1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,03,2004
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. */
95 int gdb_use_union
= 0;
97 int gdb_use_union
= 1;
99 EMACS_INT gdb_valbits
= VALBITS
;
100 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
102 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
104 EMACS_INT gdb_data_seg_bits
= 0;
106 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
107 EMACS_INT gdb_array_mark_flag
= ARRAY_MARK_FLAG
;
109 /* Command line args from shell, as list of strings. */
110 Lisp_Object Vcommand_line_args
;
112 /* The name under which Emacs was invoked, with any leading directory
114 Lisp_Object Vinvocation_name
;
116 /* The directory name from which Emacs was invoked. */
117 Lisp_Object Vinvocation_directory
;
119 /* The directory name in which to find subdirs such as lisp and etc.
120 nil means get them only from PATH_LOADSEARCH. */
121 Lisp_Object Vinstallation_directory
;
123 /* Hook run by `kill-emacs' before it does really anything. */
124 Lisp_Object Vkill_emacs_hook
;
126 /* An empty lisp string. To avoid having to build any other. */
127 Lisp_Object empty_string
;
130 /* Hooks for signal USR1 and USR2 handling. */
131 Lisp_Object Vsignal_USR1_hook
;
133 Lisp_Object Vsignal_USR2_hook
;
137 /* Search path separator. */
138 Lisp_Object Vpath_separator
;
140 /* Set nonzero after Emacs has started up the first time.
141 Prevents reinitialization of the Lisp world and keymaps
142 on subsequent starts. */
145 #ifdef DOUG_LEA_MALLOC
146 /* Preserves a pointer to the memory allocated that copies that
147 static data inside glibc's malloc. */
148 void *malloc_state_ptr
;
149 /* From glibc, a routine that returns a copy of the malloc internal state. */
150 extern void *malloc_get_state ();
151 /* From glibc, a routine that overwrites the malloc internal state. */
152 extern void malloc_set_state ();
153 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
154 dumping. Used to work around a bug in glibc's malloc. */
155 int malloc_using_checking
;
158 /* Variable whose value is symbol giving operating system type. */
159 Lisp_Object Vsystem_type
;
161 /* Variable whose value is string giving configuration built for. */
162 Lisp_Object Vsystem_configuration
;
164 /* Variable whose value is string giving configuration options,
165 for use when reporting bugs. */
166 Lisp_Object Vsystem_configuration_options
;
168 Lisp_Object Qfile_name_handler_alist
;
170 /* Current and previous system locales for messages and time. */
171 Lisp_Object Vsystem_messages_locale
;
172 Lisp_Object Vprevious_system_messages_locale
;
173 Lisp_Object Vsystem_time_locale
;
174 Lisp_Object Vprevious_system_time_locale
;
176 /* If non-zero, emacs should not attempt to use a window-specific code,
177 but instead should use the virtual terminal under which it was started. */
178 int inhibit_window_system
;
180 /* If nonzero, set Emacs to run at this priority. This is also used
181 in child_setup and sys_suspend to make sure subshells run at normal
182 priority; those functions have their own extern declaration. */
183 EMACS_INT emacs_priority
;
185 /* If non-zero, a filter or a sentinel is running. Tested to save the match
186 data on the first attempt to change it inside asynchronous code. */
187 int running_asynch_code
;
191 extern int inherited_pgroup
;
194 #ifdef HAVE_X_WINDOWS
195 /* If non-zero, -d was specified, meaning we're using some window system. */
199 /* An address near the bottom of the stack.
200 Tells GC how to save a copy of the stack. */
203 #ifdef HAVE_WINDOW_SYSTEM
204 extern Lisp_Object Vwindow_system
;
205 #endif /* HAVE_WINDOW_SYSTEM */
207 extern Lisp_Object Vauto_save_list_file_name
;
209 extern Lisp_Object Vinhibit_redisplay
;
211 #ifdef USG_SHARED_LIBRARIES
212 /* If nonzero, this is the place to put the end of the writable segment
215 unsigned int bss_end
= 0;
218 /* Nonzero means running Emacs without interactive terminal. */
222 /* Value of Lisp variable `noninteractive'.
223 Normally same as C variable `noninteractive'
224 but nothing terrible happens if user sets this one. */
228 /* Save argv and argc. */
232 static void sort_args ();
233 void syms_of_emacs ();
235 /* MSVC needs each string be shorter than 2048 bytes, so the usage
236 strings below are split to not overflow this limit. */
238 Usage: %s [OPTION-OR-FILENAME]...\n\
240 Run Emacs, the extensible, customizable, self-documenting real-time\n\
241 display editor. The recommended way to start Emacs for normal editing\n\
242 is with no options at all.\n\
244 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
245 read the main documentation for these command-line arguments.\n\
247 Initialization options:\n\
249 --batch do not do interactive display; implies -q\n\
250 --debug-init enable Emacs Lisp debugger for init file\n\
251 --display, -d DISPLAY use X server DISPLAY\n\
252 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
253 --no-desktop do not load a saved desktop\n\
254 --no-init-file, -q load neither ~/.emacs nor default.el\n\
255 --no-shared-memory, -nl do not use shared memory\n\
256 --no-site-file do not load site-start.el\n\
257 --no-splash do not display a splash screen on startup\n\
258 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
259 --script FILE run FILE as an Emacs Lisp script\n\
260 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
261 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
262 --user, -u USER load ~USER/.emacs instead of your own\n\
268 FILE visit FILE using find-file\n\
269 +LINE FILE visit FILE using find-file, then go to line LINE\n\
270 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
272 --directory, -L DIR add DIR to variable load-path\n\
273 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
274 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
275 --file FILE visit FILE using find-file\n\
276 --find-file FILE visit FILE using find-file\n\
277 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
278 --insert FILE insert contents of FILE into current buffer\n\
279 --kill exit without asking for confirmation\n\
280 --load, -l FILE load Emacs Lisp FILE using the load function\n\
281 --visit FILE visit FILE using find-file\n\
287 --background-color, -bg COLOR window background color\n\
288 --border-color, -bd COLOR main border color\n\
289 --border-width, -bw WIDTH width of main border\n\
290 --color MODE color mode for character terminals;\n\
291 MODE defaults to `auto', and can also\n\
292 be `never', `auto', `always',\n\
293 or a mode name like `ansi8'\n\
294 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
295 --font, -fn FONT default font; must be fixed-width\n\
296 --foreground-color, -fg COLOR window foreground color\n\
297 --fullheight, -fh make the first frame high as the screen\n\
298 --fullscreen, -fs make first frame fullscreen\n\
