From a44161c313d46a1b10fd764728a089c26037710a Mon Sep 17 00:00:00 2001 From: Elena Zannoni Date: Fri, 7 Jul 2000 19:14:18 +0000 Subject: [PATCH] Import of readline 4.0 --- readline/Makefile.in | 48 +- readline/acconfig.h | 28 +- readline/config.h.in | 99 +- readline/configure | 432 +-- readline/configure.in | 40 +- readline/display.c | 21 - readline/doc/history.dvi | Bin 0 -> 48188 bytes readline/doc/history.html | 1161 ++++++++ readline/doc/history.info | 788 ++++++ readline/doc/history.ps | 2265 +++++++++++++++ readline/doc/hsuser.texinfo | 4 +- readline/doc/readline.dvi | Bin 0 -> 199980 bytes readline/doc/readline.html | 4230 ++++++++++++++++++++++++++++ readline/doc/readline.info | 3039 ++++++++++++++++++++ readline/doc/readline.ps | 5225 +++++++++++++++++++++++++++++++++++ readline/doc/texinfo.tex | 4692 +++++++++++++++++++++++++++++++ readline/rltty.c | 4 - readline/shell.c | 1 - readline/terminal.c | 10 - 19 files changed, 21620 insertions(+), 467 deletions(-) create mode 100644 readline/doc/history.dvi create mode 100644 readline/doc/history.html create mode 100644 readline/doc/history.info create mode 100644 readline/doc/history.ps create mode 100644 readline/doc/readline.dvi create mode 100644 readline/doc/readline.html create mode 100644 readline/doc/readline.info create mode 100644 readline/doc/readline.ps create mode 100644 readline/doc/texinfo.tex diff --git a/readline/Makefile.in b/readline/Makefile.in index 5c667ed69f5..746c83c14a3 100644 --- a/readline/Makefile.in +++ b/readline/Makefile.in @@ -1,6 +1,6 @@ ## -*- 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 @@ -19,7 +19,7 @@ RL_LIBRARY_VERSION = @LIBVERSION@ RL_LIBRARY_NAME = readline srcdir = @srcdir@ -VPATH = @srcdir@ +VPATH = .:@srcdir@ top_srcdir = @top_srcdir@ BUILD_DIR = @BUILD_DIR@ @@ -147,9 +147,9 @@ stamp-h: config.status $(srcdir)/config.h.in 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 @@ -165,30 +165,20 @@ examples: force 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) \ diff --git a/readline/acconfig.h b/readline/acconfig.h index 577cf9c7d49..4f4223886c2 100644 --- a/readline/acconfig.h +++ b/readline/acconfig.h @@ -17,38 +17,12 @@ /* 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 - /* Leave that blank line there!! Autoheader needs it. If you're adding to this file, keep in mind: diff --git a/readline/config.h.in b/readline/config.h.in index 87f807fa6eb..65927a8440d 100644 --- a/readline/config.h.in +++ b/readline/config.h.in @@ -1,60 +1,17 @@ /* 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 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. */ @@ -66,27 +23,26 @@ /* 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 header file. */ #undef HAVE_DIRENT_H -/* Define if you have the header file. */ -#undef HAVE_LOCALE_H - /* Define if you have the header file. */ #undef HAVE_NDIR_H -/* Define if you have the header file. */ -#undef HAVE_STDARG_H - /* Define if you have the header file. */ #undef HAVE_STDLIB_H @@ -128,6 +84,43 @@ /* Define if you have the header file. */ #undef HAVE_VARARGS_H + +/* Define if you have the 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. */ diff --git a/readline/configure b/readline/configure index cdcdf88bae4..454a177e35d 100755 --- a/readline/configure +++ b/readline/configure @@ -1,6 +1,6 @@ #! /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 @@ -92,7 +92,7 @@ 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 @@ -121,7 +121,6 @@ program_suffix=NONE program_transform_name=s,x,x, silent= site= -sitefile= srcdir= target=NONE verbose= @@ -143,7 +142,6 @@ mandir='${prefix}/man' # Initialize some other variables. subdirs= MFLAGS= MAKEFLAGS= -SHELL=${CONFIG_SHELL-/bin/sh} # Maximum number of lines to put in a shell here document. ac_max_here_lines=12 @@ -236,7 +234,6 @@ Configuration: --help print this message --no-create do not create output files --quiet, --silent do not print \`checking...' messages - --site-file=FILE use FILE as the site file --version print the version of autoconf that created configure Directory and file names: --prefix=PREFIX install architecture-independent files in PREFIX @@ -407,11 +404,6 @@ EOF -site=* | --site=* | --sit=*) site="$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="$ac_optarg" ;; - -srcdir | --srcdir | --srcdi | --srcd | --src | --sr) ac_prev=srcdir ;; -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*) @@ -433,7 +425,7 @@ EOF verbose=yes ;; -version | --version | --versio | --versi | --vers) - echo "configure generated by autoconf version 2.13" + echo "configure generated by autoconf version 2.12" exit 0 ;; -with-* | --with-*) @@ -577,16 +569,12 @@ fi srcdir=`echo "${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 $CONFIG_SITE; do if test -r "$ac_site_file"; then @@ -607,11 +595,9 @@ 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 -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 @@ -629,9 +615,8 @@ fi - 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" @@ -643,34 +628,35 @@ for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do fi done if test -z "$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/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` @@ -697,16 +683,15 @@ test -z "$CFLAGS" && CFLAGS=-g auto_cflags=1 # 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" @@ -727,17 +712,16 @@ if test -z "$CC"; then # 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 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="$IFS"; IFS=":" + IFS="${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 @@ -772,61 +756,25 @@ else 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="$CC" # Let the user override the test. -else - IFS="${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="$ac_save_ifs" -fi -fi -CC="$ac_cv_prog_CC" -if test -n "$CC"; then - echo "$ac_t""$CC" 1>&6 -else - echo "$ac_t""no" 1>&6 -fi - ;; - 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 <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then +if { (eval echo configure:778: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then ac_cv_prog_cc_works=yes # If we can't run a trivial program, we are probably using a cross compiler. if (./conftest; exit) 2>/dev/null; then @@ -840,24 +788,18 @@ else ac_cv_prog_cc_works=no fi rm -fr conftest* -ac_ext=c -# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. -ac_cpp='$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) $ac_c" 1>&6 else @@ -866,7 +808,7 @@ else yes; #endif EOF -if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:870: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then +if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:812: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then ac_cv_prog_gcc=yes else ac_cv_prog_gcc=no @@ -877,15 +819,11 @@ echo "$ac_t""$ac_cv_prog_gcc" 1>&6 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) $ac_c" 1>&6 else @@ -900,24 +838,20 @@ rm -f conftest* fi echo "$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 "$CPP"; then CPP= @@ -932,14 +866,14 @@ else # On the NeXT, cc -E runs the code through the compiler's parser, # not just through cpp. cat > conftest.$ac_ext < 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 @@ -949,31 +883,14 @@ else rm -rf conftest* CPP="${CC-cc} -E -traditional-cpp" cat > conftest.$ac_ext < 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.$ac_ext < -Syntax Error -EOF -ac_try="$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 @@ -985,8 +902,6 @@ else fi rm -f conftest* fi -rm -f conftest* -fi rm -f conftest* ac_cv_prog_CPP="$CPP" fi @@ -998,18 +913,18 @@ echo "$ac_t""$CPP" 1>&6 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 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_$ac_safe=yes" @@ -1046,52 +961,18 @@ EOF fi - -if test "x$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 < Autoconf TIOCGETP @@ -1109,7 +990,7 @@ rm -f conftest* if test $ac_cv_prog_gcc_traditional = no; then cat > conftest.