## -*- text -*- ##
# Master Makefile for the GNU readline library.
-# Copyright (C) 1994, 1998 Free Software Foundation, Inc.
+# Copyright (C) 1994 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
RL_LIBRARY_NAME = readline
srcdir = @srcdir@
-VPATH = @srcdir@
+VPATH = .:@srcdir@
top_srcdir = @top_srcdir@
BUILD_DIR = @BUILD_DIR@
CONFIG_FILES= CONFIG_HEADERS=config.h ./config.status
echo > $@
-# CYGNUS LOCAL: Never run autoconf.
-#$(srcdir)/configure: $(srcdir)/configure.in Comment-me-out in distribution
-# cd $(srcdir) && autoconf Comment-me-out in distribution
+$(srcdir)/configure: $(srcdir)/configure.in ## Comment-me-out in distribution
+ cd $(srcdir) && autoconf ## Comment-me-out in distribution
+
shared: force
-test -d shlib || mkdir shlib
force:
-## CYGNUS LOCAL
-## Don't mess with people's installed readline's.
-## This tries to install this version of readline over whatever
-## version is already installed on the system (which could be a
-## newer version). There is no real reason for us to install
-## readline along with GDB. GDB links statically against readline,
-## so it doesn't depend on us installing it on the system.
-
-install:
-
-#install: installdirs $(STATIC_LIBS)
-# for f in ${INSTALLED_HEADERS}; do \
-# $(INSTALL_DATA) $(srcdir)/$$f $(includedir)/readline ; \
-# done
-# -( if test -f $(libdir)/libreadline.a ; then $(MV) $(libdir)/libreadline.a $(libdir)/libreadline.old; fi )
-# $(INSTALL_DATA) libreadline.a $(libdir)/libreadline.a
-# -test -n "$(RANLIB)" && $(RANLIB) -t $(libdir)/libreadline.a
-# -( if test -f $(libdir)/libhistory.a; then $(MV) $(libdir)/libhistory.a $(libdir)/libhistory.old; fi )
-# $(INSTALL_DATA) libhistory.a $(libdir)/libhistory.a
-# -test -n "$(RANLIB)" && $(RANLIB) -t $(libdir)/libhistory.a
-# -( if test -d doc ; then \
-# cd doc && \
-# ${MAKE} ${MFLAGS} infodir=$(infodir) $@; \
-# fi )
+install: installdirs $(STATIC_LIBS)
+ for f in ${INSTALLED_HEADERS}; do \
+ $(INSTALL_DATA) $(srcdir)/$$f $(includedir)/readline ; \
+ done
+ -$(MV) $(libdir)/libreadline.a $(libdir)/libreadline.old
+ $(INSTALL_DATA) libreadline.a $(libdir)/libreadline.a
+ -test -n "$(RANLIB)" && $(RANLIB) -t $(libdir)/libreadline.a
+ -$(MV) $(libdir)/libhistory.a $(libdir)/libhistory.old
+ $(INSTALL_DATA) libhistory.a $(libdir)/libhistory.a
+ -test -n "$(RANLIB)" && $(RANLIB) -t $(libdir)/libhistory.a
+ -( if test -d doc ; then \
+ cd doc && \
+ ${MAKE} ${MFLAGS} infodir=$(infodir) $@; \
+ fi )
installdirs: $(srcdir)/support/mkdirs
-$(SHELL) $(srcdir)/support/mkdirs $(includedir) \
/* Definitions pulled in from aclocal.m4. */
#undef VOID_SIGHANDLER
-#undef GWINSZ_IN_SYS_IOCTL
+#undef TIOCGWINSZ_IN_SYS_IOCTL
#undef TIOCSTAT_IN_SYS_IOCTL
#undef HAVE_GETPW_DECLS
-#undef FIONREAD_IN_SYS_IOCTL
-
-#undef HAVE_BSD_SIGNALS
-
-#undef HAVE_LSTAT
-
-#undef HAVE_POSIX_SIGNALS
-
-#undef HAVE_POSIX_SIGSETJMP
-
-#undef HAVE_USG_SIGHOLD
-
-#undef MUST_REINSTALL_SIGHANDLERS
-
-#undef SPEED_T_IN_SYS_TYPES
-
-#undef STRCOLL_BROKEN
-
-#undef STRUCT_DIRENT_HAS_D_FILENO
-
-#undef STRUCT_DIRENT_HAS_D_INO
-
-#undef STRUCT_WINSIZE_IN_SYS_IOCTL
-
-#undef STRUCT_WINSIZE_IN_TERMIOS
-
\f
/* Leave that blank line there!! Autoheader needs it.
If you're adding to this file, keep in mind:
/* config.h.in. Generated automatically from configure.in by autoheader. */
-/* Define if you have the strcoll function and it is properly defined. */
-#undef HAVE_STRCOLL
-
/* Define if on MINIX. */
#undef _MINIX
-/* Define if the system does not provide POSIX.1 features except
- with this defined. */
-#undef _POSIX_1_SOURCE
-
-/* Define if you need to in order for stat and other things to work. */
-#undef _POSIX_SOURCE
-
/* Define as the return type of signal handlers (int or void). */
#undef RETSIGTYPE
/* Define if the `S_IS*' macros in <sys/stat.h> do not work properly. */
#undef STAT_MACROS_BROKEN
-/* Definitions pulled in from aclocal.m4. */
#undef VOID_SIGHANDLER
-#undef GWINSZ_IN_SYS_IOCTL
-
-#undef TIOCSTAT_IN_SYS_IOCTL
-
-#undef HAVE_GETPW_DECLS
-
-#undef FIONREAD_IN_SYS_IOCTL
-
-#undef HAVE_BSD_SIGNALS
-
-#undef HAVE_LSTAT
-
-#undef HAVE_POSIX_SIGNALS
-
-#undef HAVE_POSIX_SIGSETJMP
-
-#undef HAVE_USG_SIGHOLD
-
-#undef MUST_REINSTALL_SIGHANDLERS
-
-#undef SPEED_T_IN_SYS_TYPES
-
-#undef STRCOLL_BROKEN
-
-#undef STRUCT_DIRENT_HAS_D_FILENO
-
-#undef STRUCT_DIRENT_HAS_D_INO
-
-#undef STRUCT_WINSIZE_IN_SYS_IOCTL
-
-#undef STRUCT_WINSIZE_IN_TERMIOS
-
-/* Define if you have the lstat function. */
+/* Define if you have the lstat function. */
#undef HAVE_LSTAT
/* Define if you have the putenv function. */
/* Define if you have the setenv function. */
#undef HAVE_SETENV
-/* Define if you have the setlocale function. */
-#undef HAVE_SETLOCALE
-
/* Define if you have the strcasecmp function. */
#undef HAVE_STRCASECMP
+/* Define if you have the setlocale function. */
+#undef HAVE_SETLOCALE
+
/* Define if you have the tcgetattr function. */
#undef HAVE_TCGETATTR
+/* Define if you have the strcoll function. */
+#undef HAVE_STRCOLL
+
+#undef STRCOLL_BROKEN
+
/* Define if you have the <dirent.h> header file. */
#undef HAVE_DIRENT_H
-/* Define if you have the <locale.h> header file. */
-#undef HAVE_LOCALE_H
-
/* Define if you have the <ndir.h> header file. */
#undef HAVE_NDIR_H
-/* Define if you have the <stdarg.h> header file. */
-#undef HAVE_STDARG_H
-
/* Define if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define if you have the <varargs.h> header file. */
#undef HAVE_VARARGS_H
+
+/* Define if you have the <stdarg.h> header file. */
+#undef HAVE_STDARG_H
+
+#undef HAVE_LOCALE_H
+
+/* Definitions pulled in from aclocal.m4. */
+#undef VOID_SIGHANDLER
+
+#undef GWINSZ_IN_SYS_IOCTL
+
+#undef STRUCT_WINSIZE_IN_SYS_IOCTL
+
+#undef STRUCT_WINSIZE_IN_TERMIOS
+
+#undef TIOCSTAT_IN_SYS_IOCTL
+
+#undef FIONREAD_IN_SYS_IOCTL
+
+#undef SPEED_T_IN_SYS_TYPES
+
+#undef HAVE_GETPW_DECLS
+
+#undef STRUCT_DIRENT_HAS_D_INO
+
+#undef STRUCT_DIRENT_HAS_D_FILENO
+
+#undef HAVE_BSD_SIGNALS
+
+#undef HAVE_POSIX_SIGNALS
+
+#undef HAVE_USG_SIGHOLD
+
+#undef MUST_REINSTALL_SIGHANDLERS
+
+#undef HAVE_POSIX_SIGSETJMP
+
/* config.h.bot */
/* modify settings or make new ones based on what autoconf tells us. */
#! /bin/sh
-# From configure.in for Readline 4.0, version 2.14, from autoconf version 2.13
+# From configure.in for Readline 4.0, version 2.14, from autoconf version 2.12
LIBVERSION=4.0
# Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.13
+# Generated automatically using autoconf version 2.12
# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
#
# This configure script is free software; the Free Software Foundation
program_transform_name=s,x,x,
silent=
site=
-sitefile=
srcdir=
target=NONE
verbose=
# Initialize some other variables.
subdirs=
MFLAGS= MAKEFLAGS=
-SHELL=${CONFIG_SHELL-/bin/sh}
# Maximum number of lines to put in a shell here document.
ac_max_here_lines=12
--help print this message
--no-create do not create output files
--quiet, --silent do not print \`checking...' messages
- --site-file=FILE use FILE as the site file
--version print the version of autoconf that created configure
Directory and file names:
--prefix=PREFIX install architecture-independent files in PREFIX
-site=* | --site=* | --sit=*)
site="$ac_optarg" ;;
- -site-file | --site-file | --site-fil | --site-fi | --site-f)
- ac_prev=sitefile ;;
- -site-file=* | --site-file=* | --site-fil=* | --site-fi=* | --site-f=*)
- sitefile="$ac_optarg" ;;
-
-srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
ac_prev=srcdir ;;
-srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
verbose=yes ;;
-version | --version | --versio | --versi | --vers)
- echo "configure generated by autoconf version 2.13"
+ echo "configure generated by autoconf version 2.12"
exit 0 ;;
-with-* | --with-*)
srcdir=`echo "${srcdir}" | sed 's%\([^/]\)/*$%\1%'`
# Prefer explicitly selected file to automatically selected ones.
-if test -z "$sitefile"; then
- if test -z "$CONFIG_SITE"; then
- if test "x$prefix" != xNONE; then
- CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
- else
- CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
- fi
+if test -z "$CONFIG_SITE"; then
+ if test "x$prefix" != xNONE; then
+ CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+ else
+ CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
fi
-else
- CONFIG_SITE="$sitefile"
fi
for ac_site_file in $CONFIG_SITE; do
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# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
-ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross
-ac_exeext=
-ac_objext=o
if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
# Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
-
ac_aux_dir=
-for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
+for ac_dir in ./support $srcdir/./support; do
if test -f $ac_dir/install-sh; then
ac_aux_dir=$ac_dir
ac_install_sh="$ac_aux_dir/install-sh -c"
fi
done
if test -z "$ac_aux_dir"; then
- { echo "configure: error: can not find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." 1>&2; exit 1; }
+ { echo "configure: error: can not find install-sh or install.sh in ./support $srcdir/./support" 1>&2; exit 1; }
fi
ac_config_guess=$ac_aux_dir/config.guess
ac_config_sub=$ac_aux_dir/config.sub
ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+
# Make sure we can run config.sub.
-if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
+if $ac_config_sub sun4 >/dev/null 2>&1; then :
else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
fi
echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:660: checking host system type" >&5
+echo "configure:646: checking host system type" >&5
host_alias=$host
case "$host_alias" in
NONE)
case $nonopt in
NONE)
- if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
+ if host_alias=`$ac_config_guess`; then :
else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
fi ;;
*) host_alias=$nonopt ;;
esac ;;
esac
-host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
+host=`$ac_config_sub $host_alias`
host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
# Extract the first word of "gcc", so it can be a program name with args.
set dummy gcc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:701: checking for $ac_word" >&5
+echo "configure:687: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test -n "$CC"; then
ac_cv_prog_CC="$CC" # Let the user override the test.
else
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+ for ac_dir in $PATH; do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/$ac_word; then
ac_cv_prog_CC="gcc"
# Extract the first word of "cc", so it can be a program name with args.
set dummy cc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:731: checking for $ac_word" >&5
+echo "configure:716: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
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else
if test -n "$CC"; then
ac_cv_prog_CC="$CC" # Let the user override the test.
else
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
ac_prog_rejected=no
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
+ for ac_dir in $PATH; do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/$ac_word; then
if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
echo "$ac_t""no" 1>&6
fi
- if test -z "$CC"; then
- case "`uname -s`" in
- *win32* | *WIN32*)
- # Extract the first word of "cl", so it can be a program name with args.
-set dummy cl; ac_word=$2
-echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:782: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
- echo $ac_n "(cached) $ac_c" 1>&6
-else
- if test -n "$CC"; then
- ac_cv_prog_CC="$CC" # Let the user override the test.
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- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
- test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/$ac_word; then
- ac_cv_prog_CC="cl"
- break
- fi
- done
- IFS="$ac_save_ifs"
-fi
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-CC="$ac_cv_prog_CC"
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- echo "$ac_t""$CC" 1>&6
-else
- echo "$ac_t""no" 1>&6
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- ;;
- esac
- fi
test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
fi
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:814: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:764: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
-ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross
-cat > conftest.$ac_ext << EOF
-
-#line 825 "configure"
+cat > conftest.$ac_ext <<EOF
+#line 774 "configure"
#include "confdefs.h"
-
main(){return(0);}
EOF
-if { (eval echo configure:830: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:778: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
ac_cv_prog_cc_works=yes
# If we can't run a trivial program, we are probably using a cross compiler.
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ac_cv_prog_cc_works=no
fi
rm -fr conftest*
-ac_ext=c
-# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
-ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
-cross_compiling=$ac_cv_prog_cc_cross
echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
if test $ac_cv_prog_cc_works = no; then
{ echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
fi
echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:856: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:798: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
cross_compiling=$ac_cv_prog_cc_cross
echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:861: checking whether we are using GNU C" >&5
+echo "configure:803: checking whether we are using GNU C" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
yes;
#endif
EOF
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+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:812: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
ac_cv_prog_gcc=yes
else
ac_cv_prog_gcc=no
if test $ac_cv_prog_gcc = yes; then
GCC=yes
-else
- GCC=
-fi
-
-ac_test_CFLAGS="${CFLAGS+set}"
-ac_save_CFLAGS="$CFLAGS"
-CFLAGS=
-echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:889: checking whether ${CC-cc} accepts -g" >&5
+ ac_test_CFLAGS="${CFLAGS+set}"
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS=
+ echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
+echo "configure:827: checking whether ${CC-cc} accepts -g" >&5
if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
fi
echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
-if test "$ac_test_CFLAGS" = set; then
- CFLAGS="$ac_save_CFLAGS"
-elif test $ac_cv_prog_cc_g = yes; then
- if test "$GCC" = yes; then
+ if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+ elif test $ac_cv_prog_cc_g = yes; then
CFLAGS="-g -O2"
else
- CFLAGS="-g"
- fi
-else
- if test "$GCC" = yes; then
CFLAGS="-O2"
- else
- CFLAGS=
fi
+else
+ GCC=
+ test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:921: checking how to run the C preprocessor" >&5
+echo "configure:855: checking how to run the C preprocessor" >&5
# On Suns, sometimes $CPP names a directory.
if test -n "$CPP" && test -d "$CPP"; then
CPP=
# On the NeXT, cc -E runs the code through the compiler's parser,
# not just through cpp.
cat > conftest.$ac_ext <<EOF
-#line 936 "configure"
+#line 870 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:942: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
-ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+{ (eval echo configure:876: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
:
else
rm -rf conftest*
CPP="${CC-cc} -E -traditional-cpp"
cat > conftest.$ac_ext <<EOF
-#line 953 "configure"
+#line 887 "configure"
#include "confdefs.h"
#include <assert.h>
Syntax Error
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:959: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
-ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
-if test -z "$ac_err"; then
- :
-else
- echo "$ac_err" >&5
- echo "configure: failed program was:" >&5
- cat conftest.$ac_ext >&5
- rm -rf conftest*
- CPP="${CC-cc} -nologo -E"
- cat > conftest.$ac_ext <<EOF
-#line 970 "configure"
-#include "confdefs.h"
-#include <assert.h>
-Syntax Error
-EOF
-ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:976: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
-ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+{ (eval echo configure:893: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
:
else
fi
rm -f conftest*
fi
-rm -f conftest*
-fi
rm -f conftest*
ac_cv_prog_CPP="$CPP"
fi
ac_safe=`echo "minix/config.h" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for minix/config.h""... $ac_c" 1>&6
-echo "configure:1002: checking for minix/config.h" >&5
+echo "configure:917: checking for minix/config.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1007 "configure"
+#line 922 "configure"
#include "confdefs.h"
#include <minix/config.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1012: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
-ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+{ (eval echo configure:927: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
rm -rf conftest*
eval "ac_cv_header_$ac_safe=yes"
fi
-
-if test "x$cross_compiling" = "xyes"; then
- case "${host}" in
- *-cygwin*)
- cross_cache=${srcdir}/cross-build/cygwin.cache
- if test -r "${cross_cache}"; then
- echo "loading cross-build cache file ${cross_cache}"
- . ${cross_cache}
- fi
- LOCAL_CFLAGS="$LOCAL_CFLAGS -I${srcdir}/../libtermcap"
- unset cross_cache
- ;;
- *) echo "configure: cross-compiling for a non-cygwin target is not supported" >&2
- ;;
- esac
-fi
-
-if test "x$cross_compiling" = "xyes"; then
- CROSS_COMPILING_FLAG=-DCROSS_COMPILING
-else
- CROSS_COMPILING_FLAG=
-fi
-
-
-if test -z "$CC_FOR_BUILD"; then
- if test "x$cross_compiling" = "xno"; then
- CC_FOR_BUILD='$(CC)'
- else
- CC_FOR_BUILD=gcc
- fi
-fi
-
-
-
# If we're using gcc and the user hasn't specified CFLAGS, add -O to CFLAGS.
test -n "$GCC" && test -n "$auto_cflags" && CFLAGS="$CFLAGS -O"
if test $ac_cv_prog_gcc = yes; then
echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
-echo "configure:1089: checking whether ${CC-cc} needs -traditional" >&5
+echo "configure:970: checking whether ${CC-cc} needs -traditional" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ac_pattern="Autoconf.*'x'"
cat > conftest.$ac_ext <<EOF
-#line 1095 "configure"
+#line 976 "configure"
#include "confdefs.h"
#include <sgtty.h>
Autoconf TIOCGETP
if test $ac_cv_prog_gcc_traditional = no; then
cat > conftest.$ac_ext <<EOF
-#line 1113 "configure"
+#line 994 "configure"
#include "confdefs.h"
#include <termio.h>
Autoconf TCGETA
# SunOS /usr/etc/install
# IRIX /sbin/install
# AIX /bin/install
-# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1146: checking for a BSD compatible install" >&5
+echo "configure:1026: checking for a BSD compatible install" >&5
if test -z "$INSTALL"; then
if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
- IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":"
+ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
# Account for people who put trailing slashes in PATH elements.
case "$ac_dir/" in
/|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
- # Don't use installbsd from OSF since it installs stuff as root
- # by default.
- for ac_prog in ginstall scoinst install; do
+ for ac_prog in ginstall installbsd scoinst install; do
if test -f $ac_dir/$ac_prog; then
if test $ac_prog = install &&
grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
# AIX install. It has an incompatible calling convention.
+ # OSF/1 installbsd also uses dspmsg, but is usable.
:
else
ac_cv_path_install="$ac_dir/$ac_prog -c"
# It thinks the first close brace ends the variable substitution.
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
-test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
-
test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
# Extract the first word of "ar", so it can be a program name with args.
set dummy ar; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1201: checking for $ac_word" >&5
+echo "configure:1078: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test -n "$AR"; then
ac_cv_prog_AR="$AR" # Let the user override the test.
else
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+ for ac_dir in $PATH; do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/$ac_word; then
ac_cv_prog_AR="ar"
# Extract the first word of "ranlib", so it can be a program name with args.
set dummy ranlib; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1231: checking for $ac_word" >&5
+echo "configure:1107: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test -n "$RANLIB"; then
ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
else
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
- ac_dummy="$PATH"
- for ac_dir in $ac_dummy; do
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+ for ac_dir in $PATH; do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/$ac_word; then
ac_cv_prog_RANLIB="ranlib"
echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
-echo "configure:1263: checking return type of signal handlers" >&5
+echo "configure:1138: checking return type of signal handlers" >&5
if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1268 "configure"
+#line 1143 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <signal.h>
int i;
; return 0; }
EOF
-if { (eval echo configure:1285: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1160: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
ac_cv_type_signal=void
else
echo $ac_n "checking whether stat file-mode macros are broken""... $ac_c" 1>&6
-echo "configure:1305: checking whether stat file-mode macros are broken" >&5
+echo "configure:1180: checking whether stat file-mode macros are broken" >&5
if eval "test \"`echo '$''{'ac_cv_header_stat_broken'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1310 "configure"
+#line 1185 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/stat.h>
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr that defines DIR""... $ac_c" 1>&6
-echo "configure:1365: checking for $ac_hdr that defines DIR" >&5
+echo "configure:1240: checking for $ac_hdr that defines DIR" >&5
if eval "test \"`echo '$''{'ac_cv_header_dirent_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1370 "configure"
+#line 1245 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <$ac_hdr>
DIR *dirp = 0;
; return 0; }
EOF
-if { (eval echo configure:1378: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1253: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
eval "ac_cv_header_dirent_$ac_safe=yes"
else
# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
if test $ac_header_dirent = dirent.h; then
echo $ac_n "checking for opendir in -ldir""... $ac_c" 1>&6
-echo "configure:1403: checking for opendir in -ldir" >&5
+echo "configure:1278: checking for opendir in -ldir" >&5
ac_lib_var=`echo dir'_'opendir | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
ac_save_LIBS="$LIBS"
LIBS="-ldir $LIBS"
cat > conftest.$ac_ext <<EOF
-#line 1411 "configure"
+#line 1286 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
opendir()
; return 0; }
EOF
-if { (eval echo configure:1422: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1297: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
else
echo $ac_n "checking for opendir in -lx""... $ac_c" 1>&6
-echo "configure:1444: checking for opendir in -lx" >&5
+echo "configure:1319: checking for opendir in -lx" >&5
ac_lib_var=`echo x'_'opendir | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
ac_save_LIBS="$LIBS"
LIBS="-lx $LIBS"
cat > conftest.$ac_ext <<EOF
-#line 1452 "configure"
+#line 1327 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
opendir()
; return 0; }
EOF
-if { (eval echo configure:1463: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1338: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
for ac_func in strcasecmp select setenv putenv tcgetattr setlocale lstat
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1489: checking for $ac_func" >&5
+echo "configure:1364: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1494 "configure"
+#line 1369 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */
; return 0; }
EOF
-if { (eval echo configure:1517: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1392: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_func_$ac_func=yes"
else
echo $ac_n "checking for working strcoll""... $ac_c" 1>&6
-echo "configure:1543: checking for working strcoll" >&5
+echo "configure:1418: checking for working strcoll" >&5
if eval "test \"`echo '$''{'ac_cv_func_strcoll_works'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ac_cv_func_strcoll_works=no
else
cat > conftest.$ac_ext <<EOF
-#line 1551 "configure"
+#line 1426 "configure"
#include "confdefs.h"
#include <string.h>
main ()
strcoll ("123", "456") >= 0);
}
EOF
-if { (eval echo configure:1561: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1436: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
ac_cv_func_strcoll_works=yes
else
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1590: checking for $ac_hdr" >&5
+echo "configure:1465: checking for $ac_hdr" >&5
if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1595 "configure"
+#line 1470 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1600: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
-ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+{ (eval echo configure:1475: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then
rm -rf conftest*
eval "ac_cv_header_$ac_safe=yes"
echo $ac_n "checking for type of signal functions""... $ac_c" 1>&6
-echo "configure:1629: checking for type of signal functions" >&5
+echo "configure:1504: checking for type of signal functions" >&5
if eval "test \"`echo '$''{'bash_cv_signal_vintage'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1635 "configure"
+#line 1510 "configure"
#include "confdefs.h"
#include <signal.h>
int main() {
; return 0; }
EOF
-if { (eval echo configure:1648: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1523: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
bash_cv_signal_vintage=posix
else
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
-#line 1657 "configure"
+#line 1532 "configure"
#include "confdefs.h"
#include <signal.h>
int main() {
; return 0; }
EOF
-if { (eval echo configure:1667: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1542: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
bash_cv_signal_vintage=4.2bsd
else
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
-#line 1676 "configure"
+#line 1551 "configure"
#include "confdefs.h"
#include <signal.h>
; return 0; }
EOF
-if { (eval echo configure:1689: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1564: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
bash_cv_signal_vintage=svr3
else
echo $ac_n "checking if signal handlers must be reinstalled when invoked""... $ac_c" 1>&6
-echo "configure:1730: checking if signal handlers must be reinstalled when invoked" >&5
+echo "configure:1605: checking if signal handlers must be reinstalled when invoked" >&5
if eval "test \"`echo '$''{'bash_cv_must_reinstall_sighandlers'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
else
cat > conftest.$ac_ext <<EOF
-#line 1740 "configure"
+#line 1615 "configure"
#include "confdefs.h"
#include <signal.h>
}
EOF
-if { (eval echo configure:1787: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1662: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
bash_cv_must_reinstall_sighandlers=no
else
echo $ac_n "checking for presence of POSIX-style sigsetjmp/siglongjmp""... $ac_c" 1>&6
-echo "configure:1812: checking for presence of POSIX-style sigsetjmp/siglongjmp" >&5
+echo "configure:1687: checking for presence of POSIX-style sigsetjmp/siglongjmp" >&5
if eval "test \"`echo '$''{'bash_cv_func_sigsetjmp'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
else
cat > conftest.$ac_ext <<EOF
-#line 1822 "configure"
+#line 1697 "configure"
#include "confdefs.h"
#ifdef HAVE_UNISTD_H
#endif
}
EOF
-if { (eval echo configure:1863: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1738: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
bash_cv_func_sigsetjmp=present
else
fi
echo $ac_n "checking for lstat""... $ac_c" 1>&6
-echo "configure:1886: checking for lstat" >&5
+echo "configure:1761: checking for lstat" >&5
if eval "test \"`echo '$''{'bash_cv_func_lstat'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1891 "configure"
+#line 1766 "configure"
#include "confdefs.h"
#include <sys/types.h>
lstat(".",(struct stat *)0);
; return 0; }
EOF
-if { (eval echo configure:1901: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1776: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
bash_cv_func_lstat=yes
else
fi
echo $ac_n "checking whether programs are able to redeclare getpw functions""... $ac_c" 1>&6
-echo "configure:1922: checking whether programs are able to redeclare getpw functions" >&5
+echo "configure:1797: checking whether programs are able to redeclare getpw functions" >&5
if eval "test \"`echo '$''{'bash_cv_can_redecl_getpw'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 1927 "configure"
+#line 1802 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <pwd.h>
struct passwd *z; z = getpwent(); z = getpwuid(0); z = getpwnam("root");
; return 0; }
EOF
-if { (eval echo configure:1938: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1813: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_can_redecl_getpw=yes
else
echo $ac_n "checking whether or not strcoll and strcmp differ""... $ac_c" 1>&6
-echo "configure:1960: checking whether or not strcoll and strcmp differ" >&5
+echo "configure:1835: checking whether or not strcoll and strcmp differ" >&5
if eval "test \"`echo '$''{'bash_cv_func_strcoll_broken'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
else
cat > conftest.$ac_ext <<EOF
-#line 1970 "configure"
+#line 1845 "configure"
#include "confdefs.h"
#include <stdio.h>
}
EOF
-if { (eval echo configure:2009: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1884: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then
bash_cv_func_strcoll_broken=yes
else
echo $ac_n "checking whether signal handlers are of type void""... $ac_c" 1>&6
-echo "configure:2033: checking whether signal handlers are of type void" >&5
+echo "configure:1908: checking whether signal handlers are of type void" >&5
if eval "test \"`echo '$''{'bash_cv_void_sighandler'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2038 "configure"
+#line 1913 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <signal.h>
int i;
; return 0; }
EOF
-if { (eval echo configure:2053: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1928: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_void_sighandler=yes
else
fi
echo $ac_n "checking for TIOCGWINSZ in sys/ioctl.h""... $ac_c" 1>&6
-echo "configure:2073: checking for TIOCGWINSZ in sys/ioctl.h" >&5
+echo "configure:1948: checking for TIOCGWINSZ in sys/ioctl.h" >&5
if eval "test \"`echo '$''{'bash_cv_tiocgwinsz_in_ioctl'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2078 "configure"
+#line 1953 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/ioctl.h>
int x = TIOCGWINSZ;
; return 0; }
EOF
-if { (eval echo configure:2086: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1961: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_tiocgwinsz_in_ioctl=yes
else
fi
echo $ac_n "checking for TIOCSTAT in sys/ioctl.h""... $ac_c" 1>&6
-echo "configure:2107: checking for TIOCSTAT in sys/ioctl.h" >&5
+echo "configure:1982: checking for TIOCSTAT in sys/ioctl.h" >&5
if eval "test \"`echo '$''{'bash_cv_tiocstat_in_ioctl'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2112 "configure"
+#line 1987 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/ioctl.h>
int x = TIOCSTAT;
; return 0; }
EOF
-if { (eval echo configure:2120: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1995: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_tiocstat_in_ioctl=yes
else
fi
echo $ac_n "checking for FIONREAD in sys/ioctl.h""... $ac_c" 1>&6
-echo "configure:2141: checking for FIONREAD in sys/ioctl.h" >&5
+echo "configure:2016: checking for FIONREAD in sys/ioctl.h" >&5
if eval "test \"`echo '$''{'bash_cv_fionread_in_ioctl'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2146 "configure"
+#line 2021 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/ioctl.h>
int x = FIONREAD;
; return 0; }
EOF
-if { (eval echo configure:2154: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2029: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_fionread_in_ioctl=yes
else
fi
echo $ac_n "checking for speed_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:2175: checking for speed_t in sys/types.h" >&5
+echo "configure:2050: checking for speed_t in sys/types.h" >&5
if eval "test \"`echo '$''{'bash_cv_speed_t_in_sys_types'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2180 "configure"
+#line 2055 "configure"
#include "confdefs.h"
#include <sys/types.h>
int main() {
speed_t x;
; return 0; }
EOF
-if { (eval echo configure:2187: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2062: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_speed_t_in_sys_types=yes
else
fi
echo $ac_n "checking for struct winsize in sys/ioctl.h and termios.h""... $ac_c" 1>&6
-echo "configure:2208: checking for struct winsize in sys/ioctl.h and termios.h" >&5
+echo "configure:2083: checking for struct winsize in sys/ioctl.h and termios.h" >&5
if eval "test \"`echo '$''{'bash_cv_struct_winsize_header'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2213 "configure"
+#line 2088 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/ioctl.h>
struct winsize x;
; return 0; }
EOF
-if { (eval echo configure:2221: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2096: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_struct_winsize_header=ioctl_h
else
cat conftest.$ac_ext >&5
rm -rf conftest*
cat > conftest.$ac_ext <<EOF
-#line 2229 "configure"
+#line 2104 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <termios.h>
struct winsize x;
; return 0; }
EOF
-if { (eval echo configure:2237: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2112: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_struct_winsize_header=termios_h
else
echo $ac_n "checking if struct dirent has a d_ino member""... $ac_c" 1>&6
-echo "configure:2270: checking if struct dirent has a d_ino member" >&5
+echo "configure:2145: checking if struct dirent has a d_ino member" >&5
if eval "test \"`echo '$''{'bash_cv_dirent_has_dino'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2275 "configure"
+#line 2150 "configure"
#include "confdefs.h"
#include <stdio.h>
; return 0; }
EOF
-if { (eval echo configure:2304: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2179: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_dirent_has_dino=yes
else
echo $ac_n "checking if struct dirent has a d_fileno member""... $ac_c" 1>&6
-echo "configure:2326: checking if struct dirent has a d_fileno member" >&5
+echo "configure:2201: checking if struct dirent has a d_fileno member" >&5
if eval "test \"`echo '$''{'bash_cv_dirent_has_d_fileno'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 2331 "configure"
+#line 2206 "configure"
#include "confdefs.h"
#include <stdio.h>
; return 0; }
EOF
-if { (eval echo configure:2360: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2235: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
bash_cv_dirent_has_d_fileno=yes
else
_bash_needmsg=yes
else
echo $ac_n "checking which library has the termcap functions""... $ac_c" 1>&6
-echo "configure:2389: checking which library has the termcap functions" >&5
+echo "configure:2264: checking which library has the termcap functions" >&5
_bash_needmsg=
fi
if eval "test \"`echo '$''{'bash_cv_termcap_lib'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking for tgetent in -ltermcap""... $ac_c" 1>&6
-echo "configure:2396: checking for tgetent in -ltermcap" >&5
+echo "configure:2271: checking for tgetent in -ltermcap" >&5
ac_lib_var=`echo termcap'_'tgetent | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
ac_save_LIBS="$LIBS"
LIBS="-ltermcap $LIBS"
cat > conftest.$ac_ext <<EOF
-#line 2404 "configure"
+#line 2279 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
tgetent()
; return 0; }
EOF
-if { (eval echo configure:2415: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2290: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
else
echo "$ac_t""no" 1>&6
echo $ac_n "checking for tgetent in -lcurses""... $ac_c" 1>&6
-echo "configure:2434: checking for tgetent in -lcurses" >&5
+echo "configure:2309: checking for tgetent in -lcurses" >&5
ac_lib_var=`echo curses'_'tgetent | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
ac_save_LIBS="$LIBS"
LIBS="-lcurses $LIBS"
cat > conftest.$ac_ext <<EOF
-#line 2442 "configure"
+#line 2317 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
tgetent()
; return 0; }
EOF
-if { (eval echo configure:2453: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2328: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
else
echo "$ac_t""no" 1>&6
echo $ac_n "checking for tgetent in -lncurses""... $ac_c" 1>&6
-echo "configure:2472: checking for tgetent in -lncurses" >&5
+echo "configure:2347: checking for tgetent in -lncurses" >&5
ac_lib_var=`echo ncurses'_'tgetent | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
ac_save_LIBS="$LIBS"
LIBS="-lncurses $LIBS"
cat > conftest.$ac_ext <<EOF
-#line 2480 "configure"
+#line 2355 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
tgetent()
; return 0; }
EOF
-if { (eval echo configure:2491: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2366: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes"
else
if test "X$_bash_needmsg" = "Xyes"; then
echo $ac_n "checking which library has the termcap functions""... $ac_c" 1>&6
-echo "configure:2520: checking which library has the termcap functions" >&5
+echo "configure:2395: checking which library has the termcap functions" >&5
fi
echo "$ac_t""using $bash_cv_termcap_lib" 1>&6
if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
#
if test -f ${srcdir}/support/shobj-conf; then
echo $ac_n "checking configuration for building shared libraries""... $ac_c" 1>&6
-echo "configure:2557: checking configuration for building shared libraries" >&5
+echo "configure:2432: checking configuration for building shared libraries" >&5
eval `${CONFIG_SHELL-/bin/sh} ${srcdir}/support/shobj-conf -C ${CC} -c ${host_cpu} -o ${host_os} -v ${host_vendor}`
# Ultrix sh set writes to stderr and can't be redirected directly,
# and sets the high bit in the cache file unless we assign to the vars.
(set) 2>&1 |
- case `(ac_space=' '; set | grep ac_space) 2>&1` in
+ case `(ac_space=' '; set) 2>&1` in
*ac_space=\ *)
# `set' does not quote correctly, so add quotes (double-quote substitution
# turns \\\\ into \\, and sed turns \\ into \).
echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
-version | --version | --versio | --versi | --vers | --ver | --ve | --v)
- echo "$CONFIG_STATUS generated by autoconf version 2.13"
+ echo "$CONFIG_STATUS generated by autoconf version 2.12"
exit 0 ;;
-help | --help | --hel | --he | --h)
echo "\$ac_cs_usage"; exit 0 ;;
s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
$ac_vpsub
$extrasub
-s%@SHELL@%$SHELL%g
s%@CFLAGS@%$CFLAGS%g
s%@CPPFLAGS@%$CPPFLAGS%g
s%@CXXFLAGS@%$CXXFLAGS%g
-s%@FFLAGS@%$FFLAGS%g
s%@DEFS@%$DEFS%g
s%@LDFLAGS@%$LDFLAGS%g
s%@LIBS@%$LIBS%g
s%@host_os@%$host_os%g
s%@CC@%$CC%g
s%@CPP@%$CPP%g
-s%@CROSS_COMPILING_FLAG@%$CROSS_COMPILING_FLAG%g
-s%@CC_FOR_BUILD@%$CC_FOR_BUILD%g
s%@INSTALL_PROGRAM@%$INSTALL_PROGRAM%g
-s%@INSTALL_SCRIPT@%$INSTALL_SCRIPT%g
s%@INSTALL_DATA@%$INSTALL_DATA%g
s%@AR@%$AR%g
s%@RANLIB@%$RANLIB%g
dnl make sure we are using a recent autoconf version
AC_PREREQ(2.10)
-dnl AC_CONFIG_AUX_DIR(./support)
+AC_CONFIG_AUX_DIR(./support)
AC_CANONICAL_HOST
AC_PROG_CC
AC_MINIX
-dnl BEGIN changes for CYGNUS cross-building for Cygwin
-
-dnl load up the cross-building cache file -- add more cases and cache
-dnl files as necessary
-if test "x$cross_compiling" = "xyes"; then
- case "${host}" in
- *-cygwin*)
- cross_cache=${srcdir}/cross-build/cygwin.cache
- if test -r "${cross_cache}"; then
- echo "loading cross-build cache file ${cross_cache}"
- . ${cross_cache}
- fi
- LOCAL_CFLAGS="$LOCAL_CFLAGS -I${srcdir}/../libtermcap"
- unset cross_cache
- ;;
- *) echo "configure: cross-compiling for a non-cygwin target is not supported" >&2
- ;;
- esac
-fi
-
-if test "x$cross_compiling" = "xyes"; then
- CROSS_COMPILING_FLAG=-DCROSS_COMPILING
-else
- CROSS_COMPILING_FLAG=
-fi
-AC_SUBST(CROSS_COMPILING_FLAG)
-
-if test -z "$CC_FOR_BUILD"; then
- if test "x$cross_compiling" = "xno"; then
- CC_FOR_BUILD='$(CC)'
- else
- CC_FOR_BUILD=gcc
- fi
-fi
-AC_SUBST(CC_FOR_BUILD)
-
-dnl END changes for CYGNUS cross-building for Cygwin
-
# If we're using gcc and the user hasn't specified CFLAGS, add -O to CFLAGS.
test -n "$GCC" && test -n "$auto_cflags" && CFLAGS="$CFLAGS -O"
if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
_rl_last_c_pos <= last_invisible && local_prompt)
{
-#if defined (__MSDOS__)
- putc ('\r', rl_outstream);
-#else
if (term_cr)
tputs (term_cr, 1, _rl_output_character_function);
-#endif
_rl_output_some_chars (local_prompt, nleft);
_rl_last_c_pos = nleft;
}
term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
od > lendiff && _rl_last_c_pos < last_invisible)
{
-#if defined (__MSDOS__)
- putc ('\r', rl_outstream);
-#else
tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
_rl_output_some_chars (local_prompt, lendiff);
_rl_last_c_pos = lendiff;
}
{
if (term_cr)
{
-#if defined (__MSDOS__)
- putc ('\r', rl_outstream);
-#else
tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
_rl_last_c_pos = 0;
}
}
the right thing happens if we have wrapped to a new screen line. */
if (term_cr)
{
-#if defined (__MSDOS__)
- putc ('\r', rl_outstream);
-#else
tputs (term_cr, 1, _rl_output_character_function);
-#endif /* !__MSDOS__ */
_rl_last_c_pos = 0;
-#if defined (__MSDOS__)
- space_to_eol (screenwidth);
- putc ('\r', rl_outstream);
-#else
if (term_clreol)
tputs (term_clreol, 1, _rl_output_character_function);
else
space_to_eol (screenwidth);
tputs (term_cr, 1, _rl_output_character_function);
}
-#endif
if (_rl_last_v_pos > 0)
_rl_move_vert (0);
}
--- /dev/null
+<HTML>
+<HEAD>
+<!-- This HTML file has been created by texi2html 1.52
+ from /usr/homes/chet/src/bash/readline-src/doc/hist.texinfo on 31 December 1998 -->
+
+<TITLE>GNU History Library</TITLE>
+</HEAD>
+<BODY>
+<H1>GNU History Library</H1>
+<H2>Edition 4.0, for <CODE>History Library</CODE> Version 4.0.</H2>
+<H2>December 1998</H2>
+<ADDRESS>Brian Fox, Free Software Foundation</ADDRESS>
+<ADDRESS>Chet Ramey, Case Western Reserve University</ADDRESS>
+<P>
+<P><HR><P>
+<H1>Table of Contents</H1>
+<UL>
+<LI><A NAME="TOC1" HREF="history.html#SEC1">Using History Interactively</A>
+<UL>
+<LI><A NAME="TOC2" HREF="history.html#SEC2">History Expansion</A>
+<UL>
+<LI><A NAME="TOC3" HREF="history.html#SEC3">Event Designators</A>
+<LI><A NAME="TOC4" HREF="history.html#SEC4">Word Designators</A>
+<LI><A NAME="TOC5" HREF="history.html#SEC5">Modifiers</A>
+</UL>
+</UL>
+<LI><A NAME="TOC6" HREF="history.html#SEC6">Programming with GNU History</A>
+<UL>
+<LI><A NAME="TOC7" HREF="history.html#SEC7">Introduction to History</A>
+<LI><A NAME="TOC8" HREF="history.html#SEC8">History Storage</A>
+<LI><A NAME="TOC9" HREF="history.html#SEC9">History Functions</A>
+<UL>
+<LI><A NAME="TOC10" HREF="history.html#SEC10">Initializing History and State Management</A>
+<LI><A NAME="TOC11" HREF="history.html#SEC11">History List Management</A>
+<LI><A NAME="TOC12" HREF="history.html#SEC12">Information About the History List</A>
+<LI><A NAME="TOC13" HREF="history.html#SEC13">Moving Around the History List</A>
+<LI><A NAME="TOC14" HREF="history.html#SEC14">Searching the History List</A>
+<LI><A NAME="TOC15" HREF="history.html#SEC15">Managing the History File</A>
+<LI><A NAME="TOC16" HREF="history.html#SEC16">History Expansion</A>
+</UL>
+<LI><A NAME="TOC17" HREF="history.html#SEC17">History Variables</A>
+<LI><A NAME="TOC18" HREF="history.html#SEC18">History Programming Example</A>
+</UL>
+<LI><A NAME="TOC19" HREF="history.html#SEC19">Concept Index</A>
+<LI><A NAME="TOC20" HREF="history.html#SEC20">Function and Variable Index</A>
+</UL>
+<P><HR><P>
+
+<P>
+This document describes the GNU History library, a programming tool that
+provides a consistent user interface for recalling lines of previously
+typed input.
+
+</P>
+<P>
+Published by the Free Software Foundation <BR>
+675 Massachusetts Avenue, <BR>
+Cambridge, MA 02139 USA
+
+</P>
+<P>
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+</P>
+<P>
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+</P>
+<P>
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Free Software Foundation.
+
+</P>
+<P>
+Copyright (C) 1988-1999 Free Software Foundation, Inc.
+
+</P>
+
+
+
+<H1><A NAME="SEC1" HREF="history.html#TOC1">Using History Interactively</A></H1>
+
+<P>
+This chapter describes how to use the GNU History Library interactively,
+from a user's standpoint. It should be considered a user's guide. For
+information on using the GNU History Library in your own programs,
+see section <A HREF="history.html#SEC6">Programming with GNU History</A>.
+
+</P>
+
+<UL>
+<LI><A HREF="history.html#SEC2">History Interaction</A>: What it feels like using History as a user.
+</UL>
+
+
+
+<H2><A NAME="SEC2" HREF="history.html#TOC2">History Expansion</A></H2>
+<P>
+<A NAME="IDX1"></A>
+
+</P>
+<P>
+The History library provides a history expansion feature that is similar
+to the history expansion provided by <CODE>csh</CODE>. This section
+describes the syntax used to manipulate the history information.
+
+</P>
+<P>
+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.
+
+</P>
+<P>
+History expansion takes place in two parts. The first is to determine
+which line from the history list should be used during substitution.
+The second is to select portions of that line for inclusion into the
+current one. The line selected from the history is called the
+<EM>event</EM>, and the portions of that line that are acted upon are
+called <EM>words</EM>. Various <EM>modifiers</EM> are available to manipulate
+the selected words. The line is broken into words in the same fashion
+that Bash does, so that several words
+surrounded by quotes are considered one word.
+History expansions are introduced by the appearance of the
+history expansion character, which is <SAMP>`!'</SAMP> by default.
+
+</P>
+
+
+<UL>
+<LI><A HREF="history.html#SEC3">Event Designators</A>: How to specify which history line to use.
+<LI><A HREF="history.html#SEC4">Word Designators</A>: Specifying which words are of interest.
+<LI><A HREF="history.html#SEC5">Modifiers</A>: Modifying the results of substitution.
+</UL>
+
+
+
+<H3><A NAME="SEC3" HREF="history.html#TOC3">Event Designators</A></H3>
+<P>
+<A NAME="IDX2"></A>
+
+</P>
+<P>
+An event designator is a reference to a command line entry in the
+history list.
+<A NAME="IDX3"></A>
+
+</P>
+<DL COMPACT>
+
+<DT><CODE>!</CODE>
+<DD>
+Start a history substitution, except when followed by a space, tab,
+the end of the line, <SAMP>`='</SAMP> or <SAMP>`('</SAMP>.
+
+<DT><CODE>!<VAR>n</VAR></CODE>
+<DD>
+Refer to command line <VAR>n</VAR>.
+
+<DT><CODE>!-<VAR>n</VAR></CODE>
+<DD>
+Refer to the command <VAR>n</VAR> lines back.
+
+<DT><CODE>!!</CODE>
+<DD>
+Refer to the previous command. This is a synonym for <SAMP>`!-1'</SAMP>.
+
+<DT><CODE>!<VAR>string</VAR></CODE>
+<DD>
+Refer to the most recent command starting with <VAR>string</VAR>.
+
+<DT><CODE>!?<VAR>string</VAR>[?]</CODE>
+<DD>
+Refer to the most recent command containing <VAR>string</VAR>. The trailing
+<SAMP>`?'</SAMP> may be omitted if the <VAR>string</VAR> is followed immediately by
+a newline.
+
+<DT><CODE>^<VAR>string1</VAR>^<VAR>string2</VAR>^</CODE>
+<DD>
+Quick Substitution. Repeat the last command, replacing <VAR>string1</VAR>
+with <VAR>string2</VAR>. Equivalent to
+<CODE>!!:s/<VAR>string1</VAR>/<VAR>string2</VAR>/</CODE>.
+
+<DT><CODE>!#</CODE>
+<DD>
+The entire command line typed so far.
+
+</DL>
+
+
+
+<H3><A NAME="SEC4" HREF="history.html#TOC4">Word Designators</A></H3>
+
+<P>
+Word designators are used to select desired words from the event.
+A <SAMP>`:'</SAMP> separates the event specification from the word designator. It
+may be omitted if the word designator begins with a <SAMP>`^'</SAMP>, <SAMP>`$'</SAMP>,
+<SAMP>`*'</SAMP>, <SAMP>`-'</SAMP>, or <SAMP>`%'</SAMP>. Words are numbered from the beginning
+of the line, with the first word being denoted by 0 (zero). Words are
+inserted into the current line separated by single spaces.
+
+</P>
+<DL COMPACT>
+
+<DT><CODE>0 (zero)</CODE>
+<DD>
+The <CODE>0</CODE>th word. For many applications, this is the command word.
+
+<DT><CODE><VAR>n</VAR></CODE>
+<DD>
+The <VAR>n</VAR>th word.
+
+<DT><CODE>^</CODE>
+<DD>
+The first argument; that is, word 1.
+
+<DT><CODE>$</CODE>
+<DD>
+The last argument.
+
+<DT><CODE>%</CODE>
+<DD>
+The word matched by the most recent <SAMP>`?<VAR>string</VAR>?'</SAMP> search.
+
+<DT><CODE><VAR>x</VAR>-<VAR>y</VAR></CODE>
+<DD>
+A range of words; <SAMP>`-<VAR>y</VAR>'</SAMP> abbreviates <SAMP>`0-<VAR>y</VAR>'</SAMP>.
+
+<DT><CODE>*</CODE>
+<DD>
+All of the words, except the <CODE>0</CODE>th. This is a synonym for <SAMP>`1-$'</SAMP>.
+It is not an error to use <SAMP>`*'</SAMP> if there is just one word in the event;
+the empty string is returned in that case.
+
+<DT><CODE><VAR>x</VAR>*</CODE>
+<DD>
+Abbreviates <SAMP>`<VAR>x</VAR>-$'</SAMP>
+
+<DT><CODE><VAR>x</VAR>-</CODE>
+<DD>
+Abbreviates <SAMP>`<VAR>x</VAR>-$'</SAMP> like <SAMP>`<VAR>x</VAR>*'</SAMP>, but omits the last word.
+
+</DL>
+
+<P>
+If a word designator is supplied without an event specification, the
+previous command is used as the event.
+
+</P>
+
+
+<H3><A NAME="SEC5" HREF="history.html#TOC5">Modifiers</A></H3>
+
+<P>
+After the optional word designator, you can add a sequence of one or more
+of the following modifiers, each preceded by a <SAMP>`:'</SAMP>.
+
+</P>
+<DL COMPACT>
+
+<DT><CODE>h</CODE>
+<DD>
+Remove a trailing pathname component, leaving only the head.
+
+<DT><CODE>t</CODE>
+<DD>
+Remove all leading pathname components, leaving the tail.
+
+<DT><CODE>r</CODE>
+<DD>
+Remove a trailing suffix of the form <SAMP>`.<VAR>suffix</VAR>'</SAMP>, leaving
+the basename.
+
+<DT><CODE>e</CODE>
+<DD>
+Remove all but the trailing suffix.
+
+<DT><CODE>p</CODE>
+<DD>
+Print the new command but do not execute it.
+
+<DT><CODE>s/<VAR>old</VAR>/<VAR>new</VAR>/</CODE>
+<DD>
+Substitute <VAR>new</VAR> for the first occurrence of <VAR>old</VAR> in the
+event line. Any delimiter may be used in place of <SAMP>`/'</SAMP>.
+The delimiter may be quoted in <VAR>old</VAR> and <VAR>new</VAR>
+with a single backslash. If <SAMP>`&'</SAMP> appears in <VAR>new</VAR>,
+it is replaced by <VAR>old</VAR>. A single backslash will quote
+the <SAMP>`&'</SAMP>. The final delimiter is optional if it is the last
+character on the input line.
+
+<DT><CODE>&</CODE>
+<DD>
+Repeat the previous substitution.
+
+<DT><CODE>g</CODE>
+<DD>
+Cause changes to be applied over the entire event line. Used in
+conjunction with <SAMP>`s'</SAMP>, as in <CODE>gs/<VAR>old</VAR>/<VAR>new</VAR>/</CODE>,
+or with <SAMP>`&'</SAMP>.
+
+</DL>
+
+
+
+<H1><A NAME="SEC6" HREF="history.html#TOC6">Programming with GNU History</A></H1>
+
+<P>
+This chapter describes how to interface programs that you write
+with the GNU History Library.
+It should be considered a technical guide.
+For information on the interactive use of GNU History, see section <A HREF="history.html#SEC1">Using History Interactively</A>.
+
+</P>
+
+<UL>
+<LI><A HREF="history.html#SEC7">Introduction to History</A>: What is the GNU History library for?
+<LI><A HREF="history.html#SEC8">History Storage</A>: How information is stored.
+<LI><A HREF="history.html#SEC9">History Functions</A>: Functions that you can use.
+<LI><A HREF="history.html#SEC17">History Variables</A>: Variables that control behaviour.
+<LI><A HREF="history.html#SEC18">History Programming Example</A>: Example of using the GNU History Library.
+</UL>
+
+
+
+<H2><A NAME="SEC7" HREF="history.html#TOC7">Introduction to History</A></H2>
+
+<P>
+Many programs read input from the user a line at a time. The GNU History
+library is able to keep track of those lines, associate arbitrary data with
+each line, and utilize information from previous lines in composing new
+ones.
+
+</P>
+<P>
+The programmer using the History library has available functions
+for remembering lines on a history list, associating arbitrary data
+with a line, removing lines from the list, searching through the list
+for a line containing an arbitrary text string, and referencing any line
+in the list directly. In addition, a history <EM>expansion</EM> function
+is available which provides for a consistent user interface across
+different programs.
+
+</P>
+<P>
+The user using programs written with the History library has the
+benefit of a consistent user interface with a set of well-known
+commands for manipulating the text of previous lines and using that text
+in new commands. The basic history manipulation commands are similar to
+the history substitution provided by <CODE>csh</CODE>.
+
+</P>
+<P>
+If the programmer desires, he can use the Readline library, which
+includes some history manipulation by default, and has the added
+advantage of command line editing.
+
+</P>
+
+
+<H2><A NAME="SEC8" HREF="history.html#TOC8">History Storage</A></H2>
+
+<P>
+The history list is an array of history entries. A history entry is
+declared as follows:
+
+</P>
+
+<PRE>
+typedef struct _hist_entry {
+ char *line;
+ char *data;
+} HIST_ENTRY;
+</PRE>
+
+<P>
+The history list itself might therefore be declared as
+
+</P>
+
+<PRE>
+HIST_ENTRY **the_history_list;
+</PRE>
+
+<P>
+The state of the History library is encapsulated into a single structure:
+
+</P>
+
+<PRE>
+/* A structure used to pass the current state of the history stuff around. */
+typedef struct _hist_state {
+ HIST_ENTRY **entries; /* Pointer to the entries themselves. */
+ int offset; /* The location pointer within this array. */
+ int length; /* Number of elements within this array. */
+ int size; /* Number of slots allocated to this array. */
+ int flags;
+} HISTORY_STATE;
+</PRE>
+
+<P>
+If the flags member includes <CODE>HS_STIFLED</CODE>, the history has been
+stifled.
+
+</P>
+
+
+<H2><A NAME="SEC9" HREF="history.html#TOC9">History Functions</A></H2>
+
+<P>
+This section describes the calling sequence for the various functions
+present in GNU History.
+
+</P>
+
+<UL>
+<LI><A HREF="history.html#SEC10">Initializing History and State Management</A>: Functions to call when you
+ want to use history in a
+ program.
+<LI><A HREF="history.html#SEC11">History List Management</A>: Functions used to manage the list
+ of history entries.
+<LI><A HREF="history.html#SEC12">Information About the History List</A>: Functions returning information about
+ the history list.
+<LI><A HREF="history.html#SEC13">Moving Around the History List</A>: Functions used to change the position
+ in the history list.
+<LI><A HREF="history.html#SEC14">Searching the History List</A>: Functions to search the history list
+ for entries containing a string.
+<LI><A HREF="history.html#SEC15">Managing the History File</A>: Functions that read and write a file
+ containing the history list.
+<LI><A HREF="history.html#SEC16">History Expansion</A>: Functions to perform csh-like history
+ expansion.
+</UL>
+
+
+
+<H3><A NAME="SEC10" HREF="history.html#TOC10">Initializing History and State Management</A></H3>
+
+<P>
+This section describes functions used to initialize and manage
+the state of the History library when you want to use the history
+functions in your program.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>using_history</B> <I>()</I>
+<DD><A NAME="IDX4"></A>
+Begin a session in which the history functions might be used. This
+initializes the interactive variables.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HISTORY_STATE * <B>history_get_history_state</B> <I>()</I>
+<DD><A NAME="IDX5"></A>
+Return a structure describing the current state of the input history.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>history_set_history_state</B> <I>(HISTORY_STATE *state)</I>
+<DD><A NAME="IDX6"></A>
+Set the state of the history list according to <VAR>state</VAR>.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC11" HREF="history.html#TOC11">History List Management</A></H3>
+
+<P>
+These functions manage individual entries on the history list, or set
+parameters managing the list itself.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>add_history</B> <I>(char *string)</I>
+<DD><A NAME="IDX7"></A>
+Place <VAR>string</VAR> at the end of the history list. The associated data
+field (if any) is set to <CODE>NULL</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>remove_history</B> <I>(int which)</I>
+<DD><A NAME="IDX8"></A>
+Remove history entry at offset <VAR>which</VAR> from the history. The
+removed element is returned so you can free the line, data,
+and containing structure.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>replace_history_entry</B> <I>(int which, char *line, char *data)</I>
+<DD><A NAME="IDX9"></A>
+Make the history entry at offset <VAR>which</VAR> have <VAR>line</VAR> and <VAR>data</VAR>.
+This returns the old entry so you can dispose of the data. In the case
+of an invalid <VAR>which</VAR>, a <CODE>NULL</CODE> pointer is returned.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>clear_history</B> <I>()</I>
+<DD><A NAME="IDX10"></A>
+Clear the history list by deleting all the entries.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>stifle_history</B> <I>(int max)</I>
+<DD><A NAME="IDX11"></A>
+Stifle the history list, remembering only the last <VAR>max</VAR> entries.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>unstifle_history</B> <I>()</I>
+<DD><A NAME="IDX12"></A>
+Stop stifling the history. This returns the previous amount the
+history was stifled. The value is positive if the history was
+stifled, negative if it wasn't.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_is_stifled</B> <I>()</I>
+<DD><A NAME="IDX13"></A>
+Returns non-zero if the history is stifled, zero if it is not.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC12" HREF="history.html#TOC12">Information About the History List</A></H3>
+
+<P>
+These functions return information about the entire history list or
+individual list entries.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY ** <B>history_list</B> <I>()</I>
+<DD><A NAME="IDX14"></A>
+Return a <CODE>NULL</CODE> terminated array of <CODE>HIST_ENTRY</CODE> which is the
+current input history. Element 0 of this list is the beginning of time.
+If there is no history, return <CODE>NULL</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>where_history</B> <I>()</I>
+<DD><A NAME="IDX15"></A>
+Returns the offset of the current history element.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>current_history</B> <I>()</I>
+<DD><A NAME="IDX16"></A>
+Return the history entry at the current position, as determined by
+<CODE>where_history ()</CODE>. If there is no entry there, return a <CODE>NULL</CODE>
+pointer.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>history_get</B> <I>(int offset)</I>
+<DD><A NAME="IDX17"></A>
+Return the history entry at position <VAR>offset</VAR>, starting from
+<CODE>history_base</CODE>. If there is no entry there, or if <VAR>offset</VAR>
+is greater than the history length, return a <CODE>NULL</CODE> pointer.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_total_bytes</B> <I>()</I>
+<DD><A NAME="IDX18"></A>
+Return the number of bytes that the primary history entries are using.
+This function returns the sum of the lengths of all the lines in the
+history.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC13" HREF="history.html#TOC13">Moving Around the History List</A></H3>
+
+<P>
+These functions allow the current index into the history list to be
+set or changed.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_set_pos</B> <I>(int pos)</I>
+<DD><A NAME="IDX19"></A>
+Set the position in the history list to <VAR>pos</VAR>, an absolute index
+into the list.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>previous_history</B> <I>()</I>
+<DD><A NAME="IDX20"></A>
+Back up the current history offset to the previous history entry, and
+return a pointer to that entry. If there is no previous entry, return
+a <CODE>NULL</CODE> pointer.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> HIST_ENTRY * <B>next_history</B> <I>()</I>
+<DD><A NAME="IDX21"></A>
+Move the current history offset forward to the next history entry, and
+return the a pointer to that entry. If there is no next entry, return
+a <CODE>NULL</CODE> pointer.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC14" HREF="history.html#TOC14">Searching the History List</A></H3>
+<P>
+<A NAME="IDX22"></A>
+
+</P>
+<P>
+These functions allow searching of the history list for entries containing
+a specific string. Searching may be performed both forward and backward
+from the current history position. The search may be <EM>anchored</EM>,
+meaning that the string must match at the beginning of the history entry.
+<A NAME="IDX23"></A>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_search</B> <I>(char *string, int direction)</I>
+<DD><A NAME="IDX24"></A>
+Search the history for <VAR>string</VAR>, starting at the current history
+offset. If <VAR>direction</VAR> < 0, then the search is through previous entries,
+else through subsequent. If <VAR>string</VAR> is found, then
+the current history index is set to that history entry, and the value
+returned is the offset in the line of the entry where
+<VAR>string</VAR> was found. Otherwise, nothing is changed, and a -1 is
+returned.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_search_prefix</B> <I>(char *string, int direction)</I>
+<DD><A NAME="IDX25"></A>
+Search the history for <VAR>string</VAR>, starting at the current history
+offset. The search is anchored: matching lines must begin with
+<VAR>string</VAR>. If <VAR>direction</VAR> < 0, then the search is through previous
+entries, else through subsequent. If <VAR>string</VAR> is found, then the
+current history index is set to that entry, and the return value is 0.
+Otherwise, nothing is changed, and a -1 is returned.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_search_pos</B> <I>(char *string, int direction, int pos)</I>
+<DD><A NAME="IDX26"></A>
+Search for <VAR>string</VAR> in the history list, starting at <VAR>pos</VAR>, an
+absolute index into the list. If <VAR>direction</VAR> is negative, the search
+proceeds backward from <VAR>pos</VAR>, otherwise forward. Returns the absolute
+index of the history element where <VAR>string</VAR> was found, or -1 otherwise.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC15" HREF="history.html#TOC15">Managing the History File</A></H3>
+
+<P>
+The History library can read the history from and write it to a file.
+This section documents the functions for managing a history file.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>read_history</B> <I>(char *filename)</I>
+<DD><A NAME="IDX27"></A>
+Add the contents of <VAR>filename</VAR> to the history list, a line at a
+time. If <VAR>filename</VAR> is <CODE>NULL</CODE>, then read from
+<TT>`~/.history'</TT>. Returns 0 if successful, or errno if not.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>read_history_range</B> <I>(char *filename, int from, int to)</I>
+<DD><A NAME="IDX28"></A>
+Read a range of lines from <VAR>filename</VAR>, adding them to the history list.
+Start reading at line <VAR>from</VAR> and end at <VAR>to</VAR>. If
+<VAR>from</VAR> is zero, start at the beginning. If <VAR>to</VAR> is less than
+<VAR>from</VAR>, then read until the end of the file. If <VAR>filename</VAR> is
+<CODE>NULL</CODE>, then read from <TT>`~/.history'</TT>. Returns 0 if successful,
+or <CODE>errno</CODE> if not.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>write_history</B> <I>(char *filename)</I>
+<DD><A NAME="IDX29"></A>
+Write the current history to <VAR>filename</VAR>, overwriting <VAR>filename</VAR>
+if necessary. If <VAR>filename</VAR> is
+<CODE>NULL</CODE>, then write the history list to <TT>`~/.history'</TT>. Values
+returned are as in <CODE>read_history ()</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>append_history</B> <I>(int nelements, char *filename)</I>
+<DD><A NAME="IDX30"></A>
+Append the last <VAR>nelements</VAR> of the history list to <VAR>filename</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_truncate_file</B> <I>(char *filename, int nlines)</I>
+<DD><A NAME="IDX31"></A>
+Truncate the history file <VAR>filename</VAR>, leaving only the last
+<VAR>nlines</VAR> lines.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC16" HREF="history.html#TOC16">History Expansion</A></H3>
+
+<P>
+These functions implement <CODE>csh</CODE>-like history expansion.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>history_expand</B> <I>(char *string, char **output)</I>
+<DD><A NAME="IDX32"></A>
+Expand <VAR>string</VAR>, placing the result into <VAR>output</VAR>, a pointer
+to a string (see section <A HREF="history.html#SEC2">History Expansion</A>). Returns:
+<DL COMPACT>
+
+<DT><CODE>0</CODE>
+<DD>
+If no expansions took place (or, if the only change in
+the text was the de-slashifying of the history expansion
+character);
+<DT><CODE>1</CODE>
+<DD>
+if expansions did take place;
+<DT><CODE>-1</CODE>
+<DD>
+if there was an error in expansion;
+<DT><CODE>2</CODE>
+<DD>
+if the returned line should only be displayed, but not executed,
+as with the <CODE>:p</CODE> modifier (see section <A HREF="history.html#SEC5">Modifiers</A>).
