doc/bashref.texi
- --enable_function-import: document new configuration option
+
+ 11/5
+ ----
+lib/readline/history.c
+ - history_lines_read_from_file: new variable, set by read_history and
+ read_history_range to the actual number of lines read from the
+ history file. The value is valid immediately after a call to one
+ of those functions
+ - history_lines_written_to_file: new variable, set by write_history,
+ history_do_write, and history_truncate_file to the actual number of
+ lines written to the history file. The value is valid immediately
+ after a call to one of those functions
+
+variables.c
+ - sv_histsize: set history_lines_in_file after history_truncate_file()
+ only if hmax < history_lines_in_file (lines we've already read); a
+ cosmetic change only
+
+bashhist.c
+ - load_history: set history_lines_in_file after read_history() from
+ history_lines_read_from_file, since read_history reads all of the
+ lines from the history file even if it's more than $HISTSIZE
+ - maybe_save_shell_history: after calling write_history(), set
+ history_lines_in_file to history_lines_written_to_file, since we
+ can assume that we read everyhing we just wrote
+
+builtins/history.def
+ - history_builtin: after calling read_history (history -r), set the
+ new value of history_lines_in_file, for the same reason as above
+ - history_builtin: after calling read_history_range (history -n), set
+ history_lines_in_file from history_lines_read_from_file
+
+ 11/6
+ ----
+lib/readline/histfile.c
+ - history_truncate_file: since we move the old file to a backup copy
+ before truncating, make sure the new file is owned by the same uid
+ as the old
+ - history_do_write: use chown in the same way as history_truncate_file
+
--- /dev/null
+Starting bash with the `--posix' command-line option or executing
+`set -o posix' while bash is running will cause bash to conform more
+closely to the Posix.2 standard by changing the behavior to match that
+specified by Posix.2 in areas where the bash default differs.
+
+The following list is what's changed when `posix mode' is in effect:
+
+1. When a command in the hash table no longer exists, bash will re-search
+ $PATH to find the new location. This is also available with
+ `shopt -s checkhash'.
+
+2. The >& redirection does not redirect stdout and stderr.
+
+3. The message printed by the job control code and builtins when a job
+ exits with a non-zero status is `Done(status)'.
+
+4. Reserved words may not be aliased.
+
+5. The Posix.2 PS1 and PS2 expansions of `!' -> history number and
+ `!!' -> `!' are enabled, and parameter expansion is performed on
+ the value regardless of the setting of the `promptvars' option.
+
+6. Interactive comments are enabled by default. (Note that bash has
+ them on by default anyway.)
+
+7. The Posix.2 startup files are executed ($ENV) rather than the normal
+ bash files.
+
+8. Tilde expansion is only performed on assignments preceding a command
+ name, rather than on all assignment statements on the line.
+
+9. The default history file is ~/.sh_history (default value of $HISTFILE).
+
+10. The output of `kill -l' prints all the signal names on a single line,
+ separated by spaces.
+
+11. Non-interactive shells exit if `file' in `. file' is not found.
+
+12. Redirection operators do not perform pathname expansion on the word
+ in the redirection unless the shell is interactive
+
+13. Function names must be valid shell identifiers. That is, they may not
+ contain characters other than letters, digits, and underscores, and
+ may not start with a digit. Declaring a function with an illegal name
+ causes a fatal syntax error in non-interactive shells.
+
+14. Posix.2 `special' builtins are found before shell functions during command
+ lookup.
+
+15. If a Posix.2 special builtin returns an error status, a non-interactive
+ shell exits. The fatal errors are those listed in the POSIX.2 standard,
+ and include things like passing incorrect options, redirection errors,
+ variable assignment errors for assignments preceding the command name,
+ and so on.
+
+16. The environment passed to executed commands is not sorted. Neither is
+ the output of `set'. This is not strictly Posix.2 behavior, but sh
+ does it this way. Ksh does not. It's not necessary to sort the
+ environment; no program should rely on it being sorted.
+
+17. If the `cd' builtin finds a directory to change to using $CDPATH, the
+ value it assigns to $PWD does not contain any symbolic links, as if
+ `cd -P' had been executed.
+
+18. A non-interactive shell exits with an error status if a variable
+ assignment error occurs when no command name follows the assignment
+ statements. A variable assignment error occurs, for example, when
+ trying to assign a value to a read-only variable.
+
+19. A non-interactive shell exits with an error status if the iteration
+ variable in a for statement or the selection variable in a select
+ statement is a read-only variable.
+
+20. Process substitution is not available.
+
+21. Assignment statements preceding POSIX.2 `special' builtins persist in
+ the shell environment after the builtin completes.
+
+There is other Posix.2 behavior that bash does not implement. Specifically:
+
+1. Assignment statements affect the execution environment of all builtins,
+ not just special ones.
--- /dev/null
+This file is set.def, from which is created set.c.
+It implements the "set" and "unset" builtins in Bash.
+
+Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
+
+This file is part of GNU Bash, the Bourne Again SHell.
+
+Bash is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 1, or (at your option) any later
+version.
+
+Bash is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with Bash; see the file COPYING. If not, write to the Free Software
+Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+$PRODUCES set.c
+
+#include <stdio.h>
+#include "../shell.h"
+#include "../flags.h"
+
+#include "bashgetopt.h"
+
+extern int interactive;
+extern int noclobber, posixly_correct;
+#if defined (READLINE)
+extern int rl_editing_mode, no_line_editing;
+#endif /* READLINE */
+
+$BUILTIN set
+$FUNCTION set_builtin
+$SHORT_DOC set [--abefhkmnptuvxldBCHP] [-o option] [arg ...]
+ -a Mark variables which are modified or created for export.
+ -b Notify of job termination immediately.
+ -e Exit immediately if a command exits with a non-zero status.
+ -f Disable file name generation (globbing).
+ -h Locate and remember function commands as functions are
+ defined. Function commands are normally looked up when
+ the function is executed.
+ -i Force the shell to be an "interactive" one. Interactive shells
+ always read `~/.bashrc' on startup.
+ -k All keyword arguments are placed in the environment for a
+ command, not just those that precede the command name.
+ -m Job control is enabled.
+ -n Read commands but do not execute them.
+ -o option-name
+ Set the variable corresponding to option-name:
+ allexport same as -a
+ braceexpand same as -B
+#if defined (READLINE)
+ emacs use an emacs-style line editing interface
+#endif /* READLINE */
+ errexit same as -e
+ histexpand same as -H
+ ignoreeof the shell will not exit upon reading EOF
+ interactive-comments
+ allow comments to appear in interactive commands
+ monitor same as -m
+ noclobber disallow redirection to existing files
+ noexec same as -n
+ noglob same as -f
+ nohash same as -d
+ notify save as -b
+ nounset same as -u
+ physical same as -P
+ posix change the behavior of bash where the default
+ operation differs from the 1003.2 standard to
+ match the standard
+ privileged same as -p
+ verbose same as -v
+#if defined (READLINE)
+ vi use a vi-style line editing interface
+#endif /* READLINE */
+ xtrace same as -x
+ -p Turned on whenever the real and effective user ids do not match.
+ Disables processing of the $ENV file and importing of shell
+ functions. Turning this option off causes the effective uid and
+ gid to be set to the real uid and gid.
+ -t Exit after reading and executing one command.
+ -u Treat unset variables as an error when substituting.
+ -v Print shell input lines as they are read.
+ -x Print commands and their arguments as they are executed.
+ -l Save and restore the binding of the NAME in a FOR command.
+ -d Disable the hashing of commands that are looked up for execution.
+ Normally, commands are remembered in a hash table, and once
+ found, do not have to be looked up again.
+#if defined (BRACE_EXPANSION)
+ -B the shell will perform brace expansion
+#endif /* BRACE_EXPANSION */
+#if defined (BANG_HISTORY)
+ -H Enable ! style history substitution. This flag is on
+ by default.
+#endif /* BANG_HISTORY */
+ -C If set, disallow existing regular files to be overwritten
+ by redirection of output.
+ -P If set, do not follow symbolic links when executing commands
+ such as cd which change the current directory.
+
+Using + rather than - causes these flags to be turned off. The
+flags can also be used upon invocation of the shell. The current
+set of flags may be found in $-. The remaining n ARGs are positional
+parameters and are assigned, in order, to $1, $2, .. $n. If no
+ARGs are given, all shell variables are printed.
+$END
+
+/* An a-list used to match long options for set -o to the corresponding
+ option letter. */
+struct {
+ char *name;
+ int letter;
+} o_options[] = {
+ { "allexport", 'a' },
+#if defined (BRACE_EXPANSION)
+ { "braceexpand",'B' },
+#endif
+ { "errexit", 'e' },
+ { "histexpand", 'H' },
+ { "monitor", 'm' },
+ { "noexec", 'n' },
+ { "noglob", 'f' },
+ { "nohash", 'd' },
+#if defined (JOB_CONTROL)
+ { "notify", 'b' },
+#endif /* JOB_CONTROL */
+ {"nounset", 'u' },
+ {"physical", 'P' },
+ {"privileged", 'p' },
+ {"verbose", 'v' },
+ {"xtrace", 'x' },
+ {(char *)NULL, 0},
+};
+
+#define MINUS_O_FORMAT "%-15s\t%s\n"
+
+void
+list_minus_o_opts ()
+{
+ register int i;
+ char *on = "on", *off = "off";
+
+ printf (MINUS_O_FORMAT, "noclobber", (noclobber == 1) ? on : off);
+
+ if (find_variable ("ignoreeof") || find_variable ("IGNOREEOF"))
+ printf (MINUS_O_FORMAT, "ignoreeof", on);
+ else
+ printf (MINUS_O_FORMAT, "ignoreeof", off);
+
+ printf (MINUS_O_FORMAT, "interactive-comments",
+ interactive_comments ? on : off);
+
+ printf (MINUS_O_FORMAT, "posix", posixly_correct ? on : off);
+
+#if defined (READLINE)
+ if (no_line_editing)
+ {
+ printf (MINUS_O_FORMAT, "emacs", off);
+ printf (MINUS_O_FORMAT, "vi", off);
+ }
+ else
+ {
+ /* Magic. This code `knows' how readline handles rl_editing_mode. */
+ printf (MINUS_O_FORMAT, "emacs", (rl_editing_mode == 1) ? on : off);
+ printf (MINUS_O_FORMAT, "vi", (rl_editing_mode == 0) ? on : off);
+ }
+#endif /* READLINE */
+
+ for (i = 0; o_options[i].name; i++)
+ {
+ int *on_or_off, zero = 0;
+
+ on_or_off = find_flag (o_options[i].letter);
+ if (on_or_off == FLAG_UNKNOWN)
+ on_or_off = &zero;
+ printf (MINUS_O_FORMAT, o_options[i].name, (*on_or_off == 1) ? on : off);
+ }
+}
+
+set_minus_o_option (on_or_off, option_name)
+ int on_or_off;
+ char *option_name;
+{
+ int option_char = -1;
+
+ if (STREQ (option_name, "noclobber"))
+ {
+ if (on_or_off == FLAG_ON)
+ bind_variable ("noclobber", "");
+ else
+ unbind_variable ("noclobber");
+ stupidly_hack_special_variables ("noclobber");
+ }
+ else if (STREQ (option_name, "ignoreeof"))
+ {
+ unbind_variable ("ignoreeof");
+ unbind_variable ("IGNOREEOF");
+ if (on_or_off == FLAG_ON)
+ bind_variable ("IGNOREEOF", "10");
+ stupidly_hack_special_variables ("IGNOREEOF");
+ }
+
+#if defined (READLINE)
+ else if ((STREQ (option_name, "emacs")) || (STREQ (option_name, "vi")))
+ {
+ if (on_or_off == FLAG_ON)
+ {
+ rl_variable_bind ("editing-mode", option_name);
+
+ if (interactive)
+ with_input_from_stdin ();
+ no_line_editing = 0;
+ }
+ else
+ {
+ int isemacs = (rl_editing_mode == 1);
+ if ((isemacs && STREQ (option_name, "emacs")) ||
+ (!isemacs && STREQ (option_name, "vi")))
+ {
+ if (interactive)
+ with_input_from_stream (stdin, "stdin");
+ no_line_editing = 1;
+ }
+ else
+ builtin_error ("not in %s editing mode", option_name);
+ }
+ }
+#endif /* READLINE */
+ else if (STREQ (option_name, "interactive-comments"))
+ interactive_comments = (on_or_off == FLAG_ON);
+ else if (STREQ (option_name, "posix"))
+ {
+ posixly_correct = (on_or_off == FLAG_ON);
+ unbind_variable ("POSIXLY_CORRECT");
+ unbind_variable ("POSIX_PEDANTIC");
+ if (on_or_off == FLAG_ON)
+ {
+ bind_variable ("POSIXLY_CORRECT", "");
+ stupidly_hack_special_variables ("POSIXLY_CORRECT");
+ }
+ }
+ else
+ {
+ register int i;
+ for (i = 0; o_options[i].name; i++)
+ {
+ if (STREQ (option_name, o_options[i].name))
+ {
+ option_char = o_options[i].letter;
+ break;
+ }
+ }
+ if (option_char == -1)
+ {
+ builtin_error ("%s: unknown option name", option_name);
+ return (EXECUTION_FAILURE);
+ }
+ if (change_flag (option_char, on_or_off) == FLAG_ERROR)
+ {
+ bad_option (option_name);
+ return (EXECUTION_FAILURE);
+ }
+ }
+ return (EXECUTION_SUCCESS);
+}
+
+/* Set some flags from the word values in the input list. If LIST is empty,
+ then print out the values of the variables instead. If LIST contains
+ non-flags, then set $1 - $9 to the successive words of LIST. */
+set_builtin (list)
+ WORD_LIST *list;
+{
+ int on_or_off, flag_name, force_assignment = 0;
+
+ if (!list)
+ {
+ SHELL_VAR **vars;
+
+ vars = all_shell_variables ();
+ if (vars)
+ {
+ print_var_list (vars);
+ free (vars);
+ }
+
+ vars = all_shell_functions ();
+ if (vars)
+ {
+ print_var_list (vars);
+ free (vars);
+ }
+
+ return (EXECUTION_SUCCESS);
+ }
+
+ /* Check validity of flag arguments. */
+ if (*list->word->word == '-' || *list->word->word == '+')
+ {
+ register char *arg;
+ WORD_LIST *save_list = list;
+
+ while (list && (arg = list->word->word))
+ {
+ char c;
+
+ if (arg[0] != '-' && arg[0] != '+')
+ break;
+
+ /* `-' or `--' signifies end of flag arguments. */
+ if (arg[0] == '-' &&
+ (!arg[1] || (arg[1] == '-' && !arg[2])))
+ break;
+
+ while (c = *++arg)
+ {
+ if (find_flag (c) == FLAG_UNKNOWN && c != 'o')
+ {
+ char s[2];
+ s[0] = c; s[1] = '\0';
+ bad_option (s);
+ if (c == '?')
+ builtin_usage ();
+ return (c == '?' ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
+ }
+ }
+ list = list->next;
+ }
+ list = save_list;
+ }
+
+ /* Do the set command. While the list consists of words starting with
+ '-' or '+' treat them as flags, otherwise, start assigning them to
+ $1 ... $n. */
+ while (list)
+ {
+ char *string = list->word->word;
+
+ /* If the argument is `--' or `-' then signal the end of the list
+ and remember the remaining arguments. */
+ if (string[0] == '-' && (!string[1] || (string[1] == '-' && !string[2])))
+ {
+ list = list->next;
+
+ /* `set --' unsets the positional parameters. */
+ if (string[1] == '-')
+ force_assignment = 1;
+
+ /* Until told differently, the old shell behaviour of
+ `set - [arg ...]' being equivalent to `set +xv [arg ...]'
+ stands. Posix.2 says the behaviour is marked as obsolescent. */
+ else
+ {
+ change_flag ('x', '+');
+ change_flag ('v', '+');
+ }
+
+ break;
+ }
+
+ if ((on_or_off = *string) &&
+ (on_or_off == '-' || on_or_off == '+'))
+ {
+ int i = 1;
+ while (flag_name = string[i++])
+ {
+ if (flag_name == '?')
+ {
+ builtin_usage ();
+ return (EXECUTION_SUCCESS);
+ }
+ else if (flag_name == 'o') /* -+o option-name */
+ {
+ char *option_name;
+ WORD_LIST *opt;
+
+ opt = list->next;
+
+ if (!opt)
+ {
+ list_minus_o_opts ();
+ continue;
+ }
+
+ option_name = opt->word->word;
+
+ if (!option_name || !*option_name || (*option_name == '-'))
+ {
+ list_minus_o_opts ();
+ continue;
+ }
+ list = list->next; /* Skip over option name. */
+
+ if (set_minus_o_option (on_or_off, option_name) != EXECUTION_SUCCESS)
+ return (EXECUTION_FAILURE);
+ }
+ else
+ {
+ if (change_flag (flag_name, on_or_off) == FLAG_ERROR)
+ {
+ char opt[3];
+ opt[0] = on_or_off;
+ opt[1] = flag_name;
+ opt[2] = '\0';
+ bad_option (opt);
+ builtin_usage ();
+ return (EXECUTION_FAILURE);
+ }
+ }
+ }
+ }
+ else
+ {
+ break;
+ }
+ list = list->next;
+ }
+
+ /* Assigning $1 ... $n */
+ if (list || force_assignment)
+ remember_args (list, 1);
+ return (EXECUTION_SUCCESS);
+}
+
+$BUILTIN unset
+$FUNCTION unset_builtin
+$SHORT_DOC unset [-f] [-v] [name ...]
+For each NAME, remove the corresponding variable or function. Given
+the `-v', unset will only act on variables. Given the `-f' flag,
+unset will only act on functions. With neither flag, unset first
+tries to unset a variable, and if that fails, then tries to unset a
+function. Some variables (such as PATH and IFS) cannot be unset; also
+see readonly.
+$END
+
+#define NEXT_VARIABLE() any_failed++; list = list->next; continue;
+
+unset_builtin (list)
+ WORD_LIST *list;
+{
+ int unset_function, unset_variable, unset_array, opt, any_failed;
+ char *name;
+
+ unset_function = unset_variable = unset_array = any_failed = 0;
+
+ reset_internal_getopt ();
+ while ((opt = internal_getopt (list, "fv")) != -1)
+ {
+ switch (opt)
+ {
+ case 'f':
+ unset_function = 1;
+ break;
+ case 'v':
+ unset_variable = 1;
+ break;
+ default:
+ builtin_usage ();
+ return (EXECUTION_FAILURE);
+ }
+ }
+
+ list = loptend;
+
+ if (unset_function && unset_variable)
+ {
+ builtin_error ("cannot simultaneously unset a function and a variable");
+ return (EXECUTION_FAILURE);
+ }
+
+ while (list)
+ {
+ SHELL_VAR *var;
+ int tem;
+#if defined (ARRAY_VARS)
+ char *t;
+#endif
+
+ name = list->word->word;
+
+#if defined (ARRAY_VARS)
+ if (!unset_function && valid_array_reference (name))
+ {
+ t = strchr (name, '[');
+ *t++ = '\0';
+ unset_array++;
+ }
+#endif
+
+ var = unset_function ? find_function (name) : find_variable (name);
+
+ if (var && !unset_function && non_unsettable_p (var))
+ {
+ builtin_error ("%s: cannot unset", name);
+ NEXT_VARIABLE ();
+ }
+
+ /* Posix.2 says that unsetting readonly variables is an error. */
+ if (var && readonly_p (var))
+ {
+ builtin_error ("%s: cannot unset: readonly %s",
+ name, unset_function ? "function" : "variable");
+ NEXT_VARIABLE ();
+ }
+
+ /* Unless the -f option is supplied, the name refers to a variable. */
+#if defined (ARRAY_VARS)
+ if (var && unset_array)
+ {
+ if (array_p (var) == 0)
+ {
+ builtin_error ("%s: not an array variable", name);
+ NEXT_VARIABLE ();
+ }
+ else
+ tem = unbind_array_element (var, t);
+ }
+ else
+#endif /* ARRAY_VARS */
+ tem = makunbound (name, unset_function ? shell_functions : shell_variables);
+
+ /* This is what Posix.2 draft 11+ says. ``If neither -f nor -v
+ is specified, the name refers to a variable; if a variable by
+ that name does not exist, a function by that name, if any,
+ shall be unset.'' */
+ if ((tem == -1) && !unset_function && !unset_variable)
+ tem = makunbound (name, shell_functions);
+
+ if (tem == -1)
+ any_failed++;
+ else if (!unset_function)
+ stupidly_hack_special_variables (name);
+
+ list = list->next;
+ }
+
+ if (any_failed)
+ return (EXECUTION_FAILURE);
+ else
+ return (EXECUTION_SUCCESS);
+}
--- /dev/null
+/* unwind_prot.h - Macros and functions for hacking unwind protection. */
+
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 2, or (at your option) any later
+ version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with Bash; see the file COPYING. If not, write to the Free Software
+ Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_UNWIND_PROT_H)
+#define _UNWIND_PROT_H
+
+/* Run a function without interrupts. */
+extern void begin_unwind_frame ();
+extern void discard_unwind_frame ();
+extern void run_unwind_frame ();
+extern void add_unwind_protect ();
+extern void remove_unwind_protect ();
+extern void run_unwind_protects ();
+extern void unwind_protect_var ();
+
+/* Define for people who like their code to look a certain way. */
+#define end_unwind_frame()
+
+/* How to protect an integer. */
+#define unwind_protect_int(X) unwind_protect_var (&(X), (char *)(X), sizeof (int))
+
+/* How to protect a pointer to a string. */
+#define unwind_protect_string(X) \
+ unwind_protect_var ((int *)&(X), (X), sizeof (char *))
+
+/* How to protect any old pointer. */
+#define unwind_protect_pointer(X) unwind_protect_string (X)
+
+/* How to protect the contents of a jmp_buf. */
+#define unwind_protect_jmp_buf(X) \
+ unwind_protect_var ((int *)(X), (char *)(X), sizeof (procenv_t))
+
+#endif /* _UNWIND_PROT_H */
@%:@! /bin/sh
-@%:@ From configure.ac for Bash 4.3, version 4.064.
+@%:@ From configure.ac for Bash 4.3, version 4.065.
@%:@ Guess values for system-dependent variables and create Makefiles.
@%:@ Generated by GNU Autoconf 2.69 for bash 4.3-maint.
@%:@
_ACEOF
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
+$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
+if ${ac_cv_type_uid_t+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/types.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "uid_t" >/dev/null 2>&1; then :
+ ac_cv_type_uid_t=yes
+else
+ ac_cv_type_uid_t=no
+fi
+rm -f conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
+$as_echo "$ac_cv_type_uid_t" >&6; }
+if test $ac_cv_type_uid_t = no; then
+
+$as_echo "@%:@define uid_t int" >>confdefs.h
+
+
+$as_echo "@%:@define gid_t int" >>confdefs.h
+
+fi
+
+for ac_header in unistd.h
+do :
+ ac_fn_c_check_header_mongrel "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"
+if test "x$ac_cv_header_unistd_h" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+@%:@define HAVE_UNISTD_H 1
+_ACEOF
+
+fi
+
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working chown" >&5
+$as_echo_n "checking for working chown... " >&6; }
+if ${ac_cv_func_chown_works+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ ac_cv_func_chown_works=no
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$ac_includes_default
+#include <fcntl.h>
+
+int
+main ()
+{
+ char *f = "conftest.chown";
+ struct stat before, after;
+
+ if (creat (f, 0600) < 0)
+ return 1;
+ if (stat (f, &before) < 0)
+ return 1;
+ if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
+ return 1;
+ if (stat (f, &after) < 0)
+ return 1;
+ return ! (before.st_uid == after.st_uid && before.st_gid == after.st_gid);
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+ ac_cv_func_chown_works=yes
+else
+ ac_cv_func_chown_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+rm -f conftest.chown
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_chown_works" >&5
+$as_echo "$ac_cv_func_chown_works" >&6; }
+if test $ac_cv_func_chown_works = yes; then
+
+$as_echo "@%:@define HAVE_CHOWN 1" >>confdefs.h
+
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether getpgrp requires zero arguments" >&5
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
-$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
-if ${ac_cv_type_uid_t+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <sys/types.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
- $EGREP "uid_t" >/dev/null 2>&1; then :
- ac_cv_type_uid_t=yes
-else
- ac_cv_type_uid_t=no
-fi
-rm -f conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
-$as_echo "$ac_cv_type_uid_t" >&6; }
-if test $ac_cv_type_uid_t = no; then
-
-$as_echo "@%:@define uid_t int" >>confdefs.h
-
-
-$as_echo "@%:@define gid_t int" >>confdefs.h
-
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking type of array argument to getgroups" >&5
$as_echo_n "checking type of array argument to getgroups... " >&6; }
if ${ac_cv_type_getgroups+:} false; then :
@%:@undef STACK_DIRECTION])
m4trace:configure.ac:728: -1- AC_DEFINE_TRACE_LITERAL([STACK_DIRECTION])
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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-m4trace:configure.ac:1179: -1- AC_SUBST([PROFILE_FLAGS])
-m4trace:configure.ac:1179: -1- AC_SUBST_TRACE([PROFILE_FLAGS])
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-m4trace:configure.ac:1181: -1- AC_SUBST_TRACE([incdir])
-m4trace:configure.ac:1181: -1- m4_pattern_allow([^incdir$])
-m4trace:configure.ac:1182: -1- AC_SUBST([BUILD_DIR])
-m4trace:configure.ac:1182: -1- AC_SUBST_TRACE([BUILD_DIR])
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-m4trace:configure.ac:1185: -1- AC_SUBST([datarootdir])
-m4trace:configure.ac:1185: -1- AC_SUBST_TRACE([datarootdir])
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-m4trace:configure.ac:1186: -1- AC_SUBST_TRACE([localedir])
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-m4trace:configure.ac:1202: -1- AC_SUBST_TRACE([LOCAL_CFLAGS])
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-m4trace:configure.ac:1209: -1- AC_CONFIG_FILES([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \
+m4trace:configure.ac:1074: -1- AC_DEFINE_TRACE_LITERAL([SVR4])
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+m4trace:configure.ac:1075: -1- AC_DEFINE_TRACE_LITERAL([SVR5])
+m4trace:configure.ac:1075: -1- m4_pattern_allow([^SVR5$])
+m4trace:configure.ac:1094: -1- AC_DEFINE_TRACE_LITERAL([PGRP_PIPE])
+m4trace:configure.ac:1094: -1- m4_pattern_allow([^PGRP_PIPE$])
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+m4trace:configure.ac:1180: -1- AC_SUBST([PROFILE_FLAGS])
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+m4trace:configure.ac:1199: -1- AC_SUBST([host_vendor])
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+m4trace:configure.ac:1210: -1- AC_CONFIG_FILES([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \
lib/intl/Makefile \
lib/malloc/Makefile lib/sh/Makefile lib/termcap/Makefile \
lib/tilde/Makefile doc/Makefile support/Makefile po/Makefile.in \
examples/loadables/Makefile examples/loadables/perl/Makefile])
-m4trace:configure.ac:1209: -1- _m4_warn([obsolete], [AC_OUTPUT should be used without arguments.
+m4trace:configure.ac:1210: -1- _m4_warn([obsolete], [AC_OUTPUT should be used without arguments.
You should run autoupdate.], [])
-m4trace:configure.ac:1209: -1- AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
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-m4trace:configure.ac:1209: -1- AC_SUBST_TRACE([INSTALL])
+m4trace:configure.ac:1210: -1- AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
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+m4trace:configure.ac:1210: -1- AC_SUBST_TRACE([abs_builddir])
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+m4trace:configure.ac:1210: -1- AC_SUBST_TRACE([INSTALL])
if (hf && *hf && file_exists (hf))
{
read_history (hf);
+ /* We have read all of the lines from the history file, even if we
+ read more lines than $HISTSIZE. Remember the total number of lines
+ we read so we don't count the last N lines as new over and over
+ again. */
+ history_lines_in_file = history_lines_read_from_file;
using_history ();
- history_lines_in_file = where_history ();
+ /* history_lines_in_file = where_history () + history_base - 1; */
}
}
struct stat buf;
result = EXECUTION_SUCCESS;
- if (history_lines_this_session && (history_lines_this_session <= where_history ()))
+ if (history_lines_this_session > 0 && (history_lines_this_session <= where_history ()))
{
/* If the filename was supplied, then create it if necessary. */
if (stat (filename, &buf) == -1 && errno == ENOENT)
close (fd);
}
result = append_history (history_lines_this_session, filename);
+ /* Pretend we already read these lines from the file because we just
+ added them */
history_lines_in_file += history_lines_this_session;
history_lines_this_session = 0;
}
char *hf;
result = 0;
- if (history_lines_this_session)
+ if (history_lines_this_session > 0)
{
hf = get_string_value ("HISTFILE");
else
{
result = write_history (hf);
- history_lines_in_file = history_lines_this_session;
+ history_lines_in_file = history_lines_written_to_file;
+ /* history_lines_in_file = where_history () + history_base - 1; */
}
history_lines_this_session = 0;
else if (flags & WFLAG) /* Write entire history. */
result = write_history (filename);
else if (flags & RFLAG) /* Read entire file. */
- result = read_history (filename);
+ {
+ result = read_history (filename);
+ history_lines_in_file = history_lines_read_from_file;
+ /* history_lines_in_file = where_history () + history_base - 1; */
+ }
else if (flags & NFLAG) /* Read `new' history from file. */
{
/* Read all of the lines in the file that we haven't already read. */
result = read_history_range (filename, history_lines_in_file, -1);
using_history ();
- history_lines_in_file = where_history ();
+ history_lines_in_file = history_lines_read_from_file;
+ /* history_lines_in_file = where_history () + history_base - 1; */
/* If we're rewriting the history file at shell exit rather than just
appending the lines from this session to it, the question is whether
code = setjmp (wait_intr_buf);
if (code)
{
+itrace("wait_builtin: longjmp to wait_intr_buf");
last_command_exit_signal = wait_signal_received;
status = 128 + wait_signal_received;
WAIT_RETURN (status);
/* Define if you have the bzero function. */
#undef HAVE_BZERO
+/* Define if you have the chown function. */
+#undef HAVE_CHOWN
+
/* Define if you have the confstr function. */
#undef HAVE_CONFSTR
#! /bin/sh
-# From configure.ac for Bash 4.3, version 4.064.