299 --fullwidth, -fw make the first frame wide as the screen\n\
300 --geometry, -g GEOMETRY window geometry\n\
301 --horizontal-scroll-bars, -hb enable horizontal scroll bars\n\
302 --icon-type, -i use picture of gnu for Emacs icon\n\
303 --iconic start Emacs in iconified state\n\
304 --internal-border, -ib WIDTH width between text and main border\n\
305 --line-spacing, -lsp PIXELS additional space to put between lines\n\
306 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
307 --name NAME title for initial Emacs frame\n\
308 --reverse-video, -r, -rv switch foreground and background\n\
309 --title, -T TITLE title for initial Emacs frame\n\
310 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
311 --xrm XRESOURCES set additional X resources\n\
312 --help display this help and exit\n\
313 --version output version information and exit\n\
315 You can generally also specify long option names with a single -; for\n\
316 example, -batch as well as --batch. You can use any unambiguous\n\
317 abbreviation for a --option.\n\
319 Various environment variables and window system resources also affect\n\
320 Emacs' operation. See the main documentation.\n\
324 Report bugs to %s. First, please see the Bugs\n\
325 section of the Emacs manual or the file BUGS.\n"
328 /* Signal code for the fatal signal that was received. */
329 int fatal_error_code
;
331 /* Nonzero if handling a fatal error already. */
332 int fatal_error_in_progress
;
334 /* If non-null, call this function from fatal_error_signal before
335 committing suicide. */
337 void (*fatal_error_signal_hook
) P_ ((void));
342 handle_USR1_signal (sig
)
345 struct input_event buf
;
347 bzero (&buf
, sizeof buf
);
348 buf
.kind
= USER_SIGNAL_EVENT
;
349 buf
.frame_or_window
= selected_frame
;
351 kbd_buffer_store_event (&buf
);
357 handle_USR2_signal (sig
)
360 struct input_event buf
;
362 bzero (&buf
, sizeof buf
);
363 buf
.kind
= USER_SIGNAL_EVENT
;
365 buf
.frame_or_window
= selected_frame
;
367 kbd_buffer_store_event (&buf
);
371 /* Handle bus errors, invalid instruction, etc. */
373 fatal_error_signal (sig
)
376 fatal_error_code
= sig
;
377 signal (sig
, SIG_DFL
);
379 TOTALLY_UNBLOCK_INPUT
;
381 /* If fatal error occurs in code below, avoid infinite recursion. */
382 if (! fatal_error_in_progress
)
384 fatal_error_in_progress
= 1;
386 shut_down_emacs (sig
, 0, Qnil
);
390 LIB$
STOP (SS$_ABORT
);
392 /* Signal the same code; this time it will really be fatal.
393 Remember that since we're in a signal handler, the signal we're
394 going to send is probably blocked, so we have to unblock it if we
395 want to really receive it. */
397 sigunblock (sigmask (fatal_error_code
));
400 if (fatal_error_signal_hook
)
401 fatal_error_signal_hook ();
403 kill (getpid (), fatal_error_code
);
409 /* Handler for SIGDANGER. */
411 memory_warning_signal (sig
)
414 signal (sig
, memory_warning_signal
);
416 malloc_warning ("Operating system warns that virtual memory is running low.\n");
418 /* It might be unsafe to call do_auto_save now. */
419 force_auto_save_soon ();
423 /* We define abort, rather than using it from the library,
424 so that GDB can return from a breakpoint here.
425 MSDOS has its own definition in msdos.c. */
427 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
429 #ifndef ABORT_RETURN_TYPE
430 #define ABORT_RETURN_TYPE void
436 kill (getpid (), SIGABRT
);
437 /* This shouldn't be executed, but it prevents a warning. */
443 /* Code for dealing with Lisp access to the Unix command line. */
446 init_cmdargs (argc
, argv
, skip_args
)
452 Lisp_Object name
, dir
, tem
;
453 int count
= SPECPDL_INDEX ();
454 Lisp_Object raw_name
;
459 raw_name
= build_string (argv
[0]);
461 /* Add /: to the front of the name
462 if it would otherwise be treated as magic. */
463 tem
= Ffind_file_name_handler (raw_name
, Qt
);
465 raw_name
= concat2 (build_string ("/:"), raw_name
);
467 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
468 Vinvocation_directory
= Ffile_name_directory (raw_name
);
470 /* If we got no directory in argv[0], search PATH to find where
471 Emacs actually came from. */
472 if (NILP (Vinvocation_directory
))
475 int yes
= openp (Vexec_path
, Vinvocation_name
,
476 Vexec_suffixes
, &found
, make_number (X_OK
));
479 /* Add /: to the front of the name
480 if it would otherwise be treated as magic. */
481 tem
= Ffind_file_name_handler (found
, Qt
);
483 found
= concat2 (build_string ("/:"), found
);
484 Vinvocation_directory
= Ffile_name_directory (found
);
488 if (!NILP (Vinvocation_directory
)
489 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
490 /* Emacs was started with relative path, like ./emacs.
492 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
494 Vinstallation_directory
= Qnil
;
496 if (!NILP (Vinvocation_directory
))
498 dir
= Vinvocation_directory
;
499 name
= Fexpand_file_name (Vinvocation_name
, dir
);
502 Lisp_Object tem
, lib_src_exists
;
503 Lisp_Object etc_exists
, info_exists
;
505 /* See if dir contains subdirs for use by Emacs.
506 Check for the ones that would exist in a build directory,
507 not including lisp and info. */
508 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
509 lib_src_exists
= Ffile_exists_p (tem
);
512 /* MSDOS installations frequently remove lib-src, but we still
513 must set installation-directory, or else info won't find
514 its files (it uses the value of installation-directory). */
515 tem
= Fexpand_file_name (build_string ("info"), dir
);
516 info_exists
= Ffile_exists_p (tem
);
521 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
523 tem
= Fexpand_file_name (build_string ("etc"), dir
);
524 etc_exists
= Ffile_exists_p (tem
);
525 if (!NILP (etc_exists
))
527 Vinstallation_directory
528 = Ffile_name_as_directory (dir
);
533 /* See if dir's parent contains those subdirs. */
534 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
535 lib_src_exists
= Ffile_exists_p (tem
);
539 /* See the MSDOS commentary above. */
540 tem
= Fexpand_file_name (build_string ("../info"), dir
);
541 info_exists
= Ffile_exists_p (tem
);
546 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
548 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
549 etc_exists
= Ffile_exists_p (tem
);
550 if (!NILP (etc_exists
))
552 tem
= Fexpand_file_name (build_string (".."), dir
);
553 Vinstallation_directory
554 = Ffile_name_as_directory (tem
);
559 /* If the Emacs executable is actually a link,
560 next try the dir that the link points into. */
561 tem
= Ffile_symlink_p (name
);
564 name
= Fexpand_file_name (tem
, dir
);
565 dir
= Ffile_name_directory (name
);
572 Vcommand_line_args
= Qnil
;
574 for (i
= argc
- 1; i
>= 0; i
--)
576 if (i
== 0 || i
> skip_args
)
578 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
581 unbind_to (count
, Qnil
);
584 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
585 doc
: /* Return the program name that was used to run Emacs.
