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>
70 #ifdef HAVE_PERSONALITY_LINUX32
71 #include <sys/personality.h>
79 #if !defined (USG) || defined (BSD_PGRPS)
81 #define setpgrp setpgid
85 extern void malloc_warning
P_ ((char *));
86 extern void set_time_zone_rule
P_ ((char *));
88 extern char *index
P_ ((const char *, int));
91 /* Make these values available in GDB, which doesn't see macros. */
99 int gdb_use_union
= 0;
101 int gdb_use_union
= 1;
103 EMACS_INT gdb_valbits
= VALBITS
;
104 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
106 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
108 EMACS_INT gdb_data_seg_bits
= 0;
110 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
111 EMACS_INT gdb_array_mark_flag
= ARRAY_MARK_FLAG
;
113 /* Command line args from shell, as list of strings. */
114 Lisp_Object Vcommand_line_args
;
116 /* The name under which Emacs was invoked, with any leading directory
118 Lisp_Object Vinvocation_name
;
120 /* The directory name from which Emacs was invoked. */
121 Lisp_Object Vinvocation_directory
;
123 /* The directory name in which to find subdirs such as lisp and etc.
124 nil means get them only from PATH_LOADSEARCH. */
125 Lisp_Object Vinstallation_directory
;
127 /* Hook run by `kill-emacs' before it does really anything. */
128 Lisp_Object Vkill_emacs_hook
;
130 /* An empty lisp string. To avoid having to build any other. */
131 Lisp_Object empty_string
;
133 /* Search path separator. */
134 Lisp_Object Vpath_separator
;
136 /* Set nonzero after Emacs has started up the first time.
137 Prevents reinitialization of the Lisp world and keymaps
138 on subsequent starts. */
141 #ifdef DOUG_LEA_MALLOC
142 /* Preserves a pointer to the memory allocated that copies that
143 static data inside glibc's malloc. */
144 void *malloc_state_ptr
;
145 /* From glibc, a routine that returns a copy of the malloc internal state. */
146 extern void *malloc_get_state ();
147 /* From glibc, a routine that overwrites the malloc internal state. */
148 extern void malloc_set_state ();
149 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
150 dumping. Used to work around a bug in glibc's malloc. */
151 int malloc_using_checking
;
154 /* Variable whose value is symbol giving operating system type. */
155 Lisp_Object Vsystem_type
;
157 /* Variable whose value is string giving configuration built for. */
158 Lisp_Object Vsystem_configuration
;
160 /* Variable whose value is string giving configuration options,
161 for use when reporting bugs. */
162 Lisp_Object Vsystem_configuration_options
;
164 Lisp_Object Qfile_name_handler_alist
;
166 /* Current and previous system locales for messages and time. */
167 Lisp_Object Vsystem_messages_locale
;
168 Lisp_Object Vprevious_system_messages_locale
;
169 Lisp_Object Vsystem_time_locale
;
170 Lisp_Object Vprevious_system_time_locale
;
172 /* If non-zero, emacs should not attempt to use a window-specific code,
173 but instead should use the virtual terminal under which it was started. */
174 int inhibit_window_system
;
176 /* If nonzero, set Emacs to run at this priority. This is also used
177 in child_setup and sys_suspend to make sure subshells run at normal
178 priority; those functions have their own extern declaration. */
179 EMACS_INT emacs_priority
;
181 /* If non-zero, a filter or a sentinel is running. Tested to save the match
182 data on the first attempt to change it inside asynchronous code. */
183 int running_asynch_code
;
187 extern int inherited_pgroup
;
190 #ifdef HAVE_X_WINDOWS
191 /* If non-zero, -d was specified, meaning we're using some window system. */
195 /* An address near the bottom of the stack.
