1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,2003
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
40 #include <sys/ioctl.h>
49 #include "intervals.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
57 #include "termhooks.h"
67 #include <sys/resource.h>
75 #if !defined (USG) || defined (BSD_PGRPS)
77 #define setpgrp setpgid
81 extern void malloc_warning
P_ ((char *));
82 extern void set_time_zone_rule
P_ ((char *));
84 extern char *index
P_ ((const char *, int));
87 /* Make these values available in GDB, which doesn't see macros. */
89 EMACS_INT gdb_valbits
= VALBITS
;
90 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
91 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
93 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
95 EMACS_INT gdb_data_seg_bits
= 0;
97 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
99 /* Command line args from shell, as list of strings. */
100 Lisp_Object Vcommand_line_args
;
102 /* The name under which Emacs was invoked, with any leading directory
104 Lisp_Object Vinvocation_name
;
106 /* The directory name from which Emacs was invoked. */
107 Lisp_Object Vinvocation_directory
;
109 /* The directory name in which to find subdirs such as lisp and etc.
110 nil means get them only from PATH_LOADSEARCH. */
111 Lisp_Object Vinstallation_directory
;
113 /* Hook run by `kill-emacs' before it does really anything. */
114 Lisp_Object Vkill_emacs_hook
;
116 /* An empty lisp string. To avoid having to build any other. */
117 Lisp_Object empty_string
;
120 /* Hooks for signal USR1 and USR2 handling. */
121 Lisp_Object Vsignal_USR1_hook
;
123 Lisp_Object Vsignal_USR2_hook
;
127 /* Search path separator. */
128 Lisp_Object Vpath_separator
;
130 /* Set nonzero after Emacs has started up the first time.
131 Prevents reinitialization of the Lisp world and keymaps
132 on subsequent starts. */
135 #ifdef DOUG_LEA_MALLOC
136 /* Preserves a pointer to the memory allocated that copies that
137 static data inside glibc's malloc. */
138 void *malloc_state_ptr
;
139 /* From glibc, a routine that returns a copy of the malloc internal state. */
140 extern void *malloc_get_state ();
141 /* From glibc, a routine that overwrites the malloc internal state. */
142 extern void malloc_set_state ();
143 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
144 dumping. Used to work around a bug in glibc's malloc. */
145 int malloc_using_checking
;
148 /* Variable whose value is symbol giving operating system type. */
149 Lisp_Object Vsystem_type
;
151 /* Variable whose value is string giving configuration built for. */
152 Lisp_Object Vsystem_configuration
;
154 /* Variable whose value is string giving configuration options,
155 for use when reporting bugs. */
156 Lisp_Object Vsystem_configuration_options
;
158 Lisp_Object Qfile_name_handler_alist
;
160 /* Current and previous system locales for messages and time. */
161 Lisp_Object Vsystem_messages_locale
;
162 Lisp_Object Vprevious_system_messages_locale
;
163 Lisp_Object Vsystem_time_locale
;
164 Lisp_Object Vprevious_system_time_locale
;
166 /* If non-zero, emacs should not attempt to use a window-specific code,
167 but instead should use the virtual terminal under which it was started. */
168 int inhibit_window_system
;
170 /* If nonzero, set Emacs to run at this priority. This is also used
171 in child_setup and sys_suspend to make sure subshells run at normal
172 priority; those functions have their own extern declaration. */
173 EMACS_INT emacs_priority
;
175 /* If non-zero, a filter or a sentinel is running. Tested to save the match
176 data on the first attempt to change it inside asynchronous code. */
177 int running_asynch_code
;
181 extern int inherited_pgroup
;
184 #ifdef HAVE_X_WINDOWS
185 /* If non-zero, -d was specified, meaning we're using some window system. */
189 /* An address near the bottom of the stack.
190 Tells GC how to save a copy of the stack. */
193 #ifdef HAVE_WINDOW_SYSTEM
194 extern Lisp_Object Vwindow_system
;
195 #endif /* HAVE_WINDOW_SYSTEM */
197 extern Lisp_Object Vauto_save_list_file_name
;
199 #ifdef USG_SHARED_LIBRARIES
200 /* If nonzero, this is the place to put the end of the writable segment
203 unsigned int bss_end
= 0;
206 /* Nonzero means running Emacs without interactive terminal. */
210 /* Value of Lisp variable `noninteractive'.
211 Normally same as C variable `noninteractive'
212 but nothing terrible happens if user sets this one. */
216 /* Save argv and argc. */
220 static void sort_args ();
221 void syms_of_emacs ();
224 Usage: %s [OPTION-OR-FILENAME]...\n\
226 Run Emacs, the extensible, customizable, self-documenting real-time\n\
227 display editor. The recommended way to start Emacs for normal editing\n\
228 is with no options at all.\n\
230 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
231 read the main documentation for these command-line arguments.\n\
233 Initialization options:\n\
235 --batch do not do interactive display; implies -q\n\
236 --script FILE run FILE as an Emacs Lisp script.\n\
237 --debug-init enable Emacs Lisp debugger during init file\n\
238 --help display this help message and exit\n\
239 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
240 --no-init-file, -q load neither ~/.emacs nor default.el\n\
241 --no-shared-memory, -nl do not use shared memory\n\
242 --no-site-file do not load site-start.el\n\
243 --no-splash do not display a splash screen on startup\n\
244 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
245 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
246 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
247 --user, -u USER load ~USER/.emacs instead of your own\n\
248 --version display version information and exit\n\
252 FILE visit FILE using find-file\n\
253 +LINE FILE visit FILE using find-file, then go to line LINE\n\
254 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
256 --directory, -L DIR add DIR to variable load-path\n\
257 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
258 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
259 --find-file FILE visit FILE\n\
260 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
261 --insert FILE insert contents of FILE into current buffer\n\
262 --kill exit without asking for confirmation\n\
263 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
264 --visit FILE visit FILE\n\
270 --background-color, -bg COLOR window background color\n\
271 --border-color, -bd COLOR main border color\n\
272 --border-width, -bw WIDTH width of main border\n\
273 --color=MODE color mode for character terminals;\n\
274 MODE defaults to `auto', and can also\n\
275 be `never', `auto', `always',\n\
276 or a mode name like `ansi8'\n\
277 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
278 --display, -d DISPLAY use X server DISPLAY\n\
279 --font, -fn FONT default font; must be fixed-width\n\
