is expanded as with
+.SM
+.B PS1
+and used as the secondary prompt string.  The default is
+``\fB> \fP''.
+.TP
+.B PS3
+The value of this parameter is used as the prompt for the
+.B select
+command (see
+.SM
+.B SHELL GRAMMAR
+above).
+.TP
+.B PS4
+The value of this parameter is expanded as with
+.SM
+.B PS1
+and the value is printed before each command
+.B bash
+displays during an execution trace.  The first character of
+.SM
+.B PS4
+is replicated multiple times, as necessary, to indicate multiple
+levels of indirection.  The default is ``\fB+ \fP''.
+.TP
+.B SHELL
+The full pathname to the shell is kept in this environment variable.
+If it is not set when the shell starts,
+.B bash
+assigns to it the full pathname of the current user's login shell.
+.TP
+.B TIMEFORMAT
+The value of this parameter is used as a format string specifying
+how the timing information for pipelines prefixed with the
+.B time
+reserved word should be displayed.
+The \fB%\fP character introduces an escape sequence that is
+expanded to a time value or other information.
+The escape sequences and their meanings are as follows; the
+braces denote optional portions.
+.sp .5
+.RS
+.PD 0
+.TP 10
+.B %%
+A literal \fB%\fP.
+.TP
+.B %[\fIp\fP][l]R
+The elapsed time in seconds.
+.TP
+.B %[\fIp\fP][l]U
+The number of CPU seconds spent in user mode.
+.TP
+.B %[\fIp\fP][l]S
+The number of CPU seconds spent in system mode.
+.TP
+.B %P
+The CPU percentage, computed as (%U + %S) / %R.
+.PD
+.RE
+.IP
+The optional \fIp\fP is a digit specifying the \fIprecision\fP,
+the number of fractional digits after a decimal point.
+A value of 0 causes no decimal point or fraction to be output.
+At most three places after the decimal point may be specified;
+values of \fIp\fP greater than 3 are changed to 3.
+If \fIp\fP is not specified, the value 3 is used.
+.IP
+The optional \fBl\fP specifies a longer format, including
+minutes, of the form \fIMM\fPm\fISS\fP.\fIFF\fPs.
+The value of \fIp\fP determines whether or not the fraction is
+included.
+.IP
+If this variable is not set, \fBbash\fP acts as if it had the
+value \fB$\(aq\enreal\et%3lR\enuser\et%3lU\ensys\e\t%3lS\(aq\fP.
+If the value is null, no timing information is displayed.
+A trailing newline is added when the format string is displayed.
+.PD 0
+.TP
+.B TMOUT
+If set to a value greater than zero,
+.SM
+.B TMOUT
+is treated as the
+default timeout for the \fBread\fP builtin.
+The \fBselect\fP command terminates if input does not arrive
+after
+.SM
+.B TMOUT
+seconds when input is coming from a terminal.
+In an interactive shell, the value is interpreted as the
+number of seconds to wait for a line of input after issuing the
+primary prompt.
+.B Bash
+terminates after waiting for that number of seconds if a complete
+line of input does not arrive.
+.TP
+.B TMPDIR
+If set, \fBbash\fP uses its value as the name of a directory in which
+\fBbash\fP creates temporary files for the shell's use.
+.TP
+.B auto_resume
+This variable controls how the shell interacts with the user and
+job control.  If this variable is set, single word simple
+commands without redirections are treated as candidates for resumption
+of an existing stopped job.  There is no ambiguity allowed; if there is
+more than one job beginning with the string typed, the job most recently
+accessed is selected.  The
+.I name
+of a stopped job, in this context, is the command line used to
+start it.
+If set to the value
+.IR exact ,
+the string supplied must match the name of a stopped job exactly;
+if set to
+.IR substring ,
+the string supplied needs to match a substring of the name of a
+stopped job.  The
+.I substring
+value provides functionality analogous to the
+.B %?
+job identifier (see
+.SM
+.B JOB CONTROL
+below).  If set to any other value, the supplied string must
+be a prefix of a stopped job's name; this provides functionality
+analogous to the \fB%\fP\fIstring\fP job identifier.
+.TP
+.B histchars
+The two or three characters which control history expansion
+and tokenization (see
+.SM
+.B HISTORY EXPANSION
+below).  The first character is the \fIhistory expansion\fP character,
+the character which signals the start of a history
+expansion, normally `\fB!\fP'.
+The second character is the \fIquick substitution\fP
+character, which is used as shorthand for re-running the previous
+command entered, substituting one string for another in the command.
+The default is `\fB^\fP'.
+The optional third character is the character
+which indicates that the remainder of the line is a comment when found
+as the first character of a word, normally `\fB#\fP'.  The history
+comment character causes history substitution to be skipped for the
+remaining words on the line.  It does not necessarily cause the shell
+parser to treat the rest of the line as a comment.
+.PD
+.SS Arrays
+.B Bash
+provides one-dimensional indexed and associative array variables.
+Any variable may be used as an indexed array; the
+.B declare
+builtin will explicitly declare an array.
+There is no maximum
+limit on the size of an array, nor any requirement that members
+be indexed or assigned contiguously.
+Indexed arrays are referenced using integers (including arithmetic
+expressions)  and are zero-based; associative arrays are referenced
+using arbitrary strings.
+Unless otherwise noted, indexed array indices must be non-negative integers.
+.PP
+An indexed array is created automatically if any variable is assigned to
+using the syntax \fIname\fP[\fIsubscript\fP]=\fIvalue\fP.  The
+.I subscript
+is treated as an arithmetic expression that must evaluate to a number.
+To explicitly declare an indexed array, use
+.B declare \-a \fIname\fP
+(see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.B declare \-a \fIname\fP[\fIsubscript\fP]
+is also accepted; the \fIsubscript\fP is ignored.
+.PP
+Associative arrays are created using
+.BR "declare \-A \fIname\fP" .
+.PP
+Attributes may be
+specified for an array variable using the
+.B declare
+and
+.B readonly
+builtins.  Each attribute applies to all members of an array.
+.PP
+Arrays are assigned to using compound assignments of the form
+\fIname\fP=\fB(\fPvalue\fI1\fP ... value\fIn\fP\fB)\fP, where each
+\fIvalue\fP is of the form [\fIsubscript\fP]=\fIstring\fP.
+Indexed array assignments do not require anything but \fIstring\fP.
+When assigning to indexed arrays, if the optional brackets and subscript
+are supplied, that index is assigned to;
+otherwise the index of the element assigned is the last index assigned
+to by the statement plus one.  Indexing starts at zero.
+.PP
+When assigning to an associative array, the subscript is required.
+.PP
+This syntax is also accepted by the
+.B declare
+builtin.  Individual array elements may be assigned to using the
+\fIname\fP[\fIsubscript\fP]=\fIvalue\fP syntax introduced above.
+When assigning to an indexed array, if
+.I name
+is subscripted by a negative number, that number is
+interpreted as relative to one greater than the maximum index of
+\fIname\fP, so negative indices count back from the end of the
+array, and an index of \-1 references the last element.
+.PP
+Any element of an array may be referenced using
+${\fIname\fP[\fIsubscript\fP]}.  The braces are required to avoid
+conflicts with pathname expansion.  If
+\fIsubscript\fP is \fB@\fP or \fB*\fP, the word expands to
+all members of \fIname\fP.  These subscripts differ only when the
+word appears within double quotes.  If the word is double-quoted,
+${\fIname\fP[*]} expands to a single
+word with the value of each array member separated by the first
+character of the
+.SM
+.B IFS
+special variable, and ${\fIname\fP[@]} expands each element of
+\fIname\fP to a separate word.  When there are no array members,
+${\fIname\fP[@]} expands to nothing.
+If the double-quoted expansion occurs within a word, the expansion of
+the first parameter is joined with the beginning part of the original
+word, and the expansion of the last parameter is joined with the last
+part of the original word.
+This is analogous to the expansion
+of the special parameters \fB*\fP and \fB@\fP (see
+.B Special Parameters
+above).  ${#\fIname\fP[\fIsubscript\fP]} expands to the length of
+${\fIname\fP[\fIsubscript\fP]}.  If \fIsubscript\fP is \fB*\fP or
+\fB@\fP, the expansion is the number of elements in the array.
+Referencing an array variable without a subscript is equivalent to
+referencing the array with a subscript of 0.
+If the
+.I subscript
+used to reference an element of an indexed array
+evaluates to a number less than zero, it is 
+interpreted as relative to one greater than the maximum index of the array,
+so negative indices count back from the end of the
+array, and an index of \-1 references the last element.
+.PP
+An array variable is considered set if a subscript has been assigned a
+value.  The null string is a valid value.
+.PP
+The
+.B unset
+builtin is used to destroy arrays.  \fBunset\fP \fIname\fP[\fIsubscript\fP]
+destroys the array element at index \fIsubscript\fP.
+Negative subscripts to indexed arrays are interpreted as described above.
+Care must be taken to avoid unwanted side effects caused by pathname
+expansion.
+\fBunset\fP \fIname\fP, where \fIname\fP is an array, or
+\fBunset\fP \fIname\fP[\fIsubscript\fP], where
+\fIsubscript\fP is \fB*\fP or \fB@\fP, removes the entire array.
+.PP
+The
+.BR declare ,
+.BR local ,
+and
+.B readonly
+builtins each accept a
+.B \-a
+option to specify an indexed array and a
+.B \-A
+option to specify an associative array.
+If both options are supplied, 
+.B \-A
+takes precedence.
+The
+.B read
+builtin accepts a
+.B \-a
+option to assign a list of words read from the standard input
+to an array.  The
+.B set
+and
+.B declare
+builtins display array values in a way that allows them to be
+reused as assignments.
+.SH EXPANSION
+Expansion is performed on the command line after it has been split into
+words.  There are seven kinds of expansion performed:
+.IR "brace expansion" ,
+.IR "tilde expansion" ,
+.IR "parameter and variable expansion" ,
+.IR "command substitution" ,
+.IR "arithmetic expansion" ,
+.IR "word splitting" ,
+and
+.IR "pathname expansion" .
+.PP
+The order of expansions is: brace expansion, tilde expansion,
+parameter, variable and arithmetic expansion and
+command substitution
+(done in a left-to-right fashion), word splitting, and pathname
+expansion.
+.PP
+On systems that can support it, there is an additional expansion
+available: \fIprocess substitution\fP.
+.PP
+Only brace expansion, word splitting, and pathname expansion
+can change the number of words of the expansion; other expansions
+expand a single word to a single word.
+The only exceptions to this are the expansions of
+"\fB$@\fP" and "\fB${\fP\fIname\fP\fB[@]}\fP"
+as explained above (see
+.SM
+.BR PARAMETERS ).
+.SS Brace Expansion
+.PP
+.I "Brace expansion"
+is a mechanism by which arbitrary strings
+may be generated.  This mechanism is similar to
+\fIpathname expansion\fP, but the filenames generated
+need not exist.  Patterns to be brace expanded take
+the form of an optional
+.IR preamble ,
+followed by either a series of comma-separated strings or
+a sequence expression between a pair of braces, followed by
+an optional
+.IR postscript .
+The preamble is prefixed to each string contained
+within the braces, and the postscript is then appended
+to each resulting string, expanding left to right.
+.PP
+Brace expansions may be nested.  The results of each expanded
+string are not sorted; left to right order is preserved.
+For example, a\fB{\fPd,c,b\fB}\fPe expands into `ade ace abe'.
+.PP
+A sequence expression takes the form
+\fB{\fP\fIx\fP\fB..\fP\fIy\fP\fB[..\fP\fIincr\fP\fB]}\fP,
+where \fIx\fP and \fIy\fP are either integers or single characters,
+and \fIincr\fP, an optional increment, is an integer.
+When integers are supplied, the expression expands to each number between
+\fIx\fP and \fIy\fP, inclusive.
+Supplied integers may be prefixed with \fI0\fP to force each term to have the
+same width.
+When either \fIx\fP or \fPy\fP begins with a zero, the shell
+attempts to force all generated terms to contain the same number of digits,
+zero-padding where necessary.
+When characters are supplied, the expression expands to each character
+lexicographically between \fIx\fP and \fIy\fP, inclusive,
+using the default C locale.
+Note that both \fIx\fP and \fIy\fP must be of the same type.
+When the increment is supplied, it is used as the difference between
+each term.  The default increment is 1 or -1 as appropriate.
+.PP
+Brace expansion is performed before any other expansions,
+and any characters special to other expansions are preserved
+in the result.  It is strictly textual.
+.B Bash
+does not apply any syntactic interpretation to the context of the
+expansion or the text between the braces.
+.PP
+A correctly-formed brace expansion must contain unquoted opening
+and closing braces, and at least one unquoted comma or a valid
+sequence expression.
+Any incorrectly formed brace expansion is left unchanged.
+A \fB{\fP or \fB,\fP may be quoted with a backslash to prevent its
+being considered part of a brace expression.
+To avoid conflicts with parameter expansion, the string \fB${\fP
+is not considered eligible for brace expansion.
+.PP
+This construct is typically used as shorthand when the common
+prefix of the strings to be generated is longer than in the
+above example:
+.RS
+.PP
+mkdir /usr/local/src/bash/{old,new,dist,bugs}
+.RE
+or
+.RS
+chown root /usr/{ucb/{ex,edit},lib/{ex?.?*,how_ex}}
+.RE
+.PP
+Brace expansion introduces a slight incompatibility with
+historical versions of
+.BR sh .
+.B sh
+does not treat opening or closing braces specially when they
+appear as part of a word, and preserves them in the output.
+.B Bash
+removes braces from words as a consequence of brace
+expansion.  For example, a word entered to
+.B sh
+as \fIfile{1,2}\fP
+appears identically in the output.  The same word is
+output as
+.I file1 file2
+after expansion by
+.BR bash .
+If strict compatibility with
+.B sh
+is desired, start
+.B bash
+with the
+.B +B 
+option or disable brace expansion with the
+.B +B
+option to the
+.B set
+command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.SS Tilde Expansion
+.PP
+If a word begins with an unquoted tilde character (`\fB~\fP'), all of
+the characters preceding the first unquoted slash (or all characters,
+if there is no unquoted slash) are considered a \fItilde-prefix\fP.
+If none of the characters in the tilde-prefix are quoted, the
+characters in the tilde-prefix following the tilde are treated as a
+possible \fIlogin name\fP.
+If this login name is the null string, the tilde is replaced with the
+value of the shell parameter
+.SM
+.BR HOME .
+If
+.SM
+.B HOME
+is unset, the home directory of the user executing the shell is
+substituted instead.
+Otherwise, the tilde-prefix is replaced with the home directory
+associated with the specified login name.
+.PP
+If the tilde-prefix is a `~+', the value of the shell variable
+.SM
+.B PWD
+replaces the tilde-prefix.
+If the tilde-prefix is a `~\-', the value of the shell variable
+.SM
+.BR OLDPWD ,
+if it is set, is substituted.
+If the characters following the tilde in the tilde-prefix consist
+of a number \fIN\fP, optionally prefixed
+by a `+' or a `\-', the tilde-prefix is replaced with the corresponding
+element from the directory stack, as it would be displayed by the
+.B dirs
+builtin invoked with the tilde-prefix as an argument.
+If the characters following the tilde in the tilde-prefix consist of a
+number without a leading `+' or `\-', `+' is assumed.
+.PP
+If the login name is invalid, or the tilde expansion fails, the word
+is unchanged.
+.PP
+Each variable assignment is checked for unquoted tilde-prefixes immediately
+following a
+.B :
+or the first
+.BR = .
+In these cases, tilde expansion is also performed.
+Consequently, one may use filenames with tildes in assignments to
+.SM
+.BR PATH ,
+.SM
+.BR MAILPATH ,
+and
+.SM
+.BR CDPATH ,
+and the shell assigns the expanded value.
+.SS Parameter Expansion
+.PP
+The `\fB$\fP' character introduces parameter expansion,
+command substitution, or arithmetic expansion.  The parameter name
+or symbol to be expanded may be enclosed in braces, which
+are optional but serve to protect the variable to be expanded from
+characters immediately following it which could be
+interpreted as part of the name.
+.PP
+When braces are used, the matching ending brace is the first `\fB}\fP'
+not escaped by a backslash or within a quoted string, and not within an
+embedded arithmetic expansion, command substitution, or parameter
+expansion.
+.PP
+.PD 0
+.TP
+${\fIparameter\fP}
+The value of \fIparameter\fP is substituted.  The braces are required
+when
+.I parameter
+is a positional parameter with more than one digit,
+or when
+.I parameter
+is followed by a character which is not to be
+interpreted as part of its name.
+The \fIparameter\fP is a shell parameter as described above
+\fBPARAMETERS\fP) or an array reference (\fBArrays\fP).
+.PD
+.PP
+If the first character of \fIparameter\fP is an exclamation point (\fB!\fP),
+it introduces a level of variable indirection.
+\fBBash\fP uses the value of the variable formed from the rest of
+\fIparameter\fP as the name of the variable; this variable is then
+expanded and that value is used in the rest of the substitution, rather
+than the value of \fIparameter\fP itself.
+This is known as \fIindirect expansion\fP.
+The exceptions to this are the expansions of ${\fB!\fP\fIprefix\fP\fB*\fP} and
+${\fB!\fP\fIname\fP[\fI@\fP]} described below.
+The exclamation point must immediately follow the left brace in order to
+introduce indirection.
+.PP
+In each of the cases below, \fIword\fP is subject to tilde expansion,
+parameter expansion, command substitution, and arithmetic expansion.
+.PP
+When not performing substring expansion, using the forms documented below
+(e.g., \fB:-\fP),
+\fBbash\fP tests for a parameter that is unset or null.  Omitting the colon
+results in a test only for a parameter that is unset.
+.PP
+.PD 0
+.TP
+${\fIparameter\fP\fB:\-\fP\fIword\fP}
+\fBUse Default Values\fP.  If
+.I parameter
+is unset or null, the expansion of
+.I word
+is substituted.  Otherwise, the value of
+.I parameter
+is substituted.
+.TP
+${\fIparameter\fP\fB:=\fP\fIword\fP}
+\fBAssign Default Values\fP.
+If
+.I parameter
+is unset or null, the expansion of
+.I word
+is assigned to
+.IR parameter .
+The value of
+.I parameter
+is then substituted.  Positional parameters and special parameters may
+not be assigned to in this way.
+.TP
+${\fIparameter\fP\fB:?\fP\fIword\fP}
+\fBDisplay Error if Null or Unset\fP.
+If
+.I parameter
+is null or unset, the expansion of \fIword\fP (or a message to that effect
+if
+.I word
+is not present) is written to the standard error and the shell, if it
+is not interactive, exits.  Otherwise, the value of \fIparameter\fP is
+substituted.
+.TP
+${\fIparameter\fP\fB:+\fP\fIword\fP}
+\fBUse Alternate Value\fP.
+If
+.I parameter
+is null or unset, nothing is substituted, otherwise the expansion of
+.I word
+is substituted.
+.TP
+${\fIparameter\fP\fB:\fP\fIoffset\fP}
+.PD 0
+.TP
+${\fIparameter\fP\fB:\fP\fIoffset\fP\fB:\fP\fIlength\fP}
+.PD
+\fBSubstring Expansion\fP.
+Expands to up to \fIlength\fP characters of the value of \fIparameter\fP
+starting at the character specified by \fIoffset\fP.
+If \fIparameter\fP is \fB@\fP, an indexed array subscripted by
+\fB@\fP or \fB*\fP, or an associative array name, the results differ as
+described below.
+If \fIlength\fP is omitted, expands to the substring of the value of
+\fIparameter\fP starting at the character specified by \fIoffset\fP
+and extending to the end of the value.
+\fIlength\fP and \fIoffset\fP are arithmetic expressions (see
+.SM
+.B
+ARITHMETIC EVALUATION
+below).
+.sp 1
+If \fIoffset\fP evaluates to a number less than zero, the value
+is used as an offset in characters
+from the end of the value of \fIparameter\fP.
+If \fIlength\fP evaluates to a number less than zero,
+it is interpreted as an offset in characters
+from the end of the value of \fIparameter\fP rather than
+a number of characters, and the expansion is the characters between
+\fIoffset\fP and that result.
+Note that a negative offset must be separated from the colon by at least
+one space to avoid being confused with the \fB:-\fP expansion.
+.sp 1
+If \fIparameter\fP is \fB@\fP, the result is \fIlength\fP positional
+parameters beginning at \fIoffset\fP.
+A negative \fIoffset\fP is taken relative to one greater than the greatest
+positional parameter, so an offset of -1 evaluates to the last positional
+parameter.
+It is an expansion error if \fIlength\fP evaluates to a number less than
+zero.
+.sp 1
+If \fIparameter\fP is an indexed array name subscripted by @ or *,
+the result is the \fIlength\fP
+members of the array beginning with ${\fIparameter\fP[\fIoffset\fP]}.
+A negative \fIoffset\fP is taken relative to one greater than the maximum
+index of the specified array.
+It is an expansion error if \fIlength\fP evaluates to a number less than
+zero.
+.sp 1
+Substring expansion applied to an associative array produces undefined
+results.
+.sp 1
+Substring indexing is zero-based unless the positional parameters 
+are used, in which case the indexing starts at 1 by default.
+If \fIoffset\fP is 0, and the positional parameters are used, \fB$0\fP is
+prefixed to the list.
+.TP
+${\fB!\fP\fIprefix\fP\fB*\fP}
+.PD 0
+.TP
+${\fB!\fP\fIprefix\fP\fB@\fP}
+.PD
+\fBNames matching prefix\fP.
+Expands to the names of variables whose names begin with \fIprefix\fP,
+separated by the first character of the
+.SM
+.B IFS
+special variable.
+When \fI@\fP is used and the expansion appears within double quotes, each
+variable name expands to a separate word.
+.TP
+${\fB!\fP\fIname\fP[\fI@\fP]}
+.PD 0
+.TP
+${\fB!\fP\fIname\fP[\fI*\fP]}
+.PD
+\fBList of array keys\fP.
+If \fIname\fP is an array variable, expands to the list of array indices
+(keys) assigned in \fIname\fP.
+If \fIname\fP is not an array, expands to 0 if \fIname\fP is set and null
+otherwise.
+When \fI@\fP is used and the expansion appears within double quotes, each
+key expands to a separate word.
+.TP
+${\fB#\fP\fIparameter\fP}
+\fBParameter length\fP.
+The length in characters of the value of \fIparameter\fP is substituted.
+If
+.I parameter
+is
+.B *
+or 
+.BR @ ,
+the value substituted is the number of positional parameters.
+If
+.I parameter
+is an array name subscripted by
+.B *
+or
+.BR @ ,
+the value substituted is the number of elements in the array.
+If
+.I parameter
+is an indexed array name subscripted by a negative number, that number is
+interpreted as relative to one greater than the maximum index of
+\fIparameter\fP, so negative indices count back from the end of the
+array, and an index of \-1 references the last element.
+.TP
+${\fIparameter\fP\fB#\fP\fIword\fP}
+.PD 0
+.TP
+${\fIparameter\fP\fB##\fP\fIword\fP}
+.PD
+\fBRemove matching prefix pattern\fP.
+The 
+.I word
+is expanded to produce a pattern just as in pathname
+expansion.  If the pattern matches the beginning of
+the value of
+.IR parameter ,
+then the result of the expansion is the expanded value of
+.I parameter
+with the shortest matching pattern (the ``\fB#\fP'' case) or the
+longest matching pattern (the ``\fB##\fP'' case) deleted.
+If
+.I parameter
+is
+.B @
+or
+.BR * ,
+the pattern removal operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If
+.I parameter
+is an array variable subscripted with
+.B @
+or
+.BR * ,
+the pattern removal operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+.TP
+${\fIparameter\fP\fB%\fP\fIword\fP}
+.PD 0
+.TP
+${\fIparameter\fP\fB%%\fP\fIword\fP}
+.PD
+\fBRemove matching suffix pattern\fP.
+The \fIword\fP is expanded to produce a pattern just as in
+pathname expansion.
+If the pattern matches a trailing portion of the expanded value of
+.IR parameter ,
+then the result of the expansion is the expanded value of
+.I parameter
+with the shortest matching pattern (the ``\fB%\fP'' case) or the
+longest matching pattern (the ``\fB%%\fP'' case) deleted.
+If
+.I parameter
+is
+.B @
+or
+.BR * ,
+the pattern removal operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If
+.I parameter
+is an array variable subscripted with
+.B @
+or
+.BR * ,
+the pattern removal operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+.TP
+${\fIparameter\fP\fB/\fP\fIpattern\fP\fB/\fP\fIstring\fP}
+\fBPattern substitution\fP.
+The \fIpattern\fP is expanded to produce a pattern just as in
+pathname expansion.
+\fIParameter\fP is expanded and the longest match of \fIpattern\fP
+against its value is replaced with \fIstring\fP.
+If \fIpattern\fP begins with \fB/\fP, all matches of \fIpattern\fP are
+replaced with \fIstring\fP.  Normally only the first match is replaced.
+If \fIpattern\fP begins with \fB#\fP, it must match at the beginning
+of the expanded value of \fIparameter\fP.
+If \fIpattern\fP begins with \fB%\fP, it must match at the end
+of the expanded value of \fIparameter\fP.
+If \fIstring\fP is null, matches of \fIpattern\fP are deleted
+and the \fB/\fP following \fIpattern\fP may be omitted.
+If
+.I parameter
+is
+.B @
+or
+.BR * ,
+the substitution operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If
+.I parameter
+is an array variable subscripted with
+.B @
+or
+.BR * ,
+the substitution operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+.TP
+${\fIparameter\fP\fB^\fP\fIpattern\fP}
+.PD 0
+.TP
+${\fIparameter\fP\fB^^\fP\fIpattern\fP}
+.TP
+${\fIparameter\fP\fB,\fP\fIpattern\fP}
+.TP
+${\fIparameter\fP\fB,,\fP\fIpattern\fP}
+.PD
+\fBCase modification\fP.
+This expansion modifies the case of alphabetic characters in \fIparameter\fP.
+The \fIpattern\fP is expanded to produce a pattern just as in
+pathname expansion.
+Each character in the expanded value of \fIparameter\fP is tested against
+\fIpattern\fP, and, if it matches the pattern, its case is converted.
+The pattern should not attempt to match more than one character.
+The \fB^\fP operator converts lowercase letters matching \fIpattern\fP
+to uppercase; the \fB,\fP operator converts matching uppercase letters
+to lowercase.
+The \fB^^\fP and \fB,,\fP expansions convert each matched character in the
+expanded value; the \fB^\fP and \fB,\fP expansions match and convert only
+the first character in the expanded value.
+If \fIpattern\fP is omitted, it is treated like a \fB?\fP, which matches
+every character.
+If
+.I parameter
+is
+.B @
+or
+.BR * ,
+the case modification operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If
+.I parameter
+is an array variable subscripted with
+.B @
+or
+.BR * ,
+the case modification operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+.SS Command Substitution
+.PP
+\fICommand substitution\fP allows the output of a command to replace
+the command name.  There are two forms:
+.RS
+.PP
+\fB$(\fP\fIcommand\fP\|\fB)\fP
+.RE
+or
+.RS
+\fB\`\fP\fIcommand\fP\fB\`\fP
+.RE
+.PP
+.B Bash
+performs the expansion by executing \fIcommand\fP and
+replacing the command substitution with the standard output of the
+command, with any trailing newlines deleted.
+Embedded newlines are not deleted, but they may be removed during
+word splitting.
+The command substitution \fB$(cat \fIfile\fP)\fR can be replaced by
+the equivalent but faster \fB$(< \fIfile\fP)\fR.
+.PP
+When the old-style backquote form of substitution is used,
+backslash retains its literal meaning except when followed by
+.BR $ ,
+.BR \` ,
+or
+.BR \e .
+The first backquote not preceded by a backslash terminates the
+command substitution.
+When using the $(\^\fIcommand\fP\|) form, all characters between the
+parentheses make up the command; none are treated specially.
+.PP
+Command substitutions may be nested.  To nest when using the backquoted form,
+escape the inner backquotes with backslashes.
+.PP
+If the substitution appears within double quotes, word splitting and
+pathname expansion are not performed on the results.
+.SS Arithmetic Expansion
+.PP
+Arithmetic expansion allows the evaluation of an arithmetic expression
+and the substitution of the result.  The format for arithmetic expansion is:
+.RS
+.PP
+\fB$((\fP\fIexpression\fP\fB))\fP
+.RE
+.PP
+The
+.I expression
+is treated as if it were within double quotes, but a double quote
+inside the parentheses is not treated specially.
+All tokens in the expression undergo parameter expansion, string
+expansion, command substitution, and quote removal.
+Arithmetic expansions may be nested.
+.PP
+The evaluation is performed according to the rules listed below under
+.SM
+.BR "ARITHMETIC EVALUATION" .
+If
+.I expression
+is invalid,
+.B bash
+prints a message indicating failure and no substitution occurs.
+.SS Process Substitution
+.PP
+\fIProcess substitution\fP is supported on systems that support named
+pipes (\fIFIFOs\fP) or the \fB/dev/fd\fP method of naming open files.
+It takes the form of
+\fB<(\fP\fIlist\^\fP\fB)\fP
+or
+\fB>(\fP\fIlist\^\fP\fB)\fP.
+The process \fIlist\fP is run with its input or output connected to a
+\fIFIFO\fP or some file in \fB/dev/fd\fP.  The name of this file is
+passed as an argument to the current command as the result of the
+expansion.  If the \fB>(\fP\fIlist\^\fP\fB)\fP form is used, writing to
+the file will provide input for \fIlist\fP.  If the
+\fB<(\fP\fIlist\^\fP\fB)\fP form is used, the file passed as an
+argument should be read to obtain the output of \fIlist\fP.
+.PP
+When available, process substitution is performed
+simultaneously with parameter and variable expansion, 
+command substitution,
+and arithmetic expansion.
+.SS Word Splitting
+.PP
+The shell scans the results of
+parameter expansion,
+command substitution,
+and
+arithmetic expansion
+that did not occur within double quotes for
+.IR "word splitting" .
+.PP
+The shell treats each character of
+.SM
+.B IFS
+as a delimiter, and splits the results of the other
+expansions into words on these characters.  If
+.SM
+.B IFS
+is unset, or its
+value is exactly
+.BR <space><tab><newline> ,
+the default, then
+sequences of
+.BR <space> ,
+.BR <tab> ,
+and
+.B <newline>
+at the beginning and end of the results of the previous
+expansions are ignored, and
+any sequence of
+.SM
+.B IFS
+characters not at the beginning or end serves to delimit words.
+If
+.SM
+.B IFS
+has a value other than the default, then sequences of
+the whitespace characters
+.B space
+and
+.B tab
+are ignored at the beginning and end of the
+word, as long as the whitespace character is in the
+value of
+.SM
+.BR IFS
+(an
+.SM
+.B IFS
+whitespace character).
+Any character in
+.SM
+.B IFS
+that is not
+.SM
+.B IFS
+whitespace, along with any adjacent
+.SM
+.B IFS
+whitespace characters, delimits a field.
+A sequence of
+.SM
+.B IFS
+whitespace characters is also treated as a delimiter.
+If the value of
+.SM
+.B IFS
+is null, no word splitting occurs.
+.PP
+Explicit null arguments (\^\f3"\^"\fP or \^\f3\(aq\^\(aq\fP\^) are retained.
+Unquoted implicit null arguments, resulting from the expansion of
+parameters that have no values, are removed.
+If a parameter with no value is expanded within double quotes, a
+null argument results and is retained.
+.PP
+Note that if no expansion occurs, no splitting
+is performed.
+.SS Pathname Expansion
+.PP
+After word splitting,
+unless the
+.B \-f
+option has been set,
+.B bash
+scans each word for the characters
+.BR * ,
+.BR ? ,
+and
+.BR [ .
+If one of these characters appears, then the word is
+regarded as a
+.IR pattern ,
+and replaced with an alphabetically sorted list of
+filenames matching the pattern
+(see
+.SM
+.B "Pattern Matching"
+below).
+If no matching filenames are found,
+and the shell option
+.B nullglob
+is not enabled, the word is left unchanged.
+If the 
+.B nullglob
+option is set, and no matches are found,
+the word is removed.
+If the
+.B failglob
+shell option is set, and no matches are found, an error message
+is printed and the command is not executed.
+If the shell option
+.B nocaseglob
+is enabled, the match is performed without regard to the case
+of alphabetic characters.
+When a pattern is used for pathname expansion,
+the character
+.B ``.''
+at the start of a name or immediately following a slash
+must be matched explicitly, unless the shell option
+.B dotglob
+is set.
+When matching a pathname, the slash character must always be
+matched explicitly.
+In other cases, the
+.B ``.''
+character is not treated specially.
+See the description of
+.B shopt
+below under
+.SM
+.B SHELL BUILTIN COMMANDS
+for a description of the
+.BR nocaseglob ,
+.BR nullglob ,
+.BR failglob ,
+and
+.B dotglob
+shell options.
+.PP
+The
+.SM
+.B GLOBIGNORE
+shell variable may be used to restrict the set of filenames matching a
+.IR pattern .
+If
+.SM
+.B GLOBIGNORE
+is set, each matching filename that also matches one of the patterns in
+.SM
+.B GLOBIGNORE
+is removed from the list of matches.
+The filenames
+.B ``.''
+and
+.B ``..''
+are always ignored when
+.SM
+.B GLOBIGNORE
+is set and not null.  However, setting
+.SM
+.B GLOBIGNORE
+to a non-null value has the effect of enabling the
+.B dotglob
+shell option, so all other filenames beginning with a
+.B ``.''
+will match.
+To get the old behavior of ignoring filenames beginning with a
+.BR ``.'' ,
+make
+.B ``.*''
+one of the patterns in
+.SM
+.BR GLOBIGNORE .
+The
+.B dotglob
+option is disabled when
+.SM
+.B GLOBIGNORE
+is unset.
+.PP
+\fBPattern Matching\fP
+.PP
+Any character that appears in a pattern, other than the special pattern
+characters described below, matches itself.  The NUL character may not
+occur in a pattern.  A backslash escapes the following character; the
+escaping backslash is discarded when matching.
+The special pattern characters must be quoted if
+they are to be matched literally.
+.PP
+The special pattern characters have the following meanings:
+.PP
+.PD 0
+.RS
+.TP
+.B *
+Matches any string, including the null string.
+When the \fBglobstar\fP shell option is enabled, and \fB*\fP is used in
+a pathname expansion context, two adjacent \fB*\fPs used as a single
+pattern will match all files and zero or more directories and
+subdirectories.
+If followed by a \fB/\fP, two adjacent \fB*\fPs will match only directories
+and subdirectories.
+.TP
+.B ?
+Matches any single character.
+.TP
+.B [...]
+Matches any one of the enclosed characters.  A pair of characters
+separated by a hyphen denotes a
+\fIrange expression\fP;
+any character that falls between those two characters, inclusive,
+using the current locale's collating sequence and character set,
+is matched.  If the first character following the
+.B [
+is a
+.B !
+or a
+.B ^
+then any character not enclosed is matched.
+The sorting order of characters in range expressions is determined by
+the current locale and the values of the
+.SM
+.B LC_COLLATE
+or
+.SM
+.B LC_ALL
+shell variables, if set.
+To obtain the traditional interpretation of range expressions, where
+.B [a\-d]
+is equivalent to
+.BR [abcd] ,
+set value of the
+.B LC_ALL
+shell variable to
+.BR C ,
+or enable the
+.B globasciiranges
+shell option.
+A 
+.B \-
+may be matched by including it as the first or last character
+in the set.
+A
+.B ]
+may be matched by including it as the first character
+in the set.
+.br
+.if t .sp 0.5
+.if n .sp 1
+Within
+.B [
+and
+.BR ] ,
+\fIcharacter classes\fP can be specified using the syntax
+\fB[:\fP\fIclass\fP\fB:]\fP, where \fIclass\fP is one of the
+following classes defined in the POSIX standard:
+.PP
+.RS
+.B
+.if n alnum alpha ascii blank cntrl digit graph lower print punct space upper word xdigit
+.if t alnum   alpha   ascii   blank   cntrl   digit   graph   lower   print   punct   space   upper   word   xdigit
+.br
+A character class matches any character belonging to that class.
+The \fBword\fP character class matches letters, digits, and the character _.
+.br
+.if t .sp 0.5
+.if n .sp 1
+Within
+.B [
+and 
+.BR ] ,
+an \fIequivalence class\fP can be specified using the syntax
+\fB[=\fP\fIc\fP\fB=]\fP, which matches all characters with the
+same collation weight (as defined by the current locale) as
+the character \fIc\fP.
+.br
+.if t .sp 0.5
+.if n .sp 1
+Within
+.B [
+and 
+.BR ] ,
+the syntax \fB[.\fP\fIsymbol\fP\fB.]\fP matches the collating symbol
+\fIsymbol\fP.
+.RE
+.RE
+.PD
+.PP
+If the \fBextglob\fP shell option is enabled using the \fBshopt\fP
+builtin, several extended pattern matching operators are recognized.
+In the following description, a \fIpattern-list\fP is a list of one
+or more patterns separated by a \fB|\fP.
+Composite patterns may be formed using one or more of the following
+sub-patterns:
+.sp 1
+.PD 0
+.RS
+.TP
+\fB?(\fP\^\fIpattern-list\^\fP\fB)\fP
+Matches zero or one occurrence of the given patterns
+.TP
+\fB*(\fP\^\fIpattern-list\^\fP\fB)\fP
+Matches zero or more occurrences of the given patterns
+.TP
+\fB+(\fP\^\fIpattern-list\^\fP\fB)\fP
+Matches one or more occurrences of the given patterns
+.TP
+\fB@(\fP\^\fIpattern-list\^\fP\fB)\fP
+Matches one of the given patterns
+.TP
+\fB!(\fP\^\fIpattern-list\^\fP\fB)\fP
+Matches anything except one of the given patterns
+.RE
+.PD
+.SS Quote Removal
+.PP
+After the preceding expansions, all unquoted occurrences of the
+characters
+.BR \e ,
+.BR \(aq ,
+and \^\f3"\fP\^ that did not result from one of the above
+expansions are removed.
+.SH REDIRECTION
+Before a command is executed, its input and output
+may be
+.I redirected
+using a special notation interpreted by the shell.
+Redirection allows commands' file handles to be
+duplicated, opened, closed,
+made to refer to different files,
+and can change the files the command reads from and writes to.
+Redirection may also be used to modify file handles in the
+current shell execution environment.
+The following redirection
+operators may precede or appear anywhere within a
+.I simple command
+or may follow a
+.IR command .
+Redirections are processed in the order they appear, from
+left to right.
+.PP
+Each redirection that may be preceded by a file descriptor number
+may instead be preceded by a word of the form {\fIvarname\fP}.
+In this case, for each redirection operator except
+>&- and <&-, the shell will allocate a file descriptor greater
+than or equal to 10 and assign it to \fIvarname\fP.
+If >&- or <&- is preceded
+by {\fIvarname\fP}, the value of \fIvarname\fP defines the file
+descriptor to close.
+.PP
+In the following descriptions, if the file descriptor number is
+omitted, and the first character of the redirection operator is
+.BR < ,
+the redirection refers to the standard input (file descriptor
+0).  If the first character of the redirection operator is
+.BR > ,
+the redirection refers to the standard output (file descriptor
+1).
+.PP
+The word following the redirection operator in the following
+descriptions, unless otherwise noted, is subjected to
+brace expansion, tilde expansion, parameter and variable expansion,
+command substitution, arithmetic expansion, quote removal,
+pathname expansion, and word splitting.
+If it expands to more than one word,
+.B bash
+reports an error.
+.PP
+Note that the order of redirections is significant.  For example, 
+the command
+.RS
+.PP
+ls \fB>\fP dirlist 2\fB>&\fP1
+.RE
+.PP
+directs both standard output and standard error to the file 
+.IR dirlist ,
+while the command
+.RS
+.PP
+ls 2\fB>&\fP1 \fB>\fP dirlist
+.RE
+.PP
+directs only the standard output to file
+.IR dirlist ,
+because the standard error was duplicated from the standard output
