1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001
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>
45 #include "intervals.h"
49 #include "blockinput.h"
50 #include "syssignal.h"
52 #include "termhooks.h"
62 #include <sys/resource.h>
70 #if !defined (USG) || defined (BSD_PGRPS)
72 #define setpgrp setpgid
76 extern void malloc_warning
P_ ((char *));
77 extern void set_time_zone_rule
P_ ((char *));
79 extern char *index
P_ ((const char *, int));
82 /* Make these values available in GDB, which doesn't see macros. */
84 EMACS_INT gdb_valbits
= VALBITS
;
85 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
86 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
88 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
90 EMACS_INT gdb_data_seg_bits
= 0;
92 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
94 /* Command line args from shell, as list of strings */
95 Lisp_Object Vcommand_line_args
;
97 /* The name under which Emacs was invoked, with any leading directory
99 Lisp_Object Vinvocation_name
;
101 /* The directory name from which Emacs was invoked. */
102 Lisp_Object Vinvocation_directory
;
104 /* The directory name in which to find subdirs such as lisp and etc.
105 nil means get them only from PATH_LOADSEARCH. */
106 Lisp_Object Vinstallation_directory
;
108 /* Hook run by `kill-emacs' before it does really anything. */
109 Lisp_Object Vkill_emacs_hook
;
111 /* An empty lisp string. To avoid having to build any other. */
112 Lisp_Object empty_string
;
115 /* Hooks for signal USR1 and USR2 handing */
116 Lisp_Object Vsignal_USR1_hook
;
118 Lisp_Object Vsignal_USR2_hook
;
122 /* Search path separator. */
123 Lisp_Object Vpath_separator
;
125 /* Set nonzero after Emacs has started up the first time.
126 Prevents reinitialization of the Lisp world and keymaps
127 on subsequent starts. */
130 #ifdef DOUG_LEA_MALLOC
131 /* Preserves a pointer to the memory allocated that copies that
132 static data inside glibc's malloc. */
133 void *malloc_state_ptr
;
134 /* From glibc, a routine that returns a copy of the malloc internal state. */
135 extern void *malloc_get_state ();
136 /* From glibc, a routine that overwrites the malloc internal state. */
137 extern void malloc_set_state ();
138 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
139 dumping. Used to work around a bug in glibc's malloc. */
140 int malloc_using_checking
;
143 /* Variable whose value is symbol giving operating system type. */
144 Lisp_Object Vsystem_type
;
146 /* Variable whose value is string giving configuration built for. */
147 Lisp_Object Vsystem_configuration
;
149 /* Variable whose value is string giving configuration options,
150 for use when reporting bugs. */
151 Lisp_Object Vsystem_configuration_options
;
153 Lisp_Object Qfile_name_handler_alist
;
155 /* Current and previous system locales for messages and time. */
156 Lisp_Object Vsystem_messages_locale
;
157 Lisp_Object Vprevious_system_messages_locale
;
158 Lisp_Object Vsystem_time_locale
;
159 Lisp_Object Vprevious_system_time_locale
;
161 /* If non-zero, emacs should not attempt to use an window-specific code,
162 but instead should use the virtual terminal under which it was started */
163 int inhibit_window_system
;
165 /* If nonzero, set Emacs to run at this priority. This is also used
166 in child_setup and sys_suspend to make sure subshells run at normal
167 priority; Those functions have their own extern declaration. */
170 /* If non-zero a filter or a sentinel is running. Tested to save the match
171 data on the first attempt to change it inside asynchronous code. */
172 int running_asynch_code
;
176 extern int inherited_pgroup
;
179 #ifdef HAVE_X_WINDOWS
180 /* If non-zero, -d was specified, meaning we're using some window system. */
184 /* An address near the bottom of the stack.
185 Tells GC how to save a copy of the stack. */
188 #ifdef HAVE_WINDOW_SYSTEM
189 extern Lisp_Object Vwindow_system
;
190 #endif /* HAVE_WINDOW_SYSTEM */
192 extern Lisp_Object Vauto_save_list_file_name
;
194 #ifdef USG_SHARED_LIBRARIES
195 /* If nonzero, this is the place to put the end of the writable segment
198 unsigned int bss_end
= 0;
201 /* Nonzero means running Emacs without interactive terminal. */
205 /* Value of Lisp variable `noninteractive'.
206 Normally same as C variable `noninteractive'
207 but nothing terrible happens if user sets this one. */
211 /* Save argv and argc. */
215 static void sort_args ();
216 void syms_of_emacs ();
219 Usage: %s [OPTION-OR-FILENAME]...\n\
221 Run Emacs, the extensible, customizable, self-documenting real-time\n\
222 display editor. The recommended way to start Emacs for normal editing\n\
223 is with no options at all.\n\
225 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
226 read the main documentation for these command-line arguments.\n\
228 Initialization options:\n\
230 --batch do not do interactive display; implies -q\n\
231 --debug-init enable Emacs Lisp debugger during init file\n\
232 --help display this help message and exit\n\
233 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
234 --no-init-file, -q load neither ~/.emacs nor default.el\n\
235 --no-shared-memory, -nl do not use shared memory\n\
236 --no-site-file do not load site-start.el\n\
237 --no-windows, -nw don't communicate with X, ignoring $DISPLAY\n\
238 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
239 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
240 --user, -u USER load ~USER/.emacs instead of your own\n\
241 --version display version information and exit\n\
245 FILE visit FILE using find-file\n\
246 +LINE FILE visit FILE using find-file, then go to line LINE\n\
247 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
249 --directory, -L DIR add DIR to variable load-path\n\
250 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
251 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
252 --find-file FILE visit FILE\n\
253 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
254 --insert FILE insert contents of FILE into current buffer\n\
255 --kill exit without asking for confirmation\n\
256 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
257 --visit FILE visit FILE\n\
263 --background-color, -bg COLOR window background color\n\
264 --border-color, -bd COLOR main border color\n\
265 --border-width, -bw WIDTH width of main border\n\
266 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
267 --display, -d DISPLAY use X server DISPLAY\n\
268 --font, -fn FONT default font; must be fixed-widthp\n\
269 --foreground-color, -fg COLOR window foreground color\n\
270 --geometry, -g GEOMETRY window geometry\n\
271 --iconic start Emacs in iconified state\n\
272 --icon-type, -i use picture of gnu for Emacs icon\n\
273 --internal-border, -ib WIDTH width between text and main border\n\
274 --line-spacing, -lsp PIXELS additional space to put between lines\n\