280 --foreground-color, -fg COLOR window foreground color\n\
281 --fullscreen, -fs make first frame fullscreen\n\
282 --fullwidth, -fw make the first frame wide as the screen\n\
283 --fullheight, -fh make the first frame high as the screen\n\
284 --geometry, -g GEOMETRY window geometry\n\
285 --iconic start Emacs in iconified state\n\
286 --icon-type, -i use picture of gnu for Emacs icon\n\
287 --internal-border, -ib WIDTH width between text and main border\n\
288 --line-spacing, -lsp PIXELS additional space to put between lines\n\
289 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
290 --name NAME title of main Emacs window\n\
291 --reverse-video, -r, -rv switch foreground and background\n\
292 --title, -T, -wn TITLE title for Emacs windows\n\
293 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
294 --xrm XRESOURCES set additional X resources\n\
296 You can generally also specify long option names with a single -; for\n\
297 example, -batch as well as --batch. You can use any unambiguous\n\
298 abbreviation for a --option.\n\
300 Various environment variables and window system resources also affect\n\
301 Emacs' operation. See the main documentation.\n\
305 Report bugs to %s. First, please see the Bugs\n\
306 section of the Emacs manual or the file BUGS.\n"
309 /* Signal code for the fatal signal that was received. */
310 int fatal_error_code
;
312 /* Nonzero if handling a fatal error already. */
313 int fatal_error_in_progress
;
315 /* If non-null, call this function from fatal_error_signal before
316 committing suicide. */
318 void (*fatal_error_signal_hook
) P_ ((void));
323 handle_USR1_signal (sig
)
326 struct input_event buf
;
328 bzero (&buf
, sizeof buf
);
329 buf
.kind
= USER_SIGNAL_EVENT
;
330 buf
.frame_or_window
= selected_frame
;
332 kbd_buffer_store_event (&buf
);
338 handle_USR2_signal (sig
)
341 struct input_event buf
;
343 bzero (&buf
, sizeof buf
);
344 buf
.kind
= USER_SIGNAL_EVENT
;
346 buf
.frame_or_window
= selected_frame
;
348 kbd_buffer_store_event (&buf
);
352 /* Handle bus errors, invalid instruction, etc. */
354 fatal_error_signal (sig
)
357 fatal_error_code
= sig
;
358 signal (sig
, SIG_DFL
);
360 TOTALLY_UNBLOCK_INPUT
;
362 /* If fatal error occurs in code below, avoid infinite recursion. */
363 if (! fatal_error_in_progress
)
365 fatal_error_in_progress
= 1;
367 shut_down_emacs (sig
, 0, Qnil
);
371 LIB$
STOP (SS$_ABORT
);
373 /* Signal the same code; this time it will really be fatal.
374 Remember that since we're in a signal handler, the signal we're
375 going to send is probably blocked, so we have to unblock it if we
376 want to really receive it. */
378 sigunblock (sigmask (fatal_error_code
));
381 if (fatal_error_signal_hook
)
382 fatal_error_signal_hook ();
384 kill (getpid (), fatal_error_code
);
390 /* Handler for SIGDANGER. */
392 memory_warning_signal (sig
)
395 signal (sig
, memory_warning_signal
);
397 malloc_warning ("Operating system warns that virtual memory is running low.\n");
399 /* It might be unsafe to call do_auto_save now. */
400 force_auto_save_soon ();
404 /* We define abort, rather than using it from the library,
405 so that GDB can return from a breakpoint here.
406 MSDOS has its own definition in msdos.c. */
408 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
410 #ifndef ABORT_RETURN_TYPE
411 #define ABORT_RETURN_TYPE void
417 kill (getpid (), SIGABRT
);
418 /* This shouldn't be executed, but it prevents a warning. */
424 /* Code for dealing with Lisp access to the Unix command line. */
427 init_cmdargs (argc
, argv
, skip_args
)
433 Lisp_Object name
, dir
, tem
;
434 int count
= SPECPDL_INDEX ();
435 Lisp_Object raw_name
;
440 raw_name
= build_string (argv
[0]);
442 /* Add /: to the front of the name
443 if it would otherwise be treated as magic. */
444 tem
= Ffind_file_name_handler (raw_name
, Qt
);
446 raw_name
= concat2 (build_string ("/:"), raw_name
);
448 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
449 Vinvocation_directory
= Ffile_name_directory (raw_name
);
451 /* If we got no directory in argv[0], search PATH to find where
452 Emacs actually came from. */
453 if (NILP (Vinvocation_directory
))
456 int yes
= openp (Vexec_path
, Vinvocation_name
,
457 Vexec_suffixes
, &found
, make_number (X_OK
));
460 /* Add /: to the front of the name
461 if it would otherwise be treated as magic. */
462 tem
= Ffind_file_name_handler (found
, Qt
);
464 found
= concat2 (build_string ("/:"), found
);
465 Vinvocation_directory
= Ffile_name_directory (found
);
469 if (!NILP (Vinvocation_directory
)
470 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
471 /* Emacs was started with relative path, like ./emacs.
473 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
475 Vinstallation_directory
= Qnil
;
477 if (!NILP (Vinvocation_directory
))
479 dir
= Vinvocation_directory
;
480 name
= Fexpand_file_name (Vinvocation_name
, dir
);
483 Lisp_Object tem
, lib_src_exists
;
484 Lisp_Object etc_exists
, info_exists
;
486 /* See if dir contains subdirs for use by Emacs.
487 Check for the ones that would exist in a build directory,
488 not including lisp and info. */
489 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
490 lib_src_exists
= Ffile_exists_p (tem
);
493 /* MSDOS installations frequently remove lib-src, but we still
494 must set installation-directory, or else info won't find
495 its files (it uses the value of installation-directory). */
496 tem
= Fexpand_file_name (build_string ("info"), dir
);
497 info_exists
= Ffile_exists_p (tem
);
502 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
504 tem
= Fexpand_file_name (build_string ("etc"), dir
);
505 etc_exists
= Ffile_exists_p (tem
);
506 if (!NILP (etc_exists
))
508 Vinstallation_directory
509 = Ffile_name_as_directory (dir
);
514 /* See if dir's parent contains those subdirs. */
515 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
516 lib_src_exists
= Ffile_exists_p (tem
);
520 /* See the MSDOS commentary above. */
521 tem
= Fexpand_file_name (build_string ("../info"), dir
);
522 info_exists
= Ffile_exists_p (tem
);
527 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
529 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
530 etc_exists
= Ffile_exists_p (tem
);
531 if (!NILP (etc_exists
))
533 tem
= Fexpand_file_name (build_string (".."), dir
);
534 Vinstallation_directory
535 = Ffile_name_as_directory (tem
);
540 /* If the Emacs executable is actually a link,
541 next try the dir that the link points into. */
542 tem
= Ffile_symlink_p (name
);
545 name
= Fexpand_file_name (tem
, dir
);
546 dir
= Ffile_name_directory (name
);
553 Vcommand_line_args
= Qnil
;
555 for (i
= argc
- 1; i
>= 0; i
--)
557 if (i
== 0 || i
> skip_args
)
559 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
562 unbind_to (count
, Qnil
);
565 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
566 doc
: /* Return the program name that was used to run Emacs.