196 Tells GC how to save a copy of the stack. */
199 /* The address where the heap starts (from the first sbrk (0) call). */
200 static void *my_heap_start
;
202 /* The gap between BSS end and heap start as far as we can tell. */
203 static unsigned long heap_bss_diff
;
205 /* If the gap between BSS end and heap start is larger than this we try to
206 work around it, and if that fails, output a warning in dump-emacs. */
207 #define MAX_HEAP_BSS_DIFF (1024*1024)
210 #ifdef HAVE_WINDOW_SYSTEM
211 extern Lisp_Object Vwindow_system
;
212 #endif /* HAVE_WINDOW_SYSTEM */
214 extern Lisp_Object Vauto_save_list_file_name
;
216 extern Lisp_Object Vinhibit_redisplay
;
218 #ifdef USG_SHARED_LIBRARIES
219 /* If nonzero, this is the place to put the end of the writable segment
222 unsigned int bss_end
= 0;
225 /* Nonzero means running Emacs without interactive terminal. */
229 /* Value of Lisp variable `noninteractive'.
230 Normally same as C variable `noninteractive'
231 but nothing terrible happens if user sets this one. */
235 /* Save argv and argc. */
239 static void sort_args ();
240 void syms_of_emacs ();
242 /* MSVC needs each string be shorter than 2048 bytes, so the usage
243 strings below are split to not overflow this limit. */
245 Usage: %s [OPTION-OR-FILENAME]...\n\
247 Run Emacs, the extensible, customizable, self-documenting real-time\n\
248 display editor. The recommended way to start Emacs for normal editing\n\
249 is with no options at all.\n\
251 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
252 read the main documentation for these command-line arguments.\n\
254 Initialization options:\n\
256 --batch do not do interactive display; implies -q\n\
257 --debug-init enable Emacs Lisp debugger for init file\n\
258 --display, -d DISPLAY use X server DISPLAY\n\
259 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
260 --no-desktop do not load a saved desktop\n\
261 --no-init-file, -q load neither ~/.emacs nor default.el\n\
262 --no-shared-memory, -nl do not use shared memory\n\
263 --no-site-file do not load site-start.el\n\
264 --no-splash do not display a splash screen on startup\n\
265 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
266 --script FILE run FILE as an Emacs Lisp script\n\
267 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
268 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
269 --user, -u USER load ~USER/.emacs instead of your own\n\
275 FILE visit FILE using find-file\n\
276 +LINE FILE visit FILE using find-file, then go to line LINE\n\
277 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
279 --directory, -L DIR add DIR to variable load-path\n\
280 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
281 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
282 --file FILE visit FILE using find-file\n\
283 --find-file FILE visit FILE using find-file\n\
284 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
285 --insert FILE insert contents of FILE into current buffer\n\
286 --kill exit without asking for confirmation\n\
287 --load, -l FILE load Emacs Lisp FILE using the load function\n\
288 --visit FILE visit FILE using find-file\n\
294 --background-color, -bg COLOR window background color\n\
295 --border-color, -bd COLOR main border color\n\
296 --border-width, -bw WIDTH width of main border\n\
297 --color MODE color mode for character terminals;\n\
298 MODE defaults to `auto', and can also\n\
299 be `never', `auto', `always',\n\
300 or a mode name like `ansi8'\n\
301 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
302 --font, -fn FONT default font; must be fixed-width\n\
303 --foreground-color, -fg COLOR window foreground color\n\
304 --fullheight, -fh make the first frame high as the screen\n\
305 --fullscreen, -fs make first frame fullscreen\n\
306 --fullwidth, -fw make the first frame wide as the screen\n\
307 --geometry, -g GEOMETRY window geometry\n\
308 --horizontal-scroll-bars, -hb enable horizontal scroll bars\n\
309 --icon-type, -i use picture of gnu for Emacs icon\n\
310 --iconic start Emacs in iconified state\n\
311 --internal-border, -ib WIDTH width between text and main border\n\
312 --line-spacing, -lsp PIXELS additional space to put between lines\n\