+before the standard output was redirected to
+.IR dirlist .
+.PP
+\fBBash\fP handles several filenames specially when they are used in
+redirections, as described in the following table:
+.RS
+.PP
+.PD 0
+.TP
+.B /dev/fd/\fIfd\fP
+If \fIfd\fP is a valid integer, file descriptor \fIfd\fP is duplicated.
+.TP
+.B /dev/stdin
+File descriptor 0 is duplicated.
+.TP
+.B /dev/stdout
+File descriptor 1 is duplicated.
+.TP
+.B /dev/stderr
+File descriptor 2 is duplicated.
+.TP
+.B /dev/tcp/\fIhost\fP/\fIport\fP
+If \fIhost\fP is a valid hostname or Internet address, and \fIport\fP
+is an integer port number or service name, \fBbash\fP attempts to open
+the corresponding TCP socket.
+.TP
+.B /dev/udp/\fIhost\fP/\fIport\fP
+If \fIhost\fP is a valid hostname or Internet address, and \fIport\fP
+is an integer port number or service name, \fBbash\fP attempts to open
+the corresponding UDP socket.
+.PD
+.RE
+.PP
+A failure to open or create a file causes the redirection to fail.
+.PP
+Redirections using file descriptors greater than 9 should be used with
+care, as they may conflict with file descriptors the shell uses
+internally.
+.SS Redirecting Input
+.PP
+Redirection of input causes the file whose name results from
+the expansion of
+.I word
+to be opened for reading on file descriptor
+.IR n ,
+or the standard input (file descriptor 0) if
+.I n
+is not specified.
+.PP
+The general format for redirecting input is:
+.RS
+.PP
+[\fIn\fP]\fB<\fP\fIword\fP
+.RE
+.SS Redirecting Output
+.PP
+Redirection of output causes the file whose name results from
+the expansion of
+.I word
+to be opened for writing on file descriptor
+.IR n ,
+or the standard output (file descriptor 1) if
+.I n
+is not specified.  If the file does not exist it is created;
+if it does exist it is truncated to zero size.
+.PP
+The general format for redirecting output is:
+.RS
+.PP
+[\fIn\fP]\fB>\fP\fIword\fP
+.RE
+.PP
+If the redirection operator is
+.BR > ,
+and the
+.B noclobber
+option to the
+.B set
+builtin has been enabled, the redirection will fail if the file
+whose name results from the expansion of \fIword\fP exists and is
+a regular file.
+If the redirection operator is
+.BR >| ,
+or the redirection operator is
+.B >
+and the
+.B noclobber
+option to the
+.B set
+builtin command is not enabled, the redirection is attempted even
+if the file named by \fIword\fP exists.
+.SS Appending Redirected Output
+.PP
+Redirection of output in this fashion
+causes the file whose name results from
+the expansion of
+.I word
+to be opened for appending on file descriptor
+.IR n ,
+or the standard output (file descriptor 1) if
+.I n
+is not specified.  If the file does not exist it is created.
+.PP
+The general format for appending output is:
+.RS
+.PP
+[\fIn\fP]\fB>>\fP\fIword\fP
+.RE
+.PP
+.SS Redirecting Standard Output and Standard Error
+.PP
+This construct allows both the
+standard output (file descriptor 1) and
+the standard error output (file descriptor 2)
+to be redirected to the file whose name is the
+expansion of
+.IR word .
+.PP
+There are two formats for redirecting standard output and
+standard error:
+.RS
+.PP
+\fB&>\fP\fIword\fP
+.RE
+and
+.RS
+\fB>&\fP\fIword\fP
+.RE
+.PP
+Of the two forms, the first is preferred.
+This is semantically equivalent to
+.RS
+.PP
+\fB>\fP\fIword\fP 2\fB>&\fP1
+.RE
+.PP
+When using the second form, \fIword\fP may not expand to a number or
+\fB\-\fP.  If it does, other redirection operators apply
+(see \fBDuplicating File Descriptors\fP below) for compatibility
+reasons.
+.SS Appending Standard Output and Standard Error
+.PP
+This construct allows both the
+standard output (file descriptor 1) and
+the standard error output (file descriptor 2)
+to be appended to the file whose name is the
+expansion of
+.IR word .
+.PP
+The format for appending standard output and standard error is:
+.RS
+.PP
+\fB&>>\fP\fIword\fP
+.RE
+.PP
+This is semantically equivalent to
+.RS
+.PP
+\fB>>\fP\fIword\fP 2\fB>&\fP1
+.RE
+.PP
+(see \fBDuplicating File Descriptors\fP below).
+.SS Here Documents
+.PP
+This type of redirection instructs the shell to read input from the
+current source until a line containing only
+.I delimiter
+(with no trailing blanks)
+is seen.  All of
+the lines read up to that point are then used as the standard
+input for a command.
+.PP
+The format of here-documents is:
+.RS
+.PP
+.nf
+\fB<<\fP[\fB\-\fP]\fIword\fP
+        \fIhere-document\fP
+\fIdelimiter\fP
+.fi
+.RE
+.PP
+No parameter and variable expansion, command substitution,
+arithmetic expansion, or pathname expansion is performed on
+.IR word .
+If any characters in
+.I word
+are quoted, the
+.I delimiter
+is the result of quote removal on
+.IR word ,
+and the lines in the here-document are not expanded.
+If \fIword\fP is unquoted,
+all lines of the here-document are subjected to
+parameter expansion, command substitution, and arithmetic expansion,
+the character sequence
+.B \e<newline>
+is ignored, and
+.B \e
+must be used to quote the characters
+.BR \e ,
+.BR $ ,
+and
+.BR \` .
+.PP
+If the redirection operator is
+.BR <<\- ,
+then all leading tab characters are stripped from input lines and the
+line containing
+.IR delimiter .
+This allows
+here-documents within shell scripts to be indented in a
+natural fashion.
+.SS "Here Strings"
+A variant of here documents, the format is:
+.RS
+.PP
+.nf
+\fB<<<\fP\fIword\fP
+.fi
+.RE
+.PP
+The \fIword\fP undergoes
+brace expansion, tilde expansion, parameter and variable expansion,
+command substitution, arithmetic expansion, and quote removal.
+Pathname expansion and word splitting are not performed.
+The result is supplied as a single string to the command on its
+standard input.
+.SS "Duplicating File Descriptors"
+.PP
+The redirection operator
+.RS
+.PP
+[\fIn\fP]\fB<&\fP\fIword\fP
+.RE
+.PP
+is used to duplicate input file descriptors.
+If
+.I word
+expands to one or more digits, the file descriptor denoted by
+.I n
+is made to be a copy of that file descriptor.
+If the digits in
+.I word
+do not specify a file descriptor open for input, a redirection error occurs.
+If
+.I word
+evaluates to
+.BR \- ,
+file descriptor
+.I n
+is closed.  If
+.I n
+is not specified, the standard input (file descriptor 0) is used.
+.PP
+The operator
+.RS
+.PP
+[\fIn\fP]\fB>&\fP\fIword\fP
+.RE
+.PP
+is used similarly to duplicate output file descriptors.  If
+.I n
+is not specified, the standard output (file descriptor 1) is used.
+If the digits in
+.I word
+do not specify a file descriptor open for output, a redirection error occurs.
+If
+.I word
+evaluates to
+.BR \- ,
+file descriptor
+.I n
+is closed.
+As a special case, if \fIn\fP is omitted, and \fIword\fP does not
+expand to one or more digits or \fB\-\fP, the standard output and standard
+error are redirected as described previously.
+.SS "Moving File Descriptors"
+.PP
+The redirection operator
+.RS
+.PP
+[\fIn\fP]\fB<&\fP\fIdigit\fP\fB\-\fP
+.RE
+.PP
+moves the file descriptor \fIdigit\fP to file descriptor
+.IR n ,
+or the standard input (file descriptor 0) if \fIn\fP is not specified.
+\fIdigit\fP is closed after being duplicated to \fIn\fP.
+.PP
+Similarly, the redirection operator
+.RS
+.PP
+[\fIn\fP]\fB>&\fP\fIdigit\fP\fB\-\fP
+.RE
+.PP
+moves the file descriptor \fIdigit\fP to file descriptor
+.IR n ,
+or the standard output (file descriptor 1) if \fIn\fP is not specified.
+.SS "Opening File Descriptors for Reading and Writing"
+.PP
+The redirection operator
+.RS
+.PP
+[\fIn\fP]\fB<>\fP\fIword\fP
+.RE
+.PP
+causes the file whose name is the expansion of
+.I word
+to be opened for both reading and writing on file descriptor
+.IR n ,
+or on file descriptor 0 if
+.I n
+is not specified.  If the file does not exist, it is created.
+.SH ALIASES
+\fIAliases\fP allow a string to be substituted for a word when it is used
+as the first word of a simple command.
+The shell maintains a list of aliases that may be set and unset with the
+.B alias
+and
+.B unalias
+builtin commands (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+The first word of each simple command, if unquoted,
+is checked to see if it has an
+alias.  If so, that word is replaced by the text of the alias.
+The characters \fB/\fP, \fB$\fP, \fB\`\fP, and \fB=\fP and
+any of the shell \fImetacharacters\fP or quoting characters
+listed above may not appear in an alias name.
+The replacement text may contain any valid shell input,
+including shell metacharacters.
+The first word of the replacement text is tested
+for aliases, but a word that is identical to an alias being expanded
+is not expanded a second time.
+This means that one may alias
+.B ls
+to
+.BR "ls \-F" ,
+for instance, and
+.B bash
+does not try to recursively expand the replacement text.
+If the last character of the alias value is a
+.IR blank ,
+then the next command
+word following the alias is also checked for alias expansion.
+.PP
+Aliases are created and listed with the
+.B alias
+command, and removed with the
+.B unalias
+command.
+.PP
+There is no mechanism for using arguments in the replacement text.
+If arguments are needed, a shell function should be used (see
+.SM
+.B FUNCTIONS
+below).
+.PP
+Aliases are not expanded when the shell is not interactive, unless
+the
+.B expand_aliases
+shell option is set using
+.B shopt
+(see the description of
+.B shopt
+under
+.SM
+\fBSHELL BUILTIN COMMANDS\fP
+below).
+.PP
+The rules concerning the definition and use of aliases are
+somewhat confusing.
+.B Bash
+always reads at least one complete line
+of input before executing any
+of the commands on that line.  Aliases are expanded when a
+command is read, not when it is executed.  Therefore, an
+alias definition appearing on the same line as another
+command does not take effect until the next line of input is read.
+The commands following the alias definition
+on that line are not affected by the new alias.
+This behavior is also an issue when functions are executed.
+Aliases are expanded when a function definition is read,
+not when the function is executed, because a function definition
+is itself a compound command.  As a consequence, aliases
+defined in a function are not available until after that
+function is executed.  To be safe, always put
+alias definitions on a separate line, and do not use
+.B alias
+in compound commands.
+.PP
+For almost every purpose, aliases are superseded by
+shell functions.
+.SH FUNCTIONS
+A shell function, defined as described above under
+.SM
+.BR "SHELL GRAMMAR" ,
+stores a series of commands for later execution.
+When the name of a shell function is used as a simple command name,
+the list of commands associated with that function name is executed.
+Functions are executed in the context of the
+current shell; no new process is created to interpret
+them (contrast this with the execution of a shell script).
+When a function is executed, the arguments to the
+function become the positional parameters
+during its execution.
+The special parameter
+.B #
+is updated to reflect the change.  Special parameter \fB0\fP
+is unchanged.
+The first element of the
+.SM
+.B FUNCNAME
+variable is set to the name of the function while the function
+is executing.
+.PP
+All other aspects of the shell execution
+environment are identical between a function and its caller
+with these exceptions:  the
+.SM
+.B DEBUG
+and
+.B RETURN
+traps (see the description of the
+.B trap
+builtin under
+.SM
+.B SHELL BUILTIN COMMANDS
+below) are not inherited unless the function has been given the
+\fBtrace\fP attribute (see the description of the
+.SM
+.B declare
+builtin below) or the
+\fB\-o functrace\fP shell option has been enabled with
+the \fBset\fP builtin
+(in which case all functions inherit the \fBDEBUG\fP and \fBRETURN\fP traps),
+and the
+.SM
+.B ERR
+trap is not inherited unless the \fB\-o errtrace\fP shell option has
+been enabled.
+.PP
+Variables local to the function may be declared with the
+.B local
+builtin command.  Ordinarily, variables and their values
+are shared between the function and its caller.
+.PP
+The \fBFUNCNEST\fP variable, if set to a numeric value greater
+than 0, defines a maximum function nesting level.  Function
+invocations that exceed the limit cause the entire command to
+abort.
+.PP
+If the builtin command
+.B return
+is executed in a function, the function completes and
+execution resumes with the next command after the function
+call.
+Any command associated with the \fBRETURN\fP trap is executed
+before execution resumes.
+When a function completes, the values of the
+positional parameters and the special parameter
+.B #
+are restored to the values they had prior to the function's
+execution.
+.PP
+Function names and definitions may be listed with the
+.B \-f
+option to the
+.B declare
+or
+.B typeset
+builtin commands.  The
+.B \-F
+option to
+.B declare
+or
+.B typeset
+will list the function names only
+(and optionally the source file and line number, if the \fBextdebug\fP
+shell option is enabled).
+Functions may be exported so that subshells
+automatically have them defined with the
+.B \-f
+option to the 
+.B export
+builtin.
+A function definition may be deleted using the \fB\-f\fP option to
+the
+.B unset
+builtin.
+Note that shell functions and variables with the same name may result
+in multiple identically-named entries in the environment passed to the
+shell's children.
+Care should be taken in cases where this may cause a problem.
+.PP
+Functions may be recursive.
+The \fBFUNCNEST\fP variable may be used to limit the depth of the
+function call stack and restrict the number of function invocations.
+By default, no limit is imposed on the number of recursive calls.
+.SH "ARITHMETIC EVALUATION"
+The shell allows arithmetic expressions to be evaluated, under
+certain circumstances (see the \fBlet\fP and \fBdeclare\fP builtin
+commands and \fBArithmetic Expansion\fP).
+Evaluation is done in fixed-width integers with no check for overflow,
+though division by 0 is trapped and flagged as an error.
+The operators and their precedence, associativity, and values
+are the same as in the C language.
+The following list of operators is grouped into levels of
+equal-precedence operators.
+The levels are listed in order of decreasing precedence.
+.PP
+.PD 0
+.TP
+.B \fIid\fP++ \fIid\fP\-\-
+variable post-increment and post-decrement
+.TP
+.B ++\fIid\fP \-\-\fIid\fP
+variable pre-increment and pre-decrement
+.TP
+.B \- +
+unary minus and plus
+.TP
+.B ! ~
+logical and bitwise negation
+.TP
+.B **
+exponentiation
+.TP
+.B * / %
+multiplication, division, remainder
+.TP
+.B + \-
+addition, subtraction
+.TP
+.B << >>
+left and right bitwise shifts
+.TP
+.B <= >= < >
+comparison
+.TP
+.B == !=
+equality and inequality
+.TP
+.B &
+bitwise AND
+.TP
+.B ^
+bitwise exclusive OR
+.TP
+.B |
+bitwise OR
+.TP
+.B &&
+logical AND
+.TP
+.B ||
+logical OR
+.TP
+.B \fIexpr\fP?\fIexpr\fP:\fIexpr\fP
+conditional operator
+.TP
+.B = *= /= %= += \-= <<= >>= &= ^= |=
+assignment
+.TP
+.B \fIexpr1\fP , \fIexpr2\fP
+comma
+.PD
+.PP
+Shell variables are allowed as operands; parameter expansion is
+performed before the expression is evaluated.
+Within an expression, shell variables may also be referenced by name
+without using the parameter expansion syntax.
+A shell variable that is null or unset evaluates to 0 when referenced
+by name without using the parameter expansion syntax.
+The value of a variable is evaluated as an arithmetic expression
+when it is referenced, or when a variable which has been given the
+\fIinteger\fP attribute using \fBdeclare -i\fP is assigned a value.
+A null value evaluates to 0.
+A shell variable need not have its \fIinteger\fP attribute
+turned on to be used in an expression.
+.PP
+Constants with a leading 0 are interpreted as octal numbers.
+A leading 0x or 0X denotes hexadecimal.
+Otherwise, numbers take the form [\fIbase#\fP]n, where the optional \fIbase\fP
+is a decimal number between 2 and 64 representing the arithmetic
+base, and \fIn\fP is a number in that base.
+If \fIbase#\fP is omitted, then base 10 is used.
+When specifying \fIn\fP,
+the digits greater< than 9 are represented by the lowercase letters,
+the uppercase letters, @, and _, in that order.
+If \fIbase\fP is less than or equal to 36, lowercase and uppercase
+letters may be used interchangeably to represent numbers between 10
+and 35.
+.PP
+Operators are evaluated in order of precedence.  Sub-expressions in
+parentheses are evaluated first and may override the precedence
+rules above.
+.SH "CONDITIONAL EXPRESSIONS"
+Conditional expressions are used by the \fB[[\fP compound command and
+the \fBtest\fP and \fB[\fP builtin commands to test file attributes
+and perform string and arithmetic comparisons.
+Expressions are formed from the following unary or binary primaries.
+If any \fIfile\fP argument to one of the primaries is of the form
+\fI/dev/fd/n\fP, then file descriptor \fIn\fP is checked.
+If the \fIfile\fP argument to one of the primaries is one of
+\fI/dev/stdin\fP, \fI/dev/stdout\fP, or \fI/dev/stderr\fP, file
+descriptor 0, 1, or 2, respectively, is checked.
+.PP
+Unless otherwise specified, primaries that operate on files follow symbolic
+links and operate on the target of the link, rather than the link itself.
+.if t .sp 0.5
+.if n .sp 1
+When used with \fB[[\fP, the \fB<\fP and \fB>\fP operators sort
+lexicographically using the current locale.
+The \fBtest\fP command sorts using ASCII ordering.
+.sp 1
+.PD 0
+.TP
+.B \-a \fIfile\fP
+True if \fIfile\fP exists.
+.TP
+.B \-b \fIfile\fP
+True if \fIfile\fP exists and is a block special file.
+.TP
+.B \-c \fIfile\fP
+True if \fIfile\fP exists and is a character special file.
+.TP
+.B \-d \fIfile\fP
+True if \fIfile\fP exists and is a directory.
+.TP
+.B \-e \fIfile\fP
+True if \fIfile\fP exists.
+.TP
+.B \-f \fIfile\fP
+True if \fIfile\fP exists and is a regular file.
+.TP
+.B \-g \fIfile\fP
+True if \fIfile\fP exists and is set-group-id.
+.TP
+.B \-h \fIfile\fP
+True if \fIfile\fP exists and is a symbolic link.
+.TP
+.B \-k \fIfile\fP
+True if \fIfile\fP exists and its ``sticky'' bit is set.
+.TP
+.B \-p \fIfile\fP
+True if \fIfile\fP exists and is a named pipe (FIFO).
+.TP
+.B \-r \fIfile\fP
+True if \fIfile\fP exists and is readable.
+.TP
+.B \-s \fIfile\fP
+True if \fIfile\fP exists and has a size greater than zero.
+.TP
+.B \-t \fIfd\fP
+True if file descriptor
+.I fd
+is open and refers to a terminal.
+.TP
+.B \-u \fIfile\fP
+True if \fIfile\fP exists and its set-user-id bit is set.
+.TP
+.B \-w \fIfile\fP
+True if \fIfile\fP exists and is writable.
+.TP
+.B \-x \fIfile\fP
+True if \fIfile\fP exists and is executable.
+.TP
+.B \-G \fIfile\fP
+True if \fIfile\fP exists and is owned by the effective group id.
+.TP
+.B \-L \fIfile\fP
+True if \fIfile\fP exists and is a symbolic link.
+.TP
+.B \-N \fIfile\fP
+True if \fIfile\fP exists and has been modified since it was last read.
+.TP
+.B \-O \fIfile\fP
+True if \fIfile\fP exists and is owned by the effective user id.
+.TP
+.B \-S \fIfile\fP
+True if \fIfile\fP exists and is a socket.
+.TP
+\fIfile1\fP \fB\-ef\fP \fIfile2\fP
+True if \fIfile1\fP and \fIfile2\fP refer to the same device and
+inode numbers.
+.TP
+\fIfile1\fP \-\fBnt\fP \fIfile2\fP
+True if \fIfile1\fP is newer (according to modification date) than \fIfile2\fP,
+or if \fIfile1\fP exists and \fPfile2\fP does not.
+.TP
+\fIfile1\fP \-\fBot\fP \fIfile2\fP
+True if \fIfile1\fP is older than \fIfile2\fP, or if \fIfile2\fP exists
+and \fIfile1\fP does not.
+.TP
+.B \-o \fIoptname\fP
+True if the shell option
+.I optname
+is enabled.
+See the list of options under the description of the
+.B \-o
+option to the
+.B set
+builtin below.
+.TP
+.B \-v \fIvarname\fP
+True if the shell variable
+.I varname
+is set (has been assigned a value).
+.TP
+.B \-R \fIvarname\fP
+True if the shell variable
+.I varname
+is set and is a name reference.
+.TP
+.B \-z \fIstring\fP
+True if the length of \fIstring\fP is zero.
+.TP
+\fIstring\fP
+.PD 0
+.TP
+.B \-n \fIstring\fP
+.PD
+True if the length of
+.I string
+is non-zero.
+.TP
+\fIstring1\fP \fB==\fP \fIstring2\fP
+.PD 0
+.TP
+\fIstring1\fP \fB=\fP \fIstring2\fP
+.PD
+True if the strings are equal.  \fB=\fP should be used
+with the \fBtest\fP command for POSIX conformance.
+When used with the \fB[[\fP command, this performs pattern matching as
+described above (\fBCompound Commands\fP).
+.TP
+\fIstring1\fP \fB!=\fP \fIstring2\fP
+True if the strings are not equal.
+.TP
+\fIstring1\fP \fB<\fP \fIstring2\fP
+True if \fIstring1\fP sorts before \fIstring2\fP lexicographically.
+.TP
+\fIstring1\fP \fB>\fP \fIstring2\fP
+True if \fIstring1\fP sorts after \fIstring2\fP lexicographically.
+.TP
+.I \fIarg1\fP \fBOP\fP \fIarg2\fP
+.SM
+.B OP
+is one of
+.BR \-eq ,
+.BR \-ne ,
+.BR \-lt ,
+.BR \-le ,
+.BR \-gt ,
+or
+.BR \-ge .
+These arithmetic binary operators return true if \fIarg1\fP
+is equal to, not equal to, less than, less than or equal to,
+greater than, or greater than or equal to \fIarg2\fP, respectively.
+.I Arg1
+and
+.I arg2
+may be positive or negative integers.
+.PD
+.SH "SIMPLE COMMAND EXPANSION"
+When a simple command is executed, the shell performs the following
+expansions, assignments, and redirections, from left to right.
+.IP 1.
+The words that the parser has marked as variable assignments (those
+preceding the command name) and redirections are saved for later
+processing.
+.IP 2.
+The words that are not variable assignments or redirections are
+expanded.  If any words remain after expansion, the first word
+is taken to be the name of the command and the remaining words are
+the arguments.
+.IP 3.
+Redirections are performed as described above under
+.SM
+.BR REDIRECTION .
+.IP 4.
+The text after the \fB=\fP in each variable assignment undergoes tilde
+expansion, parameter expansion, command substitution, arithmetic expansion,
+and quote removal before being assigned to the variable.
+.PP
+If no command name results, the variable assignments affect the current
+shell environment.  Otherwise, the variables are added to the environment
+of the executed command and do not affect the current shell environment.
+If any of the assignments attempts to assign a value to a readonly variable,
+an error occurs, and the command exits with a non-zero status.
+.PP
+If no command name results, redirections are performed, but do not
+affect the current shell environment.  A redirection error causes the
+command to exit with a non-zero status.
+.PP
+If there is a command name left after expansion, execution proceeds as
+described below.  Otherwise, the command exits.  If one of the expansions
+contained a command substitution, the exit status of the command is
+the exit status of the last command substitution performed.  If there
+were no command substitutions, the command exits with a status of zero.
+.SH "COMMAND EXECUTION"
+After a command has been split into words, if it results in a
+simple command and an optional list of arguments, the following
+actions are taken.
+.PP
+If the command name contains no slashes, the shell attempts to
+locate it.  If there exists a shell function by that name, that
+function is invoked as described above in
+.SM
+.BR FUNCTIONS .
+If the name does not match a function, the shell searches for
+it in the list of shell builtins.  If a match is found, that
+builtin is invoked.
+.PP
+If the name is neither a shell function nor a builtin,
+and contains no slashes,
+.B bash
+searches each element of the
+.SM
+.B PATH
+for a directory containing an executable file by that name.
+.B Bash
+uses a hash table to remember the full pathnames of executable
+files (see
+.B hash
+under
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).
+A full search of the directories in
+.SM
+.B PATH
+is performed only if the command is not found in the hash table.
+If the search is unsuccessful, the shell searches for a defined shell
+function named \fBcommand_not_found_handle\fP.
+If that function exists, it is invoked with the original command and
+the original command's arguments as its arguments, and the function's
+exit status becomes the exit status of the shell.
+If that function is not defined, the shell prints an error
+message and returns an exit status of 127.
+.PP
+If the search is successful, or if the command name contains
+one or more slashes, the shell executes the named program in a
+separate execution environment.
+Argument 0 is set to the name given, and the remaining arguments
+to the command are set to the arguments given, if any.
+.PP
+If this execution fails because the file is not in executable
+format, and the file is not a directory, it is assumed to be
+a \fIshell script\fP, a file
+containing shell commands.  A subshell is spawned to execute
+it.  This subshell reinitializes itself, so
+that the effect is as if a new shell had been invoked
+to handle the script, with the exception that the locations of
+commands remembered by the parent (see
+.B hash
+below under
+.SM
+\fBSHELL BUILTIN COMMANDS\fP)
+are retained by the child.
+.PP
+If the program is a file beginning with
+.BR #! ,
+the remainder of the first line specifies an interpreter
+for the program.  The shell executes the
+specified interpreter on operating systems that do not
+handle this executable format themselves.  The arguments to the 
+interpreter consist of a single optional argument following the
+interpreter name on the first line of the program, followed
+by the name of the program, followed by the command
+arguments, if any.
+.SH COMMAND EXECUTION ENVIRONMENT
+The shell has an \fIexecution environment\fP, which consists of the
+following:
+.IP \(bu
+open files inherited by the shell at invocation, as modified by
+redirections supplied to the \fBexec\fP builtin
+.IP \(bu
+the current working directory as set by \fBcd\fP, \fBpushd\fP, or
+\fBpopd\fP, or inherited by the shell at invocation
+.IP \(bu
+the file creation mode mask as set by \fBumask\fP or inherited from
+the shell's parent
+.IP \(bu
+current traps set by \fBtrap\fP
+.IP \(bu
+shell parameters that are set by variable assignment or with \fBset\fP
+or inherited from the shell's parent in the environment
+.IP \(bu
+shell functions defined during execution or inherited from the shell's
+parent in the environment
+.IP \(bu
+options enabled at invocation (either by default or with command-line
+arguments) or by \fBset\fP
+.IP \(bu
+options enabled by \fBshopt\fP
+.IP \(bu
+shell aliases defined with \fBalias\fP
+.IP \(bu
+various process IDs, including those of background jobs, the value
+of \fB$$\fP, and the value of
+.SM
+.B PPID
+.PP
+When a simple command other than a builtin or shell function
+is to be executed, it
+is invoked in a separate execution environment that consists of
+the following.  Unless otherwise noted, the values are inherited
+from the shell.
+.if n .sp 1
+.IP \(bu
+the shell's open files, plus any modifications and additions specified
+by redirections to the command
+.IP \(bu
+the current working directory
+.IP \(bu
+the file creation mode mask
+.IP \(bu
+shell variables and functions marked for export, along with variables
+exported for the command, passed in the environment
+.IP \(bu
+traps caught by the shell are reset to the values inherited from the
+shell's parent, and traps ignored by the shell are ignored
+.PP
+A command invoked in this separate environment cannot affect the
+shell's execution environment. 
+.PP
+Command substitution, commands grouped with parentheses,
+and asynchronous commands are invoked in a
+subshell environment that is a duplicate of the shell environment,
+except that traps caught by the shell are reset to the values
+that the shell inherited from its parent at invocation.  Builtin
+commands that are invoked as part of a pipeline are also executed in a
+subshell environment.  Changes made to the subshell environment
+cannot affect the shell's execution environment.
+.PP
+Subshells spawned to execute command substitutions inherit the value of
+the \fB\-e\fP option from the parent shell.  When not in \fIposix\fP mode,
+\fBbash\fP clears the \fB\-e\fP option in such subshells.
+.PP
+If a command is followed by a \fB&\fP and job control is not active, the
+default standard input for the command is the empty file \fI/dev/null\fP.
+Otherwise, the invoked command inherits the file descriptors of the calling
+shell as modified by redirections.
+.SH ENVIRONMENT
+When a program is invoked it is given an array of strings
+called the
+.IR environment .
+This is a list of 
+\fIname\fP\-\fIvalue\fP pairs, of the form
+.IR "name\fR=\fPvalue" .
+.PP
+The shell provides several ways to manipulate the environment.
+On invocation, the shell scans its own environment and
+creates a parameter for each name found, automatically marking
+it for
+.I export
+to child processes.  Executed commands inherit the environment.
+The
+.B export
+and
+.B declare \-x
+commands allow parameters and functions to be added to and
+deleted from the environment.  If the value of a parameter
+in the environment is modified, the new value becomes part
+of the environment, replacing the old.  The environment
+inherited by any executed command consists of the shell's
+initial environment, whose values may be modified in the shell,
+less any pairs removed by the
+.B unset
+command, plus any additions via the
+.B export
+and
+.B declare \-x
+commands.
+.PP
+The environment for any
+.I simple command
+or function may be augmented temporarily by prefixing it with
+parameter assignments, as described above in
+.SM
+.BR PARAMETERS .
+These assignment statements affect only the environment seen
+by that command.
+.PP
+If the 
+.B \-k
+option is set (see the
+.B set
+builtin command below), then
+.I all
+parameter assignments are placed in the environment for a command,
+not just those that precede the command name.
+.PP
+When
+.B bash
+invokes an external command, the variable
+.B _
+is set to the full filename of the command and passed to that
+command in its environment.
+.SH "EXIT STATUS"
+.PP
+The exit status of an executed command is the value returned by the
+\fIwaitpid\fP system call or equivalent function.  Exit statuses
+fall between 0 and 255, though, as explained below, the shell may
+use values above 125 specially.  Exit statuses from shell builtins and
+compound commands are also limited to this range. Under certain
+circumstances, the shell will use special values to indicate specific
+failure modes.
+.PP
+For the shell's purposes, a command which exits with a 
+zero exit status has succeeded.  An exit status of zero
+indicates success.  A non-zero exit status indicates failure.
+When a command terminates on a fatal signal \fIN\fP, \fBbash\fP uses
+the value of 128+\fIN\fP as the exit status.
+.PP
+If a command is not found, the child process created to
+execute it returns a status of 127.  If a command is found
+but is not executable, the return status is 126.
+.PP
+If a command fails because of an error during expansion or redirection,
+the exit status is greater than zero.
+.PP
+Shell builtin commands return a status of 0 (\fItrue\fP) if
+successful, and non-zero (\fIfalse\fP) if an error occurs
+while they execute. 
+All builtins return an exit status of 2 to indicate incorrect usage.
+.PP
+\fBBash\fP itself returns the exit status of the last command
+executed, unless a syntax error occurs, in which case it exits
+with a non-zero value.  See also the \fBexit\fP builtin
+command below.
+.SH SIGNALS
+When \fBbash\fP is interactive, in the absence of any traps, it ignores
+.SM
+.B SIGTERM
+(so that \fBkill 0\fP does not kill an interactive shell),
+and
+.SM
+.B SIGINT
+is caught and handled (so that the \fBwait\fP builtin is interruptible).
+In all cases, \fBbash\fP ignores
+.SM
+.BR SIGQUIT .
+If job control is in effect,
+.B bash
+ignores
+.SM
+.BR SIGTTIN ,
+.SM
+.BR SIGTTOU ,
+and
+.SM
+.BR SIGTSTP .
+.PP
+Non-builtin commands run by \fBbash\fP have signal handlers
+set to the values inherited by the shell from its parent.
+When job control is not in effect, asynchronous commands
+ignore
+.SM
+.B SIGINT
+and
+.SM
+.B SIGQUIT
+in addition to these inherited handlers.
+Commands run as a result of command substitution ignore the
+keyboard-generated job control signals
+.SM
+.BR SIGTTIN ,
+.SM
+.BR SIGTTOU ,
+and
+.SM
+.BR SIGTSTP .
+.PP
+The shell exits by default upon receipt of a
+.SM
+.BR SIGHUP .
+Before exiting, an interactive shell resends the
+.SM
+.B SIGHUP
+to all jobs, running or stopped.
+Stopped jobs are sent
+.SM
+.B SIGCONT
+to ensure that they receive the
+.SM
+.BR SIGHUP .
+To prevent the shell from
+sending the signal to a particular job, it should be removed from the
+jobs table with the 
+.B disown
+builtin (see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below) or marked 
+to not receive
+.SM
+.B SIGHUP
+using
+.BR "disown \-h" .
+.PP
+If the
+.B huponexit
+shell option has been set with
+.BR shopt ,
+.B bash
+sends a 
+.SM
+.B SIGHUP
+to all jobs when an interactive login shell exits.
+.PP
+If \fBbash\fP is waiting for a command to complete and receives a signal
+for which a trap has been set, the trap will not be executed until
+the command completes. 
+When \fBbash\fP is waiting for an asynchronous command via the \fBwait\fP
+builtin, the reception of a signal for which a trap has been set will
+cause the \fBwait\fP builtin to return immediately with an exit status
+greater than 128, immediately after which the trap is executed.
+.SH "JOB CONTROL"
+.I Job control
+refers to the ability to selectively stop (\fIsuspend\fP)
+the execution of processes and continue (\fIresume\fP)
+their execution at a later point.  A user typically employs
+this facility via an interactive interface supplied jointly
+by the operating system kernel's terminal driver and
+.BR bash .
+.PP
+The shell associates a
+.I job
+with each pipeline.  It keeps a table of currently executing
+jobs, which may be listed with the
+.B jobs
+command.  When
+.B bash
+starts a job asynchronously (in the
+.IR background ),
+it prints a line that looks like:
+.RS
+.PP
+[1] 25647
+.RE
+.PP
+indicating that this job is job number 1 and that the process ID
+of the last process in the pipeline associated with this job is 25647.
+All of the processes in a single pipeline are members of the same job.
+.B Bash
+uses the
+.I job
+abstraction as the basis for job control.
+.PP
+To facilitate the implementation of the user interface to job
+control, the operating system maintains the notion of a \fIcurrent terminal
+process group ID\fP.  Members of this process group (processes whose
+process group ID is equal to the current terminal process group ID)
+receive keyboard-generated signals such as
+.SM
+.BR SIGINT .
+These processes are said to be in the
+.IR foreground .
+.I Background
+processes are those whose process group ID differs from the terminal's;
+such processes are immune to keyboard-generated signals.
+Only foreground processes are allowed to read from or, if the
+user so specifies with \f(CWstty tostop\fP, write to the
+terminal.
+Background processes which attempt to read from (write to when
+\f(CWstty tostop\fP is in effect) the
+terminal are sent a 
+.SM
+.B SIGTTIN (SIGTTOU)
+signal by the kernel's terminal driver, 
+which, unless caught, suspends the process.
+.PP
+If the operating system on which
+.B bash
+is running supports
+job control,
+.B bash
+contains facilities to use it.
+Typing the
+.I suspend
+character (typically
+.BR ^Z ,
+Control-Z) while a process is running
+causes that process to be stopped and returns control to 
+.BR bash .
+Typing the
+.I "delayed suspend"
+character (typically
+.BR ^Y ,
+Control-Y) causes the process to be stopped when it
+attempts to read input from the terminal, and control to
+be returned to
+.BR bash .
+The user may then manipulate the state of this job, using the
+.B bg
+command to continue it in the background, the
+.B fg
+command to continue it in the foreground, or
+the
+.B kill
+command to kill it.  A \fB^Z\fP takes effect immediately,
+and has the additional side effect of causing pending output
+and typeahead to be discarded.
+.PP
+There are a number of ways to refer to a job in the shell.
+The character
+.B %
+introduces a job specification (\fIjobspec\fP).  Job number
+.I n
+may be referred to as
+.BR %n .
+A job may also be referred to using a prefix of the name used to
+start it, or using a substring that appears in its command line.
+For example,
+.B %ce
+refers to a stopped
+.B ce
+job.  If a prefix matches more than one job,
+.B bash
+reports an error.  Using
+.BR %?ce ,
+on the other hand, refers to any job containing the string
+.B ce
+in its command line.  If the substring matches more than one job,
+.B bash
+reports an error.  The symbols
+.B %%
+and
+.B %+
+refer to the shell's notion of the
+.IR "current job" ,
+which is the last job stopped while it was in
+the foreground or started in the background.
+The 
+.I "previous job"
+may be referenced using
+.BR %\- .
+If there is only a single job, \fB%+\fP and \fB%\-\fP can both be used
+to refer to that job.
+In output pertaining to jobs (e.g., the output of the
+.B jobs
+command), the current job is always flagged with a
+.BR + ,
+and the previous job with a
+.BR \- .
+A single % (with no accompanying job specification) also refers to the
+current job.
+.PP
+Simply naming a job can be used to bring it into the
+foreground:
+.B %1
+is a synonym for
+\fB``fg %1''\fP,
+bringing job 1 from the background into the foreground.
+Similarly,
+.B ``%1 &''
+resumes job 1 in the background, equivalent to
+\fB``bg %1''\fP.
+.PP
+The shell learns immediately whenever a job changes state.
+Normally,
+.B bash
+waits until it is about to print a prompt before reporting
+changes in a job's status so as to not interrupt
+any other output.  If the 
+.B \-b
+option to the
+.B set
+builtin command
+is enabled,
+.B bash
+reports such changes immediately.
+Any trap on
+.SM
+.B SIGCHLD
+is executed for each child that exits.
+.PP
+If an attempt to exit
+.B bash
+is made while jobs are stopped (or, if the \fBcheckjobs\fP shell option has
+been enabled using the \fBshopt\fP builtin, running), the shell prints a
+warning message, and, if the \fBcheckjobs\fP option is enabled, lists the
+jobs and their statuses.
+The
+.B jobs
+command may then be used to inspect their status. 
+If a second attempt to exit is made without an intervening command,
+the shell does not print another warning, and any stopped
+jobs are terminated.
+.SH PROMPTING
+When executing interactively, 
+.B bash
+displays the primary prompt
+.SM
+.B PS1
+when it is ready to read a command, and the secondary prompt
+.SM
+.B PS2
+when it needs more input to complete a command.
+.B Bash
+allows these prompt strings to be customized by inserting a number of
+backslash-escaped special characters that are decoded as follows:
+.RS
+.PD 0
+.TP
+.B \ea
+an ASCII bell character (07)
+.TP
+.B \ed
+the date in "Weekday Month Date" format (e.g., "Tue May 26")
+.TP
+.B \eD{\fIformat\fP}
+the \fIformat\fP is passed to \fIstrftime\fP(3) and the result is inserted
+into the prompt string; an empty \fIformat\fP results in a locale-specific
+time representation.  The braces are required
+.TP
+.B \ee
+an ASCII escape character (033)
+.TP
+.B \eh
+the hostname up to the first `.'
+.TP
+.B \eH
+the hostname
+.TP
+.B \ej
+the number of jobs currently managed by the shell
+.TP
+.B \el
+the basename of the shell's terminal device name
+.TP
+.B \en
+newline
+.TP
+.B \er
+carriage return
+.TP
+.B \es
+the name of the shell, the basename of
+.B $0