567 Any directory names are omitted. */)
570 return Fcopy_sequence (Vinvocation_name
);
573 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
575 doc
: /* Return the directory name in which the Emacs executable was located. */)
578 return Fcopy_sequence (Vinvocation_directory
);
583 #ifdef LINK_CRTL_SHARE
584 #ifdef SHARABLE_LIB_BUG
585 extern noshare
char **environ
;
586 #endif /* SHARABLE_LIB_BUG */
587 #endif /* LINK_CRTL_SHARE */
591 /* A valid but unlikely value for the TZ environment value.
592 It is OK (though a bit slower) if the user actually chooses this value. */
593 static char dump_tz
[] = "UtC0";
596 #ifndef ORDINARY_LINK
597 /* We don't include crtbegin.o and crtend.o in the link,
598 so these functions and variables might be missed.
599 Provide dummy definitions to avoid error.
600 (We don't have any real constructors or destructors.) */
602 #ifndef GCC_CTORS_IN_LIBC
603 void __do_global_ctors ()
605 void __do_global_ctors_aux ()
607 void __do_global_dtors ()
609 /* GNU/Linux has a bug in its library; avoid an error. */
611 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
613 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
614 #endif /* GCC_CTORS_IN_LIBC */
617 #endif /* __GNUC__ */
618 #endif /* ORDINARY_LINK */
620 /* Test whether the next argument in ARGV matches SSTR or a prefix of
621 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
622 (the argument is supposed to have a value) store in *VALPTR either
623 the next argument or the portion of this one after the equal sign.
624 ARGV is read starting at position *SKIPPTR; this index is advanced
625 by the number of arguments used.
627 Too bad we can't just use getopt for all of this, but we don't have
628 enough information to do it right. */
631 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
644 /* Don't access argv[argc]; give up in advance. */
645 if (argc
<= *skipptr
+ 1)
648 arg
= argv
[*skipptr
+1];
651 if (strcmp (arg
, sstr
) == 0)
655 *valptr
= argv
[*skipptr
+2];
662 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
663 ? p
- arg
: strlen (arg
));
664 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
666 else if (valptr
== NULL
)
677 else if (argv
[*skipptr
+2] != NULL
)
679 *valptr
= argv
[*skipptr
+2];
689 #ifdef DOUG_LEA_MALLOC
691 /* malloc can be invoked even before main (e.g. by the dynamic
692 linker), so the dumped malloc state must be restored as early as
693 possible using this special hook. */
696 malloc_initialize_hook ()
699 extern char **environ
;
704 if (!malloc_using_checking
)
705 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
706 ignored if the heap to be restored was constructed without
707 malloc checking. Can't use unsetenv, since that calls malloc. */
711 for (p
= environ
; p
&& *p
; p
++)
712 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
721 malloc_set_state (malloc_state_ptr
);
722 free (malloc_state_ptr
);
725 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
728 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
730 #endif /* DOUG_LEA_MALLOC */
733 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
734 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
736 /* This function is used to determine an address to which bug report should
740 bug_reporting_address ()
746 temp
= Fsymbol_value (intern ("emacs-version"));
748 /* When `emacs-version' is invalid, use normal address. */
750 return REPORT_EMACS_BUG_ADDRESS
;
752 string
= SDATA (temp
);
754 /* Count dots in `emacs-version'. */
762 /* When `emacs-version' has at least three dots, it is development or
763 pretest version of Emacs. */
764 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
784 char stack_bottom_variable
;
785 int do_initial_setlocale
;
790 #ifdef HAVE_SETRLIMIT
797 extern Lisp_Object
*stack_base
;
801 #ifdef LINUX_SBRK_BUG
805 #ifdef RUN_TIME_REMAP
807 run_time_remap (argv
[0]);
812 unexec_init_emacs_zone ();
815 sort_args (argc
, argv
);
817 while (argv
[argc
]) argc
++;
819 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
820 /* We don't know the version number unless this is a dumped Emacs.
821 So ignore --version otherwise. */
825 tem
= Fsymbol_value (intern ("emacs-version"));
828 fprintf (stderr
, "Invalid value of `emacs-version'\n");
833 printf ("GNU Emacs %s\n", SDATA (tem
));
834 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
835 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
836 printf ("You may redistribute copies of Emacs\n");
837 printf ("under the terms of the GNU General Public License.\n");
838 printf ("For more information about these matters, ");
839 printf ("see the file named COPYING.\n");
844 /* Map in shared memory, if we are using that. */
846 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
849 /* The shared memory was just restored, which clobbered this. */
855 /* The shared memory was just restored, which clobbered this. */
862 extern int malloc_cookie
;
863 /* This helps out unexnext.c. */
865 if (malloc_jumpstart (malloc_cookie
) != 0)
866 printf ("malloc jumpstart failed!\n");
871 /* Skip process serial number passed in the form -psn_x_y as
872 command-line argument. */
873 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
878 /* If -map specified, map the data file in. */
881 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
885 #ifdef LINK_CRTL_SHARE
886 #ifdef SHARABLE_LIB_BUG
887 /* Bletcherous shared libraries! */
889 stdin
= fdopen (0, "r");
891 stdout
= fdopen (1, "w");
893 stderr
= fdopen (2, "w");
896 #endif /* SHARABLE_LIB_BUG */
897 #endif /* LINK_CRTL_SHARE */
900 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
901 /* Extend the stack space available.
902 Don't do that if dumping, since some systems (e.g. DJGPP)
903 might define a smaller stack limit at that time. */
906 && (!noninteractive
|| initialized
)
908 && !getrlimit (RLIMIT_STACK
, &rlim
))
911 extern int re_max_failures
;
912 /* Approximate the amount regex.c needs per unit of re_max_failures. */
913 int ratio
= 20 * sizeof (char *);
914 /* Then add 33% to cover the size of the smaller stacks that regex.c
915 successively allocates and discards, on its way to the maximum. */
917 /* Add in some extra to cover
918 what we're likely to use for other reasons. */
919 newlim
= re_max_failures
* ratio
+ 200000;
921 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
922 stack allocation routine for new process that the allocation
923 fails if stack limit is not on page boundary. So, round up the
924 new limit to page boundary. */
925 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
927 if (newlim
> rlim
.rlim_max
)
929 newlim
= rlim
.rlim_max
;
930 /* Don't let regex.c overflow the stack we have. */
931 re_max_failures
= (newlim
- 200000) / ratio
;
933 if (rlim
.rlim_cur
< newlim
)
934 rlim
.rlim_cur
= newlim
;
936 setrlimit (RLIMIT_STACK
, &rlim
);
938 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
940 /* Record (approximately) where the stack begins. */
941 stack_bottom
= &stack_bottom_variable
;
943 #ifdef USG_SHARED_LIBRARIES
945 brk ((void *)bss_end
);
950 #ifndef SYSTEM_MALLOC
951 /* Arrange to get warning messages as memory fills up. */
952 memory_warnings (0, malloc_warning
);
954 /* Call malloc at least once, to run the initial __malloc_hook.