275 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
276 --name NAME title of main Emacs window\n\
277 --reverse-video, -r, -rv switch foreground and background\n\
278 --title, -T, -wn, TITLE title for Emacs windows\n\
279 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
280 --xrm XRESOURCES set additional X resources\n\
282 You can generally also specify long option names with a single -; for\n\
283 example, -batch as well as --batch. You can use any unambiguous\n\
284 abbreviation for a --option.\n\
286 Various environment variables and window system resources also affect\n\
287 Emacs' operation. See the main documentation.\n\
289 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
290 section of the Emacs manual or the file BUGS.\n"
293 /* Signal code for the fatal signal that was received */
294 int fatal_error_code
;
296 /* Nonzero if handling a fatal error already */
297 int fatal_error_in_progress
;
299 /* If non-null, call this function from fata_error_signal before
300 committing suicide. */
302 void (*fatal_error_signal_hook
) P_ ((void));
307 handle_USR1_signal (sig
)
310 struct input_event buf
;
312 bzero (&buf
, sizeof buf
);
313 buf
.kind
= USER_SIGNAL_EVENT
;
314 buf
.frame_or_window
= selected_frame
;
316 kbd_buffer_store_event (&buf
);
322 handle_USR2_signal (sig
)
325 struct input_event buf
;
327 bzero (&buf
, sizeof buf
);
328 buf
.kind
= USER_SIGNAL_EVENT
;
330 buf
.frame_or_window
= selected_frame
;
332 kbd_buffer_store_event (&buf
);
336 /* Handle bus errors, invalid instruction, etc. */
338 fatal_error_signal (sig
)
341 fatal_error_code
= sig
;
342 signal (sig
, SIG_DFL
);
344 TOTALLY_UNBLOCK_INPUT
;
346 /* If fatal error occurs in code below, avoid infinite recursion. */
347 if (! fatal_error_in_progress
)
349 fatal_error_in_progress
= 1;
351 shut_down_emacs (sig
, 0, Qnil
);
355 LIB$
STOP (SS$_ABORT
);
357 /* Signal the same code; this time it will really be fatal.
358 Remember that since we're in a signal handler, the signal we're
359 going to send is probably blocked, so we have to unblock it if we
360 want to really receive it. */
362 sigunblock (sigmask (fatal_error_code
));
365 if (fatal_error_signal_hook
)
366 fatal_error_signal_hook ();
368 kill (getpid (), fatal_error_code
);
374 /* Handler for SIGDANGER. */
376 memory_warning_signal (sig
)
379 signal (sig
, memory_warning_signal
);
381 malloc_warning ("Operating system warns that virtual memory is running low.\n");
383 /* It might be unsafe to call do_auto_save now. */
384 force_auto_save_soon ();
388 /* We define abort, rather than using it from the library,
389 so that GDB can return from a breakpoint here.
390 MSDOS has its own definition on msdos.c */
392 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
394 #ifndef ABORT_RETURN_TYPE
395 #define ABORT_RETURN_TYPE void
401 kill (getpid (), SIGABRT
);
402 /* This shouldn't be executed, but it prevents a warning. */
408 /* Code for dealing with Lisp access to the Unix command line */
411 init_cmdargs (argc
, argv
, skip_args
)
417 Lisp_Object name
, dir
, tem
;
418 int count
= specpdl_ptr
- specpdl
;
419 Lisp_Object raw_name
;
424 raw_name
= build_string (argv
[0]);
426 /* Add /: to the front of the name
427 if it would otherwise be treated as magic. */
428 tem
= Ffind_file_name_handler (raw_name
, Qt
);
430 raw_name
= concat2 (build_string ("/:"), raw_name
);
432 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
433 Vinvocation_directory
= Ffile_name_directory (raw_name
);
435 /* If we got no directory in argv[0], search PATH to find where
436 Emacs actually came from. */
437 if (NILP (Vinvocation_directory
))
440 int yes
= openp (Vexec_path
, Vinvocation_name
,
441 Vexec_suffixes
, &found
, 1);
444 /* Add /: to the front of the name
445 if it would otherwise be treated as magic. */
446 tem
= Ffind_file_name_handler (found
, Qt
);
448 found
= concat2 (build_string ("/:"), found
);
449 Vinvocation_directory
= Ffile_name_directory (found
);
453 if (!NILP (Vinvocation_directory
)
454 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
455 /* Emacs was started with relative path, like ./emacs.
457 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
459 Vinstallation_directory
= Qnil
;
461 if (!NILP (Vinvocation_directory
))
463 dir
= Vinvocation_directory
;
464 name
= Fexpand_file_name (Vinvocation_name
, dir
);
467 Lisp_Object tem
, lib_src_exists
;
468 Lisp_Object etc_exists
, info_exists
;
470 /* See if dir contains subdirs for use by Emacs.
471 Check for the ones that would exist in a build directory,
472 not including lisp and info. */
473 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
474 lib_src_exists
= Ffile_exists_p (tem
);
477 /* MSDOS installations frequently remove lib-src, but we still
478 must set installation-directory, or else info won't find
479 its files (it uses the value of installation-directory). */
480 tem
= Fexpand_file_name (build_string ("info"), dir
);
481 info_exists
= Ffile_exists_p (tem
);
486 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
488 tem
= Fexpand_file_name (build_string ("etc"), dir
);
489 etc_exists
= Ffile_exists_p (tem
);
490 if (!NILP (etc_exists
))
492 Vinstallation_directory
493 = Ffile_name_as_directory (dir
);
498 /* See if dir's parent contains those subdirs. */
499 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
500 lib_src_exists
= Ffile_exists_p (tem
);
504 /* See the MSDOS commentary above. */
505 tem
= Fexpand_file_name (build_string ("../info"), dir
);
506 info_exists
= Ffile_exists_p (tem
);
511 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
513 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
514 etc_exists
= Ffile_exists_p (tem
);
515 if (!NILP (etc_exists
))
517 tem
= Fexpand_file_name (build_string (".."), dir
);
518 Vinstallation_directory
519 = Ffile_name_as_directory (tem
);
524 /* If the Emacs executable is actually a link,
525 next try the dir that the link points into. */
526 tem
= Ffile_symlink_p (name
);
529 name
= Fexpand_file_name (tem
, dir
);
530 dir
= Ffile_name_directory (name
);
537 Vcommand_line_args
= Qnil
;
539 for (i
= argc
- 1; i
>= 0; i
--)
541 if (i
== 0 || i
> skip_args
)
543 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
546 unbind_to (count
, Qnil
);
549 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
550 "Return the program name that was used to run Emacs.\n\
551 Any directory names are omitted.")
554 return Fcopy_sequence (Vinvocation_name
);
557 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
559 "Return the directory name in which the Emacs executable was located")
562 return Fcopy_sequence (Vinvocation_directory
);
567 #ifdef LINK_CRTL_SHARE
568 #ifdef SHARABLE_LIB_BUG
569 extern noshare
char **environ
;
570 #endif /* SHARABLE_LIB_BUG */
571 #endif /* LINK_CRTL_SHARE */
575 /* A valid but unlikely value for the TZ environment value.