+(the portion following the final slash)
+.TP
+.B \et
+the current time in 24-hour HH:MM:SS format
+.TP
+.B \eT
+the current time in 12-hour HH:MM:SS format
+.TP
+.B \e@
+the current time in 12-hour am/pm format
+.TP
+.B \eA
+the current time in 24-hour HH:MM format
+.TP
+.B \eu
+the username of the current user
+.TP
+.B \ev
+the version of \fBbash\fP (e.g., 2.00)
+.TP
+.B \eV
+the release of \fBbash\fP, version + patch level (e.g., 2.00.0)
+.TP
+.B \ew
+the current working directory, with
+.SM
+.B $HOME
+abbreviated with a tilde
+(uses the value of the
+.SM
+.B PROMPT_DIRTRIM
+variable)
+.TP
+.B \eW
+the basename of the current working directory, with
+.SM
+.B $HOME
+abbreviated with a tilde
+.TP
+.B \e!
+the history number of this command
+.TP
+.B \e#
+the command number of this command
+.TP
+.B \e$
+if the effective UID is 0, a
+.BR # ,
+otherwise a
+.B $
+.TP
+.B \e\fInnn\fP
+the character corresponding to the octal number \fInnn\fP
+.TP
+.B \e\e
+a backslash
+.TP
+.B \e[
+begin a sequence of non-printing characters, which could be used to
+embed a terminal control sequence into the prompt
+.TP
+.B \e]
+end a sequence of non-printing characters
+.PD
+.RE
+.PP
+The command number and the history number are usually different:
+the history number of a command is its position in the history
+list, which may include commands restored from the history file
+(see
+.SM
+.B HISTORY
+below), while the command number is the position in the sequence
+of commands executed during the current shell session.
+After the string is decoded, it is expanded via
+parameter expansion, command substitution, arithmetic
+expansion, and quote removal, subject to the value of the
+.B promptvars
+shell option (see the description of the
+.B shopt
+command under
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below).
+.SH READLINE
+This is the library that handles reading input when using an interactive
+shell, unless the
+.B \-\-noediting
+option is given at shell invocation.
+Line editing is also used when using the \fB\-e\fP option to the
+\fBread\fP builtin.
+By default, the line editing commands are similar to those of Emacs.
+A vi-style line editing interface is also available.
+Line editing can be enabled at any time using the
+.B \-o emacs
+or
+.B \-o vi
+options to the
+.B set
+builtin (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+To turn off line editing after the shell is running, use the
+.B +o emacs
+or
+.B +o vi
+options to the
+.B set
+builtin.
+.SS "Readline Notation"
+.PP
+In this section, the Emacs-style notation is used to denote
+keystrokes.  Control keys are denoted by C\-\fIkey\fR, e.g., C\-n
+means Control\-N.  Similarly, 
+.I meta
+keys are denoted by M\-\fIkey\fR, so M\-x means Meta\-X.  (On keyboards
+without a 
+.I meta
+key, M\-\fIx\fP means ESC \fIx\fP, i.e., press the Escape key
+then the
+.I x
+key.  This makes ESC the \fImeta prefix\fP.
+The combination M\-C\-\fIx\fP means ESC\-Control\-\fIx\fP,
+or press the Escape key
+then hold the Control key while pressing the
+.I x
+key.)
+.PP
+Readline commands may be given numeric
+.IR arguments ,
+which normally act as a repeat count.
+Sometimes, however, it is the sign of the argument that is significant.
+Passing a negative argument to a command that acts in the forward
+direction (e.g., \fBkill\-line\fP) causes that command to act in a
+backward direction. 
+Commands whose behavior with arguments deviates from this are noted
+below.
+.PP
+When a command is described as \fIkilling\fP text, the text
+deleted is saved for possible future retrieval
+(\fIyanking\fP).  The killed text is saved in a
+\fIkill ring\fP.  Consecutive kills cause the text to be
+accumulated into one unit, which can be yanked all at once. 
+Commands which do not kill text separate the chunks of text
+on the kill ring.
+.SS "Readline Initialization"
+.PP
+Readline is customized by putting commands in an initialization
+file (the \fIinputrc\fP file).
+The name of this file is taken from the value of the
+.SM
+.B INPUTRC
+variable.  If that variable is unset, the default is
+.IR ~/.inputrc .
+When a program which uses the readline library starts up, the
+initialization file is read, and the key bindings and variables
+are set.
+There are only a few basic constructs allowed in the
+readline initialization file.
+Blank lines are ignored.
+Lines beginning with a \fB#\fP are comments.
+Lines beginning with a \fB$\fP indicate conditional constructs.
+Other lines denote key bindings and variable settings.
+.PP
+The default key-bindings may be changed with an
+.I inputrc 
+file.
+Other programs that use this library may add their own commands
+and bindings.
+.PP
+For example, placing
+.RS
+.PP
+M\-Control\-u: universal\-argument
+.RE
+or
+.RS
+C\-Meta\-u: universal\-argument
+.RE
+into the 
+.I inputrc
+would make M\-C\-u execute the readline command
+.IR universal\-argument .
+.PP
+The following symbolic character names are recognized:
+.IR RUBOUT ,
+.IR DEL ,
+.IR ESC ,
+.IR LFD ,
+.IR NEWLINE ,
+.IR RET ,
+.IR RETURN ,
+.IR SPC ,
+.IR SPACE ,
+and
+.IR TAB .
+.PP
+In addition to command names, readline allows keys to be bound
+to a string that is inserted when the key is pressed (a \fImacro\fP).
+.SS "Readline Key Bindings"
+.PP
+The syntax for controlling key bindings in the
+.I inputrc
+file is simple.  All that is required is the name of the
+command or the text of a macro and a key sequence to which
+it should be bound. The name may be specified in one of two ways:
+as a symbolic key name, possibly with \fIMeta\-\fP or \fIControl\-\fP
+prefixes, or as a key sequence.
+.PP
+When using the form \fBkeyname\fP:\^\fIfunction\-name\fP or \fImacro\fP,
+.I keyname
+is the name of a key spelled out in English.  For example:
+.sp
+.RS
+Control-u: universal\-argument
+.br
+Meta-Rubout: backward-kill-word
+.br
+Control-o: "> output"
+.RE
+.LP
+In the above example,
+.I C\-u
+is bound to the function
+.BR universal\-argument ,
+.I M\-DEL
+is bound to the function
+.BR backward\-kill\-word ,
+and
+.I C\-o
+is bound to run the macro
+expressed on the right hand side (that is, to insert the text
+.if t \f(CW> output\fP
+.if n ``> output''
+into the line).
+.PP
+In the second form, \fB"keyseq"\fP:\^\fIfunction\-name\fP or \fImacro\fP,
+.B keyseq
+differs from
+.B keyname
+above in that strings denoting
+an entire key sequence may be specified by placing the sequence
+within double quotes.  Some GNU Emacs style key escapes can be
+used, as in the following example, but the symbolic character names
+are not recognized.
+.sp
+.RS
+"\eC\-u": universal\-argument
+.br
+"\eC\-x\eC\-r": re\-read\-init\-file
+.br
+"\ee[11~": "Function Key 1"
+.RE
+.PP
+In this example,
+.I C\-u
+is again bound to the function
+.BR universal\-argument .
+.I "C\-x C\-r"
+is bound to the function
+.BR re\-read\-init\-file ,
+and 
+.I "ESC [ 1 1 ~"
+is bound to insert the text
+.if t \f(CWFunction Key 1\fP.
+.if n ``Function Key 1''.
+.PP
+The full set of GNU Emacs style escape sequences is
+.RS
+.PD 0
+.TP
+.B \eC\-
+control prefix
+.TP
+.B \eM\-
+meta prefix
+.TP
+.B \ee
+an escape character
+.TP
+.B \e\e
+backslash
+.TP
+.B \e"
+literal "
+.TP
+.B \e\(aq
+literal \(aq
+.RE
+.PD
+.PP
+In addition to the GNU Emacs style escape sequences, a second
+set of backslash escapes is available:
+.RS
+.PD 0
+.TP
+.B \ea
+alert (bell)
+.TP
+.B \eb
+backspace
+.TP
+.B \ed
+delete
+.TP
+.B \ef
+form feed
+.TP
+.B \en
+newline
+.TP
+.B \er
+carriage return
+.TP
+.B \et
+horizontal tab
+.TP
+.B \ev
+vertical tab
+.TP
+.B \e\fInnn\fP
+the eight-bit character whose value is the octal value \fInnn\fP
+(one to three digits)
+.TP
+.B \ex\fIHH\fP
+the eight-bit character whose value is the hexadecimal value \fIHH\fP
+(one or two hex digits)
+.RE
+.PD
+.PP
+When entering the text of a macro, single or double quotes must
+be used to indicate a macro definition.
+Unquoted text is assumed to be a function name.
+In the macro body, the backslash escapes described above are expanded.
+Backslash will quote any other character in the macro text,
+including " and \(aq.
+.PP
+.B Bash
+allows the current readline key bindings to be displayed or modified
+with the
+.B bind
+builtin command.  The editing mode may be switched during interactive
+use by using the
+.B \-o
+option to the
+.B set
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).
+.SS "Readline Variables"
+.PP
+Readline has variables that can be used to further customize its
+behavior.  A variable may be set in the
+.I inputrc
+file with a statement of the form
+.RS
+.PP
+\fBset\fP \fIvariable\-name\fP \fIvalue\fP
+.RE
+.PP
+Except where noted, readline variables can take the values
+.B On
+or
+.B Off
+(without regard to case).
+Unrecognized variable names are ignored.
+When a variable value is read, empty or null values, "on" (case-insensitive),
+and "1" are equivalent to \fBOn\fP.  All other values are equivalent to
+\fBOff\fP.
+The variables and their default values are:
+.PP
+.PD 0
+.TP
+.B bell\-style (audible)
+Controls what happens when readline wants to ring the terminal bell.
+If set to \fBnone\fP, readline never rings the bell.  If set to
+\fBvisible\fP, readline uses a visible bell if one is available.
+If set to \fBaudible\fP, readline attempts to ring the terminal's bell.
+.TP
+.B bind\-tty\-special\-chars (On)
+If set to \fBOn\fP, readline attempts to bind the control characters
+treated specially by the kernel's terminal driver to their readline
+equivalents.
+.TP
+.B colored\-stats (Off)
+If set to \fBOn\fP, readline displays possible completions using different
+colors to indicate their file type.     
+The color definitions are taken from the value of the \fBLS_COLORS\fP
+environment variable.
+.TP
+.B comment\-begin (``#'')
+The string that is inserted when the readline
+.B insert\-comment
+command is executed.
+This command is bound to
+.B M\-#
+in emacs mode and to
+.B #
+in vi command mode.
+.TP
+.B completion\-ignore\-case (Off)
+If set to \fBOn\fP, readline performs filename matching and completion
+in a case\-insensitive fashion.
+.TP
+.B completion\-prefix\-display\-length (0)
+The length in characters of the common prefix of a list of possible
+completions that is displayed without modification.  When set to a
+value greater than zero, common prefixes longer than this value are
+replaced with an ellipsis when displaying possible completions.
+.TP
+.B completion\-query\-items (100)
+This determines when the user is queried about viewing
+the number of possible completions
+generated by the \fBpossible\-completions\fP command.
+It may be set to any integer value greater than or equal to
+zero.  If the number of possible completions is greater than
+or equal to the value of this variable, the user is asked whether
+or not he wishes to view them; otherwise they are simply listed
+on the terminal.
+.TP
+.B convert\-meta (On)
+If set to \fBOn\fP, readline will convert characters with the
+eighth bit set to an ASCII key sequence
+by stripping the eighth bit and prefixing an
+escape character (in effect, using escape as the \fImeta prefix\fP).
+.TP
+.B disable\-completion (Off)
+If set to \fBOn\fP, readline will inhibit word completion.  Completion
+characters will be inserted into the line as if they had been
+mapped to \fBself-insert\fP.
+.TP
+.B editing\-mode (emacs)
+Controls whether readline begins with a set of key bindings similar
+to \fIEmacs\fP or \fIvi\fP.
+.B editing\-mode
+can be set to either
+.B emacs
+or
+.BR vi .
+.TP
+.B echo\-control\-characters (On)
+When set to \fBOn\fP, on operating systems that indicate they support it,
+readline echoes a character corresponding to a signal generated from the
+keyboard.
+.TP
+.B enable\-keypad (Off)
+When set to \fBOn\fP, readline will try to enable the application
+keypad when it is called.  Some systems need this to enable the
+arrow keys.
+.TP
+.B enable\-meta\-key (On)
+When set to \fBOn\fP, readline will try to enable any meta modifier
+key the terminal claims to support when it is called.  On many terminals,
+the meta key is used to send eight-bit characters.
+.TP
+.B expand\-tilde (Off)
+If set to \fBOn\fP, tilde expansion is performed when readline
+attempts word completion.
+.TP
+.B history\-preserve\-point (Off)
+If set to \fBOn\fP, the history code attempts to place point at the
+same location on each history line retrieved with \fBprevious-history\fP
+or \fBnext-history\fP.
+.TP
+.B history\-size (0)
+Set the maximum number of history entries saved in the history list.
+If set to zero, any existing history entries are deleted and no new entries
+are saved.
+If set to a value less than zero, the number of history entries is not
+limited.
+By default, the number of history entries is not limited.
+.TP
+.B horizontal\-scroll\-mode (Off)
+When set to \fBOn\fP, makes readline use a single line for display,
+scrolling the input horizontally on a single screen line when it
+becomes longer than the screen width rather than wrapping to a new line.
+.TP
+.B input\-meta (Off)
+If set to \fBOn\fP, readline will enable eight-bit input (that is,
+it will not strip the high bit from the characters it reads),
+regardless of what the terminal claims it can support.  The name
+.B meta\-flag
+is a synonym for this variable.
+.TP
+.B isearch\-terminators (``C\-[C\-J'')
+The string of characters that should terminate an incremental
+search without subsequently executing the character as a command.
+If this variable has not been given a value, the characters
+\fIESC\fP and \fIC\-J\fP will terminate an incremental search.
+.TP
+.B keymap (emacs)
+Set the current readline keymap.  The set of valid keymap names is
+\fIemacs, emacs\-standard, emacs\-meta, emacs\-ctlx, vi,
+vi\-command\fP, and
+.IR vi\-insert .
+\fIvi\fP is equivalent to \fIvi\-command\fP; \fIemacs\fP is
+equivalent to \fIemacs\-standard\fP.  The default value is
+.IR emacs ;
+the value of
+.B editing\-mode
+also affects the default keymap.
+.TP
+.B keyseq\-timeout (500)
+Specifies the duration \fIreadline\fP will wait for a character when reading an
+ambiguous key sequence (one that can form a complete key sequence using
+the input read so far, or can take additional input to complete a longer
+key sequence).
+If no input is received within the timeout, \fIreadline\fP will use the shorter
+but complete key sequence.
+The value is specified in milliseconds, so a value of 1000 means that
+\fIreadline\fP will wait one second for additional input.
+If this variable is set to a value less than or equal to zero, or to a
+non-numeric value, \fIreadline\fP will wait until another key is pressed to
+decide which key sequence to complete.
+.TP
+.B mark\-directories (On)
+If set to \fBOn\fP, completed directory names have a slash
+appended.
+.TP
+.B mark\-modified\-lines (Off)
+If set to \fBOn\fP, history lines that have been modified are displayed
+with a preceding asterisk (\fB*\fP).
+.TP
+.B mark\-symlinked\-directories (Off)
+If set to \fBOn\fP, completed names which are symbolic links to directories
+have a slash appended (subject to the value of
+\fBmark\-directories\fP).
+.TP
+.B match\-hidden\-files (On)
+This variable, when set to \fBOn\fP, causes readline to match files whose
+names begin with a `.' (hidden files) when performing filename 
+completion.
+If set to \fBOff\fP, the leading `.' must be
+supplied by the user in the filename to be completed.
+.TP
+.B menu\-complete\-display\-prefix (Off)
+If set to \fBOn\fP, menu completion displays the common prefix of the
+list of possible completions (which may be empty) before cycling through
+the list.
+.TP
+.B output\-meta (Off)
+If set to \fBOn\fP, readline will display characters with the
+eighth bit set directly rather than as a meta-prefixed escape
+sequence.
+.TP
+.B page\-completions (On)
+If set to \fBOn\fP, readline uses an internal \fImore\fP-like pager
+to display a screenful of possible completions at a time.
+.TP
+.B print\-completions\-horizontally (Off)
+If set to \fBOn\fP, readline will display completions with matches
+sorted horizontally in alphabetical order, rather than down the screen.
+.TP 
+.B revert\-all\-at\-newline (Off)
+If set to \fBOn\fP, readline will undo all changes to history lines 
+before returning when \fBaccept\-line\fP is executed.  By default,
+history lines may be modified and retain individual undo lists across
+calls to \fBreadline\fP.
+.TP
+.B show\-all\-if\-ambiguous (Off)
+This alters the default behavior of the completion functions.  If
+set to
+.BR On ,
+words which have more than one possible completion cause the
+matches to be listed immediately instead of ringing the bell.
+.TP
+.B show\-all\-if\-unmodified (Off)
+This alters the default behavior of the completion functions in
+a fashion similar to \fBshow\-all\-if\-ambiguous\fP.
+If set to
+.BR On ,
+words which have more than one possible completion without any
+possible partial completion (the possible completions don't share
+a common prefix) cause the matches to be listed immediately instead
+of ringing the bell.
+.TP
+.B show\-mode\-in\-prompt (Off)
+If set to \fBOn\fP, add a character to the beginning of the prompt
+indicating the editing mode: emacs (@), vi command (:) or vi
+insertion (+).
+.TP
+.B skip\-completed\-text (Off)
+If set to \fBOn\fP, this alters the default completion behavior when
+inserting a single match into the line.  It's only active when
+performing completion in the middle of a word.  If enabled, readline
+does not insert characters from the completion that match characters
+after point in the word being completed, so portions of the word
+following the cursor are not duplicated.
+.TP
+.B visible\-stats (Off)
+If set to \fBOn\fP, a character denoting a file's type as reported
+by \fIstat\fP(2) is appended to the filename when listing possible
+completions.
+.PD
+.SS "Readline Conditional Constructs"
+.PP
+Readline implements a facility similar in spirit to the conditional
+compilation features of the C preprocessor which allows key
+bindings and variable settings to be performed as the result
+of tests.  There are four parser directives used.
+.IP \fB$if\fP
+The 
+.B $if
+construct allows bindings to be made based on the
+editing mode, the terminal being used, or the application using
+readline.  The text of the test extends to the end of the line;
+no characters are required to isolate it.
+.RS
+.IP \fBmode\fP
+The \fBmode=\fP form of the \fB$if\fP directive is used to test
+whether readline is in emacs or vi mode.
+This may be used in conjunction
+with the \fBset keymap\fP command, for instance, to set bindings in
+the \fIemacs\-standard\fP and \fIemacs\-ctlx\fP keymaps only if
+readline is starting out in emacs mode.
+.IP \fBterm\fP
+The \fBterm=\fP form may be used to include terminal-specific
+key bindings, perhaps to bind the key sequences output by the
+terminal's function keys.  The word on the right side of the
+.B =
+is tested against the both full name of the terminal and the portion
+of the terminal name before the first \fB\-\fP.  This allows
+.I sun
+to match both
+.I sun
+and
+.IR sun\-cmd ,
+for instance.
+.IP \fBapplication\fP
+The \fBapplication\fP construct is used to include
+application-specific settings.  Each program using the readline
+library sets the \fIapplication name\fP, and an initialization
+file can test for a particular value.
+This could be used to bind key sequences to functions useful for
+a specific program.  For instance, the following command adds a
+key sequence that quotes the current or previous word in \fBbash\fP:
+.sp 1
+.RS
+.nf
+\fB$if\fP Bash
+# Quote the current or previous word
+"\eC\-xq": "\eeb\e"\eef\e""
+\fB$endif\fP
+.fi
+.RE
+.RE
+.IP \fB$endif\fP
+This command, as seen in the previous example, terminates an
+\fB$if\fP command.
+.IP \fB$else\fP
+Commands in this branch of the \fB$if\fP directive are executed if
+the test fails.
+.IP \fB$include\fP
+This directive takes a single filename as an argument and reads commands
+and bindings from that file.  For example, the following directive
+would read \fI/etc/inputrc\fP:
+.sp 1
+.RS
+.nf
+\fB$include\fP \^ \fI/etc/inputrc\fP
+.fi
+.RE
+.SS Searching
+.PP
+Readline provides commands for searching through the command history
+(see
+.SM
+.B HISTORY
+below) for lines containing a specified string.
+There are two search modes:
+.I incremental
+and
+.IR non-incremental .
+.PP
+Incremental searches begin before the user has finished typing the
+search string.
+As each character of the search string is typed, readline displays
+the next entry from the history matching the string typed so far.
+An incremental search requires only as many characters as needed to
+find the desired history entry.
+The characters present in the value of the \fBisearch-terminators\fP
+variable are used to terminate an incremental search.
+If that variable has not been assigned a value the Escape and
+Control-J characters will terminate an incremental search.
+Control-G will abort an incremental search and restore the original
+line.
+When the search is terminated, the history entry containing the
+search string becomes the current line.
+.PP
+To find other matching entries in the history list, type Control-S or
+Control-R as appropriate.
+This will search backward or forward in the history for the next
+entry matching the search string typed so far.
+Any other key sequence bound to a readline command will terminate
+the search and execute that command.
+For instance, a \fInewline\fP will terminate the search and accept
+the line, thereby executing the command from the history list.
+.PP
+Readline remembers the last incremental search string.  If two
+Control-Rs are typed without any intervening characters defining a
+new search string, any remembered search string is used.
+.PP
+Non-incremental searches read the entire search string before starting
+to search for matching history lines.  The search string may be
+typed by the user or be part of the contents of the current line.
+.SS "Readline Command Names"
+.PP
+The following is a list of the names of the commands and the default
+key sequences to which they are bound.
+Command names without an accompanying key sequence are unbound by default.
+In the following descriptions, \fIpoint\fP refers to the current cursor
+position, and \fImark\fP refers to a cursor position saved by the
+\fBset\-mark\fP command.
+The text between the point and mark is referred to as the \fIregion\fP.
+.SS Commands for Moving
+.PP
+.PD 0
+.TP
+.B beginning\-of\-line (C\-a)
+Move to the start of the current line.
+.TP
+.B end\-of\-line (C\-e)
+Move to the end of the line.
+.TP
+.B forward\-char (C\-f)
+Move forward a character.
+.TP
+.B backward\-char (C\-b)
+Move back a character.
+.TP
+.B forward\-word (M\-f)
+Move forward to the end of the next word.  Words are composed of
+alphanumeric characters (letters and digits).
+.TP
+.B backward\-word (M\-b)
+Move back to the start of the current or previous word.
+Words are composed of alphanumeric characters (letters and digits).
+.TP
+.B shell\-forward\-word
+Move forward to the end of the next word.
+Words are delimited by non-quoted shell metacharacters.
+.TP
+.B shell\-backward\-word
+Move back to the start of the current or previous word.
+Words are delimited by non-quoted shell metacharacters.
+.TP
+.B clear\-screen (C\-l)
+Clear the screen leaving the current line at the top of the screen.
+With an argument, refresh the current line without clearing the
+screen.
+.TP
+.B redraw\-current\-line
+Refresh the current line.
+.PD
+.SS Commands for Manipulating the History
+.PP
+.PD 0
+.TP
+.B accept\-line (Newline, Return)
+Accept the line regardless of where the cursor is.  If this line is
+non-empty, add it to the history list according to the state of the
+.SM
+.B HISTCONTROL
+variable.  If the line is a modified history
+line, then restore the history line to its original state.
+.TP
+.B previous\-history (C\-p)
+Fetch the previous command from the history list, moving back in
+the list.
+.TP
+.B next\-history (C\-n)
+Fetch the next command from the history list, moving forward in the
+list.
+.TP
+.B beginning\-of\-history (M\-<)
+Move to the first line in the history.
+.TP
+.B end\-of\-history (M\->)
+Move to the end of the input history, i.e., the line currently being
+entered.
+.TP
+.B reverse\-search\-history (C\-r)
+Search backward starting at the current line and moving `up' through
+the history as necessary.  This is an incremental search.
+.TP
+.B forward\-search\-history (C\-s)
+Search forward starting at the current line and moving `down' through
+the history as necessary.  This is an incremental search.
+.TP
+.B non\-incremental\-reverse\-search\-history (M\-p)
+Search backward through the history starting at the current line
+using a non-incremental search for a string supplied by the user.
+.TP
+.B non\-incremental\-forward\-search\-history (M\-n)
+Search forward through the history using a non-incremental search for
+a string supplied by the user.
+.TP
+.B history\-search\-forward
+Search forward through the history for the string of characters
+between the start of the current line and the point.
+This is a non-incremental search.
+.TP
+.B history\-search\-backward
+Search backward through the history for the string of characters
+between the start of the current line and the point.
+This is a non-incremental search.
+.TP
+.B yank\-nth\-arg (M\-C\-y)
+Insert the first argument to the previous command (usually
+the second word on the previous line) at point.
+With an argument
+.IR n ,
+insert the \fIn\fPth word from the previous command (the words
+in the previous command begin with word 0).  A negative argument
+inserts the \fIn\fPth word from the end of the previous command.
+Once the argument \fIn\fP is computed, the argument is extracted
+as if the "!\fIn\fP" history expansion had been specified.
+.TP
+.B
+yank\-last\-arg (M\-.\^, M\-_\^)
+Insert the last argument to the previous command (the last word of
+the previous history entry).
+With a numeric argument, behave exactly like \fByank\-nth\-arg\fP.
+Successive calls to \fByank\-last\-arg\fP move back through the history
+list, inserting the last word (or the word specified by the argument to
+the first call) of each line in turn.
+Any numeric argument supplied to these successive calls determines
+the direction to move through the history.  A negative argument switches
+the direction through the history (back or forward).
+The history expansion facilities are used to extract the last argument,
+as if the "!$" history expansion had been specified.
+.TP
+.B shell\-expand\-line (M\-C\-e)
+Expand the line as the shell does.  This
+performs alias and history expansion as well as all of the shell
+word expansions.  See
+.SM
+.B HISTORY EXPANSION
+below for a description of history expansion.
+.TP
+.B history\-expand\-line (M\-^)
+Perform history expansion on the current line.
+See
+.SM
+.B HISTORY EXPANSION
+below for a description of history expansion.
+.TP
+.B magic\-space
+Perform history expansion on the current line and insert a space.
+See
+.SM
+.B HISTORY EXPANSION
+below for a description of history expansion.
+.TP
+.B alias\-expand\-line
+Perform alias expansion on the current line.
+See
+.SM
+.B ALIASES
+above for a description of alias expansion.
+.TP
+.B history\-and\-alias\-expand\-line
+Perform history and alias expansion on the current line.
+.TP
+.B insert\-last\-argument (M\-.\^, M\-_\^)
+A synonym for \fByank\-last\-arg\fP.
+.TP
+.B operate\-and\-get\-next (C\-o)
+Accept the current line for execution and fetch the next line
+relative to the current line from the history for editing.  Any
+argument is ignored.
+.TP
+.B edit\-and\-execute\-command (C\-xC\-e)
+Invoke an editor on the current command line, and execute the result as shell
+commands.
+\fBBash\fP attempts to invoke
+.SM
+.BR $VISUAL ,
+.SM
+.BR $EDITOR ,
+and \fIemacs\fP as the editor, in that order.
+.PD
+.SS Commands for Changing Text
+.PP
+.PD 0
+.TP
+.B delete\-char (C\-d)
+Delete the character at point.  If point is at the
+beginning of the line, there are no characters in the line, and
+the last character typed was not bound to \fBdelete\-char\fP,
+then return
+.SM
+.BR EOF .
+.TP
+.B backward\-delete\-char (Rubout)
+Delete the character behind the cursor.  When given a numeric argument,
+save the deleted text on the kill ring.
+.TP
+.B forward\-backward\-delete\-char
+Delete the character under the cursor, unless the cursor is at the
+end of the line, in which case the character behind the cursor is
+deleted.
+.TP
+.B quoted\-insert (C\-q, C\-v)
+Add the next character typed to the line verbatim.  This is
+how to insert characters like \fBC\-q\fP, for example.
+.TP
+.B tab\-insert (C\-v TAB)
+Insert a tab character.
+.TP
+.B self\-insert (a,\ b,\ A,\ 1,\ !,\ ...)
+Insert the character typed.
+.TP
+.B transpose\-chars (C\-t)
+Drag the character before point forward over the character at point,
+moving point forward as well.
+If point is at the end of the line, then this transposes
+the two characters before point.
+Negative arguments have no effect.
+.TP
+.B transpose\-words (M\-t)
+Drag the word before point past the word after point,
+moving point over that word as well.
+If point is at the end of the line, this transposes
+the last two words on the line.   
+.TP
+.B upcase\-word (M\-u)
+Uppercase the current (or following) word.  With a negative argument,
+uppercase the previous word, but do not move point.
+.TP
+.B downcase\-word (M\-l)
+Lowercase the current (or following) word.  With a negative argument,
+lowercase the previous word, but do not move point.
+.TP
+.B capitalize\-word (M\-c)
+Capitalize the current (or following) word.  With a negative argument,
+capitalize the previous word, but do not move point.
+.TP
+.B overwrite\-mode
+Toggle overwrite mode.  With an explicit positive numeric argument,
+switches to overwrite mode.  With an explicit non-positive numeric
+argument, switches to insert mode.  This command affects only
+\fBemacs\fP mode; \fBvi\fP mode does overwrite differently.
+Each call to \fIreadline()\fP starts in insert mode.
+In overwrite mode, characters bound to \fBself\-insert\fP replace   
+the text at point rather than pushing the text to the right.
+Characters bound to \fBbackward\-delete\-char\fP replace the character
+before point with a space.  By default, this command is unbound.
+.PD
+.SS Killing and Yanking
+.PP
+.PD 0
+.TP
+.B kill\-line (C\-k)
+Kill the text from point to the end of the line.
+.TP
+.B backward\-kill\-line (C\-x Rubout)
+Kill backward to the beginning of the line.
+.TP
+.B unix\-line\-discard (C\-u)
+Kill backward from point to the beginning of the line.
+The killed text is saved on the kill-ring.
+.\" There is no real difference between this and backward-kill-line
+.TP
+.B kill\-whole\-line
+Kill all characters on the current line, no matter where point is.
+.TP
+.B kill\-word  (M\-d)
+Kill from point to the end of the current word, or if between
+words, to the end of the next word.
+Word boundaries are the same as those used by \fBforward\-word\fP.
+.TP
+.B backward\-kill\-word (M\-Rubout)
+Kill the word behind point.
+Word boundaries are the same as those used by \fBbackward\-word\fP.
+.TP
+.B shell\-kill\-word  (M\-d)
+Kill from point to the end of the current word, or if between
+words, to the end of the next word.
+Word boundaries are the same as those used by \fBshell\-forward\-word\fP.
+.TP
+.B shell\-backward\-kill\-word (M\-Rubout)
+Kill the word behind point.
+Word boundaries are the same as those used by \fBshell\-backward\-word\fP.
+.TP
+.B unix\-word\-rubout (C\-w)
+Kill the word behind point, using white space as a word boundary.
+The killed text is saved on the kill-ring.
+.TP
+.B unix\-filename\-rubout
+Kill the word behind point, using white space and the slash character
+as the word boundaries.
+The killed text is saved on the kill-ring.
+.TP
+.B delete\-horizontal\-space (M\-\e)
+Delete all spaces and tabs around point.
+.TP
+.B kill\-region
+Kill the text in the current region.
+.TP
+.B copy\-region\-as\-kill
+Copy the text in the region to the kill buffer.
+.TP
+.B copy\-backward\-word
+Copy the word before point to the kill buffer.
+The word boundaries are the same as \fBbackward\-word\fP.
+.TP
+.B copy\-forward\-word
+Copy the word following point to the kill buffer.
+The word boundaries are the same as \fBforward\-word\fP.
+.TP
+.B yank (C\-y)
+Yank the top of the kill ring into the buffer at point.
+.TP
+.B yank\-pop (M\-y)
+Rotate the kill ring, and yank the new top.  Only works following
+.B yank
+or
+.BR yank\-pop .
+.PD
+.SS Numeric Arguments
+.PP
+.PD 0
+.TP
+.B digit\-argument (M\-0, M\-1, ..., M\-\-)
+Add this digit to the argument already accumulating, or start a new
+argument.  M\-\- starts a negative argument.
+.TP
+.B universal\-argument
+This is another way to specify an argument.
+If this command is followed by one or more digits, optionally with a
+leading minus sign, those digits define the argument.
+If the command is followed by digits, executing
+.B universal\-argument
+again ends the numeric argument, but is otherwise ignored.
+As a special case, if this command is immediately followed by a
+character that is neither a digit or minus sign, the argument count
+for the next command is multiplied by four.
+The argument count is initially one, so executing this function the
+first time makes the argument count four, a second time makes the
+argument count sixteen, and so on.
+.PD
+.SS Completing
+.PP
+.PD 0
+.TP
+.B complete (TAB)
+Attempt to perform completion on the text before point.
+.B Bash
+attempts completion treating the text as a variable (if the
+text begins with \fB$\fP), username (if the text begins with
+\fB~\fP), hostname (if the text begins with \fB@\fP), or
+command (including aliases and functions) in turn.  If none
+of these produces a match, filename completion is attempted.
+.TP
+.B possible\-completions (M\-?)
+List the possible completions of the text before point.
+.TP
+.B insert\-completions (M\-*)
+Insert all completions of the text before point
+that would have been generated by
+\fBpossible\-completions\fP.
+.TP
+.B menu\-complete
+Similar to \fBcomplete\fP, but replaces the word to be completed
+with a single match from the list of possible completions.
+Repeated execution of \fBmenu\-complete\fP steps through the list
+of possible completions, inserting each match in turn.
+At the end of the list of completions, the bell is rung
+(subject to the setting of \fBbell\-style\fP)
+and the original text is restored.
+An argument of \fIn\fP moves \fIn\fP positions forward in the list
+of matches; a negative argument may be used to move backward
+through the list.
+This command is intended to be bound to \fBTAB\fP, but is unbound
+by default.
+.TP
+.B menu\-complete\-backward
+Identical to \fBmenu\-complete\fP, but moves backward through the list
+of possible completions, as if \fBmenu\-complete\fP had been given a
+negative argument.  This command is unbound by default.
+.TP
+.B delete\-char\-or\-list
+Deletes the character under the cursor if not at the beginning or
+end of the line (like \fBdelete\-char\fP).
+If at the end of the line, behaves identically to
+\fBpossible\-completions\fP.
+This command is unbound by default.
+.TP
+.B complete\-filename (M\-/)
+Attempt filename completion on the text before point.
+.TP
+.B possible\-filename\-completions (C\-x /)
+List the possible completions of the text before point,
+treating it as a filename.
+.TP
+.B complete\-username (M\-~)
+Attempt completion on the text before point, treating
+it as a username.
+.TP
+.B possible\-username\-completions (C\-x ~)
+List the possible completions of the text before point,
+treating it as a username.
+.TP
+.B complete\-variable (M\-$)
+Attempt completion on the text before point, treating
+it as a shell variable.
+.TP
+.B possible\-variable\-completions (C\-x $)
+List the possible completions of the text before point,
+treating it as a shell variable.
+.TP
+.B complete\-hostname (M\-@)
+Attempt completion on the text before point, treating
+it as a hostname.
+.TP
+.B possible\-hostname\-completions (C\-x @)
+List the possible completions of the text before point,
+treating it as a hostname.
+.TP
+.B complete\-command (M\-!)
+Attempt completion on the text before point, treating
+it as a command name.  Command completion attempts to
+match the text against aliases, reserved words, shell
+functions, shell builtins, and finally executable filenames,
+in that order.
+.TP
+.B possible\-command\-completions (C\-x !)
+List the possible completions of the text before point,
+treating it as a command name.
+.TP
+.B dynamic\-complete\-history (M\-TAB)
+Attempt completion on the text before point, comparing
+the text against lines from the history list for possible
+completion matches.
+.TP
+.B dabbrev\-expand
+Attempt menu completion on the text before point, comparing
+the text against lines from the history list for possible
+completion matches.
+.TP
+.B complete\-into\-braces (M\-{)
+Perform filename completion and insert the list of possible completions
+enclosed within braces so the list is available to the shell (see
+.B Brace Expansion
+above).
+.PD
+.SS Keyboard Macros
+.PP
+.PD 0
+.TP
+.B start\-kbd\-macro (C\-x (\^)
+Begin saving the characters typed into the current keyboard macro.
+.TP
+.B end\-kbd\-macro (C\-x )\^)
+Stop saving the characters typed into the current keyboard macro
+and store the definition.
+.TP
+.B call\-last\-kbd\-macro (C\-x e)
+Re-execute the last keyboard macro defined, by making the characters
+in the macro appear as if typed at the keyboard.
+.B print\-last\-kbd\-macro ()
+Print the last keyboard macro defined in a format suitable for the
+\fIinputrc\fP file.
+.PD
+.SS Miscellaneous
+.PP
+.PD 0
+.TP
+.B re\-read\-init\-file (C\-x C\-r)
+Read in the contents of the \fIinputrc\fP file, and incorporate
+any bindings or variable assignments found there.
+.TP
+.B abort (C\-g)
+Abort the current editing command and
+ring the terminal's bell (subject to the setting of
+.BR bell\-style ).
+.TP
+.B do\-uppercase\-version (M\-a, M\-b, M\-\fIx\fP, ...)
+If the metafied character \fIx\fP is lowercase, run the command
+that is bound to the corresponding uppercase character.
+.TP
+.B prefix\-meta (ESC)
+Metafy the next character typed.
+.SM
+.B ESC
+.B f
+is equivalent to
+.BR Meta\-f .
+.TP
+.B undo (C\-_, C\-x C\-u)
+Incremental undo, separately remembered for each line.
+.TP
+.B revert\-line (M\-r)
+Undo all changes made to this line.  This is like executing the
+.B undo
+command enough times to return the line to its initial state.
+.TP
+.B tilde\-expand (M\-&)
+Perform tilde expansion on the current word.
+.TP
+.B set\-mark (C\-@, M\-<space>)
+Set the mark to the point.  If a
+numeric argument is supplied, the mark is set to that position.
+.TP
+.B exchange\-point\-and\-mark (C\-x C\-x)
+Swap the point with the mark.  The current cursor position is set to
+the saved position, and the old cursor position is saved as the mark.
+.TP
+.B character\-search (C\-])
+A character is read and point is moved to the next occurrence of that
+character.  A negative count searches for previous occurrences.
+.TP
+.B character\-search\-backward (M\-C\-])
+A character is read and point is moved to the previous occurrence of that
+character.  A negative count searches for subsequent occurrences.
+.TP
+.B skip\-csi\-sequence
+Read enough characters to consume a multi-key sequence such as those
