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_character_once ();
1214 init_charset_once ();
1215 init_coding_once ();
1216 init_syntax_once (); /* Create standard syntax table. */
1217 init_category_once (); /* Create standard category table. */
1218 /* Must be done before init_buffer. */
1219 init_casetab_once ();
1220 init_buffer_once (); /* Create buffer table and some buffers. */
1221 init_minibuf_once (); /* Create list of minibuffers. */
1222 /* Must precede init_window_once. */
1224 /* Call syms_of_xfaces before init_window_once because that
1225 function creates Vterminal_frame. Termcap frames now use
1226 faces, and the face implementation uses some symbols as
1229 /* Call syms_of_keyboard before init_window_once because
1230 keyboard sets up symbols that include some face names that
1231 the X support will want to use. This can happen when
1232 CANNOT_DUMP is defined. */
1233 syms_of_keyboard ();
1236 /* init_window_once calls make_terminal_frame which on Mac OS
1237 creates a full-fledge output_mac type frame. This does not
1238 work correctly before syms_of_textprop, syms_of_macfns,
1239 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1240 syms_of_frame, mac_initialize, and init_keyboard have already
1242 syms_of_textprop ();
1256 init_window_once (); /* Init the window system. */
1257 init_fileio_once (); /* Must precede any path manipulation. */
1258 #ifdef HAVE_WINDOW_SYSTEM
1259 init_fringe_once (); /* Swap bitmaps if necessary. */
1260 #endif /* HAVE_WINDOW_SYSTEM */
1265 if (do_initial_setlocale
)
1268 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1269 Vsystem_time_locale
= Vprevious_system_time_locale
;
1274 #ifdef CLASH_DETECTION
1278 running_asynch_code
= 0;
1280 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1281 but not while dumping. */
1284 int inhibit_unibyte
= 0;
1286 /* --multibyte overrides EMACS_UNIBYTE. */
1287 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1288 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1289 /* Ignore EMACS_UNIBYTE before dumping. */
1290 || (!initialized
&& noninteractive
))
1291 inhibit_unibyte
= 1;
1293 /* --unibyte requests that we set up to do everything with single-byte
1294 buffers and strings. We need to handle this before calling
1295 init_lread, init_editfns and other places that generate Lisp strings
1296 from text in the environment. */
1297 /* Actually this shouldn't be needed as of 20.4 in a generally
1298 unibyte environment. As handa says, environment values
1299 aren't now decoded; also existing buffers are now made
1300 unibyte during startup if .emacs sets unibyte. Tested with
1301 8-bit data in environment variables and /etc/passwd, setting
1302 unibyte and Latin-1 in .emacs. -- Dave Love */
1303 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1304 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1305 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1307 Lisp_Object old_log_max
;
1308 Lisp_Object symbol
, tail
;
1310 symbol
= intern ("default-enable-multibyte-characters");
1311 Fset (symbol
, Qnil
);
1315 /* Erase pre-dump messages in *Messages* now so no abort. */
1316 old_log_max
= Vmessage_log_max
;
1317 XSETFASTINT (Vmessage_log_max
, 0);
1318 message_dolog ("", 0, 1, 0);
1319 Vmessage_log_max
= old_log_max
;
1322 for (tail
= Vbuffer_alist
; CONSP (tail
);
1327 buffer
= Fcdr (XCAR (tail
));
1328 /* Make a multibyte buffer unibyte. */
1329 if (BUF_Z_BYTE (XBUFFER (buffer
)) > BUF_Z (XBUFFER (buffer
)))
1331 struct buffer
*current
= current_buffer
;
1333 set_buffer_temp (XBUFFER (buffer
));
1334 Fset_buffer_multibyte (Qnil
);
1335 set_buffer_temp (current
);
1342 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1345 #ifdef HAVE_X_WINDOWS
1346 /* Stupid kludge to catch command-line display spec. We can't
1347 handle this argument entirely in window system dependent code
1348 because we don't even know which window system dependent code
1349 to run until we've recognized this argument. */
1351 char *displayname
= 0;
1352 int count_before
= skip_args
;
1354 /* Skip any number of -d options, but only use the last one. */
1357 int count_before_this
= skip_args
;
1359 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1361 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1366 count_before
= count_before_this
;
1369 /* If we have the form --display=NAME,
1370 convert it into -d name.