+</DL>
+
+<P>
+If an error ocurred in expansion, then <VAR>output</VAR> contains a descriptive
+error message.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>history_arg_extract</B> <I>(int first, int last, char *string)</I>
+<DD><A NAME="IDX33"></A>
+Extract a string segment consisting of the <VAR>first</VAR> through <VAR>last</VAR>
+arguments present in <VAR>string</VAR>. Arguments are broken up as in Bash.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>get_history_event</B> <I>(char *string, int *cindex, int qchar)</I>
+<DD><A NAME="IDX34"></A>
+Returns the text of the history event beginning at <VAR>string</VAR> +
+<VAR>*cindex</VAR>. <VAR>*cindex</VAR> is modified to point to after the event
+specifier. At function entry, <VAR>cindex</VAR> points to the index into
+<VAR>string</VAR> where the history event specification begins. <VAR>qchar</VAR>
+is a character that is allowed to end the event specification in addition
+to the "normal" terminating characters.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char ** <B>history_tokenize</B> <I>(char *string)</I>
+<DD><A NAME="IDX35"></A>
+Return an array of tokens parsed out of <VAR>string</VAR>, much as the
+shell might. The tokens are split on white space and on the
+characters <CODE>()<>;&|$</CODE>, and shell quoting conventions are
+obeyed.
+</DL>
+
+</P>
+
+
+<H2><A NAME="SEC17" HREF="history.html#TOC17">History Variables</A></H2>
+
+<P>
+This section describes the externally visible variables exported by
+the GNU History Library.
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>history_base</B>
+<DD><A NAME="IDX36"></A>
+The logical offset of the first entry in the history list.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>history_length</B>
+<DD><A NAME="IDX37"></A>
+The number of entries currently stored in the history list.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>max_input_history</B>
+<DD><A NAME="IDX38"></A>
+The maximum number of history entries. This must be changed using
+<CODE>stifle_history ()</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char <B>history_expansion_char</B>
+<DD><A NAME="IDX39"></A>
+The character that starts a history event. The default is <SAMP>`!'</SAMP>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char <B>history_subst_char</B>
+<DD><A NAME="IDX40"></A>
+The character that invokes word substitution if found at the start of
+a line. The default is <SAMP>`^'</SAMP>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char <B>history_comment_char</B>
+<DD><A NAME="IDX41"></A>
+During tokenization, if this character is seen as the first character
+of a word, then it and all subsequent characters up to a newline are
+ignored, suppressing history expansion for the remainder of the line.
+This is disabled by default.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>history_no_expand_chars</B>
+<DD><A NAME="IDX42"></A>
+The list of characters which inhibit history expansion if found immediately
+following <VAR>history_expansion_char</VAR>. The default is whitespace and
+<SAMP>`='</SAMP>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>history_search_delimiter_chars</B>
+<DD><A NAME="IDX43"></A>
+The list of additional characters which can delimit a history search
+string, in addition to whitespace, <SAMP>`:'</SAMP> and <SAMP>`?'</SAMP> in the case of
+a substring search. The default is empty.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>history_quotes_inhibit_expansion</B>
+<DD><A NAME="IDX44"></A>
+If non-zero, single-quoted words are not scanned for the history expansion
+character. The default value is 0.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>history_inhibit_expansion_function</B>
+<DD><A NAME="IDX45"></A>
+This should be set to the address of a function that takes two arguments:
+a <CODE>char *</CODE> (<VAR>string</VAR>) and an integer index into that string (<VAR>i</VAR>).
+It should return a non-zero value if the history expansion starting at
+<VAR>string[i]</VAR> should not be performed; zero if the expansion should
+be done.
+It is intended for use by applications like Bash that use the history
+expansion character for additional purposes.
+By default, this variable is set to NULL.
+</DL>
+
+</P>
+
+
+<H2><A NAME="SEC18" HREF="history.html#TOC18">History Programming Example</A></H2>
+
+<P>
+The following program demonstrates simple use of the GNU History Library.
+
+</P>
+
+<PRE>
+main ()
+{
+ char line[1024], *t;
+ int len, done = 0;
+
+ line[0] = 0;
+
+ using_history ();
+ while (!done)
+ {
+ printf ("history$ ");
+ fflush (stdout);
+ t = fgets (line, sizeof (line) - 1, stdin);
+ if (t && *t)
+ {
+ len = strlen (t);
+ if (t[len - 1] == '\n')
+ t[len - 1] = '\0';
+ }
+
+ if (!t)
+ strcpy (line, "quit");
+
+ if (line[0])
+ {
+ char *expansion;
+ int result;
+
+ result = history_expand (line, &expansion);
+ if (result)
+ fprintf (stderr, "%s\n", expansion);
+
+ if (result < 0 || result == 2)
+ {
+ free (expansion);
+ continue;
+ }
+
+ add_history (expansion);
+ strncpy (line, expansion, sizeof (line) - 1);
+ free (expansion);
+ }
+
+ if (strcmp (line, "quit") == 0)
+ done = 1;
+ else if (strcmp (line, "save") == 0)
+ write_history ("history_file");
+ else if (strcmp (line, "read") == 0)
+ read_history ("history_file");
+ else if (strcmp (line, "list") == 0)
+ {
+ register HIST_ENTRY **the_list;
+ register int i;
+
+ the_list = history_list ();
+ if (the_list)
+ for (i = 0; the_list[i]; i++)
+ printf ("%d: %s\n", i + history_base, the_list[i]->line);
+ }
+ else if (strncmp (line, "delete", 6) == 0)
+ {
+ int which;
+ if ((sscanf (line + 6, "%d", &which)) == 1)
+ {
+ HIST_ENTRY *entry = remove_history (which);
+ if (!entry)
+ fprintf (stderr, "No such entry %d\n", which);
+ else
+ {
+ free (entry->line);
+ free (entry);
+ }
+ }
+ else
+ {
+ fprintf (stderr, "non-numeric arg given to `delete'\n");
+ }
+ }
+ }
+}
+</PRE>
+
+
+
+<H1><A NAME="SEC19" HREF="history.html#TOC19">Concept Index</A></H1>
+<P>
+Jump to:
+<A HREF="#a">a</A>
+-
+<A HREF="#e">e</A>
+-
+<A HREF="#h">h</A>
+<P>
+<H2><A NAME="a">a</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX23">anchored search</A>
+</DIR>
+<H2><A NAME="e">e</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX2">event designators</A>
+</DIR>
+<H2><A NAME="h">h</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX3">history events</A>
+<LI><A HREF="history.html#IDX1">history expansion</A>
+<LI><A HREF="history.html#IDX22">History Searching</A>
+</DIR>
+
+</P>
+
+
+<H1><A NAME="SEC20" HREF="history.html#TOC20">Function and Variable Index</A></H1>
+<P>
+Jump to:
+<A HREF="#a">a</A>
+-
+<A HREF="#c">c</A>
+-
+<A HREF="#g">g</A>
+-
+<A HREF="#h">h</A>
+-
+<A HREF="#m">m</A>
+-
+<A HREF="#n">n</A>
+-
+<A HREF="#p">p</A>
+-
+<A HREF="#r">r</A>
+-
+<A HREF="#s">s</A>
+-
+<A HREF="#u">u</A>
+-
+<A HREF="#w">w</A>
+<P>
+<H2><A NAME="a">a</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX7">add_history</A>
+<LI><A HREF="history.html#IDX30">append_history</A>
+</DIR>
+<H2><A NAME="c">c</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX10">clear_history</A>
+<LI><A HREF="history.html#IDX16">current_history</A>
+</DIR>
+<H2><A NAME="g">g</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX34">get_history_event</A>
+</DIR>
+<H2><A NAME="h">h</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX33">history_arg_extract</A>
+<LI><A HREF="history.html#IDX36">history_base</A>
+<LI><A HREF="history.html#IDX41">history_comment_char</A>
+<LI><A HREF="history.html#IDX32">history_expand</A>
+<LI><A HREF="history.html#IDX39">history_expansion_char</A>
+<LI><A HREF="history.html#IDX17">history_get</A>
+<LI><A HREF="history.html#IDX5">history_get_history_state</A>
+<LI><A HREF="history.html#IDX45">history_inhibit_expansion_function</A>
+<LI><A HREF="history.html#IDX13">history_is_stifled</A>
+<LI><A HREF="history.html#IDX37">history_length</A>
+<LI><A HREF="history.html#IDX14">history_list</A>
+<LI><A HREF="history.html#IDX42">history_no_expand_chars</A>
+<LI><A HREF="history.html#IDX44">history_quotes_inhibit_expansion</A>
+<LI><A HREF="history.html#IDX24">history_search</A>
+<LI><A HREF="history.html#IDX43">history_search_delimiter_chars</A>
+<LI><A HREF="history.html#IDX26">history_search_pos</A>
+<LI><A HREF="history.html#IDX25">history_search_prefix</A>
+<LI><A HREF="history.html#IDX6">history_set_history_state</A>
+<LI><A HREF="history.html#IDX19">history_set_pos</A>
+<LI><A HREF="history.html#IDX40">history_subst_char</A>
+<LI><A HREF="history.html#IDX35">history_tokenize</A>
+<LI><A HREF="history.html#IDX18">history_total_bytes</A>
+<LI><A HREF="history.html#IDX31">history_truncate_file</A>
+</DIR>
+<H2><A NAME="m">m</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX38">max_input_history</A>
+</DIR>
+<H2><A NAME="n">n</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX21">next_history</A>
+</DIR>
+<H2><A NAME="p">p</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX20">previous_history</A>
+</DIR>
+<H2><A NAME="r">r</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX27">read_history</A>
+<LI><A HREF="history.html#IDX28">read_history_range</A>
+<LI><A HREF="history.html#IDX8">remove_history</A>
+<LI><A HREF="history.html#IDX9">replace_history_entry</A>
+</DIR>
+<H2><A NAME="s">s</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX11">stifle_history</A>
+</DIR>
+<H2><A NAME="u">u</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX12">unstifle_history</A>
+<LI><A HREF="history.html#IDX4">using_history</A>
+</DIR>
+<H2><A NAME="w">w</A></H2>
+<DIR>
+<LI><A HREF="history.html#IDX15">where_history</A>
+<LI><A HREF="history.html#IDX29">write_history</A>
+</DIR>
+
+</P>
+<P><HR><P>
+This document was generated on 31 December 1998 using the
+<A HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A>
+translator version 1.52.</P>
+</BODY>
+</HTML>
--- /dev/null
+This is Info file history.info, produced by Makeinfo version 1.67 from
+the input file /usr/homes/chet/src/bash/readline-src/doc/hist.texinfo.
+
+INFO-DIR-SECTION Libraries
+START-INFO-DIR-ENTRY
+* History: (history). The GNU history library API
+END-INFO-DIR-ENTRY
+
+ This document describes the GNU History library, a programming tool
+that provides a consistent user interface for recalling lines of
+previously typed input.
+
+ Copyright (C) 1988-1999 Free Software Foundation, Inc.
+
+ Permission is granted to make and distribute verbatim copies of this
+manual provided the copyright notice and this permission notice pare
+preserved on all copies.
+
+ Permission is granted to copy and distribute modified versions of
+this manual under the conditions for verbatim copying, provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+ Permission is granted to copy and distribute translations of this
+manual into another language, under the above conditions for modified
+versions, except that this permission notice may be stated in a
+translation approved by the Free Software Foundation.
+
+\1f
+File: history.info, Node: Top, Next: Using History Interactively, Up: (dir)
+
+GNU History Library
+*******************
+
+ This document describes the GNU History library, a programming tool
+that provides a consistent user interface for recalling lines of
+previously typed input.
+
+* Menu:
+
+* Using History Interactively:: GNU History User's Manual.
+* Programming with GNU History:: GNU History Programmer's Manual.
+* Concept Index:: Index of concepts described in this manual.
+* Function and Variable Index:: Index of externally visible functions
+ and variables.
+
+\1f
+File: history.info, Node: Using History Interactively, Next: Programming with GNU History, Prev: Top, Up: Top
+
+Using History Interactively
+***************************
+
+ This chapter describes how to use the GNU History Library
+interactively, from a user's standpoint. It should be considered a
+user's guide. For information on using the GNU History Library in your
+own programs, *note Programming with GNU History::..
+
+* Menu:
+
+* History Interaction:: What it feels like using History as a user.
+
+\1f
+File: history.info, Node: History Interaction, Up: Using History Interactively
+
+History Expansion
+=================
+
+ The History library provides a history expansion feature that is
+similar to the history expansion provided by `csh'. This section
+describes the syntax used to manipulate the history information.
+
+ 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.
+
+ History expansion takes place in two parts. The first is to
+determine which line from the history list should be used during
+substitution. The second is to select portions of that line for
+inclusion into the current one. The line selected from the history is
+called the "event", and the portions of that line that are acted upon
+are called "words". Various "modifiers" are available to manipulate
+the selected words. The line is broken into words in the same fashion
+that Bash does, so that several words surrounded by quotes are
+considered one word. History expansions are introduced by the
+appearance of the history expansion character, which is `!' by default.
+
+* Menu:
+
+* Event Designators:: How to specify which history line to use.
+* Word Designators:: Specifying which words are of interest.
+* Modifiers:: Modifying the results of substitution.
+
+\1f
+File: history.info, Node: Event Designators, Next: Word Designators, Up: History Interaction
+
+Event Designators
+-----------------
+
+ An event designator is a reference to a command line entry in the
+history list.
+
+`!'
+ Start a history substitution, except when followed by a space, tab,
+ the end of the line, `=' or `('.
+
+`!N'
+ Refer to command line N.
+
+`!-N'
+ Refer to the command N lines back.
+
+`!!'
+ Refer to the previous command. This is a synonym for `!-1'.
+
+`!STRING'
+ Refer to the most recent command starting with STRING.
+
+`!?STRING[?]'
+ Refer to the most recent command containing STRING. The trailing
+ `?' may be omitted if the STRING is followed immediately by a
+ newline.
+
+`^STRING1^STRING2^'
+ Quick Substitution. Repeat the last command, replacing STRING1
+ with STRING2. Equivalent to `!!:s/STRING1/STRING2/'.
+
+`!#'
+ The entire command line typed so far.
+
+\1f
+File: history.info, Node: Word Designators, Next: Modifiers, Prev: Event Designators, Up: History Interaction
+
+Word Designators
+----------------
+
+ Word designators are used to select desired words from the event. A
+`:' separates the event specification from the word designator. It may
+be omitted if the word designator begins with a `^', `$', `*', `-', or
+`%'. Words are numbered from the beginning of the line, with the first
+word being denoted by 0 (zero). Words are inserted into the current
+line separated by single spaces.
+
+`0 (zero)'
+ The `0'th word. For many applications, this is the command word.
+
+`N'
+ The Nth word.
+
+`^'
+ The first argument; that is, word 1.
+
+`$'
+ The last argument.
+
+`%'
+ The word matched by the most recent `?STRING?' search.
+
+`X-Y'
+ A range of words; `-Y' abbreviates `0-Y'.
+
+`*'
+ All of the words, except the `0'th. This is a synonym for `1-$'.
+ It is not an error to use `*' if there is just one word in the
+ event; the empty string is returned in that case.
+
+`X*'
+ Abbreviates `X-$'
+
+`X-'
+ Abbreviates `X-$' like `X*', but omits the last word.
+
+ If a word designator is supplied without an event specification, the
+previous command is used as the event.
+
+\1f
+File: history.info, Node: Modifiers, Prev: Word Designators, Up: History Interaction
+
+Modifiers
+---------
+
+ After the optional word designator, you can add a sequence of one or
+more of the following modifiers, each preceded by a `:'.
+
+`h'
+ Remove a trailing pathname component, leaving only the head.
+
+`t'
+ Remove all leading pathname components, leaving the tail.
+
+`r'
+ Remove a trailing suffix of the form `.SUFFIX', leaving the
+ basename.
+
+`e'
+ Remove all but the trailing suffix.
+
+`p'
+ Print the new command but do not execute it.
+
+`s/OLD/NEW/'
+ Substitute NEW for the first occurrence of OLD in the event line.
+ Any delimiter may be used in place of `/'. The delimiter may be
+ quoted in OLD and NEW with a single backslash. If `&' appears in
+ NEW, it is replaced by OLD. A single backslash will quote the
+ `&'. The final delimiter is optional if it is the last character
+ on the input line.
+
+`&'
+ Repeat the previous substitution.
+
+`g'
+ Cause changes to be applied over the entire event line. Used in
+ conjunction with `s', as in `gs/OLD/NEW/', or with `&'.
+
+\1f
+File: history.info, Node: Programming with GNU History, Next: Concept Index, Prev: Using History Interactively, Up: Top
+
+Programming with GNU History
+****************************
+
+ This chapter describes how to interface programs that you write with
+the GNU History Library. It should be considered a technical guide.
+For information on the interactive use of GNU History, *note Using
+History Interactively::..
+
+* Menu:
+
+* Introduction to History:: What is the GNU History library for?
+* History Storage:: How information is stored.
+* History Functions:: Functions that you can use.
+* History Variables:: Variables that control behaviour.
+* History Programming Example:: Example of using the GNU History Library.
+
+\1f
+File: history.info, Node: Introduction to History, Next: History Storage, Up: Programming with GNU History
+
+Introduction to History
+=======================
+
+ Many programs read input from the user a line at a time. The GNU
+History library is able to keep track of those lines, associate
+arbitrary data with each line, and utilize information from previous
+lines in composing new ones.
+
+ The programmer using the History library has available functions for
+remembering lines on a history list, associating arbitrary data with a
+line, removing lines from the list, searching through the list for a
+line containing an arbitrary text string, and referencing any line in
+the list directly. In addition, a history "expansion" function is
+available which provides for a consistent user interface across
+different programs.
+
+ The user using programs written with the History library has the
+benefit of a consistent user interface with a set of well-known
+commands for manipulating the text of previous lines and using that text
+in new commands. The basic history manipulation commands are similar to
+the history substitution provided by `csh'.
+
+ If the programmer desires, he can use the Readline library, which
+includes some history manipulation by default, and has the added
+advantage of command line editing.
+
+\1f
+File: history.info, Node: History Storage, Next: History Functions, Prev: Introduction to History, Up: Programming with GNU History
+
+History Storage
+===============
+
+ The history list is an array of history entries. A history entry is
+declared as follows:
+
+ typedef struct _hist_entry {
+ char *line;
+ char *data;
+ } HIST_ENTRY;
+
+ The history list itself might therefore be declared as
+
+ HIST_ENTRY **the_history_list;
+
+ The state of the History library is encapsulated into a single
+structure:
+
+ /* A structure used to pass the current state of the history stuff around. */
+ typedef struct _hist_state {
+ HIST_ENTRY **entries; /* Pointer to the entries themselves. */
+ int offset; /* The location pointer within this array. */
+ int length; /* Number of elements within this array. */
+ int size; /* Number of slots allocated to this array. */
+ int flags;
+ } HISTORY_STATE;
+
+ If the flags member includes `HS_STIFLED', the history has been
+stifled.
+
+\1f
+File: history.info, Node: History Functions, Next: History Variables, Prev: History Storage, Up: Programming with GNU History
+
+History Functions
+=================
+
+ This section describes the calling sequence for the various functions
+present in GNU History.
+
+* Menu:
+
+* Initializing History and State Management:: Functions to call when you
+ want to use history in a
+ program.
+* History List Management:: Functions used to manage the list
+ of history entries.
+* Information About the History List:: Functions returning information about
+ the history list.
+* Moving Around the History List:: Functions used to change the position
+ in the history list.
+* Searching the History List:: Functions to search the history list
+ for entries containing a string.
+* Managing the History File:: Functions that read and write a file
+ containing the history list.
+* History Expansion:: Functions to perform csh-like history
+ expansion.
+
+\1f
+File: history.info, Node: Initializing History and State Management, Next: History List Management, Up: History Functions
+
+Initializing History and State Management
+-----------------------------------------
+
+ This section describes functions used to initialize and manage the
+state of the History library when you want to use the history functions
+in your program.
+
+ - Function: void using_history ()
+ Begin a session in which the history functions might be used. This
+ initializes the interactive variables.
+
+ - Function: HISTORY_STATE * history_get_history_state ()
+ Return a structure describing the current state of the input
+ history.
+
+ - Function: void history_set_history_state (HISTORY_STATE *state)
+ Set the state of the history list according to STATE.
+
+\1f
+File: history.info, Node: History List Management, Next: Information About the History List, Prev: Initializing History and State Management, Up: History Functions
+
+History List Management
+-----------------------
+
+ These functions manage individual entries on the history list, or set
+parameters managing the list itself.
+
+ - Function: void add_history (char *string)
+ Place STRING at the end of the history list. The associated data
+ field (if any) is set to `NULL'.
+
+ - Function: HIST_ENTRY * remove_history (int which)
+ Remove history entry at offset WHICH from the history. The
+ removed element is returned so you can free the line, data, and
+ containing structure.
+
+ - Function: HIST_ENTRY * replace_history_entry (int which, char *line,
+ char *data)
+ Make the history entry at offset WHICH have LINE and DATA. This
+ returns the old entry so you can dispose of the data. In the case
+ of an invalid WHICH, a `NULL' pointer is returned.
+
+ - Function: void clear_history ()
+ Clear the history list by deleting all the entries.
+
+ - Function: void stifle_history (int max)
+ Stifle the history list, remembering only the last MAX entries.
+
+ - Function: int unstifle_history ()
+ Stop stifling the history. This returns the previous amount the
+ history was stifled. The value is positive if the history was
+ stifled, negative if it wasn't.
+
+ - Function: int history_is_stifled ()
+ Returns non-zero if the history is stifled, zero if it is not.
+
+\1f
+File: history.info, Node: Information About the History List, Next: Moving Around the History List, Prev: History List Management, Up: History Functions
+
+Information About the History List
+----------------------------------
+
+ These functions return information about the entire history list or
+individual list entries.
+
+ - Function: HIST_ENTRY ** history_list ()
+ Return a `NULL' terminated array of `HIST_ENTRY' which is the
+ current input history. Element 0 of this list is the beginning of
+ time. If there is no history, return `NULL'.
+
+ - Function: int where_history ()
+ Returns the offset of the current history element.
+
+ - Function: HIST_ENTRY * current_history ()
+ Return the history entry at the current position, as determined by
+ `where_history ()'. If there is no entry there, return a `NULL'
+ pointer.
+
+ - Function: HIST_ENTRY * history_get (int offset)
+ Return the history entry at position OFFSET, starting from
+ `history_base'. If there is no entry there, or if OFFSET is
+ greater than the history length, return a `NULL' pointer.
+
+ - Function: int history_total_bytes ()
+ Return the number of bytes that the primary history entries are
+ using. This function returns the sum of the lengths of all the
+ lines in the history.
+
+\1f
+File: history.info, Node: Moving Around the History List, Next: Searching the History List, Prev: Information About the History List, Up: History Functions
+
+Moving Around the History List
+------------------------------
+
+ These functions allow the current index into the history list to be
+set or changed.
+
+ - Function: int history_set_pos (int pos)
+ Set the position in the history list to POS, an absolute index
+ into the list.
+
+ - Function: HIST_ENTRY * previous_history ()
+ Back up the current history offset to the previous history entry,
+ and return a pointer to that entry. If there is no previous
+ entry, return a `NULL' pointer.
+
+ - Function: HIST_ENTRY * next_history ()
+ Move the current history offset forward to the next history entry,
+ and return the a pointer to that entry. If there is no next
+ entry, return a `NULL' pointer.
+
+\1f
+File: history.info, Node: Searching the History List, Next: Managing the History File, Prev: Moving Around the History List, Up: History Functions
+
+Searching the History List
+--------------------------
+
+ These functions allow searching of the history list for entries
+containing a specific string. Searching may be performed both forward
+and backward from the current history position. The search may be
+"anchored", meaning that the string must match at the beginning of the
+history entry.
+
+ - Function: int history_search (char *string, int direction)
+ Search the history for STRING, starting at the current history
+ offset. If DIRECTION < 0, then the search is through previous
+ entries, else through subsequent. If STRING is found, then the
+ current history index is set to that history entry, and the value
+ returned is the offset in the line of the entry where STRING was
+ found. Otherwise, nothing is changed, and a -1 is returned.
+
+ - Function: int history_search_prefix (char *string, int direction)
+ Search the history for STRING, starting at the current history
+ offset. The search is anchored: matching lines must begin with
+ STRING. If DIRECTION < 0, then the search is through previous
+ entries, else through subsequent. If STRING is found, then the
+ current history index is set to that entry, and the return value
+ is 0. Otherwise, nothing is changed, and a -1 is returned.
+
+ - Function: int history_search_pos (char *string, int direction, int
+ pos)
+ Search for STRING in the history list, starting at POS, an
+ absolute index into the list. If DIRECTION is negative, the search
+ proceeds backward from POS, otherwise forward. Returns the
+ absolute index of the history element where STRING was found, or
+ -1 otherwise.
+
+\1f
+File: history.info, Node: Managing the History File, Next: History Expansion, Prev: Searching the History List, Up: History Functions
+
+Managing the History File
+-------------------------
+
+ The History library can read the history from and write it to a file.
+This section documents the functions for managing a history file.
+
+ - Function: int read_history (char *filename)
+ Add the contents of FILENAME to the history list, a line at a
+ time. If FILENAME is `NULL', then read from `~/.history'.
+ Returns 0 if successful, or errno if not.
+
+ - Function: int read_history_range (char *filename, int from, int to)
+ Read a range of lines from FILENAME, adding them to the history
+ list. Start reading at line FROM and end at TO. If FROM is zero,
+ start at the beginning. If TO is less than FROM, then read until
+ the end of the file. If FILENAME is `NULL', then read from
+ `~/.history'. Returns 0 if successful, or `errno' if not.
+
+ - Function: int write_history (char *filename)
+ Write the current history to FILENAME, overwriting FILENAME if
+ necessary. If FILENAME is `NULL', then write the history list to
+ `~/.history'. Values returned are as in `read_history ()'.
+
+ - Function: int append_history (int nelements, char *filename)
+ Append the last NELEMENTS of the history list to FILENAME.
+
+ - Function: int history_truncate_file (char *filename, int nlines)
+ Truncate the history file FILENAME, leaving only the last NLINES
+ lines.
+
+\1f
+File: history.info, Node: History Expansion, Prev: Managing the History File, Up: History Functions
+
+History Expansion
+-----------------
+
+ These functions implement `csh'-like history expansion.
+
+ - Function: int history_expand (char *string, char **output)
+ Expand STRING, placing the result into OUTPUT, a pointer to a
+ string (*note History Interaction::.). Returns:
+ `0'
+ If no expansions took place (or, if the only change in the
+ text was the de-slashifying of the history expansion
+ character);
+
+ `1'
+ if expansions did take place;
+
+ `-1'
+ if there was an error in expansion;
+
+ `2'
+ if the returned line should only be displayed, but not
+ executed, as with the `:p' modifier (*note Modifiers::.).
+
+ If an error ocurred in expansion, then OUTPUT contains a
+ descriptive error message.
+
+ - Function: char * history_arg_extract (int first, int last, char
+ *string)
+ Extract a string segment consisting of the FIRST through LAST
+ arguments present in STRING. Arguments are broken up as in Bash.
+
+ - Function: char * get_history_event (char *string, int *cindex, int
+ qchar)
+ Returns the text of the history event beginning at STRING +
+ *CINDEX. *CINDEX is modified to point to after the event
+ specifier. At function entry, CINDEX points to the index into
+ STRING where the history event specification begins. QCHAR is a
+ character that is allowed to end the event specification in
+ addition to the "normal" terminating characters.
+
+ - Function: char ** history_tokenize (char *string)
+ Return an array of tokens parsed out of STRING, much as the shell
+ might. The tokens are split on white space and on the characters
+ `()<>;&|$', and shell quoting conventions are obeyed.
+
+\1f
+File: history.info, Node: History Variables, Next: History Programming Example, Prev: History Functions, Up: Programming with GNU History
+
+History Variables
+=================
+
+ This section describes the externally visible variables exported by
+the GNU History Library.
+
+ - Variable: int history_base
+ The logical offset of the first entry in the history list.
+
+ - Variable: int history_length
+ The number of entries currently stored in the history list.
+
+ - Variable: int max_input_history
+ The maximum number of history entries. This must be changed using
+ `stifle_history ()'.
+
+ - Variable: char history_expansion_char
+ The character that starts a history event. The default is `!'.
+
+ - Variable: char history_subst_char
+ The character that invokes word substitution if found at the start
+ of a line. The default is `^'.
+
+ - Variable: char history_comment_char
+ During tokenization, if this character is seen as the first
+ character of a word, then it and all subsequent characters up to a
+ newline are ignored, suppressing history expansion for the
+ remainder of the line. This is disabled by default.
+
+ - Variable: char * history_no_expand_chars
+ The list of characters which inhibit history expansion if found
+ immediately following HISTORY_EXPANSION_CHAR. The default is
+ whitespace and `='.
+
+ - Variable: char * history_search_delimiter_chars
+ The list of additional characters which can delimit a history
+ search string, in addition to whitespace, `:' and `?' in the case
+ of a substring search. The default is empty.
+
+ - Variable: int history_quotes_inhibit_expansion
+ If non-zero, single-quoted words are not scanned for the history
+ expansion character. The default value is 0.
+
+ - Variable: Function * history_inhibit_expansion_function
+ This should be set to the address of a function that takes two
+ arguments: a `char *' (STRING) and an integer index into that
+ string (I). It should return a non-zero value if the history
+ expansion starting at STRING[I] should not be performed; zero if
+ the expansion should be done. It is intended for use by
+ applications like Bash that use the history expansion character
+ for additional purposes. By default, this variable is set to NULL.
+
+\1f
+File: history.info, Node: History Programming Example, Prev: History Variables, Up: Programming with GNU History
+
+History Programming Example
+===========================
+
+ The following program demonstrates simple use of the GNU History
+Library.
+
+ main ()
+ {
+ char line[1024], *t;
+ int len, done = 0;
+
+ line[0] = 0;
+
+ using_history ();
+ while (!done)
+ {
+ printf ("history$ ");
+ fflush (stdout);
+ t = fgets (line, sizeof (line) - 1, stdin);
+ if (t && *t)
+ {
+ len = strlen (t);
+ if (t[len - 1] == '\n')
+ t[len - 1] = '\0';
+ }
+
+ if (!t)
+ strcpy (line, "quit");
+
+ if (line[0])
+ {
+ char *expansion;
+ int result;
+
+ result = history_expand (line, &expansion);
+ if (result)
+ fprintf (stderr, "%s\n", expansion);
+
+ if (result < 0 || result == 2)
+ {
+ free (expansion);
+ continue;
+ }
+
+ add_history (expansion);
+ strncpy (line, expansion, sizeof (line) - 1);
+ free (expansion);
+ }
+
+ if (strcmp (line, "quit") == 0)
+ done = 1;
+ else if (strcmp (line, "save") == 0)
+ write_history ("history_file");
+ else if (strcmp (line, "read") == 0)
+ read_history ("history_file");
+ else if (strcmp (line, "list") == 0)
+ {
+ register HIST_ENTRY **the_list;
+ register int i;
+
+ the_list = history_list ();
+ if (the_list)
+ for (i = 0; the_list[i]; i++)
+ printf ("%d: %s\n", i + history_base, the_list[i]->line);
+ }
+ else if (strncmp (line, "delete", 6) == 0)
+ {
+ int which;
+ if ((sscanf (line + 6, "%d", &which)) == 1)
+ {
+ HIST_ENTRY *entry = remove_history (which);
+ if (!entry)
+ fprintf (stderr, "No such entry %d\n", which);
+ else
+ {
+ free (entry->line);
+ free (entry);
+ }
+ }
+ else
+ {
+ fprintf (stderr, "non-numeric arg given to `delete'\n");
+ }
+ }
+ }
+ }
+
+\1f
+File: history.info, Node: Concept Index, Next: Function and Variable Index, Prev: Programming with GNU History, Up: Top
+
+Concept Index
+*************
+
+* Menu:
+
+* anchored search: Searching the History List.
+* event designators: Event Designators.
+* history events: Event Designators.
+* history expansion: History Interaction.
+* History Searching: Searching the History List.
+
+\1f
+File: history.info, Node: Function and Variable Index, Prev: Concept Index, Up: Top
+
+Function and Variable Index
+***************************
+
+* Menu:
+
+* add_history: History List Management.
+* append_history: Managing the History File.
+* clear_history: History List Management.
+* current_history: Information About the History List.
+* get_history_event: History Expansion.
+* history_arg_extract: History Expansion.
+* history_base: History Variables.
+* history_comment_char: History Variables.
+* history_expand: History Expansion.
+* history_expansion_char: History Variables.
+* history_get: Information About the History List.
+* history_get_history_state: Initializing History and State Management.
+* history_inhibit_expansion_function: History Variables.
+* history_is_stifled: History List Management.
+* history_length: History Variables.
+* history_list: Information About the History List.
+* history_no_expand_chars: History Variables.
+* history_quotes_inhibit_expansion: History Variables.
+* history_search: Searching the History List.
+* history_search_delimiter_chars: History Variables.
+* history_search_pos: Searching the History List.
+* history_search_prefix: Searching the History List.
+* history_set_history_state: Initializing History and State Management.
+* history_set_pos: Moving Around the History List.
+* history_subst_char: History Variables.
+* history_tokenize: History Expansion.
+* history_total_bytes: Information About the History List.
+* history_truncate_file: Managing the History File.
+* max_input_history: History Variables.
+* next_history: Moving Around the History List.
+* previous_history: Moving Around the History List.
+* read_history: Managing the History File.
+* read_history_range: Managing the History File.
+* remove_history: History List Management.
+* replace_history_entry: History List Management.
+* stifle_history: History List Management.
+* unstifle_history: History List Management.
+* using_history: Initializing History and State Management.
+* where_history: Information About the History List.
+* write_history: Managing the History File.
+
+
+\1f
+Tag Table:
+Node: Top\7f1162
+Node: Using History Interactively\7f1742
+Node: History Interaction\7f2250
+Node: Event Designators\7f3669
+Node: Word Designators\7f4596
+Node: Modifiers\7f5845
+Node: Programming with GNU History\7f6983
+Node: Introduction to History\7f7709
+Node: History Storage\7f9030
+Node: History Functions\7f10123
+Node: Initializing History and State Management\7f11094
+Node: History List Management\7f11886
+Node: Information About the History List\7f13407
+Node: Moving Around the History List\7f14713
+Node: Searching the History List\7f15598
+Node: Managing the History File\7f17430
+Node: History Expansion\7f18936
+Node: History Variables\7f20780
+Node: History Programming Example\7f23098
+Node: Concept Index\7f25702
+Node: Function and Variable Index\7f26188
+\1f
+End Tag Table
--- /dev/null
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+1306 1303 V 11 w(entry)5 b Fd(.)t(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
+(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)18
+b Fe(4)1012 1406 y Fm(S)1012 1464 y Fc(stifle)p 1134
+1464 V 12 w(history)8 b Fd(.)e(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g
+(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
+g(.)g(.)g(.)24 b Fe(4)1012 1568 y Fm(U)1012 1626 y Fc(unstifle)p
+1174 1626 V 11 w(history)8 b Fd(.)t(.)e(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h
+(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)
+g(.)g(.)21 b Fe(4)1012 1676 y Fc(using)p 1114 1676 V
+13 w(history)s Fd(.)s(.)6 b(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
+(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
+g(.)g(.)g(.)17 b Fe(4)1012 1779 y Fm(W)1012 1837 y Fc(where)p
+1114 1837 V 13 w(history)s Fd(.)s(.)6 b(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g
+(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
+g(.)g(.)g(.)g(.)g(.)g(.)17 b Fe(5)1012 1887 y Fc(write)p
+1114 1887 V 13 w(history)s Fd(.)s(.)6 b(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g
+(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
+g(.)g(.)g(.)g(.)g(.)g(.)17 b Fe(6)p eop
+%%Page: 14 16
+14 15 bop 75 -58 a Fo(14)1324 b(GNU)15 b(History)g(Library)p
+eop
+%%Page: -1 17
+-1 16 bop 1862 -58 a Fo(i)75 183 y Fk(T)-7 b(able)27
+b(of)f(Con)n(ten)n(ts)75 354 y Fm(1)67 b(Using)22 b(History)h(In)n
+(teractiv)n(ely)9 b Fb(.)k(.)d(.)h(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h
+(.)f(.)g(.)g(.)h(.)31 b Fm(1)224 423 y Fo(1.1)45 b(History)15
+b(Expansion)5 b Fa(.)j(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)19 b Fo(1)374 478 y(1.1.1)44
+b(Ev)o(en)o(t)14 b(Designators)e Fa(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)26 b Fo(1)374 532 y(1.1.2)44 b(W)l(ord)15
+b(Designators)5 b Fa(.)h(.)i(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)19 b Fo(2)374 587 y(1.1.3)44 b(Mo)q(di\014ers)t Fa(.)8
+b(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)19 b Fo(2)75 708 y Fm(2)67 b(Programming)23
+b(with)g(GNU)f(History)16 b Fb(.)10 b(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f
+(.)g(.)38 b Fm(3)224 777 y Fo(2.1)45 b(In)o(tro)q(duction)16
+b(to)f(History)10 b Fa(.)d(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)24 b Fo(3)224 832 y(2.2)45 b(History)15
+b(Storage)c Fa(.)d(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)26 b Fo(3)224 886
+y(2.3)45 b(History)15 b(F)l(unctions)d Fa(.)c(.)f(.)h(.)f(.)h(.)f(.)h
+(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)26
+b Fo(4)374 941 y(2.3.1)44 b(Initializing)18 b(History)d(and)h(State)e
+(Managemen)o(t)g Fa(.)7 b(.)h(.)g(.)f(.)h(.)f(.)29 b
+Fo(4)374 996 y(2.3.2)44 b(History)15 b(List)h(Managemen)o(t)d
+Fa(.)7 b(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)29 b Fo(4)374 1051 y(2.3.3)44
+b(Information)15 b(Ab)q(out)g(the)h(History)f(List)c
+Fa(.)d(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)26
+b Fo(5)374 1106 y(2.3.4)44 b(Mo)o(ving)15 b(Around)g(the)g(History)g
+(List)c Fa(.)d(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)25 b Fo(5)374 1160 y(2.3.5)44 b(Searc)o(hing)16
+b(the)f(History)g(List)7 b Fa(.)h(.)g(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)22
+b Fo(5)374 1215 y(2.3.6)44 b(Managing)15 b(the)g(History)g(File)6
+b Fa(.)i(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)20 b Fo(6)374 1270 y(2.3.7)44
+b(History)15 b(Expansion)9 b Fa(.)f(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)24 b Fo(6)224 1325 y(2.4)45 b(History)15 b(V)l(ariables)6
+b Fa(.)j(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)21 b Fo(7)224 1380 y(2.5)45 b(History)15
+b(Programming)f(Example)7 b Fa(.)i(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)22
+b Fo(8)75 1501 y Fm(App)r(endix)i(A)67 b(Concept)22 b(Index)17
+b Fb(.)10 b(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)g
+(.)38 b Fm(11)75 1636 y(App)r(endix)24 b(B)67 b(F)-6
+b(unction)25 b(and)e(V)-6 b(ariable)24 b(Index)16 b Fb(.)10
+b(.)g(.)g(.)38 b Fm(13)p eop
+%%Page: -2 18
+-2 17 bop 75 -58 a Fo(ii)1346 b(GNU)15 b(History)g(Library)p
+eop
+%%Trailer
+end
+userdict /end-hook known{end-hook}if
+%%EOF
@table @code
@item fc
-@comment btindex fc
+@btindex fc
@example
@code{fc [-e @var{ename}] [-nlr] [@var{first}] [@var{last}]}
@code{fc -s [@var{pat}=@var{rep}] [@var{command}]}
and typing @samp{r} re-executes the last command (@pxref{Aliases}).
@item history
-@comment btindex history
+@btindex history
@example
history [-c] [@var{n}]
history [-anrw] [@var{filename}]
--- /dev/null
+<HTML>
+<HEAD>
+<!-- This HTML file has been created by texi2html 1.52
+ from /usr/homes/chet/src/bash/readline-src/doc/rlman.texinfo on 31 December 1998 -->
+
+<TITLE>GNU Readline Library</TITLE>
+</HEAD>
+<BODY>
+<H1>GNU Readline Library</H1>
+<H2>Edition 4.0, for <CODE>Readline Library</CODE> Version 4.0.</H2>
+<H2>December 1998</H2>
+<ADDRESS>Brian Fox, Free Software Foundation</ADDRESS>
+<ADDRESS>Chet Ramey, Case Western Reserve University</ADDRESS>
+<P>
+<P><HR><P>
+<H1>Table of Contents</H1>
+<UL>
+<LI><A NAME="TOC1" HREF="readline.html#SEC1">Command Line Editing</A>
+<UL>
+<LI><A NAME="TOC2" HREF="readline.html#SEC2">Introduction to Line Editing</A>
+<LI><A NAME="TOC3" HREF="readline.html#SEC3">Readline Interaction</A>
+<UL>
+<LI><A NAME="TOC4" HREF="readline.html#SEC4">Readline Bare Essentials</A>
+<LI><A NAME="TOC5" HREF="readline.html#SEC5">Readline Movement Commands</A>
+<LI><A NAME="TOC6" HREF="readline.html#SEC6">Readline Killing Commands</A>
+<LI><A NAME="TOC7" HREF="readline.html#SEC7">Readline Arguments</A>
+<LI><A NAME="TOC8" HREF="readline.html#SEC8">Searching for Commands in the History</A>
+</UL>
+<LI><A NAME="TOC9" HREF="readline.html#SEC9">Readline Init File</A>
+<UL>
+<LI><A NAME="TOC10" HREF="readline.html#SEC10">Readline Init File Syntax</A>
+<LI><A NAME="TOC11" HREF="readline.html#SEC11">Conditional Init Constructs</A>
+<LI><A NAME="TOC12" HREF="readline.html#SEC12">Sample Init File</A>
+</UL>
+<LI><A NAME="TOC13" HREF="readline.html#SEC13">Bindable Readline Commands</A>
+<UL>
+<LI><A NAME="TOC14" HREF="readline.html#SEC14">Commands For Moving</A>
+<LI><A NAME="TOC15" HREF="readline.html#SEC15">Commands For Manipulating The History</A>
+<LI><A NAME="TOC16" HREF="readline.html#SEC16">Commands For Changing Text</A>
+<LI><A NAME="TOC17" HREF="readline.html#SEC17">Killing And Yanking</A>
+<LI><A NAME="TOC18" HREF="readline.html#SEC18">Specifying Numeric Arguments</A>
+<LI><A NAME="TOC19" HREF="readline.html#SEC19">Letting Readline Type For You</A>
+<LI><A NAME="TOC20" HREF="readline.html#SEC20">Keyboard Macros</A>
+<LI><A NAME="TOC21" HREF="readline.html#SEC21">Some Miscellaneous Commands</A>
+</UL>
+<LI><A NAME="TOC22" HREF="readline.html#SEC22">Readline vi Mode</A>
+</UL>
+<LI><A NAME="TOC23" HREF="readline.html#SEC23">Programming with GNU Readline</A>
+<UL>
+<LI><A NAME="TOC24" HREF="readline.html#SEC24">Basic Behavior</A>
+<LI><A NAME="TOC25" HREF="readline.html#SEC25">Custom Functions</A>
+<UL>
+<LI><A NAME="TOC26" HREF="readline.html#SEC26">The Function Type</A>
+<LI><A NAME="TOC27" HREF="readline.html#SEC27">Writing a New Function</A>
+</UL>
+<LI><A NAME="TOC28" HREF="readline.html#SEC28">Readline Variables</A>
+<LI><A NAME="TOC29" HREF="readline.html#SEC29">Readline Convenience Functions</A>
+<UL>
+<LI><A NAME="TOC30" HREF="readline.html#SEC30">Naming a Function</A>
+<LI><A NAME="TOC31" HREF="readline.html#SEC31">Selecting a Keymap</A>
+<LI><A NAME="TOC32" HREF="readline.html#SEC32">Binding Keys</A>
+<LI><A NAME="TOC33" HREF="readline.html#SEC33">Associating Function Names and Bindings</A>
+<LI><A NAME="TOC34" HREF="readline.html#SEC34">Allowing Undoing</A>
+<LI><A NAME="TOC35" HREF="readline.html#SEC35">Redisplay</A>
+<LI><A NAME="TOC36" HREF="readline.html#SEC36">Modifying Text</A>
+<LI><A NAME="TOC37" HREF="readline.html#SEC37">Utility Functions</A>
+<LI><A NAME="TOC38" HREF="readline.html#SEC38">Alternate Interface</A>
+<LI><A NAME="TOC39" HREF="readline.html#SEC39">An Example</A>
+</UL>
+<LI><A NAME="TOC40" HREF="readline.html#SEC40">Readline Signal Handling</A>
+<LI><A NAME="TOC41" HREF="readline.html#SEC41">Custom Completers</A>
+<UL>
+<LI><A NAME="TOC42" HREF="readline.html#SEC42">How Completing Works</A>
+<LI><A NAME="TOC43" HREF="readline.html#SEC43">Completion Functions</A>
+<LI><A NAME="TOC44" HREF="readline.html#SEC44">Completion Variables</A>
+<LI><A NAME="TOC45" HREF="readline.html#SEC45">A Short Completion Example</A>
+</UL>
+</UL>
+<LI><A NAME="TOC46" HREF="readline.html#SEC46">Concept Index</A>
+<LI><A NAME="TOC47" HREF="readline.html#SEC47">Function and Variable Index</A>
+</UL>
+<P><HR><P>
+
+<P>
+This document describes the GNU Readline Library, a utility which aids
+in the consistency of user interface across discrete programs that need
+to provide a command line interface.
+
+</P>
+<P>
+Published by the Free Software Foundation <BR>
+675 Massachusetts Avenue, <BR>
+Cambridge, MA 02139 USA
+
+</P>
+<P>
+Permission is granted to make and distribute verbatim copies of
+this manual provided the copyright notice and this permission notice
+are preserved on all copies.
+
+</P>
+<P>
+Permission is granted to copy and distribute modified versions of this
+manual under the conditions for verbatim copying, provided that the entire
+resulting derived work is distributed under the terms of a permission
+notice identical to this one.
+
+</P>
+<P>
+Permission is granted to copy and distribute translations of this manual
+into another language, under the above conditions for modified versions,
+except that this permission notice may be stated in a translation approved
+by the Free Software Foundation.
+
+</P>
+<P>
+Copyright (C) 1988-1999 Free Software Foundation, Inc.
+
+</P>
+
+
+
+<H1><A NAME="SEC1" HREF="readline.html#TOC1">Command Line Editing</A></H1>
+
+<P>
+This chapter describes the basic features of the GNU
+command line editing interface.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC2">Introduction and Notation</A>: Notation used in this text.
+<LI><A HREF="readline.html#SEC3">Readline Interaction</A>: The minimum set of commands for editing a line.
+<LI><A HREF="readline.html#SEC9">Readline Init File</A>: Customizing Readline from a user's view.
+<LI><A HREF="readline.html#SEC13">Bindable Readline Commands</A>: A description of most of the Readline commands
+ available for binding
+<LI><A HREF="readline.html#SEC22">Readline vi Mode</A>: A short description of how to make Readline
+ behave like the vi editor.
+</UL>
+
+
+
+<H2><A NAME="SEC2" HREF="readline.html#TOC2">Introduction to Line Editing</A></H2>
+
+<P>
+The following paragraphs describe the notation used to represent
+keystrokes.
+
+</P>
+<P>
+The text <KBD>C-k</KBD> is read as `Control-K' and describes the character
+produced when the <KBD>k</KBD> key is pressed while the Control key
+is depressed.
+
+</P>
+<P>
+The text <KBD>M-k</KBD> is read as `Meta-K' and describes the character
+produced when the meta key (if you have one) is depressed, and the <KBD>k</KBD>
+key is pressed. If you do not have a meta key, the identical keystroke
+can be generated by typing <KBD>ESC</KBD> <I>first</I>, and then typing <KBD>k</KBD>.
+Either process is known as <EM>metafying</EM> the <KBD>k</KBD> key.
+
+</P>
+<P>
+The text <KBD>M-C-k</KBD> is read as `Meta-Control-k' and describes the
+character produced by <EM>metafying</EM> <KBD>C-k</KBD>.
+
+</P>
+<P>
+In addition, several keys have their own names. Specifically,
+<KBD>DEL</KBD>, <KBD>ESC</KBD>, <KBD>LFD</KBD>, <KBD>SPC</KBD>, <KBD>RET</KBD>, and <KBD>TAB</KBD> all
+stand for themselves when seen in this text, or in an init file
+(see section <A HREF="readline.html#SEC9">Readline Init File</A>).
+
+</P>
+
+
+<H2><A NAME="SEC3" HREF="readline.html#TOC3">Readline Interaction</A></H2>
+<P>
+<A NAME="IDX1"></A>
+
+</P>
+<P>
+Often during an interactive session you type in a long line of text,
+only to notice that the first word on the line is misspelled. The
+Readline library gives you a set of commands for manipulating the text
+as you type it in, allowing you to just fix your typo, and not forcing
+you to retype the majority of the line. Using these editing commands,
+you move the cursor to the place that needs correction, and delete or
+insert the text of the corrections. Then, when you are satisfied with
+the line, you simply press <KBD>RETURN</KBD>. You do not have to be at the
+end of the line to press <KBD>RETURN</KBD>; the entire line is accepted
+regardless of the location of the cursor within the line.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC4">Readline Bare Essentials</A>: The least you need to know about Readline.
+<LI><A HREF="readline.html#SEC5">Readline Movement Commands</A>: Moving about the input line.
+<LI><A HREF="readline.html#SEC6">Readline Killing Commands</A>: How to delete text, and how to get it back!
+<LI><A HREF="readline.html#SEC7">Readline Arguments</A>: Giving numeric arguments to commands.
+<LI><A HREF="readline.html#SEC8">Searching</A>: Searching through previous lines.
+</UL>
+
+
+
+<H3><A NAME="SEC4" HREF="readline.html#TOC4">Readline Bare Essentials</A></H3>
+<P>
+<A NAME="IDX2"></A>
+<A NAME="IDX3"></A>
+<A NAME="IDX4"></A>
+
+</P>
+<P>
+In order to enter characters into the line, simply type them. The typed
+character appears where the cursor was, and then the cursor moves one
+space to the right. If you mistype a character, you can use your
+erase character to back up and delete the mistyped character.
+
+</P>
+<P>
+Sometimes you may miss typing a character that you wanted to type, and
+not notice your error until you have typed several other characters. In
+that case, you can type <KBD>C-b</KBD> to move the cursor to the left, and then
+correct your mistake. Afterwards, you can move the cursor to the right
+with <KBD>C-f</KBD>.
+
+</P>
+<P>
+When you add text in the middle of a line, you will notice that characters
+to the right of the cursor are `pushed over' to make room for the text
+that you have inserted. Likewise, when you delete text behind the cursor,
+characters to the right of the cursor are `pulled back' to fill in the
+blank space created by the removal of the text. A list of the basic bare
+essentials for editing the text of an input line follows.
+
+</P>
+<DL COMPACT>
+
+<DT><KBD>C-b</KBD>
+<DD>
+Move back one character.
+<DT><KBD>C-f</KBD>
+<DD>
+Move forward one character.
+<DT><KBD>DEL</KBD>
+<DD>
+Delete the character to the left of the cursor.
+<DT><KBD>C-d</KBD>
+<DD>
+Delete the character underneath the cursor.
+<DT>Printing characters
+<DD>
+Insert the character into the line at the cursor.
+<DT><KBD>C-_</KBD>
+<DD>
+Undo the last editing command. You can undo all the way back to an
+empty line.
+</DL>
+
+
+
+<H3><A NAME="SEC5" HREF="readline.html#TOC5">Readline Movement Commands</A></H3>
+
+<P>
+The above table describes the most basic possible keystrokes that you need
+in order to do editing of the input line. For your convenience, many
+other commands have been added in addition to <KBD>C-b</KBD>, <KBD>C-f</KBD>,
+<KBD>C-d</KBD>, and <KBD>DEL</KBD>. Here are some commands for moving more rapidly
+about the line.
+
+</P>
+<DL COMPACT>
+
+<DT><KBD>C-a</KBD>
+<DD>
+Move to the start of the line.
+<DT><KBD>C-e</KBD>
+<DD>
+Move to the end of the line.
+<DT><KBD>M-f</KBD>
+<DD>
+Move forward a word, where a word is composed of letters and digits.
+<DT><KBD>M-b</KBD>
+<DD>
+Move backward a word.
+<DT><KBD>C-l</KBD>
+<DD>
+Clear the screen, reprinting the current line at the top.
+</DL>
+
+<P>
+Notice how <KBD>C-f</KBD> moves forward a character, while <KBD>M-f</KBD> moves
+forward a word. It is a loose convention that control keystrokes
+operate on characters while meta keystrokes operate on words.
+
+</P>
+
+
+<H3><A NAME="SEC6" HREF="readline.html#TOC6">Readline Killing Commands</A></H3>
+
+<P>
+<A NAME="IDX5"></A>
+<A NAME="IDX6"></A>
+
+</P>
+<P>
+<EM>Killing</EM> text means to delete the text from the line, but to save
+it away for later use, usually by <EM>yanking</EM> (re-inserting)
+it back into the line.
+If the description for a command says that it `kills' text, then you can
+be sure that you can get the text back in a different (or the same)
+place later.
+
+</P>
+<P>
+When you use a kill command, the text is saved in a <EM>kill-ring</EM>.
+Any number of consecutive kills save all of the killed text together, so
+that when you yank it back, you get it all. The kill
+ring is not line specific; the text that you killed on a previously
+typed line is available to be yanked back later, when you are typing
+another line.
+<A NAME="IDX7"></A>
+
+</P>
+<P>
+Here is the list of commands for killing text.
+
+</P>
+<DL COMPACT>
+
+<DT><KBD>C-k</KBD>
+<DD>
+Kill the text from the current cursor position to the end of the line.
+
+<DT><KBD>M-d</KBD>
+<DD>
+Kill from the cursor to the end of the current word, or if between
+words, to the end of the next word.
+
+<DT><KBD>M-DEL</KBD>
+<DD>
+Kill from the cursor the start of the previous word, or if between
+words, to the start of the previous word.
+
+<DT><KBD>C-w</KBD>
+<DD>
+Kill from the cursor to the previous whitespace. This is different than
+<KBD>M-DEL</KBD> because the word boundaries differ.
+
+</DL>
+
+<P>
+Here is how to <EM>yank</EM> the text back into the line. Yanking
+means to copy the most-recently-killed text from the kill buffer.
+
+</P>
+<DL COMPACT>
+
+<DT><KBD>C-y</KBD>
+<DD>
+Yank the most recently killed text back into the buffer at the cursor.
+
+<DT><KBD>M-y</KBD>
+<DD>
+Rotate the kill-ring, and yank the new top. You can only do this if
+the prior command is <KBD>C-y</KBD> or <KBD>M-y</KBD>.
+</DL>
+
+
+
+<H3><A NAME="SEC7" HREF="readline.html#TOC7">Readline Arguments</A></H3>
+
+<P>
+You can pass numeric arguments to Readline commands. Sometimes the
+argument acts as a repeat count, other times it is the <I>sign</I> of the
+argument that is significant. If you pass a negative argument to a
+command which normally acts in a forward direction, that command will
+act in a backward direction. For example, to kill text back to the
+start of the line, you might type <SAMP>`M-- C-k'</SAMP>.
+
+</P>
+<P>
+The general way to pass numeric arguments to a command is to type meta
+digits before the command. If the first `digit' typed is a minus
+sign (<KBD>-</KBD>), then the sign of the argument will be negative. Once
+you have typed one meta digit to get the argument started, you can type
+the remainder of the digits, and then the command. For example, to give
+the <KBD>C-d</KBD> command an argument of 10, you could type <SAMP>`M-1 0 C-d'</SAMP>.
+
+</P>
+
+
+<H3><A NAME="SEC8" HREF="readline.html#TOC8">Searching for Commands in the History</A></H3>
+
+<P>
+Readline provides commands for searching through the command history
+for lines containing a specified string.
+There are two search modes: <VAR>incremental</VAR> and <VAR>non-incremental</VAR>.
+
+</P>
+<P>
+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 <VAR>isearch-terminators</VAR> variable
+are used to terminate an incremental search.
+If that variable has not been assigned a value, the <KBD>ESC</KBD> and
+<KBD>C-J</KBD> characters will terminate an incremental search.
+<KBD>C-g</KBD> 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.
+To find other matching entries in the history list, type <KBD>C-s</KBD> or
+<KBD>C-r</KBD> 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 <KBD>RET</KBD> will terminate the search and accept
+the line, thereby executing the command from the history list.
+
+</P>
+<P>
+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.
+
+</P>
+
+
+<H2><A NAME="SEC9" HREF="readline.html#TOC9">Readline Init File</A></H2>
+<P>
+<A NAME="IDX8"></A>
+
+</P>
+<P>
+Although the Readline library comes with a set of <CODE>emacs</CODE>-like
+keybindings installed by default, it is possible to use a different set
+of keybindings.
+Any user can customize programs that use Readline by putting
+commands in an <EM>inputrc</EM> file in his home directory.
+The name of this
+file is taken from the value of the environment variable <CODE>INPUTRC</CODE>. If
+that variable is unset, the default is <TT>`~/.inputrc'</TT>.
+
+</P>
+<P>
+When a program which uses the Readline library starts up, the
+init file is read, and the key bindings are set.
+
+</P>
+<P>
+In addition, the <CODE>C-x C-r</CODE> command re-reads this init file, thus
+incorporating any changes that you might have made to it.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC10">Readline Init File Syntax</A>: Syntax for the commands in the inputrc file.
+
+<LI><A HREF="readline.html#SEC11">Conditional Init Constructs</A>: Conditional key bindings in the inputrc file.
+
+<LI><A HREF="readline.html#SEC12">Sample Init File</A>: An example inputrc file.
+</UL>
+
+
+
+<H3><A NAME="SEC10" HREF="readline.html#TOC10">Readline Init File Syntax</A></H3>
+
+<P>
+There are only a few basic constructs allowed in the
+Readline init file. Blank lines are ignored.
+Lines beginning with a <SAMP>`#'</SAMP> are comments.
+Lines beginning with a <SAMP>`$'</SAMP> indicate conditional
+constructs (see section <A HREF="readline.html#SEC11">Conditional Init Constructs</A>). Other lines
+denote variable settings and key bindings.
+
+</P>
+<DL COMPACT>
+
+<DT>Variable Settings
+<DD>
+You can modify the run-time behavior of Readline by
+altering the values of variables in Readline
+using the <CODE>set</CODE> command within the init file. Here is how to
+change from the default Emacs-like key binding to use
+<CODE>vi</CODE> line editing commands:
+
+
+<PRE>
+set editing-mode vi
+</PRE>
+
+A great deal of run-time behavior is changeable with the following
+variables.
+
+<DL COMPACT>
+
+<DT><CODE>bell-style</CODE>
+<DD>
+<A NAME="IDX9"></A>
+Controls what happens when Readline wants to ring the terminal bell.
+If set to <SAMP>`none'</SAMP>, Readline never rings the bell. If set to
+<SAMP>`visible'</SAMP>, Readline uses a visible bell if one is available.
+If set to <SAMP>`audible'</SAMP> (the default), Readline attempts to ring
+the terminal's bell.
+
+<DT><CODE>comment-begin</CODE>
+<DD>
+<A NAME="IDX10"></A>
+The string to insert at the beginning of the line when the
+<CODE>insert-comment</CODE> command is executed. The default value
+is <CODE>"#"</CODE>.
+
+<DT><CODE>completion-ignore-case</CODE>
+<DD>
+If set to <SAMP>`on'</SAMP>, Readline performs filename matching and completion
+in a case-insensitive fashion.
+The default value is <SAMP>`off'</SAMP>.
+
+<DT><CODE>completion-query-items</CODE>
+<DD>
+<A NAME="IDX11"></A>
+The number of possible completions that determines when the user is
+asked whether he wants to see the list of possibilities. If the
+number of possible completions is greater than this value,
+Readline will ask the user whether or not he wishes to view
+them; otherwise, they are simply listed. The default limit is
+<CODE>100</CODE>.
+
+<DT><CODE>convert-meta</CODE>
+<DD>
+<A NAME="IDX12"></A>
+If set to <SAMP>`on'</SAMP>, Readline will convert characters with the
+eighth bit set to an ASCII key sequence by stripping the eighth
+bit and prepending an <KBD>ESC</KBD> character, converting them to a
+meta-prefixed key sequence. The default value is <SAMP>`on'</SAMP>.
+
+<DT><CODE>disable-completion</CODE>
+<DD>
+<A NAME="IDX13"></A>
+If set to <SAMP>`On'</SAMP>, Readline will inhibit word completion.
+Completion characters will be inserted into the line as if they had
+been mapped to <CODE>self-insert</CODE>. The default is <SAMP>`off'</SAMP>.
+
+<DT><CODE>editing-mode</CODE>
+<DD>
+<A NAME="IDX14"></A>
+The <CODE>editing-mode</CODE> variable controls which default set of
+key bindings is used. By default, Readline starts up in Emacs editing
+mode, where the keystrokes are most similar to Emacs. This variable can be
+set to either <SAMP>`emacs'</SAMP> or <SAMP>`vi'</SAMP>.
+
+<DT><CODE>enable-keypad</CODE>
+<DD>
+<A NAME="IDX15"></A>
+When set to <SAMP>`on'</SAMP>, Readline will try to enable the application
+keypad when it is called. Some systems need this to enable the
+arrow keys. The default is <SAMP>`off'</SAMP>.
+
+<DT><CODE>expand-tilde</CODE>
+<DD>
+<A NAME="IDX16"></A>
+If set to <SAMP>`on'</SAMP>, tilde expansion is performed when Readline
+attempts word completion. The default is <SAMP>`off'</SAMP>.
+
+<DT><CODE>horizontal-scroll-mode</CODE>
+<DD>
+<A NAME="IDX17"></A>
+This variable can be set to either <SAMP>`on'</SAMP> or <SAMP>`off'</SAMP>. Setting it
+to <SAMP>`on'</SAMP> means that the text of the lines being edited will scroll
+horizontally on a single screen line when they are longer than the width
+of the screen, instead of wrapping onto a new screen line. By default,
+this variable is set to <SAMP>`off'</SAMP>.
+
+<DT><CODE>input-meta</CODE>
+<DD>
+<A NAME="IDX18"></A>
+<A NAME="IDX19"></A>
+If set to <SAMP>`on'</SAMP>, Readline will enable eight-bit input (it
+will not strip the eighth bit from the characters it reads),
+regardless of what the terminal claims it can support. The
+default value is <SAMP>`off'</SAMP>. The name <CODE>meta-flag</CODE> is a
+synonym for this variable.
+
+<DT><CODE>isearch-terminators</CODE>
+<DD>
+<A NAME="IDX20"></A>
+The string of characters that should terminate an incremental search without
+subsequently executing the character as a command (see section <A HREF="readline.html#SEC8">Searching for Commands in the History</A>).
+If this variable has not been given a value, the characters <KBD>ESC</KBD> and
+<KBD>C-J</KBD> will terminate an incremental search.
+
+<DT><CODE>keymap</CODE>
+<DD>
+<A NAME="IDX21"></A>
+Sets Readline's idea of the current keymap for key binding commands.
+Acceptable <CODE>keymap</CODE> names are
+<CODE>emacs</CODE>,
+<CODE>emacs-standard</CODE>,
+<CODE>emacs-meta</CODE>,
+<CODE>emacs-ctlx</CODE>,
+<CODE>vi</CODE>,
+<CODE>vi-command</CODE>, and
+<CODE>vi-insert</CODE>.
+<CODE>vi</CODE> is equivalent to <CODE>vi-command</CODE>; <CODE>emacs</CODE> is
+equivalent to <CODE>emacs-standard</CODE>. The default value is <CODE>emacs</CODE>.
+The value of the <CODE>editing-mode</CODE> variable also affects the
+default keymap.