+# From configure.ac for Bash 4.3, version 4.065.
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for bash 4.3-maint.
#
_ACEOF
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
+$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
+if ${ac_cv_type_uid_t+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/types.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "uid_t" >/dev/null 2>&1; then :
+ ac_cv_type_uid_t=yes
+else
+ ac_cv_type_uid_t=no
+fi
+rm -f conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
+$as_echo "$ac_cv_type_uid_t" >&6; }
+if test $ac_cv_type_uid_t = no; then
+
+$as_echo "#define uid_t int" >>confdefs.h
+
+
+$as_echo "#define gid_t int" >>confdefs.h
+
+fi
+
+for ac_header in unistd.h
+do :
+ ac_fn_c_check_header_mongrel "$LINENO" "unistd.h" "ac_cv_header_unistd_h" "$ac_includes_default"
+if test "x$ac_cv_header_unistd_h" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_UNISTD_H 1
+_ACEOF
+
+fi
+
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working chown" >&5
+$as_echo_n "checking for working chown... " >&6; }
+if ${ac_cv_func_chown_works+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ ac_cv_func_chown_works=no
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$ac_includes_default
+#include <fcntl.h>
+
+int
+main ()
+{
+ char *f = "conftest.chown";
+ struct stat before, after;
+
+ if (creat (f, 0600) < 0)
+ return 1;
+ if (stat (f, &before) < 0)
+ return 1;
+ if (chown (f, (uid_t) -1, (gid_t) -1) == -1)
+ return 1;
+ if (stat (f, &after) < 0)
+ return 1;
+ return ! (before.st_uid == after.st_uid && before.st_gid == after.st_gid);
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+ ac_cv_func_chown_works=yes
+else
+ ac_cv_func_chown_works=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+rm -f conftest.chown
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_func_chown_works" >&5
+$as_echo "$ac_cv_func_chown_works" >&6; }
+if test $ac_cv_func_chown_works = yes; then
+
+$as_echo "#define HAVE_CHOWN 1" >>confdefs.h
+
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether getpgrp requires zero arguments" >&5
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
-$as_echo_n "checking for uid_t in sys/types.h... " >&6; }
-if ${ac_cv_type_uid_t+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <sys/types.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
- $EGREP "uid_t" >/dev/null 2>&1; then :
- ac_cv_type_uid_t=yes
-else
- ac_cv_type_uid_t=no
-fi
-rm -f conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_uid_t" >&5
-$as_echo "$ac_cv_type_uid_t" >&6; }
-if test $ac_cv_type_uid_t = no; then
-
-$as_echo "#define uid_t int" >>confdefs.h
-
-
-$as_echo "#define gid_t int" >>confdefs.h
-
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking type of array argument to getgroups" >&5
$as_echo_n "checking type of array argument to getgroups... " >&6; }
if ${ac_cv_type_getgroups+:} false; then :
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-AC_REVISION([for Bash 4.3, version 4.064])dnl
+AC_REVISION([for Bash 4.3, version 4.065])dnl
define(bashvers, 4.3)
define(relstatus, maint)
dnl special checks for libc functions
AC_FUNC_ALLOCA
+AC_FUNC_CHOWN
AC_FUNC_GETPGRP
AC_FUNC_SETVBUF_REVERSED
AC_FUNC_VPRINTF
--- /dev/null
+# This file is a shell script that caches the results of configure
+# tests for CYGWIN32 so they don't need to be done when cross-compiling.
+
+# AC_FUNC_GETPGRP should also define GETPGRP_VOID
+ac_cv_func_getpgrp_void=${ac_cv_func_getpgrp_void='yes'}
+# AC_FUNC_SETVBUF_REVERSED should not define anything else
+ac_cv_func_setvbuf_reversed=${ac_cv_func_setvbuf_reversed='no'}
+# on CYGWIN32, system calls do not restart
+ac_cv_sys_restartable_syscalls=${ac_cv_sys_restartable_syscalls='no'}
+bash_cv_sys_restartable_syscalls=${bash_cv_sys_restartable_syscalls='no'}
+
+# these may be necessary, but they are currently commented out
+#ac_cv_c_bigendian=${ac_cv_c_bigendian='no'}
+ac_cv_sizeof_char_p=${ac_cv_sizeof_char_p='4'}
+ac_cv_sizeof_int=${ac_cv_sizeof_int='4'}
+ac_cv_sizeof_long=${ac_cv_sizeof_long='4'}
+ac_cv_sizeof_double=${ac_cv_sizeof_double='8'}
+
+bash_cv_dup2_broken=${bash_cv_dup2_broken='no'}
+bash_cv_pgrp_pipe=${bash_cv_pgrp_pipe='no'}
+bash_cv_type_rlimit=${bash_cv_type_rlimit='long'}
+bash_cv_decl_under_sys_siglist=${bash_cv_decl_under_sys_siglist='no'}
+bash_cv_under_sys_siglist=${bash_cv_under_sys_siglist='no'}
+bash_cv_sys_siglist=${bash_cv_sys_siglist='no'}
+bash_cv_opendir_not_robust=${bash_cv_opendir_not_robust='no'}
+bash_cv_getenv_redef=${bash_cv_getenv_redef='yes'}
+bash_cv_printf_declared=${bash_cv_printf_declared='yes'}
+bash_cv_ulimit_maxfds=${bash_cv_ulimit_maxfds='no'}
+bash_cv_getcwd_calls_popen=${bash_cv_getcwd_calls_popen='no'}
+bash_cv_must_reinstall_sighandlers=${bash_cv_must_reinstall_sighandlers='no'}
+bash_cv_job_control_missing=${bash_cv_job_control_missing='present'}
+bash_cv_sys_named_pipes=${bash_cv_sys_named_pipes='missing'}
+bash_cv_func_sigsetjmp=${bash_cv_func_sigsetjmp='missing'}
+bash_cv_mail_dir=${bash_cv_mail_dir='unknown'}
+bash_cv_func_strcoll_broken=${bash_cv_func_strcoll_broken='no'}
+
+bash_cv_type_int32_t=${bash_cv_type_int32_t='int'}
+bash_cv_type_u_int32_t=${bash_cv_type_u_int32_t='int'}
+
+ac_cv_type_bits64_t=${ac_cv_type_bits64_t='no'}
+
+# end of cross-build/cygwin32.cache
--- /dev/null
+This is the Bash FAQ, version 3.24, for Bash version 2.05b.
+
+This document contains a set of frequently-asked questions concerning
+Bash, the GNU Bourne-Again Shell. Bash is a freely-available command
+interpreter with advanced features for both interactive use and shell
+programming.
+
+Another good source of basic information about shells is the collection
+of FAQ articles periodically posted to comp.unix.shell.
+
+Questions and comments concerning this document should be sent to
+chet@po.cwru.edu.
+
+This document is available for anonymous FTP with the URL
+
+ftp://ftp.cwru.edu/pub/bash/FAQ
+
+The Bash home page is http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html
+
+----------
+Contents:
+
+Section A: The Basics
+
+A1) What is it?
+A2) What's the latest version?
+A3) Where can I get it?
+A4) On what machines will bash run?
+A5) Will bash run on operating systems other than Unix?
+A6) How can I build bash with gcc?
+A7) How can I make bash my login shell?
+A8) I just changed my login shell to bash, and now I can't FTP into my
+ machine. Why not?
+A9) What's the `POSIX 1003.2 standard'?
+A10) What is the bash `posix mode'?
+
+Section B: The latest version
+
+B1) What's new in version 2.05b?
+B2) Are there any user-visible incompatibilities between bash-2.05b and
+ bash-1.14.7?
+
+Section C: Differences from other Unix shells
+
+C1) How does bash differ from sh, the Bourne shell?
+C2) How does bash differ from the Korn shell, version ksh88?
+C3) Which new features in ksh-93 are not in bash, and which are?
+
+Section D: Why does bash do some things differently than other Unix shells?
+
+D1) Why does bash run a different version of `command' than
+ `which command' says it will?
+D2) Why doesn't bash treat brace expansions exactly like csh?
+D3) Why doesn't bash have csh variable modifiers?
+D4) How can I make my csh aliases work when I convert to bash?
+D5) How can I pipe standard output and standard error from one command to
+ another, like csh does with `|&'?
+D6) Now that I've converted from ksh to bash, are there equivalents to
+ ksh features like autoloaded functions and the `whence' command?
+
+Section E: Why does bash do certain things the way it does?
+
+E1) Why is the bash builtin `test' slightly different from /bin/test?
+E2) Why does bash sometimes say `Broken pipe'?
+E3) When I have terminal escape sequences in my prompt, why does bash
+ wrap lines at the wrong column?
+E4) If I pipe the output of a command into `read variable', why doesn't
+ the output show up in $variable when the read command finishes?
+E5) I have a bunch of shell scripts that use backslash-escaped characters
+ in arguments to `echo'. Bash doesn't interpret these characters. Why
+ not, and how can I make it understand them?
+E6) Why doesn't a while or for loop get suspended when I type ^Z?
+E7) What about empty for loops in Makefiles?
+E8) Why does the arithmetic evaluation code complain about `08'?
+E9) Why does the pattern matching expression [A-Z]* match files beginning
+ with every letter except `z'?
+E10) Why does `cd //' leave $PWD as `//'?
+E11) If I resize my xterm while another program is running, why doesn't bash
+ notice the change?
+
+Section F: Things to watch out for on certain Unix versions
+
+F1) Why can't I use command line editing in my `cmdtool'?
+F2) I built bash on Solaris 2. Why do globbing expansions and filename
+ completion chop off the first few characters of each filename?
+F3) Why does bash dump core after I interrupt username completion or
+ `~user' tilde expansion on a machine running NIS?
+F4) I'm running SVR4.2. Why is the line erased every time I type `@'?
+F5) Why does bash report syntax errors when my C News scripts use a
+ redirection before a subshell command?
+F6) Why can't I use vi-mode editing on Red Hat Linux 6.1?
+F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on
+ HP/UX 11.x?
+
+Section G: How can I get bash to do certain common things?
+
+G1) How can I get bash to read and display eight-bit characters?
+G2) How do I write a function `x' to replace builtin command `x', but
+ still invoke the command from within the function?
+G3) How can I find the value of a shell variable whose name is the value
+ of another shell variable?
+G4) How can I make the bash `time' reserved word print timing output that
+ looks like the output from my system's /usr/bin/time?
+G5) How do I get the current directory into my prompt?
+G6) How can I rename "*.foo" to "*.bar"?
+G7) How can I translate a filename from uppercase to lowercase?
+G8) How can I write a filename expansion (globbing) pattern that will match
+ all files in the current directory except "." and ".."?
+
+Section H: Where do I go from here?
+
+H1) How do I report bugs in bash, and where should I look for fixes and
+ advice?
+H2) What kind of bash documentation is there?
+H3) What's coming in future versions?
+H4) What's on the bash `wish list'?
+H5) When will the next release appear?
+
+----------
+Section A: The Basics
+
+A1) What is it?
+
+Bash is a Unix command interpreter (shell). It is an implementation of
+the Posix 1003.2 shell standard, and resembles the Korn and System V
+shells.
+
+Bash contains a number of enhancements over those shells, both
+for interactive use and shell programming. Features geared
+toward interactive use include command line editing, command
+history, job control, aliases, and prompt expansion. Programming
+features include additional variable expansions, shell
+arithmetic, and a number of variables and options to control
+shell behavior.
+
+Bash was originally written by Brian Fox of the Free Software
+Foundation. The current developer and maintainer is Chet Ramey
+of Case Western Reserve University.
+
+A2) What's the latest version?
+
+The latest version is 2.05b, first made available on Wednesday, 17
+July, 2002.
+
+A3) Where can I get it?
+
+Bash is the GNU project's shell, and so is available from the
+master GNU archive site, ftp.gnu.org, and its mirrors. The
+latest version is also available for FTP from ftp.cwru.edu.
+The following URLs tell how to get version 2.05b:
+
+ftp://ftp.gnu.org/pub/gnu/bash/bash-2.05b.tar.gz
+ftp://ftp.cwru.edu/pub/bash/bash-2.05b.tar.gz
+
+Formatted versions of the documentation are available with the URLs:
+
+ftp://ftp.gnu.org/pub/gnu/bash/bash-doc-2.05b.tar.gz
+ftp://ftp.cwru.edu/pub/bash/bash-doc-2.05b.tar.gz
+
+A4) On what machines will bash run?
+
+Bash has been ported to nearly every version of UNIX. All you
+should have to do to build it on a machine for which a port
+exists is to type `configure' and then `make'. The build process
+will attempt to discover the version of UNIX you have and tailor
+itself accordingly, using a script created by GNU autoconf.
+
+More information appears in the file `INSTALL' in the distribution.
+
+The Bash web page (http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html)
+explains how to obtain binary versions of bash for most of the major
+commercial Unix systems.
+
+A5) Will bash run on operating systems other than Unix?
+
+Configuration specifics for Unix-like systems such as QNX and
+LynxOS are included in the distribution. Bash-2.05 and later
+versions should compile and run on Minix 2.0 (patches were
+contributed), but I don't believe anyone has built bash-2.x on
+earlier Minix versions yet.
+
+Bash has been ported to versions of Windows implementing the Win32
+programming interface. This includes Windows 95 and Windows NT.
+The port was done by Cygnus Solutions as part of their CYGWIN
+project. For more information about the project, look at the URLs
+
+http://www.cygwin.com/
+http://sourceware.cygnus.com/cygwin
+
+Cygnus originally ported bash-1.14.7, and that port was part of their
+early GNU-Win32 (the original name) releases. Cygnus has also done a
+port of bash-2.05 to the CYGWIN environment, and it is available as
+part of their current release.
+
+Bash-2.05b should require no local Cygnus changes to build and run under
+CYGWIN.
+
+The Cygnus port works only on Intel machines. There is a port of bash
+(I don't know which version) to the alpha/NT environment available from
+
+ftp://ftp.gnustep.org//pub/win32/bash-alpha-nt-1.01.tar.gz
+
+DJ Delorie has a port of bash-2.x which runs under MS-DOS, as part
+of the DJGPP project. For more information on the project, see
+
+http://www.delorie.com/djgpp/
+
+I have been told that the original DJGPP port was done by Daisuke Aoyama.
+
+Mark Elbrecht <snowball3@bigfoot.com> has sent me notice that bash-2.04
+is available for DJGPP V2. The files are available as:
+
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204b.zip binary
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204d.zip documentation
+ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204s.zip source
+
+Mark has begun to work with bash-2.05, but I don't know the status.
+
+Ports of bash-1.12 and bash-2.0 are available for OS/2 from
+
+ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash_112.zip
+ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash-2.0(253).zip
+
+I haven't looked at either, but the second appears to be a binary-only
+distribution. Beware.
+
+I have received word that Bash (I'm not sure which version, but I
+believe that it's at least bash-2.02.1) is the standard shell on
+BeOS.
+
+A6) How can I build bash with gcc?
+
+Bash configures to use gcc by default if it is available. Read the
+file INSTALL in the distribution for more information.
+
+A7) How can I make bash my login shell?
+
+Some machines let you use `chsh' to change your login shell. Other
+systems use `passwd -s' or `passwd -e'. If one of these works for
+you, that's all you need. Note that many systems require the full
+pathname to a shell to appear in /etc/shells before you can make it
+your login shell. For this, you may need the assistance of your
+friendly local system administrator.
+
+If you cannot do this, you can still use bash as your login shell, but
+you need to perform some tricks. The basic idea is to add a command
+to your login shell's startup file to replace your login shell with
+bash.
+
+For example, if your login shell is csh or tcsh, and you have installed
+bash in /usr/gnu/bin/bash, add the following line to ~/.login:
+
+ if ( -f /usr/gnu/bin/bash ) exec /usr/gnu/bin/bash --login
+
+(the `--login' tells bash that it is a login shell).
+
+It's not a good idea to put this command into ~/.cshrc, because every
+csh you run without the `-f' option, even ones started to run csh scripts,
+reads that file. If you must put the command in ~/.cshrc, use something
+like
+
+ if ( $?prompt ) exec /usr/gnu/bin/bash --login
+
+to ensure that bash is exec'd only when the csh is interactive.
+
+If your login shell is sh or ksh, you have to do two things.
+
+First, create an empty file in your home directory named `.bash_profile'.
+The existence of this file will prevent the exec'd bash from trying to
+read ~/.profile, and re-execing itself over and over again. ~/.bash_profile
+is the first file bash tries to read initialization commands from when
+it is invoked as a login shell.
+
+Next, add a line similar to the above to ~/.profile:
+
+ [ -f /usr/gnu/bin/bash ] && [ -x /usr/gnu/bin/bash ] && \
+ exec /usr/gnu/bin/bash --login
+
+This will cause login shells to replace themselves with bash running as
+a login shell. Once you have this working, you can copy your initialization
+code from ~/.profile to ~/.bash_profile.
+
+I have received word that the recipe supplied above is insufficient for
+machines running CDE. CDE has a maze of twisty little startup files, all
+slightly different.
+
+If you cannot change your login shell in the password file to bash, you
+will have to (apparently) live with CDE using the shell in the password
+file to run its startup scripts. If you have changed your shell to bash,
+there is code in the CDE startup files (on Solaris, at least) that attempts
+to do the right thing. It is, however, often broken, and may require that
+you use the $BASH_ENV trick described below.
+
+`dtterm' claims to use $SHELL as the default program to start, so if you
+can change $SHELL in the CDE startup files, you should be able to use bash
+in your terminal windows.
+
+Setting DTSOURCEPROFILE in ~/.dtprofile will cause the `Xsession' program
+to read your login shell's startup files. You may be able to use bash for
+the rest of the CDE programs by setting SHELL to bash in ~/.dtprofile as
+well, but I have not tried this.
+
+You can use the above `exec' recipe to start bash when not logging in with
+CDE by testing the value of the DT variable:
+
+ if [ -n "$DT" ]; then
+ [ -f /usr/gnu/bin/bash ] && exec /usr/gnu/bin/bash --login
+ fi
+
+If CDE starts its shells non-interactively during login, the login shell
+startup files (~/.profile, ~/.bash_profile) will not be sourced at login.
+To get around this problem, append a line similar to the following to your
+~/.dtprofile:
+
+ BASH_ENV=${HOME}/.bash_profile ; export BASH_ENV
+
+and add the following line to the beginning of ~/.bash_profile:
+
+ unset BASH_ENV
+
+A8) I just changed my login shell to bash, and now I can't FTP into my
+ machine. Why not?
+
+You must add the full pathname to bash to the file /etc/shells. As
+noted in the answer to the previous question, many systems require
+this before you can make bash your login shell.
+
+Most versions of ftpd use this file to prohibit `special' users
+such as `uucp' and `news' from using FTP.
+
+A9) What's the `POSIX 1003.2 standard'?
+
+POSIX is a name originally coined by Richard Stallman for a
+family of open system standards based on UNIX. There are a
+number of aspects of UNIX under consideration for
+standardization, from the basic system services at the system
+call and C library level to applications and tools to system
+administration and management. Each area of standardization is
+assigned to a working group in the 1003 series.
+
+The POSIX Shell and Utilities standard has been developed by IEEE
+Working Group 1003.2 (POSIX.2). It concentrates on the command
+interpreter interface and utility programs commonly executed from
+the command line or by other programs. An initial version of the
+standard has been approved and published by the IEEE, and work is
+currently underway to update it.
+
+Bash is concerned with the aspects of the shell's behavior
+defined by POSIX.2. The shell command language has of course
+been standardized, including the basic flow control and program
+execution constructs, I/O redirection and pipelining, argument
+handling, variable expansion, and quoting.
+
+The `special' builtins, which must be implemented as part of the
+shell to provide the desired functionality, are specified as
+being part of the shell; examples of these are `eval' and
+`export'. Other utilities appear in the sections of POSIX.2 not
+devoted to the shell which are commonly (and in some cases must
+be) implemented as builtin commands, such as `read' and `test'.
+POSIX.2 also specifies aspects of the shell's interactive
+behavior as part of the UPE, including job control and command
+line editing. Only vi-style line editing commands have been
+standardized; emacs editing commands were left out due to
+objections.
+
+The Open Group has made an older version of its Single Unix
+Specification (version 2), which is very similar to POSIX.2,
+available on the web at
+
+http://www.opengroup.org/onlinepubs/007908799/
+
+The Single Unix Specification, version 3, is available on the web at
+
+http://www.opengroup.org/onlinepubs/007904975/
+
+A10) What is the bash `posix mode'?
+
+Although bash is an implementation of the POSIX.2 shell
+specification, there are areas where the bash default behavior
+differs from that spec. The bash `posix mode' changes the bash
+behavior in these areas so that it obeys the spec more closely.
+
+Posix mode is entered by starting bash with the --posix or
+'-o posix' option or executing `set -o posix' after bash is running.
+
+The specific aspects of bash which change when posix mode is
+active are listed in the file POSIX in the bash distribution.
+They are also listed in a section in the Bash Reference Manual
+(from which that file is generated).
+
+Section B: The latest version
+
+B1) What's new in version 2.05b?
+
+The raison d'etre for bash-2.05b is to make a second intermediate
+release containing the first of the new features to be available
+in bash-3.0 and get feedback on those features before proceeding.
+The major new feature is multibyte character support in both Bash
+and Readline.
+
+Bash-2.05b contains the following new features (see the manual page for
+complete descriptions and the CHANGES and NEWS files in the bash-2.05b
+distribution):
+
+o support for multibyte characters has been added to both bash and readline
+
+o the DEBUG trap is now run *before* simple commands, ((...)) commands,
+ [[...]] conditional commands, and for ((...)) loops
+
+o the shell now performs arithmetic in the largest integer size the machine
+ supports (intmax_t)
+
+o there is a new \D{...} prompt expansion; passes the `...' to strftime(3)
+ and inserts the result into the expanded prompt
+
+o there is a new `here-string' redirection operator: <<< word
+
+o when displaying variables, function attributes and definitions are shown
+ separately, allowing them to be re-used as input (attempting to re-use
+ the old output would result in syntax errors).
+
+o `read' has a new `-u fd' option to read from a specified file descriptor
+
+o the bash debugger in examples/bashdb has been modified to work with the
+ new DEBUG trap semantics, the command set has been made more gdb-like,
+ and the changes to $LINENO make debugging functions work better
+
+o the expansion of $LINENO inside a shell function is only relative to the
+ function start if the shell is interactive -- if the shell is running a
+ script, $LINENO expands to the line number in the script. This is as
+ POSIX-2001 requires
+
+
+A short feature history dating from Bash-2.0:
+
+Bash-2.05a introduced the following new features:
+
+o The `printf' builtin has undergone major work
+
+o There is a new read-only `shopt' option: login_shell, which is set by
+ login shells and unset otherwise
+
+o New `\A' prompt string escape sequence; expanding to time in 24-hour
+ HH:MM format
+
+o New `-A group/-g' option to complete and compgen; goes group name
+ completion
+
+o New [+-]O invocation option to set and unset `shopt' options at startup
+
+o ksh-like `ERR' trap
+
+o `for' loops now allow empty word lists after the `in' reserved word
+
+o new `hard' and `soft' arguments for the `ulimit' builtin
+
+o Readline can be configured to place the user at the same point on the line
+ when retrieving commands from the history list
+
+o Readline can be configured to skip `hidden' files (filenames with a leading
+ `.' on Unix) when performing completion
+
+Bash-2.05 introduced the following new features:
+
+o This version has once again reverted to using locales and strcoll(3) when
+ processing pattern matching bracket expressions, as POSIX requires.
+o Added a new `--init-file' invocation argument as a synonym for `--rcfile',
+ per the new GNU coding standards.
+o The /dev/tcp and /dev/udp redirections now accept service names as well as
+ port numbers.
+o `complete' and `compgen' now take a `-o value' option, which controls some
+ of the aspects of that compspec. Valid values are:
+
+ default - perform bash default completion if programmable
+ completion produces no matches
+ dirnames - perform directory name completion if programmable
+ completion produces no matches
+ filenames - tell readline that the compspec produces filenames,
+ so it can do things like append slashes to
+ directory names and suppress trailing spaces
+o A new loadable builtin, realpath, which canonicalizes and expands symlinks
+ in pathname arguments.
+o When `set' is called without options, it prints function defintions in a
+ way that allows them to be reused as input. This affects `declare' and
+ `declare -p' as well. This only happens when the shell is not in POSIX
+ mode, since POSIX.2 forbids this behavior.
+
+Bash-2.04 introduced the following new features:
+
+o Programmable word completion with the new `complete' and `compgen' builtins;
+ examples are provided in examples/complete/complete-examples
+o `history' has a new `-d' option to delete a history entry
+o `bind' has a new `-x' option to bind key sequences to shell commands
+o The prompt expansion code has new `\j' and `\l' escape sequences
+o The `no_empty_cmd_completion' shell option, if enabled, inhibits
+ command completion when TAB is typed on an empty line
+o `help' has a new `-s' option to print a usage synopsis
+o New arithmetic operators: var++, var--, ++var, --var, expr1,expr2 (comma)
+o New ksh93-style arithmetic for command:
+ for ((expr1 ; expr2; expr3 )); do list; done
+o `read' has new options: `-t', `-n', `-d', `-s'
+o The redirection code handles several filenames specially: /dev/fd/N,
+ /dev/stdin, /dev/stdout, /dev/stderr
+o The redirection code now recognizes /dev/tcp/HOST/PORT and
+ /dev/udp/HOST/PORT and tries to open a TCP or UDP socket, respectively,
+ to the specified port on the specified host
+o The ${!prefix*} expansion has been implemented
+o A new FUNCNAME variable, which expands to the name of a currently-executing
+ function
+o The GROUPS variable is no longer readonly
+o A new shopt `xpg_echo' variable, to control the behavior of echo with
+ respect to backslash-escape sequences at runtime
+o The NON_INTERACTIVE_LOGIN_SHELLS #define has returned
+
+The version of Readline released with Bash-2.04, Readline-4.1, had several
+new features as well:
+
+o Parentheses matching is always compiled into readline, and controllable
+ with the new `blink-matching-paren' variable
+o The history-search-forward and history-search-backward functions now leave
+ point at the end of the line when the search string is empty, like
+ reverse-search-history, and forward-search-history
+o A new function for applications: rl_on_new_line_with_prompt()
+o New variables for applications: rl_already_prompted, and rl_gnu_readline_p
+
+
+Bash-2.03 had very few new features, in keeping with the convention
+that odd-numbered releases provide mainly bug fixes. A number of new
+features were added to Readline, mostly at the request of the Cygnus
+folks.
+
+A new shopt option, `restricted_shell', so that startup files can test
+ whether or not the shell was started in restricted mode
+Filename generation is now performed on the words between ( and ) in
+ compound array assignments (this is really a bug fix)
+OLDPWD is now auto-exported, as POSIX.2 requires
+ENV and BASH_ENV are read-only variables in a restricted shell
+Bash may now be linked against an already-installed Readline library,
+ as long as the Readline library is version 4 or newer
+All shells begun with the `--login' option will source the login shell
+ startup files, even if the shell is not interactive
+
+There were lots of changes to the version of the Readline library released
+along with Bash-2.03. For a complete list of the changes, read the file
+CHANGES in the Bash-2.03 distribution.
+
+Bash-2.02 contained the following new features:
+
+a new version of malloc (based on the old GNU malloc code in previous
+ bash versions) that is more page-oriented, more conservative
+ with memory usage, does not `orphan' large blocks when they
+ are freed, is usable on 64-bit machines, and has allocation
+ checking turned on unconditionally
+POSIX.2-style globbing character classes ([:alpha:], [:alnum:], etc.)
+POSIX.2-style globbing equivalence classes
+POSIX.2-style globbing collating symbols
+the ksh [[...]] extended conditional command
+the ksh egrep-style extended pattern matching operators
+a new `printf' builtin
+the ksh-like $(<filename) command substitution, which is equivalent to
+ $(cat filename)
+new tilde prefixes that expand to directories from the directory stack
+new `**' arithmetic operator to do exponentiation
+case-insensitive globbing (filename expansion)
+menu completion a la tcsh
+`magic-space' history expansion function like tcsh
+the readline inputrc `language' has a new file inclusion directive ($include)
+
+Bash-2.01 contained only a few new features:
+
+new `GROUPS' builtin array variable containing the user's group list
+new bindable readline commands: history-and-alias-expand-line and
+ alias-expand-line
+
+Bash-2.0 contained extensive changes and new features from bash-1.14.7.