1371 This requires inserting a new element into argv. */
1372 if (displayname
!= 0 && skip_args
- count_before
== 1)
1374 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1377 for (j
= 0; j
< count_before
+ 1; j
++)
1379 new[count_before
+ 1] = "-d";
1380 new[count_before
+ 2] = displayname
;
1381 for (j
= count_before
+ 2; j
<argc
; j
++)
1382 new[j
+ 1] = argv
[j
];
1386 /* Change --display to -d, when its arg is separate. */
1387 else if (displayname
!= 0 && skip_args
> count_before
1388 && argv
[count_before
+ 1][1] == '-')
1389 argv
[count_before
+ 1] = "-d";
1391 /* Don't actually discard this arg. */
1392 skip_args
= count_before
;
1396 /* argmatch must not be used after here,
1397 except when bulding temacs
1398 because the -d argument has not been skipped in skip_args. */
1401 /* Call early 'cause init_environment needs it. */
1403 /* Set defaults for several environment variables. */
1405 init_environment (argc
, argv
, skip_args
);
1412 /* Initialize environment from registry settings. */
1413 init_environment (argv
);
1414 init_ntproc (); /* must precede init_editfns. */
1419 init_mac_osx_environment ();
1422 /* egetenv is a pretty low-level facility, which may get called in
1423 many circumstances; it seems flimsy to put off initializing it
1424 until calling init_callproc. */
1425 set_process_environment ();
1426 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1427 if this is not done. Do it after set_process_environment so that we
1428 don't pollute Vprocess_environment. */
1429 /* Setting LANG here will defeat the startup locale processing... */
1434 init_buffer (); /* Init default directory of main buffer. */
1436 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1437 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1441 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1442 Lisp_Object old_log_max
;
1443 old_log_max
= Vmessage_log_max
;
1444 XSETFASTINT (Vmessage_log_max
, 0);
1445 message_dolog ("", 0, 1, 0);
1446 Vmessage_log_max
= old_log_max
;
1449 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1452 /* Intern the names of all standard functions and variables;
1453 define standard keys. */
1457 /* The basic levels of Lisp must come first. */
1458 /* And data must come first of all
1459 for the sake of symbols like error-message. */
1461 /* Called before init_window_once for Mac OS Classic. */
1470 syms_of_floatfns ();
1474 syms_of_bytecode ();
1476 syms_of_casefiddle ();
1478 syms_of_callproc ();
1479 syms_of_category ();
1481 /* Called before init_window_once for Mac OS Classic. */
1484 syms_of_character ();
1487 #ifndef NO_DIR_LIBRARY
1489 #endif /* not NO_DIR_LIBRARY */
1495 syms_of_coding (); /* This should be after syms_of_fileio. */
1496 #ifdef CLASH_DETECTION
1497 syms_of_filelock ();
1498 #endif /* CLASH_DETECTION */
1507 /* Called before init_window_once for Mac OS Classic. */
1518 /* Called before init_window_once for Mac OS Classic. */
1519 syms_of_textprop ();
1521 syms_of_composite ();
1527 #endif /* WINDOWSNT */
1530 #ifdef HAVE_WINDOW_SYSTEM
1533 #endif /* HAVE_WINDOW_SYSTEM */
1534 #ifdef HAVE_X_WINDOWS
1544 #endif /* HAVE_X_WINDOWS */
1549 /* Called before init_window_once for Mac OS Classic. */
1558 syms_of_w32select ();
1561 #endif /* HAVE_NTGUI */
1568 #endif /* HAVE_CARBON */
1578 keys_of_casefiddle ();
1581 keys_of_keyboard ();
1589 Initialization that must be done even if the global variable
1590 initialized is non zero
1593 globals_of_w32fns ();
1594 globals_of_w32menu ();
1595 #endif /* end #ifdef HAVE_NTGUI */
1600 if (!noninteractive
)
1603 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1605 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1608 /* Called before init_window_once for Mac OS Classic. */
1609 init_keyboard (); /* This too must precede init_sys_modes. */
1612 init_vmsproc (); /* And this too. */
1614 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1617 #ifdef HAVE_WINDOW_SYSTEM
1620 #endif /* HAVE_WINDOW_SYSTEM */
1636 /* Handle -l loadup, args passed by Makefile. */
1637 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1638 Vtop_level
= Fcons (intern ("load"),
1639 Fcons (build_string (file
), Qnil
));
1640 /* Unless next switch is -nl, load "loadup.el" first thing. */
1642 Vtop_level
= Fcons (intern ("load"),
1643 Fcons (build_string ("loadup.el"), Qnil
));
1650 /* If the execution TZ happens to be the same as the dump TZ,
1651 change it to some other value and then change it back,
1652 to force the underlying implementation to reload the TZ info.