$ac_ext < Autoconf TCGETA @@ -1137,30 +1018,28 @@ fi # 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" @@ -1190,23 +1069,20 @@ echo "$ac_t""$INSTALL" 1>&6 # 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" @@ -1227,16 +1103,15 @@ test -n "$ARFLAGS" || ARFLAGS="cr" # 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" @@ -1259,12 +1134,12 @@ MAKE_SHELL=/bin/sh 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 < #include @@ -1281,7 +1156,7 @@ int main() { 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 @@ -1301,12 +1176,12 @@ EOF 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 < #include @@ -1361,12 +1236,12 @@ for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.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 < #include <$ac_hdr> @@ -1374,7 +1249,7 @@ int main() { DIR *dirp = 0; ; return 0; } EOF -if { (eval echo configure:1378: \"$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 @@ -1399,7 +1274,7 @@ done # 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) $ac_c" 1>&6 @@ -1407,7 +1282,7 @@ else ac_save_LIBS="$LIBS" LIBS="-ldir $LIBS" cat > conftest.$ac_ext <&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 @@ -1440,7 +1315,7 @@ fi 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) $ac_c" 1>&6 @@ -1448,7 +1323,7 @@ else ac_save_LIBS="$LIBS" LIBS="-lx $LIBS" cat > conftest.$ac_ext <&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 @@ -1485,12 +1360,12 @@ fi 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 <&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 @@ -1539,7 +1414,7 @@ done 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) $ac_c" 1>&6 else @@ -1547,7 +1422,7 @@ else ac_cv_func_strcoll_works=no else cat > conftest.$ac_ext < main () @@ -1557,7 +1432,7 @@ 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 $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null then ac_cv_func_strcoll_works=yes else @@ -1586,18 +1461,18 @@ for ac_hdr in unistd.h stdlib.h varargs.h stdarg.h string.h \ do ac_safe=`echo "$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 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" @@ -1625,13 +1500,13 @@ done 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 < int main() { @@ -1644,7 +1519,7 @@ 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 $ac_link) 2>&5; } && test -s conftest; then rm -rf conftest* bash_cv_signal_vintage=posix else @@ -1653,7 +1528,7 @@ else rm -rf conftest* cat > conftest.$ac_ext < int main() { @@ -1663,7 +1538,7 @@ 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 $ac_link) 2>&5; } && test -s conftest; then rm -rf conftest* bash_cv_signal_vintage=4.2bsd else @@ -1672,7 +1547,7 @@ else rm -rf conftest* cat > conftest.$ac_ext < @@ -1685,7 +1560,7 @@ int main() { ; 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 @@ -1726,7 +1601,7 @@ fi 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) $ac_c" 1>&6 else @@ -1736,7 +1611,7 @@ else else cat > conftest.$ac_ext < @@ -1783,7 +1658,7 @@ main() } 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 @@ -1808,7 +1683,7 @@ fi 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) $ac_c" 1>&6 else @@ -1818,7 +1693,7 @@ else else cat > conftest.$ac_ext <&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 @@ -1882,12 +1757,12 @@ EOF 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 < @@ -1897,7 +1772,7 @@ int main() { 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 @@ -1918,12 +1793,12 @@ EOF 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 < #include @@ -1934,7 +1809,7 @@ int main() { 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 @@ -1956,7 +1831,7 @@ fi 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) $ac_c" 1>&6 else @@ -1966,7 +1841,7 @@ else else cat > conftest.$ac_ext < @@ -2005,7 +1880,7 @@ char *v[]; } 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 @@ -2029,12 +1904,12 @@ fi 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 < #include @@ -2049,7 +1924,7 @@ int main() { 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 @@ -2069,12 +1944,12 @@ EOF 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 < #include @@ -2082,7 +1957,7 @@ int main() { 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 @@ -2103,12 +1978,12 @@ EOF 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 < #include @@ -2116,7 +1991,7 @@ int main() { 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 @@ -2137,12 +2012,12 @@ EOF 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 < #include @@ -2150,7 +2025,7 @@ int main() { 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 @@ -2171,19 +2046,19 @@ EOF 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 < 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 @@ -2204,12 +2079,12 @@ EOF 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 < #include @@ -2217,7 +2092,7 @@ int main() { 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 $ac_compile) 2>&5; }; then rm -rf conftest* bash_cv_struct_winsize_header=ioctl_h else @@ -2225,7 +2100,7 @@ else cat conftest.$ac_ext >&5 rm -rf conftest* cat > conftest.$ac_ext < #include @@ -2233,7 +2108,7 @@ int main() { struct winsize x; ; return 0; } EOF -if { (eval echo configure:2237: \"$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 @@ -2266,12 +2141,12 @@ fi 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 < @@ -2300,7 +2175,7 @@ struct dirent d; int z; z = d.d_ino; ; 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 @@ -2322,12 +2197,12 @@ fi 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 < @@ -2356,7 +2231,7 @@ struct dirent d; int z; z = d.d_fileno; ; 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 $ac_compile) 2>&5; }; then rm -rf conftest* bash_cv_dirent_has_d_fileno=yes else @@ -2385,14 +2260,14 @@ if test "X$bash_cv_termcap_lib" = "X"; then _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) $ac_c" 1>&6 @@ -2400,7 +2275,7 @@ else ac_save_LIBS="$LIBS" LIBS="-ltermcap $LIBS" cat > conftest.$ac_ext <&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 @@ -2430,7 +2305,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then 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) $ac_c" 1>&6 @@ -2438,7 +2313,7 @@ else ac_save_LIBS="$LIBS" LIBS="-lcurses $LIBS" cat > conftest.$ac_ext <&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 @@ -2468,7 +2343,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then 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) $ac_c" 1>&6 @@ -2476,7 +2351,7 @@ else ac_save_LIBS="$LIBS" LIBS="-lncurses $LIBS" cat > conftest.$ac_ext <&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 @@ -2516,7 +2391,7 @@ fi 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 @@ -2553,7 +2428,7 @@ esac # 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}` @@ -2611,7 +2486,7 @@ EOF # 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 \). @@ -2678,7 +2553,7 @@ do 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 ;; @@ -2698,11 +2573,9 @@ sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g; 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@%$LIBS%g @@ -2728,10 +2601,7 @@ s%@host_vendor@%$host_vendor%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 diff --git a/readline/configure.in b/readline/configure.in index 9afdaa70fcf..240a3addc45 100644 --- a/readline/configure.in +++ b/readline/configure.in @@ -13,7 +13,7 @@ AC_CONFIG_HEADER(config.h) 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 @@ -34,44 +34,6 @@ test -z "$CFLAGS" && CFLAGS=-g auto_cflags=1 AC_PROG_CC AC_MINIX -dnl BEGIN changes for CYGNUS cross-building for Cygwin - -dnl load up the cross-building cache file -- add more cases and cache -dnl files as necessary -if test "x$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" diff --git a/readline/display.c b/readline/display.c index 3f6fe71b023..25aba64ca67 100644 --- a/readline/display.c +++ b/readline/display.c @@ -651,12 +651,8 @@ rl_redisplay () 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; } @@ -903,11 +899,7 @@ update_line (old, new, current_line, omax, nmax, inv_botlin) 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; } @@ -1511,11 +1503,7 @@ cr () { 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; } } @@ -1530,16 +1518,8 @@ _rl_redisplay_after_sigwinch () 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); 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GNU History Library