+Here's a short list:
+
+new `time' reserved word to time pipelines, shell builtins, and
+ shell functions
+one-dimensional arrays with a new compound assignment statement,
+ appropriate expansion constructs and modifications to some
+ of the builtins (read, declare, etc.) to use them
+new quoting syntaxes for ANSI-C string expansion and locale-specific
+ string translation
+new expansions to do substring extraction, pattern replacement, and
+ indirect variable expansion
+new builtins: `disown' and `shopt'
+new variables: HISTIGNORE, SHELLOPTS, PIPESTATUS, DIRSTACK, GLOBIGNORE,
+ MACHTYPE, BASH_VERSINFO
+special handling of many unused or redundant variables removed
+ (e.g., $notify, $glob_dot_filenames, $no_exit_on_failed_exec)
+dynamic loading of new builtin commands; many loadable examples provided
+new prompt expansions: \a, \e, \n, \H, \T, \@, \v, \V
+history and aliases available in shell scripts
+new readline variables: enable-keypad, mark-directories, input-meta,
+ visible-stats, disable-completion, comment-begin
+new readline commands to manipulate the mark and operate on the region
+new readline emacs mode commands and bindings for ksh-88 compatibility
+updated and extended builtins
+new DEBUG trap
+expanded (and now documented) restricted shell mode
+
+implementation stuff:
+autoconf-based configuration
+nearly all of the bugs reported since version 1.14 have been fixed
+most builtins converted to use builtin `getopt' for consistency
+most builtins use -p option to display output in a reusable form
+ (for consistency)
+grammar tighter and smaller (66 reduce-reduce conflicts gone)
+lots of code now smaller and faster
+test suite greatly expanded
+
+B2) Are there any user-visible incompatibilities between bash-2.05b and
+ bash-1.14.7?
+
+There are a few incompatibilities between version 1.14.7 and version 2.05b.
+They are detailed in the file COMPAT in the bash distribution. That file
+is not meant to be all-encompassing; send mail to bash-maintainers@gnu.org
+if if you find something that's not mentioned there.
+
+Section C: Differences from other Unix shells
+
+C1) How does bash differ from sh, the Bourne shell?
+
+This is a non-comprehensive list of features that differentiate bash
+from the SVR4.2 shell. The bash manual page explains these more
+completely.
+
+Things bash has that sh does not:
+ long invocation options
+ [+-]O invocation option
+ -l invocation option
+ `!' reserved word to invert pipeline return value
+ `time' reserved word to time pipelines and shell builtins
+ the `function' reserved word
+ the `select' compound command and reserved word
+ arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done
+ new $'...' and $"..." quoting
+ the $(...) form of command substitution
+ the $(<filename) form of command substitution, equivalent to
+ $(cat filename)
+ the ${#param} parameter value length operator
+ the ${!param} indirect parameter expansion operator
+ the ${!param*} prefix expansion operator
+ the ${param:offset[:length]} parameter substring operator
+ the ${param/pat[/string]} parameter pattern substitution operator
+ expansions to perform substring removal (${p%[%]w}, ${p#[#]w})
+ expansion of positional parameters beyond $9 with ${num}
+ variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, REPLY,
+ TIMEFORMAT, PPID, PWD, OLDPWD, SHLVL, RANDOM, SECONDS,
+ LINENO, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE, HOSTNAME,
+ ENV, PS3, PS4, DIRSTACK, PIPESTATUS, HISTSIZE, HISTFILE,
+ HISTFILESIZE, HISTCONTROL, HISTIGNORE, GLOBIGNORE, GROUPS,
+ PROMPT_COMMAND, FCEDIT, FIGNORE, IGNOREEOF, INPUTRC,
+ SHELLOPTS, OPTERR, HOSTFILE, TMOUT, FUNCNAME, histchars,
+ auto_resume
+ DEBUG trap
+ ERR trap
+ variable arrays with new compound assignment syntax
+ redirections: <>, &>, >|, <<<, [n]<&word-, [n]>&word-
+ prompt string special char translation and variable expansion
+ auto-export of variables in initial environment
+ command search finds functions before builtins
+ bash return builtin will exit a file sourced with `.'
+ builtins: cd -/-L/-P, exec -l/-c/-a, echo -e/-E, hash -d/-l/-p/-t.
+ export -n/-f/-p/name=value, pwd -L/-P,
+ read -e/-p/-a/-t/-n/-d/-s/-u,
+ readonly -a/-f/name=value, trap -l, set +o,
+ set -b/-m/-o option/-h/-p/-B/-C/-H/-P,
+ unset -f/-v, ulimit -m/-p/-u,
+ type -a/-p/-t/-f/-P, suspend -f, kill -n,
+ test -o optname/s1 == s2/s1 < s2/s1 > s2/-nt/-ot/-ef/-O/-G/-S
+ bash reads ~/.bashrc for interactive shells, $ENV for non-interactive
+ bash restricted shell mode is more extensive
+ bash allows functions and variables with the same name
+ brace expansion
+ tilde expansion
+ arithmetic expansion with $((...)) and `let' builtin
+ the `[[...]]' extended conditional command
+ process substitution
+ aliases and alias/unalias builtins
+ local variables in functions and `local' builtin
+ readline and command-line editing with programmable completion
+ command history and history/fc builtins
+ csh-like history expansion
+ other new bash builtins: bind, command, compgen, complete, builtin,
+ declare/typeset, dirs, enable, fc, help,
+ history, logout, popd, pushd, disown, shopt,
+ printf
+ exported functions
+ filename generation when using output redirection (command >a*)
+ POSIX.2-style globbing character classes
+ POSIX.2-style globbing equivalence classes
+ POSIX.2-style globbing collating symbols
+ egrep-like extended pattern matching operators
+ case-insensitive pattern matching and globbing
+ variable assignments preceding commands affect only that command,
+ even for builtins and functions
+ posix mode
+ redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr,
+ /dev/tcp/host/port, /dev/udp/host/port
+
+Things sh has that bash does not:
+ uses variable SHACCT to do shell accounting
+ includes `stop' builtin (bash can use alias stop='kill -s STOP')
+ `newgrp' builtin
+ turns on job control if called as `jsh'
+ $TIMEOUT (like bash $TMOUT)
+ `^' is a synonym for `|'
+ new SVR4.2 sh builtins: mldmode, priv
+
+Implementation differences:
+ redirection to/from compound commands causes sh to create a subshell
+ bash does not allow unbalanced quotes; sh silently inserts them at EOF
+ bash does not mess with signal 11
+ sh sets (euid, egid) to (uid, gid) if -p not supplied and uid < 100
+ bash splits only the results of expansions on IFS, using POSIX.2
+ field splitting rules; sh splits all words on IFS
+ sh does not allow MAILCHECK to be unset (?)
+ sh does not allow traps on SIGALRM or SIGCHLD
+ bash allows multiple option arguments when invoked (e.g. -x -v);
+ sh allows only a single option argument (`sh -x -v' attempts
+ to open a file named `-v', and, on SunOS 4.1.4, dumps core.
+ On Solaris 2.4 and earlier versions, sh goes into an infinite
+ loop.)
+ sh exits a script if any builtin fails; bash exits only if one of
+ the POSIX.2 `special' builtins fails
+
+C2) How does bash differ from the Korn shell, version ksh88?
+
+Things bash has or uses that ksh88 does not:
+ long invocation options
+ [-+]O invocation option
+ -l invocation option
+ `!' reserved word
+ arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done
+ arithmetic in largest machine-supported size (intmax_t)
+ posix mode and posix conformance
+ command hashing
+ tilde expansion for assignment statements that look like $PATH
+ process substitution with named pipes if /dev/fd is not available
+ the ${!param} indirect parameter expansion operator
+ the ${!param*} prefix expansion operator
+ the ${param:offset[:length]} parameter substring operator
+ the ${param/pat[/string]} parameter pattern substitution operator
+ variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, SHLVL,
+ TIMEFORMAT, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE,
+ HISTFILESIZE, HISTIGNORE, HISTCONTROL, PROMPT_COMMAND,
+ IGNOREEOF, FIGNORE, INPUTRC, HOSTFILE, DIRSTACK,
+ PIPESTATUS, HOSTNAME, OPTERR, SHELLOPTS, GLOBIGNORE,
+ GROUPS, FUNCNAME, histchars, auto_resume
+ prompt expansion with backslash escapes and command substitution
+ redirection: &> (stdout and stderr), <<<, [n]<&word-, [n]>&word-
+ more extensive and extensible editing and programmable completion
+ builtins: bind, builtin, command, declare, dirs, echo -e/-E, enable,
+ exec -l/-c/-a, fc -s, export -n/-f/-p, hash, help, history,
+ jobs -x/-r/-s, kill -s/-n/-l, local, logout, popd, pushd,
+ read -e/-p/-a/-t/-n/-d/-s, readonly -a/-n/-f/-p,
+ set -o braceexpand/-o histexpand/-o interactive-comments/
+ -o notify/-o physical/-o posix/-o hashall/-o onecmd/
+ -h/-B/-C/-b/-H/-P, set +o, suspend, trap -l, type,
+ typeset -a/-F/-p, ulimit -u, umask -S, alias -p, shopt,
+ disown, printf, complete, compgen
+ `!' csh-style history expansion
+ POSIX.2-style globbing character classes
+ POSIX.2-style globbing equivalence classes
+ POSIX.2-style globbing collating symbols
+ egrep-like extended pattern matching operators
+ case-insensitive pattern matching and globbing
+ `**' arithmetic operator to do exponentiation
+ redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr
+ arrays of unlimited size
+ TMOUT is default timeout for `read' and `select'
+
+Things ksh88 has or uses that bash does not:
+ tracked aliases (alias -t)
+ variables: ERRNO, FPATH, EDITOR, VISUAL
+ co-processes (|&, >&p, <&p)
+ weirdly-scoped functions
+ typeset +f to list all function names without definitions
+ text of command history kept in a file, not memory
+ builtins: alias -x, cd old new, fc -e -, newgrp, print,
+ read -p/-s/var?prompt, set -A/-o gmacs/
+ -o bgnice/-o markdirs/-o nolog/-o trackall/-o viraw/-s,
+ typeset -H/-L/-R/-Z/-A/-ft/-fu/-fx/-l/-u/-t, whence
+ using environment to pass attributes of exported variables
+ arithmetic evaluation done on arguments to some builtins
+ reads .profile from $PWD when invoked as login shell
+
+Implementation differences:
+ ksh runs last command of a pipeline in parent shell context
+ bash has brace expansion by default (ksh88 compile-time option)
+ bash has fixed startup file for all interactive shells; ksh reads $ENV
+ bash has exported functions
+ bash command search finds functions before builtins
+ bash waits for all commands in pipeline to exit before returning status
+ emacs-mode editing has some slightly different key bindings
+
+C3) Which new features in ksh-93 are not in bash, and which are?
+
+New things in ksh-93 not in bash-2.05b:
+ associative arrays
+ floating point arithmetic and variables
+ math library functions
+ ${!name[sub]} name of subscript for associative array
+ `.' is allowed in variable names to create a hierarchical namespace
+ more extensive compound assignment syntax
+ discipline functions
+ `sleep' and `getconf' builtins (bash has loadable versions)
+ typeset -n and `nameref' variables
+ KEYBD trap
+ variables: .sh.edchar, .sh.edmode, .sh.edcol, .sh.edtext, .sh.version,
+ .sh.name, .sh.subscript, .sh.value, .sh.match, HISTEDIT
+ backreferences in pattern matching (\N)
+ `&' operator in pattern lists for matching
+ print -f (bash uses printf)
+ `fc' has been renamed to `hist'
+ `.' can execute shell functions
+ exit statuses between 0 and 255
+ set -o pipefail
+ `+=' variable assignment operator
+ FPATH and PATH mixing
+ getopts -a
+ -I invocation option
+ DEBUG trap now executed before each simple command, instead of after
+ printf %H, %P, %T, %Z modifiers, output base for %d
+ lexical scoping for local variables in `ksh' functions
+ no scoping for local variables in `POSIX' functions
+
+New things in ksh-93 present in bash-2.05b:
+ [n]<&word- and [n]>&word- redirections (combination dup and close)
+ for (( expr1; expr2; expr3 )) ; do list; done - arithmetic for command
+ ?:, ++, --, `expr1 , expr2' arithmetic operators
+ expansions: ${!param}, ${param:offset[:len]}, ${param/pat[/str]},
+ ${!param*}
+ compound array assignment
+ the `!' reserved word
+ loadable builtins -- but ksh uses `builtin' while bash uses `enable'
+ `command', `builtin', `disown' builtins
+ new $'...' and $"..." quoting
+ FIGNORE (but bash uses GLOBIGNORE), HISTCMD
+ set -o notify/-C
+ changes to kill builtin
+ read -A (bash uses read -a)
+ read -t/-d
+ trap -p
+ exec -c/-a
+ `.' restores the positional parameters when it completes
+ POSIX.2 `test'
+ umask -S
+ unalias -a
+ command and arithmetic substitution performed on PS1, PS4, and ENV
+ command name completion
+ ENV processed only for interactive shells
+
+Section D: Why does bash do some things differently than other Unix shells?
+
+D1) Why does bash run a different version of `command' than
+ `which command' says it will?
+
+On many systems, `which' is actually a csh script that assumes
+you're running csh. In tcsh, `which' and its cousin `where'
+are builtins. On other Unix systems, `which' is a perl script
+that uses the PATH environment variable.
+
+The csh script version reads the csh startup files from your
+home directory and uses those to determine which `command' will
+be invoked. Since bash doesn't use any of those startup files,
+there's a good chance that your bash environment differs from
+your csh environment. The bash `type' builtin does everything
+`which' does, and will report correct results for the running
+shell. If you're really wedded to the name `which', try adding
+the following function definition to your .bashrc:
+
+ which()
+ {
+ builtin type "$@"
+ }
+
+If you're moving from tcsh and would like to bring `where' along
+as well, use this function:
+
+ where()
+ {
+ builtin type -a "$@"
+ }
+
+D2) Why doesn't bash treat brace expansions exactly like csh?
+
+The only difference between bash and csh brace expansion is that
+bash requires a brace expression to contain at least one unquoted
+comma if it is to be expanded. Any brace-surrounded word not
+containing an unquoted comma is left unchanged by the brace
+expansion code. This affords the greatest degree of sh
+compatibility.
+
+Bash, ksh, zsh, and pd-ksh all implement brace expansion this way.
+
+D3) Why doesn't bash have csh variable modifiers?
+
+Posix has specified a more powerful, albeit somewhat more cryptic,
+mechanism cribbed from ksh, and bash implements it.
+
+${parameter%word}
+ Remove smallest suffix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ smallest portion of the suffix matched by the pattern deleted.
+
+ x=file.c
+ echo ${x%.c}.o
+ -->file.o
+
+${parameter%%word}
+
+ Remove largest suffix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ largest portion of the suffix matched by the pattern deleted.
+
+ x=posix/src/std
+ echo ${x%%/*}
+ -->posix
+
+${parameter#word}
+ Remove smallest prefix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ smallest portion of the prefix matched by the pattern deleted.
+
+ x=$HOME/src/cmd
+ echo ${x#$HOME}
+ -->/src/cmd
+
+${parameter##word}
+ Remove largest prefix pattern. The WORD is expanded to produce
+ a pattern. It then expands to the value of PARAMETER, with the
+ largest portion of the prefix matched by the pattern deleted.
+
+ x=/one/two/three
+ echo ${x##*/}
+ -->three
+
+
+Given
+ a=/a/b/c/d
+ b=b.xxx
+
+ csh bash result
+ --- ---- ------
+ $a:h ${a%/*} /a/b/c
+ $a:t ${a##*/} d
+ $b:r ${b%.*} b
+ $b:e ${b##*.} xxx
+
+
+D4) How can I make my csh aliases work when I convert to bash?
+
+Bash uses a different syntax to support aliases than csh does.
+The details can be found in the documentation. We have provided
+a shell script which does most of the work of conversion for you;
+this script can be found in ./examples/misc/aliasconv.sh. Here is
+how you use it:
+
+Start csh in the normal way for you. (e.g., `csh')
+
+Pipe the output of `alias' through `aliasconv.sh', saving the
+results into `bash_aliases':
+
+ alias | bash aliasconv.sh >bash_aliases
+
+Edit `bash_aliases', carefully reading through any created
+functions. You will need to change the names of some csh specific
+variables to the bash equivalents. The script converts $cwd to
+$PWD, $term to $TERM, $home to $HOME, $user to $USER, and $prompt
+to $PS1. You may also have to add quotes to avoid unwanted
+expansion.
+
+For example, the csh alias:
+
+ alias cd 'cd \!*; echo $cwd'
+
+is converted to the bash function:
+
+ cd () { command cd "$@"; echo $PWD ; }
+
+The only thing that needs to be done is to quote $PWD:
+
+ cd () { command cd "$@"; echo "$PWD" ; }
+
+Merge the edited file into your ~/.bashrc.
+
+There is an additional, more ambitious, script in
+examples/misc/cshtobash that attempts to convert your entire csh
+environment to its bash equivalent. This script can be run as
+simply `cshtobash' to convert your normal interactive
+environment, or as `cshtobash ~/.login' to convert your login
+environment.
+
+D5) How can I pipe standard output and standard error from one command to
+ another, like csh does with `|&'?
+
+Use
+ command 2>&1 | command2
+
+The key is to remember that piping is performed before redirection, so
+file descriptor 1 points to the pipe when it is duplicated onto file
+descriptor 2.
+
+D6) Now that I've converted from ksh to bash, are there equivalents to
+ ksh features like autoloaded functions and the `whence' command?
+
+There are features in ksh-88 and ksh-93 that do not have direct bash
+equivalents. Most, however, can be emulated with very little trouble.
+
+ksh-88 feature Bash equivalent
+-------------- ---------------
+compiled-in aliases set up aliases in .bashrc; some ksh aliases are
+ bash builtins (hash, history, type)
+coprocesses named pipe pairs (one for read, one for write)
+typeset +f declare -F
+cd, print, whence function substitutes in examples/functions/kshenv
+autoloaded functions examples/functions/autoload is the same as typeset -fu
+read var?prompt read -p prompt var
+
+ksh-93 feature Bash equivalent
+-------------- ---------------
+sleep, getconf Bash has loadable versions in examples/loadables
+${.sh.version} $BASH_VERSION
+print -f printf
+hist alias hist=fc
+$HISTEDIT $FCEDIT
+
+Section E: How can I get bash to do certain things, and why does bash do
+ things the way it does?
+
+E1) Why is the bash builtin `test' slightly different from /bin/test?
+
+The specific example used here is [ ! x -o x ], which is false.
+
+Bash's builtin `test' implements the Posix.2 spec, which can be
+summarized as follows (the wording is due to David Korn):
+
+Here is the set of rules for processing test arguments.
+
+ 0 Args: False
+ 1 Arg: True iff argument is not null.
+ 2 Args: If first arg is !, True iff second argument is null.
+ If first argument is unary, then true if unary test is true
+ Otherwise error.
+ 3 Args: If second argument is a binary operator, do binary test of $1 $3
+ If first argument is !, negate two argument test of $2 $3
+ If first argument is `(' and third argument is `)', do the
+ one-argument test of the second argument.
+ Otherwise error.
+ 4 Args: If first argument is !, negate three argument test of $2 $3 $4.
+ Otherwise unspecified
+ 5 or more Args: unspecified. (Historical shells would use their
+ current algorithm).
+
+The operators -a and -o are considered binary operators for the purpose
+of the 3 Arg case.
+
+As you can see, the test becomes (not (x or x)), which is false.
+
+E2) Why does bash sometimes say `Broken pipe'?
+
+If a sequence of commands appears in a pipeline, and one of the
+reading commands finishes before the writer has finished, the
+writer receives a SIGPIPE signal. Many other shells special-case
+SIGPIPE as an exit status in the pipeline and do not report it.
+For example, in:
+
+ ps -aux | head
+
+`head' can finish before `ps' writes all of its output, and ps
+will try to write on a pipe without a reader. In that case, bash
+will print `Broken pipe' to stderr when ps is killed by a
+SIGPIPE.
+
+You can build a version of bash that will not report SIGPIPE errors
+by uncommenting the definition of DONT_REPORT_SIGPIPE in the file
+config-top.h.
+
+E3) When I have terminal escape sequences in my prompt, why does bash
+ wrap lines at the wrong column?
+
+Readline, the line editing library that bash uses, does not know
+that the terminal escape sequences do not take up space on the
+screen. The redisplay code assumes, unless told otherwise, that
+each character in the prompt is a `printable' character that
+takes up one character position on the screen.
+
+You can use the bash prompt expansion facility (see the PROMPTING
+section in the manual page) to tell readline that sequences of
+characters in the prompt strings take up no screen space.
+
+Use the \[ escape to begin a sequence of non-printing characters,
+and the \] escape to signal the end of such a sequence.
+
+E4) If I pipe the output of a command into `read variable', why doesn't
+ the output show up in $variable when the read command finishes?
+
+This has to do with the parent-child relationship between Unix
+processes. It affects all commands run in pipelines, not just
+simple calls to `read'. For example, piping a command's output
+into a `while' loop that repeatedly calls `read' will result in
+the same behavior.
+
+Each element of a pipeline runs in a separate process, a child of
+the shell running the pipeline. A subprocess cannot affect its
+parent's environment. When the `read' command sets the variable
+to the input, that variable is set only in the subshell, not the
+parent shell. When the subshell exits, the value of the variable
+is lost.
+
+Many pipelines that end with `read variable' can be converted
+into command substitutions, which will capture the output of
+a specified command. The output can then be assigned to a
+variable:
+
+ grep ^gnu /usr/lib/news/active | wc -l | read ngroup
+
+can be converted into
+
+ ngroup=$(grep ^gnu /usr/lib/news/active | wc -l)
+
+This does not, unfortunately, work to split the text among
+multiple variables, as read does when given multiple variable
+arguments. If you need to do this, you can either use the
+command substitution above to read the output into a variable
+and chop up the variable using the bash pattern removal
+expansion operators or use some variant of the following
+approach.
+
+Say /usr/local/bin/ipaddr is the following shell script:
+
+#! /bin/sh
+host `hostname` | awk '/address/ {print $NF}'
+
+Instead of using
+
+ /usr/local/bin/ipaddr | read A B C D
+
+to break the local machine's IP address into separate octets, use
+
+ OIFS="$IFS"
+ IFS=.
+ set -- $(/usr/local/bin/ipaddr)
+ IFS="$OIFS"
+ A="$1" B="$2" C="$3" D="$4"
+
+Beware, however, that this will change the shell's positional
+parameters. If you need them, you should save them before doing
+this.
+
+This is the general approach -- in most cases you will not need to
+set $IFS to a different value.
+
+Some other user-supplied alternatives include:
+
+read A B C D << HERE
+ $(IFS=.; echo $(/usr/local/bin/ipaddr))
+HERE
+
+and, where process substitution is available,
+
+read A B C D < <(IFS=.; echo $(/usr/local/bin/ipaddr))
+
+E5) I have a bunch of shell scripts that use backslash-escaped characters
+ in arguments to `echo'. Bash doesn't interpret these characters. Why
+ not, and how can I make it understand them?
+
+This is the behavior of echo on most Unix System V machines.
+
+The bash builtin `echo' is modeled after the 9th Edition
+Research Unix version of `echo'. It does not interpret
+backslash-escaped characters in its argument strings by default;
+it requires the use of the -e option to enable the
+interpretation. The System V echo provides no way to disable the
+special characters; the bash echo has a -E option to disable
+them.
+
+There is a configuration option that will make bash behave like
+the System V echo and interpret things like `\t' by default. Run
+configure with the --enable-xpg-echo-default option to turn this
+on. Be aware that this will cause some of the tests run when you
+type `make tests' to fail.
+
+There is a shell option, `xpg_echo', settable with `shopt', that will
+change the behavior of echo at runtime. Enabling this option turns
+on expansion of backslash-escape sequences.
+
+E6) Why doesn't a while or for loop get suspended when I type ^Z?
+
+This is a consequence of how job control works on Unix. The only
+thing that can be suspended is the process group. This is a single
+command or pipeline of commands that the shell forks and executes.
+
+When you run a while or for loop, the only thing that the shell forks
+and executes are any commands in the while loop test and commands in
+the loop bodies. These, therefore, are the only things that can be
+suspended when you type ^Z.
+
+If you want to be able to stop the entire loop, you need to put it
+within parentheses, which will force the loop into a subshell that
+may be stopped (and subsequently restarted) as a single unit.
+
+E7) What about empty for loops in Makefiles?
+
+It's fairly common to see constructs like this in automatically-generated
+Makefiles:
+
+SUBDIRS = @SUBDIRS@
+
+ ...
+
+subdirs-clean:
+ for d in ${SUBDIRS}; do \
+ ( cd $$d && ${MAKE} ${MFLAGS} clean ) \
+ done
+
+When SUBDIRS is empty, this results in a command like this being passed to
+bash:
+
+ for d in ; do
+ ( cd $d && ${MAKE} ${MFLAGS} clean )
+ done
+
+In versions of bash before bash-2.05a, this was a syntax error. If the
+reserved word `in' was present, a word must follow it before the semicolon
+or newline. The language in the manual page referring to the list of words
+being empty referred to the list after it is expanded. These versions of
+bash required that there be at least one word following the `in' when the
+construct was parsed.
+
+The idiomatic Makefile solution is something like:
+
+SUBDIRS = @SUBDIRS@
+
+subdirs-clean:
+ subdirs=$SUBDIRS ; for d in $$subdirs; do \
+ ( cd $$d && ${MAKE} ${MFLAGS} clean ) \
+ done
+
+The latest drafts of the updated POSIX standard have changed this: the
+word list is no longer required. Bash versions 2.05a and later accept
+the new syntax.
+
+E8) Why does the arithmetic evaluation code complain about `08'?
+
+The bash arithmetic evaluation code (used for `let', $(()), (()), and in
+other places), interprets a leading `0' in numeric constants as denoting
+an octal number, and a leading `0x' as denoting hexadecimal. This is
+in accordance with the POSIX.2 spec, section 2.9.2.1, which states that
+arithmetic constants should be handled as signed long integers as defined
+by the ANSI/ISO C standard.
+
+The POSIX.2 interpretation committee has confirmed this:
+
+http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-173.html
+
+E9) Why does the pattern matching expression [A-Z]* match files beginning
+ with every letter except `z'?
+
+Bash-2.03, Bash-2.05 and later versions honor the current locale setting
+when processing ranges within pattern matching bracket expressions ([A-Z]).
+This is what POSIX.2 and SUSv3/XPG6 specify.
+
+The behavior of the matcher in bash-2.05 and later versions depends on the
+current LC_COLLATE setting. Setting this variable to `C' or `POSIX' will
+result in the traditional behavior ([A-Z] matches all uppercase ASCII
+characters). Many other locales, including the en_US locale (the default
+on many US versions of Linux) collate the upper and lower case letters like
+this:
+
+ AaBb...Zz
+
+which means that [A-Z] matches every letter except `z'. Others collate like
+
+ aAbBcC...zZ
+
+which means that [A-Z] matches every letter except `a'.
+
+The portable way to specify upper case letters is [:upper:] instead of
+A-Z; lower case may be specified as [:lower:] instead of a-z.
+
+Look at the manual pages for setlocale(3), strcoll(3), and, if it is
+present, locale(1). If you have locale(1), you can use it to find
+your current locale information even if you do not have any of the
+LC_ variables set.
+
+My advice is to put
+
+ export LC_COLLATE=C
+
+into /etc/profile and inspect any shell scripts run from cron for
+constructs like [A-Z]. This will prevent things like
+
+ rm [A-Z]*
+
+from removing every file in the current directory except those beginning
+with `z' and still allow individual users to change the collation order.
+Users may put the above command into their own profiles as well, of course.
+
+E10) Why does `cd //' leave $PWD as `//'?
+
+POSIX.2, in its description of `cd', says that *three* or more leading
+slashes may be replaced with a single slash when canonicalizing the
+current working directory.
+
+This is, I presume, for historical compatibility. Certain versions of
+Unix, and early network file systems, used paths of the form
+//hostname/path to access `path' on server `hostname'.
+
+E11) If I resize my xterm while another program is running, why doesn't bash
+ notice the change?
+
+This is another issue that deals with job control.
+
+The kernel maintains a notion of a current terminal process group. Members
+of this process group (processes whose process group ID is equal to the
+current terminal process group ID) receive terminal-generated signals like
+SIGWINCH. (For more details, see the JOB CONTROL section of the bash
+man page.)
+
+If a terminal is resized, the kernel sends SIGWINCH to each member of
+the terminal's current process group (the `foreground' process group).
+
+When bash is running with job control enabled, each pipeline (which may be
+a single command) is run in its own process group, different from bash's
+process group. This foreground process group receives the SIGWINCH; bash
+does not. Bash has no way of knowing that the terminal has been resized.