1653 This is needed on implementations that load TZ info from files,
1654 since the TZ file contents may differ between dump and execution. */
1655 char *tz
= getenv ("TZ");
1656 if (tz
&& !strcmp (tz
, dump_tz
))
1666 /* Set up for profiling. This is known to work on FreeBSD and
1667 GNU/Linux. It might work on some other systems too. Give it a
1668 try and tell us if it works on your system. To compile for
1669 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1670 #if defined (__FreeBSD__) || defined (__linux)
1674 extern void _mcleanup ();
1676 extern void safe_bcopy ();
1677 extern void dump_opcode_frequencies ();
1680 /* This uses safe_bcopy because that function comes first in the
1681 Emacs executable. It might be better to use something that
1682 gives the start of the text segment, but start_of_text is not
1683 defined on all systems now. */
1684 monstartup (safe_bcopy
, &etext
);
1693 #ifdef LOCALTIME_CACHE
1694 /* Some versions of localtime have a bug. They cache the value of the time
1695 zone rather than looking it up every time. Since localtime() is
1696 called to bolt the undumping time into the undumped emacs, this
1697 results in localtime ignoring the TZ environment variable.
1698 This flushes the new TZ value into localtime. */
1700 #endif /* defined (LOCALTIME_CACHE) */
1702 /* Enter editor command loop. This never returns. */
1708 /* Sort the args so we can find the most important ones
1709 at the beginning of argv. */
1711 /* First, here's a table of all the standard options. */
1713 struct standard_args
1721 struct standard_args standard_args
[] =
1723 { "-version", "--version", 150, 0 },
1725 { "-nl", "--no-shared-memory", 140, 0 },
1728 { "-map", "--map-data", 130, 0 },
1730 { "-t", "--terminal", 120, 1 },
1731 { "-nw", "--no-window-system", 110, 0 },
1732 { "-nw", "--no-windows", 110, 0 },
1733 { "-batch", "--batch", 100, 0 },
1734 { "-script", "--script", 100, 1 },
1735 { "-help", "--help", 90, 0 },
1736 { "-no-unibyte", "--no-unibyte", 83, 0 },
1737 { "-multibyte", "--multibyte", 82, 0 },
1738 { "-unibyte", "--unibyte", 81, 0 },
1739 { "-no-multibyte", "--no-multibyte", 80, 0 },
1740 { "-nl", "--no-loadup", 70, 0 },
1741 /* -d must come last before the options handled in startup.el. */
1742 { "-d", "--display", 60, 1 },
1743 { "-display", 0, 60, 1 },
1744 /* Now for the options handled in startup.el. */
1745 { "-q", "--no-init-file", 50, 0 },
1746 { "-no-init-file", 0, 50, 0 },
1747 { "-no-site-file", "--no-site-file", 40, 0 },
1748 { "-no-splash", "--no-splash", 40, 0 },
1749 { "-u", "--user", 30, 1 },
1750 { "-user", 0, 30, 1 },
1751 { "-debug-init", "--debug-init", 20, 0 },
1752 { "-i", "--icon-type", 15, 0 },
1753 { "-itype", 0, 15, 0 },
1754 { "-iconic", "--iconic", 15, 0 },
1755 { "-bg", "--background-color", 10, 1 },
1756 { "-background", 0, 10, 1 },
1757 { "-fg", "--foreground-color", 10, 1 },
1758 { "-foreground", 0, 10, 1 },
1759 { "-bd", "--border-color", 10, 1 },
1760 { "-bw", "--border-width", 10, 1 },
1761 { "-ib", "--internal-border", 10, 1 },
1762 { "-ms", "--mouse-color", 10, 1 },
1763 { "-cr", "--cursor-color", 10, 1 },
1764 { "-fn", "--font", 10, 1 },
1765 { "-font", 0, 10, 1 },
1766 { "-fs", "--fullscreen", 10, 0 },
1767 { "-fw", "--fullwidth", 10, 0 },
1768 { "-fh", "--fullheight", 10, 0 },
1769 { "-g", "--geometry", 10, 1 },
1770 { "-geometry", 0, 10, 1 },
1771 { "-T", "--title", 10, 1 },
1772 { "-title", 0, 10, 1 },
1773 { "-name", "--name", 10, 1 },
1774 { "-xrm", "--xrm", 10, 1 },
1775 { "-r", "--reverse-video", 5, 0 },
1777 { "-reverse", 0, 5, 0 },