+
+<DT><CODE>mark-directories</CODE>
+<DD>
+If set to <SAMP>`on'</SAMP>, completed directory names have a slash
+appended. The default is <SAMP>`on'</SAMP>.
+
+<DT><CODE>mark-modified-lines</CODE>
+<DD>
+<A NAME="IDX22"></A>
+This variable, when set to <SAMP>`on'</SAMP>, causes Readline to display an
+asterisk (<SAMP>`*'</SAMP>) at the start of history lines which have been modified.
+This variable is <SAMP>`off'</SAMP> by default.
+
+<DT><CODE>output-meta</CODE>
+<DD>
+<A NAME="IDX23"></A>
+If set to <SAMP>`on'</SAMP>, Readline will display characters with the
+eighth bit set directly rather than as a meta-prefixed escape
+sequence. The default is <SAMP>`off'</SAMP>.
+
+<DT><CODE>print-completions-horizontally</CODE>
+<DD>
+If set to <SAMP>`on'</SAMP>, Readline will display completions with matches
+sorted horizontally in alphabetical order, rather than down the screen.
+The default is <SAMP>`off'</SAMP>.
+
+<DT><CODE>show-all-if-ambiguous</CODE>
+<DD>
+<A NAME="IDX24"></A>
+This alters the default behavior of the completion functions. If
+set to <SAMP>`on'</SAMP>,
+words which have more than one possible completion cause the
+matches to be listed immediately instead of ringing the bell.
+The default value is <SAMP>`off'</SAMP>.
+
+<DT><CODE>visible-stats</CODE>
+<DD>
+<A NAME="IDX25"></A>
+If set to <SAMP>`on'</SAMP>, a character denoting a file's type
+is appended to the filename when listing possible
+completions. The default is <SAMP>`off'</SAMP>.
+
+</DL>
+
+<DT>Key Bindings
+<DD>
+The syntax for controlling key bindings in the init file is
+simple. First you have to know the name of the command that you
+want to change. The following sections contain tables of the command
+name, the default keybinding, if any, and a short description of what
+the command does.
+
+Once you know the name of the command, simply place the name of the key
+you wish to bind the command to, a colon, and then the name of the
+command on a line in the init file. The name of the key
+can be expressed in different ways, depending on which is most
+comfortable for you.
+
+<DL COMPACT>
+
+<DT><VAR>keyname</VAR>: <VAR>function-name</VAR> or <VAR>macro</VAR>
+<DD>
+<VAR>keyname</VAR> is the name of a key spelled out in English. For example:
+
+<PRE>
+Control-u: universal-argument
+Meta-Rubout: backward-kill-word
+Control-o: "> output"
+</PRE>
+
+In the above example, <KBD>C-u</KBD> is bound to the function
+<CODE>universal-argument</CODE>, and <KBD>C-o</KBD> is bound to run the macro
+expressed on the right hand side (that is, to insert the text
+<SAMP>`> output'</SAMP> into the line).
+
+<DT>"<VAR>keyseq</VAR>": <VAR>function-name</VAR> or <VAR>macro</VAR>
+<DD>
+<VAR>keyseq</VAR> differs from <VAR>keyname</VAR> above in that strings
+denoting an entire key sequence can be specified, by placing
+the key sequence in double quotes. Some GNU Emacs style key
+escapes can be used, as in the following example, but the
+special character names are not recognized.
+
+
+<PRE>
+"\C-u": universal-argument
+"\C-x\C-r": re-read-init-file
+"\e[11~": "Function Key 1"
+</PRE>
+
+In the above example, <KBD>C-u</KBD> is bound to the function
+<CODE>universal-argument</CODE> (just as it was in the first example),
+<SAMP>`<KBD>C-x</KBD> <KBD>C-r</KBD>'</SAMP> is bound to the function <CODE>re-read-init-file</CODE>,
+and <SAMP>`<KBD>ESC</KBD> <KBD>[</KBD> <KBD>1</KBD> <KBD>1</KBD> <KBD>~</KBD>'</SAMP> is bound to insert
+the text <SAMP>`Function Key 1'</SAMP>.
+
+</DL>
+
+The following GNU Emacs style escape sequences are available when
+specifying key sequences:
+
+<DL COMPACT>
+
+<DT><CODE><KBD>\C-</KBD></CODE>
+<DD>
+control prefix
+<DT><CODE><KBD>\M-</KBD></CODE>
+<DD>
+meta prefix
+<DT><CODE><KBD>\e</KBD></CODE>
+<DD>
+an escape character
+<DT><CODE><KBD>\\</KBD></CODE>
+<DD>
+backslash
+<DT><CODE><KBD>\"</KBD></CODE>
+<DD>
+<KBD>"</KBD>
+<DT><CODE><KBD>\'</KBD></CODE>
+<DD>
+<KBD>'</KBD>
+</DL>
+
+In addition to the GNU Emacs style escape sequences, a second
+set of backslash escapes is available:
+
+<DL COMPACT>
+
+<DT><CODE>\a</CODE>
+<DD>
+alert (bell)
+<DT><CODE>\b</CODE>
+<DD>
+backspace
+<DT><CODE>\d</CODE>
+<DD>
+delete
+<DT><CODE>\f</CODE>
+<DD>
+form feed
+<DT><CODE>\n</CODE>
+<DD>
+newline
+<DT><CODE>\r</CODE>
+<DD>
+carriage return
+<DT><CODE>\t</CODE>
+<DD>
+horizontal tab
+<DT><CODE>\v</CODE>
+<DD>
+vertical tab
+<DT><CODE>\<VAR>nnn</VAR></CODE>
+<DD>
+the character whose ASCII code is the octal value <VAR>nnn</VAR>
+(one to three digits)
+<DT><CODE>\x<VAR>nnn</VAR></CODE>
+<DD>
+the character whose ASCII code is the hexadecimal value <VAR>nnn</VAR>
+(one to three digits)
+</DL>
+
+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 <SAMP>`"'</SAMP> and <SAMP>`''</SAMP>.
+For example, the following binding will make <SAMP>`C-x \'</SAMP>
+insert a single <SAMP>`\'</SAMP> into the line:
+
+<PRE>
+"\C-x\\": "\\"
+</PRE>
+
+</DL>
+
+
+
+<H3><A NAME="SEC11" HREF="readline.html#TOC11">Conditional Init Constructs</A></H3>
+
+<P>
+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.
+
+</P>
+<DL COMPACT>
+
+<DT><CODE>$if</CODE>
+<DD>
+The <CODE>$if</CODE> construct allows bindings to be made based on the
+editing mode, the terminal being used, or the application using
+Readline. The text of the test extends to the end of the line;
+no characters are required to isolate it.
+
+<DL COMPACT>
+
+<DT><CODE>mode</CODE>
+<DD>
+The <CODE>mode=</CODE> form of the <CODE>$if</CODE> directive is used to test
+whether Readline is in <CODE>emacs</CODE> or <CODE>vi</CODE> mode.
+This may be used in conjunction
+with the <SAMP>`set keymap'</SAMP> command, for instance, to set bindings in
+the <CODE>emacs-standard</CODE> and <CODE>emacs-ctlx</CODE> keymaps only if
+Readline is starting out in <CODE>emacs</CODE> mode.
+
+<DT><CODE>term</CODE>
+<DD>
+The <CODE>term=</CODE> 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
+<SAMP>`='</SAMP> is tested against both the full name of the terminal and
+the portion of the terminal name before the first <SAMP>`-'</SAMP>. This
+allows <CODE>sun</CODE> to match both <CODE>sun</CODE> and <CODE>sun-cmd</CODE>,
+for instance.
+
+<DT><CODE>application</CODE>
+<DD>
+The <VAR>application</VAR> construct is used to include
+application-specific settings. Each program using the Readline
+library sets the <VAR>application name</VAR>, and you can test for it.
+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 Bash:
+
+<PRE>
+$if Bash
+# Quote the current or previous word
+"\C-xq": "\eb\"\ef\""
+$endif
+</PRE>
+
+</DL>
+
+<DT><CODE>$endif</CODE>
+<DD>
+This command, as seen in the previous example, terminates an
+<CODE>$if</CODE> command.
+
+<DT><CODE>$else</CODE>
+<DD>
+Commands in this branch of the <CODE>$if</CODE> directive are executed if
+the test fails.
+
+<DT><CODE>$include</CODE>
+<DD>
+This directive takes a single filename as an argument and reads commands
+and bindings from that file.
+
+<PRE>
+$include /etc/inputrc
+</PRE>
+
+</DL>
+
+
+
+<H3><A NAME="SEC12" HREF="readline.html#TOC12">Sample Init File</A></H3>
+
+<P>
+Here is an example of an inputrc file. This illustrates key
+binding, variable assignment, and conditional syntax.
+
+</P>
+
+<PRE>
+# This file controls the behaviour of line input editing for
+# programs that use the Gnu Readline library. Existing programs
+# include FTP, Bash, and Gdb.
+#
+# You can re-read the inputrc file with C-x C-r.
+# Lines beginning with '#' are comments.
+#
+# First, include any systemwide bindings and variable assignments from
+# /etc/Inputrc
+$include /etc/Inputrc
+
+#
+# Set various bindings for emacs mode.
+
+set editing-mode emacs
+
+$if mode=emacs
+
+Meta-Control-h: backward-kill-word Text after the function name is ignored
+
+#
+# Arrow keys in keypad mode
+#
+#"\M-OD": backward-char
+#"\M-OC": forward-char
+#"\M-OA": previous-history
+#"\M-OB": next-history
+#
+# Arrow keys in ANSI mode
+#
+"\M-[D": backward-char
+"\M-[C": forward-char
+"\M-[A": previous-history
+"\M-[B": next-history
+#
+# Arrow keys in 8 bit keypad mode
+#
+#"\M-\C-OD": backward-char
+#"\M-\C-OC": forward-char
+#"\M-\C-OA": previous-history
+#"\M-\C-OB": next-history
+#
+# Arrow keys in 8 bit ANSI mode
+#
+#"\M-\C-[D": backward-char
+#"\M-\C-[C": forward-char
+#"\M-\C-[A": previous-history
+#"\M-\C-[B": next-history
+
+C-q: quoted-insert
+
+$endif
+
+# An old-style binding. This happens to be the default.
+TAB: complete
+
+# Macros that are convenient for shell interaction
+$if Bash
+# edit the path
+"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
+# prepare to type a quoted word -- insert open and close double quotes
+# and move to just after the open quote
+"\C-x\"": "\"\"\C-b"
+# insert a backslash (testing backslash escapes in sequences and macros)
+"\C-x\\": "\\"
+# Quote the current or previous word
+"\C-xq": "\eb\"\ef\""
+# Add a binding to refresh the line, which is unbound
+"\C-xr": redraw-current-line
+# Edit variable on current line.
+"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
+$endif
+
+# use a visible bell if one is available
+set bell-style visible
+
+# don't strip characters to 7 bits when reading
+set input-meta on
+
+# allow iso-latin1 characters to be inserted rather than converted to
+# prefix-meta sequences
+set convert-meta off
+
+# display characters with the eighth bit set directly rather than
+# as meta-prefixed characters
+set output-meta on
+
+# if there are more than 150 possible completions for a word, ask the
+# user if he wants to see all of them
+set completion-query-items 150
+
+# For FTP
+$if Ftp
+"\C-xg": "get \M-?"
+"\C-xt": "put \M-?"
+"\M-.": yank-last-arg
+$endif
+</PRE>
+
+
+
+<H2><A NAME="SEC13" HREF="readline.html#TOC13">Bindable Readline Commands</A></H2>
+
+
+<UL>
+<LI><A HREF="readline.html#SEC14">Commands For Moving</A>: Moving about the line.
+<LI><A HREF="readline.html#SEC15">Commands For History</A>: Getting at previous lines.
+<LI><A HREF="readline.html#SEC16">Commands For Text</A>: Commands for changing text.
+<LI><A HREF="readline.html#SEC17">Commands For Killing</A>: Commands for killing and yanking.
+<LI><A HREF="readline.html#SEC18">Numeric Arguments</A>: Specifying numeric arguments, repeat counts.
+<LI><A HREF="readline.html#SEC19">Commands For Completion</A>: Getting Readline to do the typing for you.
+<LI><A HREF="readline.html#SEC20">Keyboard Macros</A>: Saving and re-executing typed characters
+<LI><A HREF="readline.html#SEC21">Miscellaneous Commands</A>: Other miscellaneous commands.
+</UL>
+
+<P>
+This section describes Readline commands that may be bound to key
+sequences.
+
+</P>
+
+
+<H3><A NAME="SEC14" HREF="readline.html#TOC14">Commands For Moving</A></H3>
+<DL COMPACT>
+
+<DT><CODE>beginning-of-line (C-a)</CODE>
+<DD>
+<A NAME="IDX26"></A>
+Move to the start of the current line.
+
+<DT><CODE>end-of-line (C-e)</CODE>
+<DD>
+<A NAME="IDX27"></A>
+Move to the end of the line.
+
+<DT><CODE>forward-char (C-f)</CODE>
+<DD>
+<A NAME="IDX28"></A>
+Move forward a character.
+
+<DT><CODE>backward-char (C-b)</CODE>
+<DD>
+<A NAME="IDX29"></A>
+Move back a character.
+
+<DT><CODE>forward-word (M-f)</CODE>
+<DD>
+<A NAME="IDX30"></A>
+Move forward to the end of the next word. Words are composed of
+letters and digits.
+
+<DT><CODE>backward-word (M-b)</CODE>
+<DD>
+<A NAME="IDX31"></A>
+Move back to the start of this, or the previous, word. Words are
+composed of letters and digits.
+
+<DT><CODE>clear-screen (C-l)</CODE>
+<DD>
+<A NAME="IDX32"></A>
+Clear the screen and redraw the current line,
+leaving the current line at the top of the screen.
+
+<DT><CODE>redraw-current-line ()</CODE>
+<DD>
+<A NAME="IDX33"></A>
+Refresh the current line. By default, this is unbound.
+
+</DL>
+
+
+
+<H3><A NAME="SEC15" HREF="readline.html#TOC15">Commands For Manipulating The History</A></H3>
+
+<DL COMPACT>
+
+<DT><CODE>accept-line (Newline, Return)</CODE>
+<DD>
+<A NAME="IDX34"></A>
+Accept the line regardless of where the cursor is. If this line is
+non-empty, add it to the history list. If this line was a history
+line, then restore the history line to its original state.
+
+<DT><CODE>previous-history (C-p)</CODE>
+<DD>
+<A NAME="IDX35"></A>
+Move `up' through the history list.
+
+<DT><CODE>next-history (C-n)</CODE>
+<DD>
+<A NAME="IDX36"></A>
+Move `down' through the history list.
+
+<DT><CODE>beginning-of-history (M-<)</CODE>
+<DD>
+<A NAME="IDX37"></A>
+Move to the first line in the history.
+
+<DT><CODE>end-of-history (M->)</CODE>
+<DD>
+<A NAME="IDX38"></A>
+Move to the end of the input history, i.e., the line currently
+being entered.
+
+<DT><CODE>reverse-search-history (C-r)</CODE>
+<DD>
+<A NAME="IDX39"></A>
+Search backward starting at the current line and moving `up' through
+the history as necessary. This is an incremental search.
+
+<DT><CODE>forward-search-history (C-s)</CODE>
+<DD>
+<A NAME="IDX40"></A>
+Search forward starting at the current line and moving `down' through
+the the history as necessary. This is an incremental search.
+
+<DT><CODE>non-incremental-reverse-search-history (M-p)</CODE>
+<DD>
+<A NAME="IDX41"></A>
+Search backward starting at the current line and moving `up'
+through the history as necessary using a non-incremental search
+for a string supplied by the user.
+
+<DT><CODE>non-incremental-forward-search-history (M-n)</CODE>
+<DD>
+<A NAME="IDX42"></A>
+Search forward starting at the current line and moving `down'
+through the the history as necessary using a non-incremental search
+for a string supplied by the user.
+
+<DT><CODE>history-search-forward ()</CODE>
+<DD>
+<A NAME="IDX43"></A>
+Search forward through the history for the string of characters
+between the start of the current line and the current cursor
+position (the <VAR>point</VAR>). This is a non-incremental search. By
+default, this command is unbound.
+
+<DT><CODE>history-search-backward ()</CODE>
+<DD>
+<A NAME="IDX44"></A>
+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. By default, this command is unbound.
+
+<DT><CODE>yank-nth-arg (M-C-y)</CODE>
+<DD>
+<A NAME="IDX45"></A>
+Insert the first argument to the previous command (usually
+the second word on the previous line). With an argument <VAR>n</VAR>,
+insert the <VAR>n</VAR>th word from the previous command (the words
+in the previous command begin with word 0). A negative argument
+inserts the <VAR>n</VAR>th word from the end of the previous command.
+
+<DT><CODE>yank-last-arg (M-., M-_)</CODE>
+<DD>
+<A NAME="IDX46"></A>
+Insert last argument to the previous command (the last word of the
+previous history entry). With an
+argument, behave exactly like <CODE>yank-nth-arg</CODE>.
+Successive calls to <CODE>yank-last-arg</CODE> move back through the history
+list, inserting the last argument of each line in turn.
+
+</DL>
+
+
+
+<H3><A NAME="SEC16" HREF="readline.html#TOC16">Commands For Changing Text</A></H3>
+
+<DL COMPACT>
+
+<DT><CODE>delete-char (C-d)</CODE>
+<DD>
+<A NAME="IDX47"></A>
+Delete the character under the cursor. If the cursor is at the
+beginning of the line, there are no characters in the line, and
+the last character typed was not bound to <CODE>delete-char</CODE>, then
+return <CODE>EOF</CODE>.
+
+<DT><CODE>backward-delete-char (Rubout)</CODE>
+<DD>
+<A NAME="IDX48"></A>
+Delete the character behind the cursor. A numeric argument means
+to kill the characters instead of deleting them.
+
+<DT><CODE>forward-backward-delete-char ()</CODE>
+<DD>
+<A NAME="IDX49"></A>
+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. By default, this is not bound to a key.
+
+<DT><CODE>quoted-insert (C-q, C-v)</CODE>
+<DD>
+<A NAME="IDX50"></A>
+Add the next character typed to the line verbatim. This is
+how to insert key sequences like <KBD>C-q</KBD>, for example.
+
+<DT><CODE>tab-insert (M-TAB)</CODE>
+<DD>
+<A NAME="IDX51"></A>
+Insert a tab character.
+
+<DT><CODE>self-insert (a, b, A, 1, !, ...)</CODE>
+<DD>
+<A NAME="IDX52"></A>
+Insert yourself.
+
+<DT><CODE>transpose-chars (C-t)</CODE>
+<DD>
+<A NAME="IDX53"></A>
+Drag the character before the cursor forward over
+the character at the cursor, moving the
+cursor forward as well. If the insertion point
+is at the end of the line, then this
+transposes the last two characters of the line.
+Negative arguments don't work.
+
+<DT><CODE>transpose-words (M-t)</CODE>
+<DD>
+<A NAME="IDX54"></A>
+Drag the word behind the cursor past the word in front of the cursor
+moving the cursor over that word as well.
+
+<DT><CODE>upcase-word (M-u)</CODE>
+<DD>
+<A NAME="IDX55"></A>
+Uppercase the current (or following) word. With a negative argument,
+uppercase the previous word, but do not move the cursor.
+
+<DT><CODE>downcase-word (M-l)</CODE>
+<DD>
+<A NAME="IDX56"></A>
+Lowercase the current (or following) word. With a negative argument,
+lowercase the previous word, but do not move the cursor.
+
+<DT><CODE>capitalize-word (M-c)</CODE>
+<DD>
+<A NAME="IDX57"></A>
+Capitalize the current (or following) word. With a negative argument,
+capitalize the previous word, but do not move the cursor.
+
+</DL>
+
+
+
+<H3><A NAME="SEC17" HREF="readline.html#TOC17">Killing And Yanking</A></H3>
+
+<DL COMPACT>
+
+<DT><CODE>kill-line (C-k)</CODE>
+<DD>
+<A NAME="IDX58"></A>
+Kill the text from the current cursor position to the end of the line.
+
+<DT><CODE>backward-kill-line (C-x Rubout)</CODE>
+<DD>
+<A NAME="IDX59"></A>
+Kill backward to the beginning of the line.
+
+<DT><CODE>unix-line-discard (C-u)</CODE>
+<DD>
+<A NAME="IDX60"></A>
+Kill backward from the cursor to the beginning of the current line.
+The killed text is saved on the kill-ring.
+
+<DT><CODE>kill-whole-line ()</CODE>
+<DD>
+<A NAME="IDX61"></A>
+Kill all characters on the current line, no matter where the
+cursor is. By default, this is unbound.
+
+<DT><CODE>kill-word (M-d)</CODE>
+<DD>
+<A NAME="IDX62"></A>
+Kill from the cursor to the end of the current word, or if between
+words, to the end of the next word. Word boundaries are the same
+as <CODE>forward-word</CODE>.
+
+<DT><CODE>backward-kill-word (M-DEL)</CODE>
+<DD>
+<A NAME="IDX63"></A>
+Kill the word behind the cursor. Word boundaries are the same
+as <CODE>backward-word</CODE>.
+
+<DT><CODE>unix-word-rubout (C-w)</CODE>
+<DD>
+<A NAME="IDX64"></A>
+Kill the word behind the cursor, using white space as a word
+boundary. The killed text is saved on the kill-ring.
+
+<DT><CODE>delete-horizontal-space ()</CODE>
+<DD>
+<A NAME="IDX65"></A>
+Delete all spaces and tabs around point. By default, this is unbound.
+
+<DT><CODE>kill-region ()</CODE>
+<DD>
+<A NAME="IDX66"></A>
+Kill the text between the point and the <EM>mark</EM> (saved
+cursor position). This text is referred to as the <VAR>region</VAR>.
+By default, this command is unbound.
+
+<DT><CODE>copy-region-as-kill ()</CODE>
+<DD>
+<A NAME="IDX67"></A>
+Copy the text in the region to the kill buffer, so it can be yanked
+right away. By default, this command is unbound.
+
+<DT><CODE>copy-backward-word ()</CODE>
+<DD>
+<A NAME="IDX68"></A>
+Copy the word before point to the kill buffer.
+The word boundaries are the same as <CODE>backward-word</CODE>.
+By default, this command is unbound.
+
+<DT><CODE>copy-forward-word ()</CODE>
+<DD>
+<A NAME="IDX69"></A>
+Copy the word following point to the kill buffer.
+The word boundaries are the same as <CODE>forward-word</CODE>.
+By default, this command is unbound.
+
+<DT><CODE>yank (C-y)</CODE>
+<DD>
+<A NAME="IDX70"></A>
+Yank the top of the kill ring into the buffer at the current
+cursor position.
+
+<DT><CODE>yank-pop (M-y)</CODE>
+<DD>
+<A NAME="IDX71"></A>
+Rotate the kill-ring, and yank the new top. You can only do this if
+the prior command is yank or yank-pop.
+</DL>
+
+
+
+<H3><A NAME="SEC18" HREF="readline.html#TOC18">Specifying Numeric Arguments</A></H3>
+<DL COMPACT>
+
+<DT><CODE>digit-argument (M-0, M-1, ... M--)</CODE>
+<DD>
+<A NAME="IDX72"></A>
+Add this digit to the argument already accumulating, or start a new
+argument. <KBD>M--</KBD> starts a negative argument.
+
+<DT><CODE>universal-argument ()</CODE>
+<DD>
+<A NAME="IDX73"></A>
+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 <CODE>universal-argument</CODE>
+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.
+By default, this is not bound to a key.
+</DL>
+
+
+
+<H3><A NAME="SEC19" HREF="readline.html#TOC19">Letting Readline Type For You</A></H3>
+
+<DL COMPACT>
+
+<DT><CODE>complete (TAB)</CODE>
+<DD>
+<A NAME="IDX74"></A>
+Attempt to do completion on the text before the cursor. This is
+application-specific. Generally, if you are typing a filename
+argument, you can do filename completion; if you are typing a command,
+you can do command completion; if you are typing in a symbol to GDB, you
+can do symbol name completion; if you are typing in a variable to Bash,
+you can do variable name completion, and so on.
+
+<DT><CODE>possible-completions (M-?)</CODE>
+<DD>
+<A NAME="IDX75"></A>
+List the possible completions of the text before the cursor.
+
+<DT><CODE>insert-completions (M-*)</CODE>
+<DD>
+<A NAME="IDX76"></A>
+Insert all completions of the text before point that would have
+been generated by <CODE>possible-completions</CODE>.
+
+<DT><CODE>menu-complete ()</CODE>
+<DD>
+<A NAME="IDX77"></A>
+Similar to <CODE>complete</CODE>, but replaces the word to be completed
+with a single match from the list of possible completions.
+Repeated execution of <CODE>menu-complete</CODE> steps through the list
+of possible completions, inserting each match in turn.
+At the end of the list of completions, the bell is rung and the
+original text is restored.
+An argument of <VAR>n</VAR> moves <VAR>n</VAR> 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 <CODE>TAB</CODE>, but is unbound
+by default.
+
+<DT><CODE>delete-char-or-list ()</CODE>
+<DD>
+<A NAME="IDX78"></A>
+Deletes the character under the cursor if not at the beginning or
+end of the line (like <CODE>delete-char</CODE>).
+If at the end of the line, behaves identically to
+<CODE>possible-completions</CODE>.
+This command is unbound by default.
+
+</DL>
+
+
+
+<H3><A NAME="SEC20" HREF="readline.html#TOC20">Keyboard Macros</A></H3>
+<DL COMPACT>
+
+<DT><CODE>start-kbd-macro (C-x ()</CODE>
+<DD>
+<A NAME="IDX79"></A>
+Begin saving the characters typed into the current keyboard macro.
+
+<DT><CODE>end-kbd-macro (C-x ))</CODE>
+<DD>
+<A NAME="IDX80"></A>
+Stop saving the characters typed into the current keyboard macro
+and save the definition.
+
+<DT><CODE>call-last-kbd-macro (C-x e)</CODE>
+<DD>
+<A NAME="IDX81"></A>
+Re-execute the last keyboard macro defined, by making the characters
+in the macro appear as if typed at the keyboard.
+
+</DL>
+
+
+
+<H3><A NAME="SEC21" HREF="readline.html#TOC21">Some Miscellaneous Commands</A></H3>
+<DL COMPACT>
+
+<DT><CODE>re-read-init-file (C-x C-r)</CODE>
+<DD>
+<A NAME="IDX82"></A>
+Read in the contents of the inputrc file, and incorporate
+any bindings or variable assignments found there.
+
+<DT><CODE>abort (C-g)</CODE>
+<DD>
+<A NAME="IDX83"></A>
+Abort the current editing command and
+ring the terminal's bell (subject to the setting of
+<CODE>bell-style</CODE>).
+
+<DT><CODE>do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, ...)</CODE>
+<DD>
+<A NAME="IDX84"></A>
+If the metafied character <VAR>x</VAR> is lowercase, run the command
+that is bound to the corresponding uppercase character.
+
+<DT><CODE>prefix-meta (ESC)</CODE>
+<DD>
+<A NAME="IDX85"></A>
+Make the next character typed be metafied. This is for keyboards
+without a meta key. Typing <SAMP>`ESC f'</SAMP> is equivalent to typing
+<SAMP>`M-f'</SAMP>.
+
+<DT><CODE>undo (C-_, C-x C-u)</CODE>
+<DD>
+<A NAME="IDX86"></A>
+Incremental undo, separately remembered for each line.
+
+<DT><CODE>revert-line (M-r)</CODE>
+<DD>
+<A NAME="IDX87"></A>
+Undo all changes made to this line. This is like executing the <CODE>undo</CODE>
+command enough times to get back to the beginning.
+
+<DT><CODE>tilde-expand (M-~)</CODE>
+<DD>
+<A NAME="IDX88"></A>
+Perform tilde expansion on the current word.
+
+<DT><CODE>set-mark (C-@)</CODE>
+<DD>
+<A NAME="IDX89"></A>
+Set the mark to the current point. If a
+numeric argument is supplied, the mark is set to that position.
+
+<DT><CODE>exchange-point-and-mark (C-x C-x)</CODE>
+<DD>
+<A NAME="IDX90"></A>
+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.
+
+<DT><CODE>character-search (C-])</CODE>
+<DD>
+<A NAME="IDX91"></A>
+A character is read and point is moved to the next occurrence of that
+character. A negative count searches for previous occurrences.
+
+<DT><CODE>character-search-backward (M-C-])</CODE>
+<DD>
+<A NAME="IDX92"></A>
+A character is read and point is moved to the previous occurrence
+of that character. A negative count searches for subsequent
+occurrences.
+
+<DT><CODE>insert-comment (M-#)</CODE>
+<DD>
+<A NAME="IDX93"></A>
+The value of the <CODE>comment-begin</CODE>
+variable is inserted at the beginning of the current line,
+and the line is accepted as if a newline had been typed.
+
+<DT><CODE>dump-functions ()</CODE>
+<DD>
+<A NAME="IDX94"></A>
+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 <VAR>inputrc</VAR> file. This command is unbound by default.
+
+<DT><CODE>dump-variables ()</CODE>
+<DD>
+<A NAME="IDX95"></A>
+Print all of the settable 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 <VAR>inputrc</VAR> file. This command is unbound by default.
+
+<DT><CODE>dump-macros ()</CODE>
+<DD>
+<A NAME="IDX96"></A>
+Print all of the Readline key sequences bound to macros and the
+strings they ouput. If a numeric argument is supplied,
+the output is formatted in such a way that it can be made part
+of an <VAR>inputrc</VAR> file. This command is unbound by default.
+
+</DL>
+
+
+
+<H2><A NAME="SEC22" HREF="readline.html#TOC22">Readline vi Mode</A></H2>
+
+<P>
+While the Readline library does not have a full set of <CODE>vi</CODE>
+editing functions, it does contain enough to allow simple editing
+of the line. The Readline <CODE>vi</CODE> mode behaves as specified in
+the POSIX 1003.2 standard.
+
+</P>
+<P>
+In order to switch interactively between <CODE>emacs</CODE> and <CODE>vi</CODE>
+editing modes, use the command M-C-j (toggle-editing-mode).
+The Readline default is <CODE>emacs</CODE> mode.
+
+</P>
+<P>
+When you enter a line in <CODE>vi</CODE> mode, you are already placed in
+`insertion' mode, as if you had typed an <SAMP>`i'</SAMP>. Pressing <KBD>ESC</KBD>
+switches you into `command' mode, where you can edit the text of the
+line with the standard <CODE>vi</CODE> movement keys, move to previous
+history lines with <SAMP>`k'</SAMP> and subsequent lines with <SAMP>`j'</SAMP>, and
+so forth.
+
+</P>
+
+
+
+<H1><A NAME="SEC23" HREF="readline.html#TOC23">Programming with GNU Readline</A></H1>
+
+<P>
+This chapter describes the interface between the GNU Readline Library and
+other programs. If you are a programmer, and you wish to include the
+features found in GNU Readline
+such as completion, line editing, and interactive history manipulation
+in your own programs, this section is for you.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC24">Basic Behavior</A>: Using the default behavior of Readline.
+<LI><A HREF="readline.html#SEC25">Custom Functions</A>: Adding your own functions to Readline.
+<LI><A HREF="readline.html#SEC28">Readline Variables</A>: Variables accessible to custom
+ functions.
+<LI><A HREF="readline.html#SEC29">Readline Convenience Functions</A>: Functions which Readline supplies to
+ aid in writing your own custom
+ functions.
+<LI><A HREF="readline.html#SEC40">Readline Signal Handling</A>: How Readline behaves when it receives signals.
+<LI><A HREF="readline.html#SEC41">Custom Completers</A>: Supplanting or supplementing Readline's
+ completion functions.
+</UL>
+
+
+
+<H2><A NAME="SEC24" HREF="readline.html#TOC24">Basic Behavior</A></H2>
+
+<P>
+Many programs provide a command line interface, such as <CODE>mail</CODE>,
+<CODE>ftp</CODE>, and <CODE>sh</CODE>. For such programs, the default behaviour of
+Readline is sufficient. This section describes how to use Readline in
+the simplest way possible, perhaps to replace calls in your code to
+<CODE>gets()</CODE> or <CODE>fgets ()</CODE>.
+
+</P>
+<P>
+<A NAME="IDX97"></A>
+<A NAME="IDX98"></A>
+The function <CODE>readline ()</CODE> prints a prompt and then reads and returns
+a single line of text from the user. The line <CODE>readline</CODE>
+returns is allocated with <CODE>malloc ()</CODE>; you should <CODE>free ()</CODE>
+the line when you are done with it. The declaration for <CODE>readline</CODE>
+in ANSI C is
+
+</P>
+
+<PRE>
+<CODE>char *readline (char *<VAR>prompt</VAR>);</CODE>
+</PRE>
+
+<P>
+So, one might say
+
+<PRE>
+<CODE>char *line = readline ("Enter a line: ");</CODE>
+</PRE>
+
+<P>
+in order to read a line of text from the user.
+The line returned has the final newline removed, so only the
+text remains.
+
+</P>
+<P>
+If <CODE>readline</CODE> encounters an <CODE>EOF</CODE> while reading the line, and the
+line is empty at that point, then <CODE>(char *)NULL</CODE> is returned.
+Otherwise, the line is ended just as if a newline had been typed.
+
+</P>
+<P>
+If you want the user to be able to get at the line later, (with
+<KBD>C-p</KBD> for example), you must call <CODE>add_history ()</CODE> to save the
+line away in a <EM>history</EM> list of such lines.
+
+</P>
+
+<PRE>
+<CODE>add_history (line)</CODE>;
+</PRE>
+
+<P>
+For full details on the GNU History Library, see the associated manual.
+
+</P>
+<P>
+It is preferable to avoid saving empty lines on the history list, since
+users rarely have a burning need to reuse a blank line. Here is
+a function which usefully replaces the standard <CODE>gets ()</CODE> library
+function, and has the advantage of no static buffer to overflow:
+
+</P>
+
+<PRE>
+/* A static variable for holding the line. */
+static char *line_read = (char *)NULL;
+
+/* Read a string, and return a pointer to it. Returns NULL on EOF. */
+char *
+rl_gets ()
+{
+ /* If the buffer has already been allocated, return the memory
+ to the free pool. */
+ if (line_read)
+ {
+ free (line_read);
+ line_read = (char *)NULL;
+ }
+
+ /* Get a line from the user. */
+ line_read = readline ("");
+
+ /* If the line has any text in it, save it on the history. */
+ if (line_read && *line_read)
+ add_history (line_read);
+
+ return (line_read);
+}
+</PRE>
+
+<P>
+This function gives the user the default behaviour of <KBD>TAB</KBD>
+completion: completion on file names. If you do not want Readline to
+complete on filenames, you can change the binding of the <KBD>TAB</KBD> key
+with <CODE>rl_bind_key ()</CODE>.
+
+</P>
+
+<PRE>
+<CODE>int rl_bind_key (int <VAR>key</VAR>, int (*<VAR>function</VAR>)());</CODE>
+</PRE>
+
+<P>
+<CODE>rl_bind_key ()</CODE> takes two arguments: <VAR>key</VAR> is the character that
+you want to bind, and <VAR>function</VAR> is the address of the function to
+call when <VAR>key</VAR> is pressed. Binding <KBD>TAB</KBD> to <CODE>rl_insert ()</CODE>
+makes <KBD>TAB</KBD> insert itself.
+<CODE>rl_bind_key ()</CODE> returns non-zero if <VAR>key</VAR> is not a valid
+ASCII character code (between 0 and 255).
+
+</P>
+<P>
+Thus, to disable the default <KBD>TAB</KBD> behavior, the following suffices:
+
+<PRE>
+<CODE>rl_bind_key ('\t', rl_insert);</CODE>
+</PRE>
+
+<P>
+This code should be executed once at the start of your program; you
+might write a function called <CODE>initialize_readline ()</CODE> which
+performs this and other desired initializations, such as installing
+custom completers (see section <A HREF="readline.html#SEC41">Custom Completers</A>).
+
+</P>
+
+
+<H2><A NAME="SEC25" HREF="readline.html#TOC25">Custom Functions</A></H2>
+
+<P>
+Readline provides many functions for manipulating the text of
+the line, but it isn't possible to anticipate the needs of all
+programs. This section describes the various functions and variables
+defined within the Readline library which allow a user program to add
+customized functionality to Readline.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC26">The Function Type</A>: C declarations to make code readable.
+<LI><A HREF="readline.html#SEC27">Function Writing</A>: Variables and calling conventions.
+</UL>
+
+
+
+<H3><A NAME="SEC26" HREF="readline.html#TOC26">The Function Type</A></H3>
+
+<P>
+For readabilty, we declare a new type of object, called
+<EM>Function</EM>. A <CODE>Function</CODE> is a C function which
+returns an <CODE>int</CODE>. The type declaration for <CODE>Function</CODE> is:
+
+</P>
+<P>
+<CODE>typedef int Function ();</CODE>
+
+</P>
+<P>
+The reason for declaring this new type is to make it easier to write
+code describing pointers to C functions. Let us say we had a variable
+called <VAR>func</VAR> which was a pointer to a function. Instead of the
+classic C declaration
+
+</P>
+<P>
+<CODE>int (*)()func;</CODE>
+
+</P>
+<P>
+we may write
+
+</P>
+<P>
+<CODE>Function *func;</CODE>
+
+</P>
+<P>
+Similarly, there are
+
+</P>
+
+<PRE>
+typedef void VFunction ();
+typedef char *CPFunction (); and
+typedef char **CPPFunction ();
+</PRE>
+
+<P>
+for functions returning no value, <CODE>pointer to char</CODE>, and
+<CODE>pointer to pointer to char</CODE>, respectively.
+
+</P>
+
+
+<H3><A NAME="SEC27" HREF="readline.html#TOC27">Writing a New Function</A></H3>
+
+<P>
+In order to write new functions for Readline, you need to know the
+calling conventions for keyboard-invoked functions, and the names of the
+variables that describe the current state of the line read so far.
+
+</P>
+<P>
+The calling sequence for a command <CODE>foo</CODE> looks like
+
+</P>
+
+<PRE>
+<CODE>foo (int count, int key)</CODE>
+</PRE>
+
+<P>
+where <VAR>count</VAR> is the numeric argument (or 1 if defaulted) and
+<VAR>key</VAR> is the key that invoked this function.
+
+</P>
+<P>
+It is completely up to the function as to what should be done with the
+numeric argument. Some functions use it as a repeat count, some
+as a flag, and others to choose alternate behavior (refreshing the current
+line as opposed to refreshing the screen, for example). Some choose to
+ignore it. In general, if a
+function uses the numeric argument as a repeat count, it should be able
+to do something useful with both negative and positive arguments.
+At the very least, it should be aware that it can be passed a
+negative argument.
+
+</P>
+
+
+<H2><A NAME="SEC28" HREF="readline.html#TOC28">Readline Variables</A></H2>
+
+<P>
+These variables are available to function writers.
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_line_buffer</B>
+<DD><A NAME="IDX99"></A>
+This is the line gathered so far. You are welcome to modify the
+contents of the line, but see section <A HREF="readline.html#SEC34">Allowing Undoing</A>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_point</B>
+<DD><A NAME="IDX100"></A>
+The offset of the current cursor position in <CODE>rl_line_buffer</CODE>
+(the <EM>point</EM>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_end</B>
+<DD><A NAME="IDX101"></A>
+The number of characters present in <CODE>rl_line_buffer</CODE>. When
+<CODE>rl_point</CODE> is at the end of the line, <CODE>rl_point</CODE> and
+<CODE>rl_end</CODE> are equal.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_mark</B>
+<DD><A NAME="IDX102"></A>
+The mark (saved position) in the current line. If set, the mark
+and point define a <EM>region</EM>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_done</B>
+<DD><A NAME="IDX103"></A>
+Setting this to a non-zero value causes Readline to return the current
+line immediately.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_pending_input</B>
+<DD><A NAME="IDX104"></A>
+Setting this to a value makes it the next keystroke read. This is a
+way to stuff a single character into the input stream.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_erase_empty_line</B>
+<DD><A NAME="IDX105"></A>
+Setting this to a non-zero value causes Readline to completely erase
+the current line, including any prompt, any time a newline is typed as
+the only character on an otherwise-empty line. The cursor is moved to
+the beginning of the newly-blank line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_prompt</B>
+<DD><A NAME="IDX106"></A>
+The prompt Readline uses. This is set from the argument to
+<CODE>readline ()</CODE>, and should not be assigned to directly.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_library_version</B>
+<DD><A NAME="IDX107"></A>
+The version number of this revision of the library.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_terminal_name</B>
+<DD><A NAME="IDX108"></A>
+The terminal type, used for initialization.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_readline_name</B>
+<DD><A NAME="IDX109"></A>
+This variable is set to a unique name by each application using Readline.
+The value allows conditional parsing of the inputrc file
+(see section <A HREF="readline.html#SEC11">Conditional Init Constructs</A>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> FILE * <B>rl_instream</B>
+<DD><A NAME="IDX110"></A>
+The stdio stream from which Readline reads input.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> FILE * <B>rl_outstream</B>
+<DD><A NAME="IDX111"></A>
+The stdio stream to which Readline performs output.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_startup_hook</B>
+<DD><A NAME="IDX112"></A>
+If non-zero, this is the address of a function to call just
+before <CODE>readline</CODE> prints the first prompt.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_pre_input_hook</B>
+<DD><A NAME="IDX113"></A>
+If non-zero, this is the address of a function to call after
+the first prompt has been printed and just before <CODE>readline</CODE>
+starts reading input characters.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_event_hook</B>
+<DD><A NAME="IDX114"></A>
+If non-zero, this is the address of a function to call periodically
+when readline is waiting for terminal input.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_getc_function</B>
+<DD><A NAME="IDX115"></A>
+If non-zero, <CODE>readline</CODE> will call indirectly through this pointer
+to get a character from the input stream. By default, it is set to
+<CODE>rl_getc</CODE>, the default <CODE>readline</CODE> character input function
+(see section <A HREF="readline.html#SEC37">Utility Functions</A>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> VFunction * <B>rl_redisplay_function</B>
+<DD><A NAME="IDX116"></A>
+If non-zero, <CODE>readline</CODE> will call indirectly through this pointer
+to update the display with the current contents of the editing buffer.
+By default, it is set to <CODE>rl_redisplay</CODE>, the default <CODE>readline</CODE>
+redisplay function (see section <A HREF="readline.html#SEC35">Redisplay</A>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Keymap <B>rl_executing_keymap</B>
+<DD><A NAME="IDX117"></A>
+This variable is set to the keymap (see section <A HREF="readline.html#SEC31">Selecting a Keymap</A>) in which the
+currently executing readline function was found.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Keymap <B>rl_binding_keymap</B>
+<DD><A NAME="IDX118"></A>
+This variable is set to the keymap (see section <A HREF="readline.html#SEC31">Selecting a Keymap</A>) in which the
+last key binding occurred.
+</DL>
+
+</P>
+
+
+<H2><A NAME="SEC29" HREF="readline.html#TOC29">Readline Convenience Functions</A></H2>
+
+
+<UL>
+<LI><A HREF="readline.html#SEC30">Function Naming</A>: How to give a function you write a name.
+<LI><A HREF="readline.html#SEC31">Keymaps</A>: Making keymaps.
+<LI><A HREF="readline.html#SEC32">Binding Keys</A>: Changing Keymaps.
+<LI><A HREF="readline.html#SEC33">Associating Function Names and Bindings</A>: Translate function names to
+ key sequences.
+<LI><A HREF="readline.html#SEC34">Allowing Undoing</A>: How to make your functions undoable.
+<LI><A HREF="readline.html#SEC35">Redisplay</A>: Functions to control line display.
+<LI><A HREF="readline.html#SEC36">Modifying Text</A>: Functions to modify <CODE>rl_line_buffer</CODE>.
+<LI><A HREF="readline.html#SEC37">Utility Functions</A>: Generally useful functions and hooks.
+<LI><A HREF="readline.html#SEC38">Alternate Interface</A>: Using Readline in a `callback' fashion.
+</UL>
+
+
+
+<H3><A NAME="SEC30" HREF="readline.html#TOC30">Naming a Function</A></H3>
+
+<P>
+The user can dynamically change the bindings of keys while using
+Readline. This is done by representing the function with a descriptive
+name. The user is able to type the descriptive name when referring to
+the function. Thus, in an init file, one might find
+
+</P>
+
+<PRE>
+Meta-Rubout: backward-kill-word
+</PRE>
+
+<P>
+This binds the keystroke <KBD>Meta-Rubout</KBD> to the function
+<EM>descriptively</EM> named <CODE>backward-kill-word</CODE>. You, as the
+programmer, should bind the functions you write to descriptive names as
+well. Readline provides a function for doing that:
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_add_defun</B> <I>(char *name, Function *function, int key)</I>
+<DD><A NAME="IDX119"></A>
+Add <VAR>name</VAR> to the list of named functions. Make <VAR>function</VAR> be
+the function that gets called. If <VAR>key</VAR> is not -1, then bind it to
+<VAR>function</VAR> using <CODE>rl_bind_key ()</CODE>.
+</DL>
+
+</P>
+<P>
+Using this function alone is sufficient for most applications. It is
+the recommended way to add a few functions to the default functions that
+Readline has built in. If you need to do something other
+than adding a function to Readline, you may need to use the
+underlying functions described below.
+
+</P>
+
+
+<H3><A NAME="SEC31" HREF="readline.html#TOC31">Selecting a Keymap</A></H3>
+
+<P>
+Key bindings take place on a <EM>keymap</EM>. The keymap is the
+association between the keys that the user types and the functions that
+get run. You can make your own keymaps, copy existing keymaps, and tell
+Readline which keymap to use.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Keymap <B>rl_make_bare_keymap</B> <I>()</I>
+<DD><A NAME="IDX120"></A>
+Returns a new, empty keymap. The space for the keymap is allocated with
+<CODE>malloc ()</CODE>; you should <CODE>free ()</CODE> it when you are done.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Keymap <B>rl_copy_keymap</B> <I>(Keymap map)</I>
+<DD><A NAME="IDX121"></A>
+Return a new keymap which is a copy of <VAR>map</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Keymap <B>rl_make_keymap</B> <I>()</I>
+<DD><A NAME="IDX122"></A>
+Return a new keymap with the printing characters bound to rl_insert,
+the lowercase Meta characters bound to run their equivalents, and
+the Meta digits bound to produce numeric arguments.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_discard_keymap</B> <I>(Keymap keymap)</I>
+<DD><A NAME="IDX123"></A>
+Free the storage associated with <VAR>keymap</VAR>.
+</DL>
+
+</P>
+<P>
+Readline has several internal keymaps. These functions allow you to
+change which keymap is active.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Keymap <B>rl_get_keymap</B> <I>()</I>
+<DD><A NAME="IDX124"></A>
+Returns the currently active keymap.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_set_keymap</B> <I>(Keymap keymap)</I>
+<DD><A NAME="IDX125"></A>
+Makes <VAR>keymap</VAR> the currently active keymap.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Keymap <B>rl_get_keymap_by_name</B> <I>(char *name)</I>
+<DD><A NAME="IDX126"></A>
+Return the keymap matching <VAR>name</VAR>. <VAR>name</VAR> is one which would
+be supplied in a <CODE>set keymap</CODE> inputrc line (see section <A HREF="readline.html#SEC9">Readline Init File</A>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>rl_get_keymap_name</B> <I>(Keymap keymap)</I>
+<DD><A NAME="IDX127"></A>
+Return the name matching <VAR>keymap</VAR>. <VAR>name</VAR> is one which would
+be supplied in a <CODE>set keymap</CODE> inputrc line (see section <A HREF="readline.html#SEC9">Readline Init File</A>).
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC32" HREF="readline.html#TOC32">Binding Keys</A></H3>
+
+<P>
+You associate keys with functions through the keymap. Readline has
+several internal keymaps: <CODE>emacs_standard_keymap</CODE>,
+<CODE>emacs_meta_keymap</CODE>, <CODE>emacs_ctlx_keymap</CODE>,
+<CODE>vi_movement_keymap</CODE>, and <CODE>vi_insertion_keymap</CODE>.
+<CODE>emacs_standard_keymap</CODE> is the default, and the examples in
+this manual assume that.
+
+</P>
+<P>
+These functions manage key bindings.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_bind_key</B> <I>(int key, Function *function)</I>
+<DD><A NAME="IDX128"></A>
+Binds <VAR>key</VAR> to <VAR>function</VAR> in the currently active keymap.
+Returns non-zero in the case of an invalid <VAR>key</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_bind_key_in_map</B> <I>(int key, Function *function, Keymap map)</I>
+<DD><A NAME="IDX129"></A>
+Bind <VAR>key</VAR> to <VAR>function</VAR> in <VAR>map</VAR>. Returns non-zero in the case
+of an invalid <VAR>key</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_unbind_key</B> <I>(int key)</I>
+<DD><A NAME="IDX130"></A>
+Bind <VAR>key</VAR> to the null function in the currently active keymap.
+Returns non-zero in case of error.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_unbind_key_in_map</B> <I>(int key, Keymap map)</I>
+<DD><A NAME="IDX131"></A>
+Bind <VAR>key</VAR> to the null function in <VAR>map</VAR>.
+Returns non-zero in case of error.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_unbind_function_in_map</B> <I>(Function *function, Keymap map)</I>
+<DD><A NAME="IDX132"></A>
+Unbind all keys that execute <VAR>function</VAR> in <VAR>map</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_unbind_command_in_map</B> <I>(char *command, Keymap map)</I>
+<DD><A NAME="IDX133"></A>
+Unbind all keys that are bound to <VAR>command</VAR> in <VAR>map</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_generic_bind</B> <I>(int type, char *keyseq, char *data, Keymap map)</I>
+<DD><A NAME="IDX134"></A>
+Bind the key sequence represented by the string <VAR>keyseq</VAR> to the arbitrary
+pointer <VAR>data</VAR>. <VAR>type</VAR> says what kind of data is pointed to by
+<VAR>data</VAR>; this can be a function (<CODE>ISFUNC</CODE>), a macro
+(<CODE>ISMACR</CODE>), or a keymap (<CODE>ISKMAP</CODE>). This makes new keymaps as
+necessary. The initial keymap in which to do bindings is <VAR>map</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_parse_and_bind</B> <I>(char *line)</I>
+<DD><A NAME="IDX135"></A>
+Parse <VAR>line</VAR> as if it had been read from the <CODE>inputrc</CODE> file and
+perform any key bindings and variable assignments found
+(see section <A HREF="readline.html#SEC9">Readline Init File</A>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_read_init_file</B> <I>(char *filename)</I>
+<DD><A NAME="IDX136"></A>
+Read keybindings and variable assignments from <VAR>filename</VAR>
+(see section <A HREF="readline.html#SEC9">Readline Init File</A>).
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC33" HREF="readline.html#TOC33">Associating Function Names and Bindings</A></H3>
+
+<P>
+These functions allow you to find out what keys invoke named functions
+and the functions invoked by a particular key sequence.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Function * <B>rl_named_function</B> <I>(char *name)</I>
+<DD><A NAME="IDX137"></A>
+Return the function with name <VAR>name</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> Function * <B>rl_function_of_keyseq</B> <I>(char *keyseq, Keymap map, int *type)</I>
+<DD><A NAME="IDX138"></A>
+Return the function invoked by <VAR>keyseq</VAR> in keymap <VAR>map</VAR>.
+If <VAR>map</VAR> is NULL, the current keymap is used. If <VAR>type</VAR> is
+not NULL, the type of the object is returned in it (one of <CODE>ISFUNC</CODE>,
+<CODE>ISKMAP</CODE>, or <CODE>ISMACR</CODE>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char ** <B>rl_invoking_keyseqs</B> <I>(Function *function)</I>
+<DD><A NAME="IDX139"></A>
+Return an array of strings representing the key sequences used to
+invoke <VAR>function</VAR> in the current keymap.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char ** <B>rl_invoking_keyseqs_in_map</B> <I>(Function *function, Keymap map)</I>
+<DD><A NAME="IDX140"></A>
+Return an array of strings representing the key sequences used to
+invoke <VAR>function</VAR> in the keymap <VAR>map</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_function_dumper</B> <I>(int readable)</I>
+<DD><A NAME="IDX141"></A>
+Print the readline function names and the key sequences currently
+bound to them to <CODE>rl_outstream</CODE>. If <VAR>readable</VAR> is non-zero,
+the list is formatted in such a way that it can be made part of an
+<CODE>inputrc</CODE> file and re-read.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_list_funmap_names</B> <I>()</I>
+<DD><A NAME="IDX142"></A>
+Print the names of all bindable Readline functions to <CODE>rl_outstream</CODE>.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC34" HREF="readline.html#TOC34">Allowing Undoing</A></H3>
+
+<P>
+Supporting the undo command is a painless thing, and makes your
+functions much more useful. It is certainly easy to try
+something if you know you can undo it. I could use an undo function for
+the stock market.
+
+</P>
+<P>
+If your function simply inserts text once, or deletes text once, and
+uses <CODE>rl_insert_text ()</CODE> or <CODE>rl_delete_text ()</CODE> to do it, then
+undoing is already done for you automatically.
+
+</P>
+<P>
+If you do multiple insertions or multiple deletions, or any combination
+of these operations, you should group them together into one operation.
+This is done with <CODE>rl_begin_undo_group ()</CODE> and
+<CODE>rl_end_undo_group ()</CODE>.
+
+</P>
+<P>
+The types of events that can be undone are:
+
+</P>
+
+<PRE>
+enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
+</PRE>
+
+<P>
+Notice that <CODE>UNDO_DELETE</CODE> means to insert some text, and
+<CODE>UNDO_INSERT</CODE> means to delete some text. That is, the undo code
+tells undo what to undo, not how to undo it. <CODE>UNDO_BEGIN</CODE> and
+<CODE>UNDO_END</CODE> are tags added by <CODE>rl_begin_undo_group ()</CODE> and
+<CODE>rl_end_undo_group ()</CODE>.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_begin_undo_group</B> <I>()</I>
+<DD><A NAME="IDX143"></A>
+Begins saving undo information in a group construct. The undo
+information usually comes from calls to <CODE>rl_insert_text ()</CODE> and
+<CODE>rl_delete_text ()</CODE>, but could be the result of calls to
+<CODE>rl_add_undo ()</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_end_undo_group</B> <I>()</I>
+<DD><A NAME="IDX144"></A>
+Closes the current undo group started with <CODE>rl_begin_undo_group
+()</CODE>. There should be one call to <CODE>rl_end_undo_group ()</CODE>
+for each call to <CODE>rl_begin_undo_group ()</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_add_undo</B> <I>(enum undo_code what, int start, int end, char *text)</I>
+<DD><A NAME="IDX145"></A>
+Remember how to undo an event (according to <VAR>what</VAR>). The affected
+text runs from <VAR>start</VAR> to <VAR>end</VAR>, and encompasses <VAR>text</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>free_undo_list</B> <I>()</I>
+<DD><A NAME="IDX146"></A>
+Free the existing undo list.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_do_undo</B> <I>()</I>
+<DD><A NAME="IDX147"></A>
+Undo the first thing on the undo list. Returns <CODE>0</CODE> if there was
+nothing to undo, non-zero if something was undone.
+</DL>
+
+</P>
+<P>
+Finally, if you neither insert nor delete text, but directly modify the
+existing text (e.g., change its case), call <CODE>rl_modifying ()</CODE>
+once, just before you modify the text. You must supply the indices of
+the text range that you are going to modify.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_modifying</B> <I>(int start, int end)</I>
+<DD><A NAME="IDX148"></A>
+Tell Readline to save the text between <VAR>start</VAR> and <VAR>end</VAR> as a
+single undo unit. It is assumed that you will subsequently modify
+that text.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC35" HREF="readline.html#TOC35">Redisplay</A></H3>
+
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_redisplay</B> <I>()</I>
+<DD><A NAME="IDX149"></A>
+Change what's displayed on the screen to reflect the current contents
+of <CODE>rl_line_buffer</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_forced_update_display</B> <I>()</I>
+<DD><A NAME="IDX150"></A>
+Force the line to be updated and redisplayed, whether or not
+Readline thinks the screen display is correct.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_on_new_line</B> <I>()</I>
+<DD><A NAME="IDX151"></A>
+Tell the update routines that we have moved onto a new (empty) line,
+usually after ouputting a newline.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_reset_line_state</B> <I>()</I>
+<DD><A NAME="IDX152"></A>
+Reset the display state to a clean state and redisplay the current line
+starting on a new line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_message</B> <I>(va_alist)</I>
+<DD><A NAME="IDX153"></A>
+The arguments are a string as would be supplied to <CODE>printf</CODE>. The
+resulting string is displayed in the <EM>echo area</EM>. The echo area
+is also used to display numeric arguments and search strings.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_clear_message</B> <I>()</I>
+<DD><A NAME="IDX154"></A>
+Clear the message in the echo area.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_save_prompt</B> <I>()</I>
+<DD><A NAME="IDX155"></A>
+Save the local Readline prompt display state in preparation for
+displaying a new message in the message area with <CODE>rl_message</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_restore_prompt</B> <I>()</I>
+<DD><A NAME="IDX156"></A>
+Restore the local Readline prompt display state saved by the most
+recent call to <CODE>rl_save_prompt</CODE>.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC36" HREF="readline.html#TOC36">Modifying Text</A></H3>
+
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_insert_text</B> <I>(char *text)</I>
+<DD><A NAME="IDX157"></A>
+Insert <VAR>text</VAR> into the line at the current cursor position.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_delete_text</B> <I>(int start, int end)</I>
+<DD><A NAME="IDX158"></A>
+Delete the text between <VAR>start</VAR> and <VAR>end</VAR> in the current line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>rl_copy_text</B> <I>(int start, int end)</I>
+<DD><A NAME="IDX159"></A>
+Return a copy of the text between <VAR>start</VAR> and <VAR>end</VAR> in
+the current line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_kill_text</B> <I>(int start, int end)</I>
+<DD><A NAME="IDX160"></A>
+Copy the text between <VAR>start</VAR> and <VAR>end</VAR> in the current line
+to the kill ring, appending or prepending to the last kill if the
+last command was a kill command. The text is deleted.
+If <VAR>start</VAR> is less than <VAR>end</VAR>,
+the text is appended, otherwise prepended. If the last command was
+not a kill, a new kill ring slot is used.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC37" HREF="readline.html#TOC37">Utility Functions</A></H3>
+
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_read_key</B> <I>()</I>
+<DD><A NAME="IDX161"></A>
+Return the next character available. This handles input inserted into
+the input stream via <VAR>pending input</VAR> (see section <A HREF="readline.html#SEC28">Readline Variables</A>)
+and <CODE>rl_stuff_char ()</CODE>, macros, and characters read from the keyboard.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_getc</B> <I>(FILE *)</I>
+<DD><A NAME="IDX162"></A>
+Return the next character available from the keyboard.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_stuff_char</B> <I>(int c)</I>
+<DD><A NAME="IDX163"></A>
+Insert <VAR>c</VAR> into the Readline input stream. It will be "read"
+before Readline attempts to read characters from the terminal with
+<CODE>rl_read_key ()</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> rl_extend_line_buffer <B>(int</B> <I>len)</I>
+<DD><A NAME="IDX164"></A>
+Ensure that <CODE>rl_line_buffer</CODE> has enough space to hold <VAR>len</VAR>
+characters, possibly reallocating it if necessary.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_initialize</B> <I>()</I>
+<DD><A NAME="IDX165"></A>
+Initialize or re-initialize Readline's internal state.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_reset_terminal</B> <I>(char *terminal_name)</I>
+<DD><A NAME="IDX166"></A>
+Reinitialize Readline's idea of the terminal settings using
+<VAR>terminal_name</VAR> as the terminal type (e.g., <CODE>vt100</CODE>).
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>alphabetic</B> <I>(int c)</I>
+<DD><A NAME="IDX167"></A>
+Return 1 if <VAR>c</VAR> is an alphabetic character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>numeric</B> <I>(int c)</I>
+<DD><A NAME="IDX168"></A>
+Return 1 if <VAR>c</VAR> is a numeric character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>ding</B> <I>()</I>
+<DD><A NAME="IDX169"></A>
+Ring the terminal bell, obeying the setting of <CODE>bell-style</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_display_match_list</B> <I>(char **matches, int len, int max)</I>
+<DD><A NAME="IDX170"></A>
+A convenience function for displaying a list of strings in
+columnar format on Readline's output stream. <CODE>matches</CODE> is the list
+of strings, in argv format, such as a list of completion matches.
+<CODE>len</CODE> is the number of strings in <CODE>matches</CODE>, and <CODE>max</CODE>
+is the length of the longest string in <CODE>matches</CODE>. This function uses
+the setting of <CODE>print-completions-horizontally</CODE> to select how the
+matches are displayed (see section <A HREF="readline.html#SEC10">Readline Init File Syntax</A>).
+</DL>
+
+</P>
+<P>
+The following are implemented as macros, defined in <CODE>chartypes.h</CODE>.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>uppercase_p</B> <I>(int c)</I>
+<DD><A NAME="IDX171"></A>
+Return 1 if <VAR>c</VAR> is an uppercase alphabetic character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>lowercase_p</B> <I>(int c)</I>
+<DD><A NAME="IDX172"></A>
+Return 1 if <VAR>c</VAR> is a lowercase alphabetic character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>digit_p</B> <I>(int c)</I>
+<DD><A NAME="IDX173"></A>
+Return 1 if <VAR>c</VAR> is a numeric character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>to_upper</B> <I>(int c)</I>
+<DD><A NAME="IDX174"></A>
+If <VAR>c</VAR> is a lowercase alphabetic character, return the corresponding
+uppercase character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>to_lower</B> <I>(int c)</I>
+<DD><A NAME="IDX175"></A>
+If <VAR>c</VAR> is an uppercase alphabetic character, return the corresponding
+lowercase character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>digit_value</B> <I>(int c)</I>
+<DD><A NAME="IDX176"></A>
+If <VAR>c</VAR> is a number, return the value it represents.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC38" HREF="readline.html#TOC38">Alternate Interface</A></H3>
+
+<P>
+An alternate interface is available to plain <CODE>readline()</CODE>. Some
+applications need to interleave keyboard I/O with file, device, or
+window system I/O, typically by using a main loop to <CODE>select()</CODE>
+on various file descriptors. To accomodate this need, readline can
+also be invoked as a `callback' function from an event loop. There
+are functions available to make this easy.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_callback_handler_install</B> <I>(char *prompt, Vfunction *lhandler)</I>
+<DD><A NAME="IDX177"></A>
+Set up the terminal for readline I/O and display the initial
+expanded value of <VAR>prompt</VAR>. Save the value of <VAR>lhandler</VAR> to
+use as a callback when a complete line of input has been entered.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_callback_read_char</B> <I>()</I>
+<DD><A NAME="IDX178"></A>
+Whenever an application determines that keyboard input is available, it
+should call <CODE>rl_callback_read_char()</CODE>, which will read the next
+character from the current input source. If that character completes the
+line, <CODE>rl_callback_read_char</CODE> will invoke the <VAR>lhandler</VAR>
+function saved by <CODE>rl_callback_handler_install</CODE> to process the
+line. <CODE>EOF</CODE> is indicated by calling <VAR>lhandler</VAR> with a
+<CODE>NULL</CODE> line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_callback_handler_remove</B> <I>()</I>
+<DD><A NAME="IDX179"></A>
+Restore the terminal to its initial state and remove the line handler.
+This may be called from within a callback as well as independently.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC39" HREF="readline.html#TOC39">An Example</A></H3>
+
+<P>
+Here is a function which changes lowercase characters to their uppercase
+equivalents, and uppercase characters to lowercase. If
+this function was bound to <SAMP>`M-c'</SAMP>, then typing <SAMP>`M-c'</SAMP> would
+change the case of the character under point. Typing <SAMP>`M-1 0 M-c'</SAMP>
+would change the case of the following 10 characters, leaving the cursor on
+the last character changed.