+
+There is a `checkwinsize' option, settable with the `shopt' builtin, that
+will cause bash to check the window size and adjust its idea of the
+terminal's dimensions each time a process stops or exits and returns control
+of the terminal to bash. Enable it with `shopt -s checkwinsize'.
+
+Section F: Things to watch out for on certain Unix versions
+
+F1) Why can't I use command line editing in my `cmdtool'?
+
+The problem is `cmdtool' and bash fighting over the input. When
+scrolling is enabled in a cmdtool window, cmdtool puts the tty in
+`raw mode' to permit command-line editing using the mouse for
+applications that cannot do it themselves. As a result, bash and
+cmdtool each try to read keyboard input immediately, with neither
+getting enough of it to be useful.
+
+This mode also causes cmdtool to not implement many of the
+terminal functions and control sequences appearing in the
+`sun-cmd' termcap entry. For a more complete explanation, see
+that file examples/suncmd.termcap in the bash distribution.
+
+`xterm' is a better choice, and gets along with bash much more
+smoothly.
+
+If you must use cmdtool, you can use the termcap description in
+examples/suncmd.termcap. Set the TERMCAP variable to the terminal
+description contained in that file, i.e.
+
+TERMCAP='Mu|sun-cmd:am:bs:km:pt:li#34:co#80:cl=^L:ce=\E[K:cd=\E[J:rs=\E[s:'
+
+Then export TERMCAP and start a new cmdtool window from that shell.
+The bash command-line editing should behave better in the new
+cmdtool. If this works, you can put the assignment to TERMCAP
+in your bashrc file.
+
+F2) I built bash on Solaris 2. Why do globbing expansions and filename
+ completion chop off the first few characters of each filename?
+
+This is the consequence of building bash on SunOS 5 and linking
+with the libraries in /usr/ucblib, but using the definitions
+and structures from files in /usr/include.
+
+The actual conflict is between the dirent structure in
+/usr/include/dirent.h and the struct returned by the version of
+`readdir' in libucb.a (a 4.3-BSD style `struct direct').
+
+Make sure you've got /usr/ccs/bin ahead of /usr/ucb in your $PATH
+when configuring and building bash. This will ensure that you
+use /usr/ccs/bin/cc or acc instead of /usr/ucb/cc and that you
+link with libc before libucb.
+
+If you have installed the Sun C compiler, you may also need to
+put /usr/ccs/bin and /opt/SUNWspro/bin into your $PATH before
+/usr/ucb.
+
+F3) Why does bash dump core after I interrupt username completion or
+ `~user' tilde expansion on a machine running NIS?
+
+This is a famous and long-standing bug in the SunOS YP (sorry, NIS)
+client library, which is part of libc.
+
+The YP library code keeps static state -- a pointer into the data
+returned from the server. When YP initializes itself (setpwent),
+it looks at this pointer and calls free on it if it's non-null.
+So far, so good.
+
+If one of the YP functions is interrupted during getpwent (the
+exact function is interpretwithsave()), and returns NULL, the
+pointer is freed without being reset to NULL, and the function
+returns. The next time getpwent is called, it sees that this
+pointer is non-null, calls free, and the bash free() blows up
+because it's being asked to free freed memory.
+
+The traditional Unix mallocs allow memory to be freed multiple
+times; that's probably why this has never been fixed. You can
+run configure with the `--without-gnu-malloc' option to use
+the C library malloc and avoid the problem.
+
+F4) I'm running SVR4.2. Why is the line erased every time I type `@'?
+
+The `@' character is the default `line kill' character in most
+versions of System V, including SVR4.2. You can change this
+character to whatever you want using `stty'. For example, to
+change the line kill character to control-u, type
+
+ stty kill ^U
+
+where the `^' and `U' can be two separate characters.
+
+F5) Why does bash report syntax errors when my C News scripts use a
+ redirection before a subshell command?
+
+The actual command in question is something like
+
+ < file ( command )
+
+According to the grammar given in the POSIX.2 standard, this construct
+is, in fact, a syntax error. Redirections may only precede `simple
+commands'. A subshell construct such as the above is one of the shell's
+`compound commands'. A redirection may only follow a compound command.
+
+This affects the mechanical transformation of commands that use `cat'
+to pipe a file into a command (a favorite Useless-Use-Of-Cat topic on
+comp.unix.shell). While most commands of the form
+
+ cat file | command
+
+can be converted to `< file command', shell control structures such as
+loops and subshells require `command < file'.
+
+The file CWRU/sh-redir-hack in the bash-2.05a distribution is an
+(unofficial) patch to parse.y that will modify the grammar to
+support this construct. It will not apply with `patch'; you must
+modify parse.y by hand. Note that if you apply this, you must
+recompile with -DREDIRECTION_HACK. This introduces a large
+number of reduce/reduce conflicts into the shell grammar.
+
+F6) Why can't I use vi-mode editing on Red Hat Linux 6.1?
+
+The short answer is that Red Hat screwed up.
+
+The long answer is that they shipped an /etc/inputrc that only works
+for emacs mode editing, and then screwed all the vi users by setting
+INPUTRC to /etc/inputrc in /etc/profile.
+
+The short fix is to do one of the following: remove or rename
+/etc/inputrc, set INPUTRC=~/.inputrc in ~/.bashrc (or .bash_profile,
+but make sure you export it if you do), remove the assignment to
+INPUTRC from /etc/profile, add
+
+ set keymap emacs
+
+to the beginning of /etc/inputrc, or bracket the key bindings in
+/etc/inputrc with these lines
+
+ $if mode=emacs
+ [...]
+ $endif
+
+F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on
+ HP/UX 11.x?
+
+HP/UX's support for long double is imperfect at best.
+
+GCC will support it without problems, but the HP C library functions
+like strtold(3) and printf(3) don't actually work with long doubles.
+HP implemented a `long_double' type as a 4-element array of 32-bit
+ints, and that is what the library functions use. The ANSI C
+`long double' type is a 128-bit floating point scalar.
+
+The easiest fix, until HP fixes things up, is to edit the generated
+config.h and #undef the HAVE_LONG_DOUBLE line. After doing that,
+the compilation should complete successfully.
+
+Section G: How can I get bash to do certain common things?
+
+G1) How can I get bash to read and display eight-bit characters?
+
+This is a process requiring several steps.
+
+First, you must ensure that the `physical' data path is a full eight
+bits. For xterms, for example, the `vt100' resources `eightBitInput'
+and `eightBitOutput' should be set to `true'.
+
+Once you have set up an eight-bit path, you must tell the kernel and
+tty driver to leave the eighth bit of characters alone when processing
+keyboard input. Use `stty' to do this:
+
+ stty cs8 -istrip -parenb
+
+For old BSD-style systems, you can use
+
+ stty pass8
+
+You may also need
+
+ stty even odd
+
+Finally, you need to tell readline that you will be inputting and
+displaying eight-bit characters. You use readline variables to do
+this. These variables can be set in your .inputrc or using the bash
+`bind' builtin. Here's an example using `bind':
+
+ bash$ bind 'set convert-meta off'
+ bash$ bind 'set meta-flag on'
+ bash$ bind 'set output-meta on'
+
+The `set' commands between the single quotes may also be placed
+in ~/.inputrc.
+
+G2) How do I write a function `x' to replace builtin command `x', but
+ still invoke the command from within the function?
+
+This is why the `command' and `builtin' builtins exist. The
+`command' builtin executes the command supplied as its first
+argument, skipping over any function defined with that name. The
+`builtin' builtin executes the builtin command given as its first
+argument directly.
+
+For example, to write a function to replace `cd' that writes the
+hostname and current directory to an xterm title bar, use
+something like the following:
+
+ cd()
+ {
+ builtin cd "$@" && xtitle "$HOST: $PWD"
+ }
+
+This could also be written using `command' instead of `builtin';
+the version above is marginally more efficient.
+
+G3) How can I find the value of a shell variable whose name is the value
+ of another shell variable?
+
+Versions of Bash newer than Bash-2.0 support this directly. You can use
+
+ ${!var}
+
+For example, the following sequence of commands will echo `z':
+
+ var1=var2
+ var2=z
+ echo ${!var1}
+
+For sh compatibility, use the `eval' builtin. The important
+thing to remember is that `eval' expands the arguments you give
+it again, so you need to quote the parts of the arguments that
+you want `eval' to act on.
+
+For example, this expression prints the value of the last positional
+parameter:
+
+ eval echo \"\$\{$#\}\"
+
+The expansion of the quoted portions of this expression will be
+deferred until `eval' runs, while the `$#' will be expanded
+before `eval' is executed. In versions of bash later than bash-2.0,
+
+ echo ${!#}
+
+does the same thing.
+
+This is not the same thing as ksh93 `nameref' variables, though the syntax
+is similar. I may add namerefs in a future bash version.
+
+G4) How can I make the bash `time' reserved word print timing output that
+ looks like the output from my system's /usr/bin/time?
+
+The bash command timing code looks for a variable `TIMEFORMAT' and
+uses its value as a format string to decide how to display the
+timing statistics.
+
+The value of TIMEFORMAT is a string with `%' escapes expanded in a
+fashion similar in spirit to printf(3). The manual page explains
+the meanings of the escape sequences in the format string.
+
+If TIMEFORMAT is not set, bash acts as if the following assignment had
+been performed:
+
+ TIMEFORMAT=$'\nreal\t%3lR\nuser\t%3lU\nsys\t%3lS'
+
+The POSIX.2 default time format (used by `time -p command') is
+
+ TIMEFORMAT=$'real %2R\nuser %2U\nsys %2S'
+
+The BSD /usr/bin/time format can be emulated with:
+
+ TIMEFORMAT=$'\t%1R real\t%1U user\t%1S sys'
+
+The System V /usr/bin/time format can be emulated with:
+
+ TIMEFORMAT=$'\nreal\t%1R\nuser\t%1U\nsys\t%1S'
+
+The ksh format can be emulated with:
+
+ TIMEFORMAT=$'\nreal\t%2lR\nuser\t%2lU\nsys\t%2lS'
+
+G5) How do I get the current directory into my prompt?
+
+Bash provides a number of backslash-escape sequences which are expanded
+when the prompt string (PS1 or PS2) is displayed. The full list is in
+the manual page.
+
+The \w expansion gives the full pathname of the current directory, with
+a tilde (`~') substituted for the current value of $HOME. The \W
+expansion gives the basename of the current directory. To put the full
+pathname of the current directory into the path without any tilde
+subsitution, use $PWD. Here are some examples:
+
+ PS1='\w$ ' # current directory with tilde
+ PS1='\W$ ' # basename of current directory
+ PS1='$PWD$ ' # full pathname of current directory
+
+The single quotes are important in the final example to prevent $PWD from
+being expanded when the assignment to PS1 is performed.
+
+G6) How can I rename "*.foo" to "*.bar"?
+
+Use the pattern removal functionality described in D3. The following `for'
+loop will do the trick:
+
+ for f in *.foo; do
+ mv $f ${f%foo}bar
+ done
+
+G7) How can I translate a filename from uppercase to lowercase?
+
+The script examples/functions/lowercase, originally written by John DuBois,
+will do the trick. The converse is left as an exercise.
+
+G8) How can I write a filename expansion (globbing) pattern that will match
+ all files in the current directory except "." and ".."?
+
+You must have set the `extglob' shell option using `shopt -s extglob' to use
+this:
+
+ echo .!(.|) *
+
+A solution that works without extended globbing is given in the Unix Shell
+FAQ, posted periodically to comp.unix.shell.
+
+Section H: Where do I go from here?
+
+H1) How do I report bugs in bash, and where should I look for fixes and
+ advice?
+
+Use the `bashbug' script to report bugs. It is built and
+installed at the same time as bash. It provides a standard
+template for reporting a problem and automatically includes
+information about your configuration and build environment.
+
+`bashbug' sends its reports to bug-bash@gnu.org, which
+is a large mailing list gatewayed to the usenet newsgroup gnu.bash.bug.
+
+Bug fixes, answers to questions, and announcements of new releases
+are all posted to gnu.bash.bug. Discussions concerning bash features
+and problems also take place there.
+
+To reach the bash maintainers directly, send mail to
+bash-maintainers@gnu.org.
+
+H2) What kind of bash documentation is there?
+
+First, look in the doc directory in the bash distribution. It should
+contain at least the following files:
+
+bash.1 an extensive, thorough Unix-style manual page
+builtins.1 a manual page covering just bash builtin commands
+bashref.texi a reference manual in GNU tex`info format
+bashref.info an info version of the reference manual
+FAQ this file
+article.ms text of an article written for The Linux Journal
+readline.3 a man page describing readline
+
+Postscript, HTML, and ASCII files created from the above source are
+available in the documentation distribution.
+
+There is additional documentation available for anonymous FTP from host
+ftp.cwru.edu in the `pub/bash' directory.
+
+Cameron Newham and Bill Rosenblatt have written a book on bash, published
+by O'Reilly and Associates. The book is based on Bill Rosenblatt's Korn
+Shell book. The title is ``Learning the Bash Shell'', and the ISBN number
+is 1-56592-147-X. Look for it in fine bookstores near you. This book
+covers bash-1.14, but has an appendix describing some of the new features
+in bash-2.0.
+
+A second edition of this book is available, published in January, 1998.
+The ISBN number is 1-56592-347-2. Look for it in the same fine bookstores
+or on the web.
+
+The GNU Bash Reference Manual has been published as a printed book by
+Network Theory Ltd (Paperback, ISBN: 0-9541617-7-7, Feb 2003). It covers
+bash-2.0 and is available from most online bookstores (see
+http://www.network-theory.co.uk/bash/manual/ for details). The publisher
+will donate $1 to the Free Software Foundation for each copy sold.
+
+H3) What's coming in future versions?
+
+These are features I hope to include in a future version of bash.
+
+a better bash debugger (a minimally-tested version is included with bash-2.05b)
+associative arrays
+co-processes, but with a new-style syntax that looks like function declaration
+
+H4) What's on the bash `wish list' for future versions?
+
+These are features that may or may not appear in a future version of bash.
+
+breaking some of the shell functionality into embeddable libraries
+a module system like zsh's, using dynamic loading like builtins
+better internationalization using GNU `gettext'
+date-stamped command history
+a bash programmer's guide with a chapter on creating loadable builtins
+a better loadable interface to perl with access to the shell builtins and
+ variables (contributions gratefully accepted)
+ksh93-like `nameref' variables
+ksh93-like `+=' variable assignment operator
+ksh93-like `xx.yy' variables (including some of the .sh.* variables) and
+ associated disipline functions
+Some of the new ksh93 pattern matching operators, like backreferencing
+
+H5) When will the next release appear?
+
+The next version will appear sometime in 2002. Never make predictions.
+
+
+This document is Copyright 1995-2003 by Chester Ramey.
+
+Permission is hereby granted, without written agreement and
+without license or royalty fees, to use, copy, and distribute
+this document for any purpose, provided that the above copyright
+notice appears in all copies of this document and that the
+contents of this document remain unaltered.
--- /dev/null
+#
+# Simple makefile for the sample loadable builtins
+#
+# Copyright (C) 1996 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
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
+
+# Include some boilerplate Gnu makefile definitions.
+prefix = @prefix@
+
+exec_prefix = @exec_prefix@
+bindir = @bindir@
+libdir = @libdir@
+infodir = @infodir@
+includedir = @includedir@
+
+topdir = @top_srcdir@
+BUILD_DIR = @BUILD_DIR@
+srcdir = @srcdir@
+VPATH = .:@srcdir@
+
+@SET_MAKE@
+CC = @CC@
+RM = rm -f
+
+SHELL = @MAKE_SHELL@
+
+host_os = @host_os@
+host_cpu = @host_cpu@
+host_vendor = @host_vendor@
+
+CFLAGS = @CFLAGS@
+LOCAL_CFLAGS = @LOCAL_CFLAGS@
+DEFS = @DEFS@
+LOCAL_DEFS = @LOCAL_DEFS@
+
+CPPFLAGS = @CPPFLAGS@
+
+BASHINCDIR = ${topdir}/include
+
+LIBBUILD = ${BUILD_DIR}/lib
+
+INTL_LIBSRC = ${topdir}/lib/intl
+INTL_BUILDDIR = ${LIBBUILD}/intl
+INTL_INC = @INTL_INC@
+LIBINTL_H = @LIBINTL_H@
+
+CCFLAGS = $(DEFS) $(LOCAL_DEFS) $(LOCAL_CFLAGS) $(CFLAGS)
+
+#
+# These values are generated for configure by ${topdir}/support/shobj-conf.
+# If your system is not supported by that script, but includes facilities for
+# dynamic loading of shared objects, please update the script and send the
+# changes to bash-maintainers@gnu.org.
+#
+SHOBJ_CC = @SHOBJ_CC@
+SHOBJ_CFLAGS = @SHOBJ_CFLAGS@
+SHOBJ_LD = @SHOBJ_LD@
+SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@
+SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
+SHOBJ_LIBS = @SHOBJ_LIBS@
+SHOBJ_STATUS = @SHOBJ_STATUS@
+
+INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \
+ -I$(BASHINCDIR) -I$(BUILD_DIR) -I$(LIBBUILD) \
+ -I$(BUILD_DIR)/builtins $(INTL_INC)
+
+.c.o:
+ $(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
+
+
+ALLPROG = print truefalse sleep pushd finfo logname basename dirname \
+ tty pathchk tee head mkdir rmdir printenv id whoami \
+ uname sync push ln unlink cut realpath getconf strftime
+OTHERPROG = necho hello cat
+
+all: $(SHOBJ_STATUS)
+
+supported: $(ALLPROG)
+others: $(OTHERPROG)
+
+unsupported:
+ @echo "Your system (${host_os}) is not supported by the"
+ @echo "${topdir}/support/shobj-conf script."
+ @echo "If your operating system provides facilities for dynamic"
+ @echo "loading of shared objects using the dlopen(3) interface,"
+ @echo "please update the script and re-run configure.
+ @echo "Please send the changes you made to bash-maintainers@gnu.org"
+ @echo "for inclusion in future bash releases."
+
+everything: supported others
+
+print: print.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ print.o $(SHOBJ_LIBS)
+
+necho: necho.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ necho.o $(SHOBJ_LIBS)
+
+getconf: getconf.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ getconf.o $(SHOBJ_LIBS)
+
+hello: hello.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ hello.o $(SHOBJ_LIBS)
+
+truefalse: truefalse.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ truefalse.o $(SHOBJ_LIBS)
+
+sleep: sleep.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sleep.o $(SHOBJ_LIBS)
+
+finfo: finfo.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ finfo.o $(SHOBJ_LIBS)
+
+cat: cat.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cat.o $(SHOBJ_LIBS)
+
+logname: logname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ logname.o $(SHOBJ_LIBS)
+
+basename: basename.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ basename.o $(SHOBJ_LIBS)
+
+dirname: dirname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ dirname.o $(SHOBJ_LIBS)
+
+tty: tty.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tty.o $(SHOBJ_LIBS)
+
+pathchk: pathchk.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pathchk.o $(SHOBJ_LIBS)
+
+tee: tee.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tee.o $(SHOBJ_LIBS)
+
+mkdir: mkdir.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ mkdir.o $(SHOBJ_LIBS)
+
+rmdir: rmdir.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ rmdir.o $(SHOBJ_LIBS)
+
+head: head.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ head.o $(SHOBJ_LIBS)
+
+printenv: printenv.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ printenv.o $(SHOBJ_LIBS)
+
+id: id.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ id.o $(SHOBJ_LIBS)
+
+whoami: whoami.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ whoami.o $(SHOBJ_LIBS)
+
+uname: uname.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ uname.o $(SHOBJ_LIBS)
+
+sync: sync.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sync.o $(SHOBJ_LIBS)
+
+push: push.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ push.o $(SHOBJ_LIBS)
+
+ln: ln.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ ln.o $(SHOBJ_LIBS)
+
+unlink: unlink.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ unlink.o $(SHOBJ_LIBS)
+
+cut: cut.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cut.o $(SHOBJ_LIBS)
+
+realpath: realpath.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ realpath.o $(SHOBJ_LIBS)
+
+strftime: strftime.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ strftime.o $(SHOBJ_LIBS)
+
+# pushd is a special case. We use the same source that the builtin version
+# uses, with special compilation options.
+#
+pushd.c: ${topdir}/builtins/pushd.def
+ $(RM) $@
+ ${BUILD_DIR}/builtins/mkbuiltins -D ${topdir}/builtins ${topdir}/builtins/pushd.def
+
+pushd.o: pushd.c
+ $(RM) $@
+ $(SHOBJ_CC) -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $<
+
+pushd: pushd.o
+ $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pushd.o $(SHOBJ_LIBS)
+
+clean:
+ $(RM) $(ALLPROG) $(OTHERPROG) *.o
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+mostlyclean: clean
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+distclean maintainer-clean: clean
+ $(RM) Makefile pushd.c
+ -( cd perl && ${MAKE} ${MFLAGS} $@ )
+
+print.o: print.c
+truefalse.o: truefalse.c
+sleep.o: sleep.c
+finfo.o: finfo.c
+logname.o: logname.c
+basename.o: basename.c
+dirname.o: dirname.c
+tty.o: tty.c
+pathchk.o: pathchk.c
+tee.o: tee.c
+head.o: head.c
+rmdir.o: rmdir.c
+necho.o: necho.c
+getconf.o: getconf.c
+hello.o: hello.c
+cat.o: cat.c
+printenv.o: printenv.c
+id.o: id.c
+whoami.o: whoami.c
+uname.o: uname.c
+sync.o: sync.c
+push.o: push.c
+mkdir.o: mkdir.c
+realpath.o: realpath.c
+strftime.o: strftime.c
--- /dev/null
+/* rltty.c -- functions to prepare and restore the terminal for readline's
+ use. */
+
+/* Copyright (C) 1992-2005 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
+
+ Readline is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Readline is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <signal.h>
+#include <errno.h>
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#include "rldefs.h"
+
+#if defined (GWINSZ_IN_SYS_IOCTL)
+# include <sys/ioctl.h>
+#endif /* GWINSZ_IN_SYS_IOCTL */
+
+#include "rltty.h"
+#include "readline.h"
+#include "rlprivate.h"
+
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal;
+rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal;
+
+static void set_winsize PARAMS((int));
+
+/* **************************************************************** */
+/* */
+/* Saving and Restoring the TTY */
+/* */
+/* **************************************************************** */
+
+/* Non-zero means that the terminal is in a prepped state. There are several
+ flags that are OR'd in to denote whether or not we have sent various
+ init strings to the terminal. */
+#define TPX_PREPPED 0x01
+#define TPX_BRACKPASTE 0x02
+#define TPX_METAKEY 0x04
+
+static int terminal_prepped;
+
+static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars;
+
+/* If non-zero, means that this process has called tcflow(fd, TCOOFF)
+ and output is suspended. */
+#if defined (__ksr1__)
+static int ksrflow;
+#endif
+
+/* Dummy call to force a backgrounded readline to stop before it tries
+ to get the tty settings. */
+static void
+set_winsize (tty)
+ int tty;
+{
+#if defined (TIOCGWINSZ)
+ struct winsize w;
+
+ if (ioctl (tty, TIOCGWINSZ, &w) == 0)
+ (void) ioctl (tty, TIOCSWINSZ, &w);
+#endif /* TIOCGWINSZ */
+}
+
+#if defined (NO_TTY_DRIVER)
+/* Nothing */
+#elif defined (NEW_TTY_DRIVER)
+
+/* Values for the `flags' field of a struct bsdtty. This tells which
+ elements of the struct bsdtty have been fetched from the system and
+ are valid. */
+#define SGTTY_SET 0x01
+#define LFLAG_SET 0x02
+#define TCHARS_SET 0x04
+#define LTCHARS_SET 0x08
+
+struct bsdtty {
+ struct sgttyb sgttyb; /* Basic BSD tty driver information. */
+ int lflag; /* Local mode flags, like LPASS8. */
+#if defined (TIOCGETC)
+ struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */
+#endif
+#if defined (TIOCGLTC)
+ struct ltchars ltchars; /* 4.2 BSD editing characters */
+#endif
+ int flags; /* Bitmap saying which parts of the struct are valid. */
+};
+
+#define TIOTYPE struct bsdtty
+
+static TIOTYPE otio;
+
+static void save_tty_chars PARAMS((TIOTYPE *));
+static int _get_tty_settings PARAMS((int, TIOTYPE *));
+static int get_tty_settings PARAMS((int, TIOTYPE *));
+static int _set_tty_settings PARAMS((int, TIOTYPE *));
+static int set_tty_settings PARAMS((int, TIOTYPE *));
+
+static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));
+
+static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));
+
+static void
+save_tty_chars (tiop)
+ TIOTYPE *tiop;
+{
+ _rl_last_tty_chars = _rl_tty_chars;
+
+ if (tiop->flags & SGTTY_SET)
+ {
+ _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase;
+ _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill;
+ }
+
+ if (tiop->flags & TCHARS_SET)
+ {
+ _rl_intr_char = _rl_tty_chars.t_intr = tiop->tchars.t_intrc;
+ _rl_quit_char = _rl_tty_chars.t_quit = tiop->tchars.t_quitc;
+
+ _rl_tty_chars.t_start = tiop->tchars.t_startc;
+ _rl_tty_chars.t_stop = tiop->tchars.t_stopc;
+ _rl_tty_chars.t_eof = tiop->tchars.t_eofc;
+ _rl_tty_chars.t_eol = '\n';
+ _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc;
+ }
+
+ if (tiop->flags & LTCHARS_SET)
+ {
+ _rl_susp_char = _rl_tty_chars.t_susp = tiop->ltchars.t_suspc;
+
+ _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc;
+ _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc;
+ _rl_tty_chars.t_flush = tiop->ltchars.t_flushc;
+ _rl_tty_chars.t_werase = tiop->ltchars.t_werasc;