+defined for keys like Home and End.  Such sequences begin with a
+Control Sequence Indicator (CSI), usually ESC\-[.  If this sequence is
+bound to "\e[", keys producing such sequences will have no effect
+unless explicitly bound to a readline command, instead of inserting
+stray characters into the editing buffer.  This is unbound by default,
+but usually bound to ESC\-[.
+.TP
+.B insert\-comment (M\-#)
+Without a numeric argument, the value of the readline
+.B comment\-begin
+variable is inserted at the beginning of the current line.
+If a numeric argument is supplied, this command acts as a toggle:  if
+the characters at the beginning of the line do not match the value
+of \fBcomment\-begin\fP, the value is inserted, otherwise
+the characters in \fBcomment\-begin\fP are deleted from the beginning of 
+the line.
+In either case, the line is accepted as if a newline had been typed.
+The default value of
+\fBcomment\-begin\fP causes this command to make the current line
+a shell comment.
+If a numeric argument causes the comment character to be removed, the line
+will be executed by the shell.
+.TP
+.B glob\-complete\-word (M\-g)
+The word before point is treated as a pattern for pathname expansion,
+with an asterisk implicitly appended.  This pattern is used to
+generate a list of matching filenames for possible completions.
+.TP
+.B glob\-expand\-word (C\-x *)
+The word before point is treated as a pattern for pathname expansion,
+and the list of matching filenames is inserted, replacing the word.
+If a numeric argument is supplied, an asterisk is appended before
+pathname expansion.
+.TP
+.B glob\-list\-expansions (C\-x g)
+The list of expansions that would have been generated by
+.B glob\-expand\-word
+is displayed, and the line is redrawn.
+If a numeric argument is supplied, an asterisk is appended before
+pathname expansion.
+.TP
+.B dump\-functions
+Print all of the functions and their key bindings to the
+readline output stream.  If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an \fIinputrc\fP file.
+.TP
+.B dump\-variables
+Print all of the settable readline variables and their values to the
+readline output stream.  If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an \fIinputrc\fP file.
+.TP
+.B dump\-macros
+Print all of the readline key sequences bound to macros and the
+strings they output.  If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an \fIinputrc\fP file.
+.TP
+.B display\-shell\-version (C\-x C\-v)
+Display version information about the current instance of
+.BR bash .
+.PD
+.SS Programmable Completion
+.PP
+When word completion is attempted for an argument to a command for
+which a completion specification (a \fIcompspec\fP) has been defined
+using the \fBcomplete\fP builtin (see
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below), the programmable completion facilities are invoked.
+.PP
+First, the command name is identified.
+If the command word is the empty string (completion attempted at the
+beginning of an empty line), any compspec defined with
+the \fB\-E\fP option to \fBcomplete\fP is used.
+If a compspec has been defined for that command, the
+compspec is used to generate the list of possible completions for the word.
+If the command word is a full pathname, a compspec for the full
+pathname is searched for first.
+If no compspec is found for the full pathname, an attempt is made to
+find a compspec for the portion following the final slash.
+If those searches do not result in a compspec, any compspec defined with
+the \fB\-D\fP option to \fBcomplete\fP is used as the default.
+.PP
+Once a compspec has been found, it is used to generate the list of
+matching words.
+If a compspec is not found, the default \fBbash\fP completion as
+described above under \fBCompleting\fP is performed.
+.PP
+First, the actions specified by the compspec are used.
+Only matches which are prefixed by the word being completed are
+returned.
+When the
+.B \-f
+or
+.B \-d
+option is used for filename or directory name completion, the shell
+variable
+.SM
+.B FIGNORE
+is used to filter the matches.
+.PP
+Any completions specified by a pathname expansion pattern to the
+\fB\-G\fP option are generated next.
+The words generated by the pattern need not match the word
+being completed.
+The
+.SM
+.B GLOBIGNORE
+shell variable is not used to filter the matches, but the
+.SM
+.B FIGNORE
+variable is used.
+.PP
+Next, the string specified as the argument to the \fB\-W\fP option
+is considered.
+The string is first split using the characters in the
+.SM
+.B IFS
+special variable as delimiters.
+Shell quoting is honored.
+Each word is then expanded using
+brace expansion, tilde expansion, parameter and variable expansion,
+command substitution, and arithmetic expansion,
+as described above under 
+.SM
+.BR EXPANSION .
+The results are split using the rules described above under
+\fBWord Splitting\fP.
+The results of the expansion are prefix-matched against the word being
+completed, and the matching words become the possible completions.
+.PP
+After these matches have been generated, any shell function or command
+specified with the \fB\-F\fP and \fB\-C\fP options is invoked.
+When the command or function is invoked, the
+.SM
+.BR COMP_LINE ,
+.SM
+.BR COMP_POINT ,
+.SM
+.BR COMP_KEY ,
+and
+.SM
+.B COMP_TYPE
+variables are assigned values as described above under
+\fBShell Variables\fP.
+If a shell function is being invoked, the 
+.SM
+.B COMP_WORDS
+and
+.SM
+.B COMP_CWORD
+variables are also set.
+When the function or command is invoked,
+the first argument (\fB$1\fP) is the name of the command whose arguments are
+being completed,
+the second argument (\fB$2\fP) is the word being completed,
+and the third argument (\fB$3\fP) is the word preceding the word being
+completed on the current command line.
+No filtering of the generated completions against the word being completed
+is performed; the function or command has complete freedom in generating
+the matches.
+.PP
+Any function specified with \fB\-F\fP is invoked first.
+The function may use any of the shell facilities, including the
+\fBcompgen\fP builtin described below, to generate the matches.
+It must put the possible completions in the
+.SM
+.B COMPREPLY
+array variable, one per array element.
+.PP
+Next, any command specified with the \fB\-C\fP option is invoked
+in an environment equivalent to command substitution.
+It should print a list of completions, one per line, to the
+standard output.
+Backslash may be used to escape a newline, if necessary.
+.PP
+After all of the possible completions are generated, any filter
+specified with the \fB\-X\fP option is applied to the list.
+The filter is a pattern as used for pathname expansion; a \fB&\fP
+in the pattern is replaced with the text of the word being completed.
+A literal \fB&\fP may be escaped with a backslash; the backslash
+is removed before attempting a match.
+Any completion that matches the pattern will be removed from the list.
+A leading \fB!\fP negates the pattern; in this case any completion
+not matching the pattern will be removed.
+.PP
+Finally, any prefix and suffix specified with the \fB\-P\fP and \fB\-S\fP
+options are added to each member of the completion list, and the result is
+returned to the readline completion code as the list of possible
+completions.
+.PP
+If the previously-applied actions do not generate any matches, and the
+\fB\-o dirnames\fP option was supplied to \fBcomplete\fP when the
+compspec was defined, directory name completion is attempted.
+.PP
+If the \fB\-o plusdirs\fP option was supplied to \fBcomplete\fP when the
+compspec was defined, directory name completion is attempted and any
+matches are added to the results of the other actions.
+.PP
+By default, if a compspec is found, whatever it generates is returned
+to the completion code as the full set of possible completions.
+The default \fBbash\fP completions are not attempted, and the readline
+default of filename completion is disabled.
+If the \fB\-o bashdefault\fP option was supplied to \fBcomplete\fP when
+the compspec was defined, the \fBbash\fP default completions are attempted
+if the compspec generates no matches.
+If the \fB\-o default\fP option was supplied to \fBcomplete\fP when the
+compspec was defined, readline's default completion will be performed
+if the compspec (and, if attempted, the default \fBbash\fP completions)
+generate no matches.
+.PP
+When a compspec indicates that directory name completion is desired,
+the programmable completion functions force readline to append a slash
+to completed names which are symbolic links to directories, subject to  
+the value of the \fBmark\-directories\fP readline variable, regardless
+of the setting of the \fBmark-symlinked\-directories\fP readline variable.
+.PP
+There is some support for dynamically modifying completions.  This is
+most useful when used in combination with a default completion specified
+with \fBcomplete -D\fP.
+It's possible for shell functions executed as completion
+handlers to indicate that completion should be retried by returning an
+exit status of 124.  If a shell function returns 124, and changes
+the compspec associated with the command on which completion is being
+attempted (supplied as the first argument when the function is executed),
+programmable completion restarts from the beginning, with an
+attempt to find a new compspec for that command.  This allows a set of
+completions to be built dynamically as completion is attempted, rather than
+being loaded all at once.
+.PP
+For instance, assuming that there is a library of compspecs, each kept in a
+file corresponding to the name of the command, the following default
+completion function would load completions dynamically:
+.PP
+\f(CW_completion_loader()
+.br
+{
+.br
+       . "/etc/bash_completion.d/$1.sh" >/dev/null 2>&1 && return 124
+.br
+}
+.br
+complete -D -F _completion_loader
+.br
+\fP
+.SH HISTORY
+When the
+.B \-o history
+option to the
+.B set
+builtin is enabled, the shell provides access to the
+\fIcommand history\fP,
+the list of commands previously typed.
+The value of the
+.SM
+.B HISTSIZE
+variable is used as the
+number of commands to save in a history list.
+The text of the last
+.SM
+.B HISTSIZE
+commands (default 500) is saved.  The shell
+stores each command in the history list prior to parameter and
+variable expansion (see
+.SM
+.B EXPANSION
+above) but after history expansion is performed, subject to the
+values of the shell variables
+.SM
+.B HISTIGNORE
+and
+.SM
+.BR HISTCONTROL .
+.PP
+On startup, the history is initialized from the file named by
+the variable
+.SM
+.B HISTFILE
+(default \fI~/.bash_history\fP).
+The file named by the value of
+.SM
+.B HISTFILE
+is truncated, if necessary, to contain no more than
+the number of lines specified by the value of
+.SM
+.BR HISTFILESIZE .
+If \fBHISTFILESIZE\fP is unset, or set to null, a non-numeric value,
+or a numeric value less than zero, the history file is not truncated.
+When the history file is read,
+lines beginning with the history comment character followed immediately
+by a digit are interpreted as timestamps for the preceding history line.
+These timestamps are optionally displayed depending on the value of the
+.SM
+.B HISTTIMEFORMAT
+variable.
+When a shell with history enabled exits, the last
+.SM
+.B $HISTSIZE
+lines are copied from the history list to
+.SM
+.BR $HISTFILE .
+If the
+.B histappend
+shell option is enabled
+(see the description of
+.B shopt
+under
+.SM
+.B "SHELL BUILTIN COMMANDS"
+below), the lines are appended to the history file,
+otherwise the history file is overwritten.
+If
+.SM
+.B HISTFILE
+is unset, or if the history file is unwritable, the history is
+not saved.
+If the
+.SM
+.B HISTTIMEFORMAT
+variable is set, time stamps are written to the history file, marked
+with the history comment character, so
+they may be preserved across shell sessions.
+This uses the history comment character to distinguish timestamps from
+other history lines.
+After saving the history, the history file is truncated
+to contain no more than
+.SM
+.B HISTFILESIZE
+lines.  If
+.SM
+.B HISTFILESIZE
+is unset, or set to null, a non-numeric value,
+or a numeric value less than zero, the history file is not truncated.
+.PP
+The builtin command
+.B fc
+(see
+.SM
+.B SHELL BUILTIN COMMANDS
+below) may be used to list or edit and re-execute a portion of
+the history list.
+The
+.B history
+builtin may be used to display or modify the history list and
+manipulate the history file.
+When using command-line editing, search commands
+are available in each editing mode that provide access to the
+history list.
+.PP
+The shell allows control over which commands are saved on the history
+list.  The
+.SM
+.B HISTCONTROL
+and
+.SM
+.B HISTIGNORE
+variables may be set to cause the shell to save only a subset of the
+commands entered.
+The
+.B cmdhist
+shell option, if enabled, causes the shell to attempt to save each
+line of a multi-line command in the same history entry, adding
+semicolons where necessary to preserve syntactic correctness.
+The
+.B lithist
+shell option causes the shell to save the command with embedded newlines
+instead of semicolons.  See the description of the
+.B shopt
+builtin below under
+.SM
+.B "SHELL BUILTIN COMMANDS"
+for information on setting and unsetting shell options.
+.SH "HISTORY EXPANSION"
+.PP
+The shell supports a history expansion feature that
+is similar to the history expansion in
+.BR csh.
+This section describes what syntax features are available.  This
+feature is enabled by default for interactive shells, and can be
+disabled using the
+.B +H
+option to the
+.B set
+builtin command (see
+.SM
+.B SHELL BUILTIN COMMANDS
+below).  Non-interactive shells do not perform history expansion
+by default.
+.PP
+History expansions introduce words from the history list into
+the input stream, making it easy to repeat commands, insert the
+arguments to a previous command into the current input line, or
+fix errors in previous commands quickly.
+.PP
+History expansion is performed immediately after a complete line
+is read, before the shell breaks it into words.
+It takes place in two parts.
+The first is to determine which line from the history list
+to use during substitution.
+The second is to select portions of that line for inclusion into
+the current one.
+The line selected from the history is the \fIevent\fP,
+and the portions of that line that are acted upon are \fIwords\fP.
+Various \fImodifiers\fP are available to manipulate the selected words.
+The line is broken into words in the same fashion as when reading input,
+so that several \fImetacharacter\fP-separated words surrounded by
+quotes are considered one word.
+History expansions are introduced by the appearance of the
+history expansion character, which is \^\fB!\fP\^ by default.
+Only backslash (\^\fB\e\fP\^) and single quotes can quote
+the history expansion character.
+.PP
+Several characters inhibit history expansion if found immediately
+following the history expansion character, even if it is unquoted:
+space, tab, newline, carriage return, and \fB=\fP.
+If the \fBextglob\fP shell option is enabled, \fB(\fP will also
+inhibit expansion.
+.PP
+Several shell options settable with the
+.B shopt
+builtin may be used to tailor the behavior of history expansion.
+If the
+.B histverify
+shell option is enabled (see the description of the
+.B shopt
+builtin below), and
+.B readline
+is being used, history substitutions are not immediately passed to
+the shell parser.
+Instead, the expanded line is reloaded into the
+.B readline
+editing buffer for further modification.
+If
+.B readline
+is being used, and the
+.B histreedit
+shell option is enabled, a failed history substitution will be reloaded
+into the
+.B readline
+editing buffer for correction.
+The
+.B \-p
+option to the
+.B history
+builtin command may be used to see what a history expansion will
+do before using it.
+The
+.B \-s
+option to the
+.B history
+builtin may be used to add commands to the end of the history list
+without actually executing them, so that they are available for
+subsequent recall.
+.PP
+The shell allows control of the various characters used by the
+history expansion mechanism (see the description of
+.B histchars
+above under
+.BR "Shell Variables" ).
+The shell uses
+the history comment character to mark history timestamps when
+writing the history file.
+.SS Event Designators
+.PP
+An event designator is a reference to a command line entry in the
+history list.
+Unless the reference is absolute, events are relative to the current
+position in the history list.
+.PP
+.PD 0
+.TP
+.B !
+Start a history substitution, except when followed by a
+.BR blank ,
+newline, carriage return, =
+or ( (when the \fBextglob\fP shell option is enabled using
+the \fBshopt\fP builtin).
+.TP
+.B !\fIn\fR
+Refer to command line
+.IR n .
+.TP
+.B !\-\fIn\fR
+Refer to the current command minus
+.IR n .
+.TP
+.B !!
+Refer to the previous command.  This is a synonym for `!\-1'.
+.TP
+.B !\fIstring\fR
+Refer to the most recent command preceding the current position in the
+history list starting with
+.IR string .
+.TP
+.B !?\fIstring\fR\fB[?]\fR
+Refer to the most recent command preceding the current position in the
+history list containing
+.IR string .
+The trailing \fB?\fP may be omitted if
+.I string
+is followed immediately by a newline.
+.TP
+.B \d\s+2^\s-2\u\fIstring1\fP\d\s+2^\s-2\u\fIstring2\fP\d\s+2^\s-2\u
+Quick substitution.  Repeat the previous command, replacing
+.I string1
+with
+.IR string2 .
+Equivalent to
+``!!:s/\fIstring1\fP/\fIstring2\fP/''
+(see \fBModifiers\fP below).
+.TP
+.B !#
+The entire command line typed so far.
+.PD
+.SS Word Designators
+.PP
+Word designators are used to select desired words from the event.
+A 
+.B :
+separates the event specification from the word designator.
+It may be omitted if the word designator begins with a
+.BR ^ ,
+.BR $ ,
+.BR * ,
+.BR \- ,
+or
+.BR % .
+Words are numbered from the beginning of the line,
+with the first word being denoted by 0 (zero).
+Words are inserted into the current line separated by single spaces.
+.PP
+.PD 0
+.TP
+.B 0 (zero)
+The zeroth word.  For the shell, this is the command
+word.
+.TP
+.I n
+The \fIn\fRth word.
+.TP
+.B ^
+The first argument.  That is, word 1.
+.TP
+.B $
+The last argument.
+.TP
+.B %
+The word matched by the most recent `?\fIstring\fR?' search.
+.TP
+.I x\fB\-\fPy
+A range of words; `\-\fIy\fR' abbreviates `0\-\fIy\fR'.
+.TP
+.B *
+All of the words but the zeroth.  This is a synonym
+for `\fI1\-$\fP'.  It is not an error to use
+.B *
+if there is just one
+word in the event; the empty string is returned in that case.
+.TP
+.B x*
+Abbreviates \fIx\-$\fP.
+.TP
+.B x\-
+Abbreviates \fIx\-$\fP like \fBx*\fP, but omits the last word.
+.PD
+.PP
+If a word designator is supplied without an event specification, the
+previous command is used as the event.
+.SS Modifiers
+.PP
+After the optional word designator, there may appear a sequence of
+one or more of the following modifiers, each preceded by a `:'.
+.PP
+.PD 0
+.PP
+.TP
+.B h
+Remove a trailing filename component, leaving only the head.
+.TP
+.B t
+Remove all leading filename components, leaving the tail.
+.TP
+.B r
+Remove a trailing suffix of the form \fI.xxx\fP, leaving the
+basename.
+.TP
+.B e
+Remove all but the trailing suffix.
+.TP
+.B p
+Print the new command but do not execute it.
+.TP
+.B q
+Quote the substituted words, escaping further substitutions.
+.TP
+.B x
+Quote the substituted words as with
+.BR q ,
+but break into words at
+.B blanks
+and newlines.
+.TP
+.B s/\fIold\fP/\fInew\fP/
+Substitute
+.I new
+for the first occurrence of
+.I old
+in the event line.  Any delimiter can be used in place of /.  The
+final delimiter is optional if it is the last character of the
+event line.  The delimiter may be quoted in
+.I old
+and
+.I new
+with a single backslash.  If & appears in
+.IR new ,
+it is replaced by
+.IR old .
+A single backslash will quote the &.  If
+.I old
+is null, it is set to the last
+.I old
+substituted, or, if no previous history substitutions took place,
+the last
+.I string
+in a
+.B !?\fIstring\fR\fB[?]\fR
+search.
+.TP
+.B &
+Repeat the previous substitution.
+.TP
+.B g
+Cause changes to be applied over the entire event line.  This is
+used in conjunction with `\fB:s\fP' (e.g., `\fB:gs/\fIold\fP/\fInew\fP/\fR')
+or `\fB:&\fP'.  If used with
+`\fB:s\fP', any delimiter can be used
+in place of /, and the final delimiter is optional
+if it is the last character of the event line.
+An \fBa\fP may be used as a synonym for \fBg\fP.
+.TP
+.B G
+Apply the following `\fBs\fP' modifier once to each word in the event line.
+.PD
+.SH "SHELL BUILTIN COMMANDS"
+.\" start of bash_builtins
+.zZ
+.PP
+Unless otherwise noted, each builtin command documented in this
+section as accepting options preceded by
+.B \-
+accepts
+.B \-\-
+to signify the end of the options.
+The \fB:\fP, \fBtrue\fP, \fBfalse\fP, and \fBtest\fP builtins
+do not accept options and do not treat \fB\-\-\fP specially.
+The \fBexit\fP, \fBlogout\fP, \fBbreak\fP, \fBcontinue\fP, \fBlet\fP,
+and \fBshift\fP builtins accept and process arguments beginning with
+\fB\-\fP without requiring \fB\-\-\fP.
+Other builtins that accept arguments but are not specified as accepting
+options interpret arguments beginning with \fB\-\fP as invalid options and
+require \fB\-\-\fP to prevent this interpretation.
+.sp .5
+.PD 0
+.TP
+\fB:\fP [\fIarguments\fP]
+.PD
+No effect; the command does nothing beyond expanding
+.I arguments
+and performing any specified
+redirections.  A zero exit code is returned.
+.TP
+\fB .\| \fP \fIfilename\fP [\fIarguments\fP]
+.PD 0
+.TP
+\fBsource\fP \fIfilename\fP [\fIarguments\fP]
+.PD
+Read and execute commands from
+.I filename
+in the current
+shell environment and return the exit status of the last command
+executed from
+.IR filename .
+If
+.I filename
+does not contain a slash, filenames in
+.SM
+.B PATH
+are used to find the directory containing
+.IR filename .
+The file searched for in
+.SM
+.B PATH
+need not be executable.
+When \fBbash\fP is not in \fIposix mode\fP, the current directory is
+searched if no file is found in
+.SM
+.BR PATH .
+If the
+.B sourcepath
+option to the
+.B shopt
+builtin command is turned off, the
+.SM
+.B PATH
+is not searched.
+If any \fIarguments\fP are supplied, they become the positional
+parameters when \fIfilename\fP is executed.  Otherwise the positional
+parameters are unchanged.
+The return status is the status of the last command exited within
+the script (0 if no commands are executed), and false if
+.I filename
+is not found or cannot be read.
+.TP
+\fBalias\fP [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...]
+\fBAlias\fP with no arguments or with the
+.B \-p
+option prints the list of aliases in the form
+\fBalias\fP \fIname\fP=\fIvalue\fP on standard output.
+When arguments are supplied, an alias is defined for
+each \fIname\fP whose \fIvalue\fP is given.
+A trailing space in  \fIvalue\fP causes the next word to be
+checked for alias substitution when the alias is expanded.
+For each \fIname\fP in the argument list for which no \fIvalue\fP
+is supplied, the name and value of the alias is printed.
+\fBAlias\fP returns true unless a \fIname\fP is given for which
+no alias has been defined.
+.TP
+\fBbg\fP [\fIjobspec\fP ...]
+Resume each suspended job \fIjobspec\fP in the background, as if it
+had been started with
+.BR & .
+If
+.I jobspec
+is not present, the shell's notion of the \fIcurrent job\fP is used.
+.B bg
+.I jobspec
+returns 0 unless run when job control is disabled or, when run with
+job control enabled, any specified \fIjobspec\fP was not found
+or was started without job control.
+.TP
+\fBbind\fP [\fB\-m\fP \fIkeymap\fP] [\fB\-lpsvPSVX\fP]
+.PD 0
+.TP
+\fBbind\fP [\fB\-m\fP \fIkeymap\fP] [\fB\-q\fP \fIfunction\fP] [\fB\-u\fP \fIfunction\fP] [\fB\-r\fP \fIkeyseq\fP]
+.TP
+\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fB\-f\fP \fIfilename\fP
+.TP
+\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fB\-x\fP \fIkeyseq\fP:\fIshell\-command\fP
+.TP
+\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fIkeyseq\fP:\fIfunction\-name\fP
+.TP
+\fBbind\fP \fIreadline\-command\fP
+.PD
+Display current
+.B readline
+key and function bindings, bind a key sequence to a
+.B readline
+function or macro, or set a
+.B readline
+variable.
+Each non-option argument is a command as it would appear in
+.IR .inputrc ,
+but each binding or command must be passed as a separate argument;
+e.g., '"\eC\-x\eC\-r": re\-read\-init\-file'.
+Options, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-m \fIkeymap\fP
+Use
+.I keymap
+as the keymap to be affected by the subsequent bindings.
+Acceptable
+.I keymap
+names are
+\fIemacs, emacs\-standard, emacs\-meta, emacs\-ctlx, vi,
+vi\-move, vi\-command\fP, and
+.IR vi\-insert .
+\fIvi\fP is equivalent to \fIvi\-command\fP; \fIemacs\fP is
+equivalent to \fIemacs\-standard\fP.
+.TP
+.B \-l
+List the names of all \fBreadline\fP functions.
+.TP
+.B \-p
+Display \fBreadline\fP function names and bindings in such a way
+that they can be re-read.
+.TP
+.B \-P
+List current \fBreadline\fP function names and bindings.
+.TP
+.B \-s
+Display \fBreadline\fP key sequences bound to macros and the strings
+they output in such a way that they can be re-read.
+.TP
+.B \-S
+Display \fBreadline\fP key sequences bound to macros and the strings
+they output.
+.TP
+.B \-v
+Display \fBreadline\fP variable names and values in such a way that they
+can be re-read.
+.TP
+.B \-V
+List current \fBreadline\fP variable names and values.
+.TP
+.B \-f \fIfilename\fP
+Read key bindings from \fIfilename\fP.
+.TP
+.B \-q \fIfunction\fP
+Query about which keys invoke the named \fIfunction\fP.
+.TP
+.B \-u \fIfunction\fP
+Unbind all keys bound to the named \fIfunction\fP.
+.TP
+.B \-r \fIkeyseq\fP
+Remove any current binding for \fIkeyseq\fP.
+.TP
+.B \-x \fIkeyseq\fP:\fIshell\-command\fP
+Cause \fIshell\-command\fP to be executed whenever \fIkeyseq\fP is
+entered.
+When \fIshell\-command\fP is executed, the shell sets the
+.SM
+.B READLINE_LINE
+variable to the contents of the \fBreadline\fP line buffer and the
+.SM
+.B READLINE_POINT
+variable to the current location of the insertion point.
+If the executed command changes the value of
+.SM
+.B READLINE_LINE
+or
+.SM
+.BR READLINE_POINT ,
+those new values will be reflected in the editing state.
+.TP
+.B \-X
+List all key sequences bound to shell commands and the associated commands
+in a format that can be reused as input.
+.PD
+.PP
+The return value is 0 unless an unrecognized option is given or an
+error occurred.
+.RE
+.TP
+\fBbreak\fP [\fIn\fP]
+Exit from within a
+.BR for ,
+.BR while ,
+.BR until ,
+or
+.B select
+loop.  If \fIn\fP is specified, break \fIn\fP levels.
+.I n
+must be \(>= 1.  If
+.I n
+is greater than the number of enclosing loops, all enclosing loops
+are exited.
+The return value is 0 unless \fIn\fP is not greater than or equal to 1.
+.TP
+\fBbuiltin\fP \fIshell\-builtin\fP [\fIarguments\fP]
+Execute the specified shell builtin, passing it
+.IR arguments ,
+and return its exit status.
+This is useful when defining a
+function whose name is the same as a shell builtin,
+retaining the functionality of the builtin within the function.
+The \fBcd\fP builtin is commonly redefined this way.
+The return status is false if
+.I shell\-builtin
+is not a shell builtin command.
+.TP
+\fBcaller\fP [\fIexpr\fP]
+Returns the context of any active subroutine call (a shell function or
+a script executed with the \fB.\fP or \fBsource\fP builtins).
+Without \fIexpr\fP, \fBcaller\fP displays the line number and source
+filename of the current subroutine call.
+If a non-negative integer is supplied as \fIexpr\fP, \fBcaller\fP 
+displays the line number, subroutine name, and source file corresponding
+to that position in the current execution call stack.  This extra
+information may be used, for example, to print a stack trace.  The
+current frame is frame 0.
+The return value is 0 unless the shell is not executing a subroutine
+call or \fIexpr\fP does not correspond to a valid position in the
+call stack.
+.TP
+\fBcd\fP [\fB\-L\fP|[\fB\-P\fP [\fB\-e\fP]]] [\fIdir\fP]
+Change the current directory to \fIdir\fP.
+if \fIdir\fP is not supplied, the value of the
+.SM
+.B HOME
+shell variable is the default.
+Any additional arguments following \fIdir\fP are ignored.
+The variable
+.SM
+.B CDPATH
+defines the search path for the directory containing
+.IR dir :
+each directory name in
+.SM
+.B CDPATH
+is searched for \fIdir\fP.
+Alternative directory names in
+.SM
+.B CDPATH
+are separated by a colon (:).  A null directory name in
+.SM
+.B CDPATH
+is the same as the current directory, i.e., ``\fB.\fP''.  If
+.I dir
+begins with a slash (/),
+then
+.SM
+.B CDPATH
+is not used. The
+.B \-P
+option causes \fBcd\fP to use the physical directory structure
+by resolving symbolic links while traversing \fIdir\fP and
+before processing instances of \fI..\fP in \fIdir\fP (see also the
+.B \-P
+option to the
+.B set
+builtin command); the
+.B \-L
+option forces symbolic links to be followed by resolving the link
+after processing instances of \fI..\fP in \fIdir\fP.
+If \fI..\fP appears in \fIdir\fP, it is processed by removing the
+immediately previous pathname component from \fIdir\fP, back to a slash
+or the beginning of \fIdir\fP.
+If the
+.B \-e
+option is supplied with
+.BR \-P ,
+and the current working directory cannot be successfully determined
+after a successful directory change, \fBcd\fP will return an unsuccessful
+status.
+An argument of
+.B \-
+is converted to
+.SM
+.B $OLDPWD
+before the directory change is attempted.
+If a non-empty directory name from
+.SM
+.B CDPATH
+is used, or if
+\fB\-\fP is the first argument, and the directory change is
+successful, the absolute pathname of the new working directory is
+written to the standard output.
+The return value is true if the directory was successfully changed;
+false otherwise.
+.TP
+\fBcommand\fP [\fB\-pVv\fP] \fIcommand\fP [\fIarg\fP ...]
+Run
+.I command
+with
+.I args
+suppressing the normal shell function lookup. Only builtin
+commands or commands found in the
+.SM
+.B PATH
+are executed.  If the
+.B \-p
+option is given, the search for
+.I command
+is performed using a default value for
+.SM
+.B PATH
+that is guaranteed to find all of the standard utilities.
+If either the
+.B \-V
+or
+.B \-v
+option is supplied, a description of
+.I command
+is printed.  The
+.B \-v
+option causes a single word indicating the command or filename
+used to invoke
+.I command
+to be displayed; the
+.B \-V
+option produces a more verbose description.
+If the
+.B \-V
+or
+.B \-v
+option is supplied, the exit status is 0 if
+.I command
+was found, and 1 if not.  If neither option is supplied and
+an error occurred or
+.I command
+cannot be found, the exit status is 127.  Otherwise, the exit status of the
+.B command
+builtin is the exit status of
+.IR command .
+.TP
+\fBcompgen\fP [\fIoption\fP] [\fIword\fP]
+Generate possible completion matches for \fIword\fP according to
+the \fIoption\fPs, which may be any option accepted by the
+.B complete
+builtin with the exception of \fB\-p\fP and \fB\-r\fP, and write
+the matches to the standard output.
+When using the \fB\-F\fP or \fB\-C\fP options, the various shell variables
+set by the programmable completion facilities, while available, will not
+have useful values.
+.sp 1
+The matches will be generated in the same way as if the programmable
+completion code had generated them directly from a completion specification
+with the same flags.
+If \fIword\fP is specified, only those completions matching \fIword\fP
+will be displayed.
+.sp 1
+The return value is true unless an invalid option is supplied, or no
+matches were generated.
+.TP
+\fBcomplete\fP [\fB\-abcdefgjksuv\fP] [\fB\-o\fP \fIcomp-option\fP] [\fB\-DE\fP] [\fB\-A\fP \fIaction\fP] [\fB\-G\fP \fIglobpat\fP] [\fB\-W\fP \fIwordlist\fP] [\fB\-F\fP \fIfunction\fP] [\fB\-C\fP \fIcommand\fP]
+.br
+[\fB\-X\fP \fIfilterpat\fP] [\fB\-P\fP \fIprefix\fP] [\fB\-S\fP \fIsuffix\fP] \fIname\fP [\fIname ...\fP]
+.PD 0
+.TP
+\fBcomplete\fP \fB\-pr\fP [\fB\-DE\fP] [\fIname\fP ...]
+.PD
+Specify how arguments to each \fIname\fP should be completed.
+If the \fB\-p\fP option is supplied, or if no options are supplied,
+existing completion specifications are printed in a way that allows
+them to be reused as input.
+The \fB\-r\fP option removes a completion specification for
+each \fIname\fP, or, if no \fIname\fPs are supplied, all
+completion specifications.
+The \fB\-D\fP option indicates that the remaining options and actions should
+apply to the ``default'' command completion; that is, completion attempted
+on a command for which no completion has previously been defined.
+The \fB\-E\fP option indicates that the remaining options and actions should
+apply to ``empty'' command completion; that is, completion attempted on a
+blank line.
+.sp 1
+The process of applying these completion specifications when word completion
+is attempted is described above under \fBProgrammable Completion\fP.
+.sp 1
+Other options, if specified, have the following meanings.
+The arguments to the \fB\-G\fP, \fB\-W\fP, and \fB\-X\fP options
+(and, if necessary, the \fB\-P\fP and \fB\-S\fP options)
+should be quoted to protect them from expansion before the
+.B complete
+builtin is invoked.
+.RS
+.PD 0
+.TP 8
+\fB\-o\fP \fIcomp-option\fP
+The \fIcomp-option\fP controls several aspects of the compspec's behavior
+beyond the simple generation of completions.
+\fIcomp-option\fP may be one of:
+.RS
+.TP 8
+.B bashdefault
+Perform the rest of the default \fBbash\fP completions if the compspec
+generates no matches.
+.TP 8
+.B default
+Use readline's default filename completion if the compspec generates
+no matches.
+.TP 8
+.B dirnames
+Perform directory name completion if the compspec generates no matches.
+.TP 8
+.B filenames
+Tell readline that the compspec generates filenames, so it can perform any
+filename\-specific processing (like adding a slash to directory names,
+quoting special characters, or suppressing trailing spaces).
+Intended to be used with shell functions.
+.TP 8
+.B noquote
+Tell readline not to quote the completed words if they are filenames
+(quoting filenames is the default).
+.TP 8
+.B nospace
+Tell readline not to append a space (the default) to words completed at
+the end of the line.
+.TP 8
+.B plusdirs
+After any matches defined by the compspec are generated, 
+directory name completion is attempted and any
+matches are added to the results of the other actions.
+.RE
+.TP 8
+\fB\-A\fP \fIaction\fP
+The \fIaction\fP may be one of the following to generate a list of possible
+completions:
+.RS
+.TP 8
+.B alias
+Alias names.  May also be specified as \fB\-a\fP.
+.TP 8
+.B arrayvar
+Array variable names.
+.TP 8
+.B binding
+\fBReadline\fP key binding names.
+.TP 8
+.B builtin
+Names of shell builtin commands.  May also be specified as \fB\-b\fP.
+.TP 8
+.B command
+Command names.  May also be specified as \fB\-c\fP.
+.TP 8
+.B directory
+Directory names.  May also be specified as \fB\-d\fP.
+.TP 8
+.B disabled
+Names of disabled shell builtins.
+.TP 8
+.B enabled
+Names of enabled shell builtins.
+.TP 8
+.B export
+Names of exported shell variables.  May also be specified as \fB\-e\fP.
+.TP 8
+.B file
+File names.  May also be specified as \fB\-f\fP.
+.TP 8
+.B function
+Names of shell functions.
+.TP 8
+.B group
+Group names.  May also be specified as \fB\-g\fP.
+.TP 8
+.B helptopic
+Help topics as accepted by the \fBhelp\fP builtin.
+.TP 8
+.B hostname
+Hostnames, as taken from the file specified by the
+.SM
+.B HOSTFILE
+shell variable.
+.TP 8
+.B job
+Job names, if job control is active.  May also be specified as \fB\-j\fP.
+.TP 8
+.B keyword
+Shell reserved words.  May also be specified as \fB\-k\fP.
+.TP 8
+.B running
+Names of running jobs, if job control is active.
+.TP 8
+.B service
+Service names.  May also be specified as \fB\-s\fP.
+.TP 8
+.B setopt
+Valid arguments for the \fB\-o\fP option to the \fBset\fP builtin.
+.TP 8
+.B shopt
+Shell option names as accepted by the \fBshopt\fP builtin.
+.TP 8
+.B signal
+Signal names.
+.TP 8
+.B stopped
+Names of stopped jobs, if job control is active.
+.TP 8
+.B user
+User names.  May also be specified as \fB\-u\fP.
+.TP 8
+.B variable
+Names of all shell variables.  May also be specified as \fB\-v\fP.
+.RE
+.TP 8
+\fB\-C\fP \fIcommand\fP
+\fIcommand\fP is executed in a subshell environment, and its output is
+used as the possible completions.
+.TP 8
+\fB\-F\fP \fIfunction\fP
+The shell function \fIfunction\fP is executed in the current shell
+environment.
+When the function is executed,
+the first argument (\fB$1\fP) is the name of the command whose arguments are
+being completed,
+the second argument (\fB$2\fP) is the word being completed,
+and the third argument (\fB$3\fP) is the word preceding the word being
+completed on the current command line.
+When it finishes, the possible completions are retrieved from the value
+of the
+.SM
+.B COMPREPLY
+array variable.
+.TP 8
+\fB\-G\fP \fIglobpat\fP
+The pathname expansion pattern \fIglobpat\fP is expanded to generate
+the possible completions.
+.TP 8
+\fB\-P\fP \fIprefix\fP
+\fIprefix\fP is added at the beginning of each possible completion
+after all other options have been applied.
+.TP 8
+\fB\-S\fP \fIsuffix\fP
+\fIsuffix\fP is appended to each possible completion
+after all other options have been applied.
+.TP 8
+\fB\-W\fP \fIwordlist\fP
+The \fIwordlist\fP is split using the characters in the
+.SM
+.B IFS
+special variable as delimiters, and each resultant word is expanded.
+The possible completions are the members of the resultant list which
+match the word being completed.
+.TP 8
+\fB\-X\fP \fIfilterpat\fP
+\fIfilterpat\fP is a pattern as used for pathname expansion.
+It is applied to the list of possible completions generated by the
+preceding options and arguments, and each completion matching
+\fIfilterpat\fP is removed from the list.
+A leading \fB!\fP in \fIfilterpat\fP negates the pattern; in this
+case, any completion not matching \fIfilterpat\fP is removed.
+.PD
+.PP
+The return value is true unless an invalid option is supplied, an option
+other than \fB\-p\fP or \fB\-r\fP is supplied without a \fIname\fP
+argument, an attempt is made to remove a completion specification for
+a \fIname\fP for which no specification exists, or
+an error occurs adding a completion specification.
+.RE
+.TP
+\fBcompopt\fP [\fB\-o\fP \fIoption\fP] [\fB\-DE\fP] [\fB+o\fP \fIoption\fP] [\fIname\fP]
+Modify completion options for each \fIname\fP according to the
+\fIoption\fPs, or for the
+currently-executing completion if no \fIname\fPs are supplied.
+If no \fIoption\fPs are given, display the completion options for each
+\fIname\fP or the current completion.
+The possible values of \fIoption\fP are those valid for the \fBcomplete\fP
+builtin described above.
+The \fB\-D\fP option indicates that the remaining options should
+apply to the ``default'' command completion; that is, completion attempted
+on a command for which no completion has previously been defined.
+The \fB\-E\fP option indicates that the remaining options should
+apply to ``empty'' command completion; that is, completion attempted on a
+blank line.
+.sp 1
+The return value is true unless an invalid option is supplied, an attempt