+

Edition 4.0, for History Library Version 4.0.

+

December 1998

+
Brian Fox, Free Software Foundation
+
Chet Ramey, Case Western Reserve University
+

+

+

Table of Contents

+ +

+ +

+This document describes the GNU History library, a programming tool that +provides a consistent user interface for recalling lines of previously +typed input. + +

+

+Published by the Free Software Foundation
+675 Massachusetts Avenue,
+Cambridge, MA 02139 USA + +

+

+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. + +

+

+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. + +

+

+Copyright (C) 1988-1999 Free Software Foundation, Inc. + +

+ + + +

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, +see section Programming with GNU History. + +

+ + + + + +

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. + +

+ + + + + + +

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. + +
+ + + +

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 0th 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 0th. 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. + +

+ + +

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 `&'. + +
+ + + +

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, see section Using History Interactively. + +

+ + + + + +

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. + +

+ + +

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. + +

+ + +

History Functions

+ +

+This section describes the calling sequence for the various functions +present in GNU History. + +

+ + + + + +

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. +
+ +

+ + +

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. +
+ +

+ + +

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. +
+ +

+ + +

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. +
+ +

+ + +

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. +
+ +

+ + +

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. +
+ +

+ + +

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 (see section History Expansion). 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 (see section 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. +
+ +

+ + +

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. +
+ +

+ + +

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");
+            }
+        }
+    }
+}
+
+ + + +