576 It is OK (though a bit slower) if the user actually chooses this value. */
577 static char dump_tz
[] = "UtC0";
580 #ifndef ORDINARY_LINK
581 /* We don't include crtbegin.o and crtend.o in the link,
582 so these functions and variables might be missed.
583 Provide dummy definitions to avoid error.
584 (We don't have any real constructors or destructors.) */
586 #ifndef GCC_CTORS_IN_LIBC
587 void __do_global_ctors ()
589 void __do_global_ctors_aux ()
591 void __do_global_dtors ()
593 /* Linux has a bug in its library; avoid an error. */
595 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
597 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
598 #endif /* GCC_CTORS_IN_LIBC */
601 #endif /* __GNUC__ */
602 #endif /* ORDINARY_LINK */
604 /* Test whether the next argument in ARGV matches SSTR or a prefix of
605 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
606 (the argument is supposed to have a value) store in *VALPTR either
607 the next argument or the portion of this one after the equal sign.
608 ARGV is read starting at position *SKIPPTR; this index is advanced
609 by the number of arguments used.
611 Too bad we can't just use getopt for all of this, but we don't have
612 enough information to do it right. */
615 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
628 /* Don't access argv[argc]; give up in advance. */
629 if (argc
<= *skipptr
+ 1)
632 arg
= argv
[*skipptr
+1];
635 if (strcmp (arg
, sstr
) == 0)
639 *valptr
= argv
[*skipptr
+2];
646 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
647 ? p
- arg
: strlen (arg
));
648 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
650 else if (valptr
== NULL
)
661 else if (argv
[*skipptr
+2] != NULL
)
663 *valptr
= argv
[*skipptr
+2];
673 #ifdef DOUG_LEA_MALLOC
675 /* malloc can be invoked even before main (e.g. by the dynamic
676 linker), so the dumped malloc state must be restored as early as
677 possible using this special hook. */
680 malloc_initialize_hook ()
683 extern char **environ
;
688 if (!malloc_using_checking
)
689 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
690 ignored if the heap to be restored was constructed without
691 malloc checking. Can't use unsetenv, since that calls malloc. */
695 for (p
= environ
; p
&& *p
; p
++)
696 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
705 malloc_set_state (malloc_state_ptr
);
706 free (malloc_state_ptr
);
709 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
712 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
714 #endif /* DOUG_LEA_MALLOC */
718 main (argc
, argv
, envp
)
726 char stack_bottom_variable
;
727 int do_initial_setlocale
;
732 #ifdef HAVE_SETRLIMIT
738 extern Lisp_Object
*stack_base
;
742 #ifdef LINUX_SBRK_BUG
746 #ifdef RUN_TIME_REMAP
748 run_time_remap (argv
[0]);
751 sort_args (argc
, argv
);
753 while (argv
[argc
]) argc
++;
755 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
756 /* We don't know the version number unless this is a dumped Emacs.
757 So ignore --version otherwise. */
761 tem
= Fsymbol_value (intern ("emacs-version"));
764 fprintf (stderr
, "Invalid value of `emacs-version'\n");
769 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
770 printf ("Copyright (C) 2001 Free Software Foundation, Inc.\n");
771 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
772 printf ("You may redistribute copies of Emacs\n");
773 printf ("under the terms of the GNU General Public License.\n");
774 printf ("For more information about these matters, ");
775 printf ("see the file named COPYING.\n");
780 /* Map in shared memory, if we are using that. */
782 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
785 /* The shared memory was just restored, which clobbered this. */
791 /* The shared memory was just restored, which clobbered this. */
798 extern int malloc_cookie
;
799 /* This helps out unexnext.c. */
801 if (malloc_jumpstart (malloc_cookie
) != 0)
802 printf ("malloc jumpstart failed!\n");
807 /* If -map specified, map the data file in */
810 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
814 #ifdef LINK_CRTL_SHARE
815 #ifdef SHARABLE_LIB_BUG
816 /* Bletcherous shared libraries! */
818 stdin
= fdopen (0, "r");
820 stdout
= fdopen (1, "w");
822 stderr
= fdopen (2, "w");
825 #endif /* SHARABLE_LIB_BUG */
826 #endif /* LINK_CRTL_SHARE */
829 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
830 /* Extend the stack space available.
831 Don't do that if dumping, since some systems (e.g. DJGPP)
832 might define a smaller stack limit at that time. */
835 && (!noninteractive
|| initialized
)
837 && !getrlimit (RLIMIT_STACK
, &rlim
))
840 extern int re_max_failures
;
841 /* Approximate the amount regex.c needs per unit of re_max_failures. */
842 int ratio
= 20 * sizeof (char *);
843 /* Then add 33% to cover the size of the smaller stacks that regex.c
844 successively allocates and discards, on its way to the maximum. */
846 /* Add in some extra to cover
847 what we're likely to use for other reasons. */
848 newlim
= re_max_failures
* ratio
+ 200000;
850 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
851 stack allocation routine for new process that the allocation
852 fails if stack limit is not on page boundary. So, round up the
853 new limit to page boundary. */
854 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
856 if (newlim
> rlim
.rlim_max
)
858 newlim
= rlim
.rlim_max
;
859 /* Don't let regex.c overflow the stack we have. */
860 re_max_failures
= (newlim
- 200000) / ratio
;
862 if (rlim
.rlim_cur
< newlim
)
863 rlim
.rlim_cur
= newlim
;
865 setrlimit (RLIMIT_STACK
, &rlim
);
867 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
869 /* Record (approximately) where the stack begins. */
870 stack_bottom
= &stack_bottom_variable
;
872 #ifdef USG_SHARED_LIBRARIES
874 brk ((void *)bss_end
);
879 #ifndef SYSTEM_MALLOC
880 /* Arrange to get warning messages as memory fills up. */
881 memory_warnings (0, malloc_warning
);
883 /* Call malloc at least once, to run the initial __malloc_hook.