1778 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1779 { "-vb", "--vertical-scroll-bars", 5, 0 },
1780 { "-color", "--color", 5, 0},
1781 /* These have the same priority as ordinary file name args,
1782 so they are not reordered with respect to those. */
1783 { "-L", "--directory", 0, 1 },
1784 { "-directory", 0, 0, 1 },
1785 { "-l", "--load", 0, 1 },
1786 { "-load", 0, 0, 1 },
1787 { "-f", "--funcall", 0, 1 },
1788 { "-funcall", 0, 0, 1 },
1789 { "-eval", "--eval", 0, 1 },
1790 { "-execute", "--execute", 0, 1 },
1791 { "-find-file", "--find-file", 0, 1 },
1792 { "-visit", "--visit", 0, 1 },
1793 { "-file", "--file", 0, 1 },
1794 { "-insert", "--insert", 0, 1 },
1795 /* This should be processed after ordinary file name args and the like. */
1796 { "-kill", "--kill", -10, 0 },
1799 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1800 so that the highest priority ones come first.
1801 Do not change the order of elements of equal priority.
1802 If an option takes an argument, keep it and its argument together.
1804 If an option that takes no argument appears more
1805 than once, eliminate all but one copy of it. */
1808 sort_args (argc
, argv
)
1812 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1813 /* For each element of argv,
1814 the corresponding element of options is:
1815 0 for an option that takes no arguments,
1816 1 for an option that takes one argument, etc.
1817 -1 for an ordinary non-option argument. */
1818 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1819 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1821 int incoming_used
= 1;
1825 /* Categorize all the options,
1826 and figure out which argv elts are option arguments. */
1827 for (from
= 1; from
< argc
; from
++)
1831 if (argv
[from
][0] == '-')
1836 /* If we have found "--", don't consider
1837 any more arguments as options. */
1838 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1840 /* Leave the "--", and everything following it, at the end. */
1841 for (; from
< argc
; from
++)
1843 priority
[from
] = -100;
1849 /* Look for a match with a known old-fashioned option. */
1850 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1851 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1853 options
[from
] = standard_args
[i
].nargs
;
1854 priority
[from
] = standard_args
[i
].priority
;
1855 if (from
+ standard_args
[i
].nargs
>= argc
)
1856 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1857 from
+= standard_args
[i
].nargs
;
1861 /* Look for a match with a known long option.
1862 MATCH is -1 if no match so far, -2 if two or more matches so far,
1863 >= 0 (the table index of the match) if just one match so far. */
1864 if (argv
[from
][1] == '-')
1867 thislen
= strlen (argv
[from
]);
1868 equals
= index (argv
[from
], '=');
1870 thislen
= equals
- argv
[from
];
1873 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1874 if (standard_args
[i
].longname
1875 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1884 /* If we found exactly one match, use that. */
1887 options
[from
] = standard_args
[match
].nargs
;
1888 priority
[from
] = standard_args
[match
].priority
;
1889 /* If --OPTION=VALUE syntax is used,
1890 this option uses just one argv element. */
1893 if (from
+ options
[from
] >= argc
)
1894 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1895 from
+= options
[from
];
1902 /* Copy the arguments, in order of decreasing priority, to NEW. */
1904 while (incoming_used
< argc
)
1907 int best_priority
= -9999;
1909 /* Find the highest priority remaining option.