Concept Index

+

+Jump to: +a +- +e +- +h +

+

a

+ +
  • anchored search +
    •  +

    e

    + +
  • event designators +
    •  +

    h

    + +
  • history events +
  • history expansion +
  • History Searching +
    •  + +

    + + +

    Function and Variable Index

    +

    +Jump to: +a +- +c +- +g +- +h +- +m +- +n +- +p +- +r +- +s +- +u +- +w +

    +

    a

    + +
  • add_history +
  • append_history +
    •  +

    c

    + +
  • clear_history +
  • current_history +
    •  +

    g

    + +
  • get_history_event +
    •  +

    h

    + +
  • history_arg_extract +
  • history_base +
  • history_comment_char +
  • history_expand +
  • history_expansion_char +
  • history_get +
  • history_get_history_state +
  • history_inhibit_expansion_function +
  • history_is_stifled +
  • history_length +
  • history_list +
  • history_no_expand_chars +
  • history_quotes_inhibit_expansion +
  • history_search +
  • history_search_delimiter_chars +
  • history_search_pos +
  • history_search_prefix +
  • history_set_history_state +
  • history_set_pos +
  • history_subst_char +
  • history_tokenize +
  • history_total_bytes +
  • history_truncate_file +
    •  +

    m

    + +
  • max_input_history +
    •  +

    n

    + +
  • next_history +
    •  +

    p

    + +
  • previous_history +
    •  +

    r

    + +
  • read_history +
  • read_history_range +
  • remove_history +
  • replace_history_entry +
    •  +

    s

    + +
  • stifle_history +
    •  +

    u

    + +
  • unstifle_history +
  • using_history +
    •  +

    w

    + +
  • where_history +
  • write_history +
    •  + +

    +

    +This document was generated on 31 December 1998 using the +texi2html +translator version 1.52.

    + + diff --git a/readline/doc/history.info b/readline/doc/history.info new file mode 100644 index 00000000000..7a87cbd32ea --- /dev/null +++ b/readline/doc/history.info @@ -0,0 +1,788 @@ +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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 `&'. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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. + + +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"); + } + } + } + } + + +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. + + +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. + + + +Tag Table: +Node: Top1162 +Node: Using History Interactively1742 +Node: History Interaction2250 +Node: Event Designators3669 +Node: Word Designators4596 +Node: Modifiers5845 +Node: Programming with GNU History6983 +Node: Introduction to History7709 +Node: History Storage9030 +Node: History Functions10123 +Node: Initializing History and State Management11094 +Node: History List Management11886 +Node: Information About the History List13407 +Node: Moving Around the History List14713 +Node: Searching the History List15598 +Node: Managing the History File17430 +Node: History Expansion18936 +Node: History Variables20780 +Node: History Programming Example23098 +Node: Concept Index25702 +Node: 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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 diff --git a/readline/doc/hsuser.texinfo b/readline/doc/hsuser.texinfo index 7c4582d2ace..76cb63b1eee 100644 --- a/readline/doc/hsuser.texinfo +++ b/readline/doc/hsuser.texinfo @@ -117,7 +117,7 @@ history list and history file. @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}]} @@ -149,7 +149,7 @@ that typing @samp{r cc} runs the last command beginning with @code{cc} 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}] diff --git a/readline/doc/readline.dvi b/readline/doc/readline.dvi new file mode 100644 index 0000000000000000000000000000000000000000..8335d6a21f269bcbd02ad65e7bfb9471f54aea34 GIT binary patch literal 199980 zc-rK>37i~dnK(R5_aqSl1PJ#XkYvL2kV!Z~07)_=5FjBW6F|9A(_J%Dq%W$vGZ|1| z@c@*JX$smlvk*}>3J5Eph_|fQir}Im0@}k4xQM!cL0MODJ^s)29#!2l8G`QjeZLQX zLef?B9?$!{&wc!%b(itD_E*;Tz^2rN3yXJQ;=vve@ z|AYk}f;V<)nZ!STg?~10`&~=R@W)!;yWqLaAN$KuUwv_NW$(SteC=KT^7N{YwaonT z6)n@@#VP4r@20N#zkb)5tJYPge*2SaTql$D@@{yp*Xuj}&@g_pZThr%H?<^T?g#F8 zWZQ0A@7a7y%fDUs+-vjC`R)3lmR(<4(6TEG)t1irUGwV8GG56mj?V_ ze)!sg=YMtTCjBN%S}JwT8;wsE)-S01bwAhj0~jELuRDjg?cUO|`IcP7Yd^3}G!zU3o-+1^*!a`WSx 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zC6`YfIN`xHu2);+>Vo8F=brDn8Yfo+t1kAmxjx7z(z@d1O~c}9b#x#_F4lkaic4~Y z+7 + + + +GNU Readline Library + + +

    GNU Readline Library

    +

    Edition 4.0, for Readline Library Version 4.0.