313 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
314 --name NAME title for initial Emacs frame\n\
315 --reverse-video, -r, -rv switch foreground and background\n\
316 --title, -T TITLE title for initial Emacs frame\n\
317 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
318 --xrm XRESOURCES set additional X resources\n\
319 --help display this help and exit\n\
320 --version output version information and exit\n\
322 You can generally also specify long option names with a single -; for\n\
323 example, -batch as well as --batch. You can use any unambiguous\n\
324 abbreviation for a --option.\n\
326 Various environment variables and window system resources also affect\n\
327 Emacs' operation. See the main documentation.\n\
331 Report bugs to %s. First, please see the Bugs\n\
332 section of the Emacs manual or the file BUGS.\n"
335 /* Signal code for the fatal signal that was received. */
336 int fatal_error_code
;
338 /* Nonzero if handling a fatal error already. */
339 int fatal_error_in_progress
;
341 /* If non-null, call this function from fatal_error_signal before
342 committing suicide. */
344 void (*fatal_error_signal_hook
) P_ ((void));
349 handle_USR1_signal (sig
)
352 struct input_event buf
;
354 bzero (&buf
, sizeof buf
);
355 buf
.kind
= USER_SIGNAL_EVENT
;
356 buf
.frame_or_window
= selected_frame
;
358 kbd_buffer_store_event (&buf
);
364 handle_USR2_signal (sig
)
367 struct input_event buf
;
369 bzero (&buf
, sizeof buf
);
370 buf
.kind
= USER_SIGNAL_EVENT
;
372 buf
.frame_or_window
= selected_frame
;
374 kbd_buffer_store_event (&buf
);
378 /* Handle bus errors, invalid instruction, etc. */
380 fatal_error_signal (sig
)
383 fatal_error_code
= sig
;
384 signal (sig
, SIG_DFL
);
386 TOTALLY_UNBLOCK_INPUT
;
388 /* If fatal error occurs in code below, avoid infinite recursion. */
389 if (! fatal_error_in_progress
)
391 fatal_error_in_progress
= 1;
393 shut_down_emacs (sig
, 0, Qnil
);
397 LIB$
STOP (SS$_ABORT
);
399 /* Signal the same code; this time it will really be fatal.
400 Remember that since we're in a signal handler, the signal we're
401 going to send is probably blocked, so we have to unblock it if we
402 want to really receive it. */
404 sigunblock (sigmask (fatal_error_code
));
407 if (fatal_error_signal_hook
)
408 fatal_error_signal_hook ();
410 kill (getpid (), fatal_error_code
);
416 /* Handler for SIGDANGER. */
418 memory_warning_signal (sig
)
421 signal (sig
, memory_warning_signal
);
423 malloc_warning ("Operating system warns that virtual memory is running low.\n");
425 /* It might be unsafe to call do_auto_save now. */
426 force_auto_save_soon ();
430 /* We define abort, rather than using it from the library,
431 so that GDB can return from a breakpoint here.
432 MSDOS has its own definition in msdos.c. */
434 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
436 #ifndef ABORT_RETURN_TYPE
437 #define ABORT_RETURN_TYPE void
443 kill (getpid (), SIGABRT
);
444 /* This shouldn't be executed, but it prevents a warning. */
450 /* Code for dealing with Lisp access to the Unix command line. */
453 init_cmdargs (argc
, argv
, skip_args
)
459 Lisp_Object name
, dir
, tem
;
460 int count
= SPECPDL_INDEX ();
461 Lisp_Object raw_name
;
466 raw_name
= build_string (argv
[0]);
468 /* Add /: to the front of the name
469 if it would otherwise be treated as magic. */
470 tem
= Ffind_file_name_handler (raw_name
, Qt
);
472 raw_name
= concat2 (build_string ("/:"), raw_name
);
474 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
475 Vinvocation_directory
= Ffile_name_directory (raw_name
);
477 /* If we got no directory in argv[0], search PATH to find where
478 Emacs actually came from. */
479 if (NILP (Vinvocation_directory
))
482 int yes
= openp (Vexec_path
, Vinvocation_name
,
483 Vexec_suffixes
, &found
, make_number (X_OK
));
486 /* Add /: to the front of the name
487 if it would otherwise be treated as magic. */
488 tem
= Ffind_file_name_handler (found
, Qt
);
490 found
= concat2 (build_string ("/:"), found
);
491 Vinvocation_directory
= Ffile_name_directory (found
);
495 if (!NILP (Vinvocation_directory
)
496 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
497 /* Emacs was started with relative path, like ./emacs.