+is made to modify the options for a \fIname\fP for which no completion
+specification exists, or an output error occurs.
+.TP
+\fBcontinue\fP [\fIn\fP]
+Resume the next iteration of the enclosing
+.BR for ,
+.BR while ,
+.BR until ,
+or
+.B select
+loop.
+If
+.I n
+is specified, resume at the \fIn\fPth enclosing loop.
+.I n
+must be \(>= 1.  If
+.I n
+is greater than the number of enclosing loops, the last enclosing loop
+(the ``top-level'' loop) is resumed.
+The return value is 0 unless \fIn\fP is not greater than or equal to 1.
+.TP
+\fBdeclare\fP [\fB\-aAfFgilnrtux\fP] [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...]
+.PD 0
+.TP
+\fBtypeset\fP [\fB\-aAfFgilnrtux\fP] [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...]
+.PD
+Declare variables and/or give them attributes.
+If no \fIname\fPs are given then display the values of variables.
+The
+.B \-p
+option will display the attributes and values of each
+.IR name .
+When
+.B \-p
+is used with \fIname\fP arguments, additional options are ignored.
+When
+.B \-p
+is supplied without \fIname\fP arguments, it will display the attributes
+and values of all variables having the attributes specified by the
+additional options.
+If no other options are supplied with \fB\-p\fP, \fBdeclare\fP will display
+the attributes and values of all shell variables.  The \fB\-f\fP option
+will restrict the display to shell functions.
+The
+.B \-F
+option inhibits the display of function definitions; only the
+function name and attributes are printed.
+If the \fBextdebug\fP shell option is enabled using \fBshopt\fP,
+the source file name and line number where the function is defined
+are displayed as well.  The
+.B \-F
+option implies
+.BR \-f .
+The
+.B \-g
+option forces variables to be created or modified at the global scope,
+even when \fBdeclare\fP is executed in a shell function.
+It is ignored in all other cases.
+The following options can
+be used to restrict output to variables with the specified attribute or
+to give variables attributes:
+.RS
+.PD 0
+.TP
+.B \-a
+Each \fIname\fP is an indexed array variable (see
+.B Arrays
+above).
+.TP
+.B \-A
+Each \fIname\fP is an associative array variable (see
+.B Arrays
+above).
+.TP
+.B \-f
+Use function names only.
+.TP
+.B \-i
+The variable is treated as an integer; arithmetic evaluation (see
+.SM
+.B "ARITHMETIC EVALUATION"
+above) is performed when the variable is assigned a value.
+.TP
+.B \-l
+When the variable is assigned a value, all upper-case characters are
+converted to lower-case.
+The upper-case attribute is disabled.
+.TP
+.B \-n
+Give each \fIname\fP the \fInameref\fP attribute, making
+it a name reference to another variable.
+That other variable is defined by the value of \fIname\fP.
+All references and assignments to \fIname\fP, except for changing the
+\fB\-n\fP attribute itself, are performed on the variable referenced by
+\fIname\fP's value.
+The \fB\-n\fP attribute cannot be applied to array variables.
+.TP
+.B \-r
+Make \fIname\fPs readonly.  These names cannot then be assigned values
+by subsequent assignment statements or unset.
+.TP
+.B \-t
+Give each \fIname\fP the \fItrace\fP attribute.
+Traced functions inherit the \fBDEBUG\fP and \fBRETURN\fP traps from
+the calling shell.
+The trace attribute has no special meaning for variables.
+.TP
+.B \-u
+When the variable is assigned a value, all lower-case characters are
+converted to upper-case.
+The lower-case attribute is disabled.
+.TP
+.B \-x
+Mark \fIname\fPs for export to subsequent commands via the environment.
+.PD
+.PP
+Using `+' instead of `\-'
+turns off the attribute instead,
+with the exceptions that \fB+a\fP
+may not be used to destroy an array variable and \fB+r\fP will not
+remove the readonly attribute.
+When used in a function,
+.B declare
+and
+.B typeset
+make each
+\fIname\fP local, as with the
+.B local
+command,
+unless the \fB\-g\fP option is supplied.
+If a variable name is followed by =\fIvalue\fP, the value of
+the variable is set to \fIvalue\fP.
+The return value is 0 unless an invalid option is encountered,
+an attempt is made to define a function using
+.if n ``\-f foo=bar'',
+.if t \f(CW\-f foo=bar\fP,
+an attempt is made to assign a value to a readonly variable,
+an attempt is made to assign a value to an array variable without
+using the compound assignment syntax (see
+.B Arrays
+above), one of the \fInames\fP is not a valid shell variable name,
+an attempt is made to turn off readonly status for a readonly variable,
+an attempt is made to turn off array status for an array variable,
+or an attempt is made to display a non-existent function with \fB\-f\fP.
+.RE
+.TP
+.B dirs [\fB\-clpv\fP] [+\fIn\fP] [\-\fIn\fP]
+Without options, displays the list of currently remembered directories.
+The default display is on a single line with directory names separated
+by spaces.
+Directories are added to the list with the 
+.B pushd
+command; the
+.B popd
+command removes entries from the list.
+.RS
+.PD 0
+.TP
+.B \-c
+Clears the directory stack by deleting all of the entries.
+.TP
+.B \-l
+Produces a listing using full pathnames;
+the default listing format uses a tilde to denote the home directory.
+.TP
+.B \-p
+Print the directory stack with one entry per line.
+.TP
+.B \-v
+Print the directory stack with one entry per line,
+prefixing each entry with its index in the stack.
+.TP
+\fB+\fP\fIn\fP
+Displays the \fIn\fPth entry counting from the left of the list
+shown by
+.B dirs
+when invoked without options, starting with zero.
+.TP
+\fB\-\fP\fIn\fP
+Displays the \fIn\fPth entry counting from the right of the list
+shown by
+.B dirs
+when invoked without options, starting with zero.
+.PD
+.PP
+The return value is 0 unless an
+invalid option is supplied or \fIn\fP indexes beyond the end
+of the directory stack.
+.RE
+.TP
+\fBdisown\fP [\fB\-ar\fP] [\fB\-h\fP] [\fIjobspec\fP ...]
+Without options, remove each
+.I jobspec
+from the table of active jobs.
+If
+.I jobspec
+is not present, and neither \fB\-a\fP nor \fB\-r\fP is supplied,
+the shell's notion of the \fIcurrent job\fP is used.
+If the \fB\-h\fP option is given, each
+.I jobspec
+is not removed from the table, but is marked so that
+.SM
+.B SIGHUP
+is not sent to the job if the shell receives a
+.SM
+.BR SIGHUP .
+If no
+.I jobspec
+is present, and neither the
+.B \-a
+nor the
+.B \-r
+option is supplied, the \fIcurrent job\fP is used.
+If no
+.I jobspec
+is supplied, the
+.B \-a
+option means to remove or mark all jobs; the
+.B \-r
+option without a
+.I jobspec
+argument restricts operation to running jobs.
+The return value is 0 unless a
+.I jobspec
+does not specify a valid job.
+.TP
+\fBecho\fP [\fB\-neE\fP] [\fIarg\fP ...]
+Output the \fIarg\fPs, separated by spaces, followed by a newline.
+The return status is 0 unless a write error occurs.
+If \fB\-n\fP is specified, the trailing newline is
+suppressed.  If the \fB\-e\fP option is given, interpretation of
+the following backslash-escaped characters is enabled.  The
+.B \-E
+option disables the interpretation of these escape characters,
+even on systems where they are interpreted by default.
+The \fBxpg_echo\fP shell option may be used to
+dynamically determine whether or not \fBecho\fP expands these
+escape characters by default.
+.B echo
+does not interpret \fB\-\-\fP to mean the end of options.
+.B echo
+interprets the following escape sequences:
+.RS
+.PD 0
+.TP
+.B \ea
+alert (bell)
+.TP
+.B \eb
+backspace
+.TP
+.B \ec
+suppress further output
+.TP
+.B \ee
+.TP
+.B \eE
+an escape character
+.TP
+.B \ef
+form feed
+.TP
+.B \en
+new line
+.TP
+.B \er
+carriage return
+.TP
+.B \et
+horizontal tab
+.TP
+.B \ev
+vertical tab
+.TP
+.B \e\e
+backslash
+.TP
+.B \e0\fInnn\fP
+the eight-bit character whose value is the octal value \fInnn\fP
+(zero to three octal digits)
+.TP
+.B \ex\fIHH\fP
+the eight-bit character whose value is the hexadecimal value \fIHH\fP
+(one or two hex digits)
+.TP
+.B \eu\fIHHHH\fP
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+\fIHHHH\fP (one to four hex digits)
+.TP
+.B \eU\fIHHHHHHHH\fP
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+\fIHHHHHHHH\fP (one to eight hex digits)
+.PD
+.RE
+.TP
+\fBenable\fP [\fB\-a\fP] [\fB\-dnps\fP] [\fB\-f\fP \fIfilename\fP] [\fIname\fP ...]
+Enable and disable builtin shell commands.
+Disabling a builtin allows a disk command which has the same name
+as a shell builtin to be executed without specifying a full pathname,
+even though the shell normally searches for builtins before disk commands.
+If \fB\-n\fP is used, each \fIname\fP
+is disabled; otherwise,
+\fInames\fP are enabled.  For example, to use the
+.B test
+binary found via the
+.SM
+.B PATH
+instead of the shell builtin version, run
+.if t \f(CWenable -n test\fP.
+.if n ``enable -n test''.
+The
+.B \-f
+option means to load the new builtin command
+.I name
+from shared object
+.IR filename ,
+on systems that support dynamic loading.  The
+.B \-d
+option will delete a builtin previously loaded with
+.BR \-f .
+If no \fIname\fP arguments are given, or if the
+.B \-p
+option is supplied, a list of shell builtins is printed.
+With no other option arguments, the list consists of all enabled
+shell builtins.
+If \fB\-n\fP is supplied, only disabled builtins are printed.
+If \fB\-a\fP is supplied, the list printed includes all builtins, with an
+indication of whether or not each is enabled.
+If \fB\-s\fP is supplied, the output is restricted to the POSIX
+\fIspecial\fP builtins.
+The return value is 0 unless a
+.I name
+is not a shell builtin or there is an error loading a new builtin
+from a shared object.
+.TP
+\fBeval\fP [\fIarg\fP ...]
+The \fIarg\fPs are read and concatenated together into a single
+command.  This command is then read and executed by the shell, and
+its exit status is returned as the value of
+.BR eval .
+If there are no
+.IR args ,
+or only null arguments,
+.B eval
+returns 0.
+.TP
+\fBexec\fP [\fB\-cl\fP] [\fB\-a\fP \fIname\fP] [\fIcommand\fP [\fIarguments\fP]]
+If
+.I command
+is specified, it replaces the shell.
+No new process is created.  The
+.I arguments
+become the arguments to \fIcommand\fP.
+If the
+.B \-l
+option is supplied,
+the shell places a dash at the beginning of the zeroth argument passed to 
+.IR command .
+This is what
+.IR login (1)
+does.  The
+.B \-c
+option causes
+.I command
+to be executed with an empty environment.  If
+.B \-a
+is supplied, the shell passes
+.I name
+as the zeroth argument to the executed command.
+If
+.I command
+cannot be executed for some reason, a non-interactive shell exits,
+unless the
+.B execfail
+shell option
+is enabled.  In that case, it returns failure.
+An interactive shell returns failure if the file cannot be executed.
+If
+.I command
+is not specified, any redirections take effect in the current shell,
+and the return status is 0.  If there is a redirection error, the
+return status is 1.
+.TP
+\fBexit\fP [\fIn\fP]
+Cause the shell to exit
+with a status of \fIn\fP.  If
+.I n
+is omitted, the exit status
+is that of the last command executed.
+A trap on
+.SM
+.B EXIT
+is executed before the shell terminates.
+.TP
+\fBexport\fP [\fB\-fn\fP\^] [\fIname\fP[=\fIword\fP]] ...
+.PD 0
+.TP
+.B export \-p
+.PD
+The supplied
+.I names
+are marked for automatic export to the environment of
+subsequently executed commands.  If the 
+.B \-f
+option is given,
+the 
+.I names
+refer to functions.
+If no
+.I names
+are given, or if the
+.B \-p
+option is supplied, a list
+of names of all exported variables is printed.
+The
+.B \-n
+option causes the export property to be removed from each
+\fIname\fP.
+If a variable name is followed by =\fIword\fP, the value of
+the variable is set to \fIword\fP.
+.B export
+returns an exit status of 0 unless an invalid option is
+encountered,
+one of the \fInames\fP is not a valid shell variable name, or
+.B \-f
+is supplied with a
+.I name
+that is not a function.
+.TP
+\fBfc\fP [\fB\-e\fP \fIename\fP] [\fB\-lnr\fP] [\fIfirst\fP] [\fIlast\fP]
+.PD 0
+.TP
+\fBfc\fP \fB\-s\fP [\fIpat\fP=\fIrep\fP] [\fIcmd\fP]
+.PD
+The first form selects a range of commands from
+.I first
+to
+.I last
+from the history list and displays or edits and re-executes them.
+.I First
+and
+.I last
+may be specified as a string (to locate the last command beginning
+with that string) or as a number (an index into the history list,
+where a negative number is used as an offset from the current
+command number).  If 
+.I last
+is not specified it is set to
+the current command for listing (so that
+.if n ``fc \-l \-10''
+.if t \f(CWfc \-l \-10\fP
+prints the last 10 commands) and to
+.I first
+otherwise.
+If
+.I first
+is not specified it is set to the previous
+command for editing and \-16 for listing.
+.sp 1
+The
+.B \-n
+option suppresses
+the command numbers when listing.  The
+.B \-r
+option reverses the order of
+the commands.  If the
+.B \-l
+option is given,
+the commands are listed on
+standard output.  Otherwise, the editor given by
+.I ename
+is invoked
+on a file containing those commands.  If
+.I ename
+is not given, the
+value of the
+.SM
+.B FCEDIT
+variable is used, and
+the value of
+.SM
+.B EDITOR
+if
+.SM
+.B FCEDIT
+is not set.  If neither variable is set,
+.FN vi
+is used.  When editing is complete, the edited commands are
+echoed and executed.
+.sp 1
+In the second form, \fIcommand\fP is re-executed after each instance
+of \fIpat\fP is replaced by \fIrep\fP.
+\fICommand\fP is intepreted the same as \fIfirst\fP above.
+A useful alias to use with this is
+.if n ``r="fc -s"'',
+.if t \f(CWr='fc \-s'\fP,
+so that typing
+.if n ``r cc''
+.if t \f(CWr cc\fP
+runs the last command beginning with
+.if n ``cc''
+.if t \f(CWcc\fP
+and typing
+.if n ``r''
+.if t \f(CWr\fP
+re-executes the last command.
+.sp 1
+If the first form is used, the return value is 0 unless an invalid
+option is encountered or
+.I first
+or
+.I last
+specify history lines out of range.
+If the
+.B \-e
+option is supplied, the return value is the value of the last
+command executed or failure if an error occurs with the temporary
+file of commands.  If the second form is used, the return status
+is that of the command re-executed, unless
+.I cmd
+does not specify a valid history line, in which case
+.B fc
+returns failure.
+.TP
+\fBfg\fP [\fIjobspec\fP]
+Resume
+.I jobspec
+in the foreground, and make it the current job.
+If
+.I jobspec
+is not present, the shell's notion of the \fIcurrent job\fP is used.
+The return value is that of the command placed into the foreground,
+or failure if run when job control is disabled or, when run with
+job control enabled, if
+.I jobspec
+does not specify a valid job or
+.I jobspec
+specifies a job that was started without job control.
+.TP
+\fBgetopts\fP \fIoptstring\fP \fIname\fP [\fIargs\fP]
+.B getopts
+is used by shell procedures to parse positional parameters.
+.I optstring
+contains the option characters to be recognized; if a character
+is followed by a colon, the option is expected to have an
+argument, which should be separated from it by white space.
+The colon and question mark characters may not be used as
+option characters.
+Each time it is invoked,
+.B getopts
+places the next option in the shell variable
+.IR name ,
+initializing
+.I name
+if it does not exist,
+and the index of the next argument to be processed into the
+variable
+.SM
+.BR OPTIND .
+.SM
+.B OPTIND
+is initialized to 1 each time the shell or a shell script
+is invoked.  When an option requires an argument,
+.B getopts
+places that argument into the variable
+.SM
+.BR OPTARG .
+The shell does not reset
+.SM
+.B OPTIND
+automatically; it must be manually reset between multiple
+calls to
+.B getopts
+within the same shell invocation if a new set of parameters
+is to be used.
+.sp 1
+When the end of options is encountered, \fBgetopts\fP exits with a
+return value greater than zero.
+.SM
+.B OPTIND
+is set to the index of the first non-option argument,
+and \fIname\fP is set to ?.
+.sp 1
+.B getopts
+normally parses the positional parameters, but if more arguments are
+given in
+.IR args ,
+.B getopts
+parses those instead.
+.sp 1
+.B getopts
+can report errors in two ways.  If the first character of
+.I optstring
+is a colon,
+.I silent
+error reporting is used.  In normal operation, diagnostic messages
+are printed when invalid options or missing option arguments are
+encountered.
+If the variable
+.SM
+.B OPTERR
+is set to 0, no error messages will be displayed, even if the first
+character of 
+.I optstring
+is not a colon.
+.sp 1
+If an invalid option is seen,
+.B getopts
+places ? into
+.I name
+and, if not silent,
+prints an error message and unsets
+.SM
+.BR OPTARG .
+If
+.B getopts
+is silent,
+the option character found is placed in
+.SM
+.B OPTARG
+and no diagnostic message is printed.
+.sp 1
+If a required argument is not found, and
+.B getopts
+is not silent,
+a question mark (\^\fB?\fP\^) is placed in
+.IR name ,
+.SM
+.B OPTARG
+is unset, and a diagnostic message is printed.
+If
+.B getopts
+is silent, then a colon (\^\fB:\fP\^) is placed in
+.I name
+and
+.SM
+.B OPTARG
+is set to the option character found.
+.sp 1
+.B getopts
+returns true if an option, specified or unspecified, is found.
+It returns false if the end of options is encountered or an
+error occurs.
+.TP
+\fBhash\fP [\fB\-lr\fP] [\fB\-p\fP \fIfilename\fP] [\fB\-dt\fP] [\fIname\fP]
+Each time \fBhash\fP is invoked,
+the full pathname of the command 
+.I name
+is determined by searching
+the directories in
+.B $PATH
+and remembered.  Any previously-remembered pathname is discarded.
+If the
+.B \-p
+option is supplied, no path search is performed, and
+.I filename
+is used as the full filename of the command.
+The
+.B \-r
+option causes the shell to forget all
+remembered locations.
+The
+.B \-d
+option causes the shell to forget the remembered location of each \fIname\fP.
+If the
+.B \-t
+option is supplied, the full pathname to which each \fIname\fP corresponds
+is printed.  If multiple \fIname\fP arguments are supplied with \fB\-t\fP,
+the \fIname\fP is printed before the hashed full pathname.
+The
+.B \-l
+option causes output to be displayed in a format that may be reused as input.
+If no arguments are given, or if only \fB\-l\fP is supplied,
+information about remembered commands is printed.
+The return status is true unless a
+.I name
+is not found or an invalid option is supplied.
+.TP
+\fBhelp\fP [\fB\-dms\fP] [\fIpattern\fP]
+Display helpful information about builtin commands.  If
+.I pattern
+is specified,
+.B help
+gives detailed help on all commands matching
+.IR pattern ;
+otherwise help for all the builtins and shell control structures
+is printed.
+.RS
+.PD 0
+.TP
+.B \-d
+Display a short description of each \fIpattern\fP
+.TP
+.B \-m
+Display the description of each \fIpattern\fP in a manpage-like format
+.TP
+.B \-s
+Display only a short usage synopsis for each \fIpattern\fP
+.PD
+.PP
+The return status is 0 unless no command matches
+.IR pattern .
+.RE
+.TP
+\fBhistory [\fIn\fP]
+.PD 0
+.TP
+\fBhistory\fP \fB\-c\fP
+.TP
+\fBhistory \-d\fP \fIoffset\fP
+.TP
+\fBhistory\fP \fB\-anrw\fP [\fIfilename\fP]
+.TP
+\fBhistory\fP \fB\-p\fP \fIarg\fP [\fIarg ...\fP]
+.TP
+\fBhistory\fP \fB\-s\fP \fIarg\fP [\fIarg ...\fP]
+.PD
+With no options, display the command
+history list with line numbers.  Lines listed
+with a 
+.B *
+have been modified.  An argument of
+.I n
+lists only the last
+.I n
+lines.
+If the shell variable
+.SM
+.B HISTTIMEFORMAT
+is set and not null,
+it is used as a format string for \fIstrftime\fP(3) to display
+the time stamp associated with each displayed history entry.
+No intervening blank is printed between the formatted time stamp
+and the history line.
+If \fIfilename\fP is supplied, it is used as the
+name of the history file; if not, the value of
+.SM
+.B HISTFILE
+is used.  Options, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-c
+Clear the history list by deleting all the entries.
+.TP
+\fB\-d\fP \fIoffset\fP
+Delete the history entry at position \fIoffset\fP.
+.TP
+.B \-a
+Append the ``new'' history lines (history lines entered since the
+beginning of the current \fBbash\fP session) to the history file.
+.TP
+.B \-n
+Read the history lines not already read from the history
+file into the current history list.  These are lines
+appended to the history file since the beginning of the
+current \fBbash\fP session.
+.TP
+.B \-r
+Read the contents of the history file
+and append them to the current history list.
+.TP
+.B \-w
+Write the current history list to the history file, overwriting the
+history file's contents.
+.TP
+.B \-p
+Perform history substitution on the following \fIargs\fP and display
+the result on the standard output.
+Does not store the results in the history list.
+Each \fIarg\fP must be quoted to disable normal history expansion.
+.TP
+.B \-s
+Store the
+.I args
+in the history list as a single entry.  The last command in the
+history list is removed before the
+.I args
+are added.
+.PD
+.PP
+If the
+.SM
+.B HISTTIMEFORMAT
+variable is set, the time stamp information
+associated with each history entry is written to the history file,
+marked with the history comment character.
+When the history file is read, lines beginning with the history
+comment character followed immediately by a digit are interpreted
+as timestamps for the previous history line.
+The return value is 0 unless an invalid option is encountered, an
+error occurs while reading or writing the history file, an invalid
+\fIoffset\fP is supplied as an argument to \fB\-d\fP, or the
+history expansion supplied as an argument to \fB\-p\fP fails.
+.RE
+.TP
+\fBjobs\fP [\fB\-lnprs\fP] [ \fIjobspec\fP ... ]
+.PD 0
+.TP
+\fBjobs\fP \fB\-x\fP \fIcommand\fP [ \fIargs\fP ... ]
+.PD
+The first form lists the active jobs.  The options have the following
+meanings:
+.RS
+.PD 0
+.TP
+.B \-l
+List process IDs
+in addition to the normal information.
+.TP
+.B \-n
+Display information only about jobs that have changed status since
+the user was last notified of their status.
+.TP
+.B \-p
+List only the process ID of the job's process group
+leader.
+.TP
+.B \-r
+Display only running jobs.
+.TP
+.B \-s
+Display only stopped jobs.
+.PD
+.PP
+If
+.I jobspec
+is given, output is restricted to information about that job.
+The return status is 0 unless an invalid option is encountered
+or an invalid
+.I jobspec
+is supplied.
+.PP
+If the
+.B \-x
+option is supplied,
+.B jobs
+replaces any
+.I jobspec
+found in
+.I command
+or
+.I args
+with the corresponding process group ID, and executes
+.I command
+passing it
+.IR args ,
+returning its exit status.
+.RE
+.TP
+\fBkill\fP [\fB\-s\fP \fIsigspec\fP | \fB\-n\fP \fIsignum\fP | \fB\-\fP\fIsigspec\fP] [\fIpid\fP | \fIjobspec\fP] ...
+.PD 0
+.TP
+\fBkill\fP \fB\-l\fP [\fIsigspec\fP | \fIexit_status\fP]
+.PD
+Send the signal named by
+.I sigspec
+or
+.I signum
+to the processes named by
+.I pid
+or
+.IR jobspec .
+.I sigspec
+is either a case-insensitive signal name such as
+.SM
+.B SIGKILL
+(with or without the
+.SM
+.B SIG
+prefix) or a signal number;
+.I signum
+is a signal number.
+If
+.I sigspec
+is not present, then
+.SM
+.B SIGTERM
+is assumed.
+An argument of
+.B \-l
+lists the signal names.
+If any arguments are supplied when
+.B \-l
+is given, the names of the signals corresponding to the arguments are
+listed, and the return status is 0.
+The \fIexit_status\fP argument to
+.B \-l
+is a number specifying either a signal number or the exit status of
+a process terminated by a signal.
+.B kill
+returns true if at least one signal was successfully sent, or false
+if an error occurs or an invalid option is encountered.
+.TP
+\fBlet\fP \fIarg\fP [\fIarg\fP ...]
+Each
+.I arg
+is an arithmetic expression to be evaluated (see
+.SM
+.B "ARITHMETIC EVALUATION"
+above).
+If the last
+.I arg
+evaluates to 0,
+.B let
+returns 1; 0 is returned otherwise.
+.TP
+\fBlocal\fP [\fIoption\fP] [\fIname\fP[=\fIvalue\fP] ...]
+For each argument, a local variable named
+.I name 
+is created, and assigned
+.IR value .
+The \fIoption\fP can be any of the options accepted by \fBdeclare\fP.
+When
+.B local
+is used within a function, it causes the variable
+.I name
+to have a visible scope restricted to that function and its children.
+With no operands,
+.B local
+writes a list of local variables to the standard output.  It is
+an error to use
+.B local
+when not within a function.  The return status is 0 unless
+.B local
+is used outside a function, an invalid
+.I name
+is supplied, or
+\fIname\fP is a readonly variable.
+.TP
+.B logout
+Exit a login shell.
+.TP
+\fBmapfile\fP [\fB\-n\fP \fIcount\fP] [\fB\-O\fP \fIorigin\fP] [\fB\-s\fP \fIcount\fP] [\fB\-t\fP] [\fB\-u\fP \fIfd\fP] [\fB\-C\fP \fIcallback\fP] [\fB\-c\fP \fIquantum\fP] [\fIarray\fP]
+.PD 0
+.TP
+\fBreadarray\fP [\fB\-n\fP \fIcount\fP] [\fB\-O\fP \fIorigin\fP] [\fB\-s\fP \fIcount\fP] [\fB\-t\fP] [\fB\-u\fP \fIfd\fP] [\fB\-C\fP \fIcallback\fP] [\fB\-c\fP \fIquantum\fP] [\fIarray\fP]
+.PD
+Read lines from the standard input into the indexed array variable
+.IR array ,
+or from file descriptor 
+.IR fd
+if the 
+.B \-u
+option is supplied.
+The variable
+.SM
+.B MAPFILE
+is the default \fIarray\fP.
+Options, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-n
+Copy at most
+.I count
+lines.  If \fIcount\fP is 0, all lines are copied.
+.TP
+.B \-O
+Begin assigning to
+.I array
+at index
+.IR origin .
+The default index is 0.
+.TP
+.B \-s
+Discard the first \fIcount\fP lines read.
+.TP
+.B \-t
+Remove a trailing newline from each line read.
+.TP
+.B \-u
+Read lines from file descriptor \fIfd\fP instead of the standard input.
+.TP
+.B \-C
+Evaluate
+.I callback
+each time \fIquantum\fP lines are read.  The \fB\-c\fP option specifies
+.IR quantum .
+.TP
+.B \-c
+Specify the number of lines read between each call to
+.IR callback .
+.PD
+.PP
+If
+.B \-C
+is specified without 
+.BR \-c ,
+the default quantum is 5000.
+When \fIcallback\fP is evaluated, it is supplied the index of the next
+array element to be assigned and the line to be assigned to that element
+as additional arguments.
+\fIcallback\fP is evaluated after the line is read but before the 
+array element is assigned.
+.PP
+If not supplied with an explicit origin, \fBmapfile\fP will clear \fIarray\fP
+before assigning to it.
+.PP
+\fBmapfile\fP returns successfully unless an invalid option or option
+argument is supplied, \fIarray\fP is invalid or unassignable, or if
+\fIarray\fP is not an indexed array.
+.RE
+.TP
+\fBpopd\fP [\-\fBn\fP] [+\fIn\fP] [\-\fIn\fP]
+Removes entries from the directory stack.  With no arguments,
+removes the top directory from the stack, and performs a
+.B cd
+to the new top directory.
+Arguments, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-n
+Suppresses the normal change of directory when removing directories
+from the stack, so that only the stack is manipulated.
+.TP
+\fB+\fP\fIn\fP
+Removes the \fIn\fPth entry counting from the left of the list
+shown by
+.BR dirs ,
+starting with zero.  For example:
+.if n ``popd +0''
+.if t \f(CWpopd +0\fP
+removes the first directory,
+.if n ``popd +1''
+.if t \f(CWpopd +1\fP
+the second.
+.TP
+\fB\-\fP\fIn\fP
+Removes the \fIn\fPth entry counting from the right of the list
+shown by
+.BR dirs ,
+starting with zero.  For example:
+.if n ``popd -0''
+.if t \f(CWpopd -0\fP
+removes the last directory,
+.if n ``popd -1''
+.if t \f(CWpopd -1\fP
+the next to last.
+.PD
+.PP
+If the
+.B popd
+command is successful, a 
+.B dirs
+is performed as well, and the return status is 0.
+.B popd
+returns false if an invalid option is encountered, the directory stack
+is empty, a non-existent directory stack entry is specified, or the
+directory change fails.
+.RE
+.TP
+\fBprintf\fP [\fB\-v\fP \fIvar\fP] \fIformat\fP [\fIarguments\fP]
+Write the formatted \fIarguments\fP to the standard output under the
+control of the \fIformat\fP.
+The \fB\-v\fP option causes the output to be assigned to the variable
+\fIvar\fP rather than being printed to the standard output.
+.sp 1
+The \fIformat\fP is a character string which contains three types of objects:
+plain characters, which are simply copied to standard output, character
+escape sequences, which are converted and copied to the standard output, and
+format specifications, each of which causes printing of the next successive
+\fIargument\fP.
+In addition to the standard \fIprintf\fP(1) format specifications,
+\fBprintf\fP interprets the following extensions:
+.RS
+.PD 0
+.TP
+.B %b
+causes
+\fBprintf\fP to expand backslash escape sequences in the corresponding
+\fIargument\fP (except that \fB\ec\fP terminates output, backslashes in
+\fB\e\(aq\fP, \fB\e"\fP, and \fB\e?\fP are not removed, and octal escapes
+beginning with \fB\e0\fP may contain up to four digits).
+.TP
+.B %q
+causes \fBprintf\fP to output the corresponding
+\fIargument\fP in a format that can be reused as shell input.
+.TP
+.B %(\fIdatefmt\fP)T
+causes \fBprintf\fP to output the date-time string resulting from using
+\fIdatefmt\fP as a format string for \fIstrftime\fP(3).
+The corresponding \fIargument\fP is an integer representing the number of
+seconds since the epoch.
+Two special argument values may be used: -1 represents the current
+time, and -2 represents the time the shell was invoked.
+If no argument is specified, conversion behaves as if -1 had been given.
+This is an exception to the usual \fBprintf\fP behavior.
+.PD
+.PP
+Arguments to non-string format specifiers are treated as C constants,
+except that a leading plus or minus sign is allowed, and if the leading
+character is a single or double quote, the value is the ASCII value of
+the following character.
+.PP
+The \fIformat\fP is reused as necessary to consume all of the \fIarguments\fP.
+If the \fIformat\fP requires more \fIarguments\fP than are supplied, the
+extra format specifications behave as if a zero value or null string, as
+appropriate, had been supplied.
+The return value is zero on success, non-zero on failure.
+.RE
+.TP
+\fBpushd\fP [\fB\-n\fP] [+\fIn\fP] [\-\fIn\fP]
+.PD 0
+.TP
+\fBpushd\fP [\fB\-n\fP] [\fIdir\fP]
+.PD
+Adds a directory to the top of the directory stack, or rotates
+the stack, making the new top of the stack the current working
+directory.  With no arguments, exchanges the top two directories
+and returns 0, unless the directory stack is empty.
+Arguments, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-n
+Suppresses the normal change of directory when adding directories
+to the stack, so that only the stack is manipulated.
+.TP
+\fB+\fP\fIn\fP
+Rotates the stack so that the \fIn\fPth directory
+(counting from the left of the list shown by
+.BR dirs ,
+starting with zero)
+is at the top.
+.TP
+\fB\-\fP\fIn\fP
+Rotates the stack so that the \fIn\fPth directory
+(counting from the right of the list shown by
+.BR dirs ,
+starting with zero) is at the top.
+.TP
+.I dir
+Adds
+.I dir
+to the directory stack at the top, making it the
+new current working directory as if it had been supplied as the argument
+to the \fBcd\fP builtin.
+.PD
+.PP
+If the
+.B pushd
+command is successful, a 
+.B dirs
+is performed as well.
+If the first form is used,
+.B pushd
+returns 0 unless the cd to
+.I dir
+fails.  With the second form,
+.B pushd
+returns 0 unless the directory stack is empty,
+a non-existent directory stack element is specified,
+or the directory change to the specified new current directory
+fails.
+.RE
+.TP
+\fBpwd\fP [\fB\-LP\fP]
+Print the absolute pathname of the current working directory.
+The pathname printed contains no symbolic links if the
+.B \-P
+option is supplied or the 
+.B \-o physical
+option to the
+.B set
+builtin command is enabled.
+If the
+.B \-L
+option is used, the pathname printed may contain symbolic links.
+The return status is 0 unless an error occurs while
+reading the name of the current directory or an
+invalid option is supplied.
+.TP
+\fBread\fP [\fB\-ers\fP] [\fB\-a\fP \fIaname\fP] [\fB\-d\fP \fIdelim\fP] [\fB\-i\fP \fItext\fP] [\fB\-n\fP \fInchars\fP] [\fB\-N\fP \fInchars\fP] [\fB\-p\fP \fIprompt\fP] [\fB\-t\fP \fItimeout\fP] [\fB\-u\fP \fIfd\fP] [\fIname\fP ...]
+One line is read from the standard input, or from the file descriptor
+\fIfd\fP supplied as an argument to the \fB\-u\fP option, and the first word
+is assigned to the first
+.IR name ,
+the second word to the second
+.IR name ,
+and so on, with leftover words and their intervening separators assigned
+to the last
+.IR name .
+If there are fewer words read from the input stream than names,
+the remaining names are assigned empty values.
+The characters in 
+.SM
+.B IFS
+are used to split the line into words.
+The backslash character (\fB\e\fP) may be used to remove any special
+meaning for the next character read and for line continuation.
+Options, if supplied, have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-a \fIaname\fP
+The words are assigned to sequential indices
+of the array variable
+.IR aname ,
+starting at 0.
+.I aname
+is unset before any new values are assigned.
+Other \fIname\fP arguments are ignored.
+.TP
+.B \-d \fIdelim\fP
+The first character of \fIdelim\fP is used to terminate the input line,
+rather than newline.
+.TP
+.B \-e
+If the standard input
+is coming from a terminal,
+.B readline
+(see
+.SM
+.B READLINE
+above) is used to obtain the line.
+Readline uses the current (or default, if line editing was not previously
+active) editing settings.
+.TP
+.B \-i \fItext\fP
+If
+.B readline
+is being used to read the line, \fItext\fP is placed into the editing
+buffer before editing begins.
+.TP
+.B \-n \fInchars\fP
+\fBread\fP returns after reading \fInchars\fP characters rather than
+waiting for a complete line of input, but honor a delimiter if fewer
+than \fInchars\fP characters are read before the delimiter.
+.TP
+.B \-N \fInchars\fP
+\fBread\fP returns after reading exactly \fInchars\fP characters rather
+than waiting for a complete line of input, unless EOF is encountered or
+\fBread\fP times out.
+Delimiter characters encountered in the input are
+not treated specially and do not cause \fBread\fP to return until
+\fInchars\fP characters are read.
+.TP
+.B \-p \fIprompt\fP
+Display \fIprompt\fP on standard error, without a
+trailing newline, before attempting to read any input.  The prompt
+is displayed only if input is coming from a terminal.
+.TP
+.B \-r
+Backslash does not act as an escape character.
+The backslash is considered to be part of the line.
+In particular, a backslash-newline pair may not be used as a line
+continuation.
+.TP
+.B \-s
+Silent mode.  If input is coming from a terminal, characters are
+not echoed.
+.TP
+.B \-t \fItimeout\fP
+Cause \fBread\fP to time out and return failure if a complete line of
+input (or a specified number of characters)
+is not read within \fItimeout\fP seconds.
+\fItimeout\fP may be a decimal number with a fractional portion following
+the decimal point.
+This option is only effective if \fBread\fP is reading input from a
+terminal, pipe, or other special file; it has no effect when reading
+from regular files.
+If \fBread\fP times out, \fBread\fP saves any partial input read into
+the specified variable \fIname\fP.
+If \fItimeout\fP is 0, \fBread\fP returns immediately, without trying to
+read any data.  The exit status is 0 if input is available on
+the specified file descriptor, non-zero otherwise.
+The exit status is greater than 128 if the timeout is exceeded.
+.TP
+.B \-u \fIfd\fP
+Read input from file descriptor \fIfd\fP.
+.PD
+.PP
+If no
+.I names
+are supplied, the line read is assigned to the variable
+.SM
+.BR REPLY .
+The return code is zero, unless end-of-file is encountered, \fBread\fP
+times out (in which case the return code is greater than 128),
+a variable assignment error (such as assigning to a readonly variable) occurs,
+or an invalid file descriptor is supplied as the argument to \fB\-u\fP.
+.RE
+.TP
+\fBreadonly\fP [\fB\-aAf\fP] [\fB\-p\fP] [\fIname\fP[=\fIword\fP] ...]
+.PD
+The given
+\fInames\fP are marked readonly; the values of these
+.I names
+may not be changed by subsequent assignment.
+If the
+.B \-f
+option is supplied, the functions corresponding to the
+\fInames\fP are so
+marked.
+The
+.B \-a
+option restricts the variables to indexed arrays; the
+.B \-A
+option restricts the variables to associative arrays.
+If both options are supplied,
+.B \-A
+takes precedence.
+If no
+.I name
+arguments are given, or if the
+.B \-p
+option is supplied, a list of all readonly names is printed.
+The other options may be used to restrict the output to a subset of
+the set of readonly names.
+The
+.B \-p
+option causes output to be displayed in a format that
+may be reused as input.
+If a variable name is followed by =\fIword\fP, the value of
+the variable is set to \fIword\fP.
+The return status is 0 unless an invalid option is encountered,
+one of the
+.I names
+is not a valid shell variable name, or
+.B \-f
+is supplied with a
+.I name
+that is not a function.
+.TP
+\fBreturn\fP [\fIn\fP]
+Causes a function to stop executing and return the value specified by
+.I n
+to its caller.
+If 
+.I n
+is omitted, the return status is that of the last command
+executed in the function body.  If
+.B return
+is used outside a function,
+but during execution of a script by the 
+.B .
+(\fBsource\fP) command, it causes the shell to stop executing
+that script and return either
+.I n
+or the exit status of the last command executed within the
+script as the exit status of the script.
+If \fIn\fP is supplied, the return value is its least significant
+8 bits.
+The return status is non-zero if
+.B return
+is supplied a non-numeric argument, or
+is used outside a
+function and not during execution of a script by \fB.\fP\^ or \fBsource\fP.
+Any command associated with the \fBRETURN\fP trap is executed
+before execution resumes after the function or script.
+.TP
+\fBset\fP [\fB\-\-abefhkmnptuvxBCEHPT\fP] [\fB\-o\fP \fIoption\-name\fP] [\fIarg\fP ...]
+.PD 0
+.TP
+\fBset\fP [\fB+abefhkmnptuvxBCEHPT\fP] [\fB+o\fP \fIoption\-name\fP] [\fIarg\fP ...]
+.PD
+Without options, the name and value of each shell variable are displayed
+in a format that can be reused as input
+for setting or resetting the currently-set variables.
+Read-only variables cannot be reset.
+In \fIposix\fP mode, only shell variables are listed.
+The output is sorted according to the current locale.
+When options are specified, they set or unset shell attributes.
+Any arguments remaining after option processing are treated
+as values for the positional parameters and are assigned, in order, to 
+.BR $1 ,
+.BR $2 ,
+.B ...
+.BR $\fIn\fP .
+Options, if specified, have the following meanings:
+.RS
+.PD 0
+.TP 8
+.B \-a
+Automatically mark variables and functions which are modified or
+created for export to the environment of subsequent commands.
+.TP 8
+.B \-b
+Report the status of terminated background jobs
+immediately, rather than before the next primary prompt.  This is
+effective only when job control is enabled.
+.TP 8
+.B \-e
+Exit immediately if a
+\fIpipeline\fP (which may consist of a single \fIsimple command\fP),
+a \fIlist\fP,
+or a \fIcompound command\fP
+(see
+.SM
+.B SHELL GRAMMAR
+above),  exits with a non-zero status.
+The shell does not exit if the
+command that fails is part of the command list immediately following a
+.B while
+or
+.B until
+keyword, 
+part of the test following the
+.B if
+or
+.B elif
+reserved words, part of any command executed in a
+.B &&
+or
+.B ||