586 Any directory names are omitted. */)
589 return Fcopy_sequence (Vinvocation_name
);
592 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
594 doc
: /* Return the directory name in which the Emacs executable was located. */)
597 return Fcopy_sequence (Vinvocation_directory
);
602 #ifdef LINK_CRTL_SHARE
603 #ifdef SHARABLE_LIB_BUG
604 extern noshare
char **environ
;
605 #endif /* SHARABLE_LIB_BUG */
606 #endif /* LINK_CRTL_SHARE */
610 /* A valid but unlikely value for the TZ environment value.
611 It is OK (though a bit slower) if the user actually chooses this value. */
612 static char dump_tz
[] = "UtC0";
615 #ifndef ORDINARY_LINK
616 /* We don't include crtbegin.o and crtend.o in the link,
617 so these functions and variables might be missed.
618 Provide dummy definitions to avoid error.
619 (We don't have any real constructors or destructors.) */
621 #ifndef GCC_CTORS_IN_LIBC
622 void __do_global_ctors ()
624 void __do_global_ctors_aux ()
626 void __do_global_dtors ()
628 /* GNU/Linux has a bug in its library; avoid an error. */
630 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
632 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
633 #endif /* GCC_CTORS_IN_LIBC */
636 #endif /* __GNUC__ */
637 #endif /* ORDINARY_LINK */
639 /* Test whether the next argument in ARGV matches SSTR or a prefix of
640 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
641 (the argument is supposed to have a value) store in *VALPTR either
642 the next argument or the portion of this one after the equal sign.
643 ARGV is read starting at position *SKIPPTR; this index is advanced
644 by the number of arguments used.
646 Too bad we can't just use getopt for all of this, but we don't have
647 enough information to do it right. */
650 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
663 /* Don't access argv[argc]; give up in advance. */
664 if (argc
<= *skipptr
+ 1)
667 arg
= argv
[*skipptr
+1];
670 if (strcmp (arg
, sstr
) == 0)
674 *valptr
= argv
[*skipptr
+2];
681 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
682 ? p
- arg
: strlen (arg
));
683 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
685 else if (valptr
== NULL
)
696 else if (argv
[*skipptr
+2] != NULL
)
698 *valptr
= argv
[*skipptr
+2];
708 #ifdef DOUG_LEA_MALLOC
710 /* malloc can be invoked even before main (e.g. by the dynamic
711 linker), so the dumped malloc state must be restored as early as
712 possible using this special hook. */
715 malloc_initialize_hook ()
718 extern char **environ
;
723 if (!malloc_using_checking
)
724 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
725 ignored if the heap to be restored was constructed without
726 malloc checking. Can't use unsetenv, since that calls malloc. */
730 for (p
= environ
; p
&& *p
; p
++)
731 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
740 malloc_set_state (malloc_state_ptr
);
741 free (malloc_state_ptr
);
744 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
747 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
749 #endif /* DOUG_LEA_MALLOC */
752 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
753 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
755 /* This function is used to determine an address to which bug report should
759 bug_reporting_address ()
765 temp
= Fsymbol_value (intern ("emacs-version"));
767 /* When `emacs-version' is invalid, use normal address. */
769 return REPORT_EMACS_BUG_ADDRESS
;
771 string
= SDATA (temp
);
773 /* Count dots in `emacs-version'. */
781 /* When `emacs-version' has at least three dots, it is development or
782 pretest version of Emacs. */
783 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
803 char stack_bottom_variable
;
804 int do_initial_setlocale
;
809 #ifdef HAVE_SETRLIMIT
816 extern Lisp_Object
*stack_base
;
820 #ifdef LINUX_SBRK_BUG
824 #ifdef RUN_TIME_REMAP
826 run_time_remap (argv
[0]);
831 unexec_init_emacs_zone ();
834 sort_args (argc
, argv
);
836 while (argv
[argc
]) argc
++;
838 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
839 /* We don't know the version number unless this is a dumped Emacs.
840 So ignore --version otherwise. */
844 tem
= Fsymbol_value (intern ("emacs-version"));
847 fprintf (stderr
, "Invalid value of `emacs-version'\n");
852 printf ("GNU Emacs %s\n", SDATA (tem
));
853 printf ("Copyright (C) 2004 Free Software Foundation, Inc.\n");
854 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
855 printf ("You may redistribute copies of Emacs\n");
856 printf ("under the terms of the GNU General Public License.\n");
857 printf ("For more information about these matters, ");
858 printf ("see the file named COPYING.\n");
863 /* Map in shared memory, if we are using that. */
865 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
868 /* The shared memory was just restored, which clobbered this. */
874 /* The shared memory was just restored, which clobbered this. */
881 extern int malloc_cookie
;
882 /* This helps out unexnext.c. */
884 if (malloc_jumpstart (malloc_cookie
) != 0)
885 printf ("malloc jumpstart failed!\n");
890 /* Skip process serial number passed in the form -psn_x_y as
891 command-line argument. */
892 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
897 /* If -map specified, map the data file in. */
900 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &file
, &skip_args
))
904 #ifdef LINK_CRTL_SHARE
905 #ifdef SHARABLE_LIB_BUG
906 /* Bletcherous shared libraries! */
908 stdin
= fdopen (0, "r");
910 stdout
= fdopen (1, "w");
912 stderr
= fdopen (2, "w");
915 #endif /* SHARABLE_LIB_BUG */
916 #endif /* LINK_CRTL_SHARE */
919 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
920 /* Extend the stack space available.
921 Don't do that if dumping, since some systems (e.g. DJGPP)
922 might define a smaller stack limit at that time. */
925 && (!noninteractive
|| initialized
)
927 && !getrlimit (RLIMIT_STACK
, &rlim
))
930 extern int re_max_failures
;
931 /* Approximate the amount regex.c needs per unit of re_max_failures. */
932 int ratio
= 20 * sizeof (char *);
933 /* Then add 33% to cover the size of the smaller stacks that regex.c
934 successively allocates and discards, on its way to the maximum. */
936 /* Add in some extra to cover
937 what we're likely to use for other reasons. */
938 newlim
= re_max_failures
* ratio
+ 200000;
940 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
941 stack allocation routine for new process that the allocation
942 fails if stack limit is not on page boundary. So, round up the
943 new limit to page boundary. */
944 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
946 if (newlim
> rlim
.rlim_max
)
948 newlim
= rlim
.rlim_max
;
949 /* Don't let regex.c overflow the stack we have. */
950 re_max_failures
= (newlim
- 200000) / ratio
;
952 if (rlim
.rlim_cur
< newlim
)
953 rlim
.rlim_cur
= newlim
;
955 setrlimit (RLIMIT_STACK
, &rlim
);
957 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
959 /* Record (approximately) where the stack begins. */
960 stack_bottom
= &stack_bottom_variable
;
962 #ifdef USG_SHARED_LIBRARIES
964 brk ((void *)bss_end
);
969 #ifndef SYSTEM_MALLOC
970 /* Arrange to get warning messages as memory fills up. */
971 memory_warnings (0, malloc_warning
);
973 /* Call malloc at least once, to run the initial __malloc_hook.