1910 If several have equal priority, take the first of them. */
1911 for (from
= 1; from
< argc
; from
++)
1913 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1915 best_priority
= priority
[from
];
1918 /* Skip option arguments--they are tied to the options. */
1919 if (options
[from
] > 0)
1920 from
+= options
[from
];
1926 /* Copy the highest priority remaining option, with its args, to NEW.
1927 Unless it is a duplicate of the previous one. */
1928 if (! (options
[best
] == 0
1929 && ! strcmp (new[to
- 1], argv
[best
])))
1931 new[to
++] = argv
[best
];
1932 for (i
= 0; i
< options
[best
]; i
++)
1933 new[to
++] = argv
[best
+ i
+ 1];
1936 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1938 /* Clear out this option in ARGV. */
1940 for (i
= 0; i
< options
[best
]; i
++)
1941 argv
[best
+ i
+ 1] = 0;
1944 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1948 bcopy (new, argv
, sizeof (char *) * argc
);
1955 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1956 doc
: /* Exit the Emacs job and kill it.
1957 If ARG is an integer, return ARG as the exit program code.
1958 If ARG is a string, stuff it as keyboard input.
1960 The value of `kill-emacs-hook', if not void,
1961 is a list of functions (of no args),
1962 all of which are called before Emacs is actually killed. */)
1966 struct gcpro gcpro1
;
1973 if (!NILP (Vrun_hooks
) && !noninteractive
)
1974 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1978 /* Is it really necessary to do this deassign
1979 when we are going to exit anyway? */
1984 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1986 /* If we have an auto-save list file,
1987 kill it because we are exiting Emacs deliberately (not crashing).
1988 Do it after shut_down_emacs, which does an auto-save. */
1989 if (STRINGP (Vauto_save_list_file_name
))
1990 unlink (SDATA (Vauto_save_list_file_name
));
1992 exit (INTEGERP (arg
) ? XINT (arg
)
2003 /* Perform an orderly shutdown of Emacs. Autosave any modified
2004 buffers, kill any child processes, clean up the terminal modes (if
2005 we're in the foreground), and other stuff like that. Don't perform
2006 any redisplay; this may be called when Emacs is shutting down in
2007 the background, or after its X connection has died.
2009 If SIG is a signal number, print a message for it.
2011 This is called by fatal signal handlers, X protocol error handlers,
2015 shut_down_emacs (sig
, no_x
, stuff
)
2019 /* Prevent running of hooks from now on. */
2022 /* Don't update display from now on. */
2023 Vinhibit_redisplay
= Qt
;
2025 /* If we are controlling the terminal, reset terminal modes. */
2026 #ifdef EMACS_HAVE_TTY_PGRP
2028 int pgrp
= EMACS_GETPGRP (0);
2031 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2036 if (sig
&& sig
!= SIGTERM
)
2037 fprintf (stderr
, "Fatal error (%d)", sig
);
2045 stuff_buffered_input (stuff
);
2047 kill_buffer_processes (Qnil
);
2048 Fdo_auto_save (Qt
, Qnil
);
2050 #ifdef CLASH_DETECTION
2051 unlock_all_files ();
2055 kill_vms_processes ();
2058 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2059 #ifdef HAVE_X_WINDOWS
2060 /* It's not safe to call intern here. Maybe we are crashing. */
2061 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2062 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2063 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2065 Fx_close_current_connection ();
2066 #endif /* HAVE_X_WINDOWS */
2070 /* There is a tendency for a SIGIO signal to arrive within exit,
2071 and cause a SIGHUP because the input descriptor is already closed. */
2073 signal (SIGIO
, SIG_IGN
);
2080 /* Do this only if terminating normally, we want glyph matrices
2081 etc. in a core dump. */
2082 if (sig
== 0 || sig
== SIGTERM
)
2084 check_glyph_memory ();
2085 check_message_stack ();
2099 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2100 doc
: /* Dump current state of Emacs into data file FILENAME.