+list except the command following the final \fB&&\fP or \fB||\fP,
+any command in a pipeline but the last,
+or if the command's return value is
+being inverted with
+.BR ! .
+If a compound command other than a subshell
+returns a non-zero status because a command failed
+while \fB\-e\fP was being ignored, the shell does not exit.
+A trap on \fBERR\fP, if set, is executed before the shell exits.
+This option applies to the shell environment and each subshell environment
+separately (see
+.SM
+.B "COMMAND EXECUTION ENVIRONMENT"
+above), and may cause
+subshells to exit before executing all the commands in the subshell.
+.if t .sp 0.5
+.if n .sp 1
+If a compound command or shell function executes in a context
+where \fB\-e\fP is being ignored,
+none of the commands executed within the compound command or function body
+will be affected by the \fB\-e\fP setting, even if \fB\-e\fP is set
+and a command returns a failure status.
+If a compound command or shell function sets \fB\-e\fP while executing in
+a context where \fB\-e\fP is ignored, that setting will not have any
+effect until the compound command or the command containing the function
+call completes.
+.TP 8
+.B \-f
+Disable pathname expansion.
+.TP 8 
+.B \-h
+Remember the location of commands as they are looked up for execution.
+This is enabled by default.
+.TP 8
+.B \-k
+All arguments in the form of assignment statements
+are placed in the environment for a command, not just
+those that precede the command name.
+.TP 8
+.B \-m
+Monitor mode.  Job control is enabled.  This option is on
+by default for interactive shells on systems that support
+it (see
+.SM
+.B JOB CONTROL
+above).
+All processes run in a separate process group.
+When a background job completes, the shell prints a line
+containing its exit status.
+.TP 8
+.B \-n
+Read commands but do not execute them.  This may be used to 
+check a shell script for syntax errors.  This is ignored by
+interactive shells.
+.TP 8
+.B \-o \fIoption\-name\fP
+The \fIoption\-name\fP can be one of the following:
+.RS
+.TP 8
+.B allexport
+Same as
+.BR \-a .
+.TP 8
+.B braceexpand
+Same as
+.BR \-B .
+.TP 8
+.B emacs
+Use an emacs-style command line editing interface.  This is enabled
+by default when the shell is interactive, unless the shell is started
+with the
+.B \-\-noediting
+option.
+This also affects the editing interface used for \fBread \-e\fP.
+.TP 8
+.B errexit
+Same as
+.BR \-e .
+.TP 8
+.B errtrace
+Same as
+.BR \-E .
+.TP 8
+.B functrace
+Same as
+.BR \-T .
+.TP 8
+.B hashall
+Same as
+.BR \-h .
+.TP 8
+.B histexpand
+Same as
+.BR \-H .
+.TP 8
+.B history
+Enable command history, as described above under
+.SM
+.BR HISTORY .
+This option is on by default in interactive shells.
+.TP 8
+.B ignoreeof
+The effect is as if the shell command
+.if t \f(CWIGNOREEOF=10\fP
+.if n ``IGNOREEOF=10''
+had been executed
+(see
+.B Shell Variables
+above).
+.TP 8
+.B keyword
+Same as
+.BR \-k .
+.TP 8
+.B monitor
+Same as
+.BR \-m .
+.TP 8
+.B noclobber
+Same as
+.BR \-C .
+.TP 8
+.B noexec
+Same as
+.BR \-n .
+.TP 8
+.B noglob
+Same as
+.BR \-f .
+.TP 8
+.B nolog
+Currently ignored.
+.TP 8
+.B notify
+Same as
+.BR \-b .
+.TP 8
+.B nounset
+Same as
+.BR \-u .
+.TP 8
+.B onecmd
+Same as
+.BR \-t .
+.TP 8
+.B physical
+Same as
+.BR \-P .
+.TP 8
+.B pipefail
+If set, the return value of a pipeline is the value of the last
+(rightmost) command to exit with a non-zero status, or zero if all
+commands in the pipeline exit successfully.
+This option is disabled by default.
+.TP 8
+.B posix
+Change the behavior of
+.B bash
+where the default operation differs
+from the POSIX standard to match the standard (\fIposix mode\fP).
+See
+.SM
+.B "SEE ALSO"
+below for a reference to a document that details how posix mode affects
+bash's behavior.
+.TP 8
+.B privileged
+Same as
+.BR \-p .
+.TP 8
+.B verbose
+Same as
+.BR \-v .
+.TP 8
+.B vi
+Use a vi-style command line editing interface.
+This also affects the editing interface used for \fBread \-e\fP.
+.TP 8
+.B xtrace
+Same as
+.BR \-x .
+.sp .5
+.PP
+If
+.B \-o
+is supplied with no \fIoption\-name\fP, the values of the current options are
+printed.
+If
+.B +o
+is supplied with no \fIoption\-name\fP, a series of
+.B set
+commands to recreate the current option settings is displayed on
+the standard output.
+.RE
+.TP 8
+.B \-p
+Turn on
+.I privileged
+mode.  In this mode, the
+.SM
+.B $ENV
+and
+.SM
+.B $BASH_ENV
+files are not processed, shell functions are not inherited from the
+environment, and the
+.SM
+.BR SHELLOPTS ,
+.SM
+.BR BASHOPTS ,
+.SM
+.BR CDPATH ,
+and
+.SM
+.B GLOBIGNORE
+variables, if they appear in the environment, are ignored.
+If the shell is started with the effective user (group) id not equal to the
+real user (group) id, and the \fB\-p\fP option is not supplied, these actions
+are taken and the effective user id is set to the real user id.
+If the \fB\-p\fP option is supplied at startup, the effective user id is
+not reset.
+Turning this option off causes the effective user
+and group ids to be set to the real user and group ids.
+.TP 8
+.B \-t
+Exit after reading and executing one command.
+.TP 8
+.B \-u
+Treat unset variables and parameters other than the special
+parameters "@" and "*" as an error when performing
+parameter expansion.  If expansion is attempted on an
+unset variable or parameter, the shell prints an error message, and,
+if not interactive, exits with a non-zero status.
+.TP 8
+.B \-v
+Print shell input lines as they are read.
+.TP 8
+.B \-x
+After expanding each \fIsimple command\fP,
+\fBfor\fP command, \fBcase\fP command, \fBselect\fP command, or
+arithmetic \fBfor\fP command, display the expanded value of
+.SM
+.BR PS4 ,
+followed by the command and its expanded arguments
+or associated word list.
+.TP 8
+.B \-B
+The shell performs brace expansion (see
+.B Brace Expansion
+above).  This is on by default.
+.TP 8
+.B \-C
+If set,
+.B bash
+does not overwrite an existing file with the
+.BR > ,
+.BR >& ,
+and
+.B <>
+redirection operators.  This may be overridden when 
+creating output files by using the redirection operator
+.B >|
+instead of
+.BR > .
+.TP 8
+.B \-E
+If set, any trap on \fBERR\fP is inherited by shell functions, command
+substitutions, and commands executed in a subshell environment.
+The \fBERR\fP trap is normally not inherited in such cases.
+.TP 8
+.B \-H
+Enable
+.B !
+style history substitution.  This option is on by
+default when the shell is interactive.
+.TP 8
+.B \-P
+If set, the shell does not resolve symbolic links when executing
+commands such as
+.B cd
+that change the current working directory.  It uses the
+physical directory structure instead.  By default,
+.B bash
+follows the logical chain of directories when performing commands
+which change the current directory.
+.TP 8
+.B \-T
+If set, any traps on \fBDEBUG\fP and \fBRETURN\fP are inherited by shell
+functions, command substitutions, and commands executed in a
+subshell environment.
+The \fBDEBUG\fP and \fBRETURN\fP traps are normally not inherited
+in such cases.
+.TP 8
+.B \-\-
+If no arguments follow this option, then the positional parameters are
+unset.  Otherwise, the positional parameters are set to the
+\fIarg\fPs, even if some of them begin with a
+.BR \- .
+.TP 8
+.B \-
+Signal the end of options, cause all remaining \fIarg\fPs to be
+assigned to the positional parameters.  The
+.B \-x
+and
+.B \-v
+options are turned off.
+If there are no \fIarg\fPs,
+the positional parameters remain unchanged.
+.PD
+.PP
+The options are off by default unless otherwise noted.
+Using + rather than \- causes these options to be turned off.
+The options can also be specified as arguments to an invocation of
+the shell.
+The current set of options may be found in
+.BR $\- .
+The return status is always true unless an invalid option is encountered.
+.RE
+.TP
+\fBshift\fP [\fIn\fP]
+The positional parameters from \fIn\fP+1 ... are renamed to
+.B $1
+.B ....
+Parameters represented by the numbers \fB$#\fP
+down to \fB$#\fP\-\fIn\fP+1 are unset.
+.I n
+must be a non-negative number less than or equal to \fB$#\fP.
+If
+.I n
+is 0, no parameters are changed.
+If
+.I n 
+is not given, it is assumed to be 1.
+If
+.I n
+is greater than \fB$#\fP, the positional parameters are not changed.
+The return status is greater than zero if
+.I n
+is greater than
+.B $#
+or less than zero; otherwise 0.
+.TP
+\fBshopt\fP [\fB\-pqsu\fP] [\fB\-o\fP] [\fIoptname\fP ...]
+Toggle the values of variables controlling optional shell behavior.
+With no options, or with the
+.B \-p
+option, a list of all settable options is displayed, with
+an indication of whether or not each is set.
+The \fB\-p\fP option causes output to be displayed in a form that
+may be reused as input.
+Other options have the following meanings:
+.RS
+.PD 0
+.TP
+.B \-s
+Enable (set) each \fIoptname\fP.
+.TP
+.B \-u
+Disable (unset) each \fIoptname\fP.
+.TP
+.B \-q
+Suppresses normal output (quiet mode); the return status indicates
+whether the \fIoptname\fP is set or unset.
+If multiple \fIoptname\fP arguments are given with
+.BR \-q ,
+the return status is zero if all \fIoptnames\fP are enabled; non-zero
+otherwise.
+.TP
+.B \-o
+Restricts the values of \fIoptname\fP to be those defined for the
+.B \-o
+option to the
+.B set
+builtin.
+.PD
+.PP
+If either
+.B \-s
+or
+.B \-u
+is used with no \fIoptname\fP arguments,
+.B shopt
+shows only those options which are set or unset, respectively.
+Unless otherwise noted, the \fBshopt\fP options are disabled (unset)
+by default.
+.PP
+The return status when listing options is zero if all \fIoptnames\fP
+are enabled, non-zero otherwise.  When setting or unsetting options,
+the return status is zero unless an \fIoptname\fP is not a valid shell
+option.
+.PP
+The list of \fBshopt\fP options is:
+.if t .sp .5v
+.if n .sp 1v
+.PD 0
+.TP 8
+.B autocd
+If set, a command name that is the name of a directory is executed as if
+it were the argument to the \fBcd\fP command.
+This option is only used by interactive shells.
+.TP 8
+.B cdable_vars
+If set, an argument to the
+.B cd
+builtin command that
+is not a directory is assumed to be the name of a variable whose
+value is the directory to change to.
+.TP 8
+.B cdspell
+If set, minor errors in the spelling of a directory component in a
+.B cd
+command will be corrected.
+The errors checked for are transposed characters,
+a missing character, and one character too many.
+If a correction is found, the corrected filename is printed,
+and the command proceeds.
+This option is only used by interactive shells.
+.TP 8
+.B checkhash
+If set, \fBbash\fP checks that a command found in the hash
+table exists before trying to execute it.  If a hashed command no
+longer exists, a normal path search is performed.
+.TP 8
+.B checkjobs
+If set, \fBbash\fP lists the status of any stopped and running jobs before
+exiting an interactive shell.  If any jobs are running, this causes
+the exit to be deferred until a second exit is attempted without an
+intervening command (see
+.SM
+.B "JOB CONTROL"
+above).  The shell always
+postpones exiting if any jobs are stopped.
+.TP 8
+.B checkwinsize
+If set, \fBbash\fP checks the window size after each command
+and, if necessary, updates the values of
+.SM
+.B LINES
+and
+.SM
+.BR COLUMNS .
+.TP 8
+.B cmdhist
+If set,
+.B bash
+attempts to save all lines of a multiple-line
+command in the same history entry.  This allows
+easy re-editing of multi-line commands.
+.TP 8
+.B compat31
+If set,
+.B bash
+changes its behavior to that of version 3.1 with respect to quoted
+arguments to the \fB[[\fP conditional command's \fB=~\fP operator
+and locale-specific string comparison when using the \fB[[\fP
+conditional command's \fB<\fP and \fB>\fP operators.
+Bash versions prior to bash-4.1 use ASCII collation and
+.IR strcmp (3);
+bash-4.1 and later use the current locale's collation sequence and
+.IR strcoll (3).
+.TP 8
+.B compat32
+If set,
+.B bash
+changes its behavior to that of version 3.2 with respect to
+locale-specific string comparison when using the \fB[[\fP
+conditional command's \fB<\fP and \fB>\fP operators (see previous item).
+.TP 8
+.B compat40
+If set,
+.B bash
+changes its behavior to that of version 4.0 with respect to locale-specific
+string comparison when using the \fB[[\fP
+conditional command's \fB<\fP and \fB>\fP operators (see description of
+\fBcompat31\fP)
+and the effect of interrupting a command list.
+Bash versions 4.0 and later interrupt the list as if the shell received the
+interrupt; previous versions continue with the next command in the list.
+.TP 8
+.B compat41
+If set,
+.BR bash ,
+when in \fIposix\fP mode, treats a single quote in a double-quoted
+parameter expansion as a special character.  The single quotes must match
+(an even number) and the characters between the single quotes are considered
+quoted.  This is the behavior of posix mode through version 4.1.
+The default bash behavior remains as in previous versions.
+.TP 8
+.B compat42
+If set,
+.B bash
+does not process the replacement string in the pattern substitution word
+expansion using quote removal.
+.TP 8
+.B complete_fullquote
+If set,
+.B bash
+quotes all shell metacharacters in filenames and directory names when
+performing completion.
+If not set,
+.B bash
+removes metacharacters such as the dollar sign from the set of
+characters that will be quoted in completed filenames
+when these metacharacters appear in shell variable references in words to be
+completed.
+This means that dollar signs in variable names that expand to directories
+will not be quoted;
+however, any dollar signs appearing in filenames will not be quoted, either.
+This is active only when bash is using backslashes to quote completed
+filenames.
+This variable is set by default, which is the default bash behavior in
+versions through 4.2.
+.TP 8
+.B direxpand
+If set,
+.B bash
+replaces directory names with the results of word expansion when performing
+filename completion.  This changes the contents of the readline editing
+buffer.
+If not set,
+.B bash
+attempts to preserve what the user typed.
+.TP 8
+.B dirspell
+If set,
+.B bash
+attempts spelling correction on directory names during word completion
+if the directory name initially supplied does not exist.
+.TP 8
+.B dotglob
+If set, 
+.B bash
+includes filenames beginning with a `.' in the results of pathname
+expansion.
+.TP 8
+.B execfail
+If set, a non-interactive shell will not exit if
+it cannot execute the file specified as an argument to the
+.B exec
+builtin command.  An interactive shell does not exit if
+.B exec
+fails.
+.TP 8
+.B expand_aliases
+If set, aliases are expanded as described above under
+.SM
+.BR ALIASES .
+This option is enabled by default for interactive shells.
+.TP 8
+.B extdebug
+If set, behavior intended for use by debuggers is enabled:
+.RS
+.TP
+.B 1.
+The \fB\-F\fP option to the \fBdeclare\fP builtin displays the source
+file name and line number corresponding to each function name supplied
+as an argument.
+.TP
+.B 2.
+If the command run by the \fBDEBUG\fP trap returns a non-zero value, the
+next command is skipped and not executed.
+.TP
+.B 3.
+If the command run by the \fBDEBUG\fP trap returns a value of 2, and the
+shell is executing in a subroutine (a shell function or a shell script
+executed by the \fB.\fP or \fBsource\fP builtins), a call to
+\fBreturn\fP is simulated.
+.TP
+.B 4.
+.SM
+.B BASH_ARGC
+and
+.SM
+.B BASH_ARGV
+are updated as described in their descriptions above.
+.TP
+.B 5.
+Function tracing is enabled:  command substitution, shell functions, and
+subshells invoked with \fB(\fP \fIcommand\fP \fB)\fP inherit the
+\fBDEBUG\fP and \fBRETURN\fP traps.
+.TP
+.B 6.
+Error tracing is enabled:  command substitution, shell functions, and
+subshells invoked with \fB(\fP \fIcommand\fP \fB)\fP inherit the
+\fBERR\fP trap.
+.RE
+.TP 8
+.B extglob
+If set, the extended pattern matching features described above under
+\fBPathname Expansion\fP are enabled.
+.TP 8
+.B extquote
+If set, \fB$\fP\(aq\fIstring\fP\(aq and \fB$\fP"\fIstring\fP" quoting is
+performed within \fB${\fP\fIparameter\fP\fB}\fP expansions
+enclosed in double quotes.  This option is enabled by default.
+.TP 8
+.B failglob
+If set, patterns which fail to match filenames during pathname expansion
+result in an expansion error.
+.TP 8
+.B force_fignore
+If set, the suffixes specified by the
+.SM
+.B FIGNORE
+shell variable
+cause words to be ignored when performing word completion even if
+the ignored words are the only possible completions.
+See
+.SM
+\fBSHELL VARIABLES\fP
+above for a description of
+.SM
+.BR FIGNORE .
+This option is enabled by default.
+.TP 8
+.B globasciiranges
+If set, range expressions used in pattern matching (see
+.SM
+.B Pattern Matching
+above) behave as if in the traditional C locale when performing
+comparisons.  That is, the current locale's collating sequence
+is not taken into account, so
+.B b
+will not collate between
+.B A
+and
+.BR B ,
+and upper-case and lower-case ASCII characters will collate together.
+.TP 8
+.B globstar
+If set, the pattern \fB**\fP used in a pathname expansion context will
+match all files and zero or more directories and subdirectories.
+If the pattern is followed by a \fB/\fP, only directories and
+subdirectories match.
+.TP 8
+.B gnu_errfmt
+If set, shell error messages are written in the standard GNU error
+message format.
+.TP 8
+.B histappend
+If set, the history list is appended to the file named by the value
+of the
+.SM
+.B HISTFILE
+variable when the shell exits, rather than overwriting the file.
+.TP 8
+.B histreedit
+If set, and
+.B readline
+is being used, a user is given the opportunity to re-edit a
+failed history substitution.
+.TP 8
+.B histverify
+If set, and 
+.B readline
+is being used, the results of history substitution are not immediately
+passed to the shell parser.  Instead, the resulting line is loaded into
+the \fBreadline\fP editing buffer, allowing further modification.
+.TP 8
+.B hostcomplete
+If set, and
+.B readline
+is being used, \fBbash\fP will attempt to perform hostname completion when a
+word containing a \fB@\fP is being completed (see
+.B Completing
+under
+.SM
+.B READLINE
+above).
+This is enabled by default.
+.TP 8
+.B huponexit
+If set, \fBbash\fP will send
+.SM
+.B SIGHUP
+to all jobs when an interactive login shell exits.
+.TP 8
+.B interactive_comments
+If set, allow a word beginning with
+.B #
+to cause that word and all remaining characters on that
+line to be ignored in an interactive shell (see
+.SM
+.B COMMENTS
+above).  This option is enabled by default.
+.TP 8
+.B lastpipe
+If set, and job control is not active, the shell runs the last command of
+a pipeline not executed in the background in the current shell environment.
+.TP 8
+.B lithist
+If set, and the
+.B cmdhist
+option is enabled, multi-line commands are saved to the history with
+embedded newlines rather than using semicolon separators where possible.
+.TP 8
+.B login_shell
+The shell sets this option if it is started as a login shell (see
+.SM
+.B "INVOCATION"
+above).
+The value may not be changed.
+.TP 8
+.B mailwarn
+If set, and a file that \fBbash\fP is checking for mail has been  
+accessed since the last time it was checked, the message ``The mail in
+\fImailfile\fP has been read'' is displayed.
+.TP 8
+.B no_empty_cmd_completion
+If set, and
+.B readline
+is being used,
+.B bash
+will not attempt to search the
+.SM
+.B PATH
+for possible completions when
+completion is attempted on an empty line.
+.TP 8
+.B nocaseglob
+If set,
+.B bash
+matches filenames in a case\-insensitive fashion when performing pathname
+expansion (see
+.B Pathname Expansion
+above).
+.TP 8
+.B nocasematch
+If set,
+.B bash
+matches patterns in a case\-insensitive fashion when performing matching
+while executing \fBcase\fP or \fB[[\fP conditional commands.
+.TP 8
+.B nullglob
+If set,
+.B bash
+allows patterns which match no
+files (see
+.B Pathname Expansion
+above)
+to expand to a null string, rather than themselves.
+.TP 8
+.B progcomp
+If set, the programmable completion facilities (see
+\fBProgrammable Completion\fP above) are enabled.
+This option is enabled by default.
+.TP 8
+.B promptvars
+If set, prompt strings undergo
+parameter expansion, command substitution, arithmetic
+expansion, and quote removal after being expanded as described in
+.SM
+.B PROMPTING
+above.  This option is enabled by default.
+.TP 8
+.B restricted_shell
+The shell sets this option if it is started in restricted mode (see
+.SM
+.B "RESTRICTED SHELL"
+below).
+The value may not be changed.
+This is not reset when the startup files are executed, allowing
+the startup files to discover whether or not a shell is restricted.
+.TP 8
+.B shift_verbose
+If set, the
+.B shift
+builtin prints an error message when the shift count exceeds the
+number of positional parameters.
+.TP 8
+.B sourcepath
+If set, the
+\fBsource\fP (\fB.\fP) builtin uses the value of
+.SM
+.B PATH
+to find the directory containing the file supplied as an argument.
+This option is enabled by default.
+.TP 8
+.B xpg_echo
+If set, the \fBecho\fP builtin expands backslash-escape sequences
+by default.
+.RE
+.PD
+.TP
+\fBsuspend\fP [\fB\-f\fP]
+Suspend the execution of this shell until it receives a
+.SM
+.B SIGCONT
+signal.  A login shell cannot be suspended; the
+.B \-f
+option can be used to override this and force the suspension.
+The return status is 0 unless the shell is a login shell and
+.B \-f
+is not supplied, or if job control is not enabled.
+.TP
+\fBtest\fP \fIexpr\fP
+.PD 0
+.TP
+\fB[\fP \fIexpr\fP \fB]\fP
+Return a status of 0 (true) or 1 (false) depending on
+the evaluation of the conditional expression
+.IR expr .
+Each operator and operand must be a separate argument.
+Expressions are composed of the primaries described above under
+.SM
+.BR "CONDITIONAL EXPRESSIONS" .
+\fBtest\fP does not accept any options, nor does it accept and ignore
+an argument of \fB\-\-\fP as signifying the end of options.
+.if t .sp 0.5
+.if n .sp 1
+Expressions may be combined using the following operators, listed
+in decreasing order of precedence.
+The evaluation depends on the number of arguments; see below.
+Operator precedence is used when there are five or more arguments.
+.RS
+.PD 0
+.TP
+.B ! \fIexpr\fP
+True if
+.I expr
+is false.
+.TP
+.B ( \fIexpr\fP )
+Returns the value of \fIexpr\fP.
+This may be used to override the normal precedence of operators.
+.TP
+\fIexpr1\fP \-\fBa\fP \fIexpr2\fP
+True if both
+.I expr1
+and
+.I expr2
+are true.
+.TP
+\fIexpr1\fP \-\fBo\fP \fIexpr2\fP
+True if either
+.I expr1
+or
+.I expr2
+is true.
+.PD
+.PP
+\fBtest\fP and \fB[\fP evaluate conditional
+expressions using a set of rules based on the number of arguments.
+.if t .sp 0.5
+.if n .sp 1
+.PD 0
+.TP
+0 arguments
+The expression is false.
+.TP
+1 argument
+The expression is true if and only if the argument is not null.
+.TP
+2 arguments
+If the first argument is \fB!\fP, the expression is true if and
+only if the second argument is null.
+If the first argument is one of the unary conditional operators listed above
+under
+.SM
+.BR "CONDITIONAL EXPRESSIONS" ,
+the expression is true if the unary test is true.
+If the first argument is not a valid unary conditional operator, the expression
+is false.
+.TP
+3 arguments
+The following conditions are applied in the order listed.
+If the second argument is one of the binary conditional operators listed above
+under
+.SM
+.BR "CONDITIONAL EXPRESSIONS" ,
+the result of the expression is the result of the binary test using
+the first and third arguments as operands.
+The \fB\-a\fP and \fB\-o\fP operators are considered binary operators
+when there are three arguments.  
+If the first argument is \fB!\fP, the value is the negation of
+the two-argument test using the second and third arguments.
+If the first argument is exactly \fB(\fP and the third argument is
+exactly \fB)\fP, the result is the one-argument test of the second
+argument.
+Otherwise, the expression is false.
+.TP
+4 arguments
+If the first argument is \fB!\fP, the result is the negation of
+the three-argument expression composed of the remaining arguments.
+Otherwise, the expression is parsed and evaluated according to 
+precedence using the rules listed above.
+.TP
+5 or more arguments
+The expression is parsed and evaluated according to precedence
+using the rules listed above.
+.if t .sp 0.5
+.if n .sp 1
+.LP
+When used with \fBtest\fP or \fB[\fP, the \fB<\fP and \fB>\fP operators
+sort lexicographically using ASCII ordering.
+.RE
+.PD
+.TP
+.B times
+Print the accumulated user and system times for the shell and
+for processes run from the shell.  The return status is 0.
+.TP
+\fBtrap\fP [\fB\-lp\fP] [[\fIarg\fP] \fIsigspec\fP ...]
+The command
+.I arg
+is to be read and executed when the shell receives
+signal(s)
+.IR sigspec .
+If
+.I arg
+is absent (and there is a single \fIsigspec\fP) or
+.BR \- ,
+each specified signal is
+reset to its original disposition (the value it had
+upon entrance to the shell).
+If 
+.I arg
+is the null string the signal specified by each
+.I sigspec
+is ignored by the shell and by the commands it invokes.
+If
+.I arg
+is not present and
+.B \-p
+has been supplied, then the trap commands associated with each
+.I sigspec
+are displayed.
+If no arguments are supplied or if only
+.B \-p
+is given,
+.B trap
+prints the list of commands associated with each signal.
+The
+.B \-l
+option causes the shell to print a list of signal names and
+their corresponding numbers.
+Each
+.I sigspec
+is either
+a signal name defined in <\fIsignal.h\fP>, or a signal number.
+Signal names are case insensitive and the
+.SM
+.B SIG
+prefix is optional.
+.if t .sp 0.5
+.if n .sp 1
+If a
+.I sigspec
+is
+.SM
+.B EXIT
+(0) the command
+.I arg
+is executed on exit from the shell.
+If a
+.I sigspec
+is
+.SM
+.BR DEBUG ,
+the command
+.I arg
+is executed before every \fIsimple command\fP, \fIfor\fP command,
+\fIcase\fP command, \fIselect\fP command, every arithmetic \fIfor\fP
+command, and before the first command executes in a shell function (see
+.SM
+.B SHELL GRAMMAR
+above).
+Refer to the description of the \fBextdebug\fP option to the
+\fBshopt\fP builtin for details of its effect on the \fBDEBUG\fP trap.
+If a
+.I sigspec
+is
+.SM
+.BR RETURN ,
+the command
+.I arg
+is executed each time a shell function or a script executed with
+the \fB.\fP or \fBsource\fP builtins finishes executing.
+.if t .sp 0.5
+.if n .sp 1
+If a
+.I sigspec
+is
+.SM
+.BR ERR ,
+the command
+.I arg
+is executed whenever a 
+a pipeline (which may consist of a single simple
+command), a list, or a compound command returns a 
+non\-zero exit status,
+subject to the following conditions.
+The
+.SM
+.B ERR
+trap is not executed if the failed
+command is part of the command list immediately following a
+.B while
+or
+.B until
+keyword, 
+part of the test in an
+.I if
+statement, part of a command executed in a
+.B &&
+or
+.B ||
+list except the command following the final \fB&&\fP or \fB||\fP,
+any command in a pipeline but the last,
+or if the command's return value is
+being inverted using
+.BR ! .
+These are the same conditions obeyed by the \fBerrexit\fP (\fB\-e\fP) option.
+.if t .sp 0.5
+.if n .sp 1
+Signals ignored upon entry to the shell cannot be trapped or reset.
+Trapped signals that are not being ignored are reset to their original
+values in a subshell or subshell environment when one is created.
+The return status is false if any
+.I sigspec
+is invalid; otherwise
+.B trap
+returns true.
+.TP
+\fBtype\fP [\fB\-aftpP\fP] \fIname\fP [\fIname\fP ...]
+With no options, 
+indicate how each
+.I name
+would be interpreted if used as a command name.
+If the
+.B \-t
+option is used,
+.B type
+prints a string which is one of
+.IR alias ,
+.IR keyword ,
+.IR function ,
+.IR builtin ,
+or
+.I file 
+if
+.I name
+is an alias, shell reserved word, function, builtin, or disk file,
+respectively.
+If the
+.I name
+is not found, then nothing is printed, and an exit status of false
+is returned.
+If the
+.B \-p
+option is used,
+.B type
+either returns the name of the disk file
+that would be executed if
+.I name
+were specified as a command name,
+or nothing if
+.if t \f(CWtype -t name\fP
+.if n ``type -t name''
+would not return
+.IR file .
+The
+.B \-P
+option forces a
+.SM
+.B PATH
+search for each \fIname\fP, even if
+.if t \f(CWtype -t name\fP
+.if n ``type -t name''
+would not return
+.IR file .
+If a command is hashed,
+.B \-p
+and
+.B \-P
+print the hashed value, which is not necessarily the file that appears
+first in 
+.SM
+.BR PATH .
+If the
+.B \-a
+option is used, 
+.B type
+prints all of the places that contain
+an executable named 
+.IR name .
+This includes aliases and functions,
+if and only if the 
+.B \-p
+option is not also used.
+The table of hashed commands is not consulted
+when using
+.BR \-a .
+The
+.B \-f
+option suppresses shell function lookup, as with the \fBcommand\fP builtin.
+.B type
+returns true if all of the arguments are found, false if
+any are not found.
+.TP
+\fBulimit\fP [\fB\-HSTabcdefilmnpqrstuvx\fP [\fIlimit\fP]]
+Provides control over the resources available to the shell and to
+processes started by it, on systems that allow such control.
+The \fB\-H\fP and \fB\-S\fP options specify that the hard or soft limit is
+set for the given resource.
+A hard limit cannot be increased by a non-root user once it is set;
+a soft limit may be increased up to the value of the hard limit.
+If neither \fB\-H\fP nor \fB\-S\fP is specified, both the soft and hard
+limits are set.
+The value of
+.I limit
+can be a number in the unit specified for the resource
+or one of the special values
+.BR hard ,
+.BR soft ,
+or
+.BR unlimited ,
+which stand for the current hard limit, the current soft limit, and
+no limit, respectively.
+If
+.I limit
+is omitted, the current value of the soft limit of the resource is
+printed, unless the \fB\-H\fP option is given.  When more than one
+resource is specified, the limit name and unit are printed before the value.
+Other options are interpreted as follows:
+.RS
+.PD 0
+.TP
+.B \-a
+All current limits are reported
+.TP
+.B \-b
+The maximum socket buffer size
+.TP
+.B \-c
+The maximum size of core files created
+.TP
+.B \-d
+The maximum size of a process's data segment
+.TP
+.B \-e
+The maximum scheduling priority ("nice")
+.TP
+.B \-f
+The maximum size of files written by the shell and its children
+.TP
+.B \-i
+The maximum number of pending signals
+.TP
+.B \-l
+The maximum size that may be locked into memory
+.TP
+.B \-m
+The maximum resident set size (many systems do not honor this limit)
+.TP
+.B \-n
+The maximum number of open file descriptors (most systems do not
+allow this value to be set)
+.TP
+.B \-p
+The pipe size in 512-byte blocks (this may not be set)
+.TP
+.B \-q
+The maximum number of bytes in POSIX message queues
+.TP
+.B \-r
+The maximum real-time scheduling priority
+.TP
+.B \-s
+The maximum stack size
+.TP
+.B \-t
+The maximum amount of cpu time in seconds
+.TP
+.B \-u
+The maximum number of processes available to a single user
+.TP
+.B \-v
+The maximum amount of virtual memory available to the shell and, on
+some systems, to its children
+.TP
+.B \-x
+The maximum number of file locks
+.TP
+.B \-T
+The maximum number of threads
+.PD
+.PP
+If
+.I limit
+is given, and the
+.B \-a
+option is not used,
+\fIlimit\fP is the new value of the specified resource.
+If no option is given, then
+.B \-f
+is assumed.  Values are in 1024-byte increments, except for
+.BR \-t ,
+which is in seconds;
+.BR \-p ,
+which is in units of 512-byte blocks;
+and
+.BR \-T ,
+.BR \-b ,
+.BR \-n ,
+and
+.BR \-u ,
+which are unscaled values.
+The return status is 0 unless an invalid option or argument is supplied,
+or an error occurs while setting a new limit.
+.RE
+.TP
+\fBumask\fP [\fB\-p\fP] [\fB\-S\fP] [\fImode\fP]
+The user file-creation mask is set to 
+.IR mode .
+If
+.I mode
+begins with a digit, it
+is interpreted as an octal number; otherwise
+it is interpreted as a symbolic mode mask similar
+to that accepted by
+.IR chmod (1).
+If
+.I mode
+is omitted, the current value of the mask is printed.
+The
+.B \-S
+option causes the mask to be printed in symbolic form; the
+default output is an octal number.
+If the
+.B \-p
+option is supplied, and
+.I mode
+is omitted, the output is in a form that may be reused as input.
+The return status is 0 if the mode was successfully changed or if
+no \fImode\fP argument was supplied, and false otherwise.
+.TP
+\fBunalias\fP [\-\fBa\fP] [\fIname\fP ...]
+Remove each \fIname\fP from the list of defined aliases.  If
+.B \-a
+is supplied, all alias definitions are removed.  The return
+value is true unless a supplied
+.I name
+is not a defined alias.
+.TP
+\fBunset\fP [\-\fBfv\fP] [\-\fBn\fP] [\fIname\fP ...]
+For each
+.IR name ,
+remove the corresponding variable or function.
+If the
+.B \-v
+option is given, each
+.I name
+refers to a shell variable, and that variable is removed.
+Read-only variables may not be unset.
+If
+.B \-f
+is specified, each
+.I name
+refers to a shell function, and the function definition
+is removed.
+If the
+.B \-n
+option is supplied, and \fIname\fP is a variable with the \fInameref\fP
+attribute, \fIname\fP will be unset rather than the variable it
+references.
+\fB\-n\fP has no effect if the \fB\-f\fP option is supplied.
+If no options are supplied, each \fIname\fP refers to a variable; if
+there is no variable by that name, any function with that name is
+unset.
+Each unset variable or function is removed from the environment
+passed to subsequent commands.
+If any of
+.SM
+.BR COMP_WORDBREAKS ,
+.SM
+.BR RANDOM ,
+.SM
+.BR SECONDS ,
+.SM
+.BR LINENO ,
+.SM
+.BR HISTCMD ,
+.SM
+.BR FUNCNAME ,
+.SM
+.BR GROUPS ,
+or
+.SM
+.B DIRSTACK
+are unset, they lose their special properties, even if they are
+subsequently reset.  The exit status is true unless a
+.I name
+is readonly.
+.TP
+\fBwait\fP [\fB\--n\fP] [\fIn ...\fP]
+Wait for each specified process and return its termination status.
+Each
+.I n
+may be a process
+ID or a job specification; if a job spec is given, all processes
+in that job's pipeline are waited for.  If
+.I n
+is not given, all currently active child processes
+are waited for, and the return status is zero.
+If the \fB\--n\fP option is supplied, \fBwait\fP waits for any job to
+terminate and returns its exit status.
+If
+.I n
+specifies a non-existent process or job, the return status is
+127.  Otherwise, the return status is the exit status of the last
+process or job waited for.
+.\" bash_builtins
+.if \n(zZ=1 .ig zZ
+.SH "RESTRICTED SHELL"
+.\" rbash.1
+.zY
+.PP
+If
+.B bash
+is started with the name
+.BR rbash ,
+or the
+.B \-r
+option is supplied at invocation,
+the shell becomes restricted.
+A restricted shell is used to
+set up an environment more controlled than the standard shell.
+It behaves identically to
+.B bash
+with the exception that the following are disallowed or not performed:
+.IP \(bu
+changing directories with \fBcd\fP
+.IP \(bu
+setting or unsetting the values of
+.SM
+.BR SHELL ,
+.SM
+.BR PATH ,
+.SM
+.BR ENV ,
+or
+.SM
+.B BASH_ENV
+.IP \(bu
+specifying command names containing
+.B /
+.IP \(bu
+specifying a filename containing a
+.B /
+as an argument to the
+.B .
+builtin command
+.IP \(bu
+specifying a filename containing a slash as an argument to the
+.B \-p
+option to the
+.B hash
+builtin command
+.IP \(bu
+importing function definitions from the shell environment at startup
+.IP \(bu
+parsing the value of
+.SM
+.B SHELLOPTS
+from the shell environment at startup
+.IP \(bu
+redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
+.IP \(bu
+using the
+.B exec
+builtin command to replace the shell with another command
+.IP \(bu
+adding or deleting builtin commands with the
+.B \-f
+and
+.B \-d
+options to the
+.B enable
+builtin command
+.IP \(bu
+using the \fBenable\fP builtin command to enable disabled shell builtins
+.IP \(bu
+specifying the
+.B \-p
+option to the
+.B command
+builtin command
+.IP \(bu
+turning off restricted mode with
+\fBset +r\fP or \fBset +o restricted\fP.
+.PP
+These restrictions are enforced after any startup files are read.
+.PP
+.ie \n(zY=1 When a command that is found to be a shell script is executed,
+.el \{ When a command that is found to be a shell script is executed
+(see
+.SM
+.B "COMMAND EXECUTION"
+above),
+\}
+.B rbash
+turns off any restrictions in the shell spawned to execute the
+script.
+.\" end of rbash.1
+.if \n(zY=1 .ig zY
+.SH "SEE ALSO"
+.PD 0
+.TP
+\fIBash Reference Manual\fP, Brian Fox and Chet Ramey
+.TP
+\fIThe Gnu Readline Library\fP, Brian Fox and Chet Ramey
+.TP
+\fIThe Gnu History Library\fP, Brian Fox and Chet Ramey
+.TP
+\fIPortable Operating System Interface (POSIX) Part 2: Shell and Utilities\fP, IEEE
+.TP
+http://tiswww.case.edu/~chet/bash/POSIX -- a description of posix mode
+.TP
+\fIsh\fP(1), \fIksh\fP(1), \fIcsh\fP(1)
+.TP
+\fIemacs\fP(1), \fIvi\fP(1)
+.TP
+\fIreadline\fP(3)
+.PD
+.SH FILES
+.PD 0
+.TP
+.FN /bin/bash
+The \fBbash\fP executable
+.TP
+.FN /etc/profile
+The systemwide initialization file, executed for login shells
+.TP
+.FN ~/.bash_profile
+The personal initialization file, executed for login shells
+.TP
+.FN ~/.bashrc
+The individual per-interactive-shell startup file
+.TP
+.FN ~/.bash_logout
+The individual login shell cleanup file, executed when a login shell exits
+.TP
+.FN ~/.inputrc
+Individual \fIreadline\fP initialization file
+.PD
+.SH AUTHORS
+Brian Fox, Free Software Foundation
+.br
+bfox@gnu.org
+.PP
+Chet Ramey, Case Western Reserve University
+.br
+chet.ramey@case.edu
+.SH BUG REPORTS
+If you find a bug in
+.B bash,
+you should report it.  But first, you should
+make sure that it really is a bug, and that it appears in the latest
+version of
+.BR bash .
+The latest version is always available from
+\fIftp://ftp.gnu.org/pub/gnu/bash/\fP.
+.PP
+Once you have determined that a bug actually exists, use the
+.I bashbug
+command to submit a bug report.
+If you have a fix, you are encouraged to mail that as well!
+Suggestions and `philosophical' bug reports may be mailed
+to \fIbug-bash@gnu.org\fP or posted to the Usenet
+newsgroup
+.BR gnu.bash.bug .
+.PP
+ALL bug reports should include:
+.PP
+.PD 0
+.TP 20
+The version number of \fBbash\fR
+.TP
+The hardware and operating system
+.TP
+The compiler used to compile
+.TP
+A description of the bug behaviour
+.TP
+A short script or `recipe' which exercises the bug
+.PD
+.PP
+.I bashbug
+inserts the first three items automatically into the template
+it provides for filing a bug report.
+.PP
+Comments and bug reports concerning
+this manual page should be directed to
+.IR chet.ramey@case.edu .
+.SH BUGS
+.PP
+It's too big and too slow.
+.PP
+There are some subtle differences between 
+.B bash
+and traditional versions of
+.BR sh ,
+mostly because of the
+.SM
+.B POSIX
+specification.
+.PP
+Aliases are confusing in some uses.
+.PP
+Shell builtin commands and functions are not stoppable/restartable.
+.PP
+Compound commands and command sequences of the form `a ; b ; c'
+are not handled gracefully when process suspension is attempted.
+When a process is stopped, the shell immediately executes the next
+command in the sequence.
+It suffices to place the sequence of commands between
+parentheses to force it into a subshell, which may be stopped as
+a unit.
+.PP
+Array variables may not (yet) be exported.
+.PP
+There may be only one active coprocess at a time.
+.zZ
+.zY