499 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
501 Vinstallation_directory
= Qnil
;
503 if (!NILP (Vinvocation_directory
))
505 dir
= Vinvocation_directory
;
506 name
= Fexpand_file_name (Vinvocation_name
, dir
);
509 Lisp_Object tem
, lib_src_exists
;
510 Lisp_Object etc_exists
, info_exists
;
512 /* See if dir contains subdirs for use by Emacs.
513 Check for the ones that would exist in a build directory,
514 not including lisp and info. */
515 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
516 lib_src_exists
= Ffile_exists_p (tem
);
519 /* MSDOS installations frequently remove lib-src, but we still
520 must set installation-directory, or else info won't find
521 its files (it uses the value of installation-directory). */
522 tem
= Fexpand_file_name (build_string ("info"), dir
);
523 info_exists
= Ffile_exists_p (tem
);
528 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
530 tem
= Fexpand_file_name (build_string ("etc"), dir
);
531 etc_exists
= Ffile_exists_p (tem
);
532 if (!NILP (etc_exists
))
534 Vinstallation_directory
535 = Ffile_name_as_directory (dir
);
540 /* See if dir's parent contains those subdirs. */
541 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
542 lib_src_exists
= Ffile_exists_p (tem
);
546 /* See the MSDOS commentary above. */
547 tem
= Fexpand_file_name (build_string ("../info"), dir
);
548 info_exists
= Ffile_exists_p (tem
);
553 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
555 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
556 etc_exists
= Ffile_exists_p (tem
);
557 if (!NILP (etc_exists
))
559 tem
= Fexpand_file_name (build_string (".."), dir
);
560 Vinstallation_directory
561 = Ffile_name_as_directory (tem
);
566 /* If the Emacs executable is actually a link,
567 next try the dir that the link points into. */
568 tem
= Ffile_symlink_p (name
);
571 name
= Fexpand_file_name (tem
, dir
);
572 dir
= Ffile_name_directory (name
);
579 Vcommand_line_args
= Qnil
;
581 for (i
= argc
- 1; i
>= 0; i
--)
583 if (i
== 0 || i
> skip_args
)
585 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
588 unbind_to (count
, Qnil
);
591 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
592 doc
: /* Return the program name that was used to run Emacs.
593 Any directory names are omitted. */)
596 return Fcopy_sequence (Vinvocation_name
);
599 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
601 doc
: /* Return the directory name in which the Emacs executable was located. */)
604 return Fcopy_sequence (Vinvocation_directory
);
609 #ifdef LINK_CRTL_SHARE
610 #ifdef SHARABLE_LIB_BUG
611 extern noshare
char **environ
;
612 #endif /* SHARABLE_LIB_BUG */
613 #endif /* LINK_CRTL_SHARE */
617 /* A valid but unlikely value for the TZ environment value.
618 It is OK (though a bit slower) if the user actually chooses this value. */
619 static char dump_tz
[] = "UtC0";
622 #ifndef ORDINARY_LINK
623 /* We don't include crtbegin.o and crtend.o in the link,
624 so these functions and variables might be missed.
625 Provide dummy definitions to avoid error.
626 (We don't have any real constructors or destructors.) */
628 #ifndef GCC_CTORS_IN_LIBC
629 void __do_global_ctors ()
631 void __do_global_ctors_aux ()
633 void __do_global_dtors ()
635 /* GNU/Linux has a bug in its library; avoid an error. */
637 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
639 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
640 #endif /* GCC_CTORS_IN_LIBC */
643 #endif /* __GNUC__ */
644 #endif /* ORDINARY_LINK */
646 /* Test whether the next argument in ARGV matches SSTR or a prefix of
647 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
648 (the argument is supposed to have a value) store in *VALPTR either
649 the next argument or the portion of this one after the equal sign.
650 ARGV is read starting at position *SKIPPTR; this index is advanced
651 by the number of arguments used.