+
+</P>
+
+<PRE>
+/* Invert the case of the COUNT following characters. */
+int
+invert_case_line (count, key)
+ int count, key;
+{
+ register int start, end, i;
+
+ start = rl_point;
+
+ if (rl_point >= rl_end)
+ return (0);
+
+ if (count < 0)
+ {
+ direction = -1;
+ count = -count;
+ }
+ else
+ direction = 1;
+
+ /* Find the end of the range to modify. */
+ end = start + (count * direction);
+
+ /* Force it to be within range. */
+ if (end > rl_end)
+ end = rl_end;
+ else if (end < 0)
+ end = 0;
+
+ if (start == end)
+ return (0);
+
+ if (start > end)
+ {
+ int temp = start;
+ start = end;
+ end = temp;
+ }
+
+ /* Tell readline that we are modifying the line, so it will save
+ the undo information. */
+ rl_modifying (start, end);
+
+ for (i = start; i != end; i++)
+ {
+ if (uppercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_lower (rl_line_buffer[i]);
+ else if (lowercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_upper (rl_line_buffer[i]);
+ }
+ /* Move point to on top of the last character changed. */
+ rl_point = (direction == 1) ? end - 1 : start;
+ return (0);
+}
+</PRE>
+
+
+
+<H2><A NAME="SEC40" HREF="readline.html#TOC40">Readline Signal Handling</A></H2>
+
+<P>
+Signals are asynchronous events sent to a process by the Unix kernel,
+sometimes on behalf of another process. They are intended to indicate
+exceptional events, like a user pressing the interrupt key on his
+terminal, or a network connection being broken. There is a class of
+signals that can be sent to the process currently reading input from
+the keyboard. Since Readline changes the terminal attributes when it
+is called, it needs to perform special processing when a signal is
+received to restore the terminal to a sane state, or provide application
+writers with functions to do so manually.
+
+</P>
+<P>
+Readline contains an internal signal handler that is installed for a
+number of signals (<CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>, <CODE>SIGTERM</CODE>,
+<CODE>SIGALRM</CODE>, <CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>, and <CODE>SIGTTOU</CODE>).
+When one of these signals is received, the signal handler
+will reset the terminal attributes to those that were in effect before
+<CODE>readline ()</CODE> was called, reset the signal handling to what it was
+before <CODE>readline ()</CODE> was called, and resend the signal to the calling
+application.
+If and when the calling application's signal handler returns, Readline
+will reinitialize the terminal and continue to accept input.
+When a <CODE>SIGINT</CODE> is received, the Readline signal handler performs
+some additional work, which will cause any partially-entered line to be
+aborted (see the description of <CODE>rl_free_line_state ()</CODE>).
+
+</P>
+<P>
+There is an additional Readline signal handler, for <CODE>SIGWINCH</CODE>, which
+the kernel sends to a process whenever the terminal's size changes (for
+example, if a user resizes an <CODE>xterm</CODE>). The Readline <CODE>SIGWINCH</CODE>
+handler updates Readline's internal screen size state, and then calls any
+<CODE>SIGWINCH</CODE> signal handler the calling application has installed.
+Readline calls the application's <CODE>SIGWINCH</CODE> signal handler without
+resetting the terminal to its original state. If the application's signal
+handler does more than update its idea of the terminal size and return (for
+example, a <CODE>longjmp</CODE> back to a main processing loop), it <EM>must</EM>
+call <CODE>rl_cleanup_after_signal ()</CODE> (described below), to restore the
+terminal state.
+
+</P>
+<P>
+Readline provides two variables that allow application writers to
+control whether or not it will catch certain signals and act on them
+when they are received. It is important that applications change the
+values of these variables only when calling <CODE>readline ()</CODE>, not in
+a signal handler, so Readline's internal signal state is not corrupted.
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_catch_signals</B>
+<DD><A NAME="IDX180"></A>
+If this variable is non-zero, Readline will install signal handlers for
+<CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>, <CODE>SIGTERM</CODE>, <CODE>SIGALRM</CODE>,
+<CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>, and <CODE>SIGTTOU</CODE>.
+
+</P>
+<P>
+The default value of <CODE>rl_catch_signals</CODE> is 1.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_catch_sigwinch</B>
+<DD><A NAME="IDX181"></A>
+If this variable is non-zero, Readline will install a signal handler for
+<CODE>SIGWINCH</CODE>.
+
+</P>
+<P>
+The default value of <CODE>rl_catch_sigwinch</CODE> is 1.
+</DL>
+
+</P>
+<P>
+If an application does not wish to have Readline catch any signals, or
+to handle signals other than those Readline catches (<CODE>SIGHUP</CODE>,
+for example),
+Readline provides convenience functions to do the necessary terminal
+and internal state cleanup upon receipt of a signal.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_cleanup_after_signal</B> <I>(void)</I>
+<DD><A NAME="IDX182"></A>
+This function will reset the state of the terminal to what it was before
+<CODE>readline ()</CODE> was called, and remove the Readline signal handlers for
+all signals, depending on the values of <CODE>rl_catch_signals</CODE> and
+<CODE>rl_catch_sigwinch</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_free_line_state</B> <I>(void)</I>
+<DD><A NAME="IDX183"></A>
+This will free any partial state associated with the current input line
+(undo information, any partial history entry, any partially-entered
+keyboard macro, and any partially-entered numeric argument). This
+should be called before <CODE>rl_cleanup_after_signal ()</CODE>. The
+Readline signal handler for <CODE>SIGINT</CODE> calls this to abort the
+current input line.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_reset_after_signal</B> <I>(void)</I>
+<DD><A NAME="IDX184"></A>
+This will reinitialize the terminal and reinstall any Readline signal
+handlers, depending on the values of <CODE>rl_catch_signals</CODE> and
+<CODE>rl_catch_sigwinch</CODE>.
+</DL>
+
+</P>
+<P>
+If an application does not wish Readline to catch <CODE>SIGWINCH</CODE>, it may
+call <CODE>rl_resize_terminal ()</CODE> to force Readline to update its idea of
+the terminal size when a <CODE>SIGWINCH</CODE> is received.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> void <B>rl_resize_terminal</B> <I>(void)</I>
+<DD><A NAME="IDX185"></A>
+Update Readline's internal screen size.
+</DL>
+
+</P>
+<P>
+The following functions install and remove Readline's signal handlers.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_set_signals</B> <I>(void)</I>
+<DD><A NAME="IDX186"></A>
+Install Readline's signal handler for <CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>,
+<CODE>SIGTERM</CODE>, <CODE>SIGALRM</CODE>, <CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>,
+<CODE>SIGTTOU</CODE>, and <CODE>SIGWINCH</CODE>, depending on the values of
+<CODE>rl_catch_signals</CODE> and <CODE>rl_catch_sigwinch</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_clear_signals</B> <I>(void)</I>
+<DD><A NAME="IDX187"></A>
+Remove all of the Readline signal handlers installed by
+<CODE>rl_set_signals ()</CODE>.
+</DL>
+
+</P>
+
+
+<H2><A NAME="SEC41" HREF="readline.html#TOC41">Custom Completers</A></H2>
+
+<P>
+Typically, a program that reads commands from the user has a way of
+disambiguating commands and data. If your program is one of these, then
+it can provide completion for commands, data, or both.
+The following sections describe how your program and Readline
+cooperate to provide this service.
+
+</P>
+
+<UL>
+<LI><A HREF="readline.html#SEC42">How Completing Works</A>: The logic used to do completion.
+<LI><A HREF="readline.html#SEC43">Completion Functions</A>: Functions provided by Readline.
+<LI><A HREF="readline.html#SEC44">Completion Variables</A>: Variables which control completion.
+<LI><A HREF="readline.html#SEC45">A Short Completion Example</A>: An example of writing completer subroutines.
+</UL>
+
+
+
+<H3><A NAME="SEC42" HREF="readline.html#TOC42">How Completing Works</A></H3>
+
+<P>
+In order to complete some text, the full list of possible completions
+must be available. That is, it is not possible to accurately
+expand a partial word without knowing all of the possible words
+which make sense in that context. The Readline library provides
+the user interface to completion, and two of the most common
+completion functions: filename and username. For completing other types
+of text, you must write your own completion function. This section
+describes exactly what such functions must do, and provides an example.
+
+</P>
+<P>
+There are three major functions used to perform completion:
+
+</P>
+
+<OL>
+<LI>
+
+The user-interface function <CODE>rl_complete ()</CODE>. This function is
+called with the same arguments as other Readline
+functions intended for interactive use: <VAR>count</VAR> and
+<VAR>invoking_key</VAR>. It isolates the word to be completed and calls
+<CODE>completion_matches ()</CODE> to generate a list of possible completions.
+It then either lists the possible completions, inserts the possible
+completions, or actually performs the
+completion, depending on which behavior is desired.
+
+<LI>
+
+The internal function <CODE>completion_matches ()</CODE> uses your
+<EM>generator</EM> function to generate the list of possible matches, and
+then returns the array of these matches. You should place the address
+of your generator function in <CODE>rl_completion_entry_function</CODE>.
+
+<LI>
+
+The generator function is called repeatedly from
+<CODE>completion_matches ()</CODE>, returning a string each time. The
+arguments to the generator function are <VAR>text</VAR> and <VAR>state</VAR>.
+<VAR>text</VAR> is the partial word to be completed. <VAR>state</VAR> is zero the
+first time the function is called, allowing the generator to perform
+any necessary initialization, and a positive non-zero integer for
+each subsequent call. When the generator function returns
+<CODE>(char *)NULL</CODE> this signals <CODE>completion_matches ()</CODE> that there are
+no more possibilities left. Usually the generator function computes the
+list of possible completions when <VAR>state</VAR> is zero, and returns them
+one at a time on subsequent calls. Each string the generator function
+returns as a match must be allocated with <CODE>malloc()</CODE>; Readline
+frees the strings when it has finished with them.
+
+</OL>
+
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_complete</B> <I>(int ignore, int invoking_key)</I>
+<DD><A NAME="IDX188"></A>
+Complete the word at or before point. You have supplied the function
+that does the initial simple matching selection algorithm (see
+<CODE>completion_matches ()</CODE>). The default is to do filename completion.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_completion_entry_function</B>
+<DD><A NAME="IDX189"></A>
+This is a pointer to the generator function for <CODE>completion_matches
+()</CODE>. If the value of <CODE>rl_completion_entry_function</CODE> is
+<CODE>(Function *)NULL</CODE> then the default filename generator function,
+<CODE>filename_completion_function ()</CODE>, is used.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC43" HREF="readline.html#TOC43">Completion Functions</A></H3>
+
+<P>
+Here is the complete list of callable completion functions present in
+Readline.
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_complete_internal</B> <I>(int what_to_do)</I>
+<DD><A NAME="IDX190"></A>
+Complete the word at or before point. <VAR>what_to_do</VAR> says what to do
+with the completion. A value of <SAMP>`?'</SAMP> means list the possible
+completions. <SAMP>`TAB'</SAMP> means do standard completion. <SAMP>`*'</SAMP> means
+insert all of the possible completions. <SAMP>`!'</SAMP> means to display
+all of the possible completions, if there is more than one, as well as
+performing partial completion.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_complete</B> <I>(int ignore, int invoking_key)</I>
+<DD><A NAME="IDX191"></A>
+Complete the word at or before point. You have supplied the function
+that does the initial simple matching selection algorithm (see
+<CODE>completion_matches ()</CODE> and <CODE>rl_completion_entry_function</CODE>).
+The default is to do filename
+completion. This calls <CODE>rl_complete_internal ()</CODE> with an
+argument depending on <VAR>invoking_key</VAR>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_possible_completions</B> <I>(int count, int invoking_key))</I>
+<DD><A NAME="IDX192"></A>
+List the possible completions. See description of <CODE>rl_complete
+()</CODE>. This calls <CODE>rl_complete_internal ()</CODE> with an argument of
+<SAMP>`?'</SAMP>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> int <B>rl_insert_completions</B> <I>(int count, int invoking_key))</I>
+<DD><A NAME="IDX193"></A>
+Insert the list of possible completions into the line, deleting the
+partially-completed word. See description of <CODE>rl_complete ()</CODE>.
+This calls <CODE>rl_complete_internal ()</CODE> with an argument of <SAMP>`*'</SAMP>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char ** <B>completion_matches</B> <I>(char *text, CPFunction *entry_func)</I>
+<DD><A NAME="IDX194"></A>
+Returns an array of <CODE>(char *)</CODE> which is a list of completions for
+<VAR>text</VAR>. If there are no completions, returns <CODE>(char **)NULL</CODE>.
+The first entry in the returned array is the substitution for <VAR>text</VAR>.
+The remaining entries are the possible completions. The array is
+terminated with a <CODE>NULL</CODE> pointer.
+
+</P>
+<P>
+<VAR>entry_func</VAR> is a function of two args, and returns a
+<CODE>(char *)</CODE>. The first argument is <VAR>text</VAR>. The second is a
+state argument; it is zero on the first call, and non-zero on subsequent
+calls. <VAR>entry_func</VAR> returns a <CODE>NULL</CODE> pointer to the caller
+when there are no more matches.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>filename_completion_function</B> <I>(char *text, int state)</I>
+<DD><A NAME="IDX195"></A>
+A generator function for filename completion in the general case. Note
+that completion in Bash is a little different because of all
+the pathnames that must be followed when looking up completions for a
+command. The Bash source is a useful reference for writing custom
+completion functions.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Function:</U> char * <B>username_completion_function</B> <I>(char *text, int state)</I>
+<DD><A NAME="IDX196"></A>
+A completion generator for usernames. <VAR>text</VAR> contains a partial
+username preceded by a random character (usually <SAMP>`~'</SAMP>). As with all
+completion generators, <VAR>state</VAR> is zero on the first call and non-zero
+for subsequent calls.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC44" HREF="readline.html#TOC44">Completion Variables</A></H3>
+
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_completion_entry_function</B>
+<DD><A NAME="IDX197"></A>
+A pointer to the generator function for <CODE>completion_matches ()</CODE>.
+<CODE>NULL</CODE> means to use <CODE>filename_entry_function ()</CODE>, the default
+filename completer.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> CPPFunction * <B>rl_attempted_completion_function</B>
+<DD><A NAME="IDX198"></A>
+A pointer to an alternative function to create matches.
+The function is called with <VAR>text</VAR>, <VAR>start</VAR>, and <VAR>end</VAR>.
+<VAR>start</VAR> and <VAR>end</VAR> are indices in <CODE>rl_line_buffer</CODE> saying
+what the boundaries of <VAR>text</VAR> are. If this function exists and
+returns <CODE>NULL</CODE>, or if this variable is set to <CODE>NULL</CODE>, then
+<CODE>rl_complete ()</CODE> will call the value of
+<CODE>rl_completion_entry_function</CODE> to generate matches, otherwise the
+array of strings returned will be used.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> CPFunction * <B>rl_filename_quoting_function</B>
+<DD><A NAME="IDX199"></A>
+A pointer to a function that will quote a filename in an application-
+specific fashion. This is called if filename completion is being
+attempted and one of the characters in <CODE>rl_filename_quote_characters</CODE>
+appears in a completed filename. The function is called with
+<VAR>text</VAR>, <VAR>match_type</VAR>, and <VAR>quote_pointer</VAR>. The <VAR>text</VAR>
+is the filename to be quoted. The <VAR>match_type</VAR> is either
+<CODE>SINGLE_MATCH</CODE>, if there is only one completion match, or
+<CODE>MULT_MATCH</CODE>. Some functions use this to decide whether or not to
+insert a closing quote character. The <VAR>quote_pointer</VAR> is a pointer
+to any opening quote character the user typed. Some functions choose
+to reset this character.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> CPFunction * <B>rl_filename_dequoting_function</B>
+<DD><A NAME="IDX200"></A>
+A pointer to a function that will remove application-specific quoting
+characters from a filename before completion is attempted, so those
+characters do not interfere with matching the text against names in
+the filesystem. It is called with <VAR>text</VAR>, the text of the word
+to be dequoted, and <VAR>quote_char</VAR>, which is the quoting character
+that delimits the filename (usually <SAMP>`''</SAMP> or <SAMP>`"'</SAMP>). If
+<VAR>quote_char</VAR> is zero, the filename was not in an embedded string.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_char_is_quoted_p</B>
+<DD><A NAME="IDX201"></A>
+A pointer to a function to call that determines whether or not a specific
+character in the line buffer is quoted, according to whatever quoting
+mechanism the program calling readline uses. The function is called with
+two arguments: <VAR>text</VAR>, the text of the line, and <VAR>index</VAR>, the
+index of the character in the line. It is used to decide whether a
+character found in <CODE>rl_completer_word_break_characters</CODE> should be
+used to break words for the completer.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_completion_query_items</B>
+<DD><A NAME="IDX202"></A>
+Up to this many items will be displayed in response to a
+possible-completions call. After that, we ask the user if she is sure
+she wants to see them all. The default value is 100.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_basic_word_break_characters</B>
+<DD><A NAME="IDX203"></A>
+The basic list of characters that signal a break between words for the
+completer routine. The default value of this variable is the characters
+which break words for completion in Bash, i.e.,
+<CODE>" \t\n\"\\'`@$><=;|&{("</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_basic_quote_characters</B>
+<DD><A NAME="IDX204"></A>
+List of quote characters which can cause a word break.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_completer_word_break_characters</B>
+<DD><A NAME="IDX205"></A>
+The list of characters that signal a break between words for
+<CODE>rl_complete_internal ()</CODE>. The default list is the value of
+<CODE>rl_basic_word_break_characters</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_completer_quote_characters</B>
+<DD><A NAME="IDX206"></A>
+List of characters which can be used to quote a substring of the line.
+Completion occurs on the entire substring, and within the substring
+<CODE>rl_completer_word_break_characters</CODE> are treated as any other character,
+unless they also appear within this list.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_filename_quote_characters</B>
+<DD><A NAME="IDX207"></A>
+A list of characters that cause a filename to be quoted by the completer
+when they appear in a completed filename. The default is the null string.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> char * <B>rl_special_prefixes</B>
+<DD><A NAME="IDX208"></A>
+The list of characters that are word break characters, but should be
+left in <VAR>text</VAR> when it is passed to the completion function.
+Programs can use this to help determine what kind of completing to do.
+For instance, Bash sets this variable to "$@" so that it can complete
+shell variables and hostnames.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_completion_append_character</B>
+<DD><A NAME="IDX209"></A>
+When a single completion alternative matches at the end of the command
+line, this character is appended to the inserted completion text. The
+default is a space character (<SAMP>` '</SAMP>). Setting this to the null
+character (<SAMP>`\0'</SAMP>) prevents anything being appended automatically.
+This can be changed in custom completion functions to
+provide the "most sensible word separator character" according to
+an application-specific command line syntax specification.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_ignore_completion_duplicates</B>
+<DD><A NAME="IDX210"></A>
+If non-zero, then disallow duplicates in the matches. Default is 1.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_filename_completion_desired</B>
+<DD><A NAME="IDX211"></A>
+Non-zero means that the results of the matches are to be treated as
+filenames. This is <EM>always</EM> zero on entry, and can only be changed
+within a completion entry generator function. If it is set to a non-zero
+value, directory names have a slash appended and Readline attempts to
+quote completed filenames if they contain any embedded word break
+characters.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_filename_quoting_desired</B>
+<DD><A NAME="IDX212"></A>
+Non-zero means that the results of the matches are to be quoted using
+double quotes (or an application-specific quoting mechanism) if the
+completed filename contains any characters in
+<CODE>rl_filename_quote_chars</CODE>. This is <EM>always</EM> non-zero
+on entry, and can only be changed within a completion entry generator
+function. The quoting is effected via a call to the function pointed to
+by <CODE>rl_filename_quoting_function</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> int <B>rl_inhibit_completion</B>
+<DD><A NAME="IDX213"></A>
+If this variable is non-zero, completion is inhibit<ed. The completion
+character will be inserted as any other bound to <CODE>self-insert</CODE>.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_ignore_some_completions_function</B>
+<DD><A NAME="IDX214"></A>
+This function, if defined, is called by the completer when real filename
+completion is done, after all the matching names have been generated.
+It is passed a <CODE>NULL</CODE> terminated array of matches.
+The first element (<CODE>matches[0]</CODE>) is the
+maximal substring common to all matches. This function can
+re-arrange the list of matches as required, but each element deleted
+from the array must be freed.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> Function * <B>rl_directory_completion_hook</B>
+<DD><A NAME="IDX215"></A>
+This function, if defined, is allowed to modify the directory portion
+of filenames Readline completes. It is called with the address of a
+string (the current directory name) as an argument. It could be used
+to expand symbolic links or shell variables in pathnames.
+</DL>
+
+</P>
+<P>
+<DL>
+<DT><U>Variable:</U> VFunction * <B>rl_completion_display_matches_hook</B>
+<DD><A NAME="IDX216"></A>
+If non-zero, then this is the address of a function to call when
+completing a word would normally display the list of possible matches.
+This function is called in lieu of Readline displaying the list.
+It takes three arguments:
+(<CODE>char **</CODE><VAR>matches</VAR>, <CODE>int</CODE> <VAR>num_matches</VAR>, <CODE>int</CODE> <VAR>max_length</VAR>)
+where <VAR>matches</VAR> is the array of matching strings,
+<VAR>num_matches</VAR> is the number of strings in that array, and
+<VAR>max_length</VAR> is the length of the longest string in that array.
+Readline provides a convenience function, <CODE>rl_display_match_list</CODE>,
+that takes care of doing the display to Readline's output stream. That
+function may be called from this hook.
+</DL>
+
+</P>
+
+
+<H3><A NAME="SEC45" HREF="readline.html#TOC45">A Short Completion Example</A></H3>
+
+<P>
+Here is a small application demonstrating the use of the GNU Readline
+library. It is called <CODE>fileman</CODE>, and the source code resides in
+<TT>`examples/fileman.c'</TT>. This sample application provides
+completion of command names, line editing features, and access to the
+history list.
+
+</P>
+
+<PRE>
+/* fileman.c -- A tiny application which demonstrates how to use the
+ GNU Readline library. This application interactively allows users
+ to manipulate files and their modes. */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+
+#include <readline/readline.h>
+#include <readline/history.h>
+
+extern char *getwd ();
+extern char *xmalloc ();
+
+/* The names of functions that actually do the manipulation. */
+int com_list (), com_view (), com_rename (), com_stat (), com_pwd ();
+int com_delete (), com_help (), com_cd (), com_quit ();
+
+/* A structure which contains information on the commands this program
+ can understand. */
+
+typedef struct {
+ char *name; /* User printable name of the function. */
+ Function *func; /* Function to call to do the job. */
+ char *doc; /* Documentation for this function. */
+} COMMAND;
+
+COMMAND commands[] = {
+ { "cd", com_cd, "Change to directory DIR" },
+ { "delete", com_delete, "Delete FILE" },
+ { "help", com_help, "Display this text" },
+ { "?", com_help, "Synonym for `help'" },
+ { "list", com_list, "List files in DIR" },
+ { "ls", com_list, "Synonym for `list'" },
+ { "pwd", com_pwd, "Print the current working directory" },
+ { "quit", com_quit, "Quit using Fileman" },
+ { "rename", com_rename, "Rename FILE to NEWNAME" },
+ { "stat", com_stat, "Print out statistics on FILE" },
+ { "view", com_view, "View the contents of FILE" },
+ { (char *)NULL, (Function *)NULL, (char *)NULL }
+};
+
+/* Forward declarations. */
+char *stripwhite ();
+COMMAND *find_command ();
+
+/* The name of this program, as taken from argv[0]. */
+char *progname;
+
+/* When non-zero, this global means the user is done using this program. */
+int done;
+
+char *
+dupstr (s)
+ int s;
+{
+ char *r;
+
+ r = xmalloc (strlen (s) + 1);
+ strcpy (r, s);
+ return (r);
+}
+
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ char *line, *s;
+
+ progname = argv[0];
+
+ initialize_readline (); /* Bind our completer. */
+
+ /* Loop reading and executing lines until the user quits. */
+ for ( ; done == 0; )
+ {
+ line = readline ("FileMan: ");
+
+ if (!line)
+ break;
+
+ /* Remove leading and trailing whitespace from the line.
+ Then, if there is anything left, add it to the history list
+ and execute it. */
+ s = stripwhite (line);
+
+ if (*s)
+ {
+ add_history (s);
+ execute_line (s);
+ }
+
+ free (line);
+ }
+ exit (0);
+}
+
+/* Execute a command line. */
+int
+execute_line (line)
+ char *line;
+{
+ register int i;
+ COMMAND *command;
+ char *word;
+
+ /* Isolate the command word. */
+ i = 0;
+ while (line[i] && whitespace (line[i]))
+ i++;
+ word = line + i;
+
+ while (line[i] && !whitespace (line[i]))
+ i++;
+
+ if (line[i])
+ line[i++] = '\0';
+
+ command = find_command (word);
+
+ if (!command)
+ {
+ fprintf (stderr, "%s: No such command for FileMan.\n", word);
+ return (-1);
+ }
+
+ /* Get argument to command, if any. */
+ while (whitespace (line[i]))
+ i++;
+
+ word = line + i;
+
+ /* Call the function. */
+ return ((*(command->func)) (word));
+}
+
+/* Look up NAME as the name of a command, and return a pointer to that
+ command. Return a NULL pointer if NAME isn't a command name. */
+COMMAND *
+find_command (name)
+ char *name;
+{
+ register int i;
+
+ for (i = 0; commands[i].name; i++)
+ if (strcmp (name, commands[i].name) == 0)
+ return (&commands[i]);
+
+ return ((COMMAND *)NULL);
+}
+
+/* Strip whitespace from the start and end of STRING. Return a pointer
+ into STRING. */
+char *
+stripwhite (string)
+ char *string;
+{
+ register char *s, *t;
+
+ for (s = string; whitespace (*s); s++)
+ ;
+
+ if (*s == 0)
+ return (s);
+
+ t = s + strlen (s) - 1;
+ while (t > s && whitespace (*t))
+ t--;
+ *++t = '\0';
+
+ return s;
+}
+
+/* **************************************************************** */
+/* */
+/* Interface to Readline Completion */
+/* */
+/* **************************************************************** */
+
+char *command_generator ();
+char **fileman_completion ();
+
+/* Tell the GNU Readline library how to complete. We want to try to complete
+ on command names if this is the first word in the line, or on filenames
+ if not. */
+initialize_readline ()
+{
+ /* Allow conditional parsing of the ~/.inputrc file. */
+ rl_readline_name = "FileMan";
+
+ /* Tell the completer that we want a crack first. */
+ rl_attempted_completion_function = (CPPFunction *)fileman_completion;
+}
+
+/* Attempt to complete on the contents of TEXT. START and END bound the
+ region of rl_line_buffer that contains the word to complete. TEXT is
+ the word to complete. We can use the entire contents of rl_line_buffer
+ in case we want to do some simple parsing. Return the array of matches,
+ or NULL if there aren't any. */
+char **
+fileman_completion (text, start, end)
+ char *text;
+ int start, end;
+{
+ char **matches;
+
+ matches = (char **)NULL;
+
+ /* If this word is at the start of the line, then it is a command
+ to complete. Otherwise it is the name of a file in the current
+ directory. */
+ if (start == 0)
+ matches = completion_matches (text, command_generator);
+
+ return (matches);
+}
+
+/* Generator function for command completion. STATE lets us know whether
+ to start from scratch; without any state (i.e. STATE == 0), then we
+ start at the top of the list. */
+char *
+command_generator (text, state)
+ char *text;
+ int state;
+{
+ static int list_index, len;
+ char *name;
+
+ /* If this is a new word to complete, initialize now. This includes
+ saving the length of TEXT for efficiency, and initializing the index
+ variable to 0. */
+ if (!state)
+ {
+ list_index = 0;
+ len = strlen (text);
+ }
+
+ /* Return the next name which partially matches from the command list. */
+ while (name = commands[list_index].name)
+ {
+ list_index++;
+
+ if (strncmp (name, text, len) == 0)
+ return (dupstr(name));
+ }
+
+ /* If no names matched, then return NULL. */
+ return ((char *)NULL);
+}
+
+/* **************************************************************** */
+/* */
+/* FileMan Commands */
+/* */
+/* **************************************************************** */
+
+/* String to pass to system (). This is for the LIST, VIEW and RENAME
+ commands. */
+static char syscom[1024];
+
+/* List the file(s) named in arg. */
+com_list (arg)
+ char *arg;
+{
+ if (!arg)
+ arg = "";
+
+ sprintf (syscom, "ls -FClg %s", arg);
+ return (system (syscom));
+}
+
+com_view (arg)
+ char *arg;
+{
+ if (!valid_argument ("view", arg))
+ return 1;
+
+ sprintf (syscom, "more %s", arg);
+ return (system (syscom));
+}
+
+com_rename (arg)
+ char *arg;
+{
+ too_dangerous ("rename");
+ return (1);
+}
+
+com_stat (arg)
+ char *arg;
+{
+ struct stat finfo;
+
+ if (!valid_argument ("stat", arg))
+ return (1);
+
+ if (stat (arg, &finfo) == -1)
+ {
+ perror (arg);
+ return (1);
+ }
+
+ printf ("Statistics for `%s':\n", arg);
+
+ printf ("%s has %d link%s, and is %d byte%s in length.\n", arg,
+ finfo.st_nlink,
+ (finfo.st_nlink == 1) ? "" : "s",
+ finfo.st_size,
+ (finfo.st_size == 1) ? "" : "s");
+ printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
+ printf (" Last access at: %s", ctime (&finfo.st_atime));
+ printf (" Last modified at: %s", ctime (&finfo.st_mtime));
+ return (0);
+}
+
+com_delete (arg)
+ char *arg;
+{
+ too_dangerous ("delete");
+ return (1);
+}
+
+/* Print out help for ARG, or for all of the commands if ARG is
+ not present. */
+com_help (arg)
+ char *arg;
+{
+ register int i;
+ int printed = 0;
+
+ for (i = 0; commands[i].name; i++)
+ {
+ if (!*arg || (strcmp (arg, commands[i].name) == 0))
+ {
+ printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
+ printed++;
+ }
+ }
+
+ if (!printed)
+ {
+ printf ("No commands match `%s'. Possibilties are:\n", arg);
+
+ for (i = 0; commands[i].name; i++)
+ {
+ /* Print in six columns. */
+ if (printed == 6)
+ {
+ printed = 0;
+ printf ("\n");
+ }
+
+ printf ("%s\t", commands[i].name);
+ printed++;
+ }
+
+ if (printed)
+ printf ("\n");
+ }
+ return (0);
+}
+
+/* Change to the directory ARG. */
+com_cd (arg)
+ char *arg;
+{
+ if (chdir (arg) == -1)
+ {
+ perror (arg);
+ return 1;
+ }
+
+ com_pwd ("");
+ return (0);
+}
+
+/* Print out the current working directory. */
+com_pwd (ignore)
+ char *ignore;
+{
+ char dir[1024], *s;
+
+ s = getwd (dir);
+ if (s == 0)
+ {
+ printf ("Error getting pwd: %s\n", dir);
+ return 1;
+ }
+
+ printf ("Current directory is %s\n", dir);
+ return 0;
+}
+
+/* The user wishes to quit using this program. Just set DONE non-zero. */
+com_quit (arg)
+ char *arg;
+{
+ done = 1;
+ return (0);
+}
+
+/* Function which tells you that you can't do this. */
+too_dangerous (caller)
+ char *caller;
+{
+ fprintf (stderr,
+ "%s: Too dangerous for me to distribute. Write it yourself.\n",
+ caller);
+}
+
+/* Return non-zero if ARG is a valid argument for CALLER, else print
+ an error message and return zero. */
+int
+valid_argument (caller, arg)
+ char *caller, *arg;
+{
+ if (!arg || !*arg)
+ {
+ fprintf (stderr, "%s: Argument required.\n", caller);
+ return (0);
+ }
+
+ return (1);
+}
+</PRE>
+
+
+
+<H1><A NAME="SEC46" HREF="readline.html#TOC46">Concept Index</A></H1>
+<P>
+Jump to:
+<A HREF="#c">c</A>
+-
+<A HREF="#e">e</A>
+-
+<A HREF="#i">i</A>
+-
+<A HREF="#k">k</A>
+-
+<A HREF="#n">n</A>
+-
+<A HREF="#r">r</A>
+-
+<A HREF="#y">y</A>
+<P>
+<H2><A NAME="c">c</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX3">command editing</A>
+</DIR>
+<H2><A NAME="e">e</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX4">editing command lines</A>
+</DIR>
+<H2><A NAME="i">i</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX8">initialization file, readline</A>
+<LI><A HREF="readline.html#IDX1">interaction, readline</A>
+</DIR>
+<H2><A NAME="k">k</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX7">kill ring</A>
+<LI><A HREF="readline.html#IDX5">killing text</A>
+</DIR>
+<H2><A NAME="n">n</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX2">notation, readline</A>
+</DIR>
+<H2><A NAME="r">r</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX98">readline, function</A>
+</DIR>
+<H2><A NAME="y">y</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX6">yanking text</A>
+</DIR>
+
+</P>
+
+
+<H1><A NAME="SEC47" HREF="readline.html#TOC47">Function and Variable Index</A></H1>
+<P>
+Jump to:
+<A HREF="#(">(</A>
+-
+<A HREF="#a">a</A>
+-
+<A HREF="#b">b</A>
+-
+<A HREF="#c">c</A>
+-
+<A HREF="#d">d</A>
+-
+<A HREF="#e">e</A>
+-
+<A HREF="#f">f</A>
+-
+<A HREF="#h">h</A>
+-
+<A HREF="#i">i</A>
+-
+<A HREF="#k">k</A>
+-
+<A HREF="#l">l</A>
+-
+<A HREF="#m">m</A>
+-
+<A HREF="#n">n</A>
+-
+<A HREF="#o">o</A>
+-
+<A HREF="#p">p</A>
+-
+<A HREF="#q">q</A>
+-
+<A HREF="#r">r</A>
+-
+<A HREF="#s">s</A>
+-
+<A HREF="#t">t</A>
+-
+<A HREF="#u">u</A>
+-
+<A HREF="#v">v</A>
+-
+<A HREF="#y">y</A>
+<P>
+<H2><A NAME="(">(</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX164">(int</A>
+</DIR>
+<H2><A NAME="a">a</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX83">abort (C-g)</A>
+<LI><A HREF="readline.html#IDX34">accept-line (Newline, Return)</A>
+<LI><A HREF="readline.html#IDX167">alphabetic</A>
+</DIR>
+<H2><A NAME="b">b</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX29">backward-char (C-b)</A>
+<LI><A HREF="readline.html#IDX48">backward-delete-char (Rubout)</A>
+<LI><A HREF="readline.html#IDX59">backward-kill-line (C-x Rubout)</A>
+<LI><A HREF="readline.html#IDX63">backward-kill-word (M-DEL)</A>
+<LI><A HREF="readline.html#IDX31">backward-word (M-b)</A>
+<LI><A HREF="readline.html#IDX37">beginning-of-history (M-&#60;)</A>
+<LI><A HREF="readline.html#IDX26">beginning-of-line (C-a)</A>
+<LI><A HREF="readline.html#IDX9">bell-style</A>
+</DIR>
+<H2><A NAME="c">c</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX81">call-last-kbd-macro (C-x e)</A>
+<LI><A HREF="readline.html#IDX57">capitalize-word (M-c)</A>
+<LI><A HREF="readline.html#IDX91">character-search (C-])</A>
+<LI><A HREF="readline.html#IDX92">character-search-backward (M-C-])</A>
+<LI><A HREF="readline.html#IDX32">clear-screen (C-l)</A>
+<LI><A HREF="readline.html#IDX10">comment-begin</A>
+<LI><A HREF="readline.html#IDX74">complete (TAB)</A>
+<LI><A HREF="readline.html#IDX11">completion-query-items</A>
+<LI><A HREF="readline.html#IDX194">completion_matches</A>
+<LI><A HREF="readline.html#IDX12">convert-meta</A>
+<LI><A HREF="readline.html#IDX68">copy-backward-word ()</A>
+<LI><A HREF="readline.html#IDX69">copy-forward-word ()</A>
+<LI><A HREF="readline.html#IDX67">copy-region-as-kill ()</A>
+</DIR>
+<H2><A NAME="d">d</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX47">delete-char (C-d)</A>
+<LI><A HREF="readline.html#IDX78">delete-char-or-list ()</A>
+<LI><A HREF="readline.html#IDX65">delete-horizontal-space ()</A>
+<LI><A HREF="readline.html#IDX72">digit-argument (M-0, M-1, ... M--)</A>
+<LI><A HREF="readline.html#IDX173">digit_p</A>
+<LI><A HREF="readline.html#IDX176">digit_value</A>
+<LI><A HREF="readline.html#IDX169">ding</A>
+<LI><A HREF="readline.html#IDX13">disable-completion</A>
+<LI><A HREF="readline.html#IDX84">do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, ...)</A>
+<LI><A HREF="readline.html#IDX56">downcase-word (M-l)</A>
+<LI><A HREF="readline.html#IDX94">dump-functions ()</A>
+<LI><A HREF="readline.html#IDX96">dump-macros ()</A>
+<LI><A HREF="readline.html#IDX95">dump-variables ()</A>
+</DIR>
+<H2><A NAME="e">e</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX14">editing-mode</A>
+<LI><A HREF="readline.html#IDX15">enable-keypad</A>
+<LI><A HREF="readline.html#IDX80">end-kbd-macro (C-x ))</A>
+<LI><A HREF="readline.html#IDX38">end-of-history (M-&#62;)</A>
+<LI><A HREF="readline.html#IDX27">end-of-line (C-e)</A>
+<LI><A HREF="readline.html#IDX90">exchange-point-and-mark (C-x C-x)</A>
+<LI><A HREF="readline.html#IDX16">expand-tilde</A>
+</DIR>
+<H2><A NAME="f">f</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX195">filename_completion_function</A>
+<LI><A HREF="readline.html#IDX49">forward-backward-delete-char ()</A>
+<LI><A HREF="readline.html#IDX28">forward-char (C-f)</A>
+<LI><A HREF="readline.html#IDX40">forward-search-history (C-s)</A>
+<LI><A HREF="readline.html#IDX30">forward-word (M-f)</A>
+<LI><A HREF="readline.html#IDX146">free_undo_list</A>
+</DIR>
+<H2><A NAME="h">h</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX44">history-search-backward ()</A>
+<LI><A HREF="readline.html#IDX43">history-search-forward ()</A>
+<LI><A HREF="readline.html#IDX17">horizontal-scroll-mode</A>
+</DIR>
+<H2><A NAME="i">i</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX18">input-meta</A>
+<LI><A HREF="readline.html#IDX93">insert-comment (M-#)</A>
+<LI><A HREF="readline.html#IDX76">insert-completions (M-*)</A>
+<LI><A HREF="readline.html#IDX20">isearch-terminators</A>
+</DIR>
+<H2><A NAME="k">k</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX21">keymap</A>
+<LI><A HREF="readline.html#IDX58">kill-line (C-k)</A>
+<LI><A HREF="readline.html#IDX66">kill-region ()</A>
+<LI><A HREF="readline.html#IDX61">kill-whole-line ()</A>
+<LI><A HREF="readline.html#IDX62">kill-word (M-d)</A>
+</DIR>
+<H2><A NAME="l">l</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX172">lowercase_p</A>
+</DIR>
+<H2><A NAME="m">m</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX22">mark-modified-lines</A>
+<LI><A HREF="readline.html#IDX77">menu-complete ()</A>
+<LI><A HREF="readline.html#IDX19">meta-flag</A>
+</DIR>
+<H2><A NAME="n">n</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX36">next-history (C-n)</A>
+<LI><A HREF="readline.html#IDX42">non-incremental-forward-search-history (M-n)</A>
+<LI><A HREF="readline.html#IDX41">non-incremental-reverse-search-history (M-p)</A>
+<LI><A HREF="readline.html#IDX168">numeric</A>
+</DIR>
+<H2><A NAME="o">o</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX23">output-meta</A>
+</DIR>
+<H2><A NAME="p">p</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX75">possible-completions (M-?)</A>
+<LI><A HREF="readline.html#IDX85">prefix-meta (ESC)</A>
+<LI><A HREF="readline.html#IDX35">previous-history (C-p)</A>
+</DIR>
+<H2><A NAME="q">q</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX50">quoted-insert (C-q, C-v)</A>
+</DIR>
+<H2><A NAME="r">r</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX82">re-read-init-file (C-x C-r)</A>
+<LI><A HREF="readline.html#IDX97">readline</A>
+<LI><A HREF="readline.html#IDX33">redraw-current-line ()</A>
+<LI><A HREF="readline.html#IDX39">reverse-search-history (C-r)</A>
+<LI><A HREF="readline.html#IDX87">revert-line (M-r)</A>
+<LI><A HREF="readline.html#IDX119">rl_add_defun</A>
+<LI><A HREF="readline.html#IDX145">rl_add_undo</A>
+<LI><A HREF="readline.html#IDX198">rl_attempted_completion_function</A>
+<LI><A HREF="readline.html#IDX204">rl_basic_quote_characters</A>
+<LI><A HREF="readline.html#IDX203">rl_basic_word_break_characters</A>
+<LI><A HREF="readline.html#IDX143">rl_begin_undo_group</A>
+<LI><A HREF="readline.html#IDX128">rl_bind_key</A>
+<LI><A HREF="readline.html#IDX129">rl_bind_key_in_map</A>
+<LI><A HREF="readline.html#IDX118">rl_binding_keymap</A>
+<LI><A HREF="readline.html#IDX177">rl_callback_handler_install</A>
+<LI><A HREF="readline.html#IDX179">rl_callback_handler_remove</A>
+<LI><A HREF="readline.html#IDX178">rl_callback_read_char</A>
+<LI><A HREF="readline.html#IDX180">rl_catch_signals</A>
+<LI><A HREF="readline.html#IDX181">rl_catch_sigwinch</A>
+<LI><A HREF="readline.html#IDX201">rl_char_is_quoted_p</A>
+<LI><A HREF="readline.html#IDX182">rl_cleanup_after_signal</A>
+<LI><A HREF="readline.html#IDX154">rl_clear_message</A>
+<LI><A HREF="readline.html#IDX187">rl_clear_signals</A>
+<LI><A HREF="readline.html#IDX188">rl_complete</A>, <A HREF="rlman.html#IDX191">rl_complete</A>
+<LI><A HREF="readline.html#IDX190">rl_complete_internal</A>
+<LI><A HREF="readline.html#IDX206">rl_completer_quote_characters</A>
+<LI><A HREF="readline.html#IDX205">rl_completer_word_break_characters</A>
+<LI><A HREF="readline.html#IDX209">rl_completion_append_character</A>
+<LI><A HREF="readline.html#IDX216">rl_completion_display_matches_hook</A>
+<LI><A HREF="readline.html#IDX189">rl_completion_entry_function</A>, <A HREF="rlman.html#IDX197">rl_completion_entry_function</A>
+<LI><A HREF="readline.html#IDX202">rl_completion_query_items</A>
+<LI><A HREF="readline.html#IDX121">rl_copy_keymap</A>
+<LI><A HREF="readline.html#IDX159">rl_copy_text</A>
+<LI><A HREF="readline.html#IDX158">rl_delete_text</A>
+<LI><A HREF="readline.html#IDX215">rl_directory_completion_hook</A>
+<LI><A HREF="readline.html#IDX123">rl_discard_keymap</A>
+<LI><A HREF="readline.html#IDX170">rl_display_match_list</A>
+<LI><A HREF="readline.html#IDX147">rl_do_undo</A>
+<LI><A HREF="readline.html#IDX103">rl_done</A>
+<LI><A HREF="readline.html#IDX101">rl_end</A>
+<LI><A HREF="readline.html#IDX144">rl_end_undo_group</A>
+<LI><A HREF="readline.html#IDX105">rl_erase_empty_line</A>
+<LI><A HREF="readline.html#IDX114">rl_event_hook</A>
+<LI><A HREF="readline.html#IDX117">rl_executing_keymap</A>
+<LI><A HREF="readline.html#IDX211">rl_filename_completion_desired</A>
+<LI><A HREF="readline.html#IDX200">rl_filename_dequoting_function</A>
+<LI><A HREF="readline.html#IDX207">rl_filename_quote_characters</A>
+<LI><A HREF="readline.html#IDX212">rl_filename_quoting_desired</A>
+<LI><A HREF="readline.html#IDX199">rl_filename_quoting_function</A>
+<LI><A HREF="readline.html#IDX150">rl_forced_update_display</A>
+<LI><A HREF="readline.html#IDX183">rl_free_line_state</A>
+<LI><A HREF="readline.html#IDX141">rl_function_dumper</A>
+<LI><A HREF="readline.html#IDX138">rl_function_of_keyseq</A>
+<LI><A HREF="readline.html#IDX134">rl_generic_bind</A>
+<LI><A HREF="readline.html#IDX124">rl_get_keymap</A>
+<LI><A HREF="readline.html#IDX126">rl_get_keymap_by_name</A>
+<LI><A HREF="readline.html#IDX127">rl_get_keymap_name</A>
+<LI><A HREF="readline.html#IDX162">rl_getc</A>
+<LI><A HREF="readline.html#IDX115">rl_getc_function</A>
+<LI><A HREF="readline.html#IDX210">rl_ignore_completion_duplicates</A>
+<LI><A HREF="readline.html#IDX214">rl_ignore_some_completions_function</A>
+<LI><A HREF="readline.html#IDX213">rl_inhibit_completion</A>
+<LI><A HREF="readline.html#IDX165">rl_initialize</A>
+<LI><A HREF="readline.html#IDX193">rl_insert_completions</A>
+<LI><A HREF="readline.html#IDX157">rl_insert_text</A>
+<LI><A HREF="readline.html#IDX110">rl_instream</A>
+<LI><A HREF="readline.html#IDX139">rl_invoking_keyseqs</A>
+<LI><A HREF="readline.html#IDX140">rl_invoking_keyseqs_in_map</A>
+<LI><A HREF="readline.html#IDX160">rl_kill_text</A>
+<LI><A HREF="readline.html#IDX107">rl_library_version</A>
+<LI><A HREF="readline.html#IDX99">rl_line_buffer</A>
+<LI><A HREF="readline.html#IDX142">rl_list_funmap_names</A>
+<LI><A HREF="readline.html#IDX120">rl_make_bare_keymap</A>
+<LI><A HREF="readline.html#IDX122">rl_make_keymap</A>
+<LI><A HREF="readline.html#IDX102">rl_mark</A>
+<LI><A HREF="readline.html#IDX153">rl_message</A>
+<LI><A HREF="readline.html#IDX148">rl_modifying</A>
+<LI><A HREF="readline.html#IDX137">rl_named_function</A>
+<LI><A HREF="readline.html#IDX151">rl_on_new_line</A>
+<LI><A HREF="readline.html#IDX111">rl_outstream</A>
+<LI><A HREF="readline.html#IDX135">rl_parse_and_bind</A>
+<LI><A HREF="readline.html#IDX104">rl_pending_input</A>
+<LI><A HREF="readline.html#IDX100">rl_point</A>
+<LI><A HREF="readline.html#IDX192">rl_possible_completions</A>
+<LI><A HREF="readline.html#IDX113">rl_pre_input_hook</A>
+<LI><A HREF="readline.html#IDX106">rl_prompt</A>
+<LI><A HREF="readline.html#IDX136">rl_read_init_file</A>
+<LI><A HREF="readline.html#IDX161">rl_read_key</A>
+<LI><A HREF="readline.html#IDX109">rl_readline_name</A>
+<LI><A HREF="readline.html#IDX149">rl_redisplay</A>
+<LI><A HREF="readline.html#IDX116">rl_redisplay_function</A>
+<LI><A HREF="readline.html#IDX184">rl_reset_after_signal</A>
+<LI><A HREF="readline.html#IDX152">rl_reset_line_state</A>
+<LI><A HREF="readline.html#IDX166">rl_reset_terminal</A>
+<LI><A HREF="readline.html#IDX185">rl_resize_terminal</A>
+<LI><A HREF="readline.html#IDX156">rl_restore_prompt</A>
+<LI><A HREF="readline.html#IDX155">rl_save_prompt</A>
+<LI><A HREF="readline.html#IDX125">rl_set_keymap</A>
+<LI><A HREF="readline.html#IDX186">rl_set_signals</A>
+<LI><A HREF="readline.html#IDX208">rl_special_prefixes</A>
+<LI><A HREF="readline.html#IDX112">rl_startup_hook</A>
+<LI><A HREF="readline.html#IDX163">rl_stuff_char</A>
+<LI><A HREF="readline.html#IDX108">rl_terminal_name</A>
+<LI><A HREF="readline.html#IDX133">rl_unbind_command_in_map</A>
+<LI><A HREF="readline.html#IDX132">rl_unbind_function_in_map</A>
+<LI><A HREF="readline.html#IDX130">rl_unbind_key</A>
+<LI><A HREF="readline.html#IDX131">rl_unbind_key_in_map</A>
+</DIR>
+<H2><A NAME="s">s</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX52">self-insert (a, b, A, 1, !, ...)</A>
+<LI><A HREF="readline.html#IDX89">set-mark (C-@)</A>
+<LI><A HREF="readline.html#IDX24">show-all-if-ambiguous</A>
+<LI><A HREF="readline.html#IDX79">start-kbd-macro (C-x ()</A>
+</DIR>
+<H2><A NAME="t">t</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX51">tab-insert (M-TAB)</A>
+<LI><A HREF="readline.html#IDX88">tilde-expand (M-~)</A>
+<LI><A HREF="readline.html#IDX175">to_lower</A>
+<LI><A HREF="readline.html#IDX174">to_upper</A>
+<LI><A HREF="readline.html#IDX53">transpose-chars (C-t)</A>
+<LI><A HREF="readline.html#IDX54">transpose-words (M-t)</A>
+</DIR>
+<H2><A NAME="u">u</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX86">undo (C-_, C-x C-u)</A>
+<LI><A HREF="readline.html#IDX73">universal-argument ()</A>
+<LI><A HREF="readline.html#IDX60">unix-line-discard (C-u)</A>
+<LI><A HREF="readline.html#IDX64">unix-word-rubout (C-w)</A>
+<LI><A HREF="readline.html#IDX55">upcase-word (M-u)</A>
+<LI><A HREF="readline.html#IDX171">uppercase_p</A>
+<LI><A HREF="readline.html#IDX196">username_completion_function</A>
+</DIR>
+<H2><A NAME="v">v</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX25">visible-stats</A>
+</DIR>
+<H2><A NAME="y">y</A></H2>
+<DIR>
+<LI><A HREF="readline.html#IDX70">yank (C-y)</A>
+<LI><A HREF="readline.html#IDX46">yank-last-arg (M-., M-_)</A>
+<LI><A HREF="readline.html#IDX45">yank-nth-arg (M-C-y)</A>
+<LI><A HREF="readline.html#IDX71">yank-pop (M-y)</A>
+</DIR>
+
+</P>
+<P><HR><P>
+This document was generated on 31 December 1998 using the
+<A HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A>
+translator version 1.52.</P>
+</BODY>
+</HTML>
--- /dev/null
+This is Info file readline.info, produced by Makeinfo version 1.67 from
+the input file /usr/homes/chet/src/bash/readline-src/doc/rlman.texinfo.
+
+INFO-DIR-SECTION Libraries
+START-INFO-DIR-ENTRY
+* Readline: (readline). The GNU readline library API
+END-INFO-DIR-ENTRY
+
+ This document describes the GNU Readline Library, a utility which
+aids in the consistency of user interface across discrete programs that
+need to provide a command line interface.
+
+ Copyright (C) 1988-1999 Free Software Foundation, Inc.
+
+ Permission is granted to make and distribute verbatim copies of this
+manual provided the copyright notice and this permission notice pare
+preserved on all copies.
+
+ Permission is granted to copy and distribute modified versions of
+this manual under the conditions for verbatim copying, provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+ Permission is granted to copy and distribute translations of this
+manual into another language, under the above conditions for modified
+versions, except that this permission notice may be stated in a
+translation approved by the Free Software Foundation.
+
+\1f
+File: readline.info, Node: Top, Next: Command Line Editing, Up: (dir)
+
+GNU Readline Library
+********************
+
+ This document describes the GNU Readline Library, a utility which
+aids in the consistency of user interface across discrete programs that
+need to provide a command line interface.
+
+* Menu:
+
+* Command Line Editing:: GNU Readline User's Manual.
+* Programming with GNU Readline:: GNU Readline Programmer's Manual.
+* Concept Index:: Index of concepts described in this manual.
+* Function and Variable Index:: Index of externally visible functions
+ and variables.
+
+\1f
+File: readline.info, Node: Command Line Editing, Next: Programming with GNU Readline, Prev: Top, Up: Top
+
+Command Line Editing
+********************
+
+ This chapter describes the basic features of the GNU command line
+editing interface.
+
+* Menu:
+
+* Introduction and Notation:: Notation used in this text.
+* Readline Interaction:: The minimum set of commands for editing a line.
+* Readline Init File:: Customizing Readline from a user's view.
+* Bindable Readline Commands:: A description of most of the Readline commands
+ available for binding
+* Readline vi Mode:: A short description of how to make Readline
+ behave like the vi editor.
+
+\1f
+File: readline.info, Node: Introduction and Notation, Next: Readline Interaction, Up: Command Line Editing
+
+Introduction to Line Editing
+============================
+
+ The following paragraphs describe the notation used to represent
+keystrokes.
+
+ The text <C-k> is read as `Control-K' and describes the character
+produced when the <k> key is pressed while the Control key is depressed.
+
+ The text <M-k> is read as `Meta-K' and describes the character
+produced when the meta key (if you have one) is depressed, and the <k>
+key is pressed. If you do not have a meta key, the identical keystroke
+can be generated by typing <ESC> first, and then typing <k>. Either
+process is known as "metafying" the <k> key.
+
+ The text <M-C-k> is read as `Meta-Control-k' and describes the
+character produced by "metafying" <C-k>.
+
+ In addition, several keys have their own names. Specifically,
+<DEL>, <ESC>, <LFD>, <SPC>, <RET>, and <TAB> all stand for themselves
+when seen in this text, or in an init file (*note Readline Init
+File::.).
+
+\1f
+File: readline.info, Node: Readline Interaction, Next: Readline Init File, Prev: Introduction and Notation, Up: Command Line Editing
+
+Readline Interaction
+====================
+
+ Often during an interactive session you type in a long line of text,
+only to notice that the first word on the line is misspelled. The
+Readline library gives you a set of commands for manipulating the text
+as you type it in, allowing you to just fix your typo, and not forcing
+you to retype the majority of the line. Using these editing commands,
+you move the cursor to the place that needs correction, and delete or
+insert the text of the corrections. Then, when you are satisfied with
+the line, you simply press <RETURN>. You do not have to be at the end
+of the line to press <RETURN>; the entire line is accepted regardless
+of the location of the cursor within the line.
+
+* Menu:
+
+* Readline Bare Essentials:: The least you need to know about Readline.
+* Readline Movement Commands:: Moving about the input line.
+* Readline Killing Commands:: How to delete text, and how to get it back!
+* Readline Arguments:: Giving numeric arguments to commands.
+* Searching:: Searching through previous lines.
+
+\1f
+File: readline.info, Node: Readline Bare Essentials, Next: Readline Movement Commands, Up: Readline Interaction
+
+Readline Bare Essentials
+------------------------
+
+ In order to enter characters into the line, simply type them. The
+typed character appears where the cursor was, and then the cursor moves
+one space to the right. If you mistype a character, you can use your
+erase character to back up and delete the mistyped character.
+
+ Sometimes you may miss typing a character that you wanted to type,
+and not notice your error until you have typed several other
+characters. In that case, you can type <C-b> to move the cursor to the
+left, and then correct your mistake. Afterwards, you can move the
+cursor to the right with <C-f>.
+
+ When you add text in the middle of a line, you will notice that
+characters to the right of the cursor are `pushed over' to make room
+for the text that you have inserted. Likewise, when you delete text
+behind the cursor, characters to the right of the cursor are `pulled
+back' to fill in the blank space created by the removal of the text. A
+list of the basic bare essentials for editing the text of an input line
+follows.
+
+<C-b>
+ Move back one character.
+
+<C-f>
+ Move forward one character.
+
+<DEL>
+ Delete the character to the left of the cursor.
+
+<C-d>
+ Delete the character underneath the cursor.
+
+Printing characters
+ Insert the character into the line at the cursor.
+
+<C-_>
+ Undo the last editing command. You can undo all the way back to an
+ empty line.
+
+\1f
+File: readline.info, Node: Readline Movement Commands, Next: Readline Killing Commands, Prev: Readline Bare Essentials, Up: Readline Interaction
+
+Readline Movement Commands
+--------------------------
+
+ The above table describes the most basic possible keystrokes that
+you need in order to do editing of the input line. For your
+convenience, many other commands have been added in addition to <C-b>,
+<C-f>, <C-d>, and <DEL>. Here are some commands for moving more rapidly
+about the line.
+
+<C-a>
+ Move to the start of the line.
+
+<C-e>
+ Move to the end of the line.
+
+<M-f>
+ Move forward a word, where a word is composed of letters and
+ digits.
+
+<M-b>
+ Move backward a word.
+
+<C-l>
+ Clear the screen, reprinting the current line at the top.
+
+ Notice how <C-f> moves forward a character, while <M-f> moves
+forward a word. It is a loose convention that control keystrokes
+operate on characters while meta keystrokes operate on words.
+
+\1f
+File: readline.info, Node: Readline Killing Commands, Next: Readline Arguments, Prev: Readline Movement Commands, Up: Readline Interaction
+
+Readline Killing Commands
+-------------------------
+
+ "Killing" text means to delete the text from the line, but to save
+it away for later use, usually by "yanking" (re-inserting) it back into
+the line. If the description for a command says that it `kills' text,
+then you can be sure that you can get the text back in a different (or
+the same) place later.
+
+ When you use a kill command, the text is saved in a "kill-ring".
+Any number of consecutive kills save all of the killed text together, so
+that when you yank it back, you get it all. The kill ring is not line
+specific; the text that you killed on a previously typed line is
+available to be yanked back later, when you are typing another line.
+
+ Here is the list of commands for killing text.
+
+<C-k>
+ Kill the text from the current cursor position to the end of the
+ line.
+
+<M-d>
+ Kill from the cursor to the end of the current word, or if between
+ words, to the end of the next word.
+
+<M-DEL>
+ Kill from the cursor the start of the previous word, or if between
+ words, to the start of the previous word.
+
+<C-w>
+ Kill from the cursor to the previous whitespace. This is
+ different than <M-DEL> because the word boundaries differ.
+
+ Here is how to "yank" the text back into the line. Yanking means to
+copy the most-recently-killed text from the kill buffer.
+
+<C-y>
+ Yank the most recently killed text back into the buffer at the
+ cursor.
+
+<M-y>
+ Rotate the kill-ring, and yank the new top. You can only do this
+ if the prior command is <C-y> or <M-y>.
+
+\1f
+File: readline.info, Node: Readline Arguments, Next: Searching, Prev: Readline Killing Commands, Up: Readline Interaction
+
+Readline Arguments
+------------------
+
+ You can pass numeric arguments to Readline commands. Sometimes the
+argument acts as a repeat count, other times it is the sign of the
+argument that is significant. If you pass a negative argument to a
+command which normally acts in a forward direction, that command will
+act in a backward direction. For example, to kill text back to the
+start of the line, you might type `M-- C-k'.
+
+ The general way to pass numeric arguments to a command is to type
+meta digits before the command. If the first `digit' typed is a minus
+sign (<->), then the sign of the argument will be negative. Once you
+have typed one meta digit to get the argument started, you can type the
+remainder of the digits, and then the command. For example, to give
+the <C-d> command an argument of 10, you could type `M-1 0 C-d'.
+
+\1f
+File: readline.info, Node: Searching, Prev: Readline Arguments, Up: Readline Interaction
+
+Searching for Commands in the History
+-------------------------------------
+
+ Readline provides commands for searching through the command history
+for lines containing a specified string. There are two search modes:
+INCREMENTAL and NON-INCREMENTAL.
+
+ 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 ISEARCH-TERMINATORS variable are used to terminate an
+incremental search. If that variable has not been assigned a value,
+the <ESC> and <C-J> characters will terminate an incremental search.
+<C-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. To find other matching entries in the
+history list, type <C-s> or <C-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 <RET> will terminate the search and accept the line,
+thereby executing the command from the history list.
+
+ 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.
+
+\1f
+File: readline.info, Node: Readline Init File, Next: Bindable Readline Commands, Prev: Readline Interaction, Up: Command Line Editing
+
+Readline Init File
+==================
+
+ Although the Readline library comes with a set of `emacs'-like
+keybindings installed by default, it is possible to use a different set
+of keybindings. Any user can customize programs that use Readline by
+putting commands in an "inputrc" file in his home directory. The name
+of this file is taken from the value of the environment variable
+`INPUTRC'. If that variable is unset, the default is `~/.inputrc'.
+
+ When a program which uses the Readline library starts up, the init
+file is read, and the key bindings are set.
+
+ In addition, the `C-x C-r' command re-reads this init file, thus
+incorporating any changes that you might have made to it.
+
+* Menu:
+
+* Readline Init File Syntax:: Syntax for the commands in the inputrc file.
+
+* Conditional Init Constructs:: Conditional key bindings in the inputrc file.
+
+* Sample Init File:: An example inputrc file.
+
+\1f
+File: readline.info, Node: Readline Init File Syntax, Next: Conditional Init Constructs, Up: Readline Init File
+
+Readline Init File Syntax
+-------------------------
+
+ There are only a few basic constructs allowed in the Readline init
+file. Blank lines are ignored. Lines beginning with a `#' are
+comments. Lines beginning with a `$' indicate conditional constructs
+(*note Conditional Init Constructs::.). Other lines denote variable
+settings and key bindings.
+
+Variable Settings
+ You can modify the run-time behavior of Readline by altering the
+ values of variables in Readline using the `set' command within the
+ init file. Here is how to change from the default Emacs-like key
+ binding to use `vi' line editing commands:
+
+ set editing-mode vi
+
+ A great deal of run-time behavior is changeable with the following
+ variables.
+
+ `bell-style'
+ Controls what happens when Readline wants to ring the
+ terminal bell. If set to `none', Readline never rings the
+ bell. If set to `visible', Readline uses a visible bell if
+ one is available. If set to `audible' (the default),
+ Readline attempts to ring the terminal's bell.
+
+ `comment-begin'
+ The string to insert at the beginning of the line when the
+ `insert-comment' command is executed. The default value is
+ `"#"'.
+
+ `completion-ignore-case'
+ If set to `on', Readline performs filename matching and
+ completion in a case-insensitive fashion. The default value
+ is `off'.
+
+ `completion-query-items'
+ The number of possible completions that determines when the
+ user is asked whether he wants to see the list of
+ possibilities. If the number of possible completions is
+ greater than this value, Readline will ask the user whether
+ or not he wishes to view them; otherwise, they are simply
+ listed. The default limit is `100'.
+
+ `convert-meta'
+ If set to `on', Readline will convert characters with the
+ eighth bit set to an ASCII key sequence by stripping the
+ eighth bit and prepending an <ESC> character, converting them
+ to a meta-prefixed key sequence. The default value is `on'.
+
+ `disable-completion'
+ If set to `On', Readline will inhibit word completion.
+ Completion characters will be inserted into the line as if
+ they had been mapped to `self-insert'. The default is `off'.
+
+ `editing-mode'
+ The `editing-mode' variable controls which default set of key
+ bindings is used. By default, Readline starts up in Emacs
+ editing mode, where the keystrokes are most similar to Emacs.
+ This variable can be set to either `emacs' or `vi'.
+
+ `enable-keypad'
+ When set to `on', Readline will try to enable the application
+ keypad when it is called. Some systems need this to enable
+ the arrow keys. The default is `off'.
+
+ `expand-tilde'
+ If set to `on', tilde expansion is performed when Readline
+ attempts word completion. The default is `off'.
+
+ `horizontal-scroll-mode'
+ This variable can be set to either `on' or `off'. Setting it
+ to `on' means that the text of the lines being edited will
+ scroll horizontally on a single screen line when they are
+ longer than the width of the screen, instead of wrapping onto
+ a new screen line. By default, this variable is set to `off'.
+
+ `input-meta'
+ If set to `on', Readline will enable eight-bit input (it will
+ not strip the eighth bit from the characters it reads),
+ regardless of what the terminal claims it can support. The
+ default value is `off'. The name `meta-flag' is a synonym
+ for this variable.
+
+ `isearch-terminators'
+ The string of characters that should terminate an incremental
+ search without subsequently executing the character as a
+ command (*note Searching::.). If this variable has not been
+ given a value, the characters <ESC> and <C-J> will terminate
+ an incremental search.