+ _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc;
+ }
+
+ _rl_tty_chars.t_status = -1;
+}
+
+static int
+get_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ set_winsize (tty);
+
+ tiop->flags = tiop->lflag = 0;
+
+ errno = 0;
+ if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0)
+ return -1;
+ tiop->flags |= SGTTY_SET;
+
+#if defined (TIOCLGET)
+ if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0)
+ tiop->flags |= LFLAG_SET;
+#endif
+
+#if defined (TIOCGETC)
+ if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0)
+ tiop->flags |= TCHARS_SET;
+#endif
+
+#if defined (TIOCGLTC)
+ if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0)
+ tiop->flags |= LTCHARS_SET;
+#endif
+
+ return 0;
+}
+
+static int
+set_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ if (tiop->flags & SGTTY_SET)
+ {
+ ioctl (tty, TIOCSETN, &(tiop->sgttyb));
+ tiop->flags &= ~SGTTY_SET;
+ }
+ _rl_echoing_p = 1;
+
+#if defined (TIOCLSET)
+ if (tiop->flags & LFLAG_SET)
+ {
+ ioctl (tty, TIOCLSET, &(tiop->lflag));
+ tiop->flags &= ~LFLAG_SET;
+ }
+#endif
+
+#if defined (TIOCSETC)
+ if (tiop->flags & TCHARS_SET)
+ {
+ ioctl (tty, TIOCSETC, &(tiop->tchars));
+ tiop->flags &= ~TCHARS_SET;
+ }
+#endif
+
+#if defined (TIOCSLTC)
+ if (tiop->flags & LTCHARS_SET)
+ {
+ ioctl (tty, TIOCSLTC, &(tiop->ltchars));
+ tiop->flags &= ~LTCHARS_SET;
+ }
+#endif
+
+ return 0;
+}
+
+static void
+prepare_terminal_settings (meta_flag, oldtio, tiop)
+ int meta_flag;
+ TIOTYPE oldtio, *tiop;
+{
+ _rl_echoing_p = (oldtio.sgttyb.sg_flags & ECHO);
+ _rl_echoctl = (oldtio.sgttyb.sg_flags & ECHOCTL);
+
+ /* Copy the original settings to the structure we're going to use for
+ our settings. */
+ tiop->sgttyb = oldtio.sgttyb;
+ tiop->lflag = oldtio.lflag;
+#if defined (TIOCGETC)
+ tiop->tchars = oldtio.tchars;
+#endif
+#if defined (TIOCGLTC)
+ tiop->ltchars = oldtio.ltchars;
+#endif
+ tiop->flags = oldtio.flags;
+
+ /* First, the basic settings to put us into character-at-a-time, no-echo
+ input mode. */
+ tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD);
+ tiop->sgttyb.sg_flags |= CBREAK;
+
+ /* If this terminal doesn't care how the 8th bit is used, then we can
+ use it for the meta-key. If only one of even or odd parity is
+ specified, then the terminal is using parity, and we cannot. */
+#if !defined (ANYP)
+# define ANYP (EVENP | ODDP)
+#endif
+ if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) ||
+ ((oldtio.sgttyb.sg_flags & ANYP) == 0))
+ {
+ tiop->sgttyb.sg_flags |= ANYP;
+
+ /* Hack on local mode flags if we can. */
+#if defined (TIOCLGET)
+# if defined (LPASS8)
+ tiop->lflag |= LPASS8;
+# endif /* LPASS8 */
+#endif /* TIOCLGET */
+ }
+
+#if defined (TIOCGETC)
+# if defined (USE_XON_XOFF)
+ /* Get rid of terminal output start and stop characters. */
+ tiop->tchars.t_stopc = -1; /* C-s */
+ tiop->tchars.t_startc = -1; /* C-q */
+
+ /* If there is an XON character, bind it to restart the output. */
+ if (oldtio.tchars.t_startc != -1)
+ rl_bind_key (oldtio.tchars.t_startc, rl_restart_output);
+# endif /* USE_XON_XOFF */
+
+ /* If there is an EOF char, bind _rl_eof_char to it. */
+ if (oldtio.tchars.t_eofc != -1)
+ _rl_eof_char = oldtio.tchars.t_eofc;
+
+# if defined (NO_KILL_INTR)
+ /* Get rid of terminal-generated SIGQUIT and SIGINT. */
+ tiop->tchars.t_quitc = -1; /* C-\ */
+ tiop->tchars.t_intrc = -1; /* C-c */
+# endif /* NO_KILL_INTR */
+#endif /* TIOCGETC */
+
+#if defined (TIOCGLTC)
+ /* Make the interrupt keys go away. Just enough to make people happy. */
+ tiop->ltchars.t_dsuspc = -1; /* C-y */
+ tiop->ltchars.t_lnextc = -1; /* C-v */
+#endif /* TIOCGLTC */
+}
+
+#else /* !defined (NEW_TTY_DRIVER) */
+
+#if !defined (VMIN)
+# define VMIN VEOF
+#endif
+
+#if !defined (VTIME)
+# define VTIME VEOL
+#endif
+
+#if defined (TERMIOS_TTY_DRIVER)
+# define TIOTYPE struct termios
+# define DRAIN_OUTPUT(fd) tcdrain (fd)
+# define GETATTR(tty, tiop) (tcgetattr (tty, tiop))
+# ifdef M_UNIX
+# define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop))
+# else
+# define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop))
+# endif /* !M_UNIX */
+#else
+# define TIOTYPE struct termio
+# define DRAIN_OUTPUT(fd)
+# define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop))
+# define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop))
+#endif /* !TERMIOS_TTY_DRIVER */
+
+static TIOTYPE otio;
+
+static void save_tty_chars PARAMS((TIOTYPE *));
+static int _get_tty_settings PARAMS((int, TIOTYPE *));
+static int get_tty_settings PARAMS((int, TIOTYPE *));
+static int _set_tty_settings PARAMS((int, TIOTYPE *));
+static int set_tty_settings PARAMS((int, TIOTYPE *));
+
+static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));
+
+static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));
+static void _rl_bind_tty_special_chars PARAMS((Keymap, TIOTYPE));
+
+#if defined (FLUSHO)
+# define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO)
+#else
+# define OUTPUT_BEING_FLUSHED(tp) 0
+#endif
+
+static void
+save_tty_chars (tiop)
+ TIOTYPE *tiop;
+{
+ _rl_last_tty_chars = _rl_tty_chars;
+
+ _rl_tty_chars.t_eof = tiop->c_cc[VEOF];
+ _rl_tty_chars.t_eol = tiop->c_cc[VEOL];
+#ifdef VEOL2
+ _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2];
+#endif
+ _rl_tty_chars.t_erase = tiop->c_cc[VERASE];
+#ifdef VWERASE
+ _rl_tty_chars.t_werase = tiop->c_cc[VWERASE];
+#endif
+ _rl_tty_chars.t_kill = tiop->c_cc[VKILL];
+#ifdef VREPRINT
+ _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT];
+#endif
+ _rl_intr_char = _rl_tty_chars.t_intr = tiop->c_cc[VINTR];
+ _rl_quit_char = _rl_tty_chars.t_quit = tiop->c_cc[VQUIT];
+#ifdef VSUSP
+ _rl_susp_char = _rl_tty_chars.t_susp = tiop->c_cc[VSUSP];
+#endif
+#ifdef VDSUSP
+ _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP];
+#endif
+#ifdef VSTART
+ _rl_tty_chars.t_start = tiop->c_cc[VSTART];
+#endif
+#ifdef VSTOP
+ _rl_tty_chars.t_stop = tiop->c_cc[VSTOP];
+#endif
+#ifdef VLNEXT
+ _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT];
+#endif
+#ifdef VDISCARD
+ _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD];
+#endif
+#ifdef VSTATUS
+ _rl_tty_chars.t_status = tiop->c_cc[VSTATUS];
+#endif
+}
+
+#if defined (_AIX) || defined (_AIX41)
+/* Currently this is only used on AIX */
+static void
+rltty_warning (msg)
+ char *msg;
+{
+ _rl_errmsg ("warning: %s", msg);
+}
+#endif
+
+#if defined (_AIX)
+void
+setopost(tp)
+TIOTYPE *tp;
+{
+ if ((tp->c_oflag & OPOST) == 0)
+ {
+ _rl_errmsg ("warning: turning on OPOST for terminal\r");
+ tp->c_oflag |= OPOST|ONLCR;
+ }
+}
+#endif
+
+static int
+_get_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ int ioctl_ret;
+
+ while (1)
+ {
+ ioctl_ret = GETATTR (tty, tiop);
+ if (ioctl_ret < 0)
+ {
+ if (errno != EINTR)
+ return -1;
+ else
+ continue;
+ }
+ if (OUTPUT_BEING_FLUSHED (tiop))
+ {
+#if defined (FLUSHO)
+ _rl_errmsg ("warning: turning off output flushing");
+ tiop->c_lflag &= ~FLUSHO;
+ break;
+#else
+ continue;
+#endif
+ }
+ break;
+ }
+
+ return 0;
+}
+
+static int
+get_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ set_winsize (tty);
+
+ errno = 0;
+ if (_get_tty_settings (tty, tiop) < 0)
+ return -1;
+
+#if defined (_AIX)
+ setopost(tiop);
+#endif
+
+ return 0;
+}
+
+static int
+_set_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ while (SETATTR (tty, tiop) < 0)
+ {
+ if (errno != EINTR)
+ return -1;
+ errno = 0;
+ }
+ return 0;
+}
+
+static int
+set_tty_settings (tty, tiop)
+ int tty;
+ TIOTYPE *tiop;
+{
+ if (_set_tty_settings (tty, tiop) < 0)
+ return -1;
+
+#if 0
+
+#if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ if (ksrflow)
+ {
+ ksrflow = 0;
+ tcflow (tty, TCOON);
+ }
+# else /* !ksr1 */
+ tcflow (tty, TCOON); /* Simulate a ^Q. */
+# endif /* !ksr1 */
+#else
+ ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */
+#endif /* !TERMIOS_TTY_DRIVER */
+
+#endif /* 0 */
+
+ return 0;
+}
+
+static void
+prepare_terminal_settings (meta_flag, oldtio, tiop)
+ int meta_flag;
+ TIOTYPE oldtio, *tiop;
+{
+ _rl_echoing_p = (oldtio.c_lflag & ECHO);
+#if defined (ECHOCTL)
+ _rl_echoctl = (oldtio.c_lflag & ECHOCTL);
+#endif
+
+ tiop->c_lflag &= ~(ICANON | ECHO);
+
+ if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE)
+ _rl_eof_char = oldtio.c_cc[VEOF];
+
+#if defined (USE_XON_XOFF)
+#if defined (IXANY)
+ tiop->c_iflag &= ~(IXON | IXANY);
+#else
+ /* `strict' Posix systems do not define IXANY. */
+ tiop->c_iflag &= ~IXON;
+#endif /* IXANY */
+#endif /* USE_XON_XOFF */
+
+ /* Only turn this off if we are using all 8 bits. */
+ if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag)
+ tiop->c_iflag &= ~(ISTRIP | INPCK);
+
+ /* Make sure we differentiate between CR and NL on input. */
+ tiop->c_iflag &= ~(ICRNL | INLCR);
+
+#if !defined (HANDLE_SIGNALS)
+ tiop->c_lflag &= ~ISIG;
+#else
+ tiop->c_lflag |= ISIG;
+#endif
+
+ tiop->c_cc[VMIN] = 1;
+ tiop->c_cc[VTIME] = 0;
+
+#if defined (FLUSHO)
+ if (OUTPUT_BEING_FLUSHED (tiop))
+ {
+ tiop->c_lflag &= ~FLUSHO;
+ oldtio.c_lflag &= ~FLUSHO;
+ }
+#endif
+
+ /* Turn off characters that we need on Posix systems with job control,
+ just to be sure. This includes ^Y and ^V. This should not really
+ be necessary. */
+#if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE)
+
+#if defined (VLNEXT)
+ tiop->c_cc[VLNEXT] = _POSIX_VDISABLE;
+#endif
+
+#if defined (VDSUSP)
+ tiop->c_cc[VDSUSP] = _POSIX_VDISABLE;
+#endif
+
+#endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */
+}
+#endif /* !NEW_TTY_DRIVER */
+
+/* Put the terminal in CBREAK mode so that we can detect key presses. */
+#if defined (NO_TTY_DRIVER)
+void
+rl_prep_terminal (meta_flag)
+ int meta_flag;
+{
+ _rl_echoing_p = 1;
+}
+
+void
+rl_deprep_terminal ()
+{
+}
+
+#else /* ! NO_TTY_DRIVER */
+void
+rl_prep_terminal (meta_flag)
+ int meta_flag;
+{
+ int tty, nprep;
+ TIOTYPE tio;
+
+ if (terminal_prepped)
+ return;
+
+ /* Try to keep this function from being INTerrupted. */
+ _rl_block_sigint ();
+
+ tty = rl_instream ? fileno (rl_instream) : fileno (stdin);
+
+ if (get_tty_settings (tty, &tio) < 0)
+ {
+#if defined (ENOTSUP)
+ /* MacOS X and Linux, at least, lie about the value of errno if
+ tcgetattr fails. */
+ if (errno == ENOTTY || errno == EINVAL || errno == ENOTSUP)
+#else
+ if (errno == ENOTTY || errno == EINVAL)
+#endif
+ _rl_echoing_p = 1; /* XXX */
+
+ _rl_release_sigint ();
+ return;
+ }
+
+ otio = tio;
+
+ if (_rl_bind_stty_chars)
+ {
+#if defined (VI_MODE)
+ /* If editing in vi mode, make sure we restore the bindings in the
+ insertion keymap no matter what keymap we ended up in. */
+ if (rl_editing_mode == vi_mode)
+ rl_tty_unset_default_bindings (vi_insertion_keymap);
+ else
+#endif
+ rl_tty_unset_default_bindings (_rl_keymap);
+ }
+ save_tty_chars (&otio);
+ RL_SETSTATE(RL_STATE_TTYCSAVED);
+ if (_rl_bind_stty_chars)
+ {
+#if defined (VI_MODE)
+ /* If editing in vi mode, make sure we set the bindings in the
+ insertion keymap no matter what keymap we ended up in. */
+ if (rl_editing_mode == vi_mode)
+ _rl_bind_tty_special_chars (vi_insertion_keymap, tio);
+ else
+#endif
+ _rl_bind_tty_special_chars (_rl_keymap, tio);
+ }
+
+ prepare_terminal_settings (meta_flag, otio, &tio);
+
+ if (set_tty_settings (tty, &tio) < 0)
+ {
+ _rl_release_sigint ();
+ return;
+ }
+
+ if (_rl_enable_keypad)
+ _rl_control_keypad (1);
+
+ nprep = TPX_PREPPED;
+
+ if (_rl_enab
+ fflush (rl_outstream);
+ terminal_prepped = nprep;
+ RL_SETSTATE(RL_STATE_TERMPREPPED);
+
+ _rl_release_sigint ();
+}
+
+/* Restore the terminal's normal settings and modes. */
+void
+rl_deprep_terminal ()
+{
+ int tty;
+
+ if (!terminal_prepped)
+ return;
+
+ /* Try to keep this function from being interrupted. */
+ _rl_block_sigint ();
+
+ tty = rl_instream ? fileno (rl_instream) : fileno (stdin);
+
+ if (_rl_enable_keypad)
+ _rl_control_keypad (0);
+
+ fflush (rl_outstream);
+
+ if (set_tty_settings (tty, &otio) < 0)
+ {
+ _rl_release_sigint ();
+ return;
+ }
+
+ terminal_prepped = 0;
+ RL_UNSETSTATE(RL_STATE_TERMPREPPED);
+
+ _rl_release_sigint ();
+}
+#endif /* !NO_TTY_DRIVER */
+\f
+/* **************************************************************** */
+/* */
+/* Bogus Flow Control */
+/* */
+/* **************************************************************** */
+
+int
+rl_restart_output (count, key)
+ int count, key;
+{
+#if defined (__MINGW32__)
+ return 0;
+#else /* !__MING32__ */
+
+ int fildes = fileno (rl_outstream);
+#if defined (TIOCSTART)
+#if defined (apollo)
+ ioctl (&fildes, TIOCSTART, 0);
+#else
+ ioctl (fildes, TIOCSTART, 0);
+#endif /* apollo */
+
+#else /* !TIOCSTART */
+# if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ if (ksrflow)
+ {
+ ksrflow = 0;
+ tcflow (fildes, TCOON);
+ }
+# else /* !ksr1 */
+ tcflow (fildes, TCOON); /* Simulate a ^Q. */
+# endif /* !ksr1 */
+# else /* !TERMIOS_TTY_DRIVER */
+# if defined (TCXONC)
+ ioctl (fildes, TCXONC, TCOON);
+# endif /* TCXONC */
+# endif /* !TERMIOS_TTY_DRIVER */
+#endif /* !TIOCSTART */
+
+ return 0;
+#endif /* !__MINGW32__ */
+}
+
+int
+rl_stop_output (count, key)
+ int count, key;
+{
+#if defined (__MINGW32__)
+ return 0;
+#else
+
+ int fildes = fileno (rl_instream);
+
+#if defined (TIOCSTOP)
+# if defined (apollo)
+ ioctl (&fildes, TIOCSTOP, 0);
+# else
+ ioctl (fildes, TIOCSTOP, 0);
+# endif /* apollo */
+#else /* !TIOCSTOP */
+# if defined (TERMIOS_TTY_DRIVER)
+# if defined (__ksr1__)
+ ksrflow = 1;
+# endif /* ksr1 */
+ tcflow (fildes, TCOOFF);
+# else
+# if defined (TCXONC)
+ ioctl (fildes, TCXONC, TCOON);
+# endif /* TCXONC */
+# endif /* !TERMIOS_TTY_DRIVER */
+#endif /* !TIOCSTOP */
+
+ return 0;
+#endif /* !__MINGW32__ */
+}
+
+/* **************************************************************** */
+/* */
+/* Default Key Bindings */
+/* */
+/* **************************************************************** */
+
+#if !defined (NO_TTY_DRIVER)
+#define SET_SPECIAL(sc, func) set_special_char(kmap, &ttybuff, sc, func)
+#endif
+
+#if defined (NO_TTY_DRIVER)
+
+#define SET_SPECIAL(sc, func)
+#define RESET_SPECIAL(c)
+
+#elif defined (NEW_TTY_DRIVER)
+static void
+set_special_char (kmap, tiop, sc, func)
+ Keymap kmap;
+ TIOTYPE *tiop;
+ int sc;
+ rl_command_func_t *func;
+{
+ if (sc != -1 && kmap[(unsigned char)sc].type == ISFUNC)
+ kmap[(unsigned char)sc].function = func;
+}
+
+#define RESET_SPECIAL(c) \
+ if (c != -1 && kmap[(unsigned char)c].type == ISFUNC) \
+ kmap[(unsigned char)c].function = rl_insert;
+
+static void
+_rl_bind_tty_special_chars (kmap, ttybuff)
+ Keymap kmap;
+ TIOTYPE ttybuff;
+{
+ if (ttybuff.flags & SGTTY_SET)
+ {
+ SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout);
+ SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard);
+ }
+
+# if defined (TIOCGLTC)
+ if (ttybuff.flags & LTCHARS_SET)
+ {
+ SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout);
+ SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert);
+ }
+# endif /* TIOCGLTC */
+}
+
+#else /* !NEW_TTY_DRIVER */
+static void
+set_special_char (kmap, tiop, sc, func)
+ Keymap kmap;
+ TIOTYPE *tiop;
+ int sc;
+ rl_command_func_t *func;
+{
+ unsigned char uc;
+
+ uc = tiop->c_cc[sc];
+ if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC)
+ kmap[uc].function = func;
+}
+
+/* used later */
+#define RESET_SPECIAL(uc) \
+ if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \
+ kmap[uc].function = rl_insert;
+
+static void
+_rl_bind_tty_special_chars (kmap, ttybuff)
+ Keymap kmap;
+ TIOTYPE ttybuff;
+{
+ SET_SPECIAL (VERASE, rl_rubout);
+ SET_SPECIAL (VKILL, rl_unix_line_discard);
+
+# if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER)
+ SET_SPECIAL (VLNEXT, rl_quoted_insert);
+# endif /* VLNEXT && TERMIOS_TTY_DRIVER */
+
+# if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)
+ SET_SPECIAL (VWERASE, rl_unix_word_rubout);
+# endif /* VWERASE && TERMIOS_TTY_DRIVER */
+}
+
+#endif /* !NEW_TTY_DRIVER */
+
+/* Set the system's default editing characters to their readline equivalents
+ in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */
+void
+rltty_set_default_bindings (kmap)
+ Keymap kmap;
+{
+#if !defined (NO_TTY_DRIVER)
+ TIOTYPE ttybuff;
+ int tty;
+
+ tty = fileno (rl_instream);
+
+ if (get_tty_settings (tty, &ttybuff) == 0)
+ _rl_bind_tty_special_chars (kmap, ttybuff);
+#endif
+}
+
+/* New public way to set the system default editing chars to their readline
+ equivalents. */
+void
+rl_tty_set_default_bindings (kmap)
+ Keymap kmap;
+{
+ rltty_set_default_bindings (kmap);
+}
+
+/* Rebind all of the tty special chars that readline worries about back
+ to self-insert. Call this before saving the current terminal special
+ chars with save_tty_chars(). This only works on POSIX termios or termio
+ systems. */
+void
+rl_tty_unset_default_bindings (kmap)
+ Keymap kmap;
+{
+ /* Don't bother before we've saved the tty special chars at least once. */
+ if (RL_ISSTATE(RL_STATE_TTYCSAVED) == 0)
+ return;
+
+ RESET_SPECIAL (_rl_tty_chars.t_erase);
+ RESET_SPECIAL (_rl_tty_chars.t_kill);
+
+# if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER)
+ RESET_SPECIAL (_rl_tty_chars.t_lnext);
+# endif /* VLNEXT && TERMIOS_TTY_DRIVER */
+
+# if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)
+ RESET_SPECIAL (_rl_tty_chars.t_werase);
+# endif /* VWERASE && TERMIOS_TTY_DRIVER */
+}
+
+#if defined (HANDLE_SIGNALS)
+
+#if defined (NEW_TTY_DRIVER) || defined (NO_TTY_DRIVER)
+int
+_rl_disable_tty_signals ()
+{
+ return 0;
+}
+
+int
+_rl_restore_tty_signals ()
+{
+ return 0;
+}
+#else
+
+static TIOTYPE sigstty, nosigstty;
+static int tty_sigs_disabled = 0;
+
+int
+_rl_disable_tty_signals ()
+{
+ if (tty_sigs_disabled)
+ return 0;
+
+ if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0)
+ return -1;
+
+ nosigstty = sigstty;
+
+ nosigstty.c_lflag &= ~ISIG;
+ nosigstty.c_iflag &= ~IXON;
+
+ if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0)
+ return (_set_tty_settings (fileno (rl_instream), &sigstty));
+
+ tty_sigs_disabled = 1;
+ return 0;
+}
+
+int
+_rl_restore_tty_signals ()
+{
+ int r;
+
+ if (tty_sigs_disabled == 0)
+ return 0;
+
+ r = _set_tty_settings (fileno (rl_instream), &sigstty);
+
+ if (r == 0)
+ tty_sigs_disabled = 0;
+
+ return r;
+}
+#endif /* !NEW_TTY_DRIVER */
+
+#endif /* HANDLE_SIGNALS */
--- /dev/null
+# This makefile for Readline library documentation is in -*- text -*- mode.
+# Emacs likes it that way.
+RM = rm -f
+
+MAKEINFO = makeinfo
+TEXI2DVI = texi2dvi
+TEXI2HTML = texi2html
+QUIETPS = #set this to -q to shut up dvips
+DVIPS = dvips -D 300 $(QUIETPS) -o $@ # tricky
+
+INSTALL_DATA = cp
+infodir = /usr/local/info
+
+RLSRC = rlman.texinfo rluser.texinfo rltech.texinfo
+HISTSRC = hist.texinfo hsuser.texinfo hstech.texinfo
+
+DVIOBJ = readline.dvi history.dvi
+INFOOBJ = readline.info history.info
+PSOBJ = readline.ps history.ps
+HTMLOBJ = readline.html history.html
+
+all: info dvi html ps
+nodvi: info html
+
+readline.dvi: $(RLSRC)
+ $(TEXI2DVI) rlman.texinfo
+ mv rlman.dvi readline.dvi
+
+readline.info: $(RLSRC)
+ $(MAKEINFO) --no-split -o $@ rlman.texinfo
+
+history.dvi: ${HISTSRC}
+ $(TEXI2DVI) hist.texinfo
+ mv hist.dvi history.dvi
+
+history.info: ${HISTSRC}
+ $(MAKEINFO) --no-split -o $@ hist.texinfo
+
+readline.ps: readline.dvi
+ $(RM) $@
+ $(DVIPS) readline.dvi
+
+history.ps: history.dvi
+ $(RM) $@
+ $(DVIPS) history.dvi
+
+readline.html: ${RLSRC}
+ $(TEXI2HTML) rlman.texinfo
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman.html > readline.html
+ sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman_toc.html > readline_toc.html
+ $(RM) rlman.html rlman_toc.html
+
+history.html: ${HISTSRC}
+ $(TEXI2HTML) hist.texinfo
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist.html > history.html
+ sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist_toc.html > history_toc.html
+ $(RM) hist.html hist_toc.html
+
+info: $(INFOOBJ)
+dvi: $(DVIOBJ)
+ps: $(PSOBJ)
+html: $(HTMLOBJ)
+
+clean:
+ $(RM) *.aux *.cp *.fn *.ky *.log *.pg *.toc *.tp *.vr *.cps *.pgs \
+ *.fns *.kys *.tps *.vrs *.o core
+
+distclean: clean
+mostlyclean: clean
+
+maintainer-clean: clean
+ $(RM) *.dvi *.info *.info-* *.ps *.html
+
+install: info
+ ${INSTALL_DATA} readline.info $(infodir)/readline.info
+ ${INSTALL_DATA} history.info $(infodir)/history.info
/* If non-zero, we write timestamps to the history file in history_do_write() */
int history_write_timestamps = 0;
+/* Immediately after a call to read_history() or read_history_range(), this
+ will return the number of lines just read from the history file in that
+ call. */
+int history_lines_read_from_file = 0;
+
+/* Immediately after a call to write_history() or history_do_write(), this
+ will return the number of lines just written to the history file in that
+ call. This also works with history_truncate_file. */
+int history_lines_written_to_file = 0;
+
/* Does S look like the beginning of a history timestamp entry? Placeholder
for more extensive tests. */
#define HIST_TIMESTAMP_START(s) (*(s) == history_comment_char && isdigit ((s)[1]) )
int overflow_errno = EIO;
#endif
+ history_lines_read_from_file = 0;
+
buffer = last_ts = (char *)NULL;
input = history_filename (filename);
file = input ? open (input, O_RDONLY|O_BINARY, 0666) : -1;
line_start = line_end + 1;
}
+ history_lines_read_from_file = current_line;
+
FREE (input);
#ifndef HISTORY_USE_MMAP
FREE (buffer);
int lines;
{
char *buffer, *filename, *bakname, *bp, *bp1; /* bp1 == bp+1 */
- int file, chars_read, rv;
+ int file, chars_read, rv, orig_lines, exists;
struct stat finfo;
size_t file_size;
+ history_lines_written_to_file = 0;
+
buffer = (char *)NULL;
filename = history_filename (fname);
bakname = 0;
file = filename ? open (filename, O_RDONLY|O_BINARY, 0666) : -1;
- rv = 0;
+ rv = exists = 0;
/* Don't try to truncate non-regular files. */
if (file == -1 || fstat (file, &finfo) == -1)
close (file);
goto truncate_exit;
}
+ exists = 1;
if (S_ISREG (finfo.st_mode) == 0)
{
goto truncate_exit;
}
+ orig_lines = lines;
/* Count backwards from the end of buffer until we have passed
LINES lines. bp1 is set funny initially. But since bp[1] can't
be a comment character (since it's off the end) and *bp can't be
if (bp <= buffer)
{
rv = 0;
+ /* No-op if LINES == 0 at this point */
+ history_lines_written_to_file = orig_lines - lines;
goto truncate_exit;
}
truncate_exit:
FREE (buffer);
+ history_lines_written_to_file = orig_lines - lines;
+
if (rv != 0 && filename && bakname)
rename (bakname, filename);
else if (rv == 0 && bakname)
unlink (bakname);
+ /* Make sure the new filename is owned by the same user as the old. If one
+ user is running this, it's a no-op. If the shell is running after sudo
+ with a shared history file, we don't want to leave the history file
+ owned by root. */
+ if (rv == 0 && exists)
+ chown (filename, finfo.st_uid, finfo.st_gid);
+
xfree (filename);
FREE (bakname);
return rv;
}
-/* Workhorse function for writing history. Writes NELEMENT entries
+/* Workhorse function for writing history. Writes the last NELEMENT entries
from the history list to FILENAME. OVERWRITE is non-zero if you
wish to replace FILENAME with the entries. */
static int
{
register int i;
char *output, *bakname;
- int file, mode, rv;
+ int file, mode, rv, exists;
+ struct stat finfo;
#ifdef HISTORY_USE_MMAP
size_t cursize;
+ history_lines_written_to_file = 0;
+
mode = overwrite ? O_RDWR|O_CREAT|O_TRUNC|O_BINARY : O_RDWR|O_APPEND|O_BINARY;
#else
mode = overwrite ? O_WRONLY|O_CREAT|O_TRUNC|O_BINARY : O_WRONLY|O_APPEND|O_BINARY;
#endif
output = history_filename (filename);
bakname = (overwrite && output) ? history_backupfile (output) : 0;
+ exists = output ? (stat (output, &finfo) == 0) : 0;
if (output && bakname)
rename (output, bakname);
#endif
}
+ history_lines_written_to_file = nelements;
+
if (close (file) < 0 && rv == 0)
rv = errno;
else if (rv == 0 && bakname)
unlink (bakname);
+ /* Make sure the new filename is owned by the same user as the old. If one
+ user is running this, it's a no-op. If the shell is running after sudo
+ with a shared history file, we don't want to leave the history file
+ owned by root. */
+ if (rv == 0 && exists)
+ chown (output, finfo.st_uid, finfo.st_gid);
+
FREE (output);
FREE (bakname);
extern int history_base;
extern int history_length;
extern int history_max_entries;
+
+extern int history_lines_read_from_file;
+extern int history_lines_written_to_file;
+
extern char history_expansion_char;
extern char history_subst_char;
extern char *history_word_delimiters;
sp->lastfunc = rl_last_func;
sp->insmode = rl_insert_mode;
sp->edmode = rl_editing_mode;
+ sp->kseq = rl_executing_keyseq;
sp->kseqlen = rl_key_sequence_length;
sp->inf = rl_instream;
sp->outf = rl_outstream;
sp->catchsigs = rl_catch_signals;
sp->catchsigwinch = rl_catch_sigwinch;
+ sp->entryfunc = rl_completion_entry_function;
+ sp->menuentryfunc = rl_menu_completion_entry_function;
+ sp->ignorefunc = rl_ignore_some_completions_function;
+ sp->attemptfunc = rl_attempted_completion_function;
+ sp->wordbreakchars = rl_completer_word_break_characters;
+
return (0);
}
rl_last_func = sp->lastfunc;
rl_insert_mode = sp->insmode;
rl_editing_mode = sp->edmode;
+ rl_executing_keyseq = sp->kseq;
rl_key_sequence_length = sp->kseqlen;
rl_instream = sp->inf;
rl_outstream = sp->outf;
rl_catch_signals = sp->catchsigs;
rl_catch_sigwinch = sp->catchsigwinch;
+ rl_completion_entry_function = sp->entryfunc;
+ rl_menu_completion_entry_function = sp->menuentryfunc;
+ rl_ignore_some_completions_function = sp->ignorefunc;
+ rl_attempted_completion_function = sp->attemptfunc;
+ rl_completer_word_break_characters = sp->wordbreakchars;
+
return (0);
}
rl_command_func_t *lastfunc;
int insmode;
int edmode;
+ char *kseq;
int kseqlen;
FILE *inf;
FILE *outf;
/* search state */
/* completion state */
+ rl_compentry_func_t *entryfunc;
+ rl_compentry_func_t *menuentryfunc;
+ rl_compentry_func_t *ignorefunc;
+ rl_compentry_func_t *attemptfunc;
+ char *wordbreakchars;
+
/* options state */
+ /* hook state */
+
/* reserved for future expansion, so the struct size doesn't change */
char reserved[64];
};
#! /bin/sh
-# texi2dvi --- produce DVI (or PDF) files from Texinfo (or LaTeX) sources.