653 Too bad we can't just use getopt for all of this, but we don't have
654 enough information to do it right. */
657 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
670 /* Don't access argv[argc]; give up in advance. */
671 if (argc
<= *skipptr
+ 1)
674 arg
= argv
[*skipptr
+1];
677 if (strcmp (arg
, sstr
) == 0)
681 *valptr
= argv
[*skipptr
+2];
688 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
689 ? p
- arg
: strlen (arg
));
690 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
692 else if (valptr
== NULL
)
703 else if (argv
[*skipptr
+2] != NULL
)
705 *valptr
= argv
[*skipptr
+2];
715 #ifdef DOUG_LEA_MALLOC
717 /* malloc can be invoked even before main (e.g. by the dynamic
718 linker), so the dumped malloc state must be restored as early as
719 possible using this special hook. */
722 malloc_initialize_hook ()
725 extern char **environ
;
730 if (!malloc_using_checking
)
731 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
732 ignored if the heap to be restored was constructed without
733 malloc checking. Can't use unsetenv, since that calls malloc. */
737 for (p
= environ
; p
&& *p
; p
++)
738 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
747 malloc_set_state (malloc_state_ptr
);
748 free (malloc_state_ptr
);
752 if (my_heap_start
== 0)
753 my_heap_start
= sbrk (0);
754 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
758 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
760 #endif /* DOUG_LEA_MALLOC */
763 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
764 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
766 /* This function is used to determine an address to which bug report should
770 bug_reporting_address ()
776 temp
= Fsymbol_value (intern ("emacs-version"));
778 /* When `emacs-version' is invalid, use normal address. */
780 return REPORT_EMACS_BUG_ADDRESS
;
782 string
= SDATA (temp
);
784 /* Count dots in `emacs-version'. */
792 /* When `emacs-version' has at least three dots, it is development or
793 pretest version of Emacs. */
794 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
814 char stack_bottom_variable
;
815 int do_initial_setlocale
;
820 #ifdef HAVE_SETRLIMIT
827 extern Lisp_Object
*stack_base
;
833 extern char my_endbss
[];
834 extern char *my_endbss_static
;
836 if (my_heap_start
== 0)
837 my_heap_start
= sbrk (0);
839 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
842 #ifdef LINUX_SBRK_BUG
846 #ifdef RUN_TIME_REMAP
848 run_time_remap (argv
[0]);
853 unexec_init_emacs_zone ();
856 sort_args (argc
, argv
);
858 while (argv
[argc
]) argc
++;
860 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
861 /* We don't know the version number unless this is a dumped Emacs.
862 So ignore --version otherwise. */
866 tem
= Fsymbol_value (intern ("emacs-version"));
869 fprintf (stderr
, "Invalid value of `emacs-version'\n");
874 printf ("GNU Emacs %s\n", SDATA (tem
));
875 printf ("Copyright (C) 2004 Free Software Foundation, Inc.\n");
876 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
877 printf ("You may redistribute copies of Emacs\n");
878 printf ("under the terms of the GNU General Public License.\n");
879 printf ("For more information about these matters, ");
880 printf ("see the file named COPYING.\n");
885 #ifdef HAVE_PERSONALITY_LINUX32
886 /* See if there is a gap between the end of BSS and the heap.
887 In that case, set personality and exec ourself again. */
889 && (strcmp (argv
[argc
-1], "dump") == 0
890 || strcmp (argv
[argc
-1], "bootstrap") == 0)
891 && heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
893 if (! getenv ("EMACS_HEAP_EXEC"))
895 /* Set this so we only do this once. */
896 putenv("EMACS_HEAP_EXEC=true");
897 personality (PER_LINUX32
);
898 execvp (argv
[0], argv
);
900 /* If the exec fails, try to dump anyway. */
904 #endif /* HAVE_PERSONALITY_LINUX32 */
907 /* Map in shared memory, if we are using that. */
909 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
912 /* The shared memory was just restored, which clobbered this. */
918 /* The shared memory was just restored, which clobbered this. */
925 extern int malloc_cookie
;
926 /* This helps out unexnext.c. */
928 if (malloc_jumpstart (malloc_cookie
) != 0)
929 printf ("malloc jumpstart failed!\n");
934 /* Skip process serial number passed in the form -psn_x_y as
935 command-line argument. */
936 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
941 /* If -map specified, map the data file in. */
944 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &file
, &skip_args
))
948 #ifdef LINK_CRTL_SHARE
949 #ifdef SHARABLE_LIB_BUG
950 /* Bletcherous shared libraries! */
952 stdin
= fdopen (0, "r");
954 stdout
= fdopen (1, "w");
956 stderr
= fdopen (2, "w");
959 #endif /* SHARABLE_LIB_BUG */
960 #endif /* LINK_CRTL_SHARE */
963 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
964 /* Extend the stack space available.