884 Also call realloc and free for consistency. */
885 free (realloc (malloc (4), 4));
887 /* Arrange to disable interrupt input inside malloc etc. */
888 uninterrupt_malloc ();
889 #endif /* not SYSTEM_MALLOC */
892 /* We do all file input/output as binary files. When we need to translate
893 newlines, we do that manually. */
897 if (!isatty (fileno (stdin
)))
898 setmode (fileno (stdin
), O_BINARY
);
899 if (!isatty (fileno (stdout
)))
902 setmode (fileno (stdout
), O_BINARY
);
904 #else /* not __DJGPP__ >= 2 */
905 (stdin
)->_flag
&= ~_IOTEXT
;
906 (stdout
)->_flag
&= ~_IOTEXT
;
907 (stderr
)->_flag
&= ~_IOTEXT
;
908 #endif /* not __DJGPP__ >= 2 */
911 #ifdef SET_EMACS_PRIORITY
913 nice (emacs_priority
);
915 #endif /* SET_EMACS_PRIORITY */
917 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
918 The build procedure uses this while dumping, to ensure that the
919 dumped Emacs does not have its system locale tables initialized,
920 as that might cause screwups when the dumped Emacs starts up. */
922 char *lc_all
= getenv ("LC_ALL");
923 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
926 /* Set locale now, so that initial error messages are localized properly.
927 fixup_locale must wait until later, since it builds strings. */
928 if (do_initial_setlocale
)
929 setlocale (LC_ALL
, "");
931 #ifdef EXTRA_INITIALIZE
935 inhibit_window_system
= 0;
937 /* Handle the -t switch, which specifies filename to use as terminal */
941 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
946 result
= emacs_open (term
, O_RDWR
, 0);
949 char *errstring
= strerror (errno
);
950 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
956 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
959 fprintf (stderr
, "Using %s\n", term
);
960 #ifdef HAVE_WINDOW_SYSTEM
961 inhibit_window_system
= 1; /* -t => -nw */
968 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
969 inhibit_window_system
= 1;
971 /* Handle the -batch switch, which means don't do interactive display. */
973 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
976 /* Handle the --help option, which gives a usage message.. */
977 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
979 printf (USAGE1
, argv
[0]);
984 if (! noninteractive
)
989 inherited_pgroup
= EMACS_GETPGRP (0);
990 setpgrp (0, getpid ());
993 #if defined (USG5) && defined (INTERRUPT_INPUT)
1001 /* Don't catch SIGHUP if dumping. */
1008 sigblock (sigmask (SIGHUP
));
1009 /* In --batch mode, don't catch SIGHUP if already ignored.
1010 That makes nohup work. */
1011 if (! noninteractive
1012 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1013 signal (SIGHUP
, fatal_error_signal
);
1014 sigunblock (sigmask (SIGHUP
));
1019 ! noninteractive
|| initialized
1025 /* Don't catch these signals in batch mode if dumping.
1026 On some machines, this sets static data that would make
1027 signal fail to work right when the dumped Emacs is run. */
1028 signal (SIGQUIT
, fatal_error_signal
);
1029 signal (SIGILL
, fatal_error_signal
);
1030 signal (SIGTRAP
, fatal_error_signal
);
1032 signal (SIGUSR1
, handle_USR1_signal
);
1034 signal (SIGUSR2
, handle_USR2_signal
);
1038 signal (SIGABRT
, fatal_error_signal
);
1041 signal (SIGHWE
, fatal_error_signal
);
1044 signal (SIGPRE
, fatal_error_signal
);
1047 signal (SIGORE
, fatal_error_signal
);
1050 signal (SIGUME
, fatal_error_signal
);
1053 signal (SIGDLK
, fatal_error_signal
);
1056 signal (SIGCPULIM
, fatal_error_signal
);
1059 /* This is missing on some systems - OS/2, for example. */
1060 signal (SIGIOT
, fatal_error_signal
);
1063 signal (SIGEMT
, fatal_error_signal
);
1065 signal (SIGFPE
, fatal_error_signal
);
1067 signal (SIGBUS
, fatal_error_signal
);
1069 signal (SIGSEGV
, fatal_error_signal
);
1071 signal (SIGSYS
, fatal_error_signal
);
1073 signal (SIGTERM
, fatal_error_signal
);
1075 signal (SIGXCPU
, fatal_error_signal
);
1078 signal (SIGXFSZ
, fatal_error_signal
);
1079 #endif /* SIGXFSZ */
1082 /* This just means available memory is getting low. */
1083 signal (SIGDANGER
, memory_warning_signal
);
1087 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1088 signal (SIGXCPU
, fatal_error_signal
);
1090 signal (SIGIOINT
, fatal_error_signal
);
1092 signal (SIGGRANT
, fatal_error_signal
);
1093 signal (SIGRETRACT
, fatal_error_signal
);
1094 signal (SIGSOUND
, fatal_error_signal
);
1095 signal (SIGMSG
, fatal_error_signal
);
1099 noninteractive1
= noninteractive
;
1101 /* Perform basic initializations (not merely interning symbols) */
1108 init_charset_once ();
1109 init_coding_once ();
1110 init_syntax_once (); /* Create standard syntax table. */
1111 init_category_once (); /* Create standard category table. */
1112 /* Must be done before init_buffer */
1113 init_casetab_once ();
1114 init_buffer_once (); /* Create buffer table and some buffers */
1115 init_minibuf_once (); /* Create list of minibuffers */
1116 /* Must precede init_window_once */
1118 /* Call syms_of_xfaces before init_window_once because that
1119 function creates Vterminal_frame. Termcap frames now use
1120 faces, and the face implementation uses some symbols as
1123 /* Call syms_of_keyboard before init_window_once because
1124 keyboard sets up symbols that include some face names that
1125 the X support will want to use. This can happen when
1126 CANNOT_DUMP is defined. */
1127 syms_of_keyboard ();
1130 /* init_window_once calls make_terminal_frame which on Mac OS
1131 creates a full-fledge output_mac type frame. This does not
1132 work correctly before syms_of_textprop, syms_of_macfns,
1133 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1134 syms_of_frame, x_term_init, and init_keyboard have already
1136 syms_of_textprop ();
1150 init_window_once (); /* Init the window system */
1151 init_fileio_once (); /* Must precede any path manipulation. */
1156 if (do_initial_setlocale
)
1159 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1160 Vsystem_time_locale
= Vprevious_system_time_locale
;
1165 #ifdef CLASH_DETECTION
1169 running_asynch_code
= 0;
1171 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1172 but not while dumping. */
1175 ! noninteractive
|| initialized
1181 int inhibit_unibyte
= 0;
1183 /* --multibyte overrides EMACS_UNIBYTE. */
1184 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1185 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1186 inhibit_unibyte
= 1;