+
+ `keymap'
+ Sets Readline's idea of the current keymap for key binding
+ commands. Acceptable `keymap' names are `emacs',
+ `emacs-standard', `emacs-meta', `emacs-ctlx', `vi',
+ `vi-command', and `vi-insert'. `vi' is equivalent to
+ `vi-command'; `emacs' is equivalent to `emacs-standard'. The
+ default value is `emacs'. The value of the `editing-mode'
+ variable also affects the default keymap.
+
+ `mark-directories'
+ If set to `on', completed directory names have a slash
+ appended. The default is `on'.
+
+ `mark-modified-lines'
+ This variable, when set to `on', causes Readline to display an
+ asterisk (`*') at the start of history lines which have been
+ modified. This variable is `off' by default.
+
+ `output-meta'
+ If set to `on', Readline will display characters with the
+ eighth bit set directly rather than as a meta-prefixed escape
+ sequence. The default is `off'.
+
+ `print-completions-horizontally'
+ If set to `on', Readline will display completions with matches
+ sorted horizontally in alphabetical order, rather than down
+ the screen. The default is `off'.
+
+ `show-all-if-ambiguous'
+ This alters the default behavior of the completion functions.
+ If set to `on', words which have more than one possible
+ completion cause the matches to be listed immediately instead
+ of ringing the bell. The default value is `off'.
+
+ `visible-stats'
+ If set to `on', a character denoting a file's type is
+ appended to the filename when listing possible completions.
+ The default is `off'.
+
+Key Bindings
+ The syntax for controlling key bindings in the init file is
+ simple. First you have to know the name of the command that you
+ want to change. The following sections contain tables of the
+ command name, the default keybinding, if any, and a short
+ description of what the command does.
+
+ Once you know the name of the command, simply place the name of
+ the key you wish to bind the command to, a colon, and then the
+ name of the command on a line in the init file. The name of the
+ key can be expressed in different ways, depending on which is most
+ comfortable for you.
+
+ KEYNAME: FUNCTION-NAME or MACRO
+ KEYNAME is the name of a key spelled out in English. For
+ example:
+ Control-u: universal-argument
+ Meta-Rubout: backward-kill-word
+ Control-o: "> output"
+
+ In the above example, <C-u> is bound to the function
+ `universal-argument', and <C-o> is bound to run the macro
+ expressed on the right hand side (that is, to insert the text
+ `> output' into the line).
+
+ "KEYSEQ": FUNCTION-NAME or MACRO
+ KEYSEQ differs from KEYNAME above in that strings denoting an
+ entire key sequence can be specified, by placing the key
+ sequence in double quotes. Some GNU Emacs style key escapes
+ can be used, as in the following example, but the special
+ character names are not recognized.
+
+ "\C-u": universal-argument
+ "\C-x\C-r": re-read-init-file
+ "\e[11~": "Function Key 1"
+
+ In the above example, <C-u> is bound to the function
+ `universal-argument' (just as it was in the first example),
+ `<C-x> <C-r>' is bound to the function `re-read-init-file',
+ and `<ESC> <[> <1> <1> <~>' is bound to insert the text
+ `Function Key 1'.
+
+ The following GNU Emacs style escape sequences are available when
+ specifying key sequences:
+
+ `\C-'
+ control prefix
+
+ `\M-'
+ meta prefix
+
+ `\e'
+ an escape character
+
+ `\\'
+ backslash
+
+ `\"'
+ <">
+
+ `\''
+ <'>
+
+ In addition to the GNU Emacs style escape sequences, a second set
+ of backslash escapes is available:
+
+ `\a'
+ alert (bell)
+
+ `\b'
+ backspace
+
+ `\d'
+ delete
+
+ `\f'
+ form feed
+
+ `\n'
+ newline
+
+ `\r'
+ carriage return
+
+ `\t'
+ horizontal tab
+
+ `\v'
+ vertical tab
+
+ `\NNN'
+ the character whose ASCII code is the octal value NNN (one to
+ three digits)
+
+ `\xNNN'
+ the character whose ASCII code is the hexadecimal value NNN
+ (one to three digits)
+
+ 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 `''. For example,
+ the following binding will make `C-x \' insert a single `\' into
+ the line:
+ "\C-x\\": "\\"
+
+\1f
+File: readline.info, Node: Conditional Init Constructs, Next: Sample Init File, Prev: Readline Init File Syntax, Up: Readline Init File
+
+Conditional Init Constructs
+---------------------------
+
+ 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.
+
+`$if'
+ The `$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.
+
+ `mode'
+ The `mode=' form of the `$if' directive is used to test
+ whether Readline is in `emacs' or `vi' mode. This may be
+ used in conjunction with the `set keymap' command, for
+ instance, to set bindings in the `emacs-standard' and
+ `emacs-ctlx' keymaps only if Readline is starting out in
+ `emacs' mode.
+
+ `term'
+ The `term=' 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
+ `=' is tested against both the full name of the terminal and
+ the portion of the terminal name before the first `-'. This
+ allows `sun' to match both `sun' and `sun-cmd', for instance.
+
+ `application'
+ The APPLICATION construct is used to include
+ application-specific settings. Each program using the
+ Readline library sets the APPLICATION NAME, and you can test
+ for it. 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 Bash:
+ $if Bash
+ # Quote the current or previous word
+ "\C-xq": "\eb\"\ef\""
+ $endif
+
+`$endif'
+ This command, as seen in the previous example, terminates an `$if'
+ command.
+
+`$else'
+ Commands in this branch of the `$if' directive are executed if the
+ test fails.
+
+`$include'
+ This directive takes a single filename as an argument and reads
+ commands and bindings from that file.
+ $include /etc/inputrc
+
+\1f
+File: readline.info, Node: Sample Init File, Prev: Conditional Init Constructs, Up: Readline Init File
+
+Sample Init File
+----------------
+
+ Here is an example of an inputrc file. This illustrates key
+binding, variable assignment, and conditional syntax.
+
+
+ # This file controls the behaviour of line input editing for
+ # programs that use the Gnu Readline library. Existing programs
+ # include FTP, Bash, and Gdb.
+ #
+ # You can re-read the inputrc file with C-x C-r.
+ # Lines beginning with '#' are comments.
+ #
+ # First, include any systemwide bindings and variable assignments from
+ # /etc/Inputrc
+ $include /etc/Inputrc
+
+ #
+ # Set various bindings for emacs mode.
+
+ set editing-mode emacs
+
+ $if mode=emacs
+
+ Meta-Control-h: backward-kill-word Text after the function name is ignored
+
+ #
+ # Arrow keys in keypad mode
+ #
+ #"\M-OD": backward-char
+ #"\M-OC": forward-char
+ #"\M-OA": previous-history
+ #"\M-OB": next-history
+ #
+ # Arrow keys in ANSI mode
+ #
+ "\M-[D": backward-char
+ "\M-[C": forward-char
+ "\M-[A": previous-history
+ "\M-[B": next-history
+ #
+ # Arrow keys in 8 bit keypad mode
+ #
+ #"\M-\C-OD": backward-char
+ #"\M-\C-OC": forward-char
+ #"\M-\C-OA": previous-history
+ #"\M-\C-OB": next-history
+ #
+ # Arrow keys in 8 bit ANSI mode
+ #
+ #"\M-\C-[D": backward-char
+ #"\M-\C-[C": forward-char
+ #"\M-\C-[A": previous-history
+ #"\M-\C-[B": next-history
+
+ C-q: quoted-insert
+
+ $endif
+
+ # An old-style binding. This happens to be the default.
+ TAB: complete
+
+ # Macros that are convenient for shell interaction
+ $if Bash
+ # edit the path
+ "\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
+ # prepare to type a quoted word -- insert open and close double quotes
+ # and move to just after the open quote
+ "\C-x\"": "\"\"\C-b"
+ # insert a backslash (testing backslash escapes in sequences and macros)
+ "\C-x\\": "\\"
+ # Quote the current or previous word
+ "\C-xq": "\eb\"\ef\""
+ # Add a binding to refresh the line, which is unbound
+ "\C-xr": redraw-current-line
+ # Edit variable on current line.
+ "\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
+ $endif
+
+ # use a visible bell if one is available
+ set bell-style visible
+
+ # don't strip characters to 7 bits when reading
+ set input-meta on
+
+ # allow iso-latin1 characters to be inserted rather than converted to
+ # prefix-meta sequences
+ set convert-meta off
+
+ # display characters with the eighth bit set directly rather than
+ # as meta-prefixed characters
+ set output-meta on
+
+ # if there are more than 150 possible completions for a word, ask the
+ # user if he wants to see all of them
+ set completion-query-items 150
+
+ # For FTP
+ $if Ftp
+ "\C-xg": "get \M-?"
+ "\C-xt": "put \M-?"
+ "\M-.": yank-last-arg
+ $endif
+
+\1f
+File: readline.info, Node: Bindable Readline Commands, Next: Readline vi Mode, Prev: Readline Init File, Up: Command Line Editing
+
+Bindable Readline Commands
+==========================
+
+* Menu:
+
+* Commands For Moving:: Moving about the line.
+* Commands For History:: Getting at previous lines.
+* Commands For Text:: Commands for changing text.
+* Commands For Killing:: Commands for killing and yanking.
+* Numeric Arguments:: Specifying numeric arguments, repeat counts.
+* Commands For Completion:: Getting Readline to do the typing for you.
+* Keyboard Macros:: Saving and re-executing typed characters
+* Miscellaneous Commands:: Other miscellaneous commands.
+
+ This section describes Readline commands that may be bound to key
+sequences.
+
+\1f
+File: readline.info, Node: Commands For Moving, Next: Commands For History, Up: Bindable Readline Commands
+
+Commands For Moving
+-------------------
+
+`beginning-of-line (C-a)'
+ Move to the start of the current line.
+
+`end-of-line (C-e)'
+ Move to the end of the line.
+
+`forward-char (C-f)'
+ Move forward a character.
+
+`backward-char (C-b)'
+ Move back a character.
+
+`forward-word (M-f)'
+ Move forward to the end of the next word. Words are composed of
+ letters and digits.
+
+`backward-word (M-b)'
+ Move back to the start of this, or the previous, word. Words are
+ composed of letters and digits.
+
+`clear-screen (C-l)'
+ Clear the screen and redraw the current line, leaving the current
+ line at the top of the screen.
+
+`redraw-current-line ()'
+ Refresh the current line. By default, this is unbound.
+
+\1f
+File: readline.info, Node: Commands For History, Next: Commands For Text, Prev: Commands For Moving, Up: Bindable Readline Commands
+
+Commands For Manipulating The History
+-------------------------------------
+
+`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. If this line was a history
+ line, then restore the history line to its original state.
+
+`previous-history (C-p)'
+ Move `up' through the history list.
+
+`next-history (C-n)'
+ Move `down' through the history list.
+
+`beginning-of-history (M-<)'
+ Move to the first line in the history.
+
+`end-of-history (M->)'
+ Move to the end of the input history, i.e., the line currently
+ being entered.
+
+`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.
+
+`forward-search-history (C-s)'
+ Search forward starting at the current line and moving `down'
+ through the the history as necessary. This is an incremental
+ search.
+
+`non-incremental-reverse-search-history (M-p)'
+ Search backward starting at the current line and moving `up'
+ through the history as necessary using a non-incremental search
+ for a string supplied by the user.
+
+`non-incremental-forward-search-history (M-n)'
+ Search forward starting at the current line and moving `down'
+ through the the history as necessary using a non-incremental search
+ for a string supplied by the user.
+
+`history-search-forward ()'
+ Search forward through the history for the string of characters
+ between the start of the current line and the current cursor
+ position (the POINT). This is a non-incremental search. By
+ default, this command is unbound.
+
+`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. By default, this command is unbound.
+
+`yank-nth-arg (M-C-y)'
+ Insert the first argument to the previous command (usually the
+ second word on the previous line). With an argument N, insert the
+ Nth word from the previous command (the words in the previous
+ command begin with word 0). A negative argument inserts the Nth
+ word from the end of the previous command.
+
+`yank-last-arg (M-., M-_)'
+ Insert last argument to the previous command (the last word of the
+ previous history entry). With an argument, behave exactly like
+ `yank-nth-arg'. Successive calls to `yank-last-arg' move back
+ through the history list, inserting the last argument of each line
+ in turn.
+
+\1f
+File: readline.info, Node: Commands For Text, Next: Commands For Killing, Prev: Commands For History, Up: Bindable Readline Commands
+
+Commands For Changing Text
+--------------------------
+
+`delete-char (C-d)'
+ Delete the character under the cursor. If the cursor is at the
+ beginning of the line, there are no characters in the line, and
+ the last character typed was not bound to `delete-char', then
+ return `EOF'.
+
+`backward-delete-char (Rubout)'
+ Delete the character behind the cursor. A numeric argument means
+ to kill the characters instead of deleting them.
+
+`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. By default, this is not bound to a key.
+
+`quoted-insert (C-q, C-v)'
+ Add the next character typed to the line verbatim. This is how to
+ insert key sequences like <C-q>, for example.
+
+`tab-insert (M-TAB)'
+ Insert a tab character.
+
+`self-insert (a, b, A, 1, !, ...)'
+ Insert yourself.
+
+`transpose-chars (C-t)'
+ Drag the character before the cursor forward over the character at
+ the cursor, moving the cursor forward as well. If the insertion
+ point is at the end of the line, then this transposes the last two
+ characters of the line. Negative arguments don't work.
+
+`transpose-words (M-t)'
+ Drag the word behind the cursor past the word in front of the
+ cursor moving the cursor over that word as well.
+
+`upcase-word (M-u)'
+ Uppercase the current (or following) word. With a negative
+ argument, uppercase the previous word, but do not move the cursor.
+
+`downcase-word (M-l)'
+ Lowercase the current (or following) word. With a negative
+ argument, lowercase the previous word, but do not move the cursor.
+
+`capitalize-word (M-c)'
+ Capitalize the current (or following) word. With a negative
+ argument, capitalize the previous word, but do not move the cursor.
+
+\1f
+File: readline.info, Node: Commands For Killing, Next: Numeric Arguments, Prev: Commands For Text, Up: Bindable Readline Commands
+
+Killing And Yanking
+-------------------
+
+`kill-line (C-k)'
+ Kill the text from the current cursor position to the end of the
+ line.
+
+`backward-kill-line (C-x Rubout)'
+ Kill backward to the beginning of the line.
+
+`unix-line-discard (C-u)'
+ Kill backward from the cursor to the beginning of the current line.
+ The killed text is saved on the kill-ring.
+
+`kill-whole-line ()'
+ Kill all characters on the current line, no matter where the
+ cursor is. By default, this is unbound.
+
+`kill-word (M-d)'
+ Kill from the cursor to the end of the current word, or if between
+ words, to the end of the next word. Word boundaries are the same
+ as `forward-word'.
+
+`backward-kill-word (M-DEL)'
+ Kill the word behind the cursor. Word boundaries are the same as
+ `backward-word'.
+
+`unix-word-rubout (C-w)'
+ Kill the word behind the cursor, using white space as a word
+ boundary. The killed text is saved on the kill-ring.
+
+`delete-horizontal-space ()'
+ Delete all spaces and tabs around point. By default, this is
+ unbound.
+
+`kill-region ()'
+ Kill the text between the point and the *mark* (saved cursor
+ position). This text is referred to as the REGION. By default,
+ this command is unbound.
+
+`copy-region-as-kill ()'
+ Copy the text in the region to the kill buffer, so it can be yanked
+ right away. By default, this command is unbound.
+
+`copy-backward-word ()'
+ Copy the word before point to the kill buffer. The word
+ boundaries are the same as `backward-word'. By default, this
+ command is unbound.
+
+`copy-forward-word ()'
+ Copy the word following point to the kill buffer. The word
+ boundaries are the same as `forward-word'. By default, this
+ command is unbound.
+
+`yank (C-y)'
+ Yank the top of the kill ring into the buffer at the current
+ cursor position.
+
+`yank-pop (M-y)'
+ Rotate the kill-ring, and yank the new top. You can only do this
+ if the prior command is yank or yank-pop.
+
+\1f
+File: readline.info, Node: Numeric Arguments, Next: Commands For Completion, Prev: Commands For Killing, Up: Bindable Readline Commands
+
+Specifying Numeric Arguments
+----------------------------
+
+`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.
+
+`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 `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. By default, this is not bound to a key.
+
+\1f
+File: readline.info, Node: Commands For Completion, Next: Keyboard Macros, Prev: Numeric Arguments, Up: Bindable Readline Commands
+
+Letting Readline Type For You
+-----------------------------
+
+`complete (TAB)'
+ Attempt to do completion on the text before the cursor. This is
+ application-specific. Generally, if you are typing a filename
+ argument, you can do filename completion; if you are typing a
+ command, you can do command completion; if you are typing in a
+ symbol to GDB, you can do symbol name completion; if you are
+ typing in a variable to Bash, you can do variable name completion,
+ and so on.
+
+`possible-completions (M-?)'
+ List the possible completions of the text before the cursor.
+
+`insert-completions (M-*)'
+ Insert all completions of the text before point that would have
+ been generated by `possible-completions'.
+
+`menu-complete ()'
+ Similar to `complete', but replaces the word to be completed with
+ a single match from the list of possible completions. Repeated
+ execution of `menu-complete' steps through the list of possible
+ completions, inserting each match in turn. At the end of the list
+ of completions, the bell is rung and the original text is restored.
+ An argument of N moves N 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 `TAB', but is unbound by
+ default.
+
+`delete-char-or-list ()'
+ Deletes the character under the cursor if not at the beginning or
+ end of the line (like `delete-char'). If at the end of the line,
+ behaves identically to `possible-completions'. This command is
+ unbound by default.
+
+\1f
+File: readline.info, Node: Keyboard Macros, Next: Miscellaneous Commands, Prev: Commands For Completion, Up: Bindable Readline Commands
+
+Keyboard Macros
+---------------
+
+`start-kbd-macro (C-x ()'
+ Begin saving the characters typed into the current keyboard macro.
+
+`end-kbd-macro (C-x ))'
+ Stop saving the characters typed into the current keyboard macro
+ and save the definition.
+
+`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.
+
+\1f
+File: readline.info, Node: Miscellaneous Commands, Prev: Keyboard Macros, Up: Bindable Readline Commands
+
+Some Miscellaneous Commands
+---------------------------
+
+`re-read-init-file (C-x C-r)'
+ Read in the contents of the inputrc file, and incorporate any
+ bindings or variable assignments found there.
+
+`abort (C-g)'
+ Abort the current editing command and ring the terminal's bell
+ (subject to the setting of `bell-style').
+
+`do-uppercase-version (M-a, M-b, M-X, ...)'
+ If the metafied character X is lowercase, run the command that is
+ bound to the corresponding uppercase character.
+
+`prefix-meta (ESC)'
+ Make the next character typed be metafied. This is for keyboards
+ without a meta key. Typing `ESC f' is equivalent to typing `M-f'.
+
+`undo (C-_, C-x C-u)'
+ Incremental undo, separately remembered for each line.
+
+`revert-line (M-r)'
+ Undo all changes made to this line. This is like executing the
+ `undo' command enough times to get back to the beginning.
+
+`tilde-expand (M-~)'
+ Perform tilde expansion on the current word.
+
+`set-mark (C-@)'
+ Set the mark to the current point. If a numeric argument is
+ supplied, the mark is set to that position.
+
+`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.
+
+`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.
+
+`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.
+
+`insert-comment (M-#)'
+ The value of the `comment-begin' variable is inserted at the
+ beginning of the current line, and the line is accepted as if a
+ newline had been typed.
+
+`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 INPUTRC
+ file. This command is unbound by default.
+
+`dump-variables ()'
+ Print all of the settable 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
+ INPUTRC file. This command is unbound by default.
+
+`dump-macros ()'
+ Print all of the Readline key sequences bound to macros and the
+ strings they ouput. If a numeric argument is supplied, the output
+ is formatted in such a way that it can be made part of an INPUTRC
+ file. This command is unbound by default.
+
+\1f
+File: readline.info, Node: Readline vi Mode, Prev: Bindable Readline Commands, Up: Command Line Editing
+
+Readline vi Mode
+================
+
+ While the Readline library does not have a full set of `vi' editing
+functions, it does contain enough to allow simple editing of the line.
+The Readline `vi' mode behaves as specified in the POSIX 1003.2
+standard.
+
+ In order to switch interactively between `emacs' and `vi' editing
+modes, use the command M-C-j (toggle-editing-mode). The Readline
+default is `emacs' mode.
+
+ When you enter a line in `vi' mode, you are already placed in
+`insertion' mode, as if you had typed an `i'. Pressing <ESC> switches
+you into `command' mode, where you can edit the text of the line with
+the standard `vi' movement keys, move to previous history lines with
+`k' and subsequent lines with `j', and so forth.
+
+ This document describes the GNU Readline Library, a utility for
+aiding in the consitency of user interface across discrete programs
+that need to provide a command line interface.
+
+ Copyright (C) 1988, 1994, 1996, 1998, 1999 Free Software Foundation,
+Inc.
+
+ Permission is granted to make and distribute verbatim copies of this
+manual provided the copyright notice and this permission notice pare
+preserved on all copies.
+
+ Permission is granted to copy and distribute modified versions of
+this manual under the conditions for verbatim copying, provided that
+the entire resulting derived work is distributed under the terms of a
+permission notice identical to this one.
+
+ Permission is granted to copy and distribute translations of this
+manual into another language, under the above conditions for modified
+versions, except that this permission notice may be stated in a
+translation approved by the Foundation.
+
+\1f
+File: readline.info, Node: Programming with GNU Readline, Next: Concept Index, Prev: Command Line Editing, Up: Top
+
+Programming with GNU Readline
+*****************************
+
+ This chapter describes the interface between the GNU Readline
+Library and other programs. If you are a programmer, and you wish to
+include the features found in GNU Readline such as completion, line
+editing, and interactive history manipulation in your own programs,
+this section is for you.
+
+* Menu:
+
+* Basic Behavior:: Using the default behavior of Readline.
+* Custom Functions:: Adding your own functions to Readline.
+* Readline Variables:: Variables accessible to custom
+ functions.
+* Readline Convenience Functions:: Functions which Readline supplies to
+ aid in writing your own custom
+ functions.
+* Readline Signal Handling:: How Readline behaves when it receives signals.
+* Custom Completers:: Supplanting or supplementing Readline's
+ completion functions.
+
+\1f
+File: readline.info, Node: Basic Behavior, Next: Custom Functions, Up: Programming with GNU Readline
+
+Basic Behavior
+==============
+
+ Many programs provide a command line interface, such as `mail',
+`ftp', and `sh'. For such programs, the default behaviour of Readline
+is sufficient. This section describes how to use Readline in the
+simplest way possible, perhaps to replace calls in your code to
+`gets()' or `fgets ()'.
+
+ The function `readline ()' prints a prompt and then reads and returns
+a single line of text from the user. The line `readline' returns is
+allocated with `malloc ()'; you should `free ()' the line when you are
+done with it. The declaration for `readline' in ANSI C is
+
+ `char *readline (char *PROMPT);'
+
+So, one might say
+ `char *line = readline ("Enter a line: ");'
+
+in order to read a line of text from the user. The line returned has
+the final newline removed, so only the text remains.
+
+ If `readline' encounters an `EOF' while reading the line, and the
+line is empty at that point, then `(char *)NULL' is returned.
+Otherwise, the line is ended just as if a newline had been typed.
+
+ If you want the user to be able to get at the line later, (with
+<C-p> for example), you must call `add_history ()' to save the line
+away in a "history" list of such lines.
+
+ `add_history (line)';
+
+For full details on the GNU History Library, see the associated manual.
+
+ It is preferable to avoid saving empty lines on the history list,
+since users rarely have a burning need to reuse a blank line. Here is
+a function which usefully replaces the standard `gets ()' library
+function, and has the advantage of no static buffer to overflow:
+
+ /* A static variable for holding the line. */
+ static char *line_read = (char *)NULL;
+
+ /* Read a string, and return a pointer to it. Returns NULL on EOF. */
+ char *
+ rl_gets ()
+ {
+ /* If the buffer has already been allocated, return the memory
+ to the free pool. */
+ if (line_read)
+ {
+ free (line_read);
+ line_read = (char *)NULL;
+ }
+
+ /* Get a line from the user. */
+ line_read = readline ("");
+
+ /* If the line has any text in it, save it on the history. */
+ if (line_read && *line_read)
+ add_history (line_read);
+
+ return (line_read);
+ }
+
+ This function gives the user the default behaviour of <TAB>
+completion: completion on file names. If you do not want Readline to
+complete on filenames, you can change the binding of the <TAB> key with
+`rl_bind_key ()'.
+
+ `int rl_bind_key (int KEY, int (*FUNCTION)());'
+
+ `rl_bind_key ()' takes two arguments: KEY is the character that you
+want to bind, and FUNCTION is the address of the function to call when
+KEY is pressed. Binding <TAB> to `rl_insert ()' makes <TAB> insert
+itself. `rl_bind_key ()' returns non-zero if KEY is not a valid ASCII
+character code (between 0 and 255).
+
+ Thus, to disable the default <TAB> behavior, the following suffices:
+ `rl_bind_key ('\t', rl_insert);'
+
+ This code should be executed once at the start of your program; you
+might write a function called `initialize_readline ()' which performs
+this and other desired initializations, such as installing custom
+completers (*note Custom Completers::.).
+
+\1f
+File: readline.info, Node: Custom Functions, Next: Readline Variables, Prev: Basic Behavior, Up: Programming with GNU Readline
+
+Custom Functions
+================
+
+ Readline provides many functions for manipulating the text of the
+line, but it isn't possible to anticipate the needs of all programs.
+This section describes the various functions and variables defined
+within the Readline library which allow a user program to add
+customized functionality to Readline.
+
+* Menu:
+
+* The Function Type:: C declarations to make code readable.
+* Function Writing:: Variables and calling conventions.
+
+\1f
+File: readline.info, Node: The Function Type, Next: Function Writing, Up: Custom Functions
+
+The Function Type
+-----------------
+
+ For readabilty, we declare a new type of object, called "Function".
+A `Function' is a C function which returns an `int'. The type
+declaration for `Function' is:
+
+`typedef int Function ();'
+
+ The reason for declaring this new type is to make it easier to write
+code describing pointers to C functions. Let us say we had a variable
+called FUNC which was a pointer to a function. Instead of the classic
+C declaration
+
+ `int (*)()func;'
+
+we may write
+
+ `Function *func;'
+
+Similarly, there are
+
+ typedef void VFunction ();
+ typedef char *CPFunction (); and
+ typedef char **CPPFunction ();
+
+for functions returning no value, `pointer to char', and `pointer to
+pointer to char', respectively.
+
+\1f
+File: readline.info, Node: Function Writing, Prev: The Function Type, Up: Custom Functions
+
+Writing a New Function
+----------------------
+
+ In order to write new functions for Readline, you need to know the
+calling conventions for keyboard-invoked functions, and the names of the
+variables that describe the current state of the line read so far.
+
+ The calling sequence for a command `foo' looks like
+
+ `foo (int count, int key)'
+
+where COUNT is the numeric argument (or 1 if defaulted) and KEY is the
+key that invoked this function.
+
+ It is completely up to the function as to what should be done with
+the numeric argument. Some functions use it as a repeat count, some as
+a flag, and others to choose alternate behavior (refreshing the current
+line as opposed to refreshing the screen, for example). Some choose to
+ignore it. In general, if a function uses the numeric argument as a
+repeat count, it should be able to do something useful with both
+negative and positive arguments. At the very least, it should be aware
+that it can be passed a negative argument.
+
+\1f
+File: readline.info, Node: Readline Variables, Next: Readline Convenience Functions, Prev: Custom Functions, Up: Programming with GNU Readline
+
+Readline Variables
+==================
+
+ These variables are available to function writers.
+
+ - Variable: char * rl_line_buffer
+ This is the line gathered so far. You are welcome to modify the
+ contents of the line, but see *Note Allowing Undoing::.
+
+ - Variable: int rl_point
+ The offset of the current cursor position in `rl_line_buffer' (the
+ *point*).
+
+ - Variable: int rl_end
+ The number of characters present in `rl_line_buffer'. When
+ `rl_point' is at the end of the line, `rl_point' and `rl_end' are
+ equal.
+
+ - Variable: int rl_mark
+ The mark (saved position) in the current line. If set, the mark
+ and point define a *region*.
+
+ - Variable: int rl_done
+ Setting this to a non-zero value causes Readline to return the
+ current line immediately.
+
+ - Variable: int rl_pending_input
+ Setting this to a value makes it the next keystroke read. This is
+ a way to stuff a single character into the input stream.
+
+ - Variable: int rl_erase_empty_line
+ Setting this to a non-zero value causes Readline to completely
+ erase the current line, including any prompt, any time a newline
+ is typed as the only character on an otherwise-empty line. The
+ cursor is moved to the beginning of the newly-blank line.
+
+ - Variable: char * rl_prompt
+ The prompt Readline uses. This is set from the argument to
+ `readline ()', and should not be assigned to directly.
+
+ - Variable: char * rl_library_version
+ The version number of this revision of the library.
+
+ - Variable: char * rl_terminal_name
+ The terminal type, used for initialization.
+
+ - Variable: char * rl_readline_name
+ This variable is set to a unique name by each application using
+ Readline. The value allows conditional parsing of the inputrc file
+ (*note Conditional Init Constructs::.).
+
+ - Variable: FILE * rl_instream
+ The stdio stream from which Readline reads input.
+
+ - Variable: FILE * rl_outstream
+ The stdio stream to which Readline performs output.
+
+ - Variable: Function * rl_startup_hook
+ If non-zero, this is the address of a function to call just before
+ `readline' prints the first prompt.
+
+ - Variable: Function * rl_pre_input_hook
+ If non-zero, this is the address of a function to call after the
+ first prompt has been printed and just before `readline' starts
+ reading input characters.
+
+ - Variable: Function * rl_event_hook
+ If non-zero, this is the address of a function to call periodically
+ when readline is waiting for terminal input.
+
+ - Variable: Function * rl_getc_function
+ If non-zero, `readline' will call indirectly through this pointer
+ to get a character from the input stream. By default, it is set to
+ `rl_getc', the default `readline' character input function (*note
+ Utility Functions::.).
+
+ - Variable: VFunction * rl_redisplay_function
+ If non-zero, `readline' will call indirectly through this pointer
+ to update the display with the current contents of the editing
+ buffer. By default, it is set to `rl_redisplay', the default
+ `readline' redisplay function (*note Redisplay::.).
+
+ - Variable: Keymap rl_executing_keymap
+ This variable is set to the keymap (*note Keymaps::.) in which the
+ currently executing readline function was found.
+
+ - Variable: Keymap rl_binding_keymap
+ This variable is set to the keymap (*note Keymaps::.) in which the
+ last key binding occurred.
+
+\1f
+File: readline.info, Node: Readline Convenience Functions, Next: Readline Signal Handling, Prev: Readline Variables, Up: Programming with GNU Readline
+
+Readline Convenience Functions
+==============================
+
+* Menu:
+
+* Function Naming:: How to give a function you write a name.
+* Keymaps:: Making keymaps.
+* Binding Keys:: Changing Keymaps.
+* Associating Function Names and Bindings:: Translate function names to
+ key sequences.
+* Allowing Undoing:: How to make your functions undoable.
+* Redisplay:: Functions to control line display.
+* Modifying Text:: Functions to modify `rl_line_buffer'.
+* Utility Functions:: Generally useful functions and hooks.
+* Alternate Interface:: Using Readline in a `callback' fashion.
+
+\1f
+File: readline.info, Node: Function Naming, Next: Keymaps, Up: Readline Convenience Functions
+
+Naming a Function
+-----------------
+
+ The user can dynamically change the bindings of keys while using
+Readline. This is done by representing the function with a descriptive
+name. The user is able to type the descriptive name when referring to
+the function. Thus, in an init file, one might find
+
+ Meta-Rubout: backward-kill-word
+
+ This binds the keystroke <Meta-Rubout> to the function
+*descriptively* named `backward-kill-word'. You, as the programmer,
+should bind the functions you write to descriptive names as well.
+Readline provides a function for doing that:
+
+ - Function: int rl_add_defun (char *name, Function *function, int key)
+ Add NAME to the list of named functions. Make FUNCTION be the
+ function that gets called. If KEY is not -1, then bind it to
+ FUNCTION using `rl_bind_key ()'.
+
+ Using this function alone is sufficient for most applications. It is
+the recommended way to add a few functions to the default functions that
+Readline has built in. If you need to do something other than adding a
+function to Readline, you may need to use the underlying functions
+described below.
+
+\1f
+File: readline.info, Node: Keymaps, Next: Binding Keys, Prev: Function Naming, Up: Readline Convenience Functions
+
+Selecting a Keymap
+------------------
+
+ Key bindings take place on a "keymap". The keymap is the
+association between the keys that the user types and the functions that
+get run. You can make your own keymaps, copy existing keymaps, and tell
+Readline which keymap to use.
+
+ - Function: Keymap rl_make_bare_keymap ()
+ Returns a new, empty keymap. The space for the keymap is
+ allocated with `malloc ()'; you should `free ()' it when you are
+ done.
+
+ - Function: Keymap rl_copy_keymap (Keymap map)
+ Return a new keymap which is a copy of MAP.
+
+ - Function: Keymap rl_make_keymap ()
+ Return a new keymap with the printing characters bound to
+ rl_insert, the lowercase Meta characters bound to run their
+ equivalents, and the Meta digits bound to produce numeric
+ arguments.
+
+ - Function: void rl_discard_keymap (Keymap keymap)
+ Free the storage associated with KEYMAP.
+
+ Readline has several internal keymaps. These functions allow you to
+change which keymap is active.
+
+ - Function: Keymap rl_get_keymap ()
+ Returns the currently active keymap.
+
+ - Function: void rl_set_keymap (Keymap keymap)
+ Makes KEYMAP the currently active keymap.
+
+ - Function: Keymap rl_get_keymap_by_name (char *name)
+ Return the keymap matching NAME. NAME is one which would be
+ supplied in a `set keymap' inputrc line (*note Readline Init
+ File::.).
+
+ - Function: char * rl_get_keymap_name (Keymap keymap)
+ Return the name matching KEYMAP. NAME is one which would be
+ supplied in a `set keymap' inputrc line (*note Readline Init
+ File::.).
+
+\1f
+File: readline.info, Node: Binding Keys, Next: Associating Function Names and Bindings, Prev: Keymaps, Up: Readline Convenience Functions
+
+Binding Keys
+------------
+
+ You associate keys with functions through the keymap. Readline has
+several internal keymaps: `emacs_standard_keymap', `emacs_meta_keymap',
+`emacs_ctlx_keymap', `vi_movement_keymap', and `vi_insertion_keymap'.
+`emacs_standard_keymap' is the default, and the examples in this manual
+assume that.
+
+ These functions manage key bindings.
+
+ - Function: int rl_bind_key (int key, Function *function)
+ Binds KEY to FUNCTION in the currently active keymap. Returns
+ non-zero in the case of an invalid KEY.
+
+ - Function: int rl_bind_key_in_map (int key, Function *function,
+ Keymap map)
+ Bind KEY to FUNCTION in MAP. Returns non-zero in the case of an
+ invalid KEY.
+
+ - Function: int rl_unbind_key (int key)
+ Bind KEY to the null function in the currently active keymap.
+ Returns non-zero in case of error.
+
+ - Function: int rl_unbind_key_in_map (int key, Keymap map)
+ Bind KEY to the null function in MAP. Returns non-zero in case of
+ error.
+
+ - Function: int rl_unbind_function_in_map (Function *function, Keymap
+ map)
+ Unbind all keys that execute FUNCTION in MAP.
+
+ - Function: int rl_unbind_command_in_map (char *command, Keymap map)
+ Unbind all keys that are bound to COMMAND in MAP.
+
+ - Function: int rl_generic_bind (int type, char *keyseq, char *data,
+ Keymap map)
+ Bind the key sequence represented by the string KEYSEQ to the
+ arbitrary pointer DATA. TYPE says what kind of data is pointed to
+ by DATA; this can be a function (`ISFUNC'), a macro (`ISMACR'), or
+ a keymap (`ISKMAP'). This makes new keymaps as necessary. The
+ initial keymap in which to do bindings is MAP.
+
+ - Function: int rl_parse_and_bind (char *line)
+ Parse LINE as if it had been read from the `inputrc' file and
+ perform any key bindings and variable assignments found (*note
+ Readline Init File::.).
+
+ - Function: int rl_read_init_file (char *filename)
+ Read keybindings and variable assignments from FILENAME (*note
+ Readline Init File::.).
+
+\1f
+File: readline.info, Node: Associating Function Names and Bindings, Next: Allowing Undoing, Prev: Binding Keys, Up: Readline Convenience Functions
+
+Associating Function Names and Bindings
+---------------------------------------
+
+ These functions allow you to find out what keys invoke named
+functions and the functions invoked by a particular key sequence.
+
+ - Function: Function * rl_named_function (char *name)
+ Return the function with name NAME.
+
+ - Function: Function * rl_function_of_keyseq (char *keyseq, Keymap
+ map, int *type)
+ Return the function invoked by KEYSEQ in keymap MAP. If MAP is
+ NULL, the current keymap is used. If TYPE is not NULL, the type
+ of the object is returned in it (one of `ISFUNC', `ISKMAP', or
+ `ISMACR').
+
+ - Function: char ** rl_invoking_keyseqs (Function *function)
+ Return an array of strings representing the key sequences used to
+ invoke FUNCTION in the current keymap.
+
+ - Function: char ** rl_invoking_keyseqs_in_map (Function *function,
+ Keymap map)
+ Return an array of strings representing the key sequences used to
+ invoke FUNCTION in the keymap MAP.
+
+ - Function: void rl_function_dumper (int readable)
+ Print the readline function names and the key sequences currently
+ bound to them to `rl_outstream'. If READABLE is non-zero, the
+ list is formatted in such a way that it can be made part of an
+ `inputrc' file and re-read.
+
+ - Function: void rl_list_funmap_names ()
+ Print the names of all bindable Readline functions to
+ `rl_outstream'.
+
+\1f
+File: readline.info, Node: Allowing Undoing, Next: Redisplay, Prev: Associating Function Names and Bindings, Up: Readline Convenience Functions
+
+Allowing Undoing
+----------------
+
+ Supporting the undo command is a painless thing, and makes your
+functions much more useful. It is certainly easy to try something if
+you know you can undo it. I could use an undo function for the stock
+market.
+
+ If your function simply inserts text once, or deletes text once, and
+uses `rl_insert_text ()' or `rl_delete_text ()' to do it, then undoing
+is already done for you automatically.
+
+ If you do multiple insertions or multiple deletions, or any
+combination of these operations, you should group them together into
+one operation. This is done with `rl_begin_undo_group ()' and
+`rl_end_undo_group ()'.
+
+ The types of events that can be undone are:
+
+ enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
+
+ Notice that `UNDO_DELETE' means to insert some text, and
+`UNDO_INSERT' means to delete some text. That is, the undo code tells
+undo what to undo, not how to undo it. `UNDO_BEGIN' and `UNDO_END' are
+tags added by `rl_begin_undo_group ()' and `rl_end_undo_group ()'.
+
+ - Function: int rl_begin_undo_group ()
+ Begins saving undo information in a group construct. The undo
+ information usually comes from calls to `rl_insert_text ()' and
+ `rl_delete_text ()', but could be the result of calls to
+ `rl_add_undo ()'.
+
+ - Function: int rl_end_undo_group ()
+ Closes the current undo group started with `rl_begin_undo_group
+ ()'. There should be one call to `rl_end_undo_group ()' for each
+ call to `rl_begin_undo_group ()'.
+
+ - Function: void rl_add_undo (enum undo_code what, int start, int end,
+ char *text)
+ Remember how to undo an event (according to WHAT). The affected
+ text runs from START to END, and encompasses TEXT.
+
+ - Function: void free_undo_list ()
+ Free the existing undo list.
+
+ - Function: int rl_do_undo ()
+ Undo the first thing on the undo list. Returns `0' if there was
+ nothing to undo, non-zero if something was undone.
+
+ Finally, if you neither insert nor delete text, but directly modify
+the existing text (e.g., change its case), call `rl_modifying ()' once,
+just before you modify the text. You must supply the indices of the
+text range that you are going to modify.
+
+ - Function: int rl_modifying (int start, int end)
+ Tell Readline to save the text between START and END as a single
+ undo unit. It is assumed that you will subsequently modify that
+ text.
+
+\1f
+File: readline.info, Node: Redisplay, Next: Modifying Text, Prev: Allowing Undoing, Up: Readline Convenience Functions
+
+Redisplay
+---------
+
+ - Function: void rl_redisplay ()
+ Change what's displayed on the screen to reflect the current
+ contents of `rl_line_buffer'.
+
+ - Function: int rl_forced_update_display ()
+ Force the line to be updated and redisplayed, whether or not
+ Readline thinks the screen display is correct.
+
+ - Function: int rl_on_new_line ()
+ Tell the update routines that we have moved onto a new (empty)
+ line, usually after ouputting a newline.
+
+ - Function: int rl_reset_line_state ()
+ Reset the display state to a clean state and redisplay the current
+ line starting on a new line.
+
+ - Function: int rl_message (va_alist)
+ The arguments are a string as would be supplied to `printf'. The
+ resulting string is displayed in the "echo area". The echo area
+ is also used to display numeric arguments and search strings.
+
+ - Function: int rl_clear_message ()
+ Clear the message in the echo area.
+
+ - Function: void rl_save_prompt ()
+ Save the local Readline prompt display state in preparation for
+ displaying a new message in the message area with `rl_message'.
+
+ - Function: void rl_restore_prompt ()
+ Restore the local Readline prompt display state saved by the most
+ recent call to `rl_save_prompt'.
+
+\1f
+File: readline.info, Node: Modifying Text, Next: Utility Functions, Prev: Redisplay, Up: Readline Convenience Functions
+
+Modifying Text
+--------------
+
+ - Function: int rl_insert_text (char *text)
+ Insert TEXT into the line at the current cursor position.
+
+ - Function: int rl_delete_text (int start, int end)
+ Delete the text between START and END in the current line.
+
+ - Function: char * rl_copy_text (int start, int end)
+ Return a copy of the text between START and END in the current
+ line.
+
+ - Function: int rl_kill_text (int start, int end)
+ Copy the text between START and END in the current line to the
+ kill ring, appending or prepending to the last kill if the last
+ command was a kill command. The text is deleted. If START is
+ less than END, the text is appended, otherwise prepended. If the
+ last command was not a kill, a new kill ring slot is used.
+
+\1f
+File: readline.info, Node: Utility Functions, Next: Alternate Interface, Prev: Modifying Text, Up: Readline Convenience Functions
+
+Utility Functions
+-----------------
+
+ - Function: int rl_read_key ()
+ Return the next character available. This handles input inserted
+ into the input stream via PENDING INPUT (*note Readline
+ Variables::.) and `rl_stuff_char ()', macros, and characters read
+ from the keyboard.
+
+ - Function: int rl_getc (FILE *)
+ Return the next character available from the keyboard.
+
+ - Function: int rl_stuff_char (int c)
+ Insert C into the Readline input stream. It will be "read" before
+ Readline attempts to read characters from the terminal with
+ `rl_read_key ()'.
+
+ - Function: rl_extend_line_buffer (int len)
+ Ensure that `rl_line_buffer' has enough space to hold LEN
+ characters, possibly reallocating it if necessary.
+
+ - Function: int rl_initialize ()
+ Initialize or re-initialize Readline's internal state.
+
+ - Function: int rl_reset_terminal (char *terminal_name)
+ Reinitialize Readline's idea of the terminal settings using
+ TERMINAL_NAME as the terminal type (e.g., `vt100').
+
+ - Function: int alphabetic (int c)
+ Return 1 if C is an alphabetic character.
+
+ - Function: int numeric (int c)
+ Return 1 if C is a numeric character.
+
+ - Function: int ding ()
+ Ring the terminal bell, obeying the setting of `bell-style'.
+
+ - Function: void rl_display_match_list (char **matches, int len, int
+ max)
+ A convenience function for displaying a list of strings in
+ columnar format on Readline's output stream. `matches' is the list
+ of strings, in argv format, such as a list of completion matches.
+ `len' is the number of strings in `matches', and `max' is the
+ length of the longest string in `matches'. This function uses the
+ setting of `print-completions-horizontally' to select how the
+ matches are displayed (*note Readline Init File Syntax::.).
+
+ The following are implemented as macros, defined in `chartypes.h'.
+
+ - Function: int uppercase_p (int c)
+ Return 1 if C is an uppercase alphabetic character.
+
+ - Function: int lowercase_p (int c)
+ Return 1 if C is a lowercase alphabetic character.
+
+ - Function: int digit_p (int c)
+ Return 1 if C is a numeric character.
+
+ - Function: int to_upper (int c)
+ If C is a lowercase alphabetic character, return the corresponding
+ uppercase character.
+
+ - Function: int to_lower (int c)
+ If C is an uppercase alphabetic character, return the corresponding
+ lowercase character.
+
+ - Function: int digit_value (int c)
+ If C is a number, return the value it represents.
+
+\1f
+File: readline.info, Node: Alternate Interface, Prev: Utility Functions, Up: Readline Convenience Functions
+
+Alternate Interface
+-------------------
+
+ An alternate interface is available to plain `readline()'. Some
+applications need to interleave keyboard I/O with file, device, or
+window system I/O, typically by using a main loop to `select()' on
+various file descriptors. To accomodate this need, readline can also
+be invoked as a `callback' function from an event loop. There are
+functions available to make this easy.
+
+ - Function: void rl_callback_handler_install (char *prompt, Vfunction
+ *lhandler)
+ Set up the terminal for readline I/O and display the initial
+ expanded value of PROMPT. Save the value of LHANDLER to use as a
+ callback when a complete line of input has been entered.
+
+ - Function: void rl_callback_read_char ()
+ Whenever an application determines that keyboard input is
+ available, it should call `rl_callback_read_char()', which will
+ read the next character from the current input source. If that
+ character completes the line, `rl_callback_read_char' will invoke
+ the LHANDLER function saved by `rl_callback_handler_install' to
+ process the line. `EOF' is indicated by calling LHANDLER with a
+ `NULL' line.
+
+ - Function: void rl_callback_handler_remove ()
+ Restore the terminal to its initial state and remove the line
+ handler. This may be called from within a callback as well as
+ independently.
+
+An Example
+----------
+
+ Here is a function which changes lowercase characters to their
+uppercase equivalents, and uppercase characters to lowercase. If this
+function was bound to `M-c', then typing `M-c' would change the case of
+the character under point. Typing `M-1 0 M-c' would change the case of
+the following 10 characters, leaving the cursor on the last character
+changed.
+
+ /* Invert the case of the COUNT following characters. */
+ int
+ invert_case_line (count, key)
+ int count, key;
+ {
+ register int start, end, i;
+
+ start = rl_point;
+
+ if (rl_point >= rl_end)
+ return (0);
+
+ if (count < 0)
+ {
+ direction = -1;
+ count = -count;
+ }
+ else
+ direction = 1;
+
+ /* Find the end of the range to modify. */
+ end = start + (count * direction);
+
+ /* Force it to be within range. */
+ if (end > rl_end)
+ end = rl_end;
+ else if (end < 0)
+ end = 0;
+
+ if (start == end)
+ return (0);
+
+ if (start > end)
+ {
+ int temp = start;
+ start = end;
+ end = temp;
+ }
+
+ /* Tell readline that we are modifying the line, so it will save
+ the undo information. */
+ rl_modifying (start, end);
+
+ for (i = start; i != end; i++)
+ {
+ if (uppercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_lower (rl_line_buffer[i]);
+ else if (lowercase_p (rl_line_buffer[i]))
+ rl_line_buffer[i] = to_upper (rl_line_buffer[i]);
+ }
+ /* Move point to on top of the last character changed. */
+ rl_point = (direction == 1) ? end - 1 : start;
+ return (0);
+ }
+
+\1f
+File: readline.info, Node: Readline Signal Handling, Next: Custom Completers, Prev: Readline Convenience Functions, Up: Programming with GNU Readline
+
+Readline Signal Handling
+========================
+
+ Signals are asynchronous events sent to a process by the Unix kernel,
+sometimes on behalf of another process. They are intended to indicate
+exceptional events, like a user pressing the interrupt key on his
+terminal, or a network connection being broken. There is a class of
+signals that can be sent to the process currently reading input from
+the keyboard. Since Readline changes the terminal attributes when it
+is called, it needs to perform special processing when a signal is
+received to restore the terminal to a sane state, or provide application
+writers with functions to do so manually.
+
+ Readline contains an internal signal handler that is installed for a
+number of signals (`SIGINT', `SIGQUIT', `SIGTERM', `SIGALRM',
+`SIGTSTP', `SIGTTIN', and `SIGTTOU'). When one of these signals is
+received, the signal handler will reset the terminal attributes to
+those that were in effect before `readline ()' was called, reset the
+signal handling to what it was before `readline ()' was called, and
+resend the signal to the calling application. If and when the calling
+application's signal handler returns, Readline will reinitialize the
+terminal and continue to accept input. When a `SIGINT' is received,
+the Readline signal handler performs some additional work, which will
+cause any partially-entered line to be aborted (see the description of
+`rl_free_line_state ()').
+
+ There is an additional Readline signal handler, for `SIGWINCH', which
+the kernel sends to a process whenever the terminal's size changes (for
+example, if a user resizes an `xterm'). The Readline `SIGWINCH'
+handler updates Readline's internal screen size state, and then calls
+any `SIGWINCH' signal handler the calling application has installed.
+Readline calls the application's `SIGWINCH' signal handler without
+resetting the terminal to its original state. If the application's
+signal handler does more than update its idea of the terminal size and
+return (for example, a `longjmp' back to a main processing loop), it
+*must* call `rl_cleanup_after_signal ()' (described below), to restore
+the terminal state.
+
+ Readline provides two variables that allow application writers to
+control whether or not it will catch certain signals and act on them
+when they are received. It is important that applications change the
+values of these variables only when calling `readline ()', not in a
+signal handler, so Readline's internal signal state is not corrupted.
+
+ - Variable: int rl_catch_signals
+ If this variable is non-zero, Readline will install signal
+ handlers for `SIGINT', `SIGQUIT', `SIGTERM', `SIGALRM', `SIGTSTP',
+ `SIGTTIN', and `SIGTTOU'.
+
+ The default value of `rl_catch_signals' is 1.
+
+ - Variable: int rl_catch_sigwinch
+ If this variable is non-zero, Readline will install a signal
+ handler for `SIGWINCH'.
+
+ The default value of `rl_catch_sigwinch' is 1.
+
+ If an application does not wish to have Readline catch any signals,
+or to handle signals other than those Readline catches (`SIGHUP', for
+example), Readline provides convenience functions to do the necessary
+terminal and internal state cleanup upon receipt of a signal.
+
+ - Function: void rl_cleanup_after_signal (void)
+ This function will reset the state of the terminal to what it was
+ before `readline ()' was called, and remove the Readline signal
+ handlers for all signals, depending on the values of
+ `rl_catch_signals' and `rl_catch_sigwinch'.
+
+ - Function: void rl_free_line_state (void)
+ This will free any partial state associated with the current input
+ line (undo information, any partial history entry, any
+ partially-entered keyboard macro, and any partially-entered
+ numeric argument). This should be called before
+ `rl_cleanup_after_signal ()'. The Readline signal handler for
+ `SIGINT' calls this to abort the current input line.
+
+ - Function: void rl_reset_after_signal (void)
+ This will reinitialize the terminal and reinstall any Readline
+ signal handlers, depending on the values of `rl_catch_signals' and
+ `rl_catch_sigwinch'.
+
+ If an application does not wish Readline to catch `SIGWINCH', it may
+call `rl_resize_terminal ()' to force Readline to update its idea of
+the terminal size when a `SIGWINCH' is received.
+
+ - Function: void rl_resize_terminal (void)
+ Update Readline's internal screen size.
+
+ The following functions install and remove Readline's signal
+handlers.
+
+ - Function: int rl_set_signals (void)
+ Install Readline's signal handler for `SIGINT', `SIGQUIT',
+ `SIGTERM', `SIGALRM', `SIGTSTP', `SIGTTIN', `SIGTTOU', and
+ `SIGWINCH', depending on the values of `rl_catch_signals' and
+ `rl_catch_sigwinch'.
+
+ - Function: int rl_clear_signals (void)
+ Remove all of the Readline signal handlers installed by
+ `rl_set_signals ()'.
+
+\1f
+File: readline.info, Node: Custom Completers, Prev: Readline Signal Handling, Up: Programming with GNU Readline
+
+Custom Completers
+=================
+
+ Typically, a program that reads commands from the user has a way of
+disambiguating commands and data. If your program is one of these, then
+it can provide completion for commands, data, or both. The following
+sections describe how your program and Readline cooperate to provide
+this service.
+
+* Menu:
+
+* How Completing Works:: The logic used to do completion.
+* Completion Functions:: Functions provided by Readline.
+* Completion Variables:: Variables which control completion.
+* A Short Completion Example:: An example of writing completer subroutines.
+
+\1f
+File: readline.info, Node: How Completing Works, Next: Completion Functions, Up: Custom Completers
+
+How Completing Works
+--------------------
+
+ In order to complete some text, the full list of possible completions
+must be available. That is, it is not possible to accurately expand a
+partial word without knowing all of the possible words which make sense
+in that context. The Readline library provides the user interface to
+completion, and two of the most common completion functions: filename
+and username. For completing other types of text, you must write your
+own completion function. This section describes exactly what such
+functions must do, and provides an example.
+
+ There are three major functions used to perform completion:
+
+ 1. The user-interface function `rl_complete ()'. This function is
+ called with the same arguments as other Readline functions
+ intended for interactive use: COUNT and INVOKING_KEY. It
+ isolates the word to be completed and calls `completion_matches
+ ()' to generate a list of possible completions. It then either
+ lists the possible completions, inserts the possible completions,
+ or actually performs the completion, depending on which behavior
+ is desired.
+
+ 2. The internal function `completion_matches ()' uses your
+ "generator" function to generate the list of possible matches, and
+ then returns the array of these matches. You should place the
+ address of your generator function in
+ `rl_completion_entry_function'.
+
+ 3. The generator function is called repeatedly from
+ `completion_matches ()', returning a string each time. The
+ arguments to the generator function are TEXT and STATE. TEXT is
+ the partial word to be completed. STATE is zero the first time
+ the function is called, allowing the generator to perform any
+ necessary initialization, and a positive non-zero integer for each
+ subsequent call. When the generator function returns `(char
+ *)NULL' this signals `completion_matches ()' that there are no
+ more possibilities left. Usually the generator function computes
+ the list of possible completions when STATE is zero, and returns
+ them one at a time on subsequent calls. Each string the generator
+ function returns as a match must be allocated with `malloc()';
+ Readline frees the strings when it has finished with them.
+
+
+ - Function: int rl_complete (int ignore, int invoking_key)
+ Complete the word at or before point. You have supplied the
+ function that does the initial simple matching selection algorithm
+ (see `completion_matches ()'). The default is to do filename
+ completion.
+
+ - Variable: Function * rl_completion_entry_function
+ This is a pointer to the generator function for `completion_matches
+ ()'. If the value of `rl_completion_entry_function' is `(Function
+ *)NULL' then the default filename generator function,
+ `filename_completion_function ()', is used.
+
+\1f
+File: readline.info, Node: Completion Functions, Next: Completion Variables, Prev: How Completing Works, Up: Custom Completers
+
+Completion Functions
+--------------------
+
+ Here is the complete list of callable completion functions present in
+Readline.
+
+ - Function: int rl_complete_internal (int what_to_do)
+ Complete the word at or before point. WHAT_TO_DO says what to do
+ with the completion. A value of `?' means list the possible
+ completions. `TAB' means do standard completion. `*' means
+ insert all of the possible completions. `!' means to display all
+ of the possible completions, if there is more than one, as well as
+ performing partial completion.
+
+ - Function: int rl_complete (int ignore, int invoking_key)
+ Complete the word at or before point. You have supplied the
+ function that does the initial simple matching selection algorithm
+ (see `completion_matches ()' and `rl_completion_entry_function').
+ The default is to do filename completion. This calls
+ `rl_complete_internal ()' with an argument depending on
+ INVOKING_KEY.
+
+ - Function: int rl_possible_completions (int count, int invoking_key))
+ List the possible completions. See description of `rl_complete
+ ()'. This calls `rl_complete_internal ()' with an argument of `?'.
+
+ - Function: int rl_insert_completions (int count, int invoking_key))
+ Insert the list of possible completions into the line, deleting the
+ partially-completed word. See description of `rl_complete ()'.
+ This calls `rl_complete_internal ()' with an argument of `*'.
+
+ - Function: char ** completion_matches (char *text, CPFunction
+ *entry_func)
+ Returns an array of `(char *)' which is a list of completions for
+ TEXT. If there are no completions, returns `(char **)NULL'. The
+ first entry in the returned array is the substitution for TEXT.
+ The remaining entries are the possible completions. The array is
+ terminated with a `NULL' pointer.
+
+ ENTRY_FUNC is a function of two args, and returns a `(char *)'.
+ The first argument is TEXT. The second is a state argument; it is
+ zero on the first call, and non-zero on subsequent calls.
+ ENTRY_FUNC returns a `NULL' pointer to the caller when there are
+ no more matches.
+
+ - Function: char * filename_completion_function (char *text, int state)
+ A generator function for filename completion in the general case.
+ Note that completion in Bash is a little different because of all
+ the pathnames that must be followed when looking up completions
+ for a command. The Bash source is a useful reference for writing
+ custom completion functions.
+
+ - Function: char * username_completion_function (char *text, int state)
+ A completion generator for usernames. TEXT contains a partial
+ username preceded by a random character (usually `~'). As with all
+ completion generators, STATE is zero on the first call and non-zero
+ for subsequent calls.
+
+\1f
+File: readline.info, Node: Completion Variables, Next: A Short Completion Example, Prev: Completion Functions, Up: Custom Completers
+
+Completion Variables
+--------------------
+
+ - Variable: Function * rl_completion_entry_function
+ A pointer to the generator function for `completion_matches ()'.
+ `NULL' means to use `filename_entry_function ()', the default
+ filename completer.
+
+ - Variable: CPPFunction * rl_attempted_completion_function
+ A pointer to an alternative function to create matches. The
+ function is called with TEXT, START, and END. START and END are
+ indices in `rl_line_buffer' saying what the boundaries of TEXT
+ are. If this function exists and returns `NULL', or if this
+ variable is set to `NULL', then `rl_complete ()' will call the
+ value of `rl_completion_entry_function' to generate matches,
+ otherwise the array of strings returned will be used.
+
+ - Variable: CPFunction * rl_filename_quoting_function
+ A pointer to a function that will quote a filename in an
+ application- specific fashion. This is called if filename
+ completion is being attempted and one of the characters in
+ `rl_filename_quote_characters' appears in a completed filename.
+ The function is called with TEXT, MATCH_TYPE, and QUOTE_POINTER.
+ The TEXT is the filename to be quoted. The MATCH_TYPE is either
+ `SINGLE_MATCH', if there is only one completion match, or
+ `MULT_MATCH'. Some functions use this to decide whether or not to
+ insert a closing quote character. The QUOTE_POINTER is a pointer
+ to any opening quote character the user typed. Some functions
+ choose to reset this character.
+
+ - Variable: CPFunction * rl_filename_dequoting_function
+ A pointer to a function that will remove application-specific
+ quoting characters from a filename before completion is attempted,
+ so those characters do not interfere with matching the text
+ against names in the filesystem. It is called with TEXT, the text
+ of the word to be dequoted, and QUOTE_CHAR, which is the quoting
+ character that delimits the filename (usually `'' or `"'). If
+ QUOTE_CHAR is zero, the filename was not in an embedded string.
+
+ - Variable: Function * rl_char_is_quoted_p
+ A pointer to a function to call that determines whether or not a
+ specific character in the line buffer is quoted, according to
+ whatever quoting mechanism the program calling readline uses. The
+ function is called with two arguments: TEXT, the text of the line,
+ and INDEX, the index of the character in the line. It is used to
+ decide whether a character found in
+ `rl_completer_word_break_characters' should be used to break words
+ for the completer.
+
+ - Variable: int rl_completion_query_items
+ Up to this many items will be displayed in response to a
+ possible-completions call. After that, we ask the user if she is
+ sure she wants to see them all. The default value is 100.
+
+ - Variable: char * rl_basic_word_break_characters
+ The basic list of characters that signal a break between words for
+ the completer routine. The default value of this variable is the
+ characters which break words for completion in Bash, i.e., `"
+ \t\n\"\\'`@$><=;|&{("'.
+
+ - Variable: char * rl_basic_quote_characters
+ List of quote characters which can cause a word break.
+
+ - Variable: char * rl_completer_word_break_characters
+ The list of characters that signal a break between words for
+ `rl_complete_internal ()'. The default list is the value of
+ `rl_basic_word_break_characters'.
+
+ - Variable: char * rl_completer_quote_characters
+ List of characters which can be used to quote a substring of the
+ line. Completion occurs on the entire substring, and within the
+ substring `rl_completer_word_break_characters' are treated as any
+ other character, unless they also appear within this list.
+
+ - Variable: char * rl_filename_quote_characters
+ A list of characters that cause a filename to be quoted by the
+ completer when they appear in a completed filename. The default
+ is the null string.
+
+ - Variable: char * rl_special_prefixes
+ The list of characters that are word break characters, but should
+ be left in TEXT when it is passed to the completion function.
+ Programs can use this to help determine what kind of completing to
+ do. For instance, Bash sets this variable to "$@" so that it can
+ complete shell variables and hostnames.
+
+ - Variable: int rl_completion_append_character
+ When a single completion alternative matches at the end of the
+ command line, this character is appended to the inserted
+ completion text. The default is a space character (` '). Setting
+ this to the null character (`\0') prevents anything being appended
+ automatically. This can be changed in custom completion functions
+ to provide the "most sensible word separator character" according
+ to an application-specific command line syntax specification.
+
+ - Variable: int rl_ignore_completion_duplicates
+ If non-zero, then disallow duplicates in the matches. Default is
+ 1.
+
+ - Variable: int rl_filename_completion_desired
+ Non-zero means that the results of the matches are to be treated as
+ filenames. This is *always* zero on entry, and can only be changed
+ within a completion entry generator function. If it is set to a
+ non-zero value, directory names have a slash appended and Readline
+ attempts to quote completed filenames if they contain any embedded
+ word break characters.
+
+ - Variable: int rl_filename_quoting_desired
+ Non-zero means that the results of the matches are to be quoted
+ using double quotes (or an application-specific quoting mechanism)
+ if the completed filename contains any characters in
+ `rl_filename_quote_chars'. This is *always* non-zero on entry,
+ and can only be changed within a completion entry generator
+ function. The quoting is effected via a call to the function
+ pointed to by `rl_filename_quoting_function'.
+
+ - Variable: int rl_inhibit_completion
+ If this variable is non-zero, completion is inhibit<ed. The
+ completion character will be inserted as any other bound to
+ `self-insert'.
+
+ - Variable: Function * rl_ignore_some_completions_function
+ This function, if defined, is called by the completer when real
+ filename completion is done, after all the matching names have
+ been generated. It is passed a `NULL' terminated array of matches.
+ The first element (`matches[0]') is the maximal substring common
+ to all matches. This function can re-arrange the list of matches
+ as required, but each element deleted from the array must be freed.
+
+ - Variable: Function * rl_directory_completion_hook
+ This function, if defined, is allowed to modify the directory
+ portion of filenames Readline completes. It is called with the
+ address of a string (the current directory name) as an argument.
+ It could be used to expand symbolic links or shell variables in
+ pathnames.
+
+ - Variable: VFunction * rl_completion_display_matches_hook
+ If non-zero, then this is the address of a function to call when
+ completing a word would normally display the list of possible
+ matches. This function is called in lieu of Readline displaying
+ the list. It takes three arguments: (`char **'MATCHES, `int'
+ NUM_MATCHES, `int' MAX_LENGTH) where MATCHES is the array of
+ matching strings, NUM_MATCHES is the number of strings in that
+ array, and MAX_LENGTH is the length of the longest string in that
+ array. Readline provides a convenience function,
+ `rl_display_match_list', that takes care of doing the display to
+ Readline's output stream. That function may be called from this
+ hook.