    +

    December 1998

    +
    Brian Fox, Free Software Foundation
    +
    Chet Ramey, Case Western Reserve University
    +

    +

    +

    Table of Contents

    + +

    + +

    +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. + +

    +

    +Published by the Free Software Foundation
    +675 Massachusetts Avenue,
    +Cambridge, MA 02139 USA + +

    +

    +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. + +

    +

    +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. + +

    +

    +Copyright (C) 1988-1999 Free Software Foundation, Inc. + +

    + + + +

    Command Line Editing

    + +

    +This chapter describes the basic features of the GNU +command line editing interface. + +

    + + + + + +

    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 +(see section Readline Init File). + +

    + + +

    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. + +

    + + + + + +

    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. +
    + + + +

    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. + +

    + + +

    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. +
    + + + +

    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'. + +

    + + +

    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. + +

    + + +

    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. + +

    + + + + + +

    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 (see section 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 (see section Searching for Commands in the History). +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\\": "\\"
+
    + +
    + + + +

    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
+
    + +
    + + + +

    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
+
    + + + +

    Bindable Readline Commands

    + + + + +

    +This section describes Readline commands that may be bound to key +sequences. + +

    + + +

    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. + +
    + + + +

    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. + +
    + + + +

    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. + +
    + + + +

    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. +
    + + + +

    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. +
    + + + +

    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. + +
    + + + +

    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. + +
    + + + +

    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. + +
    + + + +

    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. + +

    + + + +

    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. + +

    + + + + + +

    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 (see section Custom Completers). + +

    + + +

    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. + +

    + + + + + +

    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. + +

    + + +

    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. + +

    + + +

    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 section 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 +(see section 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 +(see section 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 (see section Redisplay). +
    + +

    +

    +

    +
    Variable: Keymap rl_executing_keymap +
    +This variable is set to the keymap (see section Selecting a Keymap) in which the +currently executing readline function was found. +
    + +

    +

    +

    +
    Variable: Keymap rl_binding_keymap +
    +This variable is set to the keymap (see section Selecting a Keymap) in which the +last key binding occurred. +
    + +

    + + +

    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. + +

    + + +

    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 (see section 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 (see section Readline Init File). +
    + +

    + + +

    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 +(see section Readline Init File). +
    + +

    +

    +

    +
    Function: int rl_read_init_file (char *filename) +
    +Read keybindings and variable assignments from filename +(see section Readline Init File). +
    + +

    + + +

    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. +
    + +

    + + +

    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. +
    + +

    + + +

    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. +
    + +

    + + +

    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. +
    + +

    + + +

    Utility Functions

    + +

    +

    +
    Function: int rl_read_key () +
    +Return the next character available. This handles input inserted into +the input stream via pending input (see section 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 (see section 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. +
    + +

    + + +

    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);
+}
+
    + + + +

    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 (). +
    + +

    + + +

    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. + +

    + + + + + +

    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. +
    + +

    + + +

    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. +
    + +

    + + +

    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. +
    + +

    + + +

    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);
+}
+
    + + + +

    Concept Index

    +

    +Jump to: +c +- +e +- +i +- +k +- +n +- +r +- +y +

    +

    c

    + +
  • command editing +
    •  +

    e

    + +
  • editing command lines +
    •  +

    i

    + +
  • initialization file, readline +
  • interaction, readline +
    •  +

    k

    + +
  • kill ring +
  • killing text +
    •  +

    n

    + +
  • notation, readline +
    •  +

    r

    + +
  • readline, function +
    •  +

    y

    + +
  • yanking text +
    •  + +

    + + +

    Function and Variable Index

    +

    +Jump to: +( +- +a +- +b +- +c +- +d +- +e +- +f +- +h +- +i +- +k +- +l +- +m +- +n +- +o +- +p +- +q +- +r +- +s +- +t +- +u +- +v +- +y +

    +

    (

    + +
  • (int +
    •  +

    a

    + +
  • abort (C-g) +
  • accept-line (Newline, Return) +
  • alphabetic +
    •  +

    b

    + +
  • backward-char (C-b) +
  • backward-delete-char (Rubout) +
  • backward-kill-line (C-x Rubout) +
  • backward-kill-word (M-DEL) +
  • backward-word (M-b) +
  • beginning-of-history (M-&#60;) +
  • beginning-of-line (C-a) +
  • bell-style +
    •  +

    c

    + +
  • call-last-kbd-macro (C-x e) +
  • capitalize-word (M-c) +
  • character-search (C-]) +
  • character-search-backward (M-C-]) +
  • clear-screen (C-l) +
  • comment-begin +
  • complete (TAB) +
  • completion-query-items +
  • completion_matches +
  • convert-meta +
  • copy-backward-word () +
  • copy-forward-word () +
  • copy-region-as-kill () +
    •  +

    d

    + +
  • delete-char (C-d) +
  • delete-char-or-list () +
  • delete-horizontal-space () +
  • digit-argument (M-0, M-1, ... M--) +
  • digit_p +
  • digit_value +
  • ding +
  • disable-completion +
  • do-uppercase-version (M-a, M-b, M-x, ...) +
  • downcase-word (M-l) +
  • dump-functions () +
  • dump-macros () +
  • dump-variables () +
    •  +

    e

    + +
  • editing-mode +
  • enable-keypad +
  • end-kbd-macro (C-x )) +
  • end-of-history (M-&#62;) +
  • end-of-line (C-e) +
  • exchange-point-and-mark (C-x C-x) +
  • expand-tilde +
    •  +

    f

    + +
  • filename_completion_function +
  • forward-backward-delete-char () +
  • forward-char (C-f) +
  • forward-search-history (C-s) +
  • forward-word (M-f) +
  • free_undo_list +
    •  +

    h

    + +
  • history-search-backward () +
  • history-search-forward () +
  • horizontal-scroll-mode +
    •  +

    i

    + +
  • input-meta +
  • insert-comment (M-#) +
  • insert-completions (M-*) +
  • isearch-terminators +
    •  +

    k

    + +
  • keymap +
  • kill-line (C-k) +
  • kill-region () +
  • kill-whole-line () +
  • kill-word (M-d) +
    •  +