-# $Id: texi2dvi,v 1.14 2003/02/05 00:42:33 karl Exp $
+# texi2dvi --- produce DVI (or PDF) files from Texinfo (or (La)TeX) sources.
+# $Id: texi2dvi 5704 2014-07-07 17:45:16Z karl $
#
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001,
-# 2002, 2003 Free Software Foundation, Inc.
+# Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
+# 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
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# 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
+# the Free Software Foundation; either version 3 of the License,
+# or (at your option) any later version.
#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
-# Original author: Noah Friedman <friedman@gnu.org>.
+# Originally written by Noah Friedman.
#
# Please send bug reports, etc. to bug-texinfo@gnu.org.
# If possible, please send a copy of the output of the script called with
# the `--debug' option when making a bug report.
-# This string is expanded by rcs automatically when this file is checked out.
-rcs_revision='$Revision: 1.14 $'
+test -f /bin/ksh && test -z "$RUNNING_KSH" \
+ && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
+ && { RUNNING_KSH=true; export RUNNING_KSH; exec /bin/ksh $0 ${1+"$@"}; }
+unset RUNNING_KSH
+
+# No failure shall remain unpunished.
+set -e
+
+# In case the default sed doesn't suffice.
+: ${SED=sed}
+
+# This string is expanded automatically when this file is checked out.
+rcs_revision='$Revision: 5704 $'
rcs_version=`set - $rcs_revision; echo $2`
-program=`echo $0 | sed -e 's!.*/!!'`
-version="texi2dvi (GNU Texinfo 4.5) $rcs_version
+program=`echo $0 | $SED -e 's!.*/!!'`
+
+build_mode=${TEXI2DVI_BUILD_MODE:-local}
+build_dir=${TEXI2DVI_BUILD_DIRECTORY:-.}
+
+# Initialize variables for option overriding and otherwise.
+# Don't use `unset' since old bourne shells don't have this command.
+# Instead, assign them an empty value.
+action=compile
+batch=false # interact normally
+catcode_special=maybe
+debug=false
+escape="\\"
+expand=false # true for expansion via makeinfo
+includes=
+line_error=true # pass --file-line-error to TeX
+max_iters=7 # when to quit
+oname= # --output
+out_lang=dvi
+quiet=false # let the tools' message be displayed
+set_language=
+src_specials=
+shell_escape=
+latex2html=hevea # or set to tex4ht
+textra= # Extra TeX commands to insert in the input file.
+txiprereq=19990129 # minimum texinfo.tex version with macro expansion
+verb=false # true for verbose mode
+translate_file= # name of charset translation file
+
+orig_pwd=`pwd`
+
+# We have to initialize IFS to space tab newline since we save and
+# restore IFS and apparently POSIX allows stupid/broken behavior with
+# empty-but-set IFS.
+# http://lists.gnu.org/archive/html/automake-patches/2006-05/msg00008.html
+# We need space, tab and new line, in precisely that order. And don't leave
+# trailing blanks.
+space=' '
+tab=' '
+newline='
+'
+IFS="$space$tab$newline"
+
+# In case someone pedantic insists on using grep -E.
+: ${EGREP=egrep}
+
+# Systems which define $COMSPEC or $ComSpec use semicolons to separate
+# directories in TEXINPUTS -- except for Cygwin et al., where COMSPEC
+# might be inherited, but : is used.
+if test -n "$COMSPEC$ComSpec" \
+ && uname | $EGREP -iv 'cygwin|mingw|djgpp' >/dev/null; then
+ path_sep=";"
+else
+ path_sep=":"
+fi
+
+# Pacify verbose cds.
+CDPATH=${ZSH_VERSION+.}$path_sep
+
+# If $TEX is set to a directory, don't use it.
+test -n "$TEX" && test -d "$TEX" && unset TEX
+
+# \f
+## --------------------- ##
+## Auxiliary functions. ##
+## --------------------- ##
+
+# In case `local' is not supported by the shell, provide a function
+# that simulates it by simply performing the assignments. This means
+# that we must not expect `local' to work, i.e., we must not (i) rely
+# on it during recursion, and (ii) have two local declarations of the
+# same variable. (ii) is easy to check statically, and our test suite
+# does make sure there is never twice a static local declaration of a
+# variable. (i) cannot be checked easily, so just be careful.
+#
+# Note that since we might use a function simulating `local', we can
+# no longer rely on the fact that no IFS-splitting is performed. So,
+# while
+#
+# foo=$bar
+#
+# is fine (no IFS-splitting), never write
+#
+# local foo=$bar
+#
+# but rather
+#
+# local foo="$bar"
+(
+ foo=bar
+ test_local () {
+ local foo=foo
+ }
+ test_local >/dev/null 2>&1
+ test $foo = bar
+) || eval '
+local () {
+ case $1 in
+ *=*) eval "$1";;
+ esac
+}
+'
+
+
+# cd_orig
+# -------
+# Return to the original directory.
+cd_orig ()
+{
+ # In case $orig_pwd is on a different drive (for DOS).
+ cd /
+
+ # Return to the original directory so that
+ # - the next file is processed in correct conditions
+ # - the temporary file can be removed
+ cd "$orig_pwd" || exit 1
+}
+
+# func_dirname FILE
+# -----------------
+# Return the directory part of FILE.
+func_dirname ()
+{
+ dirname "$1" 2>/dev/null \
+ || { echo "$1" | $SED 's!/[^/]*$!!;s!^$!.!'; }
+}
+
+
+# noexit FILE
+# -----------
+# Return FILE with one extension remove. foo.bar.baz -> foo.bar.
+noext ()
+{
+ echo "$1" | $SED -e 's/\.[^/.][^/.]*$//'
+}
+
+
+# absolute NAME -> ABS-NAME
+# -------------------------
+# Return an absolute path to NAME.
+absolute ()
+{
+ case $1 in
+ [\\/]* | ?:[\\/]*)
+ # Absolute paths don't need to be expanded.
+ echo "$1"
+ ;;
+ *) local slashes
+ slashes=`echo "$1" | $SED -n 's,.*[^/]\(/*\)$,\1,p'`
+ local rel
+ rel=$orig_pwd/`func_dirname "$1"`
+ if test -d "$rel"; then
+ (cd "$rel" 2>/dev/null \
+ && local n
+ n=`pwd`/`basename "$1"`"$slashes"
+ echo "$n")
+ else
+ error 1 "not a directory: $rel"
+ fi
+ ;;
+ esac
+}
+
+
+# ensure_dir DIR1 DIR2...
+# -----------------------
+# Make sure the directories exist.
+ensure_dir ()
+{
+ for dir
+ do
+ # Beware that in parallel builds we may have several concurrent
+ # attempts to create the directory. So fail only if "mkdir"
+ # failed *and* the directory still does not exist.
+ test -d "$dir" \
+ || mkdir "$dir" \
+ || test -d "$dir" \
+ || error 1 "cannot create directory: $dir"
+ done
+}
+
+
+# error EXIT_STATUS LINE1 LINE2...
+# --------------------------------
+# Report an error and exit with failure if EXIT_STATUS is non-null.
+error ()
+{
+ local s="$1"
+ shift
+ report "$@"
+ if test "$s" != 0; then
+ exit $s
+ fi
+}
+
+
+# findprog PROG
+# -------------
+# Return true if PROG is somewhere in PATH, else false.
+findprog ()
+{
+ local saveIFS="$IFS"
+ IFS=$path_sep # break path components at the path separator
+ for dir in $PATH; do
+ IFS=$saveIFS
+ # The basic test for an executable is `test -f $f && test -x $f'.
+ # (`test -x' is not enough, because it can also be true for directories.)
+ # We have to try this both for $1 and $1.exe.
+ #
+ # Note: On Cygwin and DJGPP, `test -x' also looks for .exe. On Cygwin,
+ # also `test -f' has this enhancement, but not on DJGPP. (Both are
+ # design decisions, so there is little chance to make them consistent.)
+ # Thusly, it seems to be difficult to make use of these enhancements.
+ #
+ if { test -f "$dir/$1" && test -x "$dir/$1"; } \
+ || { test -f "$dir/$1.exe" && test -x "$dir/$1.exe"; }; then
+ return 0
+ fi
+ done
+ return 1
+}
+
+# report LINE1 LINE2...
+# ---------------------
+# Report some information on stderr.
+report ()
+{
+ for i in "$@"
+ do
+ echo >&2 "$0: $i"
+ done
+}
+
+
+# run COMMAND-LINE
+# ----------------
+# Run the COMMAND-LINE verbosely, and catching errors as failures.
+run ()
+{
+ verbose "Running $@"
+ "$@" 2>&5 1>&2 \
+ || error 1 "$1 failed"
+}
+
+
+# usage
+# -----
+# Display usage and exit successfully.
+usage ()
+{
+ # We used to simply have `echo "$usage"', but coping with the
+ # changing behavior of `echo' is much harder than simply using a
+ # here-doc.
+ #
+ # echo '\noto' echo '\\noto' echo -e '\\noto'
+ # bash 3.1 \noto \\noto \noto
+ # bash 3.2 %oto \noto -e \noto
+ #
+ # where % denotes the eol character.
+ cat <<EOF
+Usage: $program [OPTION]... FILE...
+ or: texi2pdf [OPTION]... FILE...
+ or: pdftexi2dvi [OPTION]... FILE...
+
+Run each Texinfo or (La)TeX FILE through TeX in turn until all
+cross-references are resolved, building all indices. The directory
+containing each FILE is searched for included files. The suffix of FILE
+is used to determine its language ((La)TeX or Texinfo). To process
+(e)plain TeX files, set the environment variable LATEX=tex.
+
+In order to make texi2dvi a drop-in replacement of TeX/LaTeX in AUC-TeX,
+the FILE may also be composed of the following simple TeX commands.
+ \`\\input{FILE}' the actual file to compile
+ \`\\nonstopmode' same as --batch
+
+When invoked as \`texi2pdf' or \`pdftexi2dvi', or given the option --pdf
+or --dvipdf, generate PDF output. Otherwise, generate DVI.
+
+General options:
+ -b, --batch no interaction
+ -D, --debug turn on shell debugging (set -x)
+ -h, --help display this help and exit successfully
+ -o, --output=OFILE leave output in OFILE; only one input FILE is allowed
+ -q, --quiet no output unless errors (implies --batch)
+ -s, --silent same as --quiet
+ -v, --version display version information and exit successfully
+ -V, --verbose report on what is done
+
+Output format:
+ --dvi output a DVI file [default]
+ --dvipdf output a PDF file via DVI (using a dvi-to-pdf program)
+ --html output an HTML file from LaTeX, using HeVeA
+ --info output an Info file from LaTeX, using HeVeA
+ -p, --pdf use pdftex or pdflatex for processing
+ --ps output a PostScript file via DVI (using dvips)
+ --text output a plain text file from LaTeX, using HeVeA
+
+TeX tuning:
+ -@ use @input instead of \input for preloaded Texinfo
+ -e, -E, --expand force macro expansion using makeinfo
+ -I DIR search DIR for Texinfo files
+ -l, --language=LANG specify LANG for FILE, either latex or texinfo
+ --no-line-error do not pass --file-line-error to TeX
+ --shell-escape pass --shell-escape to TeX
+ --src-specials pass --src-specials to TeX
+ -t, --command=CMD insert CMD in copy of input file
+ or --texinfo=CMD multiple values accumulate
+ --translate-file=FILE use given charset translation file for TeX
+
+Build modes:
+ --build=MODE specify the treatment of auxiliary files [$build_mode]
+ --tidy same as --build=tidy
+ -c, --clean same as --build=clean
+ --build-dir=DIR specify where the tidy compilation is performed;
+ implies --tidy;
+ defaults to TEXI2DVI_BUILD_DIRECTORY [$build_dir]
+ --mostly-clean remove the auxiliary files and directories
+ but not the output
+ --max-iterations=N don't process files more than N times [$max_iters]
+
+The MODE specifies where the TeX compilation takes place, and, as a
+consequence, how auxiliary files are treated. The build mode
+can also be set using the environment variable TEXI2DVI_BUILD_MODE.
+
+Valid MODEs are:
+ \`local' compile in the current directory, leaving all the auxiliary
+ files around. This is the traditional TeX use.
+ \`tidy' compile in a local *.t2d directory, where the auxiliary files
+ are left. Output files are copied back to the original file.
+ \`clean' same as \`tidy', but remove the auxiliary directory afterwards.
+ Every compilation therefore requires the full cycle.
+
+Using the \`tidy' mode brings several advantages:
+ - the current directory is not cluttered with plethora of temporary files.
+ - clutter can be even further reduced using --build-dir=dir: all the *.t2d
+ directories are stored there.
+ - clutter can be reduced to zero using, e.g., --build-dir=/tmp/\$USER.t2d
+ or --build-dir=\$HOME/.t2d.
+ - the output file is updated after every successful TeX run, for
+ sake of concurrent visualization of the output. In a \`local' build
+ the viewer stops during the whole TeX run.
+ - if the compilation fails, the previous state of the output file
+ is preserved.
+ - PDF and DVI compilation are kept in separate subdirectories
+ preventing any possibility of auxiliary file incompatibility.
+
+On the other hand, because \`tidy' compilation takes place in another
+directory, occasionally TeX won't be able to find some files (e.g., when
+using \\graphicspath): in that case, use -I to specify the additional
+directories to consider.
+
+The values of the BIBER, BIBTEX, DVIPDF, DVIPS, HEVEA, LATEX, MAKEINDEX,
+MAKEINFO, PDFLATEX, PDFTEX, SED, T4HT, TEX, TEX4HT, TEXINDEX, and THUMBPDF_CMD
+environment variables are used to run those commands, if they are set.
+
+Regarding --dvipdf, if DVIPDF is not set in the environment, the
+following programs are looked for (in this order): dvipdfmx dvipdfm
+dvipdf dvi2pdf dvitopdf.
+
+Any CMD strings are added after @setfilename for Texinfo input, or in
+the first line for LaTeX input.
+
+Report bugs to bug-texinfo@gnu.org,
+general questions and discussion to help-texinfo@gnu.org.
+GNU Texinfo home page: <http://www.gnu.org/software/texinfo/>
+General help using GNU software: <http://www.gnu.org/gethelp/>
+EOF
+ exit 0
+}
+
+
+# verbose WORD1 WORD2
+# -------------------
+# Report some verbose information.
+verbose ()
+{
+ if $verb; then
+ echo >&2 "$0: $@"
+ fi
+}
+
+
+# version
+# -------
+# Display version info and exit successfully.
+version ()
+{
+ cat <<EOF
+texi2dvi (GNU Texinfo 5.2) $rcs_version
+
+Copyright (C) 2014 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+EOF
+ exit 0
+}
+
+
+## ---------------- ##
+## Handling lists. ##
+## ---------------- ##
+
+
+# list_append LIST-NAME ELEM
+# --------------------------
+# Set LIST-NAME to its former contents, with ELEM appended.
+list_append ()
+{
+ local la_l="$1"
+ shift
+ eval set X \$$la_l "$@"
+ shift
+ eval $la_l=\""$@"\"
+}
+
+
+# list_concat_dirs LIST-NAME DIR-LIST
+# -----------------------------------
+# Append to LIST-NAME all the components (included empty) from
+# the $path_sep separated list DIR-LIST. Make the paths absolute.
+list_concat_dirs ()
+{
+ local lcd_list="$1"
+ # Empty path components are meaningful to tex. We rewrite them as
+ # `EMPTY' so they don't get lost when we split on $path_sep.
+ # Hopefully no one will have an actual directory named EMPTY.
+ local replace_EMPTY="-e 's/^$path_sep/EMPTY$path_sep/g' \
+ -e 's/$path_sep\$/${path_sep}EMPTY/g' \
+ -e 's/$path_sep$path_sep/${path_sep}EMPTY:/g'"
+ save_IFS=$IFS
+ IFS=$path_sep
+ set x `echo "$2" | eval $SED $replace_EMPTY`; shift
+ IFS=$save_IFS
+ local dir
+ for dir
+ do
+ case $dir in
+ EMPTY)
+ list_append $lcd_list ""
+ ;;
+ *)
+ if test -d $dir; then
+ dir=`absolute "$dir"`
+ list_append $lcd_list "$dir"
+ fi
+ ;;
+ esac
+ done
+}
+
+
+# list_prefix LIST-NAME SEP -> STRING
+# -----------------------------------
+# Return a string that is composed of the LIST-NAME with each item
+# preceded by SEP.
+list_prefix ()
+{
+ local lp_p="$2"
+ eval set X \$$1
+ shift
+ local lp_res
+ for i
+ do
+ lp_res="$lp_res \"$lp_p\" \"$i\""
+ done
+ echo "$lp_res"
+}
+
+# list_infix LIST-NAME SEP -> STRING
+# ----------------------------------
+# Same as list_prefix, but a separator.
+list_infix ()
+{
+ eval set X \$$1
+ shift
+ local la_IFS="$IFS"
+ IFS=$path_sep
+ echo "$*"
+ IFS=$la_IFS
+}
+
+# list_dir_to_abs LIST-NAME
+# -------------------------
+# Convert the list to using only absolute dir names.
+# Currently unused, but should replace absolute_filenames some day.
+list_dir_to_abs ()
+{
+ local ld_l="$1"
+ eval set X \$$ld_l
+ shift
+ local ld_res
+ for dir
+ do
+ dir=`absolute "$dir"`
+ test -d "$dir" || continue
+ ld_res="$ld_res \"$dir\""
+ done
+ set X $ld_res; shift
+ eval $ld_l=\"$@\"
+}
+
+
+## ------------------------------ ##
+## Language auxiliary functions. ##
+## ------------------------------ ##
+
+
+# out_lang_set LANG
+# -----------------
+out_lang_set ()
+{
+ case $1 in
+ dvi|dvipdf|html|info|pdf|ps|text) out_lang=$1;;
+ *) error 1 "invalid output format: $1";;
+ esac
+}
+
+
+# out_lang_tex
+# ------------
+# Return the tex output language (DVI or PDF) for $OUT_LANG.
+out_lang_tex ()
+{
+ case $out_lang in
+ dvi | ps | dvipdf ) echo dvi;;
+ pdf ) echo $out_lang;;
+ html | info | text ) echo $out_lang;;
+ *) error 1 "invalid out_lang: $1";;
+ esac
+}
+
+
+# out_lang_ext
+# ------------
+# Return the extension for $OUT_LANG.
+out_lang_ext ()
+{
+ case $out_lang in
+ dvipdf ) echo pdf;;
+ dvi | html | info | pdf | ps | text ) echo $out_lang;;
+ *) error 1 "invalid out_lang: $1";;
+ esac
+}
+
+
+## ------------------------- ##
+## TeX auxiliary functions. ##
+## ------------------------- ##
+
+# Save TEXINPUTS so we can construct a new TEXINPUTS path for each file.
+# Likewise for bibtex and makeindex.
+tex_envvars="BIBINPUTS BSTINPUTS DVIPSHEADERS INDEXSTYLE MFINPUTS MPINPUTS \
+TEXINPUTS TFMFONTS"
+for var in $tex_envvars; do
+ eval ${var}_orig=\$$var
+ export $var
+done
+
+
+# absolute_filenames TEX-PATH -> TEX-PATH
+# ---------------------------------------
+# Convert relative paths to absolute paths, so we can run in another
+# directory (e.g., in tidy build mode, or during the macro-support
+# detection). Prepend ".".
+absolute_filenames ()
+{
+ # Empty path components are meaningful to tex. We rewrite them as
+ # `EMPTY' so they don't get lost when we split on $path_sep.
+ # Hopefully no one will have an actual directory named EMPTY.
+ local replace_empty="-e 's/^$path_sep/EMPTY$path_sep/g' \
+ -e 's/$path_sep\$/${path_sep}EMPTY/g' \
+ -e 's/$path_sep$path_sep/${path_sep}EMPTY:/g'"
+ local res
+ res=`echo "$1" | eval $SED $replace_empty`
+ save_IFS=$IFS
+ IFS=$path_sep
+ set x $res; shift
+ res=.
+ for dir
+ do
+ case $dir in
+ EMPTY)
+ res=$res$path_sep
+ ;;
+ *)
+ if test -d "$dir"; then
+ res=$res$path_sep`absolute "$dir"`
+ else
+ # Even if $dir is not a directory, preserve it in the path.
+ # It might contain metacharacters that TeX will expand in
+ # turn, e.g., /some/path/{a,b,c}. This will not get the
+ # implicit absolutification of the path, but we can't help that.
+ res=$res$path_sep$dir
+ fi
+ ;;
+ esac
+ done
+ echo "$res"
+}
+
+
+# output_base_name FILE
+# ---------------------
+# The name of FILE, possibly renamed to satisfy --output.
+# FILE is local, there is no directory part.
+output_base_name ()
+{
+ case $oname in
+ '') echo "$1";;
+ *) local out_noext
+ out_noext=`noext "$oname"`
+ local file_ext
+ file_ext=`echo "$1" | $SED 's/^.*\.//'`
+ echo "$out_noext.$file_ext"
+ ;;
+ esac
+}
+
+
+# destdir
+# -------
+# Return the name of the directory where the output is expected.
+destdir ()
+{
+ case $oname in
+ '') echo "$orig_pwd";;
+ *) dirname "$oname";;
+ esac
+}
+
+
+# move_to_dest FILE...
+# --------------------
+# Move FILE to the place where the user expects it. Truly move it, that
+# is, it must not remain in its build location unless that is also the
+# output location. (Otherwise it might appear as an extra file in make
+# distcheck.)
+#
+# FILE can be the principal output (in which case -o directly applies), or
+# an auxiliary file with the same base name.
+move_to_dest ()
+{
+# echo "move_to_dest $*, tidy=$tidy, oname=$oname"
+
+ # If we built in place and have no output name, there is nothing to
+ # do, so just return.
+ case $tidy:$oname in
+ false:) return;;
+ esac
+
+ local destfile
+ local destdir
+ local destbase
+ local sourcedir
+ local sourcebase
+
+ for file
+ do
+ test -f "$file" \
+ || error 1 "no such file or directory: $file"
+ case $tidy:$oname in
+ true:) destdir=$orig_pwd
+ destfile=$destdir/$file;;
+ true:*) destfile=`output_base_name "$file"`
+ destdir=`dirname "$destfile"`;;
+ false:*) destfile=$oname
+ destdir=`dirname "$destfile"`;;
+ esac
+
+ # We want to compare the source location and the output location,
+ # and if they are different, do the move. But if they are the
+ # same, we must preserve the source. Since we can't assume
+ # stat(1) or test -ef is available, resort to comparing the
+ # directory names, canonicalized with pwd. We can't use cmp -s
+ # since the output file might not actually change from run to run;
+ # e.g., TeX DVI output is timestamped to only the nearest minute.
+ destdir=`cd "$destdir" && pwd`
+ destbase=`basename "$destfile"`
+
+ sourcedir=`dirname "$file"`
+ sourcedir=`cd "$sourcedir" && pwd`
+ sourcebase=`basename "$file"`
+
+ if test "$sourcedir/$sourcebase" != "$destdir/$destbase"; then
+ verbose "Moving $file to $destfile"
+ rm -f "$destfile"
+ mv "$file" "$destfile"
+ fi
+ done
+}
+
+
+## --------------------- ##
+## Managing xref files. ##
+## --------------------- ##
+
+# aux_file_p FILE
+# ---------------
+# Return with success if FILE is an aux file.
+aux_file_p ()
+{
+ test -f "$1" || return 1
+ case $1 in
+ *.aux) return 0;;
+ *) return 1;;
+ esac
+}
+
+# bibaux_file_p FILE
+# ------------------
+# Return with success if FILE is an aux file containing citation
+# requests.
+bibaux_file_p ()
+{
+ test -s "$1" || return 1
+ if (grep '^\\bibstyle[{]' "$1" \
+ && grep '^\\bibdata[{]' "$1" \
+ ## The following line is suspicious: fails when there
+ ## are citations in sub aux files. We need to be
+ ## smarter in this case.
+ ## && grep '^\\citation[{]' "$f"
+ ) >&6 2>&1;
+ then
+ return 0
+ fi
+ return 1
+}
+
+# index_file_p FILE
+# -----------------
+# Return with success if FILE is an index file.
+index_file_p ()
+{
+ test -f "$1" || return 1
+ case $in_lang:$latex2html:`out_lang_tex`:`$SED '1q' "$1"` in
+ # When working with TeX4HT, *.idx are created by LaTeX. They must
+ # be processed to produce *.4ix, *.4dx files. The *.4dx file is
+ # passed to makeindex to produce the *.ind file. This sequence is
+ # handled by run_index, so we are only interested in the *.idx
+ # files, which have each "\indexentry" preceded by a
+ # "\beforeentry".
+ latex:tex4ht:html:"\\beforeentry {"*) return 0;;
+
+ # When index.sty is used, there is a space before the brace.
+ latex:*:*:"\\indexentry{"*|latex:*:*:"\\indexentry {"*) return 0;;
+
+ texinfo:*:*:"\\entry{"*) return 0;;
+
+ *) return 1;;
+ esac
+}
+
+# xref_file_p FILE
+# ----------------
+# Return with success if FILE is an xref file (indexes, tables and lists).
+xref_file_p ()
+{
+ test -f "$1" || return 1
+ # If the file is not suitable to be an index or xref file, don't
+ # process it. It's suitable if the first character is a
+ # backslash or right quote or at, as long as the first line isn't
+ # \input texinfo.
+ case `$SED '1q' "$1"` in
+ "\\input texinfo"*) return 1;;
+ [\\''@]*) return 0;;
+ *) return 1;;
+ esac
+}
+
+
+# generated_files_get FILENAME-NOEXT [PREDICATE-FILTER]
+# -----------------------------------------------------
+# Return the list of files generated by the TeX compilation of FILENAME-NOEXT.
+generated_files_get ()
+{
+ local filter=true
+ if test -n "$2"; then
+ filter=$2
+ fi
+
+ # Gather the files created by TeX.
+ (
+ if test -f "$1.log"; then
+ $SED -n -e "s,^\\\\openout.* = \`\\(.*\\)'\\.,\\1,p" "$1.log"
+ fi
+ echo "$1.log"
+ ) |
+ # Depending on these files, infer outputs from other tools.
+ while read file; do
+ echo $file
+ case $in_lang in
+ texinfo)
+ # texindex: texinfo.cp -> texinfo.cps
+ if index_file_p $file; then
+ echo ${file}s
+ fi
+ ;;
+ latex)
+ if aux_file_p $file; then
+ # bibtex: *.aux -> *.bbl and *.blg.
+ echo $file | $SED 's/^\(.*\)\.aux$/\1.bbl/'
+ echo $file | $SED 's/^\(.*\)\.aux$/\1.blg/'
+ # -recorder: .fls
+ echo $file | $SED 's/^\(.*\)\.aux$/\1.fls/'
+ fi
+ ;;
+ esac
+ done |
+ # Filter existing files matching the criterion.
+ #
+ # With an input file name containing a space, this produces a
+ # "command not found" message (and filtering is ineffective).
+ # The situation with a newline is presumably even worse.
+ while read file; do
+ if $filter "$file"; then
+ echo $file
+ fi
+ done |
+ sort |
+ # Some files are opened several times, e.g., listings.sty's *.vrb.
+ uniq
+}
+
+
+# xref_files_save
+# ---------------
+# Save the xref files.
+xref_files_save ()
+{
+ # Save copies of auxiliary files for later comparison.
+ xref_files_orig=`generated_files_get "$in_noext" xref_file_p`
+ if test -n "$xref_files_orig"; then
+ verbose "Backing up xref files: $xref_files_orig"
+ # The following line improves `cp $xref_files_orig "$work_bak"'
+ # by preserving the directory parts. Think of
+ # cp chap1/main.aux chap2/main.aux $work_bak.
+ #
+ # Users may have, e.g., --keep-old-files. Don't let this interfere.
+ # (Don't use unset for the sake of ancient shells.)
+ TAR_OPTIONS=; export TAR_OPTIONS
+ tar cf - $xref_files_orig | (cd "$work_bak" && tar xf -)
+ fi
+}
+
+
+# xref_files_changed
+# ------------------
+# Whether the xref files were changed since the previous run.
+xref_files_changed ()
+{
+ # LaTeX (and the package changebar) report in the LOG file if it
+ # should be rerun. This is needed for files included from
+ # subdirs, since texi2dvi does not try to compare xref files in
+ # subdirs. Performing xref files test is still good since LaTeX
+ # does not report changes in xref files.
+ if grep "Rerun to get" "$in_noext.log" >&6 2>&1; then
+ return 0
+ fi
+ # biblatex report of whether rerunning is needed.
+ if grep "biblatex.*(re)run" "$in_noext.log" >&6 2>&1; then
+ return 0
+ fi
+
+ # If old and new lists don't have the same file list,
+ # then something has definitely changed.
+ xref_files_new=`generated_files_get "$in_noext" xref_file_p`
+ verbose "Original xref files = $xref_files_orig"
+ verbose "New xref files = $xref_files_new"
+ if test "x$xref_files_orig" != "x$xref_files_new"; then
+ return 0
+ fi
+
+ # Compare each file until we find a difference.
+ for this_file in $xref_files_new; do
+ verbose "Comparing xref file `echo $this_file | $SED 's|\./||g'` ..."