965 Don't do that if dumping, since some systems (e.g. DJGPP)
966 might define a smaller stack limit at that time. */
969 && (!noninteractive
|| initialized
)
971 && !getrlimit (RLIMIT_STACK
, &rlim
))
974 extern int re_max_failures
;
975 /* Approximate the amount regex.c needs per unit of re_max_failures. */
976 int ratio
= 20 * sizeof (char *);
977 /* Then add 33% to cover the size of the smaller stacks that regex.c
978 successively allocates and discards, on its way to the maximum. */
980 /* Add in some extra to cover
981 what we're likely to use for other reasons. */
982 newlim
= re_max_failures
* ratio
+ 200000;
984 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
985 stack allocation routine for new process that the allocation
986 fails if stack limit is not on page boundary. So, round up the
987 new limit to page boundary. */
988 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
990 if (newlim
> rlim
.rlim_max
)
992 newlim
= rlim
.rlim_max
;
993 /* Don't let regex.c overflow the stack we have. */
994 re_max_failures
= (newlim
- 200000) / ratio
;
996 if (rlim
.rlim_cur
< newlim
)
997 rlim
.rlim_cur
= newlim
;
999 setrlimit (RLIMIT_STACK
, &rlim
);
1001 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1003 /* Record (approximately) where the stack begins. */
1004 stack_bottom
= &stack_bottom_variable
;
1006 #ifdef USG_SHARED_LIBRARIES
1008 brk ((void *)bss_end
);
1013 #ifndef SYSTEM_MALLOC
1014 /* Arrange to get warning messages as memory fills up. */
1015 memory_warnings (0, malloc_warning
);
1017 /* Call malloc at least once, to run the initial __malloc_hook.
1018 Also call realloc and free for consistency. */
1019 free (realloc (malloc (4), 4));
1021 /* Arrange to disable interrupt input inside malloc etc. */
1022 uninterrupt_malloc ();
1023 #endif /* not SYSTEM_MALLOC */
1025 #if defined (MSDOS) || defined (WINDOWSNT)
1026 /* We do all file input/output as binary files. When we need to translate
1027 newlines, we do that manually. */
1029 #endif /* MSDOS || WINDOWSNT */
1033 if (!isatty (fileno (stdin
)))
1034 setmode (fileno (stdin
), O_BINARY
);
1035 if (!isatty (fileno (stdout
)))
1038 setmode (fileno (stdout
), O_BINARY
);
1040 #else /* not __DJGPP__ >= 2 */
1041 (stdin
)->_flag
&= ~_IOTEXT
;
1042 (stdout
)->_flag
&= ~_IOTEXT
;
1043 (stderr
)->_flag
&= ~_IOTEXT
;
1044 #endif /* not __DJGPP__ >= 2 */
1047 #ifdef SET_EMACS_PRIORITY
1049 nice (emacs_priority
);
1051 #endif /* SET_EMACS_PRIORITY */
1053 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1054 The build procedure uses this while dumping, to ensure that the
1055 dumped Emacs does not have its system locale tables initialized,
1056 as that might cause screwups when the dumped Emacs starts up. */
1058 char *lc_all
= getenv ("LC_ALL");
1059 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1062 /* Set locale now, so that initial error messages are localized properly.