974 Also call realloc and free for consistency. */
975 free (realloc (malloc (4), 4));
977 /* Arrange to disable interrupt input inside malloc etc. */
978 uninterrupt_malloc ();
979 #endif /* not SYSTEM_MALLOC */
981 #if defined (MSDOS) || defined (WINDOWSNT)
982 /* We do all file input/output as binary files. When we need to translate
983 newlines, we do that manually. */
985 #endif /* MSDOS || WINDOWSNT */
989 if (!isatty (fileno (stdin
)))
990 setmode (fileno (stdin
), O_BINARY
);
991 if (!isatty (fileno (stdout
)))
994 setmode (fileno (stdout
), O_BINARY
);
996 #else /* not __DJGPP__ >= 2 */
997 (stdin
)->_flag
&= ~_IOTEXT
;
998 (stdout
)->_flag
&= ~_IOTEXT
;
999 (stderr
)->_flag
&= ~_IOTEXT
;
1000 #endif /* not __DJGPP__ >= 2 */
1003 #ifdef SET_EMACS_PRIORITY
1005 nice (emacs_priority
);
1007 #endif /* SET_EMACS_PRIORITY */
1009 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1010 The build procedure uses this while dumping, to ensure that the
1011 dumped Emacs does not have its system locale tables initialized,
1012 as that might cause screwups when the dumped Emacs starts up. */
1014 char *lc_all
= getenv ("LC_ALL");
1015 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1018 /* Set locale now, so that initial error messages are localized properly.
1019 fixup_locale must wait until later, since it builds strings. */
1020 if (do_initial_setlocale
)
1021 setlocale (LC_ALL
, "");
1023 #ifdef EXTRA_INITIALIZE
1027 inhibit_window_system
= 0;
1029 /* Handle the -t switch, which specifies filename to use as terminal. */
1033 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1038 result
= emacs_open (term
, O_RDWR
, 0);
1041 char *errstring
= strerror (errno
);
1042 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1048 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1051 fprintf (stderr
, "Using %s\n", term
);
1052 #ifdef HAVE_WINDOW_SYSTEM
1053 inhibit_window_system
= 1; /* -t => -nw */
1060 /* Command line option --no-windows is deprecated and thus not mentioned
1061 in the manual and usage informations. */
1062 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1063 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1064 inhibit_window_system
= 1;
1066 /* Handle the -batch switch, which means don't do interactive display. */
1068 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1070 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1072 noninteractive
= 1; /* Set batch mode. */
1073 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1074 handled in proper sequence. */
1075 argv
[skip_args
- 1] = "-l";
1077 sort_args (argc
, argv
);
1080 /* Handle the --help option, which gives a usage message. */
1081 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1083 printf (USAGE1
, argv
[0], USAGE2
);
1085 printf (USAGE4
, bug_reporting_address ());
1089 if (! noninteractive
)
1094 inherited_pgroup
= EMACS_GETPGRP (0);
1095 setpgrp (0, getpid ());
1098 #if defined (USG5) && defined (INTERRUPT_INPUT)
1106 /* Don't catch SIGHUP if dumping. */
1113 sigblock (sigmask (SIGHUP
));
1114 /* In --batch mode, don't catch SIGHUP if already ignored.
1115 That makes nohup work. */
1116 if (! noninteractive
1117 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1118 signal (SIGHUP
, fatal_error_signal
);
1119 sigunblock (sigmask (SIGHUP
));
1124 ! noninteractive
|| initialized
1130 /* Don't catch these signals in batch mode if dumping.
1131 On some machines, this sets static data that would make
1132 signal fail to work right when the dumped Emacs is run. */
1133 signal (SIGQUIT
, fatal_error_signal
);
1134 signal (SIGILL
, fatal_error_signal
);
1135 signal (SIGTRAP
, fatal_error_signal
);
1137 signal (SIGUSR1
, handle_USR1_signal
);
1139 signal (SIGUSR2
, handle_USR2_signal
);
1143 signal (SIGABRT
, fatal_error_signal
);
1146 signal (SIGHWE
, fatal_error_signal
);
1149 signal (SIGPRE
, fatal_error_signal
);
1152 signal (SIGORE
, fatal_error_signal
);
1155 signal (SIGUME
, fatal_error_signal
);
1158 signal (SIGDLK
, fatal_error_signal
);
1161 signal (SIGCPULIM
, fatal_error_signal
);
1164 /* This is missing on some systems - OS/2, for example. */
1165 signal (SIGIOT
, fatal_error_signal
);
1168 signal (SIGEMT
, fatal_error_signal
);
1170 signal (SIGFPE
, fatal_error_signal
);
1172 signal (SIGBUS
, fatal_error_signal
);
1174 signal (SIGSEGV
, fatal_error_signal
);
1176 signal (SIGSYS
, fatal_error_signal
);
1178 signal (SIGTERM
, fatal_error_signal
);
1180 signal (SIGXCPU
, fatal_error_signal
);
1183 signal (SIGXFSZ
, fatal_error_signal
);
1184 #endif /* SIGXFSZ */
1187 /* This just means available memory is getting low. */
1188 signal (SIGDANGER
, memory_warning_signal
);
1192 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1193 signal (SIGXCPU
, fatal_error_signal
);
1195 signal (SIGIOINT
, fatal_error_signal
);
1197 signal (SIGGRANT
, fatal_error_signal
);
1198 signal (SIGRETRACT
, fatal_error_signal
);
1199 signal (SIGSOUND
, fatal_error_signal
);
1200 signal (SIGMSG
, fatal_error_signal
);
1204 noninteractive1
= noninteractive
;
1206 /* Perform basic initializations (not merely interning symbols). */
1213 init_charset_once ();
1214 init_coding_once ();
1215 init_syntax_once (); /* Create standard syntax table. */
1216 init_category_once (); /* Create standard category table. */
1217 /* Must be done before init_buffer. */
1218 init_casetab_once ();
1219 init_buffer_once (); /* Create buffer table and some buffers. */
1220 init_minibuf_once (); /* Create list of minibuffers. */
1221 /* Must precede init_window_once. */
1223 /* Call syms_of_xfaces before init_window_once because that
1224 function creates Vterminal_frame. Termcap frames now use
1225 faces, and the face implementation uses some symbols as
1228 /* Call syms_of_keyboard before init_window_once because
1229 keyboard sets up symbols that include some face names that
1230 the X support will want to use. This can happen when
1231 CANNOT_DUMP is defined. */
1232 syms_of_keyboard ();
1235 /* init_window_once calls make_terminal_frame which on Mac OS
1236 creates a full-fledge output_mac type frame. This does not
1237 work correctly before syms_of_textprop, syms_of_macfns,
1238 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1239 syms_of_frame, mac_initialize, and init_keyboard have already
1241 syms_of_textprop ();
1255 init_window_once (); /* Init the window system. */
1256 init_fileio_once (); /* Must precede any path manipulation. */
1257 #ifdef HAVE_WINDOW_SYSTEM
1258 init_fringe_once (); /* Swap bitmaps if necessary. */
1259 #endif /* HAVE_WINDOW_SYSTEM */
1264 if (do_initial_setlocale
)
1267 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1268 Vsystem_time_locale
= Vprevious_system_time_locale
;
1273 #ifdef CLASH_DETECTION
1277 running_asynch_code
= 0;
1279 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1280 but not while dumping. */
1283 int inhibit_unibyte
= 0;
1285 /* --multibyte overrides EMACS_UNIBYTE. */