+
+\1f
+File: readline.info, Node: A Short Completion Example, Prev: Completion Variables, Up: Custom Completers
+
+A Short Completion Example
+--------------------------
+
+ Here is a small application demonstrating the use of the GNU Readline
+library. It is called `fileman', and the source code resides in
+`examples/fileman.c'. This sample application provides completion of
+command names, line editing features, and access to the history list.
+
+ /* fileman.c -- A tiny application which demonstrates how to use the
+ GNU Readline library. This application interactively allows users
+ to manipulate files and their modes. */
+
+ #include <stdio.h>
+ #include <sys/types.h>
+ #include <sys/file.h>
+ #include <sys/stat.h>
+ #include <sys/errno.h>
+
+ #include <readline/readline.h>
+ #include <readline/history.h>
+
+ extern char *getwd ();
+ extern char *xmalloc ();
+
+ /* The names of functions that actually do the manipulation. */
+ int com_list (), com_view (), com_rename (), com_stat (), com_pwd ();
+ int com_delete (), com_help (), com_cd (), com_quit ();
+
+ /* A structure which contains information on the commands this program
+ can understand. */
+
+ typedef struct {
+ char *name; /* User printable name of the function. */
+ Function *func; /* Function to call to do the job. */
+ char *doc; /* Documentation for this function. */
+ } COMMAND;
+
+ COMMAND commands[] = {
+ { "cd", com_cd, "Change to directory DIR" },
+ { "delete", com_delete, "Delete FILE" },
+ { "help", com_help, "Display this text" },
+ { "?", com_help, "Synonym for `help'" },
+ { "list", com_list, "List files in DIR" },
+ { "ls", com_list, "Synonym for `list'" },
+ { "pwd", com_pwd, "Print the current working directory" },
+ { "quit", com_quit, "Quit using Fileman" },
+ { "rename", com_rename, "Rename FILE to NEWNAME" },
+ { "stat", com_stat, "Print out statistics on FILE" },
+ { "view", com_view, "View the contents of FILE" },
+ { (char *)NULL, (Function *)NULL, (char *)NULL }
+ };
+
+ /* Forward declarations. */
+ char *stripwhite ();
+ COMMAND *find_command ();
+
+ /* The name of this program, as taken from argv[0]. */
+ char *progname;
+
+ /* When non-zero, this global means the user is done using this program. */
+ int done;
+
+ char *
+ dupstr (s)
+ int s;
+ {
+ char *r;
+
+ r = xmalloc (strlen (s) + 1);
+ strcpy (r, s);
+ return (r);
+ }
+
+ main (argc, argv)
+ int argc;
+ char **argv;
+ {
+ char *line, *s;
+
+ progname = argv[0];
+
+ initialize_readline (); /* Bind our completer. */
+
+ /* Loop reading and executing lines until the user quits. */
+ for ( ; done == 0; )
+ {
+ line = readline ("FileMan: ");
+
+ if (!line)
+ break;
+
+ /* Remove leading and trailing whitespace from the line.
+ Then, if there is anything left, add it to the history list
+ and execute it. */
+ s = stripwhite (line);
+
+ if (*s)
+ {
+ add_history (s);
+ execute_line (s);
+ }
+
+ free (line);
+ }
+ exit (0);
+ }
+
+ /* Execute a command line. */
+ int
+ execute_line (line)
+ char *line;
+ {
+ register int i;
+ COMMAND *command;
+ char *word;
+
+ /* Isolate the command word. */
+ i = 0;
+ while (line[i] && whitespace (line[i]))
+ i++;
+ word = line + i;
+
+ while (line[i] && !whitespace (line[i]))
+ i++;
+
+ if (line[i])
+ line[i++] = '\0';
+
+ command = find_command (word);
+
+ if (!command)
+ {
+ fprintf (stderr, "%s: No such command for FileMan.\n", word);
+ return (-1);
+ }
+
+ /* Get argument to command, if any. */
+ while (whitespace (line[i]))
+ i++;
+
+ word = line + i;
+
+ /* Call the function. */
+ return ((*(command->func)) (word));
+ }
+
+ /* Look up NAME as the name of a command, and return a pointer to that
+ command. Return a NULL pointer if NAME isn't a command name. */
+ COMMAND *
+ find_command (name)
+ char *name;
+ {
+ register int i;
+
+ for (i = 0; commands[i].name; i++)
+ if (strcmp (name, commands[i].name) == 0)
+ return (&commands[i]);
+
+ return ((COMMAND *)NULL);
+ }
+
+ /* Strip whitespace from the start and end of STRING. Return a pointer
+ into STRING. */
+ char *
+ stripwhite (string)
+ char *string;
+ {
+ register char *s, *t;
+
+ for (s = string; whitespace (*s); s++)
+ ;
+
+ if (*s == 0)
+ return (s);
+
+ t = s + strlen (s) - 1;
+ while (t > s && whitespace (*t))
+ t--;
+ *++t = '\0';
+
+ return s;
+ }
+
+ /* **************************************************************** */
+ /* */
+ /* Interface to Readline Completion */
+ /* */
+ /* **************************************************************** */
+
+ char *command_generator ();
+ char **fileman_completion ();
+
+ /* Tell the GNU Readline library how to complete. We want to try to complete
+ on command names if this is the first word in the line, or on filenames
+ if not. */
+ initialize_readline ()
+ {
+ /* Allow conditional parsing of the ~/.inputrc file. */
+ rl_readline_name = "FileMan";
+
+ /* Tell the completer that we want a crack first. */
+ rl_attempted_completion_function = (CPPFunction *)fileman_completion;
+ }
+
+ /* Attempt to complete on the contents of TEXT. START and END bound the
+ region of rl_line_buffer that contains the word to complete. TEXT is
+ the word to complete. We can use the entire contents of rl_line_buffer
+ in case we want to do some simple parsing. Return the array of matches,
+ or NULL if there aren't any. */
+ char **
+ fileman_completion (text, start, end)
+ char *text;
+ int start, end;
+ {
+ char **matches;
+
+ matches = (char **)NULL;
+
+ /* If this word is at the start of the line, then it is a command
+ to complete. Otherwise it is the name of a file in the current
+ directory. */
+ if (start == 0)
+ matches = completion_matches (text, command_generator);
+
+ return (matches);
+ }
+
+ /* Generator function for command completion. STATE lets us know whether
+ to start from scratch; without any state (i.e. STATE == 0), then we
+ start at the top of the list. */
+ char *
+ command_generator (text, state)
+ char *text;
+ int state;
+ {
+ static int list_index, len;
+ char *name;
+
+ /* If this is a new word to complete, initialize now. This includes
+ saving the length of TEXT for efficiency, and initializing the index
+ variable to 0. */
+ if (!state)
+ {
+ list_index = 0;
+ len = strlen (text);
+ }
+
+ /* Return the next name which partially matches from the command list. */
+ while (name = commands[list_index].name)
+ {
+ list_index++;
+
+ if (strncmp (name, text, len) == 0)
+ return (dupstr(name));
+ }
+
+ /* If no names matched, then return NULL. */
+ return ((char *)NULL);
+ }
+
+ /* **************************************************************** */
+ /* */
+ /* FileMan Commands */
+ /* */
+ /* **************************************************************** */
+
+ /* String to pass to system (). This is for the LIST, VIEW and RENAME
+ commands. */
+ static char syscom[1024];
+
+ /* List the file(s) named in arg. */
+ com_list (arg)
+ char *arg;
+ {
+ if (!arg)
+ arg = "";
+
+ sprintf (syscom, "ls -FClg %s", arg);
+ return (system (syscom));
+ }
+
+ com_view (arg)
+ char *arg;
+ {
+ if (!valid_argument ("view", arg))
+ return 1;
+
+ sprintf (syscom, "more %s", arg);
+ return (system (syscom));
+ }
+
+ com_rename (arg)
+ char *arg;
+ {
+ too_dangerous ("rename");
+ return (1);
+ }
+
+ com_stat (arg)
+ char *arg;
+ {
+ struct stat finfo;
+
+ if (!valid_argument ("stat", arg))
+ return (1);
+
+ if (stat (arg, &finfo) == -1)
+ {
+ perror (arg);
+ return (1);
+ }
+
+ printf ("Statistics for `%s':\n", arg);
+
+ printf ("%s has %d link%s, and is %d byte%s in length.\n", arg,
+ finfo.st_nlink,
+ (finfo.st_nlink == 1) ? "" : "s",
+ finfo.st_size,
+ (finfo.st_size == 1) ? "" : "s");
+ printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
+ printf (" Last access at: %s", ctime (&finfo.st_atime));
+ printf (" Last modified at: %s", ctime (&finfo.st_mtime));
+ return (0);
+ }
+
+ com_delete (arg)
+ char *arg;
+ {
+ too_dangerous ("delete");
+ return (1);
+ }
+
+ /* Print out help for ARG, or for all of the commands if ARG is
+ not present. */
+ com_help (arg)
+ char *arg;
+ {
+ register int i;
+ int printed = 0;
+
+ for (i = 0; commands[i].name; i++)
+ {
+ if (!*arg || (strcmp (arg, commands[i].name) == 0))
+ {
+ printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
+ printed++;
+ }
+ }
+
+ if (!printed)
+ {
+ printf ("No commands match `%s'. Possibilties are:\n", arg);
+
+ for (i = 0; commands[i].name; i++)
+ {
+ /* Print in six columns. */
+ if (printed == 6)
+ {
+ printed = 0;
+ printf ("\n");
+ }
+
+ printf ("%s\t", commands[i].name);
+ printed++;
+ }
+
+ if (printed)
+ printf ("\n");
+ }
+ return (0);
+ }
+
+ /* Change to the directory ARG. */
+ com_cd (arg)
+ char *arg;
+ {
+ if (chdir (arg) == -1)
+ {
+ perror (arg);
+ return 1;
+ }
+
+ com_pwd ("");
+ return (0);
+ }
+
+ /* Print out the current working directory. */
+ com_pwd (ignore)
+ char *ignore;
+ {
+ char dir[1024], *s;
+
+ s = getwd (dir);
+ if (s == 0)
+ {
+ printf ("Error getting pwd: %s\n", dir);
+ return 1;
+ }
+
+ printf ("Current directory is %s\n", dir);
+ return 0;
+ }
+
+ /* The user wishes to quit using this program. Just set DONE non-zero. */
+ com_quit (arg)
+ char *arg;
+ {
+ done = 1;
+ return (0);
+ }
+
+ /* Function which tells you that you can't do this. */
+ too_dangerous (caller)
+ char *caller;
+ {
+ fprintf (stderr,
+ "%s: Too dangerous for me to distribute. Write it yourself.\n",
+ caller);
+ }
+
+ /* Return non-zero if ARG is a valid argument for CALLER, else print
+ an error message and return zero. */
+ int
+ valid_argument (caller, arg)
+ char *caller, *arg;
+ {
+ if (!arg || !*arg)
+ {
+ fprintf (stderr, "%s: Argument required.\n", caller);
+ return (0);
+ }
+
+ return (1);
+ }
+
+\1f
+File: readline.info, Node: Concept Index, Next: Function and Variable Index, Prev: Programming with GNU Readline, Up: Top
+
+Concept Index
+*************
+
+* Menu:
+
+* command editing: Readline Bare Essentials.
+* editing command lines: Readline Bare Essentials.
+* initialization file, readline: Readline Init File.
+* interaction, readline: Readline Interaction.
+* kill ring: Readline Killing Commands.
+* killing text: Readline Killing Commands.
+* notation, readline: Readline Bare Essentials.
+* readline, function: Basic Behavior.
+* yanking text: Readline Killing Commands.
+
+\1f
+File: readline.info, Node: Function and Variable Index, Prev: Concept Index, Up: Top
+
+Function and Variable Index
+***************************
+
+* Menu:
+
+* (: Utility Functions.
+* abort (C-g): Miscellaneous Commands.
+* accept-line (Newline, Return): Commands For History.
+* alphabetic: Utility Functions.
+* backward-char (C-b): Commands For Moving.
+* backward-delete-char (Rubout): Commands For Text.
+* backward-kill-line (C-x Rubout): Commands For Killing.
+* backward-kill-word (M-DEL): Commands For Killing.
+* backward-word (M-b): Commands For Moving.
+* beginning-of-history (M-<): Commands For History.
+* beginning-of-line (C-a): Commands For Moving.
+* bell-style: Readline Init File Syntax.
+* call-last-kbd-macro (C-x e): Keyboard Macros.
+* capitalize-word (M-c): Commands For Text.
+* character-search (C-]): Miscellaneous Commands.
+* character-search-backward (M-C-]): Miscellaneous Commands.
+* clear-screen (C-l): Commands For Moving.
+* comment-begin: Readline Init File Syntax.
+* complete (TAB): Commands For Completion.
+* completion-query-items: Readline Init File Syntax.
+* completion_matches: Completion Functions.
+* convert-meta: Readline Init File Syntax.
+* copy-backward-word (): Commands For Killing.
+* copy-forward-word (): Commands For Killing.
+* copy-region-as-kill (): Commands For Killing.
+* delete-char (C-d): Commands For Text.
+* delete-char-or-list (): Commands For Completion.
+* delete-horizontal-space (): Commands For Killing.
+* digit-argument (M-0, M-1, ... M--): Numeric Arguments.
+* digit_p: Utility Functions.
+* digit_value: Utility Functions.
+* ding: Utility Functions.
+* disable-completion: Readline Init File Syntax.
+* do-uppercase-version (M-a, M-b, M-X, ...): Miscellaneous Commands.
+* downcase-word (M-l): Commands For Text.
+* dump-functions (): Miscellaneous Commands.
+* dump-macros (): Miscellaneous Commands.
+* dump-variables (): Miscellaneous Commands.
+* editing-mode: Readline Init File Syntax.
+* enable-keypad: Readline Init File Syntax.
+* end-kbd-macro (C-x )): Keyboard Macros.
+* end-of-history (M->): Commands For History.
+* end-of-line (C-e): Commands For Moving.
+* exchange-point-and-mark (C-x C-x): Miscellaneous Commands.
+* expand-tilde: Readline Init File Syntax.
+* filename_completion_function: Completion Functions.
+* forward-backward-delete-char (): Commands For Text.
+* forward-char (C-f): Commands For Moving.
+* forward-search-history (C-s): Commands For History.
+* forward-word (M-f): Commands For Moving.
+* free_undo_list: Allowing Undoing.
+* history-search-backward (): Commands For History.
+* history-search-forward (): Commands For History.
+* horizontal-scroll-mode: Readline Init File Syntax.
+* input-meta: Readline Init File Syntax.
+* insert-comment (M-#): Miscellaneous Commands.
+* insert-completions (M-*): Commands For Completion.
+* isearch-terminators: Readline Init File Syntax.
+* keymap: Readline Init File Syntax.
+* kill-line (C-k): Commands For Killing.
+* kill-region (): Commands For Killing.
+* kill-whole-line (): Commands For Killing.
+* kill-word (M-d): Commands For Killing.
+* lowercase_p: Utility Functions.
+* mark-modified-lines: Readline Init File Syntax.
+* menu-complete (): Commands For Completion.
+* meta-flag: Readline Init File Syntax.
+* next-history (C-n): Commands For History.
+* non-incremental-forward-search-history (M-n): Commands For History.
+* non-incremental-reverse-search-history (M-p): Commands For History.
+* numeric: Utility Functions.
+* output-meta: Readline Init File Syntax.
+* possible-completions (M-?): Commands For Completion.
+* prefix-meta (ESC): Miscellaneous Commands.
+* previous-history (C-p): Commands For History.
+* quoted-insert (C-q, C-v): Commands For Text.
+* re-read-init-file (C-x C-r): Miscellaneous Commands.
+* readline: Basic Behavior.
+* redraw-current-line (): Commands For Moving.
+* reverse-search-history (C-r): Commands For History.
+* revert-line (M-r): Miscellaneous Commands.
+* rl_add_defun: Function Naming.
+* rl_add_undo: Allowing Undoing.
+* rl_attempted_completion_function: Completion Variables.
+* rl_basic_quote_characters: Completion Variables.
+* rl_basic_word_break_characters: Completion Variables.
+* rl_begin_undo_group: Allowing Undoing.
+* rl_bind_key: Binding Keys.
+* rl_bind_key_in_map: Binding Keys.
+* rl_binding_keymap: Readline Variables.
+* rl_callback_handler_install: Alternate Interface.
+* rl_callback_handler_remove: Alternate Interface.
+* rl_callback_read_char: Alternate Interface.
+* rl_catch_signals: Readline Signal Handling.
+* rl_catch_sigwinch: Readline Signal Handling.
+* rl_char_is_quoted_p: Completion Variables.
+* rl_cleanup_after_signal: Readline Signal Handling.
+* rl_clear_message: Redisplay.
+* rl_clear_signals: Readline Signal Handling.
+* rl_complete <1>: Completion Functions.
+* rl_complete: How Completing Works.
+* rl_complete_internal: Completion Functions.
+* rl_completer_quote_characters: Completion Variables.
+* rl_completer_word_break_characters: Completion Variables.
+* rl_completion_append_character: Completion Variables.
+* rl_completion_display_matches_hook: Completion Variables.
+* rl_completion_entry_function <1>: How Completing Works.
+* rl_completion_entry_function: Completion Variables.
+* rl_completion_query_items: Completion Variables.
+* rl_copy_keymap: Keymaps.
+* rl_copy_text: Modifying Text.
+* rl_delete_text: Modifying Text.
+* rl_directory_completion_hook: Completion Variables.
+* rl_discard_keymap: Keymaps.
+* rl_display_match_list: Utility Functions.
+* rl_do_undo: Allowing Undoing.
+* rl_done: Readline Variables.
+* rl_end: Readline Variables.
+* rl_end_undo_group: Allowing Undoing.
+* rl_erase_empty_line: Readline Variables.
+* rl_event_hook: Readline Variables.
+* rl_executing_keymap: Readline Variables.
+* rl_filename_completion_desired: Completion Variables.
+* rl_filename_dequoting_function: Completion Variables.
+* rl_filename_quote_characters: Completion Variables.
+* rl_filename_quoting_desired: Completion Variables.
+* rl_filename_quoting_function: Completion Variables.
+* rl_forced_update_display: Redisplay.
+* rl_free_line_state: Readline Signal Handling.
+* rl_function_dumper: Associating Function Names and Bindings.
+* rl_function_of_keyseq: Associating Function Names and Bindings.
+* rl_generic_bind: Binding Keys.
+* rl_get_keymap: Keymaps.
+* rl_get_keymap_by_name: Keymaps.
+* rl_get_keymap_name: Keymaps.
+* rl_getc: Utility Functions.
+* rl_getc_function: Readline Variables.
+* rl_ignore_completion_duplicates: Completion Variables.
+* rl_ignore_some_completions_function: Completion Variables.
+* rl_inhibit_completion: Completion Variables.
+* rl_initialize: Utility Functions.
+* rl_insert_completions: Completion Functions.
+* rl_insert_text: Modifying Text.
+* rl_instream: Readline Variables.
+* rl_invoking_keyseqs: Associating Function Names and Bindings.
+* rl_invoking_keyseqs_in_map: Associating Function Names and Bindings.
+* rl_kill_text: Modifying Text.
+* rl_library_version: Readline Variables.
+* rl_line_buffer: Readline Variables.
+* rl_list_funmap_names: Associating Function Names and Bindings.
+* rl_make_bare_keymap: Keymaps.
+* rl_make_keymap: Keymaps.
+* rl_mark: Readline Variables.
+* rl_message: Redisplay.
+* rl_modifying: Allowing Undoing.
+* rl_named_function: Associating Function Names and Bindings.
+* rl_on_new_line: Redisplay.
+* rl_outstream: Readline Variables.
+* rl_parse_and_bind: Binding Keys.
+* rl_pending_input: Readline Variables.
+* rl_point: Readline Variables.
+* rl_possible_completions: Completion Functions.
+* rl_pre_input_hook: Readline Variables.
+* rl_prompt: Readline Variables.
+* rl_read_init_file: Binding Keys.
+* rl_read_key: Utility Functions.
+* rl_readline_name: Readline Variables.
+* rl_redisplay: Redisplay.
+* rl_redisplay_function: Readline Variables.
+* rl_reset_after_signal: Readline Signal Handling.
+* rl_reset_line_state: Redisplay.
+* rl_reset_terminal: Utility Functions.
+* rl_resize_terminal: Readline Signal Handling.
+* rl_restore_prompt: Redisplay.
+* rl_save_prompt: Redisplay.
+* rl_set_keymap: Keymaps.
+* rl_set_signals: Readline Signal Handling.
+* rl_special_prefixes: Completion Variables.
+* rl_startup_hook: Readline Variables.
+* rl_stuff_char: Utility Functions.
+* rl_terminal_name: Readline Variables.
+* rl_unbind_command_in_map: Binding Keys.
+* rl_unbind_function_in_map: Binding Keys.
+* rl_unbind_key: Binding Keys.
+* rl_unbind_key_in_map: Binding Keys.
+* self-insert (a, b, A, 1, !, ...): Commands For Text.
+* set-mark (C-@): Miscellaneous Commands.
+* show-all-if-ambiguous: Readline Init File Syntax.
+* start-kbd-macro (C-x (): Keyboard Macros.
+* to_lower: Utility Functions.
+* to_upper: Utility Functions.
+* transpose-chars (C-t): Commands For Text.
+* transpose-words (M-t): Commands For Text.
+* undo (C-_, C-x C-u): Miscellaneous Commands.
+* universal-argument (): Numeric Arguments.
+* unix-line-discard (C-u): Commands For Killing.
+* unix-word-rubout (C-w): Commands For Killing.
+* upcase-word (M-u): Commands For Text.
+* uppercase_p: Utility Functions.
+* username_completion_function: Completion Functions.
+* visible-stats: Readline Init File Syntax.
+* yank (C-y): Commands For Killing.
+* yank-last-arg (M-., M-_): Commands For History.
+* yank-nth-arg (M-C-y): Commands For History.
+* yank-pop (M-y): Commands For Killing.
+
+
+\1f
+Tag Table:
+Node: Top\7f1190
+Node: Command Line Editing\7f1789
+Node: Introduction and Notation\7f2440
+Node: Readline Interaction\7f3479
+Node: Readline Bare Essentials\7f4672
+Node: Readline Movement Commands\7f6213
+Node: Readline Killing Commands\7f7179
+Node: Readline Arguments\7f8895
+Node: Searching\7f9870
+Node: Readline Init File\7f11583
+Node: Readline Init File Syntax\7f12630
+Node: Conditional Init Constructs\7f21837
+Node: Sample Init File\7f24276
+Node: Bindable Readline Commands\7f27446
+Node: Commands For Moving\7f28197
+Node: Commands For History\7f29045
+Node: Commands For Text\7f31797
+Node: Commands For Killing\7f33816
+Node: Numeric Arguments\7f35966
+Node: Commands For Completion\7f37093
+Node: Keyboard Macros\7f38841
+Node: Miscellaneous Commands\7f39400
+Node: Readline vi Mode\7f42204
+Node: Programming with GNU Readline\7f43974
+Node: Basic Behavior\7f44942
+Node: Custom Functions\7f48268
+Node: The Function Type\7f48869
+Node: Function Writing\7f49714
+Node: Readline Variables\7f50798
+Node: Readline Convenience Functions\7f54407
+Node: Function Naming\7f55145
+Node: Keymaps\7f56373
+Node: Binding Keys\7f58087
+Node: Associating Function Names and Bindings\7f60295
+Node: Allowing Undoing\7f61873
+Node: Redisplay\7f64458
+Node: Modifying Text\7f65853
+Node: Utility Functions\7f66764
+Node: Alternate Interface\7f69448
+Node: Readline Signal Handling\7f72742
+Node: Custom Completers\7f77788
+Node: How Completing Works\7f78503
+Node: Completion Functions\7f81499
+Node: Completion Variables\7f84514
+Node: A Short Completion Example\7f92412
+Node: Concept Index\7f104718
+Node: Function and Variable Index\7f105472
+\1f
+End Tag Table
--- /dev/null
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+(or)g(Y)l(ou)10 b Fa(.)d(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)25 b Fu(15)374 1409 y(1.4.7)44 b(Keyb)q(oard)15
+b(Macros)6 b Fa(.)h(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)21
+b Fu(15)374 1464 y(1.4.8)44 b(Some)15 b(Miscellaneous)i(Commands)7
+b Fa(.)g(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+22 b Fu(16)224 1519 y(1.5)45 b(Readline)17 b(vi)f(Mo)q(de)e
+Fa(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)28 b Fu(17)75 1640 y Fs(2)67 b(Programming)23
+b(with)g(GNU)f(Readline)12 b Fb(.)f(.)g(.)f(.)g(.)g(.)g(.)h(.)f(.)35
+b Fs(19)224 1708 y Fu(2.1)45 b(Basic)16 b(Beha)o(vior)8
+b Fa(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)23 b Fu(19)224 1763 y(2.2)45
+b(Custom)14 b(F)l(unctions)7 b Fa(.)i(.)f(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)22 b Fu(20)374
+1818 y(2.2.1)44 b(The)15 b(F)l(unction)h(T)o(yp)q(e)11
+b Fa(.)d(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)26 b Fu(20)374
+1873 y(2.2.2)44 b(W)l(riting)16 b(a)e(New)i(F)l(unction)6
+b Fa(.)i(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)21 b Fu(21)224 1928 y(2.3)45
+b(Readline)17 b(V)l(ariables)f Fa(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)29 b Fu(21)224
+1982 y(2.4)45 b(Readline)17 b(Con)o(v)o(enience)g(F)l(unctions)7
+b Fa(.)i(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)23 b Fu(23)374 2037 y(2.4.1)44
+b(Naming)15 b(a)g(F)l(unction)e Fa(.)7 b(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)27 b Fu(23)374 2092 y(2.4.2)44 b(Selecting)17
+b(a)e(Keymap)6 b Fa(.)h(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)21
+b Fu(23)374 2147 y(2.4.3)44 b(Binding)17 b(Keys)5 b Fa(.)j(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)20 b
+Fu(24)374 2202 y(2.4.4)44 b(Asso)q(ciating)16 b(F)l(unction)g(Names)f
+(and)g(Bindings)8 b Fa(.)h(.)f(.)f(.)h(.)f(.)h(.)23 b
+Fu(25)374 2256 y(2.4.5)44 b(Allo)o(wing)16 b(Undoing)f
+Fa(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)29 b
+Fu(26)374 2311 y(2.4.6)44 b(Redispla)o(y)10 b Fa(.)f(.)f(.)g(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)26
+b Fu(27)374 2366 y(2.4.7)44 b(Mo)q(difying)16 b(T)l(ext)7
+b Fa(.)g(.)g(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)22
+b Fu(27)374 2421 y(2.4.8)44 b(Utilit)o(y)16 b(F)l(unctions)e
+Fa(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)28
+b Fu(28)374 2475 y(2.4.9)44 b(Alternate)15 b(In)o(terface)5
+b Fa(.)i(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)20 b
+Fu(29)374 2530 y(2.4.10)43 b(An)16 b(Example)f Fa(.)8
+b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)30
+b Fu(29)224 2585 y(2.5)45 b(Readline)17 b(Signal)g(Handling)12
+b Fa(.)c(.)g(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27
+b Fu(31)224 2640 y(2.6)45 b(Custom)14 b(Completers)f
+Fa(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
+h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)28 b Fu(32)p eop
+%%Page: -2 56
+-2 55 bop 75 -58 a Fu(ii)1321 b(GNU)15 b(Readline)i(Library)374
+42 y(2.6.1)44 b(Ho)o(w)14 b(Completing)i(W)l(orks)10
+b Fa(.)d(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)
+f(.)h(.)f(.)h(.)f(.)h(.)f(.)25 b Fu(32)374 96 y(2.6.2)44
+b(Completion)16 b(F)l(unctions)6 b Fa(.)i(.)g(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
+21 b Fu(33)374 151 y(2.6.3)44 b(Completion)16 b(V)l(ariables)c
+Fa(.)c(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
+(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27 b Fu(34)374 206
+y(2.6.4)44 b(A)15 b(Short)g(Completion)h(Example)5 b
+Fa(.)j(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
+(.)f(.)20 b Fu(37)75 327 y Fs(Concept)i(Index)10 b Fb(.)i(.)e(.)g(.)g
+(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)
+g(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)33 b Fs(47)75 462
+y(F)-6 b(unction)25 b(and)d(V)-6 b(ariable)24 b(Index)9
+b Fb(.)i(.)f(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)
+g(.)32 b Fs(49)p eop
+%%Trailer
+end
+userdict /end-hook known{end-hook}if
+%%EOF
--- /dev/null
+%% TeX macros to handle texinfo files
+
+% Copyright (C) 1985, 86, 88, 90, 91, 92, 93,
+% 94, 95, 1996 Free Software Foundation, Inc.
+
+%This texinfo.tex file 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 2, or (at
+%your option) any later version.
+
+%This texinfo.tex file 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 this texinfo.tex file; see the file COPYING. If not, write
+%to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+%Boston, MA 02111-1307, USA.
+
+
+%In other words, you are welcome to use, share and improve this program.
+%You are forbidden to forbid anyone else to use, share and improve
+%what you give them. Help stamp out software-hoarding!
+
+
+% Send bug reports to bug-texinfo@prep.ai.mit.edu.
+% Please include a *precise* test case in each bug report.
+
+
+% Make it possible to create a .fmt file just by loading this file:
+% if the underlying format is not loaded, start by loading it now.
+% Added by gildea November 1993.
+\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
+
+% This automatically updates the version number based on RCS.
+\def\deftexinfoversion$#1: #2 ${\def\texinfoversion{#2}}
+\deftexinfoversion$Revision$
+\message{Loading texinfo package [Version \texinfoversion]:}
+
+% If in a .fmt file, print the version number
+% and turn on active characters that we couldn't do earlier because
+% they might have appeared in the input file name.
+\everyjob{\message{[Texinfo version \texinfoversion]}\message{}
+ \catcode`+=\active \catcode`\_=\active}
+
+% Save some parts of plain tex whose names we will redefine.
+
+\let\ptexb=\b
+\let\ptexbullet=\bullet
+\let\ptexc=\c
+\let\ptexcomma=\,
+\let\ptexdot=\.
+\let\ptexdots=\dots
+\let\ptexend=\end
+\let\ptexequiv = \equiv
+\let\ptexi=\i
+\let\ptexlbrace=\{
+\let\ptexrbrace=\}
+\let\ptexstar=\*
+\let\ptext=\t
+\let\ptextilde=\~
+
+% Be sure we're in horizontal mode when doing a tie, since we make space
+% equivalent to this in @example-like environments. Otherwise, a space
+% at the beginning of a line will start with \penalty -- and
+% since \penalty is valid in vertical mode, we'd end up putting the
+% penalty on the vertical list instead of in the new paragraph.
+{\catcode`@ = 11
+ % Avoid using \@M directly, because that causes trouble
+ % if the definition is written into an index file.
+ \global\let\tiepenalty = \@M
+ \gdef\tie{\leavevmode\penalty\tiepenalty\ }
+}
+\let\~ = \tie % And make it available as @~.
+
+
+\message{Basics,}
+\chardef\other=12
+
+% If this character appears in an error message or help string, it
+% starts a new line in the output.
+\newlinechar = `^^J
+
+% Set up fixed words for English.
+\ifx\putwordChapter\undefined{\gdef\putwordChapter{Chapter}}\fi%
+\def\putwordInfo{Info}%
+\ifx\putwordSee\undefined{\gdef\putwordSee{See}}\fi%
+\ifx\putwordsee\undefined{\gdef\putwordsee{see}}\fi%
+\ifx\putwordfile\undefined{\gdef\putwordfile{file}}\fi%
+\ifx\putwordpage\undefined{\gdef\putwordpage{page}}\fi%
+\ifx\putwordsection\undefined{\gdef\putwordsection{section}}\fi%
+\ifx\putwordSection\undefined{\gdef\putwordSection{Section}}\fi%
+\ifx\putwordTableofContents\undefined{\gdef\putwordTableofContents{Table of Contents}}\fi%
+\ifx\putwordShortContents\undefined{\gdef\putwordShortContents{Short Contents}}\fi%
+\ifx\putwordAppendix\undefined{\gdef\putwordAppendix{Appendix}}\fi%
+
+% Ignore a token.
+%
+\def\gobble#1{}
+
+\hyphenation{ap-pen-dix}
+\hyphenation{mini-buf-fer mini-buf-fers}
+\hyphenation{eshell}
+
+% Margin to add to right of even pages, to left of odd pages.
+\newdimen \bindingoffset
+\newdimen \normaloffset
+\newdimen\pagewidth \newdimen\pageheight
+
+% Sometimes it is convenient to have everything in the transcript file
+% and nothing on the terminal. We don't just call \tracingall here,
+% since that produces some useless output on the terminal.
+%
+\def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
+\def\loggingall{\tracingcommands2 \tracingstats2
+ \tracingpages1 \tracingoutput1 \tracinglostchars1
+ \tracingmacros2 \tracingparagraphs1 \tracingrestores1
+ \showboxbreadth\maxdimen\showboxdepth\maxdimen
+}%
+
+%---------------------Begin change-----------------------
+%
+%%%% For @cropmarks command.
+% Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
+%
+\newdimen\cornerlong \newdimen\cornerthick
+\newdimen \topandbottommargin
+\newdimen \outerhsize \newdimen \outervsize
+\cornerlong=1pc\cornerthick=.3pt % These set size of cropmarks
+\outerhsize=7in
+%\outervsize=9.5in
+% Alternative @smallbook page size is 9.25in
+\outervsize=9.25in
+\topandbottommargin=.75in
+%
+%---------------------End change-----------------------
+
+% \onepageout takes a vbox as an argument. Note that \pagecontents
+% does insertions, but you have to call it yourself.
+\chardef\PAGE=255 \output={\onepageout{\pagecontents\PAGE}}
+\def\onepageout#1{%
+ \hoffset=\normaloffset
+ \ifodd\pageno \advance\hoffset by \bindingoffset
+ \else \advance\hoffset by -\bindingoffset\fi
+ {%
+ \escapechar = `\\ % use backslash in output files.
+ \indexdummies
+ \shipout\vbox{%
+ {\let\hsize=\pagewidth \makeheadline}%
+ \pagebody{#1}%
+ {\let\hsize=\pagewidth \makefootline}%
+ }%
+ }%
+ \advancepageno
+ \ifnum\outputpenalty>-20000 \else\dosupereject\fi
+}
+
+%%%% For @cropmarks command %%%%
+
+% Here is a modification of the main output routine for Near East Publications
+% This provides right-angle cropmarks at all four corners.
+% The contents of the page are centerlined into the cropmarks,
+% and any desired binding offset is added as an \hskip on either
+% site of the centerlined box. (P. A. MacKay, 12 November, 1986)
+%
+\def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
+{\escapechar=`\\\relax % makes sure backslash is used in output files.
+ \shipout
+ \vbox to \outervsize{\hsize=\outerhsize
+ \vbox{\line{\ewtop\hfill\ewtop}}
+ \nointerlineskip
+ \line{\vbox{\moveleft\cornerthick\nstop}
+ \hfill
+ \vbox{\moveright\cornerthick\nstop}}
+ \vskip \topandbottommargin
+ \centerline{\ifodd\pageno\hskip\bindingoffset\fi
+ \vbox{
+ {\let\hsize=\pagewidth \makeheadline}
+ \pagebody{#1}
+ {\let\hsize=\pagewidth \makefootline}}
+ \ifodd\pageno\else\hskip\bindingoffset\fi}
+ \vskip \topandbottommargin plus1fill minus1fill
+ \boxmaxdepth\cornerthick
+ \line{\vbox{\moveleft\cornerthick\nsbot}
+ \hfill
+ \vbox{\moveright\cornerthick\nsbot}}
+ \nointerlineskip
+ \vbox{\line{\ewbot\hfill\ewbot}}
+ }}
+ \advancepageno
+ \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
+%
+% Do @cropmarks to get crop marks
+\def\cropmarks{\let\onepageout=\croppageout }
+
+\newinsert\margin \dimen\margin=\maxdimen
+
+\def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
+{\catcode`\@ =11
+\gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
+% marginal hacks, juha@viisa.uucp (Juha Takala)
+\ifvoid\margin\else % marginal info is present
+ \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
+\dimen@=\dp#1 \unvbox#1
+\ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
+\ifr@ggedbottom \kern-\dimen@ \vfil \fi}
+}
+
+%
+% Here are the rules for the cropmarks. Note that they are
+% offset so that the space between them is truly \outerhsize or \outervsize
+% (P. A. MacKay, 12 November, 1986)
+%
+\def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
+\def\nstop{\vbox
+ {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
+\def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
+\def\nsbot{\vbox
+ {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
+
+% Parse an argument, then pass it to #1. The argument is the rest of
+% the input line (except we remove a trailing comment). #1 should be a
+% macro which expects an ordinary undelimited TeX argument.
+%
+\def\parsearg#1{%
+ \let\next = #1%
+ \begingroup
+ \obeylines
+ \futurelet\temp\parseargx
+}
+
+% If the next token is an obeyed space (from an @example environment or
+% the like), remove it and recurse. Otherwise, we're done.
+\def\parseargx{%
+ % \obeyedspace is defined far below, after the definition of \sepspaces.
+ \ifx\obeyedspace\temp
+ \expandafter\parseargdiscardspace
+ \else
+ \expandafter\parseargline
+ \fi
+}
+
+% Remove a single space (as the delimiter token to the macro call).
+{\obeyspaces %
+ \gdef\parseargdiscardspace {\futurelet\temp\parseargx}}
+
+{\obeylines %
+ \gdef\parseargline#1^^M{%
+ \endgroup % End of the group started in \parsearg.
+ %
+ % First remove any @c comment, then any @comment.
+ % Result of each macro is put in \toks0.
+ \argremovec #1\c\relax %
+ \expandafter\argremovecomment \the\toks0 \comment\relax %
+ %
+ % Call the caller's macro, saved as \next in \parsearg.
+ \expandafter\next\expandafter{\the\toks0}%
+ }%
+}
+
+% Since all \c{,omment} does is throw away the argument, we can let TeX
+% do that for us. The \relax here is matched by the \relax in the call
+% in \parseargline; it could be more or less anything, its purpose is
+% just to delimit the argument to the \c.
+\def\argremovec#1\c#2\relax{\toks0 = {#1}}
+\def\argremovecomment#1\comment#2\relax{\toks0 = {#1}}
+
+% \argremovec{,omment} might leave us with trailing spaces, though; e.g.,
+% @end itemize @c foo
+% will have two active spaces as part of the argument with the
+% `itemize'. Here we remove all active spaces from #1, and assign the
+% result to \toks0.
+%
+% This loses if there are any *other* active characters besides spaces
+% in the argument -- _ ^ +, for example -- since they get expanded.
+% Fortunately, Texinfo does not define any such commands. (If it ever
+% does, the catcode of the characters in questionwill have to be changed
+% here.) But this means we cannot call \removeactivespaces as part of
+% \argremovec{,omment}, since @c uses \parsearg, and thus the argument
+% that \parsearg gets might well have any character at all in it.
+%
+\def\removeactivespaces#1{%
+ \begingroup
+ \ignoreactivespaces
+ \edef\temp{#1}%
+ \global\toks0 = \expandafter{\temp}%
+ \endgroup
+}
+
+% Change the active space to expand to nothing.
+%
+\begingroup
+ \obeyspaces
+ \gdef\ignoreactivespaces{\obeyspaces\let =\empty}
+\endgroup
+
+
+\def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
+
+%% These are used to keep @begin/@end levels from running away
+%% Call \inENV within environments (after a \begingroup)
+\newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
+\def\ENVcheck{%
+\ifENV\errmessage{Still within an environment. Type Return to continue.}
+\endgroup\fi} % This is not perfect, but it should reduce lossage
+
+% @begin foo is the same as @foo, for now.
+\newhelp\EMsimple{Type <Return> to continue.}
+
+\outer\def\begin{\parsearg\beginxxx}
+
+\def\beginxxx #1{%
+\expandafter\ifx\csname #1\endcsname\relax
+{\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
+\csname #1\endcsname\fi}
+
+% @end foo executes the definition of \Efoo.
+%
+\def\end{\parsearg\endxxx}
+\def\endxxx #1{%
+ \removeactivespaces{#1}%
+ \edef\endthing{\the\toks0}%
+ %
+ \expandafter\ifx\csname E\endthing\endcsname\relax
+ \expandafter\ifx\csname \endthing\endcsname\relax
+ % There's no \foo, i.e., no ``environment'' foo.
+ \errhelp = \EMsimple
+ \errmessage{Undefined command `@end \endthing'}%
+ \else
+ \unmatchedenderror\endthing
+ \fi
+ \else
+ % Everything's ok; the right environment has been started.
+ \csname E\endthing\endcsname
+ \fi
+}
+
+% There is an environment #1, but it hasn't been started. Give an error.
+%
+\def\unmatchedenderror#1{%
+ \errhelp = \EMsimple
+ \errmessage{This `@end #1' doesn't have a matching `@#1'}%
+}
+
+% Define the control sequence \E#1 to give an unmatched @end error.
+%
+\def\defineunmatchedend#1{%
+ \expandafter\def\csname E#1\endcsname{\unmatchedenderror{#1}}%
+}
+
+
+% Single-spacing is done by various environments (specifically, in
+% \nonfillstart and \quotations).
+\newskip\singlespaceskip \singlespaceskip = 12.5pt
+\def\singlespace{%
+ % Why was this kern here? It messes up equalizing space above and below
+ % environments. --karl, 6may93
+ %{\advance \baselineskip by -\singlespaceskip
+ %\kern \baselineskip}%
+ \setleading \singlespaceskip
+}
+
+%% Simple single-character @ commands
+
+% @@ prints an @
+% Kludge this until the fonts are right (grr).
+\def\@{{\tt \char '100}}
+
+% This is turned off because it was never documented
+% and you can use @w{...} around a quote to suppress ligatures.
+%% Define @` and @' to be the same as ` and '
+%% but suppressing ligatures.
+%\def\`{{`}}
+%\def\'{{'}}
+
+% Used to generate quoted braces.
+\def\mylbrace {{\tt \char '173}}
+\def\myrbrace {{\tt \char '175}}
+\let\{=\mylbrace
+\let\}=\myrbrace
+\begingroup
+ % Definitions to produce actual \{ & \} command in an index.
+ \catcode`\{ = 12 \catcode`\} = 12
+ \catcode`\[ = 1 \catcode`\] = 2
+ \catcode`\@ = 0 \catcode`\\ = 12
+ @gdef@lbracecmd[\{]%
+ @gdef@rbracecmd[\}]%
+@endgroup
+
+% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
+% Others are defined by plain TeX: @` @' @" @^ @~ @= @v @H.
+\let\, = \c
+\let\dotaccent = \.
+\def\ringaccent#1{{\accent23 #1}}
+\let\tieaccent = \t
+\let\ubaraccent = \b
+\let\udotaccent = \d
+
+% Other special characters: @questiondown @exclamdown
+% Plain TeX defines: @AA @AE @O @OE @L (and lowercase versions) @ss.
+\def\questiondown{?`}
+\def\exclamdown{!`}
+
+% Dotless i and dotless j, used for accents.
+\def\imacro{i}
+\def\jmacro{j}
+\def\dotless#1{%
+ \def\temp{#1}%
+ \ifx\temp\imacro \ptexi
+ \else\ifx\temp\jmacro \j
+ \else \errmessage{@dotless can be used only with i or j}%
+ \fi\fi
+}
+
+% @: forces normal size whitespace following.
+\def\:{\spacefactor=1000 }
+
+% @* forces a line break.
+\def\*{\hfil\break\hbox{}\ignorespaces}
+
+% @. is an end-of-sentence period.
+\def\.{.\spacefactor=3000 }
+
+% @enddots{} is an end-of-sentence ellipsis.
+\gdef\enddots{$\mathinner{\ldotp\ldotp\ldotp\ldotp}$\spacefactor=3000}
+
+% @! is an end-of-sentence bang.
+\gdef\!{!\spacefactor=3000 }
+
+% @? is an end-of-sentence query.
+\gdef\?{?\spacefactor=3000 }
+
+% @w prevents a word break. Without the \leavevmode, @w at the
+% beginning of a paragraph, when TeX is still in vertical mode, would
+% produce a whole line of output instead of starting the paragraph.
+\def\w#1{\leavevmode\hbox{#1}}
+
+% @group ... @end group forces ... to be all on one page, by enclosing
+% it in a TeX vbox. We use \vtop instead of \vbox to construct the box
+% to keep its height that of a normal line. According to the rules for
+% \topskip (p.114 of the TeXbook), the glue inserted is
+% max (\topskip - \ht (first item), 0). If that height is large,
+% therefore, no glue is inserted, and the space between the headline and
+% the text is small, which looks bad.
+%
+\def\group{\begingroup
+ \ifnum\catcode13=\active \else
+ \errhelp = \groupinvalidhelp
+ \errmessage{@group invalid in context where filling is enabled}%
+ \fi
+ %
+ % The \vtop we start below produces a box with normal height and large
+ % depth; thus, TeX puts \baselineskip glue before it, and (when the
+ % next line of text is done) \lineskip glue after it. (See p.82 of
+ % the TeXbook.) Thus, space below is not quite equal to space
+ % above. But it's pretty close.
+ \def\Egroup{%
+ \egroup % End the \vtop.
+ \endgroup % End the \group.
+ }%
+ %
+ \vtop\bgroup
+ % We have to put a strut on the last line in case the @group is in
+ % the midst of an example, rather than completely enclosing it.
+ % Otherwise, the interline space between the last line of the group
+ % and the first line afterwards is too small. But we can't put the
+ % strut in \Egroup, since there it would be on a line by itself.
+ % Hence this just inserts a strut at the beginning of each line.
+ \everypar = {\strut}%
+ %
+ % Since we have a strut on every line, we don't need any of TeX's
+ % normal interline spacing.
+ \offinterlineskip
+ %
+ % OK, but now we have to do something about blank
+ % lines in the input in @example-like environments, which normally
+ % just turn into \lisppar, which will insert no space now that we've
+ % turned off the interline space. Simplest is to make them be an
+ % empty paragraph.
+ \ifx\par\lisppar
+ \edef\par{\leavevmode \par}%
+ %
+ % Reset ^^M's definition to new definition of \par.
+ \obeylines
+ \fi
+ %
+ % Do @comment since we are called inside an environment such as
+ % @example, where each end-of-line in the input causes an
+ % end-of-line in the output. We don't want the end-of-line after
+ % the `@group' to put extra space in the output. Since @group
+ % should appear on a line by itself (according to the Texinfo
+ % manual), we don't worry about eating any user text.
+ \comment
+}
+%
+% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
+% message, so this ends up printing `@group can only ...'.
+%
+\newhelp\groupinvalidhelp{%
+group can only be used in environments such as @example,^^J%
+where each line of input produces a line of output.}
+
+% @need space-in-mils
+% forces a page break if there is not space-in-mils remaining.
+
+\newdimen\mil \mil=0.001in
+
+\def\need{\parsearg\needx}
+
+% Old definition--didn't work.
+%\def\needx #1{\par %
+%% This method tries to make TeX break the page naturally
+%% if the depth of the box does not fit.
+%{\baselineskip=0pt%
+%\vtop to #1\mil{\vfil}\kern -#1\mil\penalty 10000
+%\prevdepth=-1000pt
+%}}
+
+\def\needx#1{%
+ % Go into vertical mode, so we don't make a big box in the middle of a
+ % paragraph.
+ \par
+ %
+ % Don't add any leading before our big empty box, but allow a page
+ % break, since the best break might be right here.
+ \allowbreak
+ \nointerlineskip
+ \vtop to #1\mil{\vfil}%
+ %
+ % TeX does not even consider page breaks if a penalty added to the
+ % main vertical list is 10000 or more. But in order to see if the
+ % empty box we just added fits on the page, we must make it consider
+ % page breaks. On the other hand, we don't want to actually break the
+ % page after the empty box. So we use a penalty of 9999.
+ %
+ % There is an extremely small chance that TeX will actually break the
+ % page at this \penalty, if there are no other feasible breakpoints in
+ % sight. (If the user is using lots of big @group commands, which
+ % almost-but-not-quite fill up a page, TeX will have a hard time doing
+ % good page breaking, for example.) However, I could not construct an
+ % example where a page broke at this \penalty; if it happens in a real
+ % document, then we can reconsider our strategy.
+ \penalty9999
+ %
+ % Back up by the size of the box, whether we did a page break or not.
+ \kern -#1\mil
+ %
+ % Do not allow a page break right after this kern.
+ \nobreak
+}
+
+% @br forces paragraph break
+
+\let\br = \par
+
+% @dots{} output some dots
+
+\def\dots{$\ldots$}
+
+% @page forces the start of a new page
+
+\def\page{\par\vfill\supereject}
+
+% @exdent text....
+% outputs text on separate line in roman font, starting at standard page margin
+
+% This records the amount of indent in the innermost environment.
+% That's how much \exdent should take out.
+\newskip\exdentamount
+
+% This defn is used inside fill environments such as @defun.
+\def\exdent{\parsearg\exdentyyy}
+\def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
+
+% This defn is used inside nofill environments such as @example.
+\def\nofillexdent{\parsearg\nofillexdentyyy}
+\def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
+\leftline{\hskip\leftskip{\rm#1}}}}
+
+% @inmargin{TEXT} puts TEXT in the margin next to the current paragraph.
+
+\def\inmargin#1{%
+\strut\vadjust{\nobreak\kern-\strutdepth
+ \vtop to \strutdepth{\baselineskip\strutdepth\vss
+ \llap{\rightskip=\inmarginspacing \vbox{\noindent #1}}\null}}}
+\newskip\inmarginspacing \inmarginspacing=1cm
+\def\strutdepth{\dp\strutbox}
+
+%\hbox{{\rm#1}}\hfil\break}}
+
+% @include file insert text of that file as input.
+% Allow normal characters that we make active in the argument (a file name).
+\def\include{\begingroup
+ \catcode`\\=12
+ \catcode`~=12
+ \catcode`^=12
+ \catcode`_=12
+ \catcode`|=12
+ \catcode`<=12
+ \catcode`>=12
+ \catcode`+=12
+ \parsearg\includezzz}
+% Restore active chars for included file.
+\def\includezzz#1{\endgroup\begingroup
+ % Read the included file in a group so nested @include's work.
+ \def\thisfile{#1}%
+ \input\thisfile
+\endgroup}
+
+\def\thisfile{}
+
+% @center line outputs that line, centered
+
+\def\center{\parsearg\centerzzz}
+\def\centerzzz #1{{\advance\hsize by -\leftskip
+\advance\hsize by -\rightskip
+\centerline{#1}}}
+
+% @sp n outputs n lines of vertical space
+
+\def\sp{\parsearg\spxxx}
+\def\spxxx #1{\vskip #1\baselineskip}
+
+% @comment ...line which is ignored...
+% @c is the same as @comment
+% @ignore ... @end ignore is another way to write a comment
+
+\def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
+\parsearg \commentxxx}
+
+\def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
+
+\let\c=\comment
+
+% @paragraphindent is defined for the Info formatting commands only.
+\let\paragraphindent=\comment
+
+% Prevent errors for section commands.
+% Used in @ignore and in failing conditionals.
+\def\ignoresections{%
+\let\chapter=\relax
+\let\unnumbered=\relax
+\let\top=\relax
+\let\unnumberedsec=\relax
+\let\unnumberedsection=\relax
+\let\unnumberedsubsec=\relax
+\let\unnumberedsubsection=\relax
+\let\unnumberedsubsubsec=\relax
+\let\unnumberedsubsubsection=\relax
+\let\section=\relax
+\let\subsec=\relax
+\let\subsubsec=\relax
+\let\subsection=\relax
+\let\subsubsection=\relax
+\let\appendix=\relax
+\let\appendixsec=\relax
+\let\appendixsection=\relax
+\let\appendixsubsec=\relax
+\let\appendixsubsection=\relax
+\let\appendixsubsubsec=\relax
+\let\appendixsubsubsection=\relax
+\let\contents=\relax
+\let\smallbook=\relax
+\let\titlepage=\relax
+}
+
+% Used in nested conditionals, where we have to parse the Texinfo source
+% and so want to turn off most commands, in case they are used
+% incorrectly.
+%
+\def\ignoremorecommands{%
+ \let\defcodeindex = \relax
+ \let\defcv = \relax
+ \let\deffn = \relax
+ \let\deffnx = \relax
+ \let\defindex = \relax
+ \let\defivar = \relax
+ \let\defmac = \relax
+ \let\defmethod = \relax
+ \let\defop = \relax
+ \let\defopt = \relax
+ \let\defspec = \relax
+ \let\deftp = \relax
+ \let\deftypefn = \relax
+ \let\deftypefun = \relax
+ \let\deftypevar = \relax
+ \let\deftypevr = \relax
+ \let\defun = \relax
+ \let\defvar = \relax
+ \let\defvr = \relax
+ \let\ref = \relax
+ \let\xref = \relax
+ \let\printindex = \relax
+ \let\pxref = \relax
+ \let\settitle = \relax
+ \let\setchapternewpage = \relax
+ \let\setchapterstyle = \relax
+ \let\everyheading = \relax
+ \let\evenheading = \relax
+ \let\oddheading = \relax
+ \let\everyfooting = \relax
+ \let\evenfooting = \relax
+ \let\oddfooting = \relax
+ \let\headings = \relax
+ \let\include = \relax
+ \let\lowersections = \relax
+ \let\down = \relax
+ \let\raisesections = \relax
+ \let\up = \relax
+ \let\set = \relax
+ \let\clear = \relax
+ \let\item = \relax
+}
+
+% Ignore @ignore ... @end ignore.
+%
+\def\ignore{\doignore{ignore}}
+
+% Also ignore @ifinfo, @ifhtml, @html, @menu, and @direntry text.
+%
+\def\ifinfo{\doignore{ifinfo}}
+\def\ifhtml{\doignore{ifhtml}}
+\def\html{\doignore{html}}
+\def\menu{\doignore{menu}}
+\def\direntry{\doignore{direntry}}
+
+% Also ignore @macro ... @end macro. The user must run texi2dvi,
+% which runs makeinfo to do macro expansion. Ignore @unmacro, too.
+\def\macro{\doignore{macro}}
+\let\unmacro = \comment
+
+
+% @dircategory CATEGORY -- specify a category of the dir file
+% which this file should belong to. Ignore this in TeX.
+\let\dircategory = \comment
+
+% Ignore text until a line `@end #1'.
+%
+\def\doignore#1{\begingroup
+ % Don't complain about control sequences we have declared \outer.
+ \ignoresections
+ %
+ % Define a command to swallow text until we reach `@end #1'.
+ \long\def\doignoretext##1\end #1{\enddoignore}%
+ %
+ % Make sure that spaces turn into tokens that match what \doignoretext wants.
+ \catcode32 = 10
+ %
+ % And now expand that command.
+ \doignoretext
+}
+
+% What we do to finish off ignored text.
+%
+\def\enddoignore{\endgroup\ignorespaces}%
+
+\newif\ifwarnedobs\warnedobsfalse
+\def\obstexwarn{%
+ \ifwarnedobs\relax\else
+ % We need to warn folks that they may have trouble with TeX 3.0.
+ % This uses \immediate\write16 rather than \message to get newlines.
+ \immediate\write16{}
+ \immediate\write16{***WARNING*** for users of Unix TeX 3.0!}
+ \immediate\write16{This manual trips a bug in TeX version 3.0 (tex hangs).}
+ \immediate\write16{If you are running another version of TeX, relax.}
+ \immediate\write16{If you are running Unix TeX 3.0, kill this TeX process.}
+ \immediate\write16{ Then upgrade your TeX installation if you can.}
+ \immediate\write16{ (See ftp://ftp.gnu.ai.mit.edu/pub/gnu/TeX.README.)}
+ \immediate\write16{If you are stuck with version 3.0, run the}
+ \immediate\write16{ script ``tex3patch'' from the Texinfo distribution}
+ \immediate\write16{ to use a workaround.}
+ \immediate\write16{}
+ \global\warnedobstrue
+ \fi
+}
+
+% **In TeX 3.0, setting text in \nullfont hangs tex. For a
+% workaround (which requires the file ``dummy.tfm'' to be installed),
+% uncomment the following line:
+%%%%%\font\nullfont=dummy\let\obstexwarn=\relax
+
+% Ignore text, except that we keep track of conditional commands for
+% purposes of nesting, up to an `@end #1' command.
+%
+\def\nestedignore#1{%
+ \obstexwarn
+ % We must actually expand the ignored text to look for the @end
+ % command, so that nested ignore constructs work. Thus, we put the
+ % text into a \vbox and then do nothing with the result. To minimize
+ % the change of memory overflow, we follow the approach outlined on
+ % page 401 of the TeXbook: make the current font be a dummy font.
+ %
+ \setbox0 = \vbox\bgroup
+ % Don't complain about control sequences we have declared \outer.
+ \ignoresections
+ %
+ % Define `@end #1' to end the box, which will in turn undefine the
+ % @end command again.
+ \expandafter\def\csname E#1\endcsname{\egroup\ignorespaces}%
+ %
+ % We are going to be parsing Texinfo commands. Most cause no
+ % trouble when they are used incorrectly, but some commands do
+ % complicated argument parsing or otherwise get confused, so we
+ % undefine them.
+ %
+ % We can't do anything about stray @-signs, unfortunately;
+ % they'll produce `undefined control sequence' errors.
+ \ignoremorecommands
+ %
+ % Set the current font to be \nullfont, a TeX primitive, and define
+ % all the font commands to also use \nullfont. We don't use
+ % dummy.tfm, as suggested in the TeXbook, because not all sites
+ % might have that installed. Therefore, math mode will still
+ % produce output, but that should be an extremely small amount of
+ % stuff compared to the main input.
+ %
+ \nullfont
+ \let\tenrm = \nullfont \let\tenit = \nullfont \let\tensl = \nullfont
+ \let\tenbf = \nullfont \let\tentt = \nullfont \let\smallcaps = \nullfont
+ \let\tensf = \nullfont
+ % Similarly for index fonts (mostly for their use in
+ % smallexample)
+ \let\indrm = \nullfont \let\indit = \nullfont \let\indsl = \nullfont
+ \let\indbf = \nullfont \let\indtt = \nullfont \let\indsc = \nullfont
+ \let\indsf = \nullfont
+ %
+ % Don't complain when characters are missing from the fonts.
+ \tracinglostchars = 0
+ %
+ % Don't bother to do space factor calculations.
+ \frenchspacing
+ %
+ % Don't report underfull hboxes.
+ \hbadness = 10000
+ %
+ % Do minimal line-breaking.
+ \pretolerance = 10000
+ %
+ % Do not execute instructions in @tex
+ \def\tex{\doignore{tex}}
+}
+
+% @set VAR sets the variable VAR to an empty value.
+% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
+%
+% Since we want to separate VAR from REST-OF-LINE (which might be
+% empty), we can't just use \parsearg; we have to insert a space of our
+% own to delimit the rest of the line, and then take it out again if we
+% didn't need it. Make sure the catcode of space is correct to avoid
+% losing inside @example, for instance.
+%
+\def\set{\begingroup\catcode` =10 \parsearg\setxxx}
+\def\setxxx#1{\setyyy#1 \endsetyyy}
+\def\setyyy#1 #2\endsetyyy{%
+ \def\temp{#2}%
+ \ifx\temp\empty \global\expandafter\let\csname SET#1\endcsname = \empty
+ \else \setzzz{#1}#2\endsetzzz % Remove the trailing space \setxxx inserted.
+ \fi
+ \endgroup
+}
+% Can't use \xdef to pre-expand #2 and save some time, since \temp or
+% \next or other control sequences that we've defined might get us into
+% an infinite loop. Consider `@set foo @cite{bar}'.
+\def\setzzz#1#2 \endsetzzz{\expandafter\gdef\csname SET#1\endcsname{#2}}
+
+% @clear VAR clears (i.e., unsets) the variable VAR.
+%
+\def\clear{\parsearg\clearxxx}
+\def\clearxxx#1{\global\expandafter\let\csname SET#1\endcsname=\relax}
+
+% @value{foo} gets the text saved in variable foo.
+%
+\def\value#1{\expandafter
+ \ifx\csname SET#1\endcsname\relax
+ {\{No value for ``#1''\}}
+ \else \csname SET#1\endcsname \fi}
+
+% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
+% with @set.
+%
+\def\ifset{\parsearg\ifsetxxx}
+\def\ifsetxxx #1{%
+ \expandafter\ifx\csname SET#1\endcsname\relax
+ \expandafter\ifsetfail
+ \else
+ \expandafter\ifsetsucceed
+ \fi
+}
+\def\ifsetsucceed{\conditionalsucceed{ifset}}
+\def\ifsetfail{\nestedignore{ifset}}
+\defineunmatchedend{ifset}
+
+% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
+% defined with @set, or has been undefined with @clear.
+%
+\def\ifclear{\parsearg\ifclearxxx}
+\def\ifclearxxx #1{%
+ \expandafter\ifx\csname SET#1\endcsname\relax
+ \expandafter\ifclearsucceed
+ \else
+ \expandafter\ifclearfail
+ \fi
+}
+\def\ifclearsucceed{\conditionalsucceed{ifclear}}
+\def\ifclearfail{\nestedignore{ifclear}}
+\defineunmatchedend{ifclear}
+
+% @iftex always succeeds; we read the text following, through @end
+% iftex). But `@end iftex' should be valid only after an @iftex.
+%
+\def\iftex{\conditionalsucceed{iftex}}
+\defineunmatchedend{iftex}
+
+% We can't just want to start a group at @iftex (for example) and end it
+% at @end iftex, since then @set commands inside the conditional have no
+% effect (they'd get reverted at the end of the group). So we must
+% define \Eiftex to redefine itself to be its previous value. (We can't
+% just define it to fail again with an ``unmatched end'' error, since
+% the @ifset might be nested.)
+%
+\def\conditionalsucceed#1{%
+ \edef\temp{%
+ % Remember the current value of \E#1.
+ \let\nece{prevE#1} = \nece{E#1}%
+ %
+ % At the `@end #1', redefine \E#1 to be its previous value.
+ \def\nece{E#1}{\let\nece{E#1} = \nece{prevE#1}}%
+ }%
+ \temp
+}
+
+% We need to expand lots of \csname's, but we don't want to expand the
+% control sequences after we've constructed them.
+%
+\def\nece#1{\expandafter\noexpand\csname#1\endcsname}
+
+% @asis just yields its argument. Used with @table, for example.
+%
+\def\asis#1{#1}
+
+% @math means output in math mode.
+% We don't use $'s directly in the definition of \math because control
+% sequences like \math are expanded when the toc file is written. Then,
+% we read the toc file back, the $'s will be normal characters (as they
+% should be, according to the definition of Texinfo). So we must use a
+% control sequence to switch into and out of math mode.
+%
+% This isn't quite enough for @math to work properly in indices, but it
+% seems unlikely it will ever be needed there.
+%
+\let\implicitmath = $
+\def\math#1{\implicitmath #1\implicitmath}
+
+% @bullet and @minus need the same treatment as @math, just above.
+\def\bullet{\implicitmath\ptexbullet\implicitmath}
+\def\minus{\implicitmath-\implicitmath}
+
+\def\node{\ENVcheck\parsearg\nodezzz}
+\def\nodezzz#1{\nodexxx [#1,]}
+\def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
+\let\nwnode=\node
+\let\lastnode=\relax
+
+\def\donoderef{\ifx\lastnode\relax\else
+\expandafter\expandafter\expandafter\setref{\lastnode}\fi
+\global\let\lastnode=\relax}
+
+\def\unnumbnoderef{\ifx\lastnode\relax\else
+\expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
+\global\let\lastnode=\relax}
+
+\def\appendixnoderef{\ifx\lastnode\relax\else
+\expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
+\global\let\lastnode=\relax}
+
+% @refill is a no-op.
+\let\refill=\relax
+
+% @setfilename is done at the beginning of every texinfo file.
+% So open here the files we need to have open while reading the input.
+% This makes it possible to make a .fmt file for texinfo.
+\def\setfilename{%
+ \readauxfile
+ \opencontents
+ \openindices
+ \fixbackslash % Turn off hack to swallow `\input texinfo'.
+ \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
+ \comment % Ignore the actual filename.
+}
+
+% @bye.