diff --git a/doc/bashref.texi b/doc/bashref.texi
index dddf4e71c1ae62f7caf26d87a69c2edc9817ff4a..05193c5b78094fdd5738710959ccac4ff56a1dc0 100644 (file)
--- a/doc/bashref.texi
+++ b/doc/bashref.texi
@@ -1255,7 +1255,7 @@ find . -depth 1 \! -name '.*' -print0 | parallel -0 -X mv @{@} destdir
 GNU Parallel can replace certain common idioms that operate on lines read
 from a file (in this case, filenames listed one per line):
 @example
-       while read -r x; do
+       while IFS= read -r x; do
                do-something1 "$x" "config-$x"
                do-something2 < "$x"
        done < file | process-output
@@ -1281,7 +1281,7 @@ Parallel can take arguments from the command line; the above can also be
 written as
 
 @example
-parallel "zcat {} | bzip2 >{.}.bz2 && rm {}" ::: *.gz
+parallel "zcat @{@} | bzip2 >@{.@}.bz2 && rm @{@}" ::: *.gz
 @end example
 
 If a command generates output, you may want to preserve the input order in
@@ -4255,7 +4255,8 @@ to the last @var{name}.
 If there are fewer words read from the input stream than names,
 the remaining names are assigned empty values.
 The characters in the value of the @env{IFS} variable
-are used to split the line into words.
+are used to split the line into words using the same rules the shell
+uses for expansion (described above in @ref{Word Splitting}).
 The backslash character @samp{\} may be used to remove any special
 meaning for the next character read and for line continuation.
 If no names are supplied, the line read is assigned to the
@@ -4934,7 +4935,7 @@ Bash versions 4.0 and later interrupt the list as if the shell received the
 interrupt; previous versions continue with the next command in the list.
 