955 Also call realloc and free for consistency. */
956 free (realloc (malloc (4), 4));
958 /* Arrange to disable interrupt input inside malloc etc. */
959 uninterrupt_malloc ();
960 #endif /* not SYSTEM_MALLOC */
962 #if defined (MSDOS) || defined (WINDOWSNT)
963 /* We do all file input/output as binary files. When we need to translate
964 newlines, we do that manually. */
966 #endif /* MSDOS || WINDOWSNT */
970 if (!isatty (fileno (stdin
)))
971 setmode (fileno (stdin
), O_BINARY
);
972 if (!isatty (fileno (stdout
)))
975 setmode (fileno (stdout
), O_BINARY
);
977 #else /* not __DJGPP__ >= 2 */
978 (stdin
)->_flag
&= ~_IOTEXT
;
979 (stdout
)->_flag
&= ~_IOTEXT
;
980 (stderr
)->_flag
&= ~_IOTEXT
;
981 #endif /* not __DJGPP__ >= 2 */
984 #ifdef SET_EMACS_PRIORITY
986 nice (emacs_priority
);
988 #endif /* SET_EMACS_PRIORITY */
990 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
991 The build procedure uses this while dumping, to ensure that the
992 dumped Emacs does not have its system locale tables initialized,
993 as that might cause screwups when the dumped Emacs starts up. */
995 char *lc_all
= getenv ("LC_ALL");
996 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
999 /* Set locale now, so that initial error messages are localized properly.
1000 fixup_locale must wait until later, since it builds strings. */
1001 if (do_initial_setlocale
)
1002 setlocale (LC_ALL
, "");
1004 #ifdef EXTRA_INITIALIZE
1008 inhibit_window_system
= 0;
1010 /* Handle the -t switch, which specifies filename to use as terminal. */
1014 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1019 result
= emacs_open (term
, O_RDWR
, 0);
1022 char *errstring
= strerror (errno
);
1023 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1029 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1032 fprintf (stderr
, "Using %s\n", term
);
1033 #ifdef HAVE_WINDOW_SYSTEM
1034 inhibit_window_system
= 1; /* -t => -nw */
1041 /* Command line option --no-windows is deprecated and thus not mentioned
1042 in the manual and usage informations. */
1043 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1044 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1045 inhibit_window_system
= 1;
1047 /* Handle the -batch switch, which means don't do interactive display. */
1049 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1051 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1053 noninteractive
= 1; /* Set batch mode. */
1054 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1055 handled in proper sequence. */
1056 argv
[skip_args
- 1] = "-l";
1058 sort_args (argc
, argv
);
1061 /* Handle the --help option, which gives a usage message. */
1062 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1064 printf (USAGE1
, argv
[0]);
1066 printf (USAGE3
, bug_reporting_address ());
1070 if (! noninteractive
)
1075 inherited_pgroup
= EMACS_GETPGRP (0);
1076 setpgrp (0, getpid ());
1079 #if defined (USG5) && defined (INTERRUPT_INPUT)
1087 /* Don't catch SIGHUP if dumping. */
1094 sigblock (sigmask (SIGHUP
));
1095 /* In --batch mode, don't catch SIGHUP if already ignored.
1096 That makes nohup work. */
1097 if (! noninteractive
1098 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1099 signal (SIGHUP
, fatal_error_signal
);
1100 sigunblock (sigmask (SIGHUP
));
1105 ! noninteractive
|| initialized
1111 /* Don't catch these signals in batch mode if dumping.
1112 On some machines, this sets static data that would make
1113 signal fail to work right when the dumped Emacs is run. */
1114 signal (SIGQUIT
, fatal_error_signal
);
1115 signal (SIGILL
, fatal_error_signal
);
1116 signal (SIGTRAP
, fatal_error_signal
);
1118 signal (SIGUSR1
, handle_USR1_signal
);
1120 signal (SIGUSR2
, handle_USR2_signal
);
1124 signal (SIGABRT
, fatal_error_signal
);
1127 signal (SIGHWE
, fatal_error_signal
);
1130 signal (SIGPRE
, fatal_error_signal
);
1133 signal (SIGORE
, fatal_error_signal
);
1136 signal (SIGUME
, fatal_error_signal
);
1139 signal (SIGDLK
, fatal_error_signal
);
1142 signal (SIGCPULIM
, fatal_error_signal
);
1145 /* This is missing on some systems - OS/2, for example. */
1146 signal (SIGIOT
, fatal_error_signal
);
1149 signal (SIGEMT
, fatal_error_signal
);
1151 signal (SIGFPE
, fatal_error_signal
);
1153 signal (SIGBUS
, fatal_error_signal
);
1155 signal (SIGSEGV
, fatal_error_signal
);
1157 signal (SIGSYS
, fatal_error_signal
);
1159 signal (SIGTERM
, fatal_error_signal
);
1161 signal (SIGXCPU
, fatal_error_signal
);
1164 signal (SIGXFSZ
, fatal_error_signal
);
1165 #endif /* SIGXFSZ */
1168 /* This just means available memory is getting low. */
1169 signal (SIGDANGER
, memory_warning_signal
);
1173 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1174 signal (SIGXCPU
, fatal_error_signal
);
1176 signal (SIGIOINT
, fatal_error_signal
);
1178 signal (SIGGRANT
, fatal_error_signal
);
1179 signal (SIGRETRACT
, fatal_error_signal
);
1180 signal (SIGSOUND
, fatal_error_signal
);
1181 signal (SIGMSG
, fatal_error_signal
);
1185 noninteractive1
= noninteractive
;
1187 /* Perform basic initializations (not merely interning symbols). */
1194 init_charset_once ();
1195 init_coding_once ();
1196 init_syntax_once (); /* Create standard syntax table. */
1197 init_category_once (); /* Create standard category table. */
1198 /* Must be done before init_buffer. */
1199 init_casetab_once ();
1200 init_buffer_once (); /* Create buffer table and some buffers. */
1201 init_minibuf_once (); /* Create list of minibuffers. */
1202 /* Must precede init_window_once. */
1204 /* Call syms_of_xfaces before init_window_once because that
1205 function creates Vterminal_frame. Termcap frames now use
1206 faces, and the face implementation uses some symbols as
1209 /* Call syms_of_keyboard before init_window_once because
1210 keyboard sets up symbols that include some face names that
1211 the X support will want to use. This can happen when
1212 CANNOT_DUMP is defined. */
1213 syms_of_keyboard ();
1216 /* init_window_once calls make_terminal_frame which on Mac OS
1217 creates a full-fledge output_mac type frame. This does not
1218 work correctly before syms_of_textprop, syms_of_macfns,
1219 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1220 syms_of_frame, mac_initialize, and init_keyboard have already
1222 syms_of_textprop ();
1236 init_window_once (); /* Init the window system. */
1237 init_fileio_once (); /* Must precede any path manipulation. */
1238 #ifdef HAVE_WINDOW_SYSTEM
1239 init_fringe_once (); /* Swap bitmaps if necessary. */
1240 #endif /* HAVE_WINDOW_SYSTEM */
1245 if (do_initial_setlocale
)
1248 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1249 Vsystem_time_locale
= Vprevious_system_time_locale
;
1254 #ifdef CLASH_DETECTION
1258 running_asynch_code
= 0;
1260 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1261 but not while dumping. */
1264 int inhibit_unibyte
= 0;
1266 /* --multibyte overrides EMACS_UNIBYTE. */