+ # cmp -s returns nonzero exit status if files differ.
+ if cmp -s "$this_file" "$work_bak/$this_file"; then :; else
+ verbose "xref file `echo $this_file | $SED 's|\./||g'` differed ..."
+ if $debug; then
+ diff -u "$work_bak/$this_file" "$this_file"
+ fi
+ return 0
+ fi
+ done
+
+ # No change.
+ return 1
+}
+
+
+
+## ----------------------- ##
+## Running the TeX suite. ##
+## ----------------------- ##
+
+
+
+# run_tex ()
+# ----------
+# Run TeX as "$tex $in_input", taking care of errors and logs.
+run_tex ()
+{
+ case $in_lang:$latex2html:`out_lang_tex` in
+ latex:*:dvi|latex:tex4ht:html)
+ tex=${LATEX:-latex};;
+ latex:*:pdf)
+ tex=${PDFLATEX:-pdflatex};;
+ texinfo:*:dvi)
+ # MetaPost also uses the TEX environment variable. If the user
+ # has set TEX=latex for that reason, don't bomb out.
+ case $TEX in
+ *latex) tex=tex;; # don't bother trying to find etex
+ *) tex=$TEX
+ esac;;
+ texinfo:*:pdf) tex=$PDFTEX;;
+
+ *) error 1 "$out_lang not supported for $in_lang";;
+ esac
+
+ # do the special catcode trick for ~ in filenames only for Texinfo,
+ # not LaTeX.
+ if test x"$in_lang" = xtexinfo && test $catcode_special = maybe; then
+ catcode_special=true
+ else
+ catcode_special=false
+ fi
+
+ # Beware of aux files in subdirectories that require the
+ # subdirectory to exist.
+ case $in_lang:$tidy in
+ latex:true)
+ $SED -n 's|^[ ]*\\include{\(.*\)/.*}.*|\1|p' "$in_input" |
+ sort -u |
+ while read d
+ do
+ ensure_dir "$work_build/$d"
+ done
+ ;;
+ esac
+
+ # Note that this will be used via an eval: quote properly.
+ local cmd="$tex"
+
+ # If possible, make TeX report error locations in GNU format.
+ if $line_error; then
+ if test "${tex_help:+set}" != set; then
+ # Go to a temporary directory to try --help, since old versions that
+ # don't accept --help will generate a texput.log.
+ tex_help_dir=$t2ddir/tex_help
+ ensure_dir "$tex_help_dir"
+ tex_help=`cd "$tex_help_dir" >&6 && $tex --help </dev/null 2>&1 || true`
+ fi
+ # The mk program and perhaps others want to parse TeX's
+ # original error messages.
+ case $tex_help in
+ *file-line-error*) cmd="$cmd --file-line-error";;
+ esac
+ fi
+
+ # Tell TeX about TCX file, if specified.
+ test -n "$translate_file" && cmd="$cmd --translate-file=$translate_file"
+
+ # Tell TeX to make source specials (for backtracking from output to
+ # source, given a sufficiently smart editor), if specified.
+ test -n "$src_specials" && cmd="$cmd $src_specials"
+
+ # Tell TeX to allow running external executables
+ test -n "$shell_escape" && cmd="$cmd $shell_escape"
+
+ # Tell TeX to be batch if requested.
+ if $batch; then
+ # \batchmode does not show terminal output at all, so we don't
+ # want that. And even in batch mode, TeX insists on having input
+ # from the user. Close its stdin to make it impossible.
+ cmd="$cmd </dev/null '${escape}nonstopmode'"
+ fi
+
+ # we'd like to handle arbitrary input file names, especially
+ # foo~bar/a~b.tex, since Debian likes ~ characters.
+ if $catcode_special; then
+ # $normaltilde is just to reduce line length in this source file.
+ # The idea is to define \normaltilde as a catcode other ~ character,
+ # then make the active ~ be equivalent to that, instead of the plain
+ # TeX tie. Then when the active ~ appears in the filename, it will
+ # be expanded to itself, as far as \input will see. (This is the
+ # same thing that texinfo.tex does in general, BTW.)
+ normaltilde="${escape}catcode126=12 ${escape}def${escape}normaltilde{~}"
+ cmd="$cmd '$normaltilde${escape}catcode126=13 ${escape}let~\normaltilde '"
+ fi
+ # Other special (non-active) characters could be supported by
+ # resetting their catcodes to other on the command line and changing
+ # texinfo.tex to initialize everything to plain catcodes. Maybe someday.
+
+ # append the \input command.
+ cmd="$cmd '${escape}input'"
+
+ # TeX's \input does not (easily or reliably) support whitespace
+ # characters or other special characters in file names. Our intensive
+ # use of absolute file names makes this worse: the enclosing directory
+ # names may include white spaces. Improve the situation using a
+ # symbolic link to the filename in the current directory, in tidy mode
+ # only. Do not alter in_input.
+ #
+ # The filename is almost always tokenized using plain TeX conventions
+ # (the exception would be if the user made a texinfo.fmt file). Not
+ # all the plain TeX special characters cause trouble, but there's no
+ # harm in making the link.
+ #
+ case $tidy:`func_dirname "$in_input"` in
+ true:*["$space$tab$newline\"#\$%\\^_{}~"]*)
+ _run_tex_file_name=`basename "$in_input"`
+ if test ! -f "$_run_tex_file_name"; then
+ # It might not be a file, clear it.
+ run rm -f "$_run_tex_file_name"
+ run ln -s "$in_input"
+ fi
+ cmd="$cmd '$_run_tex_file_name'"
+ ;;
+
+ *)
+ cmd="$cmd '$in_input'"
+ ;;
+ esac
+
+ verbose "$0: Running $cmd ..."
+ if eval "$cmd" >&5; then
+ case $out_lang in
+ dvi | pdf ) move_to_dest "$in_noext.$out_lang";;
+ esac
+ else
+ error 1 "$tex exited with bad status, quitting."
+ fi
+}
+
+# run_bibtex ()
+# -------------
+# Run bibtex on (or biber) current file.
+# - If its input (AUX) exists.
+# - If some citations are missing (LOG contains `Citation').
+# or the LOG complains of a missing .bbl
+#
+# Don't try to be too smart:
+# 1. Running bibtex only if the bbl file exists and is older than
+# the LaTeX file is wrong, since the document might include files
+# that have changed.
+#
+# 3. Because there can be several AUX (if there are \include's),
+# but a single LOG, looking for missing citations in LOG is
+# easier, though we take the risk of matching false messages.
+run_bibtex ()
+{
+ case $in_lang in
+ latex) bibtex=${BIBTEX:-bibtex};;
+ texinfo) return;;
+ esac
+
+ # "Citation undefined" is for LaTeX, "Undefined citation" for btxmac.tex.
+ # The no .aux && \bibdata test is also for btxmac, in case it was the
+ # first run of a bibtex-using document. Otherwise, it's possible that
+ # bibtex would never be run.
+ if test -r "$in_noext.aux" \
+ && test -r "$in_noext.log" \
+ && ( (grep 'Warning:.*Citation.*undefined' "$in_noext.log" \
+ || grep '.*Undefined citation' "$in_noext.log" \
+ || grep 'No file .*\.bbl\.' "$in_noext.log") \
+ || (grep 'No \.aux file' "$in_noext.log" \
+ && grep '^\\bibdata' "$in_noext.aux") ) \
+ >&6 2>&1; \
+ then
+ bibtex_aux=`generated_files_get "$in_noext" bibaux_file_p`
+ for f in $bibtex_aux; do
+ run $bibtex "$f"
+ done
+ fi
+
+ # biber(+biblatex) check.
+ if test -r "$in_noext.bcf" \
+ && grep '</bcf:controlfile>' "$in_noext.bcf" >/dev/null; then
+ run ${BIBER:-biber} "$in_noext"
+ fi
+}
+
+# run_index ()
+# ------------
+# Run texindex (or makeindex or texindy) on current index files. If
+# they already exist, and after running TeX a first time the index
+# files don't change, then there's no reason to run TeX again. But we
+# won't know that if the index files are out of date or nonexistent.
+run_index ()
+{
+ local index_files
+ index_files=`generated_files_get $in_noext index_file_p`
+ test -n "$index_files" \
+ || return 0
+
+ : ${MAKEINDEX:=makeindex}
+ : ${TEXINDEX:=texindex}
+ : ${TEXINDY:=texindy}
+
+ local index_file
+ local index_noext
+ case $in_lang:$latex2html:`out_lang_tex` in
+ latex:tex4ht:html)
+ for index_file in $index_files
+ do
+ index_noext=`noext "$index_file"`
+ run tex \
+ '\def\filename{{'"$index_noext"'}{idx}{4dx}{ind}}
+ \input idxmake.4ht'
+ run $MAKEINDEX -o $index_noext.ind $index_noext.4dx
+ done
+ ;;
+
+ latex:*)
+ if $TEXINDY --version >&6 2>&1; then
+ run $TEXINDY $index_files
+ else
+ run $MAKEINDEX $index_files
+ fi
+ ;;
+
+ texinfo:*)
+ run $TEXINDEX $index_files
+ ;;
+ esac
+}
+
+
+# run_tex4ht ()
+# -------------
+# Run the last two phases of TeX4HT: tex4ht extracts the HTML from the
+# instrumented DVI file, and t4ht converts the figures and installs
+# the files when given -d.
+#
+# Because knowing exactly which files are created is complex (in
+# addition the names are not simple to compute), which makes it
+# difficult to install the output files in a second step, it is much
+# simpler to install directly the output files.
+run_tex4ht ()
+{
+ case $in_lang:$latex2html:`out_lang_tex` in
+ latex:tex4ht:html)
+ : ${TEX4HT:=tex4ht} ${T4HT:=t4ht}
+ run "$TEX4HT" "-f/$in_noext"
+ # Do not remove the / after the destdir.
+ run "$T4HT" "-d`destdir`/" "-f/$in_noext"
+ ;;
+ esac
+}
+
+
+# run_thumbpdf ()
+# ---------------
+run_thumbpdf ()
+{
+ if test `out_lang_tex` = pdf \
+ && test -r "$in_noext.log" \
+ && grep 'thumbpdf\.sty' "$in_noext.log" >&6 2>&1; \
+ then
+ thumbpdf=${THUMBPDF_CMD:-thumbpdf}
+ thumbcmd="$thumbpdf $in_dir/$in_noext"
+ verbose "Running $thumbcmd ..."
+ if $thumbcmd >&5; then
+ run_tex
+ else
+ report "$thumbpdf exited with bad status." \
+ "Ignoring its output."
+ fi
+ fi
+}
+
+
+# run_dvipdf FILE.dvi
+# -------------------
+# Convert FILE.dvi to FILE.pdf.
+run_dvipdf ()
+{
+ # Find which dvi->pdf program is available.
+ if test -z "$dvipdf"; then
+ for i in "$DVIPDF" dvipdfmx dvipdfm dvipdf dvi2pdf dvitopdf; do
+ if findprog $i; then
+ dvipdf=$i
+ fi
+ done
+ fi
+ # These tools have varying interfaces, some 'input output', others
+ # 'input -o output'. They all seem to accept 'input' only,
+ # outputting using the expected file name.
+ run $dvipdf "$1"
+ if test ! -f `echo "$1" | $SED -e 's/\.dvi$/.pdf/'`; then
+ error 1 "cannot find output file"
+ fi
+}
+
+# run_tex_suite ()
+# ----------------
+# Run the TeX tools until a fix point is reached.
+run_tex_suite ()
+{
+ # Move to the working directory.
+ if $tidy; then
+ verbose "cd $work_build"
+ cd "$work_build" || exit 1
+ fi
+
+ # Count the number of cycles.
+ local cycle=0
+
+ while :; do
+ # check for probably LaTeX loop (e.g. varioref)
+ if test $cycle -eq "$max_iters"; then
+ error 0 "Maximum of $max_iters cycles exceeded"
+ break
+ fi
-Copyright (C) 2003 Free Software Foundation, Inc.
-There is NO warranty. You may redistribute this software
-under the terms of the GNU General Public License.
-For more information about these matters, see the files named COPYING."
+ # report progress
+ cycle=`expr $cycle + 1`
+ verbose "Cycle $cycle for $command_line_filename"
-usage="Usage: $program [OPTION]... FILE...
+ xref_files_save
-Run each Texinfo or LaTeX FILE through TeX in turn until all
-cross-references are resolved, building all indices. The directory
-containing each FILE is searched for included files. The suffix of FILE
-is used to determine its language (LaTeX or Texinfo).
+ # We run bibtex first, because it's more likely for the indexes
+ # to change after bibtex is run than the reverse, though either
+ # would be rare.
+ run_bibtex
+ run_index
+ run_core_conversion
-Makeinfo is used to perform Texinfo macro expansion before running TeX
-when needed.
+ xref_files_changed || break
+ done
-Operation modes:
- -b, --batch no interaction
- -c, --clean remove all auxiliary files
- -D, --debug turn on shell debugging (set -x)
- -h, --help display this help and exit successfully
- -o, --output=OFILE leave output in OFILE (implies --clean);
- Only one input FILE may be specified in this case
- -q, --quiet no output unless errors (implies --batch)
- -s, --silent same as --quiet
- -v, --version display version information and exit successfully
- -V, --verbose report on what is done
+ # If we were using thumbpdf and producing PDF, then run thumbpdf
+ # and TeX one last time.
+ run_thumbpdf
-TeX tuning:
- -@ use @input instead of \input; for preloaded Texinfo
- -e, -E, --expand force macro expansion using makeinfo
- -I DIR search DIR for Texinfo files
- -l, --language=LANG specify the LANG of FILE (LaTeX or Texinfo)
- -p, --pdf use pdftex or pdflatex for processing
- -t, --texinfo=CMD insert CMD after @setfilename in copy of input file
- multiple values accumulate
-
-The values of the BIBTEX, LATEX (or PDFLATEX), MAKEINDEX, MAKEINFO,
-TEX (or PDFTEX), and TEXINDEX environment variables are used to run
-those commands, if they are set.
-
-Email bug reports to <bug-texinfo@gnu.org>,
-general questions and discussion to <help-texinfo@gnu.org>.
-Texinfo home page: http://www.gnu.org/software/texinfo/"
+ # If we are using tex4ht, call it.
+ run_tex4ht
-# Initialize variables for option overriding and otherwise.
-# Don't use `unset' since old bourne shells don't have this command.
-# Instead, assign them an empty value.
-batch=false # eval for batch mode
-clean=
-debug=
-escape='\'
-expand= # t for expansion via makeinfo
-miincludes= # makeinfo include path
-oformat=dvi
-oname= # --output
-quiet= # by default let the tools' message be displayed
-set_language=
-textra=
-tmpdir=${TMPDIR:-/tmp}/t2d$$ # avoid collisions on 8.3 filesystems.
-txincludes= # TEXINPUTS extensions, with trailing colon
-txiprereq=19990129 # minimum texinfo.tex version to have macro expansion
-verbose=false # echo for verbose mode
+ # Install the result if we didn't already (i.e., if the output is
+ # dvipdf or ps).
+ case $latex2html:$out_lang in
+ *:dvipdf)
+ run_dvipdf "$in_noext.`out_lang_tex`"
+ move_to_dest "$in_noext.`out_lang_ext`"
+ ;;
+ *:ps)
+ : ${DVIPS:=dvips}
+ run $DVIPS -o "$in_noext.`out_lang_ext`" "$in_noext.`out_lang_tex`"
+ move_to_dest "$in_noext.`out_lang_ext`"
+ ;;
+ esac
-orig_pwd=`pwd`
+ cd_orig
+}
-# Systems which define $COMSPEC or $ComSpec use semicolons to separate
-# directories in TEXINPUTS.
-if test -n "$COMSPEC$ComSpec"; then
- path_sep=";"
-else
- path_sep=":"
-fi
+## -------------------------------- ##
+## TeX processing auxiliary tools. ##
+## -------------------------------- ##
-# Pacify verbose cds.
-CDPATH=${ZSH_VERSION+.}$path_sep
-# In case someone crazy insists on using grep -E.
-: ${EGREP=egrep}
+# A sed script that preprocesses Texinfo sources in order to keep the
+# iftex sections only. We want to remove non-TeX sections, and comment
+# (with `@c _texi2dvi') TeX sections so that makeinfo does not try to
+# parse them. Nevertheless, while commenting TeX sections, don't
+# comment @macro/@end macro so that makeinfo does propagate them.
+# Unfortunately makeinfo --iftex --no-ifinfo doesn't work well enough
+# (yet), makeinfo can't parse the TeX commands, so work around with sed.
+#
+# We assume that `@c _texi2dvi' starting a line is not present in the
+# document.
+#
+comment_iftex=\
+'/^@tex/,/^@end tex/{
+ s/^/@c _texi2dvi/
+}
+/^@iftex/,/^@end iftex/{
+ s/^/@c _texi2dvi/
+ /^@c _texi2dvi@macro/,/^@c _texi2dvi@end macro/{
+ s/^@c _texi2dvi//
+ }
+}
+/^@ifnottex/,/^@end ifnottex/{
+ s/^/@c (_texi2dvi)/
+}
+/^@ifinfo/,/^@end ifinfo/{
+ /^@node/p
+ /^@menu/,/^@end menu/p
+ t
+ s/^/@c (_texi2dvi)/
+}
+s/^@ifnotinfo/@c _texi2dvi@ifnotinfo/
+s/^@end ifnotinfo/@c _texi2dvi@end ifnotinfo/'
+
+# Uncommenting is simpler: remove any leading `@c texi2dvi'; repeated
+# copies can sneak in via macro invocations.
+uncomment_iftex='s/^@c _texi2dvi\(@c _texi2dvi\)*//'
+
+
+# run_makeinfo ()
+# ---------------
+# Expand macro commands in the original source file using Makeinfo.
+# Always use `end' footnote style, since the `separate' style
+# generates different output (arguably this is a bug in -E). Discard
+# main info output, the user asked to run TeX, not makeinfo.
+run_makeinfo ()
+{
+ test $in_lang = texinfo \
+ || return 0
+
+ # Unless required by the user, makeinfo expansion is wanted only
+ # if texinfo.tex is too old.
+ if $expand; then
+ makeinfo=${MAKEINFO:-makeinfo}
+ else
+ # Check if texinfo.tex performs macro expansion by looking for
+ # its version. The version is a date of the form YEAR-MO-DA.
+ # We don't need to use [0-9] to match the digits since anyway
+ # the comparison with $txiprereq, a number, will fail with non-digits.
+ # Run in a temporary directory to avoid leaving files.
+ version_test_dir=$t2ddir/version_test
+ ensure_dir "$version_test_dir"
+ if (
+ cd "$version_test_dir"
+ echo '\input texinfo.tex @bye' >txiversion.tex
+ # Be sure that if tex wants to fail, it is not interactive:
+ # close stdin.
+ $TEX txiversion.tex </dev/null >txiversion.out 2>txiversion.err
+ ); then :; else
+ report "texinfo.tex appears to be broken.
+This may be due to the environment variable TEX set to something
+other than (plain) tex, a corrupt texinfo.tex file, or
+to tex itself simply not working."
+ cat "$version_test_dir/txiversion.out"
+ cat "$version_test_dir/txiversion.err" >&2
+ error 1 "quitting."
+ fi
+ eval `$SED -n 's/^.*\[\(.*\)version \(....\)-\(..\)-\(..\).*$/txiformat=\1 txiversion="\2\3\4"/p' "$version_test_dir/txiversion.out"`
+ verbose "texinfo.tex preloaded as \`$txiformat', version is \`$txiversion' ..."
+ if test "$txiprereq" -le "$txiversion" >&6 2>&1; then
+ makeinfo=
+ else
+ makeinfo=${MAKEINFO:-makeinfo}
+ fi
+ # If TeX is preloaded, offer the user this convenience:
+ if test "$txiformat" = Texinfo; then
+ escape=@
+ fi
+ fi
+
+ if test -n "$makeinfo"; then
+ # in_src: the file with macros expanded.
+ # Use the same basename to generate the same aux file names.
+ work_src=$workdir/src
+ ensure_dir "$work_src"
+ in_src=$work_src/$in_base
+ local miincludes
+ miincludes=`list_prefix includes -I`
+ verbose "Macro-expanding $command_line_filename to $in_src ..."
+ # eval $makeinfo because it might be defined as something complex
+ # (running missing) and then we end up with things like '"-I"',
+ # and "-I" (including the quotes) is not an option name. This
+ # happens with gettext 0.14.5, at least.
+ $SED "$comment_iftex" "$command_line_filename" \
+ | eval $makeinfo --footnote-style=end -I "$in_dir" $miincludes \
+ -o /dev/null --macro-expand=- \
+ | $SED "$uncomment_iftex" >"$in_src"
+ # Continue only if everything succeeded.
+ if test $? -ne 0 \
+ || test ! -r "$in_src"; then
+ verbose "Expansion failed, ignored...";
+ else
+ in_input=$in_src
+ fi
+ fi
+}
+
+# insert_commands ()
+# ------------------
+# Used most commonly for @finalout, @smallbook, etc.
+insert_commands ()
+{
+ if test -n "$textra"; then
+ # _xtr. The file with the user's extra commands.
+ work_xtr=$workdir/xtr
+ in_xtr=$work_xtr/$in_base
+ ensure_dir "$work_xtr"
+ verbose "Inserting extra commands: $textra"
+ local textra_cmd
+ case $in_lang in
+ latex) textra_cmd=1i;;
+ texinfo) textra_cmd='/^@setfilename/a';;
+ *) error 1 "internal error, unknown language: $in_lang";;
+ esac
+ $SED "$textra_cmd\\
+$textra" "$in_input" >"$in_xtr"
+ in_input=$in_xtr
+ fi
-# Save this so we can construct a new TEXINPUTS path for each file.
-TEXINPUTS_orig="$TEXINPUTS"
-# Unfortunately makeindex does not read TEXINPUTS.
-INDEXSTYLE_orig="$INDEXSTYLE"
-export TEXINPUTS INDEXSTYLE
+ case $in_lang:$latex2html:`out_lang_tex` in
+ latex:tex4ht:html)
+ # _tex4ht. The file with the added \usepackage{tex4ht}.
+ work_tex4ht=$workdir/tex4ht
+ in_tex4ht=$work_tex4ht/$in_base
+ ensure_dir "$work_tex4ht"
+ verbose "Inserting \\usepackage{tex4ht}"
+ perl -pe 's<\\documentclass(?:\[.*\])?{.*}>
+ <$&\\usepackage[xhtml]{tex4ht}>' \
+ "$in_input" >"$in_tex4ht"
+ in_input=$in_tex4ht
+ ;;
+ esac
+}
+
+# compute_language FILENAME
+# -------------------------
+# Return the short string describing the language in which FILENAME
+# is written: `texinfo' or `latex'.
+compute_language ()
+{
+ # If the user explicitly specified the language, use that.
+ # Otherwise, if the first line is \input texinfo, assume it's texinfo.
+ # Otherwise, guess from the file extension.
+ if test -n "$set_language"; then
+ echo $set_language
+ elif $SED 1q "$1" | grep 'input texinfo' >&6; then
+ echo texinfo
+ else
+ # Get the type of the file (latex or texinfo) from the given language
+ # we just guessed, or from the file extension if not set yet.
+ case $1 in
+ *.ltx | *.tex | *.drv | *.dtx) echo latex;;
+ *) echo texinfo;;
+ esac
+ fi
+}
+
+
+# run_hevea (MODE)
+# ----------------
+# Convert to HTML/INFO/TEXT.
+#
+# Don't pass `-noiso' to hevea: it's useless in HTML since anyway the
+# charset is set to latin1, and troublesome in other modes since
+# accented characters loose their accents.
+#
+# Don't pass `-o DEST' to hevea because in that case it leaves all its
+# auxiliary files there too... Too bad, because it means we will need
+# to handle images some day.
+run_hevea ()
+{
+ local hevea="${HEVEA:-hevea}"
+ local run_hevea="$hevea"
+
+ case $1 in
+ html) ;;
+ text|info) run_hevea="$run_hevea -$1";;
+ *) error 1 "run_hevea: invalid argument: $1";;
+ esac
+
+ # Compiling to the tmp directory enables to preserve a previous
+ # successful compilation.
+ run_hevea="$run_hevea -fix -O -o '$out_base'"
+ run_hevea="$run_hevea `list_prefix includes -I` -I '$orig_pwd' "
+ run_hevea="$run_hevea '$in_input'"
+
+ if $debug; then
+ run_hevea="$run_hevea -v -v"
+ fi
+
+ verbose "running $run_hevea"
+ if eval "$run_hevea" >&5; then
+ # hevea leaves trailing white spaces, this is annoying.
+ case $1 in text|info)
+ perl -pi -e 's/[ \t]+$//g' "$out_base"*;;
+ esac
+ case $1 in
+ html|text) move_to_dest "$out_base";;
+ info) # There can be foo.info-1, foo.info-2 etc.
+ move_to_dest "$out_base"*;;
+ esac
+ else
+ error 1 "$hevea exited with bad status, quitting."
+ fi
+}
+
+
+# run_core_conversion ()
+# ----------------------
+# Run the TeX (or HeVeA).
+run_core_conversion ()
+{
+ case $in_lang:$latex2html:`out_lang_tex` in
+ *:dvi|*:pdf|latex:tex4ht:html)
+ run_tex;;
+ latex:*:html|latex:*:text|latex:*:info)
+ run_hevea $out_lang;;
+ *)
+ error 1 "invalid input/output combination: $in_lang/$out_lang";;
+ esac
+}
+
+
+# compile ()
+# ----------
+# Run the full compilation chain, from pre-processing to installation
+# of the output at its expected location.
+compile ()
+{
+ # Source file might include additional sources.
+ # We want `.:$orig_pwd' before anything else. (We'll add `.:' later
+ # after all other directories have been turned into absolute paths.)
+ # `.' goes first to ensure that any old .aux, .cps,
+ # etc. files in ${directory} don't get used in preference to fresher
+ # files in `.'. Include orig_pwd in case we are in clean build mode, where
+ # we have cd'd to a temp directory.
+ common="$orig_pwd$path_sep$in_dir$path_sep"
+ #
+ # If we have any includes, put those at the end.
+ # Keep a final path_sep to get the default (system) TeX directories included.
+ txincludes=`list_infix includes $path_sep`
+ test -n "$txincludes" && common="$common$txincludes$path_sep"
+ #
+ for var in $tex_envvars; do
+ eval val="\$common\$${var}_orig"
+ # Convert relative paths to absolute paths, so we can run in another
+ # directory (e.g., in clean build mode, or during the macro-support
+ # detection). ".:" is added here.
+ val=`absolute_filenames "$val"`
+ eval $var="\"$val\""
+ export $var
+ eval verbose \"$var=\'\$${var}\'\"
+ done
+
+ # --expand
+ run_makeinfo
+
+ # --command, --texinfo
+ insert_commands
+
+ # Run until a fix point is reached.
+ run_tex_suite
+}
+
+
+# remove FILES
+# ------------
+remove ()
+{
+ verbose "Removing" "$@"
+ rm -rf "$@"
+}
+
+
+# mostly_clean
+# ------------
+# Remove auxiliary files and directories. Changes the current directory.
+mostly_clean ()
+{
+ cd_orig
+ set X "$t2ddir"
+ shift
+ $tidy || {
+ local log="$work_build/$in_noext.log"
+ set X ${1+"$@"} "$log" `generated_files_get "$work_build/$in_noext"`
+ shift
+ }
+ remove ${1+"$@"}
+}
+
+
+# cleanup ()
+# ----------
+# Remove what should be removed according to options.
+# Called at the end of each compilation cycle, and at the end of
+# the script. Changes the current directory.
+cleanup ()
+{
+ case $build_mode in
+ local) cd_orig; remove "$t2ddir";;
+ clean) mostly_clean;;
+ tidy) ;;
+ esac
+}
+
+
+
+## ---------------------- ##
+## Command line parsing. ##
+## ---------------------- ##
# Push a token among the arguments that will be used to notice when we
# ended options/arguments parsing.
# Handle --option=value by splitting apart and putting back on argv.
case "$1" in
--*=*)
- opt=`echo "$1" | sed -e 's/=.*//'`
- val=`echo "$1" | sed -e 's/[^=]*=//'`
+ opt=`echo "$1" | $SED -e 's/=.*//'`
+ val=`echo "$1" | $SED -e 's/[^=]*=//'`
shift
set dummy "$opt" "$val" ${1+"$@"}; shift
;;
esac
- # This recognizes --quark as --quiet. So what.
case "$1" in
-@ ) escape=@;;
+ -~ ) catcode_special=false;;
# Silently and without documentation accept -b and --b[atch] as synonyms.
- -b | --b*) batch=eval;;
- -q | -s | --q* | --s*) quiet=t; batch=eval;;
- -c | --c*) clean=t;;
- -D | --d*) debug=t;;
- -e | -E | --e*) expand=t;;
- -h | --h*) echo "$usage"; exit 0;;
- -I | --I*)
+ -b | --batch) batch=true;;
+ --build) shift; build_mode=$1;;
+ --build-dir) shift; build_dir=$1; build_mode=tidy;;
+ -c | --clean) build_mode=clean;;
+ -D | --debug) debug=true;;
+ -e | -E | --expand) expand=true;;
+ -h | --help) usage;;
+ -I) shift; list_concat_dirs includes "$1";;
+ -l | --lang | --language) shift; set_language=$1;;
+ --mostly-clean) action=mostly-clean;;
+ --no-line-error) line_error=false;;
+ --max-iterations) shift; max_iters=$1;;
+ -o | --out | --output)
shift
- miincludes="$miincludes -I $1"
- txincludes="$txincludes$1$path_sep"
- ;;
- -l | --l*) shift; set_language=$1;;
- -o | --o*)
- shift
- clean=t
- case "$1" in
- /* | ?:/*) oname=$1;;
- *) oname="$orig_pwd/$1";;
- esac;;
- -p | --p*) oformat=pdf;;
- -t | --t*) shift; textra="$textra\\
-$1";;
- -v | --vers*) echo "$version"; exit 0;;
- -V | --verb*) verbose=echo;;
+ # Make it absolute, just in case we also have --clean, or whatever.