+\outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
+
+% \def\macro#1{\begingroup\ignoresections\catcode`\#=6\def\macrotemp{#1}\parsearg\macroxxx}
+% \def\macroxxx#1#2 \end macro{%
+% \expandafter\gdef\macrotemp#1{#2}%
+% \endgroup}
+
+%\def\linemacro#1{\begingroup\ignoresections\catcode`\#=6\def\macrotemp{#1}\parsearg\linemacroxxx}
+%\def\linemacroxxx#1#2 \end linemacro{%
+%\let\parsearg=\relax
+%\edef\macrotempx{\csname M\butfirst\expandafter\string\macrotemp\endcsname}%
+%\expandafter\xdef\macrotemp{\parsearg\macrotempx}%
+%\expandafter\gdef\macrotempx#1{#2}%
+%\endgroup}
+
+%\def\butfirst#1{}
+
+
+\message{fonts,}
+
+% Font-change commands.
+
+% Texinfo supports the sans serif font style, which plain TeX does not.
+% So we set up a \sf analogous to plain's \rm, etc.
+\newfam\sffam
+\def\sf{\fam=\sffam \tensf}
+\let\li = \sf % Sometimes we call it \li, not \sf.
+
+% We don't need math for this one.
+\def\ttsl{\tenttsl}
+
+%% Try out Computer Modern fonts at \magstephalf
+\let\mainmagstep=\magstephalf
+
+% Set the font macro #1 to the font named #2, adding on the
+% specified font prefix (normally `cm').
+% #3 is the font's design size, #4 is a scale factor
+\def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
+
+% Use cm as the default font prefix.
+% To specify the font prefix, you must define \fontprefix
+% before you read in texinfo.tex.
+\ifx\fontprefix\undefined
+\def\fontprefix{cm}
+\fi
+% Support font families that don't use the same naming scheme as CM.
+\def\rmshape{r}
+\def\rmbshape{bx} %where the normal face is bold
+\def\bfshape{b}
+\def\bxshape{bx}
+\def\ttshape{tt}
+\def\ttbshape{tt}
+\def\ttslshape{sltt}
+\def\itshape{ti}
+\def\itbshape{bxti}
+\def\slshape{sl}
+\def\slbshape{bxsl}
+\def\sfshape{ss}
+\def\sfbshape{ss}
+\def\scshape{csc}
+\def\scbshape{csc}
+
+\ifx\bigger\relax
+\let\mainmagstep=\magstep1
+\setfont\textrm\rmshape{12}{1000}
+\setfont\texttt\ttshape{12}{1000}
+\else
+\setfont\textrm\rmshape{10}{\mainmagstep}
+\setfont\texttt\ttshape{10}{\mainmagstep}
+\fi
+% Instead of cmb10, you many want to use cmbx10.
+% cmbx10 is a prettier font on its own, but cmb10
+% looks better when embedded in a line with cmr10.
+\setfont\textbf\bfshape{10}{\mainmagstep}
+\setfont\textit\itshape{10}{\mainmagstep}
+\setfont\textsl\slshape{10}{\mainmagstep}
+\setfont\textsf\sfshape{10}{\mainmagstep}
+\setfont\textsc\scshape{10}{\mainmagstep}
+\setfont\textttsl\ttslshape{10}{\mainmagstep}
+\font\texti=cmmi10 scaled \mainmagstep
+\font\textsy=cmsy10 scaled \mainmagstep
+
+% A few fonts for @defun, etc.
+\setfont\defbf\bxshape{10}{\magstep1} %was 1314
+\setfont\deftt\ttshape{10}{\magstep1}
+\def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
+
+% Fonts for indices and small examples (9pt).
+% We actually use the slanted font rather than the italic,
+% because texinfo normally uses the slanted fonts for that.
+% Do not make many font distinctions in general in the index, since they
+% aren't very useful.
+\setfont\ninett\ttshape{9}{1000}
+\setfont\indrm\rmshape{9}{1000}
+\setfont\indit\slshape{9}{1000}
+\let\indsl=\indit
+\let\indtt=\ninett
+\let\indttsl=\ninett
+\let\indsf=\indrm
+\let\indbf=\indrm
+\setfont\indsc\scshape{10}{900}
+\font\indi=cmmi9
+\font\indsy=cmsy9
+
+% Chapter (and unnumbered) fonts (17.28pt).
+\setfont\chaprm\rmbshape{12}{\magstep2}
+\setfont\chapit\itbshape{10}{\magstep3}
+\setfont\chapsl\slbshape{10}{\magstep3}
+\setfont\chaptt\ttbshape{12}{\magstep2}
+\setfont\chapttsl\ttslshape{10}{\magstep3}
+\setfont\chapsf\sfbshape{12}{\magstep2}
+\let\chapbf=\chaprm
+\setfont\chapsc\scbshape{10}{\magstep3}
+\font\chapi=cmmi12 scaled \magstep2
+\font\chapsy=cmsy10 scaled \magstep3
+
+% Section fonts (14.4pt).
+\setfont\secrm\rmbshape{12}{\magstep1}
+\setfont\secit\itbshape{10}{\magstep2}
+\setfont\secsl\slbshape{10}{\magstep2}
+\setfont\sectt\ttbshape{12}{\magstep1}
+\setfont\secttsl\ttslshape{10}{\magstep2}
+\setfont\secsf\sfbshape{12}{\magstep1}
+\let\secbf\secrm
+\setfont\secsc\scbshape{10}{\magstep2}
+\font\seci=cmmi12 scaled \magstep1
+\font\secsy=cmsy10 scaled \magstep2
+
+% \setfont\ssecrm\bxshape{10}{\magstep1} % This size an font looked bad.
+% \setfont\ssecit\itshape{10}{\magstep1} % The letters were too crowded.
+% \setfont\ssecsl\slshape{10}{\magstep1}
+% \setfont\ssectt\ttshape{10}{\magstep1}
+% \setfont\ssecsf\sfshape{10}{\magstep1}
+
+%\setfont\ssecrm\bfshape{10}{1315} % Note the use of cmb rather than cmbx.
+%\setfont\ssecit\itshape{10}{1315} % Also, the size is a little larger than
+%\setfont\ssecsl\slshape{10}{1315} % being scaled magstep1.
+%\setfont\ssectt\ttshape{10}{1315}
+%\setfont\ssecsf\sfshape{10}{1315}
+
+%\let\ssecbf=\ssecrm
+
+% Subsection fonts (13.15pt).
+\setfont\ssecrm\rmbshape{12}{\magstephalf}
+\setfont\ssecit\itbshape{10}{1315}
+\setfont\ssecsl\slbshape{10}{1315}
+\setfont\ssectt\ttbshape{12}{\magstephalf}
+\setfont\ssecttsl\ttslshape{10}{\magstep1}
+\setfont\ssecsf\sfbshape{12}{\magstephalf}
+\let\ssecbf\ssecrm
+\setfont\ssecsc\scbshape{10}{\magstep1}
+\font\sseci=cmmi12 scaled \magstephalf
+\font\ssecsy=cmsy10 scaled \magstep1
+% The smallcaps and symbol fonts should actually be scaled \magstep1.5,
+% but that is not a standard magnification.
+
+% Fonts for title page:
+\setfont\titlerm\rmbshape{12}{\magstep3}
+\let\authorrm = \secrm
+
+% In order for the font changes to affect most math symbols and letters,
+% we have to define the \textfont of the standard families. Since
+% texinfo doesn't allow for producing subscripts and superscripts, we
+% don't bother to reset \scriptfont and \scriptscriptfont (which would
+% also require loading a lot more fonts).
+%
+\def\resetmathfonts{%
+ \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
+ \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
+ \textfont\ttfam = \tentt \textfont\sffam = \tensf
+}
+
+
+% The font-changing commands redefine the meanings of \tenSTYLE, instead
+% of just \STYLE. We do this so that font changes will continue to work
+% in math mode, where it is the current \fam that is relevant in most
+% cases, not the current font. Plain TeX does \def\bf{\fam=\bffam
+% \tenbf}, for example. By redefining \tenbf, we obviate the need to
+% redefine \bf itself.
+\def\textfonts{%
+ \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
+ \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
+ \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy \let\tenttsl=\textttsl
+ \resetmathfonts}
+\def\chapfonts{%
+ \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
+ \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
+ \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
+ \resetmathfonts \setleading{19pt}}
+\def\secfonts{%
+ \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
+ \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
+ \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy \let\tenttsl=\secttsl
+ \resetmathfonts \setleading{16pt}}
+\def\subsecfonts{%
+ \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
+ \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
+ \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy \let\tenttsl=\ssecttsl
+ \resetmathfonts \setleading{15pt}}
+\let\subsubsecfonts = \subsecfonts % Maybe make sssec fonts scaled magstephalf?
+\def\indexfonts{%
+ \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
+ \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
+ \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy \let\tenttsl=\indttsl
+ \resetmathfonts \setleading{12pt}}
+
+% Set up the default fonts, so we can use them for creating boxes.
+%
+\textfonts
+
+% Count depth in font-changes, for error checks
+\newcount\fontdepth \fontdepth=0
+
+% Fonts for short table of contents.
+\setfont\shortcontrm\rmshape{12}{1000}
+\setfont\shortcontbf\bxshape{12}{1000}
+\setfont\shortcontsl\slshape{12}{1000}
+
+%% Add scribe-like font environments, plus @l for inline lisp (usually sans
+%% serif) and @ii for TeX italic
+
+% \smartitalic{ARG} outputs arg in italics, followed by an italic correction
+% unless the following character is such as not to need one.
+\def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
+\def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
+
+\let\i=\smartitalic
+\let\var=\smartitalic
+\let\dfn=\smartitalic
+\let\emph=\smartitalic
+\let\cite=\smartitalic
+
+\def\b#1{{\bf #1}}
+\let\strong=\b
+
+% We can't just use \exhyphenpenalty, because that only has effect at
+% the end of a paragraph. Restore normal hyphenation at the end of the
+% group within which \nohyphenation is presumably called.
+%
+\def\nohyphenation{\hyphenchar\font = -1 \aftergroup\restorehyphenation}
+\def\restorehyphenation{\hyphenchar\font = `- }
+
+\def\t#1{%
+ {\tt \rawbackslash \frenchspacing #1}%
+ \null
+}
+\let\ttfont=\t
+\def\samp #1{`\tclose{#1}'\null}
+\setfont\smallrm\rmshape{8}{1000}
+\font\smallsy=cmsy9
+\def\key#1{{\smallrm\textfont2=\smallsy \leavevmode\hbox{%
+ \raise0.4pt\hbox{$\langle$}\kern-.08em\vtop{%
+ \vbox{\hrule\kern-0.4pt
+ \hbox{\raise0.4pt\hbox{\vphantom{$\langle$}}#1}}%
+ \kern-0.4pt\hrule}%
+ \kern-.06em\raise0.4pt\hbox{$\rangle$}}}}
+% The old definition, with no lozenge:
+%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
+\def\ctrl #1{{\tt \rawbackslash \hat}#1}
+
+\let\file=\samp
+\let\url=\samp % perhaps include a hypertex \special eventually
+\def\email#1{$\langle${\tt #1}$\rangle$}
+
+% @code is a modification of @t,
+% which makes spaces the same size as normal in the surrounding text.
+\def\tclose#1{%
+ {%
+ % Change normal interword space to be same as for the current font.
+ \spaceskip = \fontdimen2\font
+ %
+ % Switch to typewriter.
+ \tt
+ %
+ % But `\ ' produces the large typewriter interword space.
+ \def\ {{\spaceskip = 0pt{} }}%
+ %
+ % Turn off hyphenation.
+ \nohyphenation
+ %
+ \rawbackslash
+ \frenchspacing
+ #1%
+ }%
+ \null
+}
+
+% We *must* turn on hyphenation at `-' and `_' in \code.
+% Otherwise, it is too hard to avoid overfull hboxes
+% in the Emacs manual, the Library manual, etc.
+
+% Unfortunately, TeX uses one parameter (\hyphenchar) to control
+% both hyphenation at - and hyphenation within words.
+% We must therefore turn them both off (\tclose does that)
+% and arrange explicitly to hyphenate at a dash.
+% -- rms.
+{
+\catcode`\-=\active
+\catcode`\_=\active
+\global\def\code{\begingroup \catcode`\-=\active \let-\codedash \catcode`\_=\active \let_\codeunder \codex}
+% The following is used by \doprintindex to insure that long function names
+% wrap around. It is necessary for - and _ to be active before the index is
+% read from the file, as \entry parses the arguments long before \code is
+% ever called. -- mycroft
+\global\def\indexbreaks{\catcode`\-=\active \let-\realdash \catcode`\_=\active \let_\realunder}
+}
+
+\def\realdash{-}
+\def\realunder{_}
+\def\codedash{-\discretionary{}{}{}}
+\def\codeunder{\normalunderscore\discretionary{}{}{}}
+\def\codex #1{\tclose{#1}\endgroup}
+
+%\let\exp=\tclose %Was temporary
+
+% @kbd is like @code, except that if the argument is just one @key command,
+% then @kbd has no effect.
+%
+\def\xkey{\key}
+\def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
+\ifx\one\xkey\ifx\threex\three \key{#2}%
+\else{\tclose{\ttsl\look}}\fi
+\else{\tclose{\ttsl\look}}\fi}
+
+% Check if we are currently using a typewriter font. Since all the
+% Computer Modern typewriter fonts have zero interword stretch (and
+% shrink), and it is reasonable to expect all typewriter fonts to have
+% this property, we can check that font parameter.
+%
+\def\ifmonospace{\ifdim\fontdimen3\font=0pt }
+
+% Typeset a dimension, e.g., `in' or `pt'. The only reason for the
+% argument is to make the input look right: @dmn{pt} instead of
+% @dmn{}pt.
+%
+\def\dmn#1{\thinspace #1}
+
+\def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
+
+% @l was never documented to mean ``switch to the Lisp font'',
+% and it is not used as such in any manual I can find. We need it for
+% Polish suppressed-l. --karl, 22sep96.
+%\def\l#1{{\li #1}\null}
+
+\def\r#1{{\rm #1}} % roman font
+% Use of \lowercase was suggested.
+\def\sc#1{{\smallcaps#1}} % smallcaps font
+\def\ii#1{{\it #1}} % italic font
+
+% @pounds{} is a sterling sign.
+\def\pounds{{\it\$}}
+
+
+\message{page headings,}
+
+\newskip\titlepagetopglue \titlepagetopglue = 1.5in
+\newskip\titlepagebottomglue \titlepagebottomglue = 2pc
+
+% First the title page. Must do @settitle before @titlepage.
+\def\titlefont#1{{\titlerm #1}}
+
+\newif\ifseenauthor
+\newif\iffinishedtitlepage
+
+\def\shorttitlepage{\parsearg\shorttitlepagezzz}
+\def\shorttitlepagezzz #1{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
+ \endgroup\page\hbox{}\page}
+
+\def\titlepage{\begingroup \parindent=0pt \textfonts
+ \let\subtitlerm=\tenrm
+% I deinstalled the following change because \cmr12 is undefined.
+% This change was not in the ChangeLog anyway. --rms.
+% \let\subtitlerm=\cmr12
+ \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
+ %
+ \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
+ %
+ % Leave some space at the very top of the page.
+ \vglue\titlepagetopglue
+ %
+ % Now you can print the title using @title.
+ \def\title{\parsearg\titlezzz}%
+ \def\titlezzz##1{\leftline{\titlefont{##1}}
+ % print a rule at the page bottom also.
+ \finishedtitlepagefalse
+ \vskip4pt \hrule height 4pt width \hsize \vskip4pt}%
+ % No rule at page bottom unless we print one at the top with @title.
+ \finishedtitlepagetrue
+ %
+ % Now you can put text using @subtitle.
+ \def\subtitle{\parsearg\subtitlezzz}%
+ \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
+ %
+ % @author should come last, but may come many times.
+ \def\author{\parsearg\authorzzz}%
+ \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
+ {\authorfont \leftline{##1}}}%
+ %
+ % Most title ``pages'' are actually two pages long, with space
+ % at the top of the second. We don't want the ragged left on the second.
+ \let\oldpage = \page
+ \def\page{%
+ \iffinishedtitlepage\else
+ \finishtitlepage
+ \fi
+ \oldpage
+ \let\page = \oldpage
+ \hbox{}}%
+% \def\page{\oldpage \hbox{}}
+}
+
+\def\Etitlepage{%
+ \iffinishedtitlepage\else
+ \finishtitlepage
+ \fi
+ % It is important to do the page break before ending the group,
+ % because the headline and footline are only empty inside the group.
+ % If we use the new definition of \page, we always get a blank page
+ % after the title page, which we certainly don't want.
+ \oldpage
+ \endgroup
+ \HEADINGSon
+}
+
+\def\finishtitlepage{%
+ \vskip4pt \hrule height 2pt width \hsize
+ \vskip\titlepagebottomglue
+ \finishedtitlepagetrue
+}
+
+%%% Set up page headings and footings.
+
+\let\thispage=\folio
+
+\newtoks \evenheadline % Token sequence for heading line of even pages
+\newtoks \oddheadline % Token sequence for heading line of odd pages
+\newtoks \evenfootline % Token sequence for footing line of even pages
+\newtoks \oddfootline % Token sequence for footing line of odd pages
+
+% Now make Tex use those variables
+\headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
+ \else \the\evenheadline \fi}}
+\footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
+ \else \the\evenfootline \fi}\HEADINGShook}
+\let\HEADINGShook=\relax
+
+% Commands to set those variables.
+% For example, this is what @headings on does
+% @evenheading @thistitle|@thispage|@thischapter
+% @oddheading @thischapter|@thispage|@thistitle
+% @evenfooting @thisfile||
+% @oddfooting ||@thisfile
+
+\def\evenheading{\parsearg\evenheadingxxx}
+\def\oddheading{\parsearg\oddheadingxxx}
+\def\everyheading{\parsearg\everyheadingxxx}
+
+\def\evenfooting{\parsearg\evenfootingxxx}
+\def\oddfooting{\parsearg\oddfootingxxx}
+\def\everyfooting{\parsearg\everyfootingxxx}
+
+{\catcode`\@=0 %
+
+\gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
+\gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
+\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
+\gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
+\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
+\gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
+\global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
+\global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
+\gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
+\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
+\gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
+\global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+
+\gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
+\gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
+\global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
+\global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
+%
+}% unbind the catcode of @.
+
+% @headings double turns headings on for double-sided printing.
+% @headings single turns headings on for single-sided printing.
+% @headings off turns them off.
+% @headings on same as @headings double, retained for compatibility.
+% @headings after turns on double-sided headings after this page.
+% @headings doubleafter turns on double-sided headings after this page.
+% @headings singleafter turns on single-sided headings after this page.
+% By default, they are off at the start of a document,
+% and turned `on' after @end titlepage.
+
+\def\headings #1 {\csname HEADINGS#1\endcsname}
+
+\def\HEADINGSoff{
+\global\evenheadline={\hfil} \global\evenfootline={\hfil}
+\global\oddheadline={\hfil} \global\oddfootline={\hfil}}
+\HEADINGSoff
+% When we turn headings on, set the page number to 1.
+% For double-sided printing, put current file name in lower left corner,
+% chapter name on inside top of right hand pages, document
+% title on inside top of left hand pages, and page numbers on outside top
+% edge of all pages.
+\def\HEADINGSdouble{
+\global\pageno=1
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\folio\hfil\thistitle}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
+}
+\let\contentsalignmacro = \chappager
+
+% For single-sided printing, chapter title goes across top left of page,
+% page number on top right.
+\def\HEADINGSsingle{
+\global\pageno=1
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
+}
+\def\HEADINGSon{\HEADINGSdouble}
+
+\def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
+\let\HEADINGSdoubleafter=\HEADINGSafter
+\def\HEADINGSdoublex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\folio\hfil\thistitle}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
+}
+
+\def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
+\def\HEADINGSsinglex{%
+\global\evenfootline={\hfil}
+\global\oddfootline={\hfil}
+\global\evenheadline={\line{\thischapter\hfil\folio}}
+\global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
+}
+
+% Subroutines used in generating headings
+% Produces Day Month Year style of output.
+\def\today{\number\day\space
+\ifcase\month\or
+January\or February\or March\or April\or May\or June\or
+July\or August\or September\or October\or November\or December\fi
+\space\number\year}
+
+% Use this if you want the Month Day, Year style of output.
+%\def\today{\ifcase\month\or
+%January\or February\or March\or April\or May\or June\or
+%July\or August\or September\or October\or November\or December\fi
+%\space\number\day, \number\year}
+
+% @settitle line... specifies the title of the document, for headings
+% It generates no output of its own
+
+\def\thistitle{No Title}
+\def\settitle{\parsearg\settitlezzz}
+\def\settitlezzz #1{\gdef\thistitle{#1}}
+
+
+\message{tables,}
+
+% @tabs -- simple alignment
+
+% These don't work. For one thing, \+ is defined as outer.
+% So these macros cannot even be defined.
+
+%\def\tabs{\parsearg\tabszzz}
+%\def\tabszzz #1{\settabs\+#1\cr}
+%\def\tabline{\parsearg\tablinezzz}
+%\def\tablinezzz #1{\+#1\cr}
+%\def\&{&}
+
+% Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
+
+% default indentation of table text
+\newdimen\tableindent \tableindent=.8in
+% default indentation of @itemize and @enumerate text
+\newdimen\itemindent \itemindent=.3in
+% margin between end of table item and start of table text.
+\newdimen\itemmargin \itemmargin=.1in
+
+% used internally for \itemindent minus \itemmargin
+\newdimen\itemmax
+
+% Note @table, @vtable, and @vtable define @item, @itemx, etc., with
+% these defs.
+% They also define \itemindex
+% to index the item name in whatever manner is desired (perhaps none).
+
+\newif\ifitemxneedsnegativevskip
+
+\def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
+
+\def\internalBitem{\smallbreak \parsearg\itemzzz}
+\def\internalBitemx{\itemxpar \parsearg\itemzzz}
+
+\def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
+\def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \itemxpar \parsearg\xitemzzz}
+
+\def\internalBkitem{\smallbreak \parsearg\kitemzzz}
+\def\internalBkitemx{\itemxpar \parsearg\kitemzzz}
+
+\def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
+ \itemzzz {#1}}
+
+\def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
+ \itemzzz {#1}}
+
+\def\itemzzz #1{\begingroup %
+ \advance\hsize by -\rightskip
+ \advance\hsize by -\tableindent
+ \setbox0=\hbox{\itemfont{#1}}%
+ \itemindex{#1}%
+ \nobreak % This prevents a break before @itemx.
+ %
+ % Be sure we are not still in the middle of a paragraph.
+ %{\parskip = 0in
+ %\par
+ %}%
+ %
+ % If the item text does not fit in the space we have, put it on a line
+ % by itself, and do not allow a page break either before or after that
+ % line. We do not start a paragraph here because then if the next
+ % command is, e.g., @kindex, the whatsit would get put into the
+ % horizontal list on a line by itself, resulting in extra blank space.
+ \ifdim \wd0>\itemmax
+ %
+ % Make this a paragraph so we get the \parskip glue and wrapping,
+ % but leave it ragged-right.
+ \begingroup
+ \advance\leftskip by-\tableindent
+ \advance\hsize by\tableindent
+ \advance\rightskip by0pt plus1fil
+ \leavevmode\unhbox0\par
+ \endgroup
+ %
+ % We're going to be starting a paragraph, but we don't want the
+ % \parskip glue -- logically it's part of the @item we just started.
+ \nobreak \vskip-\parskip
+ %
+ % Stop a page break at the \parskip glue coming up. Unfortunately
+ % we can't prevent a possible page break at the following
+ % \baselineskip glue.
+ \nobreak
+ \endgroup
+ \itemxneedsnegativevskipfalse
+ \else
+ % The item text fits into the space. Start a paragraph, so that the
+ % following text (if any) will end up on the same line. Since that
+ % text will be indented by \tableindent, we make the item text be in
+ % a zero-width box.
+ \noindent
+ \rlap{\hskip -\tableindent\box0}\ignorespaces%
+ \endgroup%
+ \itemxneedsnegativevskiptrue%
+ \fi
+}
+
+\def\item{\errmessage{@item while not in a table}}
+\def\itemx{\errmessage{@itemx while not in a table}}
+\def\kitem{\errmessage{@kitem while not in a table}}
+\def\kitemx{\errmessage{@kitemx while not in a table}}
+\def\xitem{\errmessage{@xitem while not in a table}}
+\def\xitemx{\errmessage{@xitemx while not in a table}}
+
+%% Contains a kludge to get @end[description] to work
+\def\description{\tablez{\dontindex}{1}{}{}{}{}}
+
+\def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
+{\obeylines\obeyspaces%
+\gdef\tablex #1^^M{%
+\tabley\dontindex#1 \endtabley}}
+
+\def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
+{\obeylines\obeyspaces%
+\gdef\ftablex #1^^M{%
+\tabley\fnitemindex#1 \endtabley
+\def\Eftable{\endgraf\afterenvbreak\endgroup}%
+\let\Etable=\relax}}
+
+\def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
+{\obeylines\obeyspaces%
+\gdef\vtablex #1^^M{%
+\tabley\vritemindex#1 \endtabley
+\def\Evtable{\endgraf\afterenvbreak\endgroup}%
+\let\Etable=\relax}}
+
+\def\dontindex #1{}
+\def\fnitemindex #1{\doind {fn}{\code{#1}}}%
+\def\vritemindex #1{\doind {vr}{\code{#1}}}%
+
+{\obeyspaces %
+\gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
+\tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
+
+\def\tablez #1#2#3#4#5#6{%
+\aboveenvbreak %
+\begingroup %
+\def\Edescription{\Etable}% Necessary kludge.
+\let\itemindex=#1%
+\ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
+\ifnum 0#4>0 \tableindent=#4\mil \fi %
+\ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
+\def\itemfont{#2}%
+\itemmax=\tableindent %
+\advance \itemmax by -\itemmargin %
+\advance \leftskip by \tableindent %
+\exdentamount=\tableindent
+\parindent = 0pt
+\parskip = \smallskipamount
+\ifdim \parskip=0pt \parskip=2pt \fi%
+\def\Etable{\endgraf\afterenvbreak\endgroup}%
+\let\item = \internalBitem %
+\let\itemx = \internalBitemx %
+\let\kitem = \internalBkitem %
+\let\kitemx = \internalBkitemx %
+\let\xitem = \internalBxitem %
+\let\xitemx = \internalBxitemx %
+}
+
+% This is the counter used by @enumerate, which is really @itemize
+
+\newcount \itemno
+
+\def\itemize{\parsearg\itemizezzz}
+
+\def\itemizezzz #1{%
+ \begingroup % ended by the @end itemsize
+ \itemizey {#1}{\Eitemize}
+}
+
+\def\itemizey #1#2{%
+\aboveenvbreak %
+\itemmax=\itemindent %
+\advance \itemmax by -\itemmargin %
+\advance \leftskip by \itemindent %
+\exdentamount=\itemindent
+\parindent = 0pt %
+\parskip = \smallskipamount %
+\ifdim \parskip=0pt \parskip=2pt \fi%
+\def#2{\endgraf\afterenvbreak\endgroup}%
+\def\itemcontents{#1}%
+\let\item=\itemizeitem}
+
+% Set sfcode to normal for the chars that usually have another value.
+% These are `.?!:;,'
+\def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
+ \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
+
+% \splitoff TOKENS\endmark defines \first to be the first token in
+% TOKENS, and \rest to be the remainder.
+%
+\def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
+
+% Allow an optional argument of an uppercase letter, lowercase letter,
+% or number, to specify the first label in the enumerated list. No
+% argument is the same as `1'.
+%
+\def\enumerate{\parsearg\enumeratezzz}
+\def\enumeratezzz #1{\enumeratey #1 \endenumeratey}
+\def\enumeratey #1 #2\endenumeratey{%
+ \begingroup % ended by the @end enumerate
+ %
+ % If we were given no argument, pretend we were given `1'.
+ \def\thearg{#1}%
+ \ifx\thearg\empty \def\thearg{1}\fi
+ %
+ % Detect if the argument is a single token. If so, it might be a
+ % letter. Otherwise, the only valid thing it can be is a number.
+ % (We will always have one token, because of the test we just made.
+ % This is a good thing, since \splitoff doesn't work given nothing at
+ % all -- the first parameter is undelimited.)
+ \expandafter\splitoff\thearg\endmark
+ \ifx\rest\empty
+ % Only one token in the argument. It could still be anything.
+ % A ``lowercase letter'' is one whose \lccode is nonzero.
+ % An ``uppercase letter'' is one whose \lccode is both nonzero, and
+ % not equal to itself.
+ % Otherwise, we assume it's a number.
+ %
+ % We need the \relax at the end of the \ifnum lines to stop TeX from
+ % continuing to look for a <number>.
+ %
+ \ifnum\lccode\expandafter`\thearg=0\relax
+ \numericenumerate % a number (we hope)
+ \else
+ % It's a letter.
+ \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
+ \lowercaseenumerate % lowercase letter
+ \else
+ \uppercaseenumerate % uppercase letter
+ \fi
+ \fi
+ \else
+ % Multiple tokens in the argument. We hope it's a number.
+ \numericenumerate
+ \fi
+}
+
+% An @enumerate whose labels are integers. The starting integer is
+% given in \thearg.
+%
+\def\numericenumerate{%
+ \itemno = \thearg
+ \startenumeration{\the\itemno}%
+}
+
+% The starting (lowercase) letter is in \thearg.
+\def\lowercaseenumerate{%
+ \itemno = \expandafter`\thearg
+ \startenumeration{%
+ % Be sure we're not beyond the end of the alphabet.
+ \ifnum\itemno=0
+ \errmessage{No more lowercase letters in @enumerate; get a bigger
+ alphabet}%
+ \fi
+ \char\lccode\itemno
+ }%
+}
+
+% The starting (uppercase) letter is in \thearg.
+\def\uppercaseenumerate{%
+ \itemno = \expandafter`\thearg
+ \startenumeration{%
+ % Be sure we're not beyond the end of the alphabet.
+ \ifnum\itemno=0
+ \errmessage{No more uppercase letters in @enumerate; get a bigger
+ alphabet}
+ \fi
+ \char\uccode\itemno
+ }%
+}
+
+% Call itemizey, adding a period to the first argument and supplying the
+% common last two arguments. Also subtract one from the initial value in
+% \itemno, since @item increments \itemno.
+%
+\def\startenumeration#1{%
+ \advance\itemno by -1
+ \itemizey{#1.}\Eenumerate\flushcr
+}
+
+% @alphaenumerate and @capsenumerate are abbreviations for giving an arg
+% to @enumerate.
+%
+\def\alphaenumerate{\enumerate{a}}
+\def\capsenumerate{\enumerate{A}}
+\def\Ealphaenumerate{\Eenumerate}
+\def\Ecapsenumerate{\Eenumerate}
+
+% Definition of @item while inside @itemize.
+
+\def\itemizeitem{%
+\advance\itemno by 1
+{\let\par=\endgraf \smallbreak}%
+\ifhmode \errmessage{\in hmode at itemizeitem}\fi
+{\parskip=0in \hskip 0pt
+\hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
+\vadjust{\penalty 1200}}%
+\flushcr}
+
+% @multitable macros
+% Amy Hendrickson, 8/18/94, 3/6/96
+%
+% @multitable ... @end multitable will make as many columns as desired.
+% Contents of each column will wrap at width given in preamble. Width
+% can be specified either with sample text given in a template line,
+% or in percent of \hsize, the current width of text on page.
+
+% Table can continue over pages but will only break between lines.
+
+% To make preamble:
+%
+% Either define widths of columns in terms of percent of \hsize:
+% @multitable @columnfractions .25 .3 .45
+% @item ...
+%
+% Numbers following @columnfractions are the percent of the total
+% current hsize to be used for each column. You may use as many
+% columns as desired.
+
+
+% Or use a template:
+% @multitable {Column 1 template} {Column 2 template} {Column 3 template}
+% @item ...
+% using the widest term desired in each column.
+%
+% For those who want to use more than one line's worth of words in
+% the preamble, break the line within one argument and it
+% will parse correctly, i.e.,
+%
+% @multitable {Column 1 template} {Column 2 template} {Column 3
+% template}
+% Not:
+% @multitable {Column 1 template} {Column 2 template}
+% {Column 3 template}
+
+% Each new table line starts with @item, each subsequent new column
+% starts with @tab. Empty columns may be produced by supplying @tab's
+% with nothing between them for as many times as empty columns are needed,
+% ie, @tab@tab@tab will produce two empty columns.
+
+% @item, @tab, @multitable or @end multitable do not need to be on their
+% own lines, but it will not hurt if they are.
+
+% Sample multitable:
+
+% @multitable {Column 1 template} {Column 2 template} {Column 3 template}
+% @item first col stuff @tab second col stuff @tab third col
+% @item
+% first col stuff
+% @tab
+% second col stuff
+% @tab
+% third col
+% @item first col stuff @tab second col stuff
+% @tab Many paragraphs of text may be used in any column.
+%
+% They will wrap at the width determined by the template.
+% @item@tab@tab This will be in third column.
+% @end multitable
+
+% Default dimensions may be reset by user.
+% @multitableparskip is vertical space between paragraphs in table.
+% @multitableparindent is paragraph indent in table.
+% @multitablecolmargin is horizontal space to be left between columns.
+% @multitablelinespace is space to leave between table items, baseline
+% to baseline.
+% 0pt means it depends on current normal line spacing.
+
+%%%%
+% Dimensions
+
+\newskip\multitableparskip
+\newskip\multitableparindent
+\newdimen\multitablecolspace
+\newskip\multitablelinespace
+\multitableparskip=0pt
+\multitableparindent=6pt
+\multitablecolspace=12pt
+\multitablelinespace=0pt
+
+%%%%
+% Macros used to set up halign preamble:
+\let\endsetuptable\relax
+\def\xendsetuptable{\endsetuptable}
+\let\columnfractions\relax
+\def\xcolumnfractions{\columnfractions}
+\newif\ifsetpercent
+
+%% 2/1/96, to allow fractions to be given with more than one digit.
+\def\pickupwholefraction#1 {\global\advance\colcount by1 %
+\expandafter\xdef\csname col\the\colcount\endcsname{.#1\hsize}%
+\setuptable}
+
+\newcount\colcount
+\def\setuptable#1{\def\firstarg{#1}%
+\ifx\firstarg\xendsetuptable\let\go\relax%
+\else
+ \ifx\firstarg\xcolumnfractions\global\setpercenttrue%
+ \else
+ \ifsetpercent
+ \let\go\pickupwholefraction % In this case arg of setuptable
+ % is the decimal point before the
+ % number given in percent of hsize.
+ % We don't need this so we don't use it.
+ \else
+ \global\advance\colcount by1
+ \setbox0=\hbox{#1 }% Add a normal word space as a separator;
+ % typically that is always in the input, anyway.
+ \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
+ \fi%
+ \fi%
+\ifx\go\pickupwholefraction\else\let\go\setuptable\fi%
+\fi\go}
+
+%%%%
+% multitable syntax
+\def\tab{&\hskip1sp\relax} % 2/2/96
+ % tiny skip here makes sure this column space is
+ % maintained, even if it is never used.
+
+
+%%%%
+% @multitable ... @end multitable definitions:
+
+\def\multitable{\parsearg\dotable}
+
+\def\dotable#1{\bgroup
+\let\item\cr
+\tolerance=9500
+\hbadness=9500
+\setmultitablespacing
+\parskip=\multitableparskip
+\parindent=\multitableparindent
+\overfullrule=0pt
+\global\colcount=0\relax%
+\def\Emultitable{\global\setpercentfalse\global\everycr{}\cr\egroup\egroup}%
+ % To parse everything between @multitable and @item :
+\setuptable#1 \endsetuptable
+ % Need to reset this to 0 after \setuptable.
+\global\colcount=0\relax%
+ %
+ % This preamble sets up a generic column definition, which will
+ % be used as many times as user calls for columns.
+ % \vtop will set a single line and will also let text wrap and
+ % continue for many paragraphs if desired.
+\halign\bgroup&\global\advance\colcount by 1\relax%
+\multistrut\vtop{\hsize=\expandafter\csname col\the\colcount\endcsname
+ % In order to keep entries from bumping into each other
+ % we will add a \leftskip of \multitablecolspace to all columns after
+ % the first one.
+ % If a template has been used, we will add \multitablecolspace
+ % to the width of each template entry.
+ % If user has set preamble in terms of percent of \hsize
+ % we will use that dimension as the width of the column, and
+ % the \leftskip will keep entries from bumping into each other.
+ % Table will start at left margin and final column will justify at
+ % right margin.
+\ifnum\colcount=1
+\else
+ \ifsetpercent
+ \else
+ % If user has <not> set preamble in terms of percent of \hsize
+ % we will advance \hsize by \multitablecolspace
+ \advance\hsize by \multitablecolspace
+ \fi
+ % In either case we will make \leftskip=\multitablecolspace:
+\leftskip=\multitablecolspace
+\fi
+\noindent##\multistrut}\cr%
+ % \everycr will reset column counter, \colcount, at the end of
+ % each line. Every column entry will cause \colcount to advance by one.
+ % The table preamble
+ % looks at the current \colcount to find the correct column width.
+\global\everycr{\noalign{%
+\filbreak%% keeps underfull box messages off when table breaks over pages.
+\global\colcount=0\relax}}
+}
+
+\def\setmultitablespacing{% test to see if user has set \multitablelinespace.
+% If so, do nothing. If not, give it an appropriate dimension based on
+% current baselineskip.
+\ifdim\multitablelinespace=0pt
+%% strut to put in table in case some entry doesn't have descenders,
+%% to keep lines equally spaced
+\let\multistrut = \strut
+%% Test to see if parskip is larger than space between lines of
+%% table. If not, do nothing.
+%% If so, set to same dimension as multitablelinespace.
+\else
+\gdef\multistrut{\vrule height\multitablelinespace depth\dp0
+width0pt\relax} \fi
+\ifdim\multitableparskip>\multitablelinespace
+\global\multitableparskip=\multitablelinespace
+\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
+ %% than skip between lines in the table.
+\fi%
+\ifdim\multitableparskip=0pt
+\global\multitableparskip=\multitablelinespace
+\global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
+ %% than skip between lines in the table.
+\fi}
+
+
+\message{indexing,}
+% Index generation facilities
+
+% Define \newwrite to be identical to plain tex's \newwrite
+% except not \outer, so it can be used within \newindex.
+{\catcode`\@=11
+\gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
+
+% \newindex {foo} defines an index named foo.
+% It automatically defines \fooindex such that
+% \fooindex ...rest of line... puts an entry in the index foo.
+% It also defines \fooindfile to be the number of the output channel for
+% the file that accumulates this index. The file's extension is foo.
+% The name of an index should be no more than 2 characters long
+% for the sake of vms.
+
+\def\newindex #1{
+\expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
+\openout \csname#1indfile\endcsname \jobname.#1 % Open the file
+\expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
+\noexpand\doindex {#1}}
+}
+
+% @defindex foo == \newindex{foo}
+
+\def\defindex{\parsearg\newindex}
+
+% Define @defcodeindex, like @defindex except put all entries in @code.
+
+\def\newcodeindex #1{
+\expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
+\openout \csname#1indfile\endcsname \jobname.#1 % Open the file
+\expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
+\noexpand\docodeindex {#1}}
+}
+
+\def\defcodeindex{\parsearg\newcodeindex}
+
+% @synindex foo bar makes index foo feed into index bar.
+% Do this instead of @defindex foo if you don't want it as a separate index.
+\def\synindex #1 #2 {%
+\expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
+\expandafter\let\csname#1indfile\endcsname=\synindexfoo
+\expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
+\noexpand\doindex {#2}}%
+}
+
+% @syncodeindex foo bar similar, but put all entries made for index foo
+% inside @code.
+\def\syncodeindex #1 #2 {%
+\expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
+\expandafter\let\csname#1indfile\endcsname=\synindexfoo
+\expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
+\noexpand\docodeindex {#2}}%
+}
+
+% Define \doindex, the driver for all \fooindex macros.
+% Argument #1 is generated by the calling \fooindex macro,
+% and it is "foo", the name of the index.
+
+% \doindex just uses \parsearg; it calls \doind for the actual work.
+% This is because \doind is more useful to call from other macros.
+
+% There is also \dosubind {index}{topic}{subtopic}
+% which makes an entry in a two-level index such as the operation index.
+
+\def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
+\def\singleindexer #1{\doind{\indexname}{#1}}
+
+% like the previous two, but they put @code around the argument.
+\def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
+\def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
+
+\def\indexdummies{%
+% Take care of the plain tex accent commands.
+\def\"{\realbackslash "}%
+\def\`{\realbackslash `}%
+\def\'{\realbackslash '}%
+\def\^{\realbackslash ^}%
+\def\~{\realbackslash ~}%
+\def\={\realbackslash =}%
+\def\b{\realbackslash b}%
+\def\c{\realbackslash c}%
+\def\d{\realbackslash d}%
+\def\u{\realbackslash u}%
+\def\v{\realbackslash v}%
+\def\H{\realbackslash H}%
+% Take care of the plain tex special European modified letters.
+\def\oe{\realbackslash oe}%
+\def\ae{\realbackslash ae}%
+\def\aa{\realbackslash aa}%
+\def\OE{\realbackslash OE}%
+\def\AE{\realbackslash AE}%
+\def\AA{\realbackslash AA}%
+\def\o{\realbackslash o}%
+\def\O{\realbackslash O}%
+\def\l{\realbackslash l}%
+\def\L{\realbackslash L}%
+\def\ss{\realbackslash ss}%
+% Take care of texinfo commands likely to appear in an index entry.
+% (Must be a way to avoid doing expansion at all, and thus not have to
+% laboriously list every single command here.)
+\def\@{@}% will be @@ when we switch to @ as escape char.
+%\let\{ = \lbracecmd
+%\let\} = \rbracecmd
+\def\_{{\realbackslash _}}%
+\def\w{\realbackslash w }%
+\def\bf{\realbackslash bf }%
+%\def\rm{\realbackslash rm }%
+\def\sl{\realbackslash sl }%
+\def\sf{\realbackslash sf}%
+\def\tt{\realbackslash tt}%
+\def\gtr{\realbackslash gtr}%
+\def\less{\realbackslash less}%
+\def\hat{\realbackslash hat}%
+%\def\char{\realbackslash char}%
+\def\TeX{\realbackslash TeX}%
+\def\dots{\realbackslash dots }%
+\def\copyright{\realbackslash copyright }%
+\def\tclose##1{\realbackslash tclose {##1}}%
+\def\code##1{\realbackslash code {##1}}%
+\def\dotless##1{\realbackslash dotless {##1}}%
+\def\samp##1{\realbackslash samp {##1}}%
+\def\,##1{\realbackslash ,{##1}}%
+\def\t##1{\realbackslash t {##1}}%
+\def\r##1{\realbackslash r {##1}}%
+\def\i##1{\realbackslash i {##1}}%
+\def\b##1{\realbackslash b {##1}}%
+\def\cite##1{\realbackslash cite {##1}}%
+\def\key##1{\realbackslash key {##1}}%
+\def\file##1{\realbackslash file {##1}}%
+\def\var##1{\realbackslash var {##1}}%
+\def\kbd##1{\realbackslash kbd {##1}}%
+\def\dfn##1{\realbackslash dfn {##1}}%
+\def\emph##1{\realbackslash emph {##1}}%
+\unsepspaces
+}
+
+% If an index command is used in an @example environment, any spaces
+% therein should become regular spaces in the raw index file, not the
+% expansion of \tie (\\leavevmode \penalty \@M \ ).
+{\obeyspaces
+ \gdef\unsepspaces{\obeyspaces\let =\space}}
+
+% \indexnofonts no-ops all font-change commands.
+% This is used when outputting the strings to sort the index by.
+\def\indexdummyfont#1{#1}
+\def\indexdummytex{TeX}
+\def\indexdummydots{...}
+
+\def\indexnofonts{%
+% Just ignore accents.
+\let\,=\indexdummyfont
+\let\"=\indexdummyfont
+\let\`=\indexdummyfont
+\let\'=\indexdummyfont
+\let\^=\indexdummyfont
+\let\~=\indexdummyfont
+\let\==\indexdummyfont
+\let\b=\indexdummyfont
+\let\c=\indexdummyfont
+\let\d=\indexdummyfont
+\let\u=\indexdummyfont
+\let\v=\indexdummyfont
+\let\H=\indexdummyfont
+\let\dotless=\indexdummyfont
+% Take care of the plain tex special European modified letters.
+\def\oe{oe}%
+\def\ae{ae}%
+\def\aa{aa}%
+\def\OE{OE}%
+\def\AE{AE}%
+\def\AA{AA}%
+\def\o{o}%
+\def\O{O}%
+\def\l{l}%
+\def\L{L}%
+\def\ss{ss}%
+\let\w=\indexdummyfont
+\let\t=\indexdummyfont
+\let\r=\indexdummyfont
+\let\i=\indexdummyfont
+\let\b=\indexdummyfont
+\let\emph=\indexdummyfont
+\let\strong=\indexdummyfont
+\let\cite=\indexdummyfont
+\let\sc=\indexdummyfont
+%Don't no-op \tt, since it isn't a user-level command
+% and is used in the definitions of the active chars like <, >, |...
+%\let\tt=\indexdummyfont
+\let\tclose=\indexdummyfont
+\let\code=\indexdummyfont
+\let\file=\indexdummyfont
+\let\samp=\indexdummyfont
+\let\kbd=\indexdummyfont
+\let\key=\indexdummyfont
+\let\var=\indexdummyfont
+\let\TeX=\indexdummytex
+\let\dots=\indexdummydots
+\def\@{@}%
+}
+
+% To define \realbackslash, we must make \ not be an escape.
+% We must first make another character (@) an escape
+% so we do not become unable to do a definition.
+
+{\catcode`\@=0 \catcode`\\=\other
+@gdef@realbackslash{\}}
+
+\let\indexbackslash=0 %overridden during \printindex.
+
+\let\SETmarginindex=\relax %initialize!
+% workhorse for all \fooindexes
+% #1 is name of index, #2 is stuff to put there
+\def\doind #1#2{%
+ % Put the index entry in the margin if desired.
+ \ifx\SETmarginindex\relax\else
+ \insert\margin{\hbox{\vrule height8pt depth3pt width0pt #2}}%
+ \fi
+ {%
+ \count255=\lastpenalty
+ {%
+ \indexdummies % Must do this here, since \bf, etc expand at this stage
+ \escapechar=`\\
+ {%
+ \let\folio=0 % We will expand all macros now EXCEPT \folio.
+ \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
+ % so it will be output as is; and it will print as backslash.
+ %
+ % First process the index-string with all font commands turned off
+ % to get the string to sort by.
+ {\indexnofonts \xdef\indexsorttmp{#2}}%
+ %
+ % Now produce the complete index entry, with both the sort key and the
+ % original text, including any font commands.
+ \toks0 = {#2}%
+ \edef\temp{%
+ \write\csname#1indfile\endcsname{%
+ \realbackslash entry{\indexsorttmp}{\folio}{\the\toks0}}%
+ }%
+ \temp
+ }%
+ }%
+ \penalty\count255
+ }%
+}
+
+\def\dosubind #1#2#3{%
+{\count10=\lastpenalty %
+{\indexdummies % Must do this here, since \bf, etc expand at this stage
+\escapechar=`\\%
+{\let\folio=0%
+\def\rawbackslashxx{\indexbackslash}%
+%
+% Now process the index-string once, with all font commands turned off,
+% to get the string to sort the index by.
+{\indexnofonts
+\xdef\temp1{#2 #3}%
+}%
+% Now produce the complete index entry. We process the index-string again,
+% this time with font commands expanded, to get what to print in the index.
+\edef\temp{%
+\write \csname#1indfile\endcsname{%
+\realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
+\temp }%
+}\penalty\count10}}
+
+% The index entry written in the file actually looks like
+% \entry {sortstring}{page}{topic}
+% or
+% \entry {sortstring}{page}{topic}{subtopic}
+% The texindex program reads in these files and writes files
+% containing these kinds of lines:
+% \initial {c}
+% before the first topic whose initial is c
+% \entry {topic}{pagelist}
+% for a topic that is used without subtopics
+% \primary {topic}
+% for the beginning of a topic that is used with subtopics
+% \secondary {subtopic}{pagelist}
+% for each subtopic.
+
+% Define the user-accessible indexing commands
+% @findex, @vindex, @kindex, @cindex.
+
+\def\findex {\fnindex}
+\def\kindex {\kyindex}
+\def\cindex {\cpindex}
+\def\vindex {\vrindex}
+\def\tindex {\tpindex}
+\def\pindex {\pgindex}
+
+\def\cindexsub {\begingroup\obeylines\cindexsub}
+{\obeylines %
+\gdef\cindexsub "#1" #2^^M{\endgroup %
+\dosubind{cp}{#2}{#1}}}
+
+% Define the macros used in formatting output of the sorted index material.
+
+% This is what you call to cause a particular index to get printed.
+% Write
+% @unnumbered Function Index
+% @printindex fn
+
+\def\printindex{\parsearg\doprintindex}
+
+\def\doprintindex#1{\begingroup
+ \dobreak \chapheadingskip{10000}%
+ %
+ \indexfonts \rm
+ \tolerance = 9500
+ \indexbreaks
+ \def\indexbackslash{\rawbackslashxx}%
+ % Index files are almost Texinfo source, but we use \ as the escape
+ % character. It would be better to use @, but that's too big a change
+ % to make right now.
+ \catcode`\\ = 0
+ \catcode`\@ = 11
+ \escapechar = `\\
+ \begindoublecolumns
+ %
+ % See if the index file exists and is nonempty.
+ \openin 1 \jobname.#1s
+ \ifeof 1
+ % \enddoublecolumns gets confused if there is no text in the index,
+ % and it loses the chapter title and the aux file entries for the
+ % index. The easiest way to prevent this problem is to make sure
+ % there is some text.
+ (Index is nonexistent)
+ \else
+ %
+ % If the index file exists but is empty, then \openin leaves \ifeof
+ % false. We have to make TeX try to read something from the file, so
+ % it can discover if there is anything in it.
+ \read 1 to \temp
+ \ifeof 1
+ (Index is empty)
+ \else
+ \input \jobname.#1s
+ \fi
+ \fi
+ \closein 1
+ \enddoublecolumns
+\endgroup}
+
+% These macros are used by the sorted index file itself.
+% Change them to control the appearance of the index.
+
+% Same as \bigskipamount except no shrink.
+% \balancecolumns gets confused if there is any shrink.
+\newskip\initialskipamount \initialskipamount 12pt plus4pt
+
+\def\initial #1{%
+{\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
+\ifdim\lastskip<\initialskipamount
+\removelastskip \penalty-200 \vskip \initialskipamount\fi
+\line{\secbf#1\hfill}\kern 2pt\penalty10000}}
+
+% This typesets a paragraph consisting of #1, dot leaders, and then #2
+% flush to the right margin. It is used for index and table of contents
+% entries. The paragraph is indented by \leftskip.
+%
+\def\entry #1#2{\begingroup
+ %
+ % Start a new paragraph if necessary, so our assignments below can't
+ % affect previous text.
+ \par
+ %
+ % Do not fill out the last line with white space.
+ \parfillskip = 0in
+ %
+ % No extra space above this paragraph.
+ \parskip = 0in
+ %
+ % Do not prefer a separate line ending with a hyphen to fewer lines.
+ \finalhyphendemerits = 0
+ %
+ % \hangindent is only relevant when the entry text and page number
+ % don't both fit on one line. In that case, bob suggests starting the
+ % dots pretty far over on the line. Unfortunately, a large
+ % indentation looks wrong when the entry text itself is broken across
+ % lines. So we use a small indentation and put up with long leaders.
+ %
+ % \hangafter is reset to 1 (which is the value we want) at the start
+ % of each paragraph, so we need not do anything with that.
+ \hangindent=2em
+ %
+ % When the entry text needs to be broken, just fill out the first line
+ % with blank space.
+ \rightskip = 0pt plus1fil
+ %
+ % Start a ``paragraph'' for the index entry so the line breaking
+ % parameters we've set above will have an effect.
+ \noindent
+ %
+ % Insert the text of the index entry. TeX will do line-breaking on it.
+ #1%
+ % The following is kludged to not output a line of dots in the index if
+ % there are no page numbers. The next person who breaks this will be
+ % cursed by a Unix daemon.
+ \def\tempa{{\rm }}%
+ \def\tempb{#2}%
+ \edef\tempc{\tempa}%
+ \edef\tempd{\tempb}%
+ \ifx\tempc\tempd\ \else%
+ %
+ % If we must, put the page number on a line of its own, and fill out
+ % this line with blank space. (The \hfil is overwhelmed with the
+ % fill leaders glue in \indexdotfill if the page number does fit.)
+ \hfil\penalty50
+ \null\nobreak\indexdotfill % Have leaders before the page number.
+ %
+ % The `\ ' here is removed by the implicit \unskip that TeX does as
+ % part of (the primitive) \par. Without it, a spurious underfull
+ % \hbox ensues.
+ \ #2% The page number ends the paragraph.
+ \fi%
+ \par
+\endgroup}
+
+% Like \dotfill except takes at least 1 em.
+\def\indexdotfill{\cleaders
+ \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
+
+\def\primary #1{\line{#1\hfil}}
+
+\newskip\secondaryindent \secondaryindent=0.5cm
+
+\def\secondary #1#2{
+{\parfillskip=0in \parskip=0in
+\hangindent =1in \hangafter=1
+\noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
+}}
+
+% Define two-column mode, which we use to typeset indexes.
+% Adapted from the TeXbook, page 416, which is to say,
+% the manmac.tex format used to print the TeXbook itself.
+\catcode`\@=11
+
+\newbox\partialpage
+\newdimen\doublecolumnhsize
+
+\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
+ % Grab any single-column material above us.
+ \output = {\global\setbox\partialpage
+ =\vbox{\unvbox255\kern -\topskip \kern \baselineskip}}%
+ \eject
+ %
+ % Now switch to the double-column output routine.
+ \output={\doublecolumnout}%
+ %
+ % Change the page size parameters. We could do this once outside this
+ % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
+ % format, but then we repeat the same computation. Repeating a couple
+ % of assignments once per index is clearly meaningless for the
+ % execution time, so we may as well do it once.
+ %
+ % First we halve the line length, less a little for the gutter between
+ % the columns. We compute the gutter based on the line length, so it
+ % changes automatically with the paper format. The magic constant
+ % below is chosen so that the gutter has the same value (well, +- <
+ % 1pt) as it did when we hard-coded it.
+ %
+ % We put the result in a separate register, \doublecolumhsize, so we
+ % can restore it in \pagesofar, after \hsize itself has (potentially)
+ % been clobbered.
+ %
+ \doublecolumnhsize = \hsize
+ \advance\doublecolumnhsize by -.04154\hsize
+ \divide\doublecolumnhsize by 2
+ \hsize = \doublecolumnhsize
+ %
+ % Double the \vsize as well. (We don't need a separate register here,
+ % since nobody clobbers \vsize.)
+ \vsize = 2\vsize
+}
+\def\doublecolumnout{%
+ \splittopskip=\topskip \splitmaxdepth=\maxdepth
+ % Get the available space for the double columns -- the normal
+ % (undoubled) page height minus any material left over from the
+ % previous page.
+ \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
+ % box0 will be the left-hand column, box1 the right.
+ \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
+ \onepageout\pagesofar
+ \unvbox255 \penalty\outputpenalty
+}
+\def\pagesofar{%
+ % The contents of the output page -- any previous material,
+ % followed by the two boxes we just split.
+ \unvbox\partialpage
+ \hsize = \doublecolumnhsize
+ \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}%
+}
+\def\enddoublecolumns{%
+ \output={\balancecolumns}\eject % split what we have
+ \endgroup
+ % Back to normal single-column typesetting, but take account of the
+ % fact that we just accumulated some stuff on the output page.
+ \pagegoal=\vsize
+}
+\def\balancecolumns{%
+ % Called on the last page of the double column material.
+ \setbox0=\vbox{\unvbox255}%
+ \dimen@ = \ht0
+ \advance\dimen@ by \topskip
+ \advance\dimen@ by-\baselineskip
+ \divide\dimen@ by 2
+ \splittopskip = \topskip
+ % Loop until we get a decent breakpoint.
+ {\vbadness=10000 \loop \global\setbox3=\copy0
+ \global\setbox1=\vsplit3 to\dimen@
+ \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}%
+ \setbox0=\vbox to\dimen@{\unvbox1}%
+ \setbox2=\vbox to\dimen@{\unvbox3}%
+ \pagesofar
+}
+\catcode `\@=\other
+
+
+\message{sectioning,}
+% Define chapters, sections, etc.
+
+\newcount \chapno
+\newcount \secno \secno=0
+\newcount \subsecno \subsecno=0
+\newcount \subsubsecno \subsubsecno=0
+
+% This counter is funny since it counts through charcodes of letters A, B, ...
+\newcount \appendixno \appendixno = `\@
+\def\appendixletter{\char\the\appendixno}
+
+\newwrite \contentsfile
+% This is called from \setfilename.
+\def\opencontents{\openout \contentsfile = \jobname.toc}
+
+% Each @chapter defines this as the name of the chapter.
+% page headings and footings can use it. @section does likewise
+
+\def\thischapter{} \def\thissection{}
+\def\seccheck#1{\if \pageno<0 %
+\errmessage{@#1 not allowed after generating table of contents}\fi
+%
+}
+
+\def\chapternofonts{%
+\let\rawbackslash=\relax%
+\let\frenchspacing=\relax%
+\def\result{\realbackslash result}
+\def\equiv{\realbackslash equiv}
+\def\expansion{\realbackslash expansion}
+\def\print{\realbackslash print}
+\def\TeX{\realbackslash TeX}
+\def\dots{\realbackslash dots}
+\def\copyright{\realbackslash copyright}
+\def\tt{\realbackslash tt}
+\def\bf{\realbackslash bf }
+\def\w{\realbackslash w}
+\def\less{\realbackslash less}
+\def\gtr{\realbackslash gtr}
+\def\hat{\realbackslash hat}
+\def\char{\realbackslash char}
+\def\tclose##1{\realbackslash tclose {##1}}
+\def\code##1{\realbackslash code {##1}}
+\def\samp##1{\realbackslash samp {##1}}
+\def\r##1{\realbackslash r {##1}}
+\def\b##1{\realbackslash b {##1}}
+\def\key##1{\realbackslash key {##1}}
+\def\file##1{\realbackslash file {##1}}
+\def\kbd##1{\realbackslash kbd {##1}}
+% These are redefined because @smartitalic wouldn't work inside xdef.
+\def\i##1{\realbackslash i {##1}}
+\def\cite##1{\realbackslash cite {##1}}
+\def\var##1{\realbackslash var {##1}}
+\def\emph##1{\realbackslash emph {##1}}
+\def\dfn##1{\realbackslash dfn {##1}}
+}
+
+\newcount\absseclevel % used to calculate proper heading level
+\newcount\secbase\secbase=0 % @raise/lowersections modify this count
+
+% @raisesections: treat @section as chapter, @subsection as section, etc.
+\def\raisesections{\global\advance\secbase by -1}
+\let\up=\raisesections % original BFox name
+
+% @lowersections: treat @chapter as section, @section as subsection, etc.
+\def\lowersections{\global\advance\secbase by 1}
+\let\down=\lowersections % original BFox name
+
+% Choose a numbered-heading macro
+% #1 is heading level if unmodified by @raisesections or @lowersections
+% #2 is text for heading
+\def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
+\ifcase\absseclevel
+ \chapterzzz{#2}
+\or
+ \seczzz{#2}
+\or
+ \numberedsubseczzz{#2}
+\or
+ \numberedsubsubseczzz{#2}
+\else
+ \ifnum \absseclevel<0
+ \chapterzzz{#2}
+ \else
+ \numberedsubsubseczzz{#2}
+ \fi
+\fi
+}
+
+% like \numhead, but chooses appendix heading levels
+\def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
+\ifcase\absseclevel
+ \appendixzzz{#2}
+\or
+ \appendixsectionzzz{#2}
+\or
+ \appendixsubseczzz{#2}
+\or
+ \appendixsubsubseczzz{#2}
+\else
+ \ifnum \absseclevel<0
+ \appendixzzz{#2}
+ \else
+ \appendixsubsubseczzz{#2}
+ \fi
+\fi
+}
+
+% like \numhead, but chooses numberless heading levels
+\def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
+\ifcase\absseclevel
+ \unnumberedzzz{#2}
+\or
+ \unnumberedseczzz{#2}
+\or
+ \unnumberedsubseczzz{#2}
+\or
+ \unnumberedsubsubseczzz{#2}
+\else
+ \ifnum \absseclevel<0
+ \unnumberedzzz{#2}
+ \else
+ \unnumberedsubsubseczzz{#2}
+ \fi
+\fi
+}
+
+
+\def\thischaptername{No Chapter Title}
+\outer\def\chapter{\parsearg\chapteryyy}
+\def\chapteryyy #1{\numhead0{#1}} % normally numhead0 calls chapterzzz
+\def\chapterzzz #1{\seccheck{chapter}%
+\secno=0 \subsecno=0 \subsubsecno=0
+\global\advance \chapno by 1 \message{\putwordChapter \the\chapno}%
+\chapmacro {#1}{\the\chapno}%
+\gdef\thissection{#1}%
+\gdef\thischaptername{#1}%
+% We don't substitute the actual chapter name into \thischapter
+% because we don't want its macros evaluated now.
+\xdef\thischapter{\putwordChapter{} \the\chapno: \noexpand\thischaptername}%
+{\chapternofonts%
+\edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\donoderef %
+\global\let\section = \numberedsec
+\global\let\subsection = \numberedsubsec
+\global\let\subsubsection = \numberedsubsubsec
+}}
+
+\outer\def\appendix{\parsearg\appendixyyy}
+\def\appendixyyy #1{\apphead0{#1}} % normally apphead0 calls appendixzzz
+\def\appendixzzz #1{\seccheck{appendix}%
+\secno=0 \subsecno=0 \subsubsecno=0
+\global\advance \appendixno by 1 \message{Appendix \appendixletter}%
+\chapmacro {#1}{\putwordAppendix{} \appendixletter}%
+\gdef\thissection{#1}%
+\gdef\thischaptername{#1}%
+\xdef\thischapter{\putwordAppendix{} \appendixletter: \noexpand\thischaptername}%
+{\chapternofonts%
+\edef\temp{{\realbackslash chapentry
+ {#1}{\putwordAppendix{} \appendixletter}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\appendixnoderef %
+\global\let\section = \appendixsec
+\global\let\subsection = \appendixsubsec
+\global\let\subsubsection = \appendixsubsubsec
+}}
+
+% @centerchap is like @unnumbered, but the heading is centered.
+\outer\def\centerchap{\parsearg\centerchapyyy}
+\def\centerchapyyy #1{{\let\unnumbchapmacro=\centerchapmacro \unnumberedyyy{#1}}}
+
+\outer\def\top{\parsearg\unnumberedyyy}
+\outer\def\unnumbered{\parsearg\unnumberedyyy}
+\def\unnumberedyyy #1{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
+\def\unnumberedzzz #1{\seccheck{unnumbered}%
+\secno=0 \subsecno=0 \subsubsecno=0
+%
+% This used to be simply \message{#1}, but TeX fully expands the
+% argument to \message. Therefore, if #1 contained @-commands, TeX
+% expanded them. For example, in `@unnumbered The @cite{Book}', TeX
+% expanded @cite (which turns out to cause errors because \cite is meant
+% to be executed, not expanded).
+%
+% Anyway, we don't want the fully-expanded definition of @cite to appear
+% as a result of the \message, we just want `@cite' itself. We use
+% \the<toks register> to achieve this: TeX expands \the<toks> only once,
+% simply yielding the contents of the <toks register>.