1267 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1268 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1269 /* Ignore EMACS_UNIBYTE before dumping. */
1270 || (!initialized
&& noninteractive
))
1271 inhibit_unibyte
= 1;
1273 /* --unibyte requests that we set up to do everything with single-byte
1274 buffers and strings. We need to handle this before calling
1275 init_lread, init_editfns and other places that generate Lisp strings
1276 from text in the environment. */
1277 /* Actually this shouldn't be needed as of 20.4 in a generally
1278 unibyte environment. As handa says, environment values
1279 aren't now decoded; also existing buffers are now made
1280 unibyte during startup if .emacs sets unibyte. Tested with
1281 8-bit data in environment variables and /etc/passwd, setting
1282 unibyte and Latin-1 in .emacs. -- Dave Love */
1283 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1284 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1285 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1287 Lisp_Object old_log_max
;
1288 Lisp_Object symbol
, tail
;
1290 symbol
= intern ("default-enable-multibyte-characters");
1291 Fset (symbol
, Qnil
);
1295 /* Erase pre-dump messages in *Messages* now so no abort. */
1296 old_log_max
= Vmessage_log_max
;
1297 XSETFASTINT (Vmessage_log_max
, 0);
1298 message_dolog ("", 0, 1, 0);
1299 Vmessage_log_max
= old_log_max
;
1302 for (tail
= Vbuffer_alist
; CONSP (tail
);
1307 buffer
= Fcdr (XCAR (tail
));
1308 /* Verify that all buffers are empty now, as they
1310 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1312 /* It is safe to do this crudely in an empty buffer. */
1313 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1319 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1322 #ifdef HAVE_X_WINDOWS
1323 /* Stupid kludge to catch command-line display spec. We can't
1324 handle this argument entirely in window system dependent code
1325 because we don't even know which window system dependent code
1326 to run until we've recognized this argument. */
1328 char *displayname
= 0;
1329 int count_before
= skip_args
;
1331 /* Skip any number of -d options, but only use the last one. */
1334 int count_before_this
= skip_args
;
1336 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1338 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1343 count_before
= count_before_this
;
1346 /* If we have the form --display=NAME,
1347 convert it into -d name.
1348 This requires inserting a new element into argv. */
1349 if (displayname
!= 0 && skip_args
- count_before
== 1)
1351 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1354 for (j
= 0; j
< count_before
+ 1; j
++)
1356 new[count_before
+ 1] = "-d";
1357 new[count_before
+ 2] = displayname
;
1358 for (j
= count_before
+ 2; j
<argc
; j
++)
1359 new[j
+ 1] = argv
[j
];
1363 /* Change --display to -d, when its arg is separate. */
1364 else if (displayname
!= 0 && skip_args
> count_before
1365 && argv
[count_before
+ 1][1] == '-')
1366 argv
[count_before
+ 1] = "-d";
1368 /* Don't actually discard this arg. */
1369 skip_args
= count_before
;
1373 /* argmatch must not be used after here,
1374 except when bulding temacs
1375 because the -d argument has not been skipped in skip_args. */
1378 /* Call early 'cause init_environment needs it. */
1380 /* Set defaults for several environment variables. */
1382 init_environment (argc
, argv
, skip_args
);
1389 /* Initialize environment from registry settings. */
1390 init_environment (argv
);
1391 init_ntproc (); /* must precede init_editfns. */
1396 init_mac_osx_environment ();
1399 /* egetenv is a pretty low-level facility, which may get called in
1400 many circumstances; it seems flimsy to put off initializing it
1401 until calling init_callproc. */
1402 set_process_environment ();
1403 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1404 if this is not done. Do it after set_process_environment so that we
1405 don't pollute Vprocess_environment. */
1406 /* Setting LANG here will defeat the startup locale processing... */
1411 init_buffer (); /* Init default directory of main buffer. */
1413 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1414 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1418 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1419 Lisp_Object old_log_max
;
1420 old_log_max
= Vmessage_log_max
;
1421 XSETFASTINT (Vmessage_log_max
, 0);
1422 message_dolog ("", 0, 1, 0);
1423 Vmessage_log_max
= old_log_max
;
1426 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1429 /* Intern the names of all standard functions and variables;
1430 define standard keys. */
1434 /* The basic levels of Lisp must come first. */
1435 /* And data must come first of all
1436 for the sake of symbols like error-message. */
1438 /* Called before init_window_once for Mac OS Classic. */
1446 syms_of_floatfns ();
1450 syms_of_bytecode ();
1452 syms_of_casefiddle ();
1454 syms_of_callproc ();
1455 syms_of_category ();
1457 /* Called before init_window_once for Mac OS Classic. */
1462 #ifndef NO_DIR_LIBRARY
1464 #endif /* not NO_DIR_LIBRARY */
1470 syms_of_coding (); /* This should be after syms_of_fileio. */
1471 #ifdef CLASH_DETECTION
1472 syms_of_filelock ();
1473 #endif /* CLASH_DETECTION */
1482 /* Called before init_window_once for Mac OS Classic. */
1493 /* Called before init_window_once for Mac OS Classic. */
1494 syms_of_textprop ();
1496 syms_of_composite ();
1502 #endif /* WINDOWSNT */
1505 #ifdef HAVE_WINDOW_SYSTEM
1507 #endif /* HAVE_WINDOW_SYSTEM */
1508 #ifdef HAVE_X_WINDOWS
1518 #endif /* HAVE_X_WINDOWS */
1522 /* Called before init_window_once for Mac OS Classic. */
1530 syms_of_w32select ();
1533 #endif /* HAVE_NTGUI */
1540 #endif /* HAVE_CARBON */
1550 keys_of_casefiddle ();
1553 keys_of_keyboard ();
1561 Initialization that must be done even if the global variable
1562 initialized is non zero
1565 globals_of_w32fns ();
1566 globals_of_w32menu ();
1567 #endif /* end #ifdef HAVE_NTGUI */
1570 if (!noninteractive
)
1573 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1575 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1578 /* Called before init_window_once for Mac OS Classic. */
1579 init_keyboard (); /* This too must precede init_sys_modes. */
1582 init_vmsproc (); /* And this too. */
1584 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1585 #if defined (HAVE_X_WINDOWS) || defined (WINDOWSNT)
1587 #endif /* HAVE_X_WINDOWS */
1590 #ifdef HAVE_WINDOW_SYSTEM
1592 #endif /* HAVE_WINDOW_SYSTEM */
1608 /* Handle -l loadup, args passed by Makefile. */
1609 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1610 Vtop_level
= Fcons (intern ("load"),
1611 Fcons (build_string (file
), Qnil
));
1612 /* Unless next switch is -nl, load "loadup.el" first thing. */
1614 Vtop_level
= Fcons (intern ("load"),
1615 Fcons (build_string ("loadup.el"), Qnil
));
1622 /* If the execution TZ happens to be the same as the dump TZ,
1623 change it to some other value and then change it back,
1624 to force the underlying implementation to reload the TZ info.