2101 This function exists on systems that use HAVE_SHM. */)
2103 Lisp_Object filename
;
2105 extern char my_edata
[];
2109 CHECK_STRING (filename
);
2110 filename
= Fexpand_file_name (filename
, Qnil
);
2113 Vpurify_flag
= Qnil
;
2116 /* Tell malloc where start of impure now is. */
2117 /* Also arrange for warnings when nearly out of space. */
2118 #ifndef SYSTEM_MALLOC
2119 memory_warnings (my_edata
, malloc_warning
);
2121 map_out_data (SDATA (filename
));
2128 #else /* not HAVE_SHM */
2130 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2131 doc
: /* Dump current state of Emacs into executable file FILENAME.
2132 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2133 This is used in the file `loadup.el' when building Emacs.
2135 You must run Emacs in batch mode in order to dump it. */)
2137 Lisp_Object filename
, symfile
;
2139 extern char my_edata
[];
2142 int count
= SPECPDL_INDEX ();
2146 if (! noninteractive
)
2147 error ("Dumping Emacs works only in batch mode");
2149 /* Bind `command-line-processed' to nil before dumping,
2150 so that the dumped Emacs will process its command line
2151 and set up to work with X windows if appropriate. */
2152 symbol
= intern ("command-line-processed");
2153 specbind (symbol
, Qnil
);
2155 CHECK_STRING (filename
);
2156 filename
= Fexpand_file_name (filename
, Qnil
);
2157 if (!NILP (symfile
))
2159 CHECK_STRING (symfile
);
2160 if (SCHARS (symfile
))
2161 symfile
= Fexpand_file_name (symfile
, Qnil
);
2165 Vpurify_flag
= Qnil
;
2168 set_time_zone_rule (dump_tz
);
2169 #ifndef LOCALTIME_CACHE
2170 /* Force a tz reload, since set_time_zone_rule doesn't. */
2177 mapout_data (SDATA (filename
));
2179 /* Tell malloc where start of impure now is. */
2180 /* Also arrange for warnings when nearly out of space. */
2181 #ifndef SYSTEM_MALLOC
2183 /* On Windows, this was done before dumping, and that once suffices.
2184 Meanwhile, my_edata is not valid on Windows. */
2185 memory_warnings (my_edata
, malloc_warning
);
2186 #endif /* not WINDOWSNT */
2188 #ifdef DOUG_LEA_MALLOC
2189 malloc_state_ptr
= malloc_get_state ();
2192 #ifdef USE_MMAP_FOR_BUFFERS
2195 unexec (SDATA (filename
),
2196 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2197 #ifdef USE_MMAP_FOR_BUFFERS
2200 #ifdef DOUG_LEA_MALLOC
2201 free (malloc_state_ptr
);
2203 #endif /* not VMS */
2207 return unbind_to (count
, Qnil
);
2210 #endif /* not HAVE_SHM */
2212 #endif /* not CANNOT_DUMP */
2215 /* Recover from setlocale (LC_ALL, ""). */
2219 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2220 so that numbers are read and printed properly for Emacs Lisp. */
2221 setlocale (LC_NUMERIC
, "C");
2224 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2227 synchronize_locale (category
, plocale
, desired_locale
)
2229 Lisp_Object
*plocale
;
2230 Lisp_Object desired_locale
;
2232 if (! EQ (*plocale
, desired_locale
))
2234 *plocale
= desired_locale
;
2235 setlocale (category
, (STRINGP (desired_locale
)
2236 ? (char *)(SDATA (desired_locale
))
2241 /* Set system time locale to match Vsystem_time_locale, if possible. */
2243 synchronize_system_time_locale ()
2245 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2246 Vsystem_time_locale
);
2249 /* Set system messages locale to match Vsystem_messages_locale, if
2252 synchronize_system_messages_locale ()
2255 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2256 Vsystem_messages_locale
);
2259 #endif /* HAVE_SETLOCALE */
2266 decode_env_path (evarname
, defalt
)
2267 char *evarname
, *defalt
;
2269 register char *path
, *p
;
2270 Lisp_Object lpath
, element
, tem
;
2272 /* It's okay to use getenv here, because this function is only used
2273 to initialize variables when Emacs starts up, and isn't called
2276 path
= (char *) getenv (evarname
);
2282 /* Ensure values from the environment use the proper directory separator. */
2285 p
= alloca (strlen (path
) + 1);
2289 if ('/' == DIRECTORY_SEP
)
2290 dostounix_filename (path
);
2292 unixtodos_filename (path
);
2298 p
= index (path
, SEPCHAR
);
2299 if (!p
) p
= path
+ strlen (path
);
2300 element
= (p
- path
? make_string (path
, p
- path
)
2301 : build_string ("."));
2303 /* Add /: to the front of the name
2304 if it would otherwise be treated as magic. */
2305 tem
= Ffind_file_name_handler (element
, Qt
);
2307 /* However, if the handler says "I'm safe",