1286 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1287 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1288 /* Ignore EMACS_UNIBYTE before dumping. */
1289 || (!initialized
&& noninteractive
))
1290 inhibit_unibyte
= 1;
1292 /* --unibyte requests that we set up to do everything with single-byte
1293 buffers and strings. We need to handle this before calling
1294 init_lread, init_editfns and other places that generate Lisp strings
1295 from text in the environment. */
1296 /* Actually this shouldn't be needed as of 20.4 in a generally
1297 unibyte environment. As handa says, environment values
1298 aren't now decoded; also existing buffers are now made
1299 unibyte during startup if .emacs sets unibyte. Tested with
1300 8-bit data in environment variables and /etc/passwd, setting
1301 unibyte and Latin-1 in .emacs. -- Dave Love */
1302 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1303 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1304 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1306 Lisp_Object old_log_max
;
1307 Lisp_Object symbol
, tail
;
1309 symbol
= intern ("default-enable-multibyte-characters");
1310 Fset (symbol
, Qnil
);
1314 /* Erase pre-dump messages in *Messages* now so no abort. */
1315 old_log_max
= Vmessage_log_max
;
1316 XSETFASTINT (Vmessage_log_max
, 0);
1317 message_dolog ("", 0, 1, 0);
1318 Vmessage_log_max
= old_log_max
;
1321 for (tail
= Vbuffer_alist
; CONSP (tail
);
1326 buffer
= Fcdr (XCAR (tail
));
1327 /* Verify that all buffers are empty now, as they
1329 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1331 /* It is safe to do this crudely in an empty buffer. */
1332 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1338 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1341 #ifdef HAVE_X_WINDOWS
1342 /* Stupid kludge to catch command-line display spec. We can't
1343 handle this argument entirely in window system dependent code
1344 because we don't even know which window system dependent code
1345 to run until we've recognized this argument. */
1347 char *displayname
= 0;
1348 int count_before
= skip_args
;
1350 /* Skip any number of -d options, but only use the last one. */
1353 int count_before_this
= skip_args
;
1355 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1357 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1362 count_before
= count_before_this
;
1365 /* If we have the form --display=NAME,
1366 convert it into -d name.
1367 This requires inserting a new element into argv. */
1368 if (displayname
!= 0 && skip_args
- count_before
== 1)
1370 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1373 for (j
= 0; j
< count_before
+ 1; j
++)
1375 new[count_before
+ 1] = "-d";
1376 new[count_before
+ 2] = displayname
;
1377 for (j
= count_before
+ 2; j
<argc
; j
++)
1378 new[j
+ 1] = argv
[j
];
1382 /* Change --display to -d, when its arg is separate. */
1383 else if (displayname
!= 0 && skip_args
> count_before
1384 && argv
[count_before
+ 1][1] == '-')
1385 argv
[count_before
+ 1] = "-d";
1387 /* Don't actually discard this arg. */
1388 skip_args
= count_before
;
1392 /* argmatch must not be used after here,
1393 except when bulding temacs
1394 because the -d argument has not been skipped in skip_args. */
1397 /* Call early 'cause init_environment needs it. */
1399 /* Set defaults for several environment variables. */
1401 init_environment (argc
, argv
, skip_args
);
1408 /* Initialize environment from registry settings. */
1409 init_environment (argv
);
1410 init_ntproc (); /* must precede init_editfns. */
1415 init_mac_osx_environment ();
1418 /* egetenv is a pretty low-level facility, which may get called in
1419 many circumstances; it seems flimsy to put off initializing it
1420 until calling init_callproc. */
1421 set_process_environment ();
1422 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1423 if this is not done. Do it after set_process_environment so that we
1424 don't pollute Vprocess_environment. */
1425 /* Setting LANG here will defeat the startup locale processing... */
1430 init_buffer (); /* Init default directory of main buffer. */
1432 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1433 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1437 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1438 Lisp_Object old_log_max
;
1439 old_log_max
= Vmessage_log_max
;
1440 XSETFASTINT (Vmessage_log_max
, 0);
1441 message_dolog ("", 0, 1, 0);
1442 Vmessage_log_max
= old_log_max
;
1445 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1448 /* Intern the names of all standard functions and variables;
1449 define standard keys. */
1453 /* The basic levels of Lisp must come first. */
1454 /* And data must come first of all
1455 for the sake of symbols like error-message. */
1457 /* Called before init_window_once for Mac OS Classic. */
1465 syms_of_floatfns ();
1469 syms_of_bytecode ();
1471 syms_of_casefiddle ();
1473 syms_of_callproc ();
1474 syms_of_category ();
1476 /* Called before init_window_once for Mac OS Classic. */
1481 #ifndef NO_DIR_LIBRARY
1483 #endif /* not NO_DIR_LIBRARY */
1489 syms_of_coding (); /* This should be after syms_of_fileio. */
1490 #ifdef CLASH_DETECTION
1491 syms_of_filelock ();
1492 #endif /* CLASH_DETECTION */
1501 /* Called before init_window_once for Mac OS Classic. */
1512 /* Called before init_window_once for Mac OS Classic. */
1513 syms_of_textprop ();
1515 syms_of_composite ();
1521 #endif /* WINDOWSNT */
1524 #ifdef HAVE_WINDOW_SYSTEM
1527 #endif /* HAVE_WINDOW_SYSTEM */
1528 #ifdef HAVE_X_WINDOWS
1538 #endif /* HAVE_X_WINDOWS */
1543 /* Called before init_window_once for Mac OS Classic. */
1552 syms_of_w32select ();
1555 #endif /* HAVE_NTGUI */
1562 #endif /* HAVE_CARBON */
1572 keys_of_casefiddle ();
1575 keys_of_keyboard ();
1583 Initialization that must be done even if the global variable
1584 initialized is non zero
1587 globals_of_w32fns ();
1588 globals_of_w32menu ();
1589 #endif /* end #ifdef HAVE_NTGUI */
1592 if (!noninteractive
)
1595 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1597 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1600 /* Called before init_window_once for Mac OS Classic. */
1601 init_keyboard (); /* This too must precede init_sys_modes. */
1604 init_vmsproc (); /* And this too. */
1606 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1609 #ifdef HAVE_WINDOW_SYSTEM
1612 #endif /* HAVE_WINDOW_SYSTEM */
1628 /* Handle -l loadup, args passed by Makefile. */
1629 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1630 Vtop_level
= Fcons (intern ("load"),
1631 Fcons (build_string (file
), Qnil
));
1632 /* Unless next switch is -nl, load "loadup.el" first thing. */
1634 Vtop_level
= Fcons (intern ("load"),
1635 Fcons (build_string ("loadup.el"), Qnil
));
1642 /* If the execution TZ happens to be the same as the dump TZ,
1643 change it to some other value and then change it back,
1644 to force the underlying implementation to reload the TZ info.