1625 This is needed on implementations that load TZ info from files,
1626 since the TZ file contents may differ between dump and execution. */
1627 char *tz
= getenv ("TZ");
1628 if (tz
&& !strcmp (tz
, dump_tz
))
1638 /* Set up for profiling. This is known to work on FreeBSD and
1639 GNU/Linux. It might work on some other systems too. Give it a
1640 try and tell us if it works on your system. To compile for
1641 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1642 #if defined (__FreeBSD__) || defined (__linux)
1646 extern void _mcleanup ();
1648 extern void safe_bcopy ();
1649 extern void dump_opcode_frequencies ();
1652 /* This uses safe_bcopy because that function comes first in the
1653 Emacs executable. It might be better to use something that
1654 gives the start of the text segment, but start_of_text is not
1655 defined on all systems now. */
1656 monstartup (safe_bcopy
, &etext
);
1665 #ifdef LOCALTIME_CACHE
1666 /* Some versions of localtime have a bug. They cache the value of the time
1667 zone rather than looking it up every time. Since localtime() is
1668 called to bolt the undumping time into the undumped emacs, this
1669 results in localtime ignoring the TZ environment variable.
1670 This flushes the new TZ value into localtime. */
1672 #endif /* defined (LOCALTIME_CACHE) */
1674 /* Enter editor command loop. This never returns. */
1680 /* Sort the args so we can find the most important ones
1681 at the beginning of argv. */
1683 /* First, here's a table of all the standard options. */
1685 struct standard_args
1693 struct standard_args standard_args
[] =
1695 { "-version", "--version", 150, 0 },
1697 { "-nl", "--no-shared-memory", 140, 0 },
1700 { "-map", "--map-data", 130, 0 },
1702 { "-t", "--terminal", 120, 1 },
1703 { "-nw", "--no-window-system", 110, 0 },
1704 { "-nw", "--no-windows", 110, 0 },
1705 { "-batch", "--batch", 100, 0 },
1706 { "-script", "--script", 100, 1 },
1707 { "-help", "--help", 90, 0 },
1708 { "-no-unibyte", "--no-unibyte", 83, 0 },
1709 { "-multibyte", "--multibyte", 82, 0 },
1710 { "-unibyte", "--unibyte", 81, 0 },
1711 { "-no-multibyte", "--no-multibyte", 80, 0 },
1712 { "-nl", "--no-loadup", 70, 0 },
1713 /* -d must come last before the options handled in startup.el. */
1714 { "-d", "--display", 60, 1 },
1715 { "-display", 0, 60, 1 },
1716 /* Now for the options handled in startup.el. */
1717 { "-q", "--no-init-file", 50, 0 },
1718 { "-no-init-file", 0, 50, 0 },
1719 { "-no-site-file", "--no-site-file", 40, 0 },
1720 { "-no-splash", "--no-splash", 40, 0 },
1721 { "-u", "--user", 30, 1 },
1722 { "-user", 0, 30, 1 },
1723 { "-debug-init", "--debug-init", 20, 0 },
1724 { "-i", "--icon-type", 15, 0 },
1725 { "-itype", 0, 15, 0 },
1726 { "-iconic", "--iconic", 15, 0 },
1727 { "-bg", "--background-color", 10, 1 },
1728 { "-background", 0, 10, 1 },
1729 { "-fg", "--foreground-color", 10, 1 },
1730 { "-foreground", 0, 10, 1 },
1731 { "-bd", "--border-color", 10, 1 },
1732 { "-bw", "--border-width", 10, 1 },
1733 { "-ib", "--internal-border", 10, 1 },
1734 { "-ms", "--mouse-color", 10, 1 },
1735 { "-cr", "--cursor-color", 10, 1 },
1736 { "-fn", "--font", 10, 1 },
1737 { "-font", 0, 10, 1 },
1738 { "-fs", "--fullscreen", 10, 0 },
1739 { "-fw", "--fullwidth", 10, 0 },
1740 { "-fh", "--fullheight", 10, 0 },
1741 { "-g", "--geometry", 10, 1 },
1742 { "-geometry", 0, 10, 1 },
1743 { "-T", "--title", 10, 1 },
1744 { "-title", 0, 10, 1 },
1745 { "-name", "--name", 10, 1 },
1746 { "-xrm", "--xrm", 10, 1 },
1747 { "-r", "--reverse-video", 5, 0 },
1749 { "-reverse", 0, 5, 0 },
1750 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1751 { "-vb", "--vertical-scroll-bars", 5, 0 },
1752 { "-color", "--color", 5, 0},
1753 /* These have the same priority as ordinary file name args,
1754 so they are not reordered with respect to those. */
1755 { "-L", "--directory", 0, 1 },
1756 { "-directory", 0, 0, 1 },
1757 { "-l", "--load", 0, 1 },
1758 { "-load", 0, 0, 1 },
1759 { "-f", "--funcall", 0, 1 },
1760 { "-funcall", 0, 0, 1 },
1761 { "-eval", "--eval", 0, 1 },
1762 { "-execute", "--execute", 0, 1 },
1763 { "-find-file", "--find-file", 0, 1 },
1764 { "-visit", "--visit", 0, 1 },
1765 { "-file", "--file", 0, 1 },
1766 { "-insert", "--insert", 0, 1 },
1767 /* This should be processed after ordinary file name args and the like. */
1768 { "-kill", "--kill", -10, 0 },
1771 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1772 so that the highest priority ones come first.
1773 Do not change the order of elements of equal priority.
1774 If an option takes an argument, keep it and its argument together.
1776 If an option that takes no argument appears more
1777 than once, eliminate all but one copy of it. */
1780 sort_args (argc
, argv
)
1784 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1785 /* For each element of argv,
1786 the corresponding element of options is:
1787 0 for an option that takes no arguments,
1788 1 for an option that takes one argument, etc.