1188 /* --unibyte requests that we set up to do everything with single-byte
1189 buffers and strings. We need to handle this before calling
1190 init_lread, init_editfns and other places that generate Lisp strings
1191 from text in the environment. */
1192 /* Actually this shouldn't be needed as of 20.4 in a generally
1193 unibyte environment. As handa says, environment values
1194 aren't now decoded; also existing buffers are now made
1195 unibyte during startup if .emacs sets unibyte. Tested with
1196 8-bit data in environment variables and /etc/passwd, setting
1197 unibyte and Latin-1 in .emacs. -- Dave Love */
1198 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1199 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1200 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1202 Lisp_Object old_log_max
;
1203 Lisp_Object symbol
, tail
;
1205 symbol
= intern ("default-enable-multibyte-characters");
1206 Fset (symbol
, Qnil
);
1210 /* Erase pre-dump messages in *Messages* now so no abort. */
1211 old_log_max
= Vmessage_log_max
;
1212 XSETFASTINT (Vmessage_log_max
, 0);
1213 message_dolog ("", 0, 1, 0);
1214 Vmessage_log_max
= old_log_max
;
1217 for (tail
= Vbuffer_alist
; CONSP (tail
);
1222 buffer
= Fcdr (XCAR (tail
));
1223 /* Verify that all buffers are empty now, as they
1225 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1227 /* It is safe to do this crudely in an empty buffer. */
1228 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1234 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1237 #ifdef HAVE_X_WINDOWS
1238 /* Stupid kludge to catch command-line display spec. We can't
1239 handle this argument entirely in window system dependent code
1240 because we don't even know which window system dependent code
1241 to run until we've recognized this argument. */
1243 char *displayname
= 0;
1244 int count_before
= skip_args
;
1246 /* Skip any number of -d options, but only use the last one. */
1249 int count_before_this
= skip_args
;
1251 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1253 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1258 count_before
= count_before_this
;
1261 /* If we have the form --display=NAME,
1262 convert it into -d name.
1263 This requires inserting a new element into argv. */
1264 if (displayname
!= 0 && skip_args
- count_before
== 1)
1266 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1269 for (j
= 0; j
< count_before
+ 1; j
++)
1271 new[count_before
+ 1] = "-d";
1272 new[count_before
+ 2] = displayname
;
1273 for (j
= count_before
+ 2; j
<argc
; j
++)
1274 new[j
+ 1] = argv
[j
];
1278 /* Change --display to -d, when its arg is separate. */
1279 else if (displayname
!= 0 && skip_args
> count_before
1280 && argv
[count_before
+ 1][1] == '-')
1281 argv
[count_before
+ 1] = "-d";
1283 /* Don't actually discard this arg. */
1284 skip_args
= count_before
;
1288 /* argmatch must not be used after here,
1289 except when bulding temacs
1290 because the -d argument has not been skipped in skip_args. */
1293 /* Call early 'cause init_environment needs it. */
1295 /* Set defaults for several environment variables. */
1297 init_environment (argc
, argv
, skip_args
);
1303 /* Initialize environment from registry settings. */
1304 init_environment (argv
);
1305 init_ntproc (); /* must precede init_editfns */
1308 /* egetenv is a pretty low-level facility, which may get called in
1309 many circumstances; it seems flimsy to put off initializing it
1310 until calling init_callproc. */
1311 set_process_environment ();
1312 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1313 if this is not done. Do it after set_process_environment so that we
1314 don't pollute Vprocess_environment. */
1315 /* Setting LANG here will defeat the startup locale processing... */
1320 init_buffer (); /* Init default directory of main buffer */
1322 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1323 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1327 /* Erase any pre-dump messages in the message log, to avoid confusion */
1328 Lisp_Object old_log_max
;
1329 old_log_max
= Vmessage_log_max
;
1330 XSETFASTINT (Vmessage_log_max
, 0);
1331 message_dolog ("", 0, 1, 0);
1332 Vmessage_log_max
= old_log_max
;
1335 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1338 /* Intern the names of all standard functions and variables;
1339 define standard keys. */
1343 /* The basic levels of Lisp must come first */
1344 /* And data must come first of all
1345 for the sake of symbols like error-message */
1347 /* Called before init_window_once for Mac OS. */
1355 syms_of_floatfns ();
1359 syms_of_bytecode ();
1361 syms_of_casefiddle ();
1363 syms_of_callproc ();
1364 syms_of_category ();
1366 /* Called before init_window_once for Mac OS. */
1371 #ifndef NO_DIR_LIBRARY
1373 #endif /* not NO_DIR_LIBRARY */
1379 syms_of_coding (); /* This should be after syms_of_fileio. */
1380 #ifdef CLASH_DETECTION
1381 syms_of_filelock ();
1382 #endif /* CLASH_DETECTION */
1389 syms_of_mocklisp ();
1392 /* Called before init_window_once for Mac OS. */
1403 /* Called before init_window_once for Mac OS. */
1404 syms_of_textprop ();
1406 syms_of_composite ();
1412 #endif /* WINDOWSNT */
1415 #ifdef HAVE_X_WINDOWS
1422 #endif /* HAVE_X_WINDOWS */
1433 syms_of_w32select ();
1436 #endif /* HAVE_NTGUI */
1446 keys_of_casefiddle ();
1449 keys_of_keyboard ();
1457 if (!noninteractive
)
1460 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1462 init_display (); /* Determine terminal type. init_sys_modes uses results */
1465 /* Called before init_window_once for Mac OS. */
1466 init_keyboard (); /* This too must precede init_sys_modes */
1469 init_vmsproc (); /* And this too. */
1471 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1472 #ifdef HAVE_X_WINDOWS
1474 #endif /* HAVE_X_WINDOWS */
1492 /* Handle -l loadup, args passed by Makefile. */
1493 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1494 Vtop_level
= Fcons (intern ("load"),
1495 Fcons (build_string (file
), Qnil
));
1497 /* Unless next switch is -nl, load "loadup.el" first thing. */
1499 Vtop_level
= Fcons (intern ("load"),
1500 Fcons (build_string ("loadup.el"), Qnil
));
1501 #endif /* CANNOT_DUMP */
1508 /* If the execution TZ happens to be the same as the dump TZ,
1509 change it to some other value and then change it back,
1510 to force the underlying implementation to reload the TZ info.