 @item compat41
-If set, Bash, when in posix mode, treats a single quote in a double-quoted
+If set, Bash, when in @sc{posix} mode, treats a single quote in a double-quoted
 parameter expansion as a special character.  The single quotes must match
 (an even number) and the characters between the single quotes are considered
 quoted.  This is the behavior of @sc{posix} mode through version 4.1.

diff --git a/doc/bashref.texi~ b/doc/bashref.texi~
index 2608ea11b4ffd440e9229c4a6cd78db72457a832..3a12315052ef898d0be084309e5b316122bf4f84 100644 (file)
--- a/doc/bashref.texi~
+++ b/doc/bashref.texi~
@@ -1234,9 +1234,9 @@ ls | parallel mv @{@} destdir
 @end example
 
 As you can see, the @{@} is replaced with each line read from standard input.
-While this will work in most instances, it is not sufficient to deal with all
-filenames.  If you need to accommodate special characters in filenames, you
-can use
+While using @code{ls} will work in most instances, it is not sufficient to
+deal with all filenames.
+If you need to accommodate special characters in filenames, you can use
 
 @example
 find . -depth 1 \! -name '.*' -print0 | parallel -0 mv @{@} destdir
@@ -1255,7 +1255,7 @@ find . -depth 1 \! -name '.*' -print0 | parallel -0 -X mv @{@} destdir
 GNU Parallel can replace certain common idioms that operate on lines read
 from a file (in this case, filenames listed one per line):
 @example
-       while read -r x; do
+       while IFS= read -r x; do
                do-something1 "$x" "config-$x"
                do-something2 < "$x"
        done < file | process-output
@@ -1275,8 +1275,8 @@ ls *.gz | parallel -j+0 "zcat @{@} | bzip2 >@{.@}.bz2 && rm @{@}"
 @noindent
 This will recompress all files in the current directory with names ending
 in .gz using bzip2, running one job per CPU (-j+0) in parallel.
-We use @code{ls} for brevity here; using @code{find} as above is more
-robust in the face of filenames containing unexpected characters.
+(We use @code{ls} for brevity here; using @code{find} as above is more
+robust in the face of filenames containing unexpected characters.)
 Parallel can take arguments from the command line; the above can also be
 written as
 
@@ -4255,7 +4255,8 @@ to the last @var{name}.
 If there are fewer words read from the input stream than names,
 the remaining names are assigned empty values.
 The characters in the value of the @env{IFS} variable
-are used to split the line into words.
+are used to split the line into words using the same rules the shell
+uses for expansion (described above in @ref{Word Splitting}).
 The backslash character @samp{\} may be used to remove any special
 meaning for the next character read and for line continuation.
 If no names are supplied, the line read is assigned to the
@@ -4934,7 +4935,7 @@ Bash versions 4.0 and later interrupt the list as if the shell received the
 interrupt; previous versions continue with the next command in the list.
 
 @item compat41
-If set, Bash, when in posix mode, treats a single quote in a double-quoted
+If set, Bash, when in @sc{posix} mode, treats a single quote in a double-quoted
 parameter expansion as a special character.  The single quotes must match
 (an even number) and the characters between the single quotes are considered
 quoted.  This is the behavior of @sc{posix} mode through version 4.1.

diff --git a/doc/version.texi b/doc/version.texi
index 6b0c1af48dfb6d9f384a9a5c316e3765bf9a58cf..feccba92450cd75a4ed1d380b436cc7b276426b3 100644 (file)
--- a/doc/version.texi
+++ b/doc/version.texi
@@ -2,9 +2,9 @@
 Copyright (C) 1988-2013 Free Software Foundation, Inc.
 @end ignore
 
-@set LASTCHANGE Sat Mar  2 20:26:13 EST 2013
+@set LASTCHANGE Sun Mar 10 12:10:36 EDT 2013
 
-@set EDITION 4.2
-@set VERSION 4.2
-@set UPDATED 2 March 2013 
+@set EDITION 4.3
+@set VERSION 4.3
+@set UPDATED 10 March 2013 
 @set UPDATED-MONTH March 2013 

diff --git a/doc/version.texi~ b/doc/version.texi~
index 17bfd8a292ead7a16f94c6f189b1775560dd93b4..6b0c1af48dfb6d9f384a9a5c316e3765bf9a58cf 100644 (file)
--- a/doc/version.texi~
+++ b/doc/version.texi~
@@ -2,9 +2,9 @@
 Copyright (C) 1988-2013 Free Software Foundation, Inc.
 @end ignore
 
-@set LASTCHANGE Tue Jan  8 15:50:49 EST 2013
+@set LASTCHANGE Sat Mar  2 20:26:13 EST 2013
 
 @set EDITION 4.2
 @set VERSION 4.2
-@set UPDATED 8 January 2013 
-@set UPDATED-MONTH January 2013 
+@set UPDATED 2 March 2013 
+@set UPDATED-MONTH March 2013 

diff --git a/expr.c b/expr.c
index 47934a59a87201fd8361215aec3726a8510623c6..ac0330183d706d78edf3bf3de8aad037ed48ec9f 100644 (file)
--- a/expr.c
+++ b/expr.c
@@ -82,6 +82,7 @@
 #include "bashintl.h"
 
 #include "shell.h"
+#include "typemax.h"           /* INTMAX_MAX, INTMAX_MIN */
 
 /* Because of the $((...)) construct, expressions may include newlines.
    Here is a macro which accepts newlines, tabs and spaces as whitespace. */

diff --git a/include/typemax.h b/include/typemax.h
index 300b1133a09b0183eab99acfa83077cac1bfe5ad..aa21c9c66186878e34bcaecc2bf3633be6a3a685 100644 (file)
--- a/include/typemax.h
+++ b/include/typemax.h
@@ -96,4 +96,8 @@ static const unsigned long long int maxquad = ULLONG_MAX;
 #  define SSIZE_MAX    32767           /* POSIX minimum max */
 #endif
 
+#ifndef SIZE_MAX
+#  define SIZE_MAX     65535           /* POSIX minimum max */
+#endif
+
 #endif /* _SH_TYPEMAX_H */

diff --git a/lib/glob/glob.c b/lib/glob/glob.c
index 9aae6f64c33d81542324472d8383fc986822c141..a10fff18be5f81ed7b55d105bbe4d996f25b4a31 100644 (file)
--- a/lib/glob/glob.c
+++ b/lib/glob/glob.c
@@ -208,7 +208,11 @@ extglob_skipname (pat, dname, flags)
     return r;
 
   *pe = '\0';
+#  if defined (HANDLE_MULTIBYTE)
   r = mbskipname (pp, dname, flags);   /*(*/
+#  else
+  r = skipname (pp, dname, flags);     /*(*/
+#  endif
   *pe = ')';
   return r;
 }

diff --git a/lib/readline/colors.c b/lib/readline/colors.c
index 7a271f26ca4bad536782d94853232a31913a256d..a74ca702f29c9bfd1b81e9612882b47151ee0f1a 100644 (file)
--- a/lib/readline/colors.c
+++ b/lib/readline/colors.c
@@ -112,6 +112,8 @@ _rl_print_color_indicator (char *f)
   mode_t mode;
   int linkok;
 
+  int stat_ok;
+
   name = f;
 
   /* This should already have undergone tilde expansion */
@@ -124,9 +126,9 @@ _rl_print_color_indicator (char *f)
     }
 
 #if defined (HAVE_LSTAT)
-  int stat_ok = lstat(name, &astat);
+  stat_ok = lstat(name, &astat);
 #else
-  int stat_ok = stat(name, &astat);
+  stat_ok = stat(name, &astat);
 #endif
   if( stat_ok == 0 ) {
     mode = astat.st_mode;

diff --git a/lib/readline/nls.c b/lib/readline/nls.c
index a7dd0c27f4807b8f5bdc0e1f8f3e3ff2ebf360bb..d3b36344f103b20945158f2e8a3db7a8a993d5f7 100644 (file)
--- a/lib/readline/nls.c
+++ b/lib/readline/nls.c
@@ -114,7 +114,7 @@ utf8locale (lspec)
 
   if (cp == 0 || len < 4 || len > 5)
     return 0;
-  return ((len == 5) ? strncmp (cp. "UTF-8", len) == 0 : strncmp (cp, "utf8", 4) == 0);
+  return ((len == 5) ? strncmp (cp, "UTF-8", len) == 0 : strncmp (cp, "utf8", 4) == 0);
 #endif
 }
 

diff --git a/lib/sh/strtrans.c b/lib/sh/strtrans.c
index d7cbc30ddb5f265cc40567936b2aede672c6682b..18ba05a58c0e6b8217aaff2909cd60db3cefcd58 100644 (file)
--- a/lib/sh/strtrans.c
+++ b/lib/sh/strtrans.c
@@ -212,8 +212,8 @@ ansic_quote (str, flags, rlen)
   int l, rsize;
   unsigned char c;
   size_t clen;
-#if defined (HANDLE_MULTIBYTE)
   int b;
+#if defined (HANDLE_MULTIBYTE)
   wchar_t wc;
 #endif
 

diff --git a/parse.y b/parse.y
index 61f0f7c5a8eeb1d0b848662bf7cc4d3961795e21..843c8180ccafe8bc4dcaa7e2e5e7a60759027704 100644 (file)
--- a/parse.y
+++ b/parse.y
@@ -45,6 +45,7 @@
 #define NEED_STRFTIME_DECL     /* used in externs.h */
 
 #include "shell.h"
+#include "typemax.h"           /* SIZE_MAX if needed */
 #include "trap.h"
 #include "flags.h"
 #include "parser.h"

diff --git a/po/sl.po b/po/sl.po
index 0d72bd30c1468b052900714a103397318c9d3ea2..f929d89a1611697f0e3e28cb79bbac25c146b3d2 100644 (file)
--- a/po/sl.po
+++ b/po/sl.po
@@ -1,17 +1,17 @@
-# Slovenian translation for bash.
-# Copyright (C) 2012 Free Software Foundation, Inc.
+# Slovenian translation of bash.
+# Copyright (C) 2012 - 2013 Free Software Foundation, Inc.
 # This file is distributed under the same license as the bash package.
-# Klemen Košir <klemen.kosir@gmx.com>, 2012.
-# Andrej Žnidaršič <andrej.znidarsic@gmail.com>, 2012.
-# Damir Jerovšek <damir.jerovsek@gmail.com>, 2012.
+#
+# Damir Jerovšek <damir.jerovsek@gmail.com>, 2012 - 2013.
+# Klemen Košir <klemen913@gmail.com>, 2012 - 2013.
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: bash 4.2\n"
+"Project-Id-Version: bash-4.2\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2011-01-28 22:09-0500\n"
-"PO-Revision-Date: 2012-05-29 16:17+0100\n"
-"Last-Translator: Klemen Košir <klemen.kosir@gmx.com>\n"
+"PO-Revision-Date: 2013-03-09 20:21+0100\n"
+"Last-Translator: Klemen Košir <klemen913@gmail.com>\n"
 "Language-Team: Slovenian <translation-team-sl@lists.sourceforge.net>\n"
 "Language: sl\n"
 "MIME-Version: 1.0\n"
@@ -1726,7 +1726,7 @@ msgstr "%s: ni mogoče dodeliti seznama članu polja"
 
 #: subst.c:4979 subst.c:4995
 msgid "cannot make pipe for process substitution"
-msgstr "ni mogoče ustvariti pipe za zamenjavo opravila"
+msgstr "ni mogoče ustvariti cevi za zamenjavo opravila"
 
 #: subst.c:5027
 msgid "cannot make child for process substitution"

diff --git a/support/mkdist b/support/mkdist
index ff38764343f4e7fcefe8570591294899e6de4ef3..282431d4ad319017c5ed9ecb694313b90868fcce 100755 (executable)
--- a/support/mkdist
+++ b/support/mkdist
@@ -2,7 +2,7 @@
 #
 # mkdist - make a distribution directory from a master manifest file
 #
-# usage: mkdist [-m manifest] [-s srcdir] [-r rootname] [-v] version
+# usage: mkdist [-m manifest] [-s srcdir] [-r rootname] [-t] [-v] version
 #
 # SRCDIR defaults to src
 # MANIFEST defaults to $SRCDIR/MANIFEST
@@ -31,7 +31,7 @@ ROOTNAME=bash
 
 usage()
 {
-       echo usage: mkdist [-m manifest] [-s srcdir] [-r rootname] [-v] version 1>&2
+       echo usage: mkdist [-m manifest] [-s srcdir] [-r rootname] [-t] [-v] version 1>&2
        exit 2
 }
 
@@ -42,12 +42,13 @@ vmsg()
        fi
 }
 
-while getopts m:s:r:v name
+while getopts m:s:r:tv name
 do
        case $name in
        m)      MANIFEST=$OPTARG ;;
        s)      SRCDIR=$OPTARG ;;
        r)      ROOTNAME=$OPTARG ;;
+       t)      maketar=yes ;;
        v)      verbose=yes ;;
        ?)      usage ;;
        esac
@@ -66,6 +67,8 @@ fi
 version=$1
 newdir=${ROOTNAME}-$version
 
+tarfile=${newdir}.tar
+
 vmsg creating distribution for $ROOTNAME version $version in $newdir
 
 if [ ! -d $newdir ]; then
@@ -117,4 +120,10 @@ done < $MANIFEST
 
 vmsg $newdir created
 
+if [ -n "$maketar" ]; then
+       tar cf ${tarfile} $newdir
+       gzip $tarfile
+       vmsg ${tarfile}.gz created
+fi
+
 exit 0

diff --git a/tests/RUN-ONE-TEST b/tests/RUN-ONE-TEST
index 72ec06a2c1fd8dde92acea5e8ac773e35f1d061b..3efcf32d68e9722024b6ca9d67f9e81b2aa5ac04 100755 (executable)
--- a/tests/RUN-ONE-TEST
+++ b/tests/RUN-ONE-TEST
@@ -1,4 +1,4 @@
-BUILD_DIR=/usr/local/build/bash/bash-current
+BUILD_DIR=/usr/local/build/chet/bash/bash-current
 THIS_SH=$BUILD_DIR/bash
 PATH=$PATH:$BUILD_DIR
 

diff --git a/version.c b/version.c
index 1e011a05ac5d262c45a17cb6db8fd88cbb013d31..3fa4aeb2f236496a58c404497a09345b5e2b1641 100644 (file)
--- a/version.c
+++ b/version.c
@@ -1,6 +1,6 @@
 /* version.c -- distribution and version numbers. */
 
-/* Copyright (C) 1989-2012 Free Software Foundation, Inc.
+/* Copyright (C) 1989-2013 Free Software Foundation, Inc.
 
    This file is part of GNU Bash, the Bourne Again SHell.
 
@@ -43,7 +43,7 @@ const char * const release_status = (char *)0;
 #endif
 const char * const sccs_version = SCCSVERSION;
 
-const char * const bash_copyright = N_("Copyright (C) 2012 Free Software Foundation, Inc.");
+const char * const bash_copyright = N_("Copyright (C) 2013 Free Software Foundation, Inc.");
 const char * const bash_license = N_("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
 
 /* If == 31, shell compatible with bash-3.1, == 32 with bash-3.2, and so on */

diff --git a/version.c~ b/version.c~
new file mode 100644 (file)
index 0000000..1e011a0
--- /dev/null
+++ b/version.c~
@@ -0,0 +1,94 @@
+/* version.c -- distribution and version numbers. */
+
+/* Copyright (C) 1989-2012 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "stdc.h"
+
+#include "version.h"
+#include "patchlevel.h"
+#include "conftypes.h"
+
+#include "bashintl.h"
+
+extern char *shell_name;
+
+/* Defines from version.h */
+const char * const dist_version = DISTVERSION;
+const int patch_level = PATCHLEVEL;
+const int build_version = BUILDVERSION;
+#ifdef RELSTATUS
+const char * const release_status = RELSTATUS;
+#else
+const char * const release_status = (char *)0;
+#endif
+const char * const sccs_version = SCCSVERSION;
+
+const char * const bash_copyright = N_("Copyright (C) 2012 Free Software Foundation, Inc.");
+const char * const bash_license = N_("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
+
+/* If == 31, shell compatible with bash-3.1, == 32 with bash-3.2, and so on */
+int shell_compatibility_level = DEFAULT_COMPAT_LEVEL;
+
+/* Functions for getting, setting, and displaying the shell version. */
+
+/* Forward declarations so we don't have to include externs.h */
+extern char *shell_version_string __P((void));
+extern void show_shell_version __P((int));
+
+/* Give version information about this shell. */
+char *
+shell_version_string ()
+{
+  static char tt[32] = { '\0' };
+
+  if (tt[0] == '\0')
+    {
+      if (release_status)
+#if defined (HAVE_SNPRINTF)
+       snprintf (tt, sizeof (tt), "%s.%d(%d)-%s", dist_version, patch_level, build_version, release_status);
+#else
+       sprintf (tt, "%s.%d(%d)-%s", dist_version, patch_level, build_version, release_status);
+#endif
+      else
+#if defined (HAVE_SNPRINTF)
+       snprintf (tt, sizeof (tt), "%s.%d(%d)", dist_version, patch_level, build_version);
+#else
+       sprintf (tt, "%s.%d(%d)", dist_version, patch_level, build_version);
+#endif
+    }
+  return tt;
+}
+
+void
+show_shell_version (extended)
+     int extended;
+{
+  printf (_("GNU bash, version %s (%s)\n"), shell_version_string (), MACHTYPE);
+  if (extended)
+    {
+      printf ("%s\n", _(bash_copyright));
+      printf ("%s\n", _(bash_license));
+      printf ("%s\n", _("This is free software; you are free to change and redistribute it."));
+      printf ("%s\n", _("There is NO WARRANTY, to the extent permitted by law."));
+    }
+}