1063 fixup_locale must wait until later, since it builds strings. */
1064 if (do_initial_setlocale
)
1065 setlocale (LC_ALL
, "");
1067 #ifdef EXTRA_INITIALIZE
1071 inhibit_window_system
= 0;
1073 /* Handle the -t switch, which specifies filename to use as terminal. */
1077 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1082 result
= emacs_open (term
, O_RDWR
, 0);
1085 char *errstring
= strerror (errno
);
1086 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1092 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1095 fprintf (stderr
, "Using %s\n", term
);
1096 #ifdef HAVE_WINDOW_SYSTEM
1097 inhibit_window_system
= 1; /* -t => -nw */
1104 /* Command line option --no-windows is deprecated and thus not mentioned
1105 in the manual and usage informations. */
1106 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1107 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1108 inhibit_window_system
= 1;
1110 /* Handle the -batch switch, which means don't do interactive display. */
1112 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1114 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1116 noninteractive
= 1; /* Set batch mode. */
1117 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1118 handled in proper sequence. */
1119 argv
[skip_args
- 1] = "-l";
1121 sort_args (argc
, argv
);
1124 /* Handle the --help option, which gives a usage message. */
1125 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1127 printf (USAGE1
, argv
[0], USAGE2
);
1129 printf (USAGE4
, bug_reporting_address ());
1133 if (! noninteractive
)
1138 inherited_pgroup
= EMACS_GETPGRP (0);
1139 setpgrp (0, getpid ());
1142 #if defined (USG5) && defined (INTERRUPT_INPUT)
1150 /* Don't catch SIGHUP if dumping. */
1157 sigblock (sigmask (SIGHUP
));
1158 /* In --batch mode, don't catch SIGHUP if already ignored.
1159 That makes nohup work. */
1160 if (! noninteractive
1161 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1162 signal (SIGHUP
, fatal_error_signal
);
1163 sigunblock (sigmask (SIGHUP
));
1168 ! noninteractive
|| initialized
1174 /* Don't catch these signals in batch mode if dumping.
1175 On some machines, this sets static data that would make
1176 signal fail to work right when the dumped Emacs is run. */
1177 signal (SIGQUIT
, fatal_error_signal
);
1178 signal (SIGILL
, fatal_error_signal
);
1179 signal (SIGTRAP
, fatal_error_signal
);
1181 signal (SIGUSR1
, handle_USR1_signal
);
1183 signal (SIGUSR2
, handle_USR2_signal
);
1187 signal (SIGABRT
, fatal_error_signal
);
1190 signal (SIGHWE
, fatal_error_signal
);
1193 signal (SIGPRE
, fatal_error_signal
);
1196 signal (SIGORE
, fatal_error_signal
);
1199 signal (SIGUME
, fatal_error_signal
);
1202 signal (SIGDLK
, fatal_error_signal
);
1205 signal (SIGCPULIM
, fatal_error_signal
);
1208 /* This is missing on some systems - OS/2, for example. */
1209 signal (SIGIOT
, fatal_error_signal
);
1212 signal (SIGEMT
, fatal_error_signal
);
1214 signal (SIGFPE
, fatal_error_signal
);
1216 signal (SIGBUS
, fatal_error_signal
);
1218 signal (SIGSEGV
, fatal_error_signal
);
1220 signal (SIGSYS
, fatal_error_signal
);
1222 signal (SIGTERM
, fatal_error_signal
);
1224 signal (SIGXCPU
, fatal_error_signal
);
1227 signal (SIGXFSZ
, fatal_error_signal
);
1228 #endif /* SIGXFSZ */
1231 /* This just means available memory is getting low. */
1232 signal (SIGDANGER
, memory_warning_signal
);
1236 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1237 signal (SIGXCPU
, fatal_error_signal
);
1239 signal (SIGIOINT
, fatal_error_signal
);
1241 signal (SIGGRANT
, fatal_error_signal
);
1242 signal (SIGRETRACT
, fatal_error_signal
);
1243 signal (SIGSOUND
, fatal_error_signal
);
1244 signal (SIGMSG
, fatal_error_signal
);
1248 noninteractive1
= noninteractive
;
1250 /* Perform basic initializations (not merely interning symbols). */
1257 init_character_once ();
1258 init_charset_once ();