1511 This is needed on implementations that load TZ info from files,
1512 since the TZ file contents may differ between dump and execution. */
1513 char *tz
= getenv ("TZ");
1514 if (tz
&& !strcmp (tz
, dump_tz
))
1524 /* Set up for profiling. This is known to work on FreeBSD and
1525 GNU/Linux. It might work on some other systems too. Give it a
1526 try and tell us if it works on your system. To compile for
1527 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1528 #if defined (__FreeBSD__) || defined (__linux)
1532 extern void _mcleanup ();
1534 extern void safe_bcopy ();
1535 extern void dump_opcode_frequencies ();
1538 /* This uses safe_bcopy because that function comes first in the
1539 Emacs executable. It might be better to use something that
1540 gives the start of the text segment, but start_of_text is not
1541 defined on all systems now. */
1542 monstartup (safe_bcopy
, &etext
);
1551 #ifdef LOCALTIME_CACHE
1552 /* Some versions of localtime have a bug. They cache the value of the time
1553 zone rather than looking it up every time. Since localtime() is
1554 called to bolt the undumping time into the undumped emacs, this
1555 results in localtime ignoring the TZ environment variable.
1556 This flushes the new TZ value into localtime. */
1558 #endif /* defined (LOCALTIME_CACHE) */
1560 /* Enter editor command loop. This never returns. */
1566 /* Sort the args so we can find the most important ones
1567 at the beginning of argv. */
1569 /* First, here's a table of all the standard options. */
1571 struct standard_args
1579 struct standard_args standard_args
[] =
1581 { "-version", "--version", 150, 0 },
1583 { "-nl", "--no-shared-memory", 140, 0 },
1586 { "-map", "--map-data", 130, 0 },
1588 { "-t", "--terminal", 120, 1 },
1589 { "-nw", "--no-windows", 110, 0 },
1590 { "-batch", "--batch", 100, 0 },
1591 { "-help", "--help", 90, 0 },
1592 { "-no-unibyte", "--no-unibyte", 83, 0 },
1593 { "-multibyte", "--multibyte", 82, 0 },
1594 { "-unibyte", "--unibyte", 81, 0 },
1595 { "-no-multibyte", "--no-multibyte", 80, 0 },
1597 { "-nl", "--no-loadup", 70, 0 },
1599 /* -d must come last before the options handled in startup.el. */
1600 { "-d", "--display", 60, 1 },
1601 { "-display", 0, 60, 1 },
1602 /* Now for the options handled in startup.el. */
1603 { "-q", "--no-init-file", 50, 0 },
1604 { "-no-init-file", 0, 50, 0 },
1605 { "-no-site-file", "--no-site-file", 40, 0 },
1606 { "-u", "--user", 30, 1 },
1607 { "-user", 0, 30, 1 },
1608 { "-debug-init", "--debug-init", 20, 0 },
1609 { "-i", "--icon-type", 15, 0 },
1610 { "-itype", 0, 15, 0 },
1611 { "-iconic", "--iconic", 15, 0 },
1612 { "-bg", "--background-color", 10, 1 },
1613 { "-background", 0, 10, 1 },
1614 { "-fg", "--foreground-color", 10, 1 },
1615 { "-foreground", 0, 10, 1 },
1616 { "-bd", "--border-color", 10, 1 },
1617 { "-bw", "--border-width", 10, 1 },
1618 { "-ib", "--internal-border", 10, 1 },
1619 { "-ms", "--mouse-color", 10, 1 },
1620 { "-cr", "--cursor-color", 10, 1 },
1621 { "-fn", "--font", 10, 1 },
1622 { "-font", 0, 10, 1 },
1623 { "-g", "--geometry", 10, 1 },
1624 { "-geometry", 0, 10, 1 },
1625 { "-T", "--title", 10, 1 },
1626 { "-title", 0, 10, 1 },
1627 { "-name", "--name", 10, 1 },
1628 { "-xrm", "--xrm", 10, 1 },
1629 { "-r", "--reverse-video", 5, 0 },
1631 { "-reverse", 0, 5, 0 },
1632 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1633 { "-vb", "--vertical-scroll-bars", 5, 0 },
1634 /* These have the same priority as ordinary file name args,
1635 so they are not reordered with respect to those. */
1636 { "-L", "--directory", 0, 1 },
1637 { "-directory", 0, 0, 1 },
1638 { "-l", "--load", 0, 1 },
1639 { "-load", 0, 0, 1 },
1640 { "-f", "--funcall", 0, 1 },
1641 { "-funcall", 0, 0, 1 },
1642 { "-eval", "--eval", 0, 1 },
1643 { "-execute", "--execute", 0, 1 },
1644 { "-find-file", "--find-file", 0, 1 },
1645 { "-visit", "--visit", 0, 1 },
1646 { "-file", "--file", 0, 1 },
1647 { "-insert", "--insert", 0, 1 },
1648 /* This should be processed after ordinary file name args and the like. */
1649 { "-kill", "--kill", -10, 0 },
1652 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1653 so that the highest priority ones come first.
1654 Do not change the order of elements of equal priority.
1655 If an option takes an argument, keep it and its argument together.
1657 If an option that takes no argument appears more
1658 than once, eliminate all but one copy of it. */
1661 sort_args (argc
, argv
)
1665 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1666 /* For each element of argv,
1667 the corresponding element of options is:
1668 0 for an option that takes no arguments,
1669 1 for an option that takes one argument, etc.
1670 -1 for an ordinary non-option argument. */
1671 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1672 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1674 int incoming_used
= 1;
1678 /* Categorize all the options,
1679 and figure out which argv elts are option arguments. */
1680 for (from
= 1; from
< argc
; from
++)
1684 if (argv
[from
][0] == '-')
1689 /* If we have found "--", don't consider
1690 any more arguments as options. */
1691 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1693 /* Leave the "--", and everything following it, at the end. */
1694 for (; from
< argc
; from
++)
1696 priority
[from
] = -100;
1702 /* Look for a match with a known old-fashioned option. */
1703 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1704 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1706 options
[from
] = standard_args
[i
].nargs
;
1707 priority
[from
] = standard_args
[i
].priority
;
1708 if (from
+ standard_args
[i
].nargs
>= argc
)
1709 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1710 from
+= standard_args
[i
].nargs
;
1714 /* Look for a match with a known long option.