1789 -1 for an ordinary non-option argument. */
1790 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1791 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1793 int incoming_used
= 1;
1797 /* Categorize all the options,
1798 and figure out which argv elts are option arguments. */
1799 for (from
= 1; from
< argc
; from
++)
1803 if (argv
[from
][0] == '-')
1808 /* If we have found "--", don't consider
1809 any more arguments as options. */
1810 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1812 /* Leave the "--", and everything following it, at the end. */
1813 for (; from
< argc
; from
++)
1815 priority
[from
] = -100;
1821 /* Look for a match with a known old-fashioned option. */
1822 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1823 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1825 options
[from
] = standard_args
[i
].nargs
;
1826 priority
[from
] = standard_args
[i
].priority
;
1827 if (from
+ standard_args
[i
].nargs
>= argc
)
1828 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1829 from
+= standard_args
[i
].nargs
;
1833 /* Look for a match with a known long option.
1834 MATCH is -1 if no match so far, -2 if two or more matches so far,
1835 >= 0 (the table index of the match) if just one match so far. */
1836 if (argv
[from
][1] == '-')
1839 thislen
= strlen (argv
[from
]);
1840 equals
= index (argv
[from
], '=');
1842 thislen
= equals
- argv
[from
];
1845 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1846 if (standard_args
[i
].longname
1847 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1856 /* If we found exactly one match, use that. */
1859 options
[from
] = standard_args
[match
].nargs
;
1860 priority
[from
] = standard_args
[match
].priority
;
1861 /* If --OPTION=VALUE syntax is used,
1862 this option uses just one argv element. */
1865 if (from
+ options
[from
] >= argc
)
1866 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1867 from
+= options
[from
];
1874 /* Copy the arguments, in order of decreasing priority, to NEW. */
1876 while (incoming_used
< argc
)
1879 int best_priority
= -9999;
1881 /* Find the highest priority remaining option.
1882 If several have equal priority, take the first of them. */
1883 for (from
= 1; from
< argc
; from
++)
1885 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1887 best_priority
= priority
[from
];
1890 /* Skip option arguments--they are tied to the options. */
1891 if (options
[from
] > 0)
1892 from
+= options
[from
];
1898 /* Copy the highest priority remaining option, with its args, to NEW.
1899 Unless it is a duplicate of the previous one. */
1900 if (! (options
[best
] == 0
1901 && ! strcmp (new[to
- 1], argv
[best
])))
1903 new[to
++] = argv
[best
];
1904 for (i
= 0; i
< options
[best
]; i
++)
1905 new[to
++] = argv
[best
+ i
+ 1];
1908 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1910 /* Clear out this option in ARGV. */
1912 for (i
= 0; i
< options
[best
]; i
++)
1913 argv
[best
+ i
+ 1] = 0;
1916 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1920 bcopy (new, argv
, sizeof (char *) * argc
);
1927 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1928 doc
: /* Exit the Emacs job and kill it.
1929 If ARG is an integer, return ARG as the exit program code.
1930 If ARG is a string, stuff it as keyboard input.
1932 The value of `kill-emacs-hook', if not void,
1933 is a list of functions (of no args),
1934 all of which are called before Emacs is actually killed. */)
1938 struct gcpro gcpro1
;
1945 if (!NILP (Vrun_hooks
) && !noninteractive
)
1946 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1950 /* Is it really necessary to do this deassign
1951 when we are going to exit anyway? */
1956 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1958 /* If we have an auto-save list file,
1959 kill it because we are exiting Emacs deliberately (not crashing).
1960 Do it after shut_down_emacs, which does an auto-save. */
1961 if (STRINGP (Vauto_save_list_file_name
))
1962 unlink (SDATA (Vauto_save_list_file_name
));
1964 exit (INTEGERP (arg
) ? XINT (arg
)
1975 /* Perform an orderly shutdown of Emacs. Autosave any modified
1976 buffers, kill any child processes, clean up the terminal modes (if
1977 we're in the foreground), and other stuff like that. Don't perform
1978 any redisplay; this may be called when Emacs is shutting down in
1979 the background, or after its X connection has died.
1981 If SIG is a signal number, print a message for it.
1983 This is called by fatal signal handlers, X protocol error handlers,
1987 shut_down_emacs (sig
, no_x
, stuff
)
1991 /* Prevent running of hooks from now on. */
1994 /* If we are controlling the terminal, reset terminal modes. */
1995 #ifdef EMACS_HAVE_TTY_PGRP
1997 int pgrp
= EMACS_GETPGRP (0);
2000 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2005 if (sig
&& sig
!= SIGTERM
)
2006 fprintf (stderr
, "Fatal error (%d)", sig
);
2014 stuff_buffered_input (stuff
);
2016 kill_buffer_processes (Qnil
);
2017 Fdo_auto_save (Qt
, Qnil
);
2019 #ifdef CLASH_DETECTION
2020 unlock_all_files ();
2024 kill_vms_processes ();
2027 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2028 #ifdef HAVE_X_WINDOWS
2029 /* It's not safe to call intern here. Maybe we are crashing. */
2030 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2031 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2032 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2034 Fx_close_current_connection ();
2035 #endif /* HAVE_X_WINDOWS */
2039 /* There is a tendency for a SIGIO signal to arrive within exit,
2040 and cause a SIGHUP because the input descriptor is already closed. */
2042 signal (SIGIO
, SIG_IGN
);
2049 /* Do this only if terminating normally, we want glyph matrices
2050 etc. in a core dump. */
2051 if (sig
== 0 || sig
== SIGTERM
)
2053 check_glyph_memory ();
2054 check_message_stack ();
2068 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2069 doc
: /* Dump current state of Emacs into data file FILENAME.
2070 This function exists on systems that use HAVE_SHM. */)
2072 Lisp_Object filename
;
2074 extern char my_edata
[];
2078 CHECK_STRING (filename
);
2079 filename
= Fexpand_file_name (filename
, Qnil
);
2082 Vpurify_flag
= Qnil
;
2085 /* Tell malloc where start of impure now is. */
2086 /* Also arrange for warnings when nearly out of space. */
2087 #ifndef SYSTEM_MALLOC
2088 memory_warnings (my_edata
, malloc_warning
);
2090 map_out_data (SDATA (filename
));
2097 #else /* not HAVE_SHM */
2099 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2100 doc
: /* Dump current state of Emacs into executable file FILENAME.
2101 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2102 This is used in the file `loadup.el' when building Emacs.