1645 This is needed on implementations that load TZ info from files,
1646 since the TZ file contents may differ between dump and execution. */
1647 char *tz
= getenv ("TZ");
1648 if (tz
&& !strcmp (tz
, dump_tz
))
1658 /* Set up for profiling. This is known to work on FreeBSD and
1659 GNU/Linux. It might work on some other systems too. Give it a
1660 try and tell us if it works on your system. To compile for
1661 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1662 #if defined (__FreeBSD__) || defined (__linux)
1666 extern void _mcleanup ();
1668 extern void safe_bcopy ();
1669 extern void dump_opcode_frequencies ();
1672 /* This uses safe_bcopy because that function comes first in the
1673 Emacs executable. It might be better to use something that
1674 gives the start of the text segment, but start_of_text is not
1675 defined on all systems now. */
1676 monstartup (safe_bcopy
, &etext
);
1685 #ifdef LOCALTIME_CACHE
1686 /* Some versions of localtime have a bug. They cache the value of the time
1687 zone rather than looking it up every time. Since localtime() is
1688 called to bolt the undumping time into the undumped emacs, this
1689 results in localtime ignoring the TZ environment variable.
1690 This flushes the new TZ value into localtime. */
1692 #endif /* defined (LOCALTIME_CACHE) */
1694 /* Enter editor command loop. This never returns. */
1700 /* Sort the args so we can find the most important ones
1701 at the beginning of argv. */
1703 /* First, here's a table of all the standard options. */
1705 struct standard_args
1713 struct standard_args standard_args
[] =
1715 { "-version", "--version", 150, 0 },
1717 { "-nl", "--no-shared-memory", 140, 0 },
1720 { "-map", "--map-data", 130, 0 },
1722 { "-t", "--terminal", 120, 1 },
1723 { "-nw", "--no-window-system", 110, 0 },
1724 { "-nw", "--no-windows", 110, 0 },
1725 { "-batch", "--batch", 100, 0 },
1726 { "-script", "--script", 100, 1 },
1727 { "-help", "--help", 90, 0 },
1728 { "-no-unibyte", "--no-unibyte", 83, 0 },
1729 { "-multibyte", "--multibyte", 82, 0 },
1730 { "-unibyte", "--unibyte", 81, 0 },
1731 { "-no-multibyte", "--no-multibyte", 80, 0 },
1732 { "-nl", "--no-loadup", 70, 0 },
1733 /* -d must come last before the options handled in startup.el. */
1734 { "-d", "--display", 60, 1 },
1735 { "-display", 0, 60, 1 },
1736 /* Now for the options handled in startup.el. */
1737 { "-q", "--no-init-file", 50, 0 },
1738 { "-no-init-file", 0, 50, 0 },
1739 { "-no-site-file", "--no-site-file", 40, 0 },
1740 { "-no-splash", "--no-splash", 40, 0 },
1741 { "-u", "--user", 30, 1 },
1742 { "-user", 0, 30, 1 },
1743 { "-debug-init", "--debug-init", 20, 0 },
1744 { "-i", "--icon-type", 15, 0 },
1745 { "-itype", 0, 15, 0 },
1746 { "-iconic", "--iconic", 15, 0 },
1747 { "-bg", "--background-color", 10, 1 },
1748 { "-background", 0, 10, 1 },
1749 { "-fg", "--foreground-color", 10, 1 },
1750 { "-foreground", 0, 10, 1 },
1751 { "-bd", "--border-color", 10, 1 },
1752 { "-bw", "--border-width", 10, 1 },
1753 { "-ib", "--internal-border", 10, 1 },
1754 { "-ms", "--mouse-color", 10, 1 },
1755 { "-cr", "--cursor-color", 10, 1 },
1756 { "-fn", "--font", 10, 1 },
1757 { "-font", 0, 10, 1 },
1758 { "-fs", "--fullscreen", 10, 0 },
1759 { "-fw", "--fullwidth", 10, 0 },
1760 { "-fh", "--fullheight", 10, 0 },
1761 { "-g", "--geometry", 10, 1 },
1762 { "-geometry", 0, 10, 1 },
1763 { "-T", "--title", 10, 1 },
1764 { "-title", 0, 10, 1 },
1765 { "-name", "--name", 10, 1 },
1766 { "-xrm", "--xrm", 10, 1 },
1767 { "-r", "--reverse-video", 5, 0 },
1769 { "-reverse", 0, 5, 0 },
1770 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1771 { "-vb", "--vertical-scroll-bars", 5, 0 },
1772 { "-color", "--color", 5, 0},
1773 /* These have the same priority as ordinary file name args,
1774 so they are not reordered with respect to those. */
1775 { "-L", "--directory", 0, 1 },
1776 { "-directory", 0, 0, 1 },
1777 { "-l", "--load", 0, 1 },
1778 { "-load", 0, 0, 1 },
1779 { "-f", "--funcall", 0, 1 },
1780 { "-funcall", 0, 0, 1 },
1781 { "-eval", "--eval", 0, 1 },
1782 { "-execute", "--execute", 0, 1 },
1783 { "-find-file", "--find-file", 0, 1 },
1784 { "-visit", "--visit", 0, 1 },
1785 { "-file", "--file", 0, 1 },
1786 { "-insert", "--insert", 0, 1 },
1787 /* This should be processed after ordinary file name args and the like. */
1788 { "-kill", "--kill", -10, 0 },
1791 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1792 so that the highest priority ones come first.
1793 Do not change the order of elements of equal priority.
1794 If an option takes an argument, keep it and its argument together.
1796 If an option that takes no argument appears more
1797 than once, eliminate all but one copy of it. */
1800 sort_args (argc
, argv
)
1804 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1805 /* For each element of argv,
1806 the corresponding element of options is:
1807 0 for an option that takes no arguments,
1808 1 for an option that takes one argument, etc.