1715 MATCH is -1 if no match so far, -2 if two or more matches so far,
1716 >= 0 (the table index of the match) if just one match so far. */
1717 if (argv
[from
][1] == '-')
1720 thislen
= strlen (argv
[from
]);
1721 equals
= index (argv
[from
], '=');
1723 thislen
= equals
- argv
[from
];
1726 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1727 if (standard_args
[i
].longname
1728 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1737 /* If we found exactly one match, use that. */
1740 options
[from
] = standard_args
[match
].nargs
;
1741 priority
[from
] = standard_args
[match
].priority
;
1742 /* If --OPTION=VALUE syntax is used,
1743 this option uses just one argv element. */
1746 if (from
+ options
[from
] >= argc
)
1747 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1748 from
+= options
[from
];
1755 /* Copy the arguments, in order of decreasing priority, to NEW. */
1757 while (incoming_used
< argc
)
1760 int best_priority
= -9999;
1762 /* Find the highest priority remaining option.
1763 If several have equal priority, take the first of them. */
1764 for (from
= 1; from
< argc
; from
++)
1766 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1768 best_priority
= priority
[from
];
1771 /* Skip option arguments--they are tied to the options. */
1772 if (options
[from
] > 0)
1773 from
+= options
[from
];
1779 /* Copy the highest priority remaining option, with its args, to NEW.
1780 Unless it is a duplicate of the previous one. */
1781 if (! (options
[best
] == 0
1782 && ! strcmp (new[to
- 1], argv
[best
])))
1784 new[to
++] = argv
[best
];
1785 for (i
= 0; i
< options
[best
]; i
++)
1786 new[to
++] = argv
[best
+ i
+ 1];
1789 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1791 /* Clear out this option in ARGV. */
1793 for (i
= 0; i
< options
[best
]; i
++)
1794 argv
[best
+ i
+ 1] = 0;
1797 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1801 bcopy (new, argv
, sizeof (char *) * argc
);
1808 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1809 "Exit the Emacs job and kill it.\n\
1810 If ARG is an integer, return ARG as the exit program code.\n\
1811 If ARG is a string, stuff it as keyboard input.\n\n\
1812 The value of `kill-emacs-hook', if not void,\n\
1813 is a list of functions (of no args),\n\
1814 all of which are called before Emacs is actually killed.")
1818 struct gcpro gcpro1
;
1825 if (!NILP (Vrun_hooks
) && !noninteractive
)
1826 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1830 /* Is it really necessary to do this deassign
1831 when we are going to exit anyway? */
1836 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1838 /* If we have an auto-save list file,
1839 kill it because we are exiting Emacs deliberately (not crashing).
1840 Do it after shut_down_emacs, which does an auto-save. */
1841 if (STRINGP (Vauto_save_list_file_name
))
1842 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1844 exit (INTEGERP (arg
) ? XINT (arg
)
1855 /* Perform an orderly shutdown of Emacs. Autosave any modified
1856 buffers, kill any child processes, clean up the terminal modes (if
1857 we're in the foreground), and other stuff like that. Don't perform
1858 any redisplay; this may be called when Emacs is shutting down in
1859 the background, or after its X connection has died.
1861 If SIG is a signal number, print a message for it.
1863 This is called by fatal signal handlers, X protocol error handlers,
1867 shut_down_emacs (sig
, no_x
, stuff
)
1871 /* Prevent running of hooks from now on. */
1874 /* If we are controlling the terminal, reset terminal modes */
1875 #ifdef EMACS_HAVE_TTY_PGRP
1877 int pgrp
= EMACS_GETPGRP (0);
1880 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1885 if (sig
&& sig
!= SIGTERM
)
1886 fprintf (stderr
, "Fatal error (%d).", sig
);
1894 stuff_buffered_input (stuff
);
1896 kill_buffer_processes (Qnil
);
1897 Fdo_auto_save (Qt
, Qnil
);
1899 #ifdef CLASH_DETECTION
1900 unlock_all_files ();
1904 kill_vms_processes ();
1907 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1908 #ifdef HAVE_X_WINDOWS
1909 /* It's not safe to call intern here. Maybe we are crashing. */
1910 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1911 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1912 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1914 Fx_close_current_connection ();
1915 #endif /* HAVE_X_WINDOWS */
1919 /* There is a tendency for a SIGIO signal to arrive within exit,
1920 and cause a SIGHUP because the input descriptor is already closed. */
1922 signal (SIGIO
, SIG_IGN
);
1929 /* Do this only if terminating normally, we want glyph matrices
1930 etc. in a core dump. */
1931 if (sig
== 0 || sig
== SIGTERM
)
1933 check_glyph_memory ();
1934 check_message_stack ();
1948 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1949 "Dump current state of Emacs into data file FILENAME.\n\
1950 This function exists on systems that use HAVE_SHM.")
1952 Lisp_Object filename
;
1954 extern char my_edata
[];
1958 CHECK_STRING (filename
, 0);
1959 filename
= Fexpand_file_name (filename
, Qnil
);
1962 Vpurify_flag
= Qnil
;
1965 /* Tell malloc where start of impure now is */
1966 /* Also arrange for warnings when nearly out of space. */
1967 #ifndef SYSTEM_MALLOC
1968 memory_warnings (my_edata
, malloc_warning
);
1970 map_out_data (XSTRING (filename
)->data
);
1977 #else /* not HAVE_SHM */
1979 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1980 "Dump current state of Emacs into executable file FILENAME.\n\
1981 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1982 This is used in the file `loadup.el' when building Emacs.\n\
1984 You must run Emacs in batch mode in order to dump it.")
1986 Lisp_Object filename
, symfile
;
1988 extern char my_edata
[];
1991 int count
= BINDING_STACK_SIZE ();
1995 if (! noninteractive
)
1996 error ("Dumping Emacs works only in batch mode");
1998 /* Bind `command-line-processed' to nil before dumping,
1999 so that the dumped Emacs will process its command line
2000 and set up to work with X windows if appropriate. */
2001 symbol
= intern ("command-line-process");
2002 specbind (symbol
, Qnil
);
2004 CHECK_STRING (filename
, 0);
2005 filename
= Fexpand_file_name (filename
, Qnil
);
2006 if (!NILP (symfile
))
2008 CHECK_STRING (symfile
, 0);
2009 if (XSTRING (symfile
)->size
)
2010 symfile
= Fexpand_file_name (symfile
, Qnil
);
2014 Vpurify_flag
= Qnil
;
2017 set_time_zone_rule (dump_tz
);
2018 #ifndef LOCALTIME_CACHE
2019 /* Force a tz reload, since set_time_zone_rule doesn't. */
2026 mapout_data (XSTRING (filename
)->data
);
2028 /* Tell malloc where start of impure now is */
2029 /* Also arrange for warnings when nearly out of space. */
2030 #ifndef SYSTEM_MALLOC
2032 /* On Windows, this was done before dumping, and that once suffices.