    l

    + +
  • lowercase_p +
    •  +

    m

    + +
  • mark-modified-lines +
  • menu-complete () +
  • meta-flag +
    •  +

    n

    + +
  • next-history (C-n) +
  • non-incremental-forward-search-history (M-n) +
  • non-incremental-reverse-search-history (M-p) +
  • numeric +
    •  +

    o

    + +
  • output-meta +
    •  +

    p

    + +
  • possible-completions (M-?) +
  • prefix-meta (ESC) +
  • previous-history (C-p) +
    •  +

    q

    + +
  • quoted-insert (C-q, C-v) +
    •  +

    r

    + +
  • re-read-init-file (C-x C-r) +
  • readline +
  • redraw-current-line () +
  • reverse-search-history (C-r) +
  • revert-line (M-r) +
  • rl_add_defun +
  • rl_add_undo +
  • rl_attempted_completion_function +
  • rl_basic_quote_characters +
  • rl_basic_word_break_characters +
  • rl_begin_undo_group +
  • rl_bind_key +
  • rl_bind_key_in_map +
  • rl_binding_keymap +
  • rl_callback_handler_install +
  • rl_callback_handler_remove +
  • rl_callback_read_char +
  • rl_catch_signals +
  • rl_catch_sigwinch +
  • rl_char_is_quoted_p +
  • rl_cleanup_after_signal +
  • rl_clear_message +
  • rl_clear_signals +
  • rl_complete, rl_complete +
  • rl_complete_internal +
  • rl_completer_quote_characters +
  • rl_completer_word_break_characters +
  • rl_completion_append_character +
  • rl_completion_display_matches_hook +
  • rl_completion_entry_function, rl_completion_entry_function +
  • rl_completion_query_items +
  • rl_copy_keymap +
  • rl_copy_text +
  • rl_delete_text +
  • rl_directory_completion_hook +
  • rl_discard_keymap +
  • rl_display_match_list +
  • rl_do_undo +
  • rl_done +
  • rl_end +
  • rl_end_undo_group +
  • rl_erase_empty_line +
  • rl_event_hook +
  • rl_executing_keymap +
  • rl_filename_completion_desired +
  • rl_filename_dequoting_function +
  • rl_filename_quote_characters +
  • rl_filename_quoting_desired +
  • rl_filename_quoting_function +
  • rl_forced_update_display +
  • rl_free_line_state +
  • rl_function_dumper +
  • rl_function_of_keyseq +
  • rl_generic_bind +
  • rl_get_keymap +
  • rl_get_keymap_by_name +
  • rl_get_keymap_name +
  • rl_getc +
  • rl_getc_function +
  • rl_ignore_completion_duplicates +
  • rl_ignore_some_completions_function +
  • rl_inhibit_completion +
  • rl_initialize +
  • rl_insert_completions +
  • rl_insert_text +
  • rl_instream +
  • rl_invoking_keyseqs +
  • rl_invoking_keyseqs_in_map +
  • rl_kill_text +
  • rl_library_version +
  • rl_line_buffer +
  • rl_list_funmap_names +
  • rl_make_bare_keymap +
  • rl_make_keymap +
  • rl_mark +
  • rl_message +
  • rl_modifying +
  • rl_named_function +
  • rl_on_new_line +
  • rl_outstream +
  • rl_parse_and_bind +
  • rl_pending_input +
  • rl_point +
  • rl_possible_completions +
  • rl_pre_input_hook +
  • rl_prompt +
  • rl_read_init_file +
  • rl_read_key +
  • rl_readline_name +
  • rl_redisplay +
  • rl_redisplay_function +
  • rl_reset_after_signal +
  • rl_reset_line_state +
  • rl_reset_terminal +
  • rl_resize_terminal +
  • rl_restore_prompt +
  • rl_save_prompt +
  • rl_set_keymap +
  • rl_set_signals +
  • rl_special_prefixes +
  • rl_startup_hook +
  • rl_stuff_char +
  • rl_terminal_name +
  • rl_unbind_command_in_map +
  • rl_unbind_function_in_map +
  • rl_unbind_key +
  • rl_unbind_key_in_map +
    •  +

    s

    + +
  • self-insert (a, b, A, 1, !, ...) +
  • set-mark (C-@) +
  • show-all-if-ambiguous +
  • start-kbd-macro (C-x () +
    •  +

    t

    + +
  • tab-insert (M-TAB) +
  • tilde-expand (M-~) +
  • to_lower +
  • to_upper +
  • transpose-chars (C-t) +
  • transpose-words (M-t) +
    •  +

    u

    + +
  • undo (C-_, C-x C-u) +
  • universal-argument () +
  • unix-line-discard (C-u) +
  • unix-word-rubout (C-w) +
  • upcase-word (M-u) +
  • uppercase_p +
  • username_completion_function +
    •  +

    v

    + +
  • visible-stats +
    •  +

    y

    + +
  • yank (C-y) +
  • yank-last-arg (M-., M-_) +
  • yank-nth-arg (M-C-y) +
  • yank-pop (M-y) +
    •  + +

    +

    +This document was generated on 31 December 1998 using the +texi2html +translator version 1.52.