+ oname=`absolute "$1"`;;
+
+ # Output formats.
+ -O|--output-format) shift; out_lang_set "$1";;
+ --dvi|--dvipdf|--html|--info|--pdf|--ps|--text)
+ out_lang_set `echo "x$1" | $SED 's/^x--//'`;;
+
+ -p) out_lang_set pdf;;
+ -q | -s | --quiet | --silent) quiet=true; batch=true;;
+ --src-specials) src_specials=--src-specials;;
+ --shell-escape) shell_escape=--shell-escape;;
+ --tex4ht) latex2html=tex4ht;;
+ -t | --texinfo | --command ) shift; textra="$textra\\
+"`echo "$1" | $SED 's/\\\\/\\\\\\\\/g'`;;
+ --translate-file ) shift; translate_file="$1";;
+ --tidy) build_mode=tidy;;
+ -v | --vers*) version;;
+ -V | --verb*) verb=true;;
--) # What remains are not options.
shift
while test x"$1" != x"$arg_sep"; do
done
break;;
-*)
- echo "$0: Unknown or ambiguous option \`$1'." >&2
- echo "$0: Try \`--help' for more information." >&2
- exit 1;;
+ error 1 "Unknown or ambiguous option \`$1'." \
+ "Try \`--help' for more information."
+ ;;
*) set dummy ${1+"$@"} "$1"; shift;;
esac
shift
# Pop the token
shift
+# $tidy: compile in a t2d directory.
+# $clean: remove all the aux files.
+case $build_mode in
+ local) clean=false; tidy=false;;
+ tidy) clean=false; tidy=true;;
+ clean) clean=true; tidy=true;;
+ *) error 1 "invalid build mode: $build_mode";;
+esac
+
# Interpret remaining command line args as filenames.
case $# in
0)
- echo "$0: Missing file arguments." >&2
- echo "$0: Try \`--help' for more information." >&2
- exit 2
+ error 2 "Missing file arguments." "Try \`--help' for more information."
;;
1) ;;
*)
if test -n "$oname"; then
- echo "$0: Can't use option \`--output' with more than one argument." >&2
- exit 2
+ error 2 "Can't use option \`--output' with more than one argument."
fi
;;
esac
-# Prepare the temporary directory. Remove it at exit, unless debugging.
-if test -z "$debug"; then
- trap "cd / && rm -rf $tmpdir" 0 1 2 15
-fi
-# Create the temporary directory with strict rights
-(umask 077 && mkdir $tmpdir) || exit 1
+# We can't do much without tex.
+#
+if findprog ${TEX:-tex}; then :; else cat <<EOM
+You don't have a working TeX binary (${TEX:-tex}) installed anywhere in
+your PATH, and texi2dvi cannot proceed without one. If you want to use
+this script, you'll need to install TeX (if you don't have it) or change
+your PATH or TEX environment variable (if you do). See the --help
+output for more details.
-# Prepare the tools we might need. This may be extra work in some
-# cases, but improves the readibility of the script.
-utildir=$tmpdir/utils
-mkdir $utildir || exit 1
+For information about obtaining TeX, please see http://tug.org/texlive,
+or do a web search for TeX and your operating system or distro.
+EOM
+ exit 1
+fi
-# A sed script that preprocesses Texinfo sources in order to keep the
-# iftex sections only. We want to remove non TeX sections, and
-# comment (with `@c texi2dvi') TeX sections so that makeinfo does not
-# try to parse them. Nevertheless, while commenting TeX sections,
-# don't comment @macro/@end macro so that makeinfo does propagate
-# them. Unfortunately makeinfo --iftex --no-ifhtml --no-ifinfo
-# doesn't work well enough (yet) to use that, so work around with sed.
-comment_iftex_sed=$utildir/comment.sed
-cat <<EOF >$comment_iftex_sed
-/^@tex/,/^@end tex/{
- s/^/@c texi2dvi/
-}
-/^@iftex/,/^@end iftex/{
- s/^/@c texi2dvi/
- /^@c texi2dvi@macro/,/^@c texi2dvi@end macro/{
- s/^@c texi2dvi//
- }
-}
-/^@html/,/^@end html/{
- s/^/@c (texi2dvi)/
-}
-/^@ifhtml/,/^@end ifhtml/{
- s/^/@c (texi2dvi)/
-}
-/^@ifnottex/,/^@end ifnottex/{
- s/^/@c (texi2dvi)/
-}
-/^@ifinfo/,/^@end ifinfo/{
- /^@node/p
- /^@menu/,/^@end menu/p
- t
- s/^/@c (texi2dvi)/
-}
-s/^@ifnotinfo/@c texi2dvi@ifnotinfo/
-s/^@end ifnotinfo/@c texi2dvi@end ifnotinfo/
-EOF
-# Uncommenting is simple: Remove any leading `@c texi2dvi'.
-uncomment_iftex_sed=$utildir/uncomment.sed
-cat <<EOF >$uncomment_iftex_sed
-s/^@c texi2dvi//
-EOF
-# A shell script that computes the list of xref files.
-# Takes the filename (without extension) of which we look for xref
-# files as argument. The index files must be reported last.
-get_xref_files=$utildir/get_xref.sh
-cat <<\EOF >$get_xref_files
-#! /bin/sh
+# We want to use etex (or pdftex) if they are available, and the user
+# didn't explicitly specify. We don't check for elatex and pdfelatex
+# because (as of 2003), the LaTeX team has asked that new distributions
+# use etex by default anyway.
+#
+# End up with the TEX and PDFTEX variables set to what we are going to use.
+if test -z "$TEX"; then
+ if findprog etex; then TEX=etex; else TEX=tex; fi
+fi
+#
+if test -z "$PDFTEX"; then
+ if findprog pdfetex; then PDFTEX=pdfetex; else PDFTEX=pdftex; fi
+fi
-# Get list of xref files (indexes, tables and lists).
-# Find all files having root filename with a two-letter extension,
-# saves the ones that are really Texinfo-related files. .?o? catches
-# many files: .toc, .log, LaTeX tables and lists, FiXme's .lox, maybe more.
-for this_file in "$1".?o? "$1".aux "$1".?? "$1".idx; do
- # If file is empty, skip it.
- test -s "$this_file" || continue
- # If the file is not suitable to be an index or xref file, don't
- # process it. The file can't be if its first character is not a
- # backslash or single quote.
- first_character=`sed -n '1s/^\(.\).*$/\1/p;q' $this_file`
- if test "x$first_character" = "x\\" \
- || test "x$first_character" = "x'"; then
- xref_files="$xref_files ./$this_file"
- fi
-done
-echo "$xref_files"
-EOF
-chmod 500 $get_xref_files
# File descriptor usage:
# 0 standard input
# 3 some systems may open it to /dev/tty
# 4 used on the Kubota Titan
# 5 tools output (turned off by --quiet)
+# 6 tracing/debugging (set -x output, etc.)
+
-# Tools' output. If quiet, discard, else redirect to the message flow.
-if test "$quiet" = t; then
+# Main tools' output (TeX, etc.) that TeX users are used to seeing.
+#
+# If quiet, discard, else redirect to the message flow.
+if $quiet; then
exec 5>/dev/null
else
exec 5>&1
fi
-# Enable tracing
-test "$debug" = t && set -x
+
+# Enable tracing, and auxiliary tools output.
+#
+# This fd should be used where you'd typically use /dev/null to throw
+# output away. But sometimes it is convenient to see that output (e.g.,
+# from a grep) to aid debugging. Especially debugging at distance, via
+# the user.
+#
+if $debug; then
+ exec 6>&1
+ set -vx
+else
+ exec 6>/dev/null
+fi
# \f
-# TeXify files.
-for command_line_filename in ${1+"$@"}; do
- $verbose "Processing $command_line_filename ..."
+# input_file_name_decode
+# ----------------------
+# Decode COMMAND_LINE_FILENAME, and compute:
+# - COMMAND_LINE_FILENAME clean of TeX commands
+# - IN_DIR
+# The directory to the input file, possibly absolute if needed.
+# - IN_DIR_ABS
+# The absolute directory of the input file.
+# - IN_BASE
+# The input file base name (no directory part).
+# - IN_NOEXT
+# The input file name without extensions (nor directory part).
+# - IN_INPUT
+# Defaults to COMMAND_LINE_FILENAME, but might change if the
+# input is preprocessed. With directory, possibly absolute.
+input_file_name_decode ()
+{
+ # See if we are run from within AUC-Tex, in which case we are
+ # passed `\input{FOO.tex}' or even `\nonstopmode\input{FOO.tex}'.
+ case $command_line_filename in
+ *\\nonstopmode*)
+ batch=true;;
+ esac
+ case $command_line_filename in
+ *\\input{*}*)
+ # Let AUC-TeX error parser deal with line numbers.
+ line_error=false
+ command_line_filename=`\
+ expr X"$command_line_filename" : X'.*input{\([^}]*\)}'`
+ ;;
+ esac
# If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
# prepend `./' in order to avoid that the tools take it as an option.
- echo "$command_line_filename" | $EGREP '^(/|[A-z]:/)' >/dev/null \
+ echo "$command_line_filename" | LC_ALL=C $EGREP '^(/|[A-Za-z]:/)' >&6 \
|| command_line_filename="./$command_line_filename"
# See if the file exists. If it doesn't we're in trouble since, even
# though the user may be able to reenter a valid filename at the tex
# prompt (assuming they're attending the terminal), this script won't
# be able to find the right xref files and so forth.
- if test ! -r "$command_line_filename"; then
- echo "$0: Could not read $command_line_filename, skipping." >&2
- continue
- fi
+ test -r "$command_line_filename" \
+ || error 1 "cannot read $command_line_filename, skipping."
- # Get the name of the current directory. We want the full path
- # because in clean mode we are in tmp, in which case a relative
- # path has no meaning.
- filename_dir=`echo $command_line_filename | sed 's!/[^/]*$!!;s!^$!.!'`
- filename_dir=`cd "$filename_dir" >/dev/null && pwd`
+ # Get the name of the current directory.
+ in_dir=`func_dirname "$command_line_filename"`
+ in_dir_abs=`absolute "$in_dir"`
+ # In a clean build, we `cd', so get an absolute file name.
+ if $tidy; then
+ in_dir=$in_dir_abs
+ fi
# Strip directory part but leave extension.
- filename_ext=`basename "$command_line_filename"`
+ in_base=`basename "$command_line_filename"`
# Strip extension.
- filename_noext=`echo "$filename_ext" | sed 's/\.[^.]*$//'`
- ext=`echo "$filename_ext" | sed 's/^.*\.//'`
-
- # _src. Use same basename since we want to generate aux files with
- # the same basename as the manual. If --expand, then output the
- # macro-expanded file to here, else copy the original file.
- tmpdir_src=$tmpdir/src
- filename_src=$tmpdir_src/$filename_noext.$ext
-
- # _xtr. The file with the user's extra commands.
- tmpdir_xtr=$tmpdir/xtr
- filename_xtr=$tmpdir_xtr/$filename_noext.$ext
-
- # _bak. Copies of the previous xref files (another round is run if
- # they differ from the new one).
- tmpdir_bak=$tmpdir/bak
+ in_noext=`noext "$in_base"`
- # Make all those directories and give up if we can't succeed.
- mkdir $tmpdir_src $tmpdir_xtr $tmpdir_bak || exit 1
+ # The normalized file name to compile. Must always point to the
+ # file to actually compile (in case of recoding, macro-expansion etc.).
+ in_input=$in_dir/$in_base
- # Source file might include additional sources.
- # We want `.:$orig_pwd' before anything else. (We'll add `.:' later
- # after all other directories have been turned into absolute paths.)
- # `.' goes first to ensure that any old .aux, .cps,
- # etc. files in ${directory} don't get used in preference to fresher
- # files in `.'. Include orig_pwd in case we are in clean mode, where
- # we've cd'd to a temp directory.
- common="$orig_pwd$path_sep$filename_dir$path_sep$txincludes"
- TEXINPUTS="$common$TEXINPUTS_orig"
- INDEXSTYLE="$common$INDEXSTYLE_orig"
-
- # Convert relative paths to absolute paths, so we can run in another
- # directory (e.g., in --clean mode, or during the macro-support
- # detection.)
- #
- # Empty path components are meaningful to tex. We rewrite them
- # as `EMPTY' so they don't get lost when we split on $path_sep.
- TEXINPUTS=`echo $TEXINPUTS |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`
- INDEXSTYLE=`echo $INDEXSTYLE |sed 's/^:/EMPTY:/;s/:$/:EMPTY/;s/::/:EMPTY:/g'`
- save_IFS=$IFS
- IFS=$path_sep
- set x $TEXINPUTS; shift
- TEXINPUTS=.
- for dir
- do
- case $dir in
- EMPTY)
- TEXINPUTS=$TEXINPUTS$path_sep
- ;;
- [\\/]* | ?:[\\/]*) # Absolute paths don't need to be expansed.
- TEXINPUTS=$TEXINPUTS$path_sep$dir
- ;;
- *)
- abs=`cd "$dir" && pwd` && TEXINPUTS=$TEXINPUTS$path_sep$abs
- ;;
- esac
- done
- set x $INDEXSTYLE; shift
- INDEXSTYLE=.
- for dir
- do
- case $dir in
- EMPTY)
- INDEXSTYLE=$INDEXSTYLE$path_sep
- ;;
- [\\/]* | ?:[\\/]*) # Absolute paths don't need to be expansed.
- INDEXSTYLE=$INDEXSTYLE$path_sep$dir
- ;;
- *)
- abs=`cd "$dir" && pwd` && INDEXSTYLE=$INDEXSTYLE$path_sep$abs
- ;;
- esac
- done
- IFS=$save_IFS
- # If the user explicitly specified the language, use that.
- # Otherwise, if the first line is \input texinfo, assume it's texinfo.
- # Otherwise, guess from the file extension.
- if test -n "$set_language"; then
- language=$set_language
- elif sed 1q "$command_line_filename" | grep 'input texinfo' >/dev/null; then
- language=texinfo
+ # Compute the output file name.
+ if test x"$oname" != x; then
+ out_name=$oname
else
- language=
- fi
-
- # Get the type of the file (latex or texinfo) from the given language
- # we just guessed, or from the file extension if not set yet.
- case ${language:-$filename_ext} in
- [lL]a[tT]e[xX] | *.ltx | *.tex)
- # Assume a LaTeX file. LaTeX needs bibtex and uses latex for
- # compilation. No makeinfo.
- bibtex=${BIBTEX:-bibtex}
- makeinfo= # no point in running makeinfo on latex source.
- texindex=${MAKEINDEX:-makeindex}
- if test $oformat = dvi; then
- tex=${LATEX:-latex}
- else
- tex=${PDFLATEX:-pdflatex}
- fi
- ;;
-
- *)
- # Assume a Texinfo file. Texinfo files need makeinfo, texindex and tex.
- bibtex=
- texindex=${TEXINDEX:-texindex}
- if test $oformat = dvi; then
- tex=${TEX:-tex}
- else
- tex=${PDFTEX:-pdftex}
- fi
- # Unless required by the user, makeinfo expansion is wanted only
- # if texinfo.tex is too old.
- if test "$expand" = t; then
- makeinfo=${MAKEINFO:-makeinfo}
- else
- # Check if texinfo.tex performs macro expansion by looking for
- # its version. The version is a date of the form YEAR-MO-DA.
- # We don't need to use [0-9] to match the digits since anyway
- # the comparison with $txiprereq, a number, will fail with non
- # digits.
- txiversion_tex=txiversion.tex
- echo '\input texinfo.tex @bye' >$tmpdir/$txiversion_tex
- # Run in the tmpdir to avoid leaving files.
- eval `cd $tmpdir >/dev/null &&
- $tex $txiversion_tex 2>/dev/null |
- sed -n 's/^.*\[\(.*\)version \(....\)-\(..\)-\(..\).*$/txiformat=\1 txiversion="\2\3\4"/p'`
- $verbose "texinfo.tex preloaded as \`$txiformat', version is \`$txiversion' ..."
- if test "$txiprereq" -le "$txiversion" >/dev/null 2>&1; then
- makeinfo=
- else
- makeinfo=${MAKEINFO:-makeinfo}
- fi
- # As long as we had to run TeX, offer the user this convenience
- if test "$txiformat" = Texinfo; then
- escape=@
- fi
- fi
- ;;
- esac
-
- # Expand macro commands in the original source file using Makeinfo.
- # Always use `end' footnote style, since the `separate' style
- # generates different output (arguably this is a bug in -E).
- # Discard main info output, the user asked to run TeX, not makeinfo.
- if test -n "$makeinfo"; then
- $verbose "Macro-expanding $command_line_filename to $filename_src ..."
- sed -f $comment_iftex_sed "$command_line_filename" \
- | $makeinfo --footnote-style=end -I "$filename_dir" $miincludes \
- -o /dev/null --macro-expand=- \
- | sed -f $uncomment_iftex_sed >"$filename_src"
- filename_input=$filename_src
- fi
-
- # If makeinfo failed (or was not even run), use the original file as input.
- if test $? -ne 0 \
- || test ! -r "$filename_src"; then
- $verbose "Reverting to $command_line_filename ..."
- filename_input=$filename_dir/$filename_ext
- fi
-
- # Used most commonly for @finalout, @smallbook, etc.
- if test -n "$textra"; then
- $verbose "Inserting extra commands: $textra"
- sed '/^@setfilename/a\
-'"$textra" "$filename_input" >$filename_xtr
- filename_input=$filename_xtr
+ out_name=$in_noext.`out_lang_ext`
fi
+ out_dir=`func_dirname "$out_name"`
+ out_dir_abs=`absolute "$out_dir"`
+ out_base=`basename "$out_name"`
+ out_noext=`noext "$out_base"`
+}
- # If clean mode was specified, then move to the temporary directory.
- if test "$clean" = t; then
- $verbose "cd $tmpdir_src"
- cd "$tmpdir_src" || exit 1
- fi
- while :; do # will break out of loop below
- orig_xref_files=`$get_xref_files "$filename_noext"`
+## -------------- ##
+## TeXify files. ##
+## -------------- ##
- # Save copies of originals for later comparison.
- if test -n "$orig_xref_files"; then
- $verbose "Backing up xref files: `echo $orig_xref_files | sed 's|\./||g'`"
- cp $orig_xref_files $tmpdir_bak
- fi
+for command_line_filename
+do
+ verbose "Processing $command_line_filename ..."
- # Run bibtex on current file.
- # - If its input (AUX) exists.
- # - If AUX contains both `\bibdata' and `\bibstyle'.
- # - If some citations are missing (LOG contains `Citation').
- # or the LOG complains of a missing .bbl
- #
- # We run bibtex first, because I can see reasons for the indexes
- # to change after bibtex is run, but I see no reason for the
- # converse.
- #
- # Don't try to be too smart. Running bibtex only if the bbl file
- # exists and is older than the LaTeX file is wrong, since the
- # document might include files that have changed. Because there
- # can be several AUX (if there are \include's), but a single LOG,
- # looking for missing citations in LOG is easier, though we take
- # the risk to match false messages.
- if test -n "$bibtex" \
- && test -r "$filename_noext.aux" \
- && test -r "$filename_noext.log" \
- && (grep '^\\bibdata[{]' "$filename_noext.aux" \
- && grep '^\\bibstyle[{]' "$filename_noext.aux" \
- && (grep 'Warning:.*Citation.*undefined' "$filename_noext.log" \
- || grep 'No file .*\.bbl\.' "$filename_noext.log")) \
- >/dev/null 2>&1; \
- then
- $verbose "Running $bibtex $filename_noext ..."
- if $bibtex "$filename_noext" >&5; then :; else
- echo "$0: $bibtex exited with bad status, quitting." >&2
- exit 1
- fi
- fi
+ input_file_name_decode
- # What we'll run texindex on -- exclude non-index files.
- # Since we know index files are last, it is correct to remove everything
- # before .aux and .?o?. But don't really do <anything>o<anything>
- # -- don't match whitespace as <anything>.
- # Otherwise, if orig_xref_files contains something like
- # foo.xo foo.whatever
- # the space after the o will get matched.
- index_files=`echo "$orig_xref_files" \
- | sed "s!.*\.aux!!g;
- s!./$filename_noext\.[^ ]o[^ ]!!g;
- s/^[ ]*//;s/[ ]*$//"`
- # Run texindex (or makeindex) on current index files. If they
- # already exist, and after running TeX a first time the index
- # files don't change, then there's no reason to run TeX again.
- # But we won't know that if the index files are out of date or
- # nonexistent.
- if test -n "$texindex" && test -n "$index_files"; then
- $verbose "Running $texindex $index_files ..."
- if $texindex $index_files 2>&5 1>&2; then :; else
- echo "$0: $texindex exited with bad status, quitting." >&2
- exit 1
- fi
- fi
+ # `texinfo' or `latex'?
+ in_lang=`compute_language "$command_line_filename"`
- # Finally, run TeX.
- # Prevent $ESCAPE from being interpreted by the shell if it happens
- # to be `/'.
- $batch tex_args="\\${escape}nonstopmode\ \\${escape}input"
- cmd="$tex $tex_args $filename_input"
- $verbose "Running $cmd ..."
- if $cmd >&5; then :; else
- echo "$0: $tex exited with bad status, quitting." >&2
- echo "$0: see $filename_noext.log for errors." >&2
- test "$clean" = t \
- && cp "$filename_noext.log" "$orig_pwd"
- exit 1
- fi
+ # An auxiliary directory used for all the auxiliary tasks involved
+ # in compiling this document.
+ case $build_dir in
+ '' | . ) t2ddir=$out_noext.t2d ;;
+ *) # Avoid collisions between multiple occurrences of the same
+ # file, so depend on the output path. Remove leading `./',
+ # at least to avoid creating a file starting with `.!', i.e.,
+ # an invisible file. The sed expression is fragile if the cwd
+ # has active characters. Transform / into ! so that we don't
+ # need `mkdir -p'. It might be something to reconsider.
+ t2ddir=$build_dir/`echo "$out_dir_abs/$out_noext.t2d" |
+ $SED "s,^$orig_pwd/,,;s,^\./,,;s,/,!,g"`
+ esac
+ # Remove it at exit if clean mode.
+ trap "cleanup" 0 1 2 15
+ ensure_dir "$build_dir" "$t2ddir"
- # Decide if looping again is needed.
- finished=t
+ # We will change directory, better work with an absolute path...
+ t2ddir=`absolute "$t2ddir"`
+ # Sometimes there are incompatibilities between auxiliary files for
+ # DVI and PDF. The contents can also change whether we work on PDF
+ # and/or DVI. So keep separate spaces for each.
+ workdir=$t2ddir/`out_lang_tex`
+ ensure_dir "$workdir"
- # LaTeX (and the package changebar) report in the LOG file if it
- # should be rerun. This is needed for files included from
- # subdirs, since texi2dvi does not try to compare xref files in
- # subdirs. Performing xref files test is still good since LaTeX
- # does not report changes in xref files.
- if grep "Rerun to get" "$filename_noext.log" >/dev/null 2>&1; then
- finished=
- fi
+ # _build. In a tidy build, where the auxiliary files are output.
+ if $tidy; then
+ work_build=$workdir/build
+ else
+ work_build=.
+ fi
- # Check if xref files changed.
- new_xref_files=`$get_xref_files "$filename_noext"`
- $verbose "Original xref files = `echo $orig_xref_files | sed 's|\./||g'`"
- $verbose "New xref files = `echo $new_xref_files | sed 's|\./||g'`"
-
- # If old and new lists don't at least have the same file list,
- # then one file or another has definitely changed.
- test "x$orig_xref_files" != "x$new_xref_files" && finished=
-
- # File list is the same. We must compare each file until we find
- # a difference.
- if test -n "$finished"; then
- for this_file in $new_xref_files; do
- $verbose "Comparing xref file `echo $this_file | sed 's|\./||g'` ..."
- # cmp -s returns nonzero exit status if files differ.
- if cmp -s "$this_file" "$tmpdir_bak/$this_file"; then :; else
- # We only need to keep comparing until we find one that
- # differs, because we'll have to run texindex & tex again no
- # matter how many more there might be.
- finished=
- $verbose "xref file `echo $this_file | sed 's|\./||g'` differed ..."
- test "$debug" = t && diff -c "$tmpdir_bak/$this_file" "$this_file"
- break
- fi
- done
- fi
+ # _bak. Copies of the previous auxiliary files (another round is
+ # run if they differ from the new ones).
+ work_bak=$workdir/bak
- # If finished, exit the loop, else rerun the loop.
- test -n "$finished" && break
- done
+ # Make those directories.
+ ensure_dir "$work_build" "$work_bak"
- # If we were in clean mode, compilation was in a tmp directory.
- # Copy the DVI (or PDF) file into the directory where the compilation
- # has been done. (The temp dir is about to get removed anyway.)
- # We also return to the original directory so that
- # - the next file is processed in correct conditions
- # - the temporary file can be removed
- if test -n "$clean"; then
- if test -n "$oname"; then
- dest=$oname
- else
- dest=$orig_pwd
- fi
- $verbose "Copying $oformat file from `pwd` to $dest"
- cp -p "./$filename_noext.$oformat" "$dest"
- cd / # in case $orig_pwd is on a different drive (for DOS)
- cd $orig_pwd || exit 1
- fi
+ case $action in
+ compile)
+ # Compile the document.
+ compile
+ cleanup
+ ;;
- # Remove temporary files.
- if test "x$debug" = "x"; then
- $verbose "Removing $tmpdir_src $tmpdir_xtr $tmpdir_bak ..."
- cd /
- rm -rf $tmpdir_src $tmpdir_xtr $tmpdir_bak
- fi
+ mostly-clean)
+ mostly_clean
+ ;;
+ esac
done
-$verbose "$0 done."
+verbose "done."
exit 0 # exit successfully, not however we ended the loop.
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001,
# 2002, 2003 Free Software Foundation, Inc.
#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, you can either send email to this
-# program's maintainer or write to: The Free Software Foundation,
-# Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Original author: Noah Friedman <friedman@gnu.org>.
#
-BUILD_DIR=/usr/local/build/bash/bash-current
+BUILD_DIR=/usr/local/build/chet/bash/bash-current
THIS_SH=$BUILD_DIR/bash
PATH=$PATH:$BUILD_DIR
--- /dev/null
+:; ./shx
+
+sh:
+<&$fd ok
+nlbq Mon Aug 3 02:45:00 EDT 1992
+bang geoff
+quote 712824302
+setbq defmsgid=<1992Aug3.024502.6176@host>
+bgwait sleep done... wait 6187
+
+
+bash:
+<&$fd ok
+nlbq Mon Aug 3 02:45:09 EDT 1992
+bang geoff
+quote 712824311
+setbq defmsgid=<1992Aug3.024512.6212@host>
+bgwait sleep done... wait 6223
+
+
+ash:
+<&$fd shx1: 4: Syntax error: Bad fd number
+nlbq Mon Aug 3 02:45:19 EDT 1992
+bang geoff
+quote getdate: `"now"' not a valid date
+
+setbq defmsgid=<1992Aug3.` echo 024521
+bgwait sleep done... wait 6241
+
+
+ksh:
+<&$fd ok
+nlbq ./shx: 6248 Memory fault - core dumped
+bang geoff
+quote getdate: `"now"' not a valid date
+
+setbq defmsgid=<1992Aug3.024530.6257@host>
+bgwait no such job: 6265
+wait 6265
+sleep done...
+
+zsh:
+<&$fd ok
+nlbq Mon Aug 3 02:45:36 EDT 1992
+bang shx3: event not found: /s/ [4]
+quote 712824337
+setbq defmsgid=<..6290@host>
+bgwait shx7: unmatched " [9]
+sleep done...
+:;
--- /dev/null
+#! /bin/sh
+for cmd in sh bash ash ksh zsh
+do
+ echo
+ echo $cmd:
+ for demo in shx?
+ do
+ $cmd $demo
+ done
+done
else if (hmax >= 0) /* truncate HISTFILE if HISTFILESIZE >= 0 */
{
history_truncate_file (get_string_value ("HISTFILE"), hmax);
- if (hmax <= history_lines_in_file)
+ /* If we just shrank the history file to fewer lines than we've
+ already read, make sure we adjust our idea of how many lines
+ we have read from the file. */
+ if (hmax < history_lines_in_file)
history_lines_in_file = hmax;
}
}
projects / thirdparty / bash.git / commitdiff