2033 Meanwhile, my_edata is not valid on Windows. */
2034 memory_warnings (my_edata
, malloc_warning
);
2035 #endif /* not WINDOWSNT */
2037 #ifdef DOUG_LEA_MALLOC
2038 malloc_state_ptr
= malloc_get_state ();
2041 #ifdef USE_MMAP_FOR_BUFFERS
2044 unexec (XSTRING (filename
)->data
,
2045 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
2046 #ifdef USE_MMAP_FOR_BUFFERS
2049 #ifdef DOUG_LEA_MALLOC
2050 free (malloc_state_ptr
);
2052 #endif /* not VMS */
2056 return unbind_to (count
, Qnil
);
2059 #endif /* not HAVE_SHM */
2061 #endif /* not CANNOT_DUMP */
2064 /* Recover from setlocale (LC_ALL, ""). */
2068 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2069 so that numbers are read and printed properly for Emacs Lisp. */
2070 setlocale (LC_NUMERIC
, "C");
2073 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2076 synchronize_locale (category
, plocale
, desired_locale
)
2078 Lisp_Object
*plocale
;
2079 Lisp_Object desired_locale
;
2081 if (! EQ (*plocale
, desired_locale
))
2083 *plocale
= desired_locale
;
2084 setlocale (category
, (STRINGP (desired_locale
)
2085 ? (char *)(XSTRING (desired_locale
)->data
)
2090 /* Set system time locale to match Vsystem_time_locale, if possible. */
2092 synchronize_system_time_locale ()
2094 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2095 Vsystem_time_locale
);
2098 /* Set system messages locale to match Vsystem_messages_locale, if
2101 synchronize_system_messages_locale ()
2104 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2105 Vsystem_messages_locale
);
2108 #endif /* HAVE_SETLOCALE */
2115 decode_env_path (evarname
, defalt
)
2116 char *evarname
, *defalt
;
2118 register char *path
, *p
;
2119 Lisp_Object lpath
, element
, tem
;
2121 /* It's okay to use getenv here, because this function is only used
2122 to initialize variables when Emacs starts up, and isn't called
2125 path
= (char *) getenv (evarname
);
2131 /* Ensure values from the environment use the proper directory separator. */
2134 p
= alloca (strlen (path
) + 1);
2138 if ('/' == DIRECTORY_SEP
)
2139 dostounix_filename (path
);
2141 unixtodos_filename (path
);
2147 p
= index (path
, SEPCHAR
);
2148 if (!p
) p
= path
+ strlen (path
);
2149 element
= (p
- path
? make_string (path
, p
- path
)
2150 : build_string ("."));
2152 /* Add /: to the front of the name
2153 if it would otherwise be treated as magic. */
2154 tem
= Ffind_file_name_handler (element
, Qt
);
2156 element
= concat2 (build_string ("/:"), element
);
2158 lpath
= Fcons (element
, lpath
);
2164 return Fnreverse (lpath
);
2170 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2171 staticpro (&Qfile_name_handler_alist
);
2175 defsubr (&Sdump_emacs_data
);
2177 defsubr (&Sdump_emacs
);
2181 defsubr (&Skill_emacs
);
2183 defsubr (&Sinvocation_name
);
2184 defsubr (&Sinvocation_directory
);
2186 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2187 "Args passed by shell to Emacs, as a list of strings.");
2189 DEFVAR_LISP ("system-type", &Vsystem_type
,
2190 "Value is symbol indicating type of operating system you are using.");
2191 Vsystem_type
= intern (SYSTEM_TYPE
);
2193 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2194 "Value is string indicating configuration Emacs was built for.\n\
2195 On MS-Windows, the value reflects the OS flavor and version on which\n\
2196 Emacs is running.");
2197 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2199 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2200 "String containing the configuration options Emacs was built with.");
2201 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2203 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2204 "Non-nil means Emacs is running without interactive terminal.");
2206 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2207 "Hook to be run whenever kill-emacs is called.\n\
2208 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
2209 in other similar situations), functions placed on this hook should not\n\
2210 expect to be able to interact with the user. To ask for confirmation,\n\
2211 see `kill-emacs-query-functions' instead.");
2212 Vkill_emacs_hook
= Qnil
;
2214 empty_string
= build_string ("");
2215 staticpro (&empty_string
);
2218 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2219 "Hook to be run whenever emacs receives a USR1 signal");
2220 Vsignal_USR1_hook
= Qnil
;
2222 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2223 "Hook to be run whenever emacs receives a USR2 signal");
2224 Vsignal_USR2_hook
= Qnil
;
2229 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2230 "Priority for Emacs to run at.\n\
2231 This value is effective only if set before Emacs is dumped,\n\
2232 and only if the Emacs executable is installed with setuid to permit\n\
2233 it to change priority. (Emacs sets its uid back to the real uid.)\n\
2234 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
2235 before you compile Emacs, to enable the code for this feature.");
2238 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2239 "The directory separator in search paths, as a string.");
2242 Vpath_separator
= make_string (&c
, 1);
2245 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2246 "The program name that was used to run Emacs.\n\
2247 Any directory names are omitted.");
2249 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2250 "The directory in which the Emacs executable was found, to run it.\n\
2251 The value is nil if that directory's name is not known.");
2253 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2254 "A directory within which to look for the `lib-src' and `etc' directories.\n\
2255 This is non-nil when we can't find those directories in their standard\n\
2256 installed locations, but we can find them\n\
2257 near where the Emacs executable was found.");
2258 Vinstallation_directory
= Qnil
;
2260 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2261 "System locale for messages.");
2262 Vsystem_messages_locale
= Qnil
;
2264 DEFVAR_LISP ("previous-system-messages-locale",
2265 &Vprevious_system_messages_locale
,
2266 "Most recently used system locale for messages.");
2267 Vprevious_system_messages_locale
= Qnil
;
2269 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2270 "System locale for time.");
2271 Vsystem_time_locale
= Qnil
;
2273 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2274 "Most recently used system locale for time.");
2275 Vprevious_system_time_locale
= Qnil
;