    + + diff --git a/readline/doc/readline.info b/readline/doc/readline.info new file mode 100644 index 00000000000..1aa2848be1c --- /dev/null +++ b/readline/doc/readline.info @@ -0,0 +1,3039 @@ +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. + + +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. + + +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. + + +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 is read as `Control-K' and describes the character +produced when the key is pressed while the Control key is depressed. + + The text is read as `Meta-K' and describes the character +produced when the meta key (if you have one) is depressed, and the +key is pressed. If you do not have a meta key, the identical keystroke +can be generated by typing first, and then typing . Either +process is known as "metafying" the key. + + The text is read as `Meta-Control-k' and describes the +character produced by "metafying" . + + In addition, several keys have their own names. Specifically, +, , , , , and all stand for themselves +when seen in this text, or in an init file (*note Readline Init +File::.). + + +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 . You do not have to be at the end +of the line to press ; 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. + + +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 to move the cursor to the +left, and then correct your mistake. Afterwards, you can move the +cursor to the right with . + + 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. + + + Move back one character. + + + Move forward one character. + + + Delete the character to the left of the cursor. + + + Delete the character underneath the cursor. + +Printing characters + Insert the character into the line at the cursor. + + + Undo the last editing command. You can undo all the way back to an + empty line. + + +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 , +, , and . Here are some commands for moving more rapidly +about the line. + + + Move to the start of the line. + + + Move to the end of the line. + + + Move forward a word, where a word is composed of letters and + digits. + + + Move backward a word. + + + Clear the screen, reprinting the current line at the top. + + Notice how moves forward a character, while moves +forward a word. It is a loose convention that control keystrokes +operate on characters while meta keystrokes operate on words. + + +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. + + + Kill the text from the current cursor position to the end of the + line. + + + Kill from the cursor to the end of the current word, or if between + words, to the end of the next word. + + + Kill from the cursor the start of the previous word, or if between + words, to the start of the previous word. + + + Kill from the cursor to the previous whitespace. This is + different than 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. + + + Yank the most recently killed text back into the buffer at the + cursor. + + + Rotate the kill-ring, and yank the new top. You can only do this + if the prior command is or . + + +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 command an argument of 10, you could type `M-1 0 C-d'. + + +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 and characters will terminate an incremental search. + 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 or 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 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. + + +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. + + +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 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 and 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, is bound to the function + `universal-argument', and 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, is bound to the function + `universal-argument' (just as it was in the first example), + ` ' is bound to the function `re-read-init-file', + and ` <[> <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\\": "\\" + + +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 + + +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 + + +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. + + +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. + + +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. + + +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 , 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. + + +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. + + +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. 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. + + +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. + + +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. + + +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. + + +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 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. + + +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. + + +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 + 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 +completion: completion on file names. If you do not want Readline to +complete on filenames, you can change the binding of the 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 to `rl_insert ()' makes 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 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::.). + + +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. + + +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. + + +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. + + +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. + + +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. + + +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 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. + + +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::.). + + +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::.). + + +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'. + + +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. + + +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'. + + +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. + + +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. + + +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); + } + + +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 ()'. + + +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. + + +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. + + +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. + + +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 + #include + #include + #include + #include + + #include + #include + + 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); + } + + +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. + + +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. + + + +Tag