1809 -1 for an ordinary non-option argument. */
1810 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1811 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1813 int incoming_used
= 1;
1817 /* Categorize all the options,
1818 and figure out which argv elts are option arguments. */
1819 for (from
= 1; from
< argc
; from
++)
1823 if (argv
[from
][0] == '-')
1828 /* If we have found "--", don't consider
1829 any more arguments as options. */
1830 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1832 /* Leave the "--", and everything following it, at the end. */
1833 for (; from
< argc
; from
++)
1835 priority
[from
] = -100;
1841 /* Look for a match with a known old-fashioned option. */
1842 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1843 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1845 options
[from
] = standard_args
[i
].nargs
;
1846 priority
[from
] = standard_args
[i
].priority
;
1847 if (from
+ standard_args
[i
].nargs
>= argc
)
1848 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1849 from
+= standard_args
[i
].nargs
;
1853 /* Look for a match with a known long option.
1854 MATCH is -1 if no match so far, -2 if two or more matches so far,
1855 >= 0 (the table index of the match) if just one match so far. */
1856 if (argv
[from
][1] == '-')
1859 thislen
= strlen (argv
[from
]);
1860 equals
= index (argv
[from
], '=');
1862 thislen
= equals
- argv
[from
];
1865 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1866 if (standard_args
[i
].longname
1867 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1876 /* If we found exactly one match, use that. */
1879 options
[from
] = standard_args
[match
].nargs
;
1880 priority
[from
] = standard_args
[match
].priority
;
1881 /* If --OPTION=VALUE syntax is used,
1882 this option uses just one argv element. */
1885 if (from
+ options
[from
] >= argc
)
1886 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1887 from
+= options
[from
];
1894 /* Copy the arguments, in order of decreasing priority, to NEW. */
1896 while (incoming_used
< argc
)
1899 int best_priority
= -9999;
1901 /* Find the highest priority remaining option.
1902 If several have equal priority, take the first of them. */
1903 for (from
= 1; from
< argc
; from
++)
1905 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1907 best_priority
= priority
[from
];
1910 /* Skip option arguments--they are tied to the options. */
1911 if (options
[from
] > 0)
1912 from
+= options
[from
];
1918 /* Copy the highest priority remaining option, with its args, to NEW.
1919 Unless it is a duplicate of the previous one. */
1920 if (! (options
[best
] == 0
1921 && ! strcmp (new[to
- 1], argv
[best
])))
1923 new[to
++] = argv
[best
];
1924 for (i
= 0; i
< options
[best
]; i
++)
1925 new[to
++] = argv
[best
+ i
+ 1];
1928 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1930 /* Clear out this option in ARGV. */
1932 for (i
= 0; i
< options
[best
]; i
++)
1933 argv
[best
+ i
+ 1] = 0;
1936 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1940 bcopy (new, argv
, sizeof (char *) * argc
);
1947 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1948 doc
: /* Exit the Emacs job and kill it.
1949 If ARG is an integer, return ARG as the exit program code.
1950 If ARG is a string, stuff it as keyboard input.
1952 The value of `kill-emacs-hook', if not void,
1953 is a list of functions (of no args),
1954 all of which are called before Emacs is actually killed. */)
1958 struct gcpro gcpro1
;
1965 if (!NILP (Vrun_hooks
) && !noninteractive
)
1966 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1970 /* Is it really necessary to do this deassign
1971 when we are going to exit anyway? */
1976 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1978 /* If we have an auto-save list file,
1979 kill it because we are exiting Emacs deliberately (not crashing).
1980 Do it after shut_down_emacs, which does an auto-save. */
1981 if (STRINGP (Vauto_save_list_file_name
))
1982 unlink (SDATA (Vauto_save_list_file_name
));
1984 exit (INTEGERP (arg
) ? XINT (arg
)
1995 /* Perform an orderly shutdown of Emacs. Autosave any modified
1996 buffers, kill any child processes, clean up the terminal modes (if
1997 we're in the foreground), and other stuff like that. Don't perform
1998 any redisplay; this may be called when Emacs is shutting down in
1999 the background, or after its X connection has died.
2001 If SIG is a signal number, print a message for it.
2003 This is called by fatal signal handlers, X protocol error handlers,
2007 shut_down_emacs (sig
, no_x
, stuff
)
2011 /* Prevent running of hooks from now on. */
2014 /* Don't update display from now on. */
2015 Vinhibit_redisplay
= Qt
;
2017 /* If we are controlling the terminal, reset terminal modes. */
2018 #ifdef EMACS_HAVE_TTY_PGRP
2020 int pgrp
= EMACS_GETPGRP (0);
2023 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2028 if (sig
&& sig
!= SIGTERM
)
2029 fprintf (stderr
, "Fatal error (%d)", sig
);
2037 stuff_buffered_input (stuff
);
2039 kill_buffer_processes (Qnil
);
2040 Fdo_auto_save (Qt
, Qnil
);
2042 #ifdef CLASH_DETECTION
2043 unlock_all_files ();
2047 kill_vms_processes ();
2050 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2051 #ifdef HAVE_X_WINDOWS
2052 /* It's not safe to call intern here. Maybe we are crashing. */
2053 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2054 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2055 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2057 Fx_close_current_connection ();
2058 #endif /* HAVE_X_WINDOWS */
2062 /* There is a tendency for a SIGIO signal to arrive within exit,
2063 and cause a SIGHUP because the input descriptor is already closed. */
2065 signal (SIGIO
, SIG_IGN
);
2072 /* Do this only if terminating normally, we want glyph matrices
2073 etc. in a core dump. */
2074 if (sig
== 0 || sig
== SIGTERM
)
2076 check_glyph_memory ();
2077 check_message_stack ();
2091 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2092 doc
: /* Dump current state of Emacs into data file FILENAME.
2093 This function exists on systems that use HAVE_SHM. */)
2095 Lisp_Object filename
;
2097 extern char my_edata
[];
2101 CHECK_STRING (filename
);
2102 filename
= Fexpand_file_name (filename
, Qnil
);
2105 Vpurify_flag
= Qnil
;
2108 /* Tell malloc where start of impure now is. */
2109 /* Also arrange for warnings when nearly out of space. */
2110 #ifndef SYSTEM_MALLOC
2111 memory_warnings (my_edata
, malloc_warning
);
2113 map_out_data (SDATA (filename
));
2120 #else /* not HAVE_SHM */
2122 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2123 doc
: /* Dump current state of Emacs into executable file FILENAME.
2124 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2125 This is used in the file `loadup.el' when building Emacs.