2104 You must run Emacs in batch mode in order to dump it. */)
2106 Lisp_Object filename
, symfile
;
2108 extern char my_edata
[];
2111 int count
= SPECPDL_INDEX ();
2115 if (! noninteractive
)
2116 error ("Dumping Emacs works only in batch mode");
2118 /* Bind `command-line-processed' to nil before dumping,
2119 so that the dumped Emacs will process its command line
2120 and set up to work with X windows if appropriate. */
2121 symbol
= intern ("command-line-processed");
2122 specbind (symbol
, Qnil
);
2124 CHECK_STRING (filename
);
2125 filename
= Fexpand_file_name (filename
, Qnil
);
2126 if (!NILP (symfile
))
2128 CHECK_STRING (symfile
);
2129 if (SCHARS (symfile
))
2130 symfile
= Fexpand_file_name (symfile
, Qnil
);
2134 Vpurify_flag
= Qnil
;
2137 set_time_zone_rule (dump_tz
);
2138 #ifndef LOCALTIME_CACHE
2139 /* Force a tz reload, since set_time_zone_rule doesn't. */
2146 mapout_data (SDATA (filename
));
2148 /* Tell malloc where start of impure now is. */
2149 /* Also arrange for warnings when nearly out of space. */
2150 #ifndef SYSTEM_MALLOC
2152 /* On Windows, this was done before dumping, and that once suffices.
2153 Meanwhile, my_edata is not valid on Windows. */
2154 memory_warnings (my_edata
, malloc_warning
);
2155 #endif /* not WINDOWSNT */
2157 #ifdef DOUG_LEA_MALLOC
2158 malloc_state_ptr
= malloc_get_state ();
2161 #ifdef USE_MMAP_FOR_BUFFERS
2164 unexec (SDATA (filename
),
2165 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2166 #ifdef USE_MMAP_FOR_BUFFERS
2169 #ifdef DOUG_LEA_MALLOC
2170 free (malloc_state_ptr
);
2172 #endif /* not VMS */
2176 return unbind_to (count
, Qnil
);
2179 #endif /* not HAVE_SHM */
2181 #endif /* not CANNOT_DUMP */
2184 /* Recover from setlocale (LC_ALL, ""). */
2188 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2189 so that numbers are read and printed properly for Emacs Lisp. */
2190 setlocale (LC_NUMERIC
, "C");
2193 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2196 synchronize_locale (category
, plocale
, desired_locale
)
2198 Lisp_Object
*plocale
;
2199 Lisp_Object desired_locale
;
2201 if (! EQ (*plocale
, desired_locale
))
2203 *plocale
= desired_locale
;
2204 setlocale (category
, (STRINGP (desired_locale
)
2205 ? (char *)(SDATA (desired_locale
))
2210 /* Set system time locale to match Vsystem_time_locale, if possible. */
2212 synchronize_system_time_locale ()
2214 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2215 Vsystem_time_locale
);
2218 /* Set system messages locale to match Vsystem_messages_locale, if
2221 synchronize_system_messages_locale ()
2224 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2225 Vsystem_messages_locale
);
2228 #endif /* HAVE_SETLOCALE */
2235 decode_env_path (evarname
, defalt
)
2236 char *evarname
, *defalt
;
2238 register char *path
, *p
;
2239 Lisp_Object lpath
, element
, tem
;
2241 /* It's okay to use getenv here, because this function is only used
2242 to initialize variables when Emacs starts up, and isn't called
2245 path
= (char *) getenv (evarname
);
2251 /* Ensure values from the environment use the proper directory separator. */
2254 p
= alloca (strlen (path
) + 1);
2258 if ('/' == DIRECTORY_SEP
)
2259 dostounix_filename (path
);
2261 unixtodos_filename (path
);
2267 p
= index (path
, SEPCHAR
);
2268 if (!p
) p
= path
+ strlen (path
);
2269 element
= (p
- path
? make_string (path
, p
- path
)
2270 : build_string ("."));
2272 /* Add /: to the front of the name
2273 if it would otherwise be treated as magic. */
2274 tem
= Ffind_file_name_handler (element
, Qt
);
2276 /* However, if the handler says "I'm safe",
2277 don't bother adding /:. */
2281 prop
= Fget (tem
, intern ("safe-magic"));
2287 element
= concat2 (build_string ("/:"), element
);
2289 lpath
= Fcons (element
, lpath
);
2295 return Fnreverse (lpath
);
2301 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2302 staticpro (&Qfile_name_handler_alist
);
2306 defsubr (&Sdump_emacs_data
);
2308 defsubr (&Sdump_emacs
);
2312 defsubr (&Skill_emacs
);
2314 defsubr (&Sinvocation_name
);
2315 defsubr (&Sinvocation_directory
);
2317 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2318 doc
: /* Args passed by shell to Emacs, as a list of strings.
2319 Many arguments are deleted from the list as they are processed. */);
2321 DEFVAR_LISP ("system-type", &Vsystem_type
,
2322 doc
: /* Value is symbol indicating type of operating system you are using. */);
2323 Vsystem_type
= intern (SYSTEM_TYPE
);
2325 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2326 doc
: /* Value is string indicating configuration Emacs was built for.
2327 On MS-Windows, the value reflects the OS flavor and version on which
2328 Emacs is running. */);
2329 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2331 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2332 doc
: /* String containing the configuration options Emacs was built with. */);
2333 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2335 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2336 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2338 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2339 doc
: /* Hook to be run when kill-emacs is called.
2340 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2341 in other similar situations), functions placed on this hook should not
2342 expect to be able to interact with the user. To ask for confirmation,
2343 see `kill-emacs-query-functions' instead.
2345 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2346 Vkill_emacs_hook
= Qnil
;
2348 empty_string
= build_string ("");
2349 staticpro (&empty_string
);
2352 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2353 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2354 Vsignal_USR1_hook
= Qnil
;
2356 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2357 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2358 Vsignal_USR2_hook
= Qnil
;
2363 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2364 doc
: /* Priority for Emacs to run at.
2365 This value is effective only if set before Emacs is dumped,
2366 and only if the Emacs executable is installed with setuid to permit
2367 it to change priority. (Emacs sets its uid back to the real uid.)
2368 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2369 before you compile Emacs, to enable the code for this feature. */);
2372 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2373 doc
: /* The directory separator in search paths, as a string. */);
2376 Vpath_separator
= make_string (&c
, 1);
2379 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2380 doc
: /* The program name that was used to run Emacs.
2381 Any directory names are omitted. */);
2383 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2384 doc
: /* The directory in which the Emacs executable was found, to run it.
2385 The value is nil if that directory's name is not known. */);
2387 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2388 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2389 This is non-nil when we can't find those directories in their standard
2390 installed locations, but we can find them
2391 near where the Emacs executable was found. */);
2392 Vinstallation_directory
= Qnil
;
2394 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2395 doc
: /* System locale for messages. */);
2396 Vsystem_messages_locale
= Qnil
;
2398 DEFVAR_LISP ("previous-system-messages-locale",
2399 &Vprevious_system_messages_locale
,
2400 doc
: /* Most recently used system locale for messages. */);
2401 Vprevious_system_messages_locale
= Qnil
;
2403 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2404 doc
: /* System locale for time. */);
2405 Vsystem_time_locale
= Qnil
;
2407 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2408 doc
: /* Most recently used system locale for time. */);
2409 Vprevious_system_time_locale
= Qnil
;
2412 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2413 (do not change this comment) */