+\toks0 = {#1}\message{(\the\toks0)}%
+%
+\unnumbchapmacro {#1}%
+\gdef\thischapter{#1}\gdef\thissection{#1}%
+{\chapternofonts%
+\edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\unnumbnoderef %
+\global\let\section = \unnumberedsec
+\global\let\subsection = \unnumberedsubsec
+\global\let\subsubsection = \unnumberedsubsubsec
+}}
+
+\outer\def\numberedsec{\parsearg\secyyy}
+\def\secyyy #1{\numhead1{#1}} % normally calls seczzz
+\def\seczzz #1{\seccheck{section}%
+\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
+\gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash secentry %
+{#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\donoderef %
+\penalty 10000 %
+}}
+
+\outer\def\appendixsection{\parsearg\appendixsecyyy}
+\outer\def\appendixsec{\parsearg\appendixsecyyy}
+\def\appendixsecyyy #1{\apphead1{#1}} % normally calls appendixsectionzzz
+\def\appendixsectionzzz #1{\seccheck{appendixsection}%
+\subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
+\gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash secentry %
+{#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\appendixnoderef %
+\penalty 10000 %
+}}
+
+\outer\def\unnumberedsec{\parsearg\unnumberedsecyyy}
+\def\unnumberedsecyyy #1{\unnmhead1{#1}} % normally calls unnumberedseczzz
+\def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
+\plainsecheading {#1}\gdef\thissection{#1}%
+{\chapternofonts%
+\edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\unnumbnoderef %
+\penalty 10000 %
+}}
+
+\outer\def\numberedsubsec{\parsearg\numberedsubsecyyy}
+\def\numberedsubsecyyy #1{\numhead2{#1}} % normally calls numberedsubseczzz
+\def\numberedsubseczzz #1{\seccheck{subsection}%
+\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
+\subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash subsecentry %
+{#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\donoderef %
+\penalty 10000 %
+}}
+
+\outer\def\appendixsubsec{\parsearg\appendixsubsecyyy}
+\def\appendixsubsecyyy #1{\apphead2{#1}} % normally calls appendixsubseczzz
+\def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
+\gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
+\subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash subsecentry %
+{#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\appendixnoderef %
+\penalty 10000 %
+}}
+
+\outer\def\unnumberedsubsec{\parsearg\unnumberedsubsecyyy}
+\def\unnumberedsubsecyyy #1{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
+\def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
+\plainsubsecheading {#1}\gdef\thissection{#1}%
+{\chapternofonts%
+\edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\unnumbnoderef %
+\penalty 10000 %
+}}
+
+\outer\def\numberedsubsubsec{\parsearg\numberedsubsubsecyyy}
+\def\numberedsubsubsecyyy #1{\numhead3{#1}} % normally numberedsubsubseczzz
+\def\numberedsubsubseczzz #1{\seccheck{subsubsection}%
+\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
+\subsubsecheading {#1}
+ {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash subsubsecentry %
+ {#1}
+ {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}
+ {\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\donoderef %
+\penalty 10000 %
+}}
+
+\outer\def\appendixsubsubsec{\parsearg\appendixsubsubsecyyy}
+\def\appendixsubsubsecyyy #1{\apphead3{#1}} % normally appendixsubsubseczzz
+\def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
+\gdef\thissection{#1}\global\advance \subsubsecno by 1 %
+\subsubsecheading {#1}
+ {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
+{\chapternofonts%
+\edef\temp{{\realbackslash subsubsecentry{#1}%
+ {\appendixletter}
+ {\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\appendixnoderef %
+\penalty 10000 %
+}}
+
+\outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubsecyyy}
+\def\unnumberedsubsubsecyyy #1{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
+\def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
+\plainsubsubsecheading {#1}\gdef\thissection{#1}%
+{\chapternofonts%
+\edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
+\escapechar=`\\%
+\write \contentsfile \temp %
+\unnumbnoderef %
+\penalty 10000 %
+}}
+
+% These are variants which are not "outer", so they can appear in @ifinfo.
+% Actually, they should now be obsolete; ordinary section commands should work.
+\def\infotop{\parsearg\unnumberedzzz}
+\def\infounnumbered{\parsearg\unnumberedzzz}
+\def\infounnumberedsec{\parsearg\unnumberedseczzz}
+\def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
+\def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
+
+\def\infoappendix{\parsearg\appendixzzz}
+\def\infoappendixsec{\parsearg\appendixseczzz}
+\def\infoappendixsubsec{\parsearg\appendixsubseczzz}
+\def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
+
+\def\infochapter{\parsearg\chapterzzz}
+\def\infosection{\parsearg\sectionzzz}
+\def\infosubsection{\parsearg\subsectionzzz}
+\def\infosubsubsection{\parsearg\subsubsectionzzz}
+
+% These macros control what the section commands do, according
+% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
+% Define them by default for a numbered chapter.
+\global\let\section = \numberedsec
+\global\let\subsection = \numberedsubsec
+\global\let\subsubsection = \numberedsubsubsec
+
+% Define @majorheading, @heading and @subheading
+
+% NOTE on use of \vbox for chapter headings, section headings, and
+% such:
+% 1) We use \vbox rather than the earlier \line to permit
+% overlong headings to fold.
+% 2) \hyphenpenalty is set to 10000 because hyphenation in a
+% heading is obnoxious; this forbids it.
+% 3) Likewise, headings look best if no \parindent is used, and
+% if justification is not attempted. Hence \raggedright.
+
+
+\def\majorheading{\parsearg\majorheadingzzz}
+\def\majorheadingzzz #1{%
+{\advance\chapheadingskip by 10pt \chapbreak }%
+{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+ \parindent=0pt\raggedright
+ \rm #1\hfill}}\bigskip \par\penalty 200}
+
+\def\chapheading{\parsearg\chapheadingzzz}
+\def\chapheadingzzz #1{\chapbreak %
+{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+ \parindent=0pt\raggedright
+ \rm #1\hfill}}\bigskip \par\penalty 200}
+
+% @heading, @subheading, @subsubheading.
+\def\heading{\parsearg\plainsecheading}
+\def\subheading{\parsearg\plainsubsecheading}
+\def\subsubheading{\parsearg\plainsubsubsecheading}
+
+% These macros generate a chapter, section, etc. heading only
+% (including whitespace, linebreaking, etc. around it),
+% given all the information in convenient, parsed form.
+
+%%% Args are the skip and penalty (usually negative)
+\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
+
+\def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
+
+%%% Define plain chapter starts, and page on/off switching for it
+% Parameter controlling skip before chapter headings (if needed)
+
+\newskip\chapheadingskip
+
+\def\chapbreak{\dobreak \chapheadingskip {-4000}}
+\def\chappager{\par\vfill\supereject}
+\def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
+
+\def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
+
+\def\CHAPPAGoff{
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chapbreak
+\global\let\pagealignmacro=\chappager}
+
+\def\CHAPPAGon{
+\global\let\contentsalignmacro = \chappager
+\global\let\pchapsepmacro=\chappager
+\global\let\pagealignmacro=\chappager
+\global\def\HEADINGSon{\HEADINGSsingle}}
+
+\def\CHAPPAGodd{
+\global\let\contentsalignmacro = \chapoddpage
+\global\let\pchapsepmacro=\chapoddpage
+\global\let\pagealignmacro=\chapoddpage
+\global\def\HEADINGSon{\HEADINGSdouble}}
+
+\CHAPPAGon
+
+\def\CHAPFplain{
+\global\let\chapmacro=\chfplain
+\global\let\unnumbchapmacro=\unnchfplain
+\global\let\centerchapmacro=\centerchfplain}
+
+% Plain chapter opening.
+% #1 is the text, #2 the chapter number or empty if unnumbered.
+\def\chfplain#1#2{%
+ \pchapsepmacro
+ {%
+ \chapfonts \rm
+ \def\chapnum{#2}%
+ \setbox0 = \hbox{#2\ifx\chapnum\empty\else\enspace\fi}%
+ \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
+ \hangindent = \wd0 \centerparametersmaybe
+ \unhbox0 #1\par}%
+ }%
+ \nobreak\bigskip % no page break after a chapter title
+ \nobreak
+}
+
+% Plain opening for unnumbered.
+\def\unnchfplain#1{\chfplain{#1}{}}
+
+% @centerchap -- centered and unnumbered.
+\let\centerparametersmaybe = \relax
+\def\centerchfplain#1{{%
+ \def\centerparametersmaybe{%
+ \advance\rightskip by 3\rightskip
+ \leftskip = \rightskip
+ \parfillskip = 0pt
+ }%
+ \chfplain{#1}{}%
+}}
+
+\CHAPFplain % The default
+
+\def\unnchfopen #1{%
+\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+ \parindent=0pt\raggedright
+ \rm #1\hfill}}\bigskip \par\penalty 10000 %
+}
+
+\def\chfopen #1#2{\chapoddpage {\chapfonts
+\vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
+\par\penalty 5000 %
+}
+
+\def\centerchfopen #1{%
+\chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
+ \parindent=0pt
+ \hfill {\rm #1}\hfill}}\bigskip \par\penalty 10000 %
+}
+
+\def\CHAPFopen{
+\global\let\chapmacro=\chfopen
+\global\let\unnumbchapmacro=\unnchfopen
+\global\let\centerchapmacro=\centerchfopen}
+
+
+% Section titles.
+\newskip\secheadingskip
+\def\secheadingbreak{\dobreak \secheadingskip {-1000}}
+\def\secheading#1#2#3{\sectionheading{sec}{#2.#3}{#1}}
+\def\plainsecheading#1{\sectionheading{sec}{}{#1}}
+
+% Subsection titles.
+\newskip \subsecheadingskip
+\def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
+\def\subsecheading#1#2#3#4{\sectionheading{subsec}{#2.#3.#4}{#1}}
+\def\plainsubsecheading#1{\sectionheading{subsec}{}{#1}}
+
+% Subsubsection titles.
+\let\subsubsecheadingskip = \subsecheadingskip
+\let\subsubsecheadingbreak = \subsecheadingbreak
+\def\subsubsecheading#1#2#3#4#5{\sectionheading{subsubsec}{#2.#3.#4.#5}{#1}}
+\def\plainsubsubsecheading#1{\sectionheading{subsubsec}{}{#1}}
+
+
+% Print any size section title.
+%
+% #1 is the section type (sec/subsec/subsubsec), #2 is the section
+% number (maybe empty), #3 the text.
+\def\sectionheading#1#2#3{%
+ {%
+ \expandafter\advance\csname #1headingskip\endcsname by \parskip
+ \csname #1headingbreak\endcsname
+ }%
+ {%
+ % Switch to the right set of fonts.
+ \csname #1fonts\endcsname \rm
+ %
+ % Only insert the separating space if we have a section number.
+ \def\secnum{#2}%
+ \setbox0 = \hbox{#2\ifx\secnum\empty\else\enspace\fi}%
+ %
+ \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
+ \hangindent = \wd0 % zero if no section number
+ \unhbox0 #3}%
+ }%
+ \ifdim\parskip<10pt \nobreak\kern10pt\nobreak\kern-\parskip\fi \nobreak
+}
+
+
+\message{toc printing,}
+% Finish up the main text and prepare to read what we've written
+% to \contentsfile.
+
+\newskip\contentsrightmargin \contentsrightmargin=1in
+\def\startcontents#1{%
+ % If @setchapternewpage on, and @headings double, the contents should
+ % start on an odd page, unlike chapters. Thus, we maintain
+ % \contentsalignmacro in parallel with \pagealignmacro.
+ % From: Torbjorn Granlund <tege@matematik.su.se>
+ \contentsalignmacro
+ \immediate\closeout \contentsfile
+ \ifnum \pageno>0
+ \pageno = -1 % Request roman numbered pages.
+ \fi
+ % Don't need to put `Contents' or `Short Contents' in the headline.
+ % It is abundantly clear what they are.
+ \unnumbchapmacro{#1}\def\thischapter{}%
+ \begingroup % Set up to handle contents files properly.
+ \catcode`\\=0 \catcode`\{=1 \catcode`\}=2 \catcode`\@=11
+ \catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
+ \raggedbottom % Worry more about breakpoints than the bottom.
+ \advance\hsize by -\contentsrightmargin % Don't use the full line length.
+}
+
+
+% Normal (long) toc.
+\outer\def\contents{%
+ \startcontents{\putwordTableofContents}%
+ \input \jobname.toc
+ \endgroup
+ \vfill \eject
+}
+
+% And just the chapters.
+\outer\def\summarycontents{%
+ \startcontents{\putwordShortContents}%
+ %
+ \let\chapentry = \shortchapentry
+ \let\unnumbchapentry = \shortunnumberedentry
+ % We want a true roman here for the page numbers.
+ \secfonts
+ \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
+ \rm
+ \hyphenpenalty = 10000
+ \advance\baselineskip by 1pt % Open it up a little.
+ \def\secentry ##1##2##3##4{}
+ \def\unnumbsecentry ##1##2{}
+ \def\subsecentry ##1##2##3##4##5{}
+ \def\unnumbsubsecentry ##1##2{}
+ \def\subsubsecentry ##1##2##3##4##5##6{}
+ \def\unnumbsubsubsecentry ##1##2{}
+ \input \jobname.toc
+ \endgroup
+ \vfill \eject
+}
+\let\shortcontents = \summarycontents
+
+% These macros generate individual entries in the table of contents.
+% The first argument is the chapter or section name.
+% The last argument is the page number.
+% The arguments in between are the chapter number, section number, ...
+
+% Chapter-level things, for both the long and short contents.
+\def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
+
+% See comments in \dochapentry re vbox and related settings
+\def\shortchapentry#1#2#3{%
+ \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno{#3}}%
+}
+
+% Typeset the label for a chapter or appendix for the short contents.
+% The arg is, e.g. `Appendix A' for an appendix, or `3' for a chapter.
+% We could simplify the code here by writing out an \appendixentry
+% command in the toc file for appendices, instead of using \chapentry
+% for both, but it doesn't seem worth it.
+\setbox0 = \hbox{\shortcontrm \putwordAppendix }
+\newdimen\shortappendixwidth \shortappendixwidth = \wd0
+
+\def\shortchaplabel#1{%
+ % We typeset #1 in a box of constant width, regardless of the text of
+ % #1, so the chapter titles will come out aligned.
+ \setbox0 = \hbox{#1}%
+ \dimen0 = \ifdim\wd0 > \shortappendixwidth \shortappendixwidth \else 0pt \fi
+ %
+ % This space should be plenty, since a single number is .5em, and the
+ % widest letter (M) is 1em, at least in the Computer Modern fonts.
+ % (This space doesn't include the extra space that gets added after
+ % the label; that gets put in by \shortchapentry above.)
+ \advance\dimen0 by 1.1em
+ \hbox to \dimen0{#1\hfil}%
+}
+
+\def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
+\def\shortunnumberedentry#1#2{\tocentry{#1}{\doshortpageno{#2}}}
+
+% Sections.
+\def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
+\def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
+
+% Subsections.
+\def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
+\def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
+
+% And subsubsections.
+\def\subsubsecentry#1#2#3#4#5#6{%
+ \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
+\def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
+
+% This parameter controls the indentation of the various levels.
+\newdimen\tocindent \tocindent = 3pc
+
+% Now for the actual typesetting. In all these, #1 is the text and #2 is the
+% page number.
+%
+% If the toc has to be broken over pages, we want it to be at chapters
+% if at all possible; hence the \penalty.
+\def\dochapentry#1#2{%
+ \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
+ \begingroup
+ \chapentryfonts
+ \tocentry{#1}{\dopageno{#2}}%
+ \endgroup
+ \nobreak\vskip .25\baselineskip plus.1\baselineskip
+}
+
+\def\dosecentry#1#2{\begingroup
+ \secentryfonts \leftskip=\tocindent
+ \tocentry{#1}{\dopageno{#2}}%
+\endgroup}
+
+\def\dosubsecentry#1#2{\begingroup
+ \subsecentryfonts \leftskip=2\tocindent
+ \tocentry{#1}{\dopageno{#2}}%
+\endgroup}
+
+\def\dosubsubsecentry#1#2{\begingroup
+ \subsubsecentryfonts \leftskip=3\tocindent
+ \tocentry{#1}{\dopageno{#2}}%
+\endgroup}
+
+% Final typesetting of a toc entry; we use the same \entry macro as for
+% the index entries, but we want to suppress hyphenation here. (We
+% can't do that in the \entry macro, since index entries might consist
+% of hyphenated-identifiers-that-do-not-fit-on-a-line-and-nothing-else.)
+%
+% \turnoffactive is for the sake of @" used for umlauts.
+\def\tocentry#1#2{\begingroup
+ \vskip 0pt plus1pt % allow a little stretch for the sake of nice page breaks
+ \entry{\turnoffactive #1}{\turnoffactive #2}%
+\endgroup}
+
+% Space between chapter (or whatever) number and the title.
+\def\labelspace{\hskip1em \relax}
+
+\def\dopageno#1{{\rm #1}}
+\def\doshortpageno#1{{\rm #1}}
+
+\def\chapentryfonts{\secfonts \rm}
+\def\secentryfonts{\textfonts}
+\let\subsecentryfonts = \textfonts
+\let\subsubsecentryfonts = \textfonts
+
+
+\message{environments,}
+
+% Since these characters are used in examples, it should be an even number of
+% \tt widths. Each \tt character is 1en, so two makes it 1em.
+% Furthermore, these definitions must come after we define our fonts.
+\newbox\dblarrowbox \newbox\longdblarrowbox
+\newbox\pushcharbox \newbox\bullbox
+\newbox\equivbox \newbox\errorbox
+
+%{\tentt
+%\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
+%\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
+%\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
+%\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
+% Adapted from the manmac format (p.420 of TeXbook)
+%\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
+% depth .1ex\hfil}
+%}
+
+% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
+\def\point{$\star$}
+\def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
+\def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
+\def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
+\def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
+
+% Adapted from the TeXbook's \boxit.
+{\tentt \global\dimen0 = 3em}% Width of the box.
+\dimen2 = .55pt % Thickness of rules
+% The text. (`r' is open on the right, `e' somewhat less so on the left.)
+\setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
+
+\global\setbox\errorbox=\hbox to \dimen0{\hfil
+ \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
+ \advance\hsize by -2\dimen2 % Rules.
+ \vbox{
+ \hrule height\dimen2
+ \hbox{\vrule width\dimen2 \kern3pt % Space to left of text.
+ \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
+ \kern3pt\vrule width\dimen2}% Space to right.
+ \hrule height\dimen2}
+ \hfil}
+
+% The @error{} command.
+\def\error{\leavevmode\lower.7ex\copy\errorbox}
+
+% @tex ... @end tex escapes into raw Tex temporarily.
+% One exception: @ is still an escape character, so that @end tex works.
+% But \@ or @@ will get a plain tex @ character.
+
+\def\tex{\begingroup
+\catcode `\\=0 \catcode `\{=1 \catcode `\}=2
+\catcode `\$=3 \catcode `\&=4 \catcode `\#=6
+\catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
+\catcode `\%=14
+\catcode 43=12 % plus
+\catcode`\"=12
+\catcode`\==12
+\catcode`\|=12
+\catcode`\<=12
+\catcode`\>=12
+\escapechar=`\\
+%
+\let\,=\ptexcomma
+\let\~=\ptextilde
+\let\{=\ptexlbrace
+\let\}=\ptexrbrace
+\let\.=\ptexdot
+\let\*=\ptexstar
+\let\dots=\ptexdots
+\def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}
+\def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}
+\def\@{@}%
+\let\bullet=\ptexbullet
+\let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext
+%
+\let\Etex=\endgroup}
+
+% Define @lisp ... @endlisp.
+% @lisp does a \begingroup so it can rebind things,
+% including the definition of @endlisp (which normally is erroneous).
+
+% Amount to narrow the margins by for @lisp.
+\newskip\lispnarrowing \lispnarrowing=0.4in
+
+% This is the definition that ^^M gets inside @lisp, @example, and other
+% such environments. \null is better than a space, since it doesn't
+% have any width.
+\def\lisppar{\null\endgraf}
+
+% Make each space character in the input produce a normal interword
+% space in the output. Don't allow a line break at this space, as this
+% is used only in environments like @example, where each line of input
+% should produce a line of output anyway.
+%
+{\obeyspaces %
+\gdef\sepspaces{\obeyspaces\let =\tie}}
+
+% Define \obeyedspace to be our active space, whatever it is. This is
+% for use in \parsearg.
+{\sepspaces%
+\global\let\obeyedspace= }
+
+% This space is always present above and below environments.
+\newskip\envskipamount \envskipamount = 0pt
+
+% Make spacing and below environment symmetrical. We use \parskip here
+% to help in doing that, since in @example-like environments \parskip
+% is reset to zero; thus the \afterenvbreak inserts no space -- but the
+% start of the next paragraph will insert \parskip
+%
+\def\aboveenvbreak{{\advance\envskipamount by \parskip
+\endgraf \ifdim\lastskip<\envskipamount
+\removelastskip \penalty-50 \vskip\envskipamount \fi}}
+
+\let\afterenvbreak = \aboveenvbreak
+
+% \nonarrowing is a flag. If "set", @lisp etc don't narrow margins.
+\let\nonarrowing=\relax
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \cartouche: draw rectangle w/rounded corners around argument
+\font\circle=lcircle10
+\newdimen\circthick
+\newdimen\cartouter\newdimen\cartinner
+\newskip\normbskip\newskip\normpskip\newskip\normlskip
+\circthick=\fontdimen8\circle
+%
+\def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
+\def\ctr{{\hskip 6pt\circle\char'010}}
+\def\cbl{{\circle\char'012\hskip -6pt}}
+\def\cbr{{\hskip 6pt\circle\char'011}}
+\def\carttop{\hbox to \cartouter{\hskip\lskip
+ \ctl\leaders\hrule height\circthick\hfil\ctr
+ \hskip\rskip}}
+\def\cartbot{\hbox to \cartouter{\hskip\lskip
+ \cbl\leaders\hrule height\circthick\hfil\cbr
+ \hskip\rskip}}
+%
+\newskip\lskip\newskip\rskip
+
+\long\def\cartouche{%
+\begingroup
+ \lskip=\leftskip \rskip=\rightskip
+ \leftskip=0pt\rightskip=0pt %we want these *outside*.
+ \cartinner=\hsize \advance\cartinner by-\lskip
+ \advance\cartinner by-\rskip
+ \cartouter=\hsize
+ \advance\cartouter by 18pt % allow for 3pt kerns on either
+% side, and for 6pt waste from
+% each corner char
+ \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
+ % Flag to tell @lisp, etc., not to narrow margin.
+ \let\nonarrowing=\comment
+ \vbox\bgroup
+ \baselineskip=0pt\parskip=0pt\lineskip=0pt
+ \carttop
+ \hbox\bgroup
+ \hskip\lskip
+ \vrule\kern3pt
+ \vbox\bgroup
+ \hsize=\cartinner
+ \kern3pt
+ \begingroup
+ \baselineskip=\normbskip
+ \lineskip=\normlskip
+ \parskip=\normpskip
+ \vskip -\parskip
+\def\Ecartouche{%
+ \endgroup
+ \kern3pt
+ \egroup
+ \kern3pt\vrule
+ \hskip\rskip
+ \egroup
+ \cartbot
+ \egroup
+\endgroup
+}}
+
+
+% This macro is called at the beginning of all the @example variants,
+% inside a group.
+\def\nonfillstart{%
+ \aboveenvbreak
+ \inENV % This group ends at the end of the body
+ \hfuzz = 12pt % Don't be fussy
+ \sepspaces % Make spaces be word-separators rather than space tokens.
+ \singlespace
+ \let\par = \lisppar % don't ignore blank lines
+ \obeylines % each line of input is a line of output
+ \parskip = 0pt
+ \parindent = 0pt
+ \emergencystretch = 0pt % don't try to avoid overfull boxes
+ % @cartouche defines \nonarrowing to inhibit narrowing
+ % at next level down.
+ \ifx\nonarrowing\relax
+ \advance \leftskip by \lispnarrowing
+ \exdentamount=\lispnarrowing
+ \let\exdent=\nofillexdent
+ \let\nonarrowing=\relax
+ \fi
+}
+
+% To ending an @example-like environment, we first end the paragraph
+% (via \afterenvbreak's vertical glue), and then the group. That way we
+% keep the zero \parskip that the environments set -- \parskip glue
+% will be inserted at the beginning of the next paragraph in the
+% document, after the environment.
+%
+\def\nonfillfinish{\afterenvbreak\endgroup}%
+
+% This macro is
+\def\lisp{\begingroup
+ \nonfillstart
+ \let\Elisp = \nonfillfinish
+ \tt
+ \rawbackslash % have \ input char produce \ char from current font
+ \gobble
+}
+
+% Define the \E... control sequence only if we are inside the
+% environment, so the error checking in \end will work.
+%
+% We must call \lisp last in the definition, since it reads the
+% return following the @example (or whatever) command.
+%
+\def\example{\begingroup \def\Eexample{\nonfillfinish\endgroup}\lisp}
+\def\smallexample{\begingroup \def\Esmallexample{\nonfillfinish\endgroup}\lisp}
+\def\smalllisp{\begingroup \def\Esmalllisp{\nonfillfinish\endgroup}\lisp}
+
+% @smallexample and @smalllisp. This is not used unless the @smallbook
+% command is given. Originally contributed by Pavel@xerox.
+%
+\def\smalllispx{\begingroup
+ \nonfillstart
+ \let\Esmalllisp = \nonfillfinish
+ \let\Esmallexample = \nonfillfinish
+ %
+ % Smaller fonts for small examples.
+ \indexfonts \tt
+ \rawbackslash % make \ output the \ character from the current font (tt)
+ \gobble
+}
+
+% This is @display; same as @lisp except use roman font.
+%
+\def\display{\begingroup
+ \nonfillstart
+ \let\Edisplay = \nonfillfinish
+ \gobble
+}
+
+% This is @format; same as @display except don't narrow margins.
+%
+\def\format{\begingroup
+ \let\nonarrowing = t
+ \nonfillstart
+ \let\Eformat = \nonfillfinish
+ \gobble
+}
+
+% @flushleft (same as @format) and @flushright.
+%
+\def\flushleft{\begingroup
+ \let\nonarrowing = t
+ \nonfillstart
+ \let\Eflushleft = \nonfillfinish
+ \gobble
+}
+\def\flushright{\begingroup
+ \let\nonarrowing = t
+ \nonfillstart
+ \let\Eflushright = \nonfillfinish
+ \advance\leftskip by 0pt plus 1fill
+ \gobble}
+
+% @quotation does normal linebreaking (hence we can't use \nonfillstart)
+% and narrows the margins.
+%
+\def\quotation{%
+ \begingroup\inENV %This group ends at the end of the @quotation body
+ {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
+ \singlespace
+ \parindent=0pt
+ % We have retained a nonzero parskip for the environment, since we're
+ % doing normal filling. So to avoid extra space below the environment...
+ \def\Equotation{\parskip = 0pt \nonfillfinish}%
+ %
+ % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
+ \ifx\nonarrowing\relax
+ \advance\leftskip by \lispnarrowing
+ \advance\rightskip by \lispnarrowing
+ \exdentamount = \lispnarrowing
+ \let\nonarrowing = \relax
+ \fi
+}
+
+\message{defuns,}
+% Define formatter for defuns
+% First, allow user to change definition object font (\df) internally
+\def\setdeffont #1 {\csname DEF#1\endcsname}
+
+\newskip\defbodyindent \defbodyindent=.4in
+\newskip\defargsindent \defargsindent=50pt
+\newskip\deftypemargin \deftypemargin=12pt
+\newskip\deflastargmargin \deflastargmargin=18pt
+
+\newcount\parencount
+% define \functionparens, which makes ( and ) and & do special things.
+% \functionparens affects the group it is contained in.
+\def\activeparens{%
+\catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
+\catcode`\[=\active \catcode`\]=\active}
+
+% Make control sequences which act like normal parenthesis chars.
+\let\lparen = ( \let\rparen = )
+
+{\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
+
+% Be sure that we always have a definition for `(', etc. For example,
+% if the fn name has parens in it, \boldbrax will not be in effect yet,
+% so TeX would otherwise complain about undefined control sequence.
+\global\let(=\lparen \global\let)=\rparen
+\global\let[=\lbrack \global\let]=\rbrack
+
+\gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
+\gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
+% This is used to turn on special parens
+% but make & act ordinary (given that it's active).
+\gdef\boldbraxnoamp{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb\let&=\ampnr}
+
+% Definitions of (, ) and & used in args for functions.
+% This is the definition of ( outside of all parentheses.
+\gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
+\global\advance\parencount by 1 }
+%
+% This is the definition of ( when already inside a level of parens.
+\gdef\opnested{\char`\(\global\advance\parencount by 1 }
+%
+\gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
+% also in that case restore the outer-level definition of (.
+\ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
+\global\advance \parencount by -1 }
+% If we encounter &foo, then turn on ()-hacking afterwards
+\gdef\amprm#1 {{\rm\}\let(=\oprm \let)=\clrm\ }
+%
+\gdef\normalparens{\boldbrax\let&=\ampnr}
+} % End of definition inside \activeparens
+%% These parens (in \boldbrax) actually are a little bolder than the
+%% contained text. This is especially needed for [ and ]
+\def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
+\def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
+
+% First, defname, which formats the header line itself.
+% #1 should be the function name.
+% #2 should be the type of definition, such as "Function".
+
+\def\defname #1#2{%
+% Get the values of \leftskip and \rightskip as they were
+% outside the @def...
+\dimen2=\leftskip
+\advance\dimen2 by -\defbodyindent
+\dimen3=\rightskip
+\advance\dimen3 by -\defbodyindent
+\noindent %
+\setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
+\dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
+\dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
+\parshape 2 0in \dimen0 \defargsindent \dimen1 %
+% Now output arg 2 ("Function" or some such)
+% ending at \deftypemargin from the right margin,
+% but stuck inside a box of width 0 so it does not interfere with linebreaking
+{% Adjust \hsize to exclude the ambient margins,
+% so that \rightline will obey them.
+\advance \hsize by -\dimen2 \advance \hsize by -\dimen3
+\rlap{\rightline{{\rm #2}\hskip \deftypemargin}}}%
+% Make all lines underfull and no complaints:
+\tolerance=10000 \hbadness=10000
+\advance\leftskip by -\defbodyindent
+\exdentamount=\defbodyindent
+{\df #1}\enskip % Generate function name
+}
+
+% Actually process the body of a definition
+% #1 should be the terminating control sequence, such as \Edefun.
+% #2 should be the "another name" control sequence, such as \defunx.
+% #3 should be the control sequence that actually processes the header,
+% such as \defunheader.
+
+\def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
+\medbreak %
+% Define the end token that this defining construct specifies
+% so that it will exit this group.
+\def#1{\endgraf\endgroup\medbreak}%
+\def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
+\parindent=0in
+\advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+\exdentamount=\defbodyindent
+\begingroup %
+\catcode 61=\active % 61 is `='
+\obeylines\activeparens\spacesplit#3}
+
+\def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
+\medbreak %
+% Define the end token that this defining construct specifies
+% so that it will exit this group.
+\def#1{\endgraf\endgroup\medbreak}%
+\def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
+\parindent=0in
+\advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+\exdentamount=\defbodyindent
+\begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
+
+\def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
+\medbreak %
+% Define the end token that this defining construct specifies
+% so that it will exit this group.
+\def#1{\endgraf\endgroup\medbreak}%
+\def#2##1 ##2 {\def#4{##1}%
+\begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
+\parindent=0in
+\advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+\exdentamount=\defbodyindent
+\begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
+
+% These parsing functions are similar to the preceding ones
+% except that they do not make parens into active characters.
+% These are used for "variables" since they have no arguments.
+
+\def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
+\medbreak %
+% Define the end token that this defining construct specifies
+% so that it will exit this group.
+\def#1{\endgraf\endgroup\medbreak}%
+\def#2{\begingroup\obeylines\spacesplit#3}%
+\parindent=0in
+\advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+\exdentamount=\defbodyindent
+\begingroup %
+\catcode 61=\active %
+\obeylines\spacesplit#3}
+
+% This is used for \def{tp,vr}parsebody. It could probably be used for
+% some of the others, too, with some judicious conditionals.
+%
+\def\parsebodycommon#1#2#3{%
+ \begingroup\inENV %
+ \medbreak %
+ % Define the end token that this defining construct specifies
+ % so that it will exit this group.
+ \def#1{\endgraf\endgroup\medbreak}%
+ \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
+ \parindent=0in
+ \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+ \exdentamount=\defbodyindent
+ \begingroup\obeylines
+}
+
+\def\defvrparsebody#1#2#3#4 {%
+ \parsebodycommon{#1}{#2}{#3}%
+ \spacesplit{#3{#4}}%
+}
+
+% This loses on `@deftp {Data Type} {struct termios}' -- it thinks the
+% type is just `struct', because we lose the braces in `{struct
+% termios}' when \spacesplit reads its undelimited argument. Sigh.
+% \let\deftpparsebody=\defvrparsebody
+%
+% So, to get around this, we put \empty in with the type name. That
+% way, TeX won't find exactly `{...}' as an undelimited argument, and
+% won't strip off the braces.
+%
+\def\deftpparsebody #1#2#3#4 {%
+ \parsebodycommon{#1}{#2}{#3}%
+ \spacesplit{\parsetpheaderline{#3{#4}}}\empty
+}
+
+% Fine, but then we have to eventually remove the \empty *and* the
+% braces (if any). That's what this does, putting the result in \tptemp.
+%
+\def\removeemptybraces\empty#1\relax{\def\tptemp{#1}}%
+
+% After \spacesplit has done its work, this is called -- #1 is the final
+% thing to call, #2 the type name (which starts with \empty), and #3
+% (which might be empty) the arguments.
+%
+\def\parsetpheaderline#1#2#3{%
+ \removeemptybraces#2\relax
+ #1{\tptemp}{#3}%
+}%
+
+\def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
+\medbreak %
+% Define the end token that this defining construct specifies
+% so that it will exit this group.
+\def#1{\endgraf\endgroup\medbreak}%
+\def#2##1 ##2 {\def#4{##1}%
+\begingroup\obeylines\spacesplit{#3{##2}}}%
+\parindent=0in
+\advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
+\exdentamount=\defbodyindent
+\begingroup\obeylines\spacesplit{#3{#5}}}
+
+% Split up #2 at the first space token.
+% call #1 with two arguments:
+% the first is all of #2 before the space token,
+% the second is all of #2 after that space token.
+% If #2 contains no space token, all of it is passed as the first arg
+% and the second is passed as empty.
+
+{\obeylines
+\gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
+\long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
+\ifx\relax #3%
+#1{#2}{}\else #1{#2}{#3#4}\fi}}
+
+% So much for the things common to all kinds of definitions.
+
+% Define @defun.
+
+% First, define the processing that is wanted for arguments of \defun
+% Use this to expand the args and terminate the paragraph they make up
+
+\def\defunargs #1{\functionparens \sl
+% Expand, preventing hyphenation at `-' chars.
+% Note that groups don't affect changes in \hyphenchar.
+\hyphenchar\tensl=0
+#1%
+\hyphenchar\tensl=45
+\ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
+\interlinepenalty=10000
+\advance\rightskip by 0pt plus 1fil
+\endgraf\penalty 10000\vskip -\parskip\penalty 10000%
+}
+
+\def\deftypefunargs #1{%
+% Expand, preventing hyphenation at `-' chars.
+% Note that groups don't affect changes in \hyphenchar.
+% Use \boldbraxnoamp, not \functionparens, so that & is not special.
+\boldbraxnoamp
+\tclose{#1}% avoid \code because of side effects on active chars
+\interlinepenalty=10000
+\advance\rightskip by 0pt plus 1fil
+\endgraf\penalty 10000\vskip -\parskip\penalty 10000%
+}
+
+% Do complete processing of one @defun or @defunx line already parsed.
+
+% @deffn Command forward-char nchars
+
+\def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
+
+\def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
+\begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% @defun == @deffn Function
+
+\def\defun{\defparsebody\Edefun\defunx\defunheader}
+
+\def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
+\begingroup\defname {#1}{Function}%
+\defunargs {#2}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% @deftypefun int foobar (int @var{foo}, float @var{bar})
+
+\def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
+
+% #1 is the data type. #2 is the name and args.
+\def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
+% #1 is the data type, #2 the name, #3 the args.
+\def\deftypefunheaderx #1#2 #3\relax{%
+\doind {fn}{\code{#2}}% Make entry in function index
+\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Function}%
+\deftypefunargs {#3}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
+
+\def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
+
+% \defheaderxcond#1\relax$$$
+% puts #1 in @code, followed by a space, but does nothing if #1 is null.
+\def\defheaderxcond#1#2$$${\ifx#1\relax\else\code{#1#2} \fi}
+
+% #1 is the classification. #2 is the data type. #3 is the name and args.
+\def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
+% #1 is the classification, #2 the data type, #3 the name, #4 the args.
+\def\deftypefnheaderx #1#2#3 #4\relax{%
+\doind {fn}{\code{#3}}% Make entry in function index
+\begingroup
+\normalparens % notably, turn off `&' magic, which prevents
+% at least some C++ text from working
+\defname {\defheaderxcond#2\relax$$$#3}{#1}%
+\deftypefunargs {#4}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% @defmac == @deffn Macro
+
+\def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
+
+\def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
+\begingroup\defname {#1}{Macro}%
+\defunargs {#2}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% @defspec == @deffn Special Form
+
+\def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
+
+\def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
+\begingroup\defname {#1}{Special Form}%
+\defunargs {#2}\endgroup %
+\catcode 61=\other % Turn off change made in \defparsebody
+}
+
+% This definition is run if you use @defunx
+% anywhere other than immediately after a @defun or @defunx.
+
+\def\deffnx #1 {\errmessage{@deffnx in invalid context}}
+\def\defunx #1 {\errmessage{@defunx in invalid context}}
+\def\defmacx #1 {\errmessage{@defmacx in invalid context}}
+\def\defspecx #1 {\errmessage{@defspecx in invalid context}}
+\def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
+\def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
+
+% @defmethod, and so on
+
+% @defop {Funny Method} foo-class frobnicate argument
+
+\def\defop #1 {\def\defoptype{#1}%
+\defopparsebody\Edefop\defopx\defopheader\defoptype}
+
+\def\defopheader #1#2#3{%
+\dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
+\begingroup\defname {#2}{\defoptype{} on #1}%
+\defunargs {#3}\endgroup %
+}
+
+% @defmethod == @defop Method
+
+\def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
+
+\def\defmethodheader #1#2#3{%
+\dosubind {fn}{\code{#2}}{on #1}% entry in function index
+\begingroup\defname {#2}{Method on #1}%
+\defunargs {#3}\endgroup %
+}
+
+% @defcv {Class Option} foo-class foo-flag
+
+\def\defcv #1 {\def\defcvtype{#1}%
+\defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
+
+\def\defcvarheader #1#2#3{%
+\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
+\begingroup\defname {#2}{\defcvtype{} of #1}%
+\defvarargs {#3}\endgroup %
+}
+
+% @defivar == @defcv {Instance Variable}
+
+\def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
+
+\def\defivarheader #1#2#3{%
+\dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
+\begingroup\defname {#2}{Instance Variable of #1}%
+\defvarargs {#3}\endgroup %
+}
+
+% These definitions are run if you use @defmethodx, etc.,
+% anywhere other than immediately after a @defmethod, etc.
+
+\def\defopx #1 {\errmessage{@defopx in invalid context}}
+\def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
+\def\defcvx #1 {\errmessage{@defcvx in invalid context}}
+\def\defivarx #1 {\errmessage{@defivarx in invalid context}}
+
+% Now @defvar
+
+% First, define the processing that is wanted for arguments of @defvar.
+% This is actually simple: just print them in roman.
+% This must expand the args and terminate the paragraph they make up
+\def\defvarargs #1{\normalparens #1%
+\interlinepenalty=10000
+\endgraf\penalty 10000\vskip -\parskip\penalty 10000}
+
+% @defvr Counter foo-count
+
+\def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
+
+\def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
+\begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
+
+% @defvar == @defvr Variable
+
+\def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
+
+\def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
+\begingroup\defname {#1}{Variable}%
+\defvarargs {#2}\endgroup %
+}
+
+% @defopt == @defvr {User Option}
+
+\def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
+
+\def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
+\begingroup\defname {#1}{User Option}%
+\defvarargs {#2}\endgroup %
+}
+
+% @deftypevar int foobar
+
+\def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
+
+% #1 is the data type. #2 is the name.
+\def\deftypevarheader #1#2{%
+\doind {vr}{\code{#2}}% Make entry in variables index
+\begingroup\defname {\defheaderxcond#1\relax$$$#2}{Variable}%
+\interlinepenalty=10000
+\endgraf\penalty 10000\vskip -\parskip\penalty 10000
+\endgroup}
+
+% @deftypevr {Global Flag} int enable
+
+\def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
+
+\def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
+\begingroup\defname {\defheaderxcond#2\relax$$$#3}{#1}
+\interlinepenalty=10000
+\endgraf\penalty 10000\vskip -\parskip\penalty 10000
+\endgroup}
+
+% This definition is run if you use @defvarx
+% anywhere other than immediately after a @defvar or @defvarx.
+
+\def\defvrx #1 {\errmessage{@defvrx in invalid context}}
+\def\defvarx #1 {\errmessage{@defvarx in invalid context}}
+\def\defoptx #1 {\errmessage{@defoptx in invalid context}}
+\def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
+\def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
+
+% Now define @deftp
+% Args are printed in bold, a slight difference from @defvar.
+
+\def\deftpargs #1{\bf \defvarargs{#1}}
+
+% @deftp Class window height width ...
+
+\def\deftp{\deftpparsebody\Edeftp\deftpx\deftpheader}
+
+\def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
+\begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
+
+% This definition is run if you use @deftpx, etc
+% anywhere other than immediately after a @deftp, etc.
+
+\def\deftpx #1 {\errmessage{@deftpx in invalid context}}
+
+
+\message{cross reference,}
+% Define cross-reference macros
+\newwrite \auxfile
+
+\newif\ifhavexrefs % True if xref values are known.
+\newif\ifwarnedxrefs % True if we warned once that they aren't known.
+
+% @inforef is simple.
+\def\inforef #1{\inforefzzz #1,,,,**}
+\def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
+ node \samp{\ignorespaces#1{}}}
+
+% \setref{foo} defines a cross-reference point named foo.
+
+\def\setref#1{%
+\dosetq{#1-title}{Ytitle}%
+\dosetq{#1-pg}{Ypagenumber}%
+\dosetq{#1-snt}{Ysectionnumberandtype}}
+
+\def\unnumbsetref#1{%
+\dosetq{#1-title}{Ytitle}%
+\dosetq{#1-pg}{Ypagenumber}%
+\dosetq{#1-snt}{Ynothing}}
+
+\def\appendixsetref#1{%
+\dosetq{#1-title}{Ytitle}%
+\dosetq{#1-pg}{Ypagenumber}%
+\dosetq{#1-snt}{Yappendixletterandtype}}
+
+% \xref, \pxref, and \ref generate cross-references to specified points.
+% For \xrefX, #1 is the node name, #2 the name of the Info
+% cross-reference, #3 the printed node name, #4 the name of the Info
+% file, #5 the name of the printed manual. All but the node name can be
+% omitted.
+%
+\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
+\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
+\def\ref#1{\xrefX[#1,,,,,,,]}
+\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
+ \def\printedmanual{\ignorespaces #5}%
+ \def\printednodename{\ignorespaces #3}%
+ \setbox1=\hbox{\printedmanual}%
+ \setbox0=\hbox{\printednodename}%
+ \ifdim \wd0 = 0pt
+ % No printed node name was explicitly given.
+ \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
+ % Use the node name inside the square brackets.
+ \def\printednodename{\ignorespaces #1}%
+ \else
+ % Use the actual chapter/section title appear inside
+ % the square brackets. Use the real section title if we have it.
+ \ifdim \wd1>0pt%
+ % It is in another manual, so we don't have it.
+ \def\printednodename{\ignorespaces #1}%
+ \else
+ \ifhavexrefs
+ % We know the real title if we have the xref values.
+ \def\printednodename{\refx{#1-title}{}}%
+ \else
+ % Otherwise just copy the Info node name.
+ \def\printednodename{\ignorespaces #1}%
+ \fi%
+ \fi
+ \fi
+ \fi
+ %
+ % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
+ % insert empty discretionaries after hyphens, which means that it will
+ % not find a line break at a hyphen in a node names. Since some manuals
+ % are best written with fairly long node names, containing hyphens, this
+ % is a loss. Therefore, we give the text of the node name again, so it
+ % is as if TeX is seeing it for the first time.
+ \ifdim \wd1 > 0pt
+ \putwordsection{} ``\printednodename'' in \cite{\printedmanual}%
+ \else
+ % _ (for example) has to be the character _ for the purposes of the
+ % control sequence corresponding to the node, but it has to expand
+ % into the usual \leavevmode...\vrule stuff for purposes of
+ % printing. So we \turnoffactive for the \refx-snt, back on for the
+ % printing, back off for the \refx-pg.
+ {\turnoffactive \refx{#1-snt}{}}%
+ \space [\printednodename],\space
+ \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
+ \fi
+\endgroup}
+
+% \dosetq is the interface for calls from other macros
+
+% Use \turnoffactive so that punctuation chars such as underscore
+% work in node names.
+\def\dosetq #1#2{{\let\folio=0 \turnoffactive \auxhat%
+\edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
+\next}}
+
+% \internalsetq {foo}{page} expands into
+% CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
+% When the aux file is read, ' is the escape character
+
+\def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
+
+% Things to be expanded by \internalsetq
+
+\def\Ypagenumber{\folio}
+
+\def\Ytitle{\thissection}
+
+\def\Ynothing{}
+
+\def\Ysectionnumberandtype{%
+\ifnum\secno=0 \putwordChapter\xreftie\the\chapno %
+\else \ifnum \subsecno=0 \putwordSection\xreftie\the\chapno.\the\secno %
+\else \ifnum \subsubsecno=0 %
+\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno %
+\else %
+\putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
+\fi \fi \fi }
+
+\def\Yappendixletterandtype{%
+\ifnum\secno=0 \putwordAppendix\xreftie'char\the\appendixno{}%
+\else \ifnum \subsecno=0 \putwordSection\xreftie'char\the\appendixno.\the\secno %
+\else \ifnum \subsubsecno=0 %
+\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
+\else %
+\putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
+\fi \fi \fi }
+
+\gdef\xreftie{'tie}
+
+% Use TeX 3.0's \inputlineno to get the line number, for better error
+% messages, but if we're using an old version of TeX, don't do anything.
+%
+\ifx\inputlineno\thisisundefined
+ \let\linenumber = \empty % Non-3.0.
+\else
+ \def\linenumber{\the\inputlineno:\space}
+\fi
+
+% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
+% If its value is nonempty, SUFFIX is output afterward.
+
+\def\refx#1#2{%
+ \expandafter\ifx\csname X#1\endcsname\relax
+ % If not defined, say something at least.
+ $\langle$un\-de\-fined$\rangle$%
+ \ifhavexrefs
+ \message{\linenumber Undefined cross reference `#1'.}%
+ \else
+ \ifwarnedxrefs\else
+ \global\warnedxrefstrue
+ \message{Cross reference values unknown; you must run TeX again.}%
+ \fi
+ \fi
+ \else
+ % It's defined, so just use it.
+ \csname X#1\endcsname
+ \fi
+ #2% Output the suffix in any case.
+}
+
+% Read the last existing aux file, if any. No error if none exists.
+
+% This is the macro invoked by entries in the aux file.
+\def\xrdef #1#2{
+{\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
+
+\def\readauxfile{%
+\begingroup
+\catcode `\^^@=\other
+\catcode `\\ 1=\other
+\catcode `\\ 2=\other
+\catcode `\^^C=\other
+\catcode `\^^D=\other
+\catcode `\^^E=\other
+\catcode `\^^F=\other
+\catcode `\^^G=\other
+\catcode `\^^H=\other
+\catcode `\\v=\other
+\catcode `\^^L=\other
+\catcode `\\ e=\other
+\catcode `\\ f=\other
+\catcode `\\10=\other
+\catcode `\\11=\other
+\catcode `\\12=\other
+\catcode `\\13=\other
+\catcode `\\14=\other
+\catcode `\\15=\other
+\catcode `\\16=\other
+\catcode `\\17=\other
+\catcode `\\18=\other
+\catcode `\\19=\other
+\catcode 26=\other
+\catcode `\^^[=\other
+\catcode `\^^\=\other
+\catcode `\^^]=\other
+\catcode `\^^^=\other
+\catcode `\^^_=\other
+\catcode `\@=\other
+\catcode `\^=\other
+\catcode `\~=\other
+\catcode `\[=\other
+\catcode `\]=\other
+\catcode`\"=\other
+\catcode`\_=\other
+\catcode`\|=\other
+\catcode`\<=\other
+\catcode`\>=\other
+\catcode `\$=\other
+\catcode `\#=\other
+\catcode `\&=\other
+% `\+ does not work, so use 43.
+\catcode 43=\other
+% Make the characters 128-255 be printing characters
+{%
+ \count 1=128
+ \def\loop{%
+ \catcode\count 1=\other
+ \advance\count 1 by 1
+ \ifnum \count 1<256 \loop \fi
+ }%
+}%
+% the aux file uses ' as the escape.
+% Turn off \ as an escape so we do not lose on
+% entries which were dumped with control sequences in their names.
+% For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
+% Reference to such entries still does not work the way one would wish,
+% but at least they do not bomb out when the aux file is read in.
+\catcode `\{=1 \catcode `\}=2
+\catcode `\%=\other
+\catcode `\'=0
+\catcode`\^=7 % to make ^^e4 etc usable in xref tags
+\catcode `\\=\other
+\openin 1 \jobname.aux
+\ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
+\global\warnedobstrue
+\fi
+% Open the new aux file. Tex will close it automatically at exit.
+\openout \auxfile=\jobname.aux
+\endgroup}
+
+
+% Footnotes.
+
+\newcount \footnoteno
+
+% The trailing space in the following definition for supereject is
+% vital for proper filling; pages come out unaligned when you do a
+% pagealignmacro call if that space before the closing brace is
+% removed. (Generally, numeric constants should always be followed by a
+% space to prevent strange expansion errors.)
+\def\supereject{\par\penalty -20000\footnoteno =0 }
+
+% @footnotestyle is meaningful for info output only..
+\let\footnotestyle=\comment
+
+\let\ptexfootnote=\footnote
+
+{\catcode `\@=11
+%
+% Auto-number footnotes. Otherwise like plain.
+\gdef\footnote{%
+ \global\advance\footnoteno by \@ne
+ \edef\thisfootno{$^{\the\footnoteno}$}%
+ %
+ % In case the footnote comes at the end of a sentence, preserve the
+ % extra spacing after we do the footnote number.
+ \let\@sf\empty
+ \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
+ %
+ % Remove inadvertent blank space before typesetting the footnote number.
+ \unskip
+ \thisfootno\@sf
+ \footnotezzz
+}%
+
+% Don't bother with the trickery in plain.tex to not require the
+% footnote text as a parameter. Our footnotes don't need to be so general.
+%
+\long\gdef\footnotezzz#1{\insert\footins{%
+ % We want to typeset this text as a normal paragraph, even if the
+ % footnote reference occurs in (for example) a display environment.
+ % So reset some parameters.
+ \interlinepenalty\interfootnotelinepenalty
+ \splittopskip\ht\strutbox % top baseline for broken footnotes
+ \splitmaxdepth\dp\strutbox
+ \floatingpenalty\@MM
+ \leftskip\z@skip
+ \rightskip\z@skip
+ \spaceskip\z@skip
+ \xspaceskip\z@skip
+ \parindent\defaultparindent
+ %
+ % Hang the footnote text off the number.
+ \hang
+ \textindent{\thisfootno}%
+ %
+ % Don't crash into the line above the footnote text. Since this
+ % expands into a box, it must come within the paragraph, lest it
+ % provide a place where TeX can split the footnote.
+ \footstrut
+ #1\strut}%
+}
+
+}%end \catcode `\@=11
+
+% Set the baselineskip to #1, and the lineskip and strut size
+% correspondingly. There is no deep meaning behind these magic numbers
+% used as factors; they just match (closely enough) what Knuth defined.
+%
+\def\lineskipfactor{.08333}
+\def\strutheightpercent{.70833}
+\def\strutdepthpercent {.29167}
+%
+\def\setleading#1{%
+ \normalbaselineskip = #1\relax
+ \normallineskip = \lineskipfactor\normalbaselineskip
+ \normalbaselines
+ \setbox\strutbox =\hbox{%
+ \vrule width0pt height\strutheightpercent\baselineskip
+ depth \strutdepthpercent \baselineskip
+ }%
+}
+
+% @| inserts a changebar to the left of the current line. It should
+% surround any changed text. This approach does *not* work if the
+% change spans more than two lines of output. To handle that, we would
+% have adopt a much more difficult approach (putting marks into the main
+% vertical list for the beginning and end of each change).
+%
+\def\|{%
+ % \vadjust can only be used in horizontal mode.
+ \leavevmode
+ %
+ % Append this vertical mode material after the current line in the output.
+ \vadjust{%
+ % We want to insert a rule with the height and depth of the current
+ % leading; that is exactly what \strutbox is supposed to record.
+ \vskip-\baselineskip
+ %
+ % \vadjust-items are inserted at the left edge of the type. So
+ % the \llap here moves out into the left-hand margin.
+ \llap{%
+ %
+ % For a thicker or thinner bar, change the `1pt'.
+ \vrule height\baselineskip width1pt
+ %
+ % This is the space between the bar and the text.
+ \hskip 12pt
+ }%
+ }%
+}
+
+% For a final copy, take out the rectangles
+% that mark overfull boxes (in case you have decided
+% that the text looks ok even though it passes the margin).
+%
+\def\finalout{\overfullrule=0pt}
+
+
+% End of control word definitions.
+
+\message{and turning on texinfo input format.}
+
+\def\openindices{%
+ \newindex{cp}%
+ \newcodeindex{fn}%
+ \newcodeindex{vr}%
+ \newcodeindex{tp}%
+ \newcodeindex{ky}%
+ \newcodeindex{pg}%
+}
+
+% Set some numeric style parameters, for 8.5 x 11 format.
+
+\hsize = 6in
+\hoffset = .25in
+\newdimen\defaultparindent \defaultparindent = 15pt
+\parindent = \defaultparindent
+\parskip 3pt plus 2pt minus 1pt
+\setleading{13.2pt}
+\advance\topskip by 1.2cm
+
+\chapheadingskip = 15pt plus 4pt minus 2pt
+\secheadingskip = 12pt plus 3pt minus 2pt
+\subsecheadingskip = 9pt plus 2pt minus 2pt
+
+% Prevent underfull vbox error messages.
+\vbadness=10000
+
+% Following George Bush, just get rid of widows and orphans.
+\widowpenalty=10000
+\clubpenalty=10000
+
+% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
+% using an old version of TeX, don't do anything. We want the amount of
+% stretch added to depend on the line length, hence the dependence on
+% \hsize. This makes it come to about 9pt for the 8.5x11 format.
+%
+\ifx\emergencystretch\thisisundefined
+ % Allow us to assign to \emergencystretch anyway.
+ \def\emergencystretch{\dimen0}%
+\else
+ \emergencystretch = \hsize
+ \divide\emergencystretch by 45
+\fi
+
+% Use @smallbook to reset parameters for 7x9.5 format (or else 7x9.25)
+\def\smallbook{
+ \global\chapheadingskip = 15pt plus 4pt minus 2pt
+ \global\secheadingskip = 12pt plus 3pt minus 2pt
+ \global\subsecheadingskip = 9pt plus 2pt minus 2pt
+ %
+ \global\lispnarrowing = 0.3in
+ \setleading{12pt}
+ \advance\topskip by -1cm
+ \global\parskip 2pt plus 1pt
+ \global\hsize = 5in
+ \global\vsize=7.5in
+ \global\tolerance=700
+ \global\hfuzz=1pt
+ \global\contentsrightmargin=0pt
+ \global\deftypemargin=0pt
+ \global\defbodyindent=.5cm
+ %
+ \global\pagewidth=\hsize
+ \global\pageheight=\vsize
+ %
+ \global\let\smalllisp=\smalllispx
+ \global\let\smallexample=\smalllispx
+ \global\def\Esmallexample{\Esmalllisp}
+}
+
+% Use @afourpaper to print on European A4 paper.
+\def\afourpaper{
+\global\tolerance=700
+\global\hfuzz=1pt
+\setleading{12pt}
+\global\parskip 15pt plus 1pt
+
+\global\vsize= 53\baselineskip
+\advance\vsize by \topskip
+%\global\hsize= 5.85in % A4 wide 10pt
+\global\hsize= 6.5in
+\global\outerhsize=\hsize
+\global\advance\outerhsize by 0.5in
+\global\outervsize=\vsize
+\global\advance\outervsize by 0.6in
+
+\global\pagewidth=\hsize
+\global\pageheight=\vsize
+}
+
+\bindingoffset=0pt
+\normaloffset=\hoffset
+\pagewidth=\hsize
+\pageheight=\vsize
+
+% Allow control of the text dimensions. Parameters in order: textheight;
+% textwidth; voffset; hoffset; binding offset; topskip.
+% All require a dimension;
+% header is additional; added length extends the bottom of the page.
+
+\def\changepagesizes#1#2#3#4#5#6{
+ \global\vsize= #1
+ \global\topskip= #6
+ \advance\vsize by \topskip
+ \global\voffset= #3
+ \global\hsize= #2
+ \global\outerhsize=\hsize
+ \global\advance\outerhsize by 0.5in
+ \global\outervsize=\vsize
+ \global\advance\outervsize by 0.6in
+ \global\pagewidth=\hsize
+ \global\pageheight=\vsize
+ \global\normaloffset= #4
+ \global\bindingoffset= #5}
+
+% A specific text layout, 24x15cm overall, intended for A4 paper. Top margin
+% 29mm, hence bottom margin 28mm, nominal side margin 3cm.
+\def\afourlatex
+ {\global\tolerance=700
+ \global\hfuzz=1pt
+ \setleading{12pt}
+ \global\parskip 15pt plus 1pt
+ \advance\baselineskip by 1.6pt
+ \changepagesizes{237mm}{150mm}{3.6mm}{3.6mm}{3mm}{7mm}
+ }
+
+% Use @afourwide to print on European A4 paper in wide format.
+\def\afourwide{\afourpaper
+\changepagesizes{9.5in}{6.5in}{\hoffset}{\normaloffset}{\bindingoffset}{7mm}}
+
+% Define macros to output various characters with catcode for normal text.
+\catcode`\"=\other
+\catcode`\~=\other
+\catcode`\^=\other
+\catcode`\_=\other
+\catcode`\|=\other
+\catcode`\<=\other
+\catcode`\>=\other
+\catcode`\+=\other
+\def\normaldoublequote{"}
+\def\normaltilde{~}
+\def\normalcaret{^}
+\def\normalunderscore{_}
+\def\normalverticalbar{|}
+\def\normalless{<}
+\def\normalgreater{>}
+\def\normalplus{+}
+
+% This macro is used to make a character print one way in ttfont
+% where it can probably just be output, and another way in other fonts,
+% where something hairier probably needs to be done.
+%
+% #1 is what to print if we are indeed using \tt; #2 is what to print
+% otherwise. Since all the Computer Modern typewriter fonts have zero
+% interword stretch (and shrink), and it is reasonable to expect all
+% typewriter fonts to have this, we can check that font parameter.
+%
+\def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
+
+% Turn off all special characters except @
+% (and those which the user can use as if they were ordinary).
+% Most of these we simply print from the \tt font, but for some, we can
+% use math or other variants that look better in normal text.
+
+\catcode`\"=\active
+\def\activedoublequote{{\tt \char '042}}
+\let"=\activedoublequote
+\catcode`\~=\active
+\def~{{\tt \char '176}}
+\chardef\hat=`\^
+\catcode`\^=\active
+\def\auxhat{\def^{'hat}}
+\def^{{\tt \hat}}
+
+\catcode`\_=\active
+\def_{\ifusingtt\normalunderscore\_}
+% Subroutine for the previous macro.
+\def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}}
+
+\catcode`\|=\active
+\def|{{\tt \char '174}}
+\chardef \less=`\<
+\catcode`\<=\active
+\def<{{\tt \less}}
+\chardef \gtr=`\>
+\catcode`\>=\active
+\def>{{\tt \gtr}}
+\catcode`\+=\active
+\def+{{\tt \char 43}}
+%\catcode 27=\active
+%\def^^[{$\diamondsuit$}
+
+% Set up an active definition for =, but don't enable it most of the time.
+{\catcode`\==\active
+\global\def={{\tt \char 61}}}
+
+\catcode`+=\active
+\catcode`\_=\active
+
+% If a .fmt file is being used, characters that might appear in a file
+% name cannot be active until we have parsed the command line.
+% So turn them off again, and have \everyjob (or @setfilename) turn them on.
+% \otherifyactive is called near the end of this file.
+\def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
+
+\catcode`\@=0
+
+% \rawbackslashxx output one backslash character in current font
+\global\chardef\rawbackslashxx=`\\
+%{\catcode`\\=\other
+%@gdef@rawbackslashxx{\}}
+
+% \rawbackslash redefines \ as input to do \rawbackslashxx.
+{\catcode`\\=\active
+@gdef@rawbackslash{@let\=@rawbackslashxx }}
+
+% \normalbackslash outputs one backslash in fixed width font.
+\def\normalbackslash{{\tt\rawbackslashxx}}
+
+% Say @foo, not \foo, in error messages.
+\escapechar=`\@
+
+% \catcode 17=0 % Define control-q
+\catcode`\\=\active
+
+% Used sometimes to turn off (effectively) the active characters
+% even after parsing them.
+@def@turnoffactive{@let"=@normaldoublequote
+@let\=@realbackslash
+@let~=@normaltilde
+@let^=@normalcaret
+@let_=@normalunderscore
+@let|=@normalverticalbar
+@let<=@normalless
+@let>=@normalgreater
+@let+=@normalplus}
+
+@def@normalturnoffactive{@let"=@normaldoublequote
+@let\=@normalbackslash
+@let~=@normaltilde
+@let^=@normalcaret
+@let_=@normalunderscore
+@let|=@normalverticalbar
+@let<=@normalless
+@let>=@normalgreater
+@let+=@normalplus}
+
+% Make _ and + \other characters, temporarily.
+% This is canceled by @fixbackslash.
+@otherifyactive
+
+% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
+% That is what \eatinput is for; after that, the `\' should revert to printing
+% a backslash.
+%
+@gdef@eatinput input texinfo{@fixbackslash}
+@global@let\ = @eatinput
+
+% On the other hand, perhaps the file did not have a `\input texinfo'. Then
+% the first `\{ in the file would cause an error. This macro tries to fix
+% that, assuming it is called before the first `\' could plausibly occur.
+% Also back turn on active characters that might appear in the input
+% file name, in case not using a pre-dumped format.
+%
+@gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi
+ @catcode`+=@active @catcode`@_=@active}
+
+%% These look ok in all fonts, so just make them not special. The @rm below
+%% makes sure that the current font starts out as the newly loaded cmr10
+@catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
+
+@textfonts
+@rm
+
+@c Local variables:
+@c page-delimiter: "^\\\\message"
+@c End:
int tty;
TIOTYPE *tiop;
{
-#if defined (TIOCGWINSZ)
set_winsize (tty);
-#endif
tiop->flags = tiop->lflag = 0;
{
int ioctl_ret;
-#if defined (TIOCGWINSZ)
set_winsize (tty);
-#endif
while (1)
{
#endif
#include <sys/types.h>
-#include <stdio.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
if (ignore_env == 0 && (ss = get_env_value ("COLUMNS")))
screenwidth = atoi (ss);
-#if !defined(__DJGPP__)
if (screenwidth <= 0 && term_string_buffer)
screenwidth = tgetnum ("co");
-#endif
}
/* Environment variable LINES overrides setting of "li" if IGNORE_ENV
if (ignore_env == 0 && (ss = get_env_value ("LINES")))
screenheight = atoi (ss);
-#if !defined(__DJGPP__)
if (screenheight <= 0 && term_string_buffer)
screenheight = tgetnum ("li");
-#endif
}
/* If all else fails, default to 80x24 terminal. */
get_term_capabilities (bp)
char **bp;
{
-#if !defined(__DJGPP__)
register int i;
for (i = 0; i < NUM_TC_STRINGS; i++)
*(tc_strings[i].tc_value) = tgetstr (tc_strings[i].tc_var, bp);
-#endif
tcap_initialized = 1;
}
void
_rl_enable_meta_key ()
{
-#if !defined(__DJGPP__)
if (term_has_meta && term_mm)
tputs (term_mm, 1, _rl_output_character_function);
-#endif
}
void
_rl_control_keypad (on)
int on;
{
-#if !defined(__DJGPP__)
if (on && term_ks)
tputs (term_ks, 1, _rl_output_character_function);
else if (!on && term_ke)
tputs (term_ke, 1, _rl_output_character_function);
-#endif
}
projects / thirdparty / binutils-gdb.git / commitdiff