2127 You must run Emacs in batch mode in order to dump it. */)
2129 Lisp_Object filename
, symfile
;
2131 extern char my_edata
[];
2134 int count
= SPECPDL_INDEX ();
2138 if (! noninteractive
)
2139 error ("Dumping Emacs works only in batch mode");
2141 /* Bind `command-line-processed' to nil before dumping,
2142 so that the dumped Emacs will process its command line
2143 and set up to work with X windows if appropriate. */
2144 symbol
= intern ("command-line-processed");
2145 specbind (symbol
, Qnil
);
2147 CHECK_STRING (filename
);
2148 filename
= Fexpand_file_name (filename
, Qnil
);
2149 if (!NILP (symfile
))
2151 CHECK_STRING (symfile
);
2152 if (SCHARS (symfile
))
2153 symfile
= Fexpand_file_name (symfile
, Qnil
);
2157 Vpurify_flag
= Qnil
;
2160 set_time_zone_rule (dump_tz
);
2161 #ifndef LOCALTIME_CACHE
2162 /* Force a tz reload, since set_time_zone_rule doesn't. */
2169 mapout_data (SDATA (filename
));
2171 /* Tell malloc where start of impure now is. */
2172 /* Also arrange for warnings when nearly out of space. */
2173 #ifndef SYSTEM_MALLOC
2175 /* On Windows, this was done before dumping, and that once suffices.
2176 Meanwhile, my_edata is not valid on Windows. */
2177 memory_warnings (my_edata
, malloc_warning
);
2178 #endif /* not WINDOWSNT */
2180 #ifdef DOUG_LEA_MALLOC
2181 malloc_state_ptr
= malloc_get_state ();
2184 #ifdef USE_MMAP_FOR_BUFFERS
2187 unexec (SDATA (filename
),
2188 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2189 #ifdef USE_MMAP_FOR_BUFFERS
2192 #ifdef DOUG_LEA_MALLOC
2193 free (malloc_state_ptr
);
2195 #endif /* not VMS */
2199 return unbind_to (count
, Qnil
);
2202 #endif /* not HAVE_SHM */
2204 #endif /* not CANNOT_DUMP */
2207 /* Recover from setlocale (LC_ALL, ""). */
2211 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2212 so that numbers are read and printed properly for Emacs Lisp. */
2213 setlocale (LC_NUMERIC
, "C");
2216 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2219 synchronize_locale (category
, plocale
, desired_locale
)
2221 Lisp_Object
*plocale
;
2222 Lisp_Object desired_locale
;
2224 if (! EQ (*plocale
, desired_locale
))
2226 *plocale
= desired_locale
;
2227 setlocale (category
, (STRINGP (desired_locale
)
2228 ? (char *)(SDATA (desired_locale
))
2233 /* Set system time locale to match Vsystem_time_locale, if possible. */
2235 synchronize_system_time_locale ()
2237 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2238 Vsystem_time_locale
);
2241 /* Set system messages locale to match Vsystem_messages_locale, if
2244 synchronize_system_messages_locale ()
2247 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2248 Vsystem_messages_locale
);
2251 #endif /* HAVE_SETLOCALE */
2258 decode_env_path (evarname
, defalt
)
2259 char *evarname
, *defalt
;
2261 register char *path
, *p
;
2262 Lisp_Object lpath
, element
, tem
;
2264 /* It's okay to use getenv here, because this function is only used
2265 to initialize variables when Emacs starts up, and isn't called
2268 path
= (char *) getenv (evarname
);
2274 /* Ensure values from the environment use the proper directory separator. */
2277 p
= alloca (strlen (path
) + 1);
2281 if ('/' == DIRECTORY_SEP
)
2282 dostounix_filename (path
);
2284 unixtodos_filename (path
);
2290 p
= index (path
, SEPCHAR
);
2291 if (!p
) p
= path
+ strlen (path
);
2292 element
= (p
- path
? make_string (path
, p
- path
)
2293 : build_string ("."));
2295 /* Add /: to the front of the name
2296 if it would otherwise be treated as magic. */
2297 tem
= Ffind_file_name_handler (element
, Qt
);
2299 /* However, if the handler says "I'm safe",
2300 don't bother adding /:. */
2304 prop
= Fget (tem
, intern ("safe-magic"));
2310 element
= concat2 (build_string ("/:"), element
);
2312 lpath
= Fcons (element
, lpath
);
2318 return Fnreverse (lpath
);
2324 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2325 staticpro (&Qfile_name_handler_alist
);
2329 defsubr (&Sdump_emacs_data
);
2331 defsubr (&Sdump_emacs
);
2335 defsubr (&Skill_emacs
);
2337 defsubr (&Sinvocation_name
);
2338 defsubr (&Sinvocation_directory
);
2340 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2341 doc
: /* Args passed by shell to Emacs, as a list of strings.
2342 Many arguments are deleted from the list as they are processed. */);
2344 DEFVAR_LISP ("system-type", &Vsystem_type
,
2345 doc
: /* Value is symbol indicating type of operating system you are using. */);
2346 Vsystem_type
= intern (SYSTEM_TYPE
);
2348 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2349 doc
: /* Value is string indicating configuration Emacs was built for.
2350 On MS-Windows, the value reflects the OS flavor and version on which
2351 Emacs is running. */);
2352 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2354 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2355 doc
: /* String containing the configuration options Emacs was built with. */);
2356 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2358 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2359 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2361 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2362 doc
: /* Hook to be run when kill-emacs is called.
2363 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2364 in other similar situations), functions placed on this hook should not
2365 expect to be able to interact with the user. To ask for confirmation,
2366 see `kill-emacs-query-functions' instead.
2368 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2369 Vkill_emacs_hook
= Qnil
;
2371 empty_string
= build_string ("");
2372 staticpro (&empty_string
);
2375 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2376 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2377 Vsignal_USR1_hook
= Qnil
;
2379 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2380 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2381 Vsignal_USR2_hook
= Qnil
;
2386 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2387 doc
: /* Priority for Emacs to run at.
2388 This value is effective only if set before Emacs is dumped,
2389 and only if the Emacs executable is installed with setuid to permit
2390 it to change priority. (Emacs sets its uid back to the real uid.)
2391 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2392 before you compile Emacs, to enable the code for this feature. */);
2395 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2396 doc
: /* The directory separator in search paths, as a string. */);
2399 Vpath_separator
= make_string (&c
, 1);
2402 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2403 doc
: /* The program name that was used to run Emacs.
2404 Any directory names are omitted. */);
2406 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2407 doc
: /* The directory in which the Emacs executable was found, to run it.
2408 The value is nil if that directory's name is not known. */);
2410 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2411 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2412 This is non-nil when we can't find those directories in their standard
2413 installed locations, but we can find them
2414 near where the Emacs executable was found. */);
2415 Vinstallation_directory
= Qnil
;
2417 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2418 doc
: /* System locale for messages. */);
2419 Vsystem_messages_locale
= Qnil
;
2421 DEFVAR_LISP ("previous-system-messages-locale",
2422 &Vprevious_system_messages_locale
,
2423 doc
: /* Most recently used system locale for messages. */);
2424 Vprevious_system_messages_locale
= Qnil
;
2426 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2427 doc
: /* System locale for time. */);
2428 Vsystem_time_locale
= Qnil
;
2430 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2431 doc
: /* Most recently used system locale for time. */);
2432 Vprevious_system_time_locale
= Qnil
;
2435 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2436 (do not change this comment) */