2308 don't bother adding /:. */
2312 prop
= Fget (tem
, intern ("safe-magic"));
2318 element
= concat2 (build_string ("/:"), element
);
2320 lpath
= Fcons (element
, lpath
);
2326 return Fnreverse (lpath
);
2332 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2333 staticpro (&Qfile_name_handler_alist
);
2337 defsubr (&Sdump_emacs_data
);
2339 defsubr (&Sdump_emacs
);
2343 defsubr (&Skill_emacs
);
2345 defsubr (&Sinvocation_name
);
2346 defsubr (&Sinvocation_directory
);
2348 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2349 doc
: /* Args passed by shell to Emacs, as a list of strings.
2350 Many arguments are deleted from the list as they are processed. */);
2352 DEFVAR_LISP ("system-type", &Vsystem_type
,
2353 doc
: /* Value is symbol indicating type of operating system you are using. */);
2354 Vsystem_type
= intern (SYSTEM_TYPE
);
2356 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2357 doc
: /* Value is string indicating configuration Emacs was built for.
2358 On MS-Windows, the value reflects the OS flavor and version on which
2359 Emacs is running. */);
2360 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2362 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2363 doc
: /* String containing the configuration options Emacs was built with. */);
2364 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2366 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2367 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2369 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2370 doc
: /* Hook to be run when kill-emacs is called.
2371 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2372 in other similar situations), functions placed on this hook should not
2373 expect to be able to interact with the user. To ask for confirmation,
2374 see `kill-emacs-query-functions' instead.
2376 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2377 Vkill_emacs_hook
= Qnil
;
2379 empty_string
= build_string ("");
2380 staticpro (&empty_string
);
2383 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2384 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2385 Vsignal_USR1_hook
= Qnil
;
2387 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2388 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2389 Vsignal_USR2_hook
= Qnil
;
2394 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2395 doc
: /* Priority for Emacs to run at.
2396 This value is effective only if set before Emacs is dumped,
2397 and only if the Emacs executable is installed with setuid to permit
2398 it to change priority. (Emacs sets its uid back to the real uid.)
2399 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2400 before you compile Emacs, to enable the code for this feature. */);
2403 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2404 doc
: /* The directory separator in search paths, as a string. */);
2407 Vpath_separator
= make_string (&c
, 1);
2410 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2411 doc
: /* The program name that was used to run Emacs.
2412 Any directory names are omitted. */);
2414 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2415 doc
: /* The directory in which the Emacs executable was found, to run it.
2416 The value is nil if that directory's name is not known. */);
2418 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2419 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2420 This is non-nil when we can't find those directories in their standard
2421 installed locations, but we can find them
2422 near where the Emacs executable was found. */);
2423 Vinstallation_directory
= Qnil
;
2425 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2426 doc
: /* System locale for messages. */);
2427 Vsystem_messages_locale
= Qnil
;
2429 DEFVAR_LISP ("previous-system-messages-locale",
2430 &Vprevious_system_messages_locale
,
2431 doc
: /* Most recently used system locale for messages. */);
2432 Vprevious_system_messages_locale
= Qnil
;
2434 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2435 doc
: /* System locale for time. */);
2436 Vsystem_time_locale
= Qnil
;
2438 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2439 doc
: /* Most recently used system locale for time. */);
2440 Vprevious_system_time_locale
= Qnil
;
2443 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2444 (do not change this comment) */