Table: +Node: Top1190 +Node: Command Line Editing1789 +Node: Introduction and Notation2440 +Node: Readline Interaction3479 +Node: Readline Bare Essentials4672 +Node: Readline Movement Commands6213 +Node: Readline Killing Commands7179 +Node: Readline Arguments8895 +Node: Searching9870 +Node: Readline Init File11583 +Node: Readline Init File Syntax12630 +Node: Conditional Init Constructs21837 +Node: Sample Init File24276 +Node: Bindable Readline Commands27446 +Node: Commands For Moving28197 +Node: Commands For History29045 +Node: Commands For Text31797 +Node: Commands For Killing33816 +Node: Numeric Arguments35966 +Node: Commands For Completion37093 +Node: Keyboard Macros38841 +Node: Miscellaneous Commands39400 +Node: Readline vi Mode42204 +Node: Programming with GNU Readline43974 +Node: Basic Behavior44942 +Node: Custom Functions48268 +Node: The Function Type48869 +Node: Function Writing49714 +Node: Readline Variables50798 +Node: Readline Convenience Functions54407 +Node: Function Naming55145 +Node: Keymaps56373 +Node: Binding Keys58087 +Node: Associating Function Names and 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+Fg(\))195 2606 y Fu(T)l(ell)i(Readline)i(to)c(sa)o(v)o(e)g(the)i(text)e +(b)q(et)o(w)o(een)h Fm(start)g Fu(and)g Fm(end)j Fu(as)c(a)h(single)h +(undo)g(unit.)23 b(It)195 2661 y(is)16 b(assumed)f(that)g(y)o(ou)f +(will)j(subsequen)o(tly)g(mo)q(dify)e(that)g(text.)p +eop +%%Page: 27 29 +27 28 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g +(Readline)844 b(27)75 183 y Fl(2.4.6)30 b(Redispla)n(y)1650 +300 y Fu(F)l(unction)-1749 b Fi(void)20 b Fh(rl)p 241 +300 18 3 v 21 w(redispla)n(y)k Fg(\(\))195 355 y Fu(Change)19 +b(what's)f(displa)o(y)o(ed)i(on)f(the)f(screen)i(to)e(re\015ect)h(the)g +(curren)o(t)g(con)o(ten)o(ts)f(of)g Ft(rl_)195 410 y(line_buffer)p +Fu(.)1650 497 y(F)l(unction)-1749 b Fi(int)20 b Fh(rl)p +215 497 V 21 w(forced)p 390 497 V 20 w(up)r(date)p 584 +497 V 20 w(displa)n(y)k Fg(\(\))195 552 y Fu(F)l(orce)17 +b(the)f(line)j(to)d(b)q(e)i(up)q(dated)f(and)g(redispla)o(y)o(ed,)h +(whether)f(or)g(not)f(Readline)j(thinks)195 607 y(the)c(screen)h +(displa)o(y)g(is)g(correct.)1650 694 y(F)l(unction)-1749 +b Fi(int)20 b Fh(rl)p 215 694 V 21 w(on)p 297 694 V 20 +w(new)p 416 694 V 21 w(line)k Fg(\(\))195 749 y Fu(T)l(ell)17 +b(the)f(up)q(date)g(routines)g(that)f(w)o(e)g(ha)o(v)o(e)g(mo)o(v)o(ed) +g(on)o(to)g(a)g(new)h(\(empt)o(y\))f(line,)i(usually)195 +804 y(after)d(ouputting)i(a)f(newline.)1650 892 y(F)l(unction)-1749 +b Fi(int)20 b Fh(rl)p 215 892 V 21 w(reset)p 357 892 +V 20 w(line)p 465 892 V 23 w(state)j Fg(\(\))195 947 +y Fu(Reset)17 b(the)f(displa)o(y)h(state)f(to)f(a)h(clean)h(state)f +(and)g(redispla)o(y)h(the)g(curren)o(t)f(line)i(starting)195 +1001 y(on)d(a)g(new)g(line.)1650 1089 y(F)l(unction)-1749 +b Fi(int)20 b Fh(rl)p 215 1089 V 21 w(message)g Fg(\()p +Ft(va_alist)p Fg(\))195 1144 y Fu(The)h(argumen)o(ts)f(are)g(a)g +(string)h(as)f(w)o(ould)h(b)q(e)g(supplied)i(to)d Ft(printf)p +Fu(.)35 b(The)21 b(resulting)195 1199 y(string)h(is)g(displa)o(y)o(ed)h +(in)g(the)f Fm(ec)o(ho)g(area)p Fu(.)39 b(The)23 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y Fd(rl)p 1054 482 V 14 w(display)p +1208 482 V 11 w(match)p 1319 482 V 12 w(list)6 b Fe(.)f(.)h(.)g(.)g(.)g +(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.) +h(.)19 b Ff(28)1012 532 y Fd(rl)p 1054 532 V 14 w(do)p +1108 532 V 13 w(undo)9 b Fe(.)c(.)h(.)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(.)h(.)f(.)g(.)g(.)g(.)22 b Ff(26)1012 582 y Fd(rl)p +1054 582 V 14 w(done)15 b Fe(.)6 b(.)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(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)17 b Ff(21)1012 +632 y Fd(rl)p 1054 632 V 14 w(end)f Fe(.)6 b(.)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(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)18 +b Ff(21)1012 681 y Fd(rl)p 1054 681 V 14 w(end)p 1128 +681 V 13 w(undo)p 1221 681 V 12 w(group)10 b Fe(.)c(.)g(.)g(.)g(.)g(.)g 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2624 V 14 w(outstream)15 b Fe(.)6 b(.)g(.)g(.)g(.)g(.)g +(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.) +g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)19 b Ff(22)p eop +%%Page: 51 53 +51 52 bop 75 -58 a Fu(F)l(unction)16 b(and)f(V)l(ariable)i(Index)1187 +b(51)75 183 y Fd(rl)p 117 183 12 2 v 13 w(parse)p 230 +183 V 13 w(and)p 303 183 V 13 w(bind)9 b Fe(.)d(.)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(.)24 b Ff(25)75 233 y Fd(rl)p 117 233 V 13 +w(pending)p 270 233 V 12 w(input)14 b Fe(.)6 b(.)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(.)g(.)g(.)16 b Ff(21)75 283 y Fd(rl)p 117 283 V +13 w(point)22 b Fe(.)6 b(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)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(.)24 b Ff(21)75 333 y Fd(rl)p +117 333 V 13 w(possible)p 290 333 V 11 w(completions)6 +b 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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 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 . + % + \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 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 to achieve this: TeX expands \the only once, +% simply yielding the contents of the . +\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 + \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 `\=\other +\catcode `\=\other +\catcode `\^^C=\other +\catcode `\^^D=\other +\catcode `\^^E=\other +\catcode `\^^F=\other +\catcode `\^^G=\other +\catcode `\^^H=\other +\catcode `\ =\other +\catcode `\^^L=\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 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: diff --git a/readline/rltty.c b/readline/rltty.c index 2c7e88679cb..a5ef938b5c0 100644 --- a/readline/rltty.c +++ b/readline/rltty.c @@ -189,9 +189,7 @@ get_tty_settings (tty, tiop) int tty; TIOTYPE *tiop; { -#if defined (TIOCGWINSZ) set_winsize (tty); -#endif tiop->flags = tiop->lflag = 0; @@ -390,9 +388,7 @@ get_tty_settings (tty, tiop) { int ioctl_ret; -#if defined (TIOCGWINSZ) set_winsize (tty); -#endif while (1) { diff --git a/readline/shell.c b/readline/shell.c index f0ddc897fe4..091ec08f645 100644 --- a/readline/shell.c +++ b/readline/shell.c @@ -27,7 +27,6 @@ #endif #include -#include #if defined (HAVE_UNISTD_H) # include diff --git a/readline/terminal.c b/readline/terminal.c index a1fcc25400e..c22ec5170bd 100644 --- a/readline/terminal.c +++ b/readline/terminal.c @@ -186,10 +186,8 @@ _rl_get_screen_size (tty, ignore_env) 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 @@ -199,10 +197,8 @@ _rl_get_screen_size (tty, 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. */ @@ -291,12 +287,10 @@ static void 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; } @@ -546,20 +540,16 @@ ding () 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 } -- 2.47.3