1259 init_coding_once ();
1260 init_syntax_once (); /* Create standard syntax table. */
1261 init_category_once (); /* Create standard category table. */
1262 /* Must be done before init_buffer. */
1263 init_casetab_once ();
1264 init_buffer_once (); /* Create buffer table and some buffers. */
1265 init_minibuf_once (); /* Create list of minibuffers. */
1266 /* Must precede init_window_once. */
1268 /* Call syms_of_xfaces before init_window_once because that
1269 function creates Vterminal_frame. Termcap frames now use
1270 faces, and the face implementation uses some symbols as
1273 /* Call syms_of_keyboard before init_window_once because
1274 keyboard sets up symbols that include some face names that
1275 the X support will want to use. This can happen when
1276 CANNOT_DUMP is defined. */
1277 syms_of_keyboard ();
1280 /* init_window_once calls make_terminal_frame which on Mac OS
1281 creates a full-fledge output_mac type frame. This does not
1282 work correctly before syms_of_textprop, syms_of_macfns,
1283 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1284 syms_of_frame, mac_initialize, and init_keyboard have already
1286 syms_of_textprop ();
1300 init_window_once (); /* Init the window system. */
1301 init_fileio_once (); /* Must precede any path manipulation. */
1302 #ifdef HAVE_WINDOW_SYSTEM
1303 init_fringe_once (); /* Swap bitmaps if necessary. */
1304 #endif /* HAVE_WINDOW_SYSTEM */
1309 if (do_initial_setlocale
)
1312 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1313 Vsystem_time_locale
= Vprevious_system_time_locale
;
1318 #ifdef CLASH_DETECTION
1322 running_asynch_code
= 0;
1324 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1325 but not while dumping. */
1328 int inhibit_unibyte
= 0;
1330 /* --multibyte overrides EMACS_UNIBYTE. */
1331 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1332 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1333 /* Ignore EMACS_UNIBYTE before dumping. */
1334 || (!initialized
&& noninteractive
))
1335 inhibit_unibyte
= 1;
1337 /* --unibyte requests that we set up to do everything with single-byte
1338 buffers and strings. We need to handle this before calling
1339 init_lread, init_editfns and other places that generate Lisp strings
1340 from text in the environment. */
1341 /* Actually this shouldn't be needed as of 20.4 in a generally
1342 unibyte environment. As handa says, environment values
1343 aren't now decoded; also existing buffers are now made
1344 unibyte during startup if .emacs sets unibyte. Tested with
1345 8-bit data in environment variables and /etc/passwd, setting
1346 unibyte and Latin-1 in .emacs. -- Dave Love */
1347 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1348 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1349 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1351 Lisp_Object old_log_max
;
1352 Lisp_Object symbol
, tail
;
1354 symbol
= intern ("default-enable-multibyte-characters");
1355 Fset (symbol
, Qnil
);
1359 /* Erase pre-dump messages in *Messages* now so no abort. */
1360 old_log_max
= Vmessage_log_max
;
1361 XSETFASTINT (Vmessage_log_max
, 0);
1362 message_dolog ("", 0, 1, 0);
1363 Vmessage_log_max
= old_log_max
;
1366 for (tail
= Vbuffer_alist
; CONSP (tail
);
1371 buffer
= Fcdr (XCAR (tail
));
1372 /* Make a multibyte buffer unibyte. */
1373 if (BUF_Z_BYTE (XBUFFER (buffer
)) > BUF_Z (XBUFFER (buffer
)))
1375 struct buffer
*current
= current_buffer
;
1377 set_buffer_temp (XBUFFER (buffer
));
1378 Fset_buffer_multibyte (Qnil
);
1379 set_buffer_temp (current
);
1386 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1389 #ifdef HAVE_X_WINDOWS
1390 /* Stupid kludge to catch command-line display spec. We can't
1391 handle this argument entirely in window system dependent code
1392 because we don't even know which window system dependent code
1393 to run until we've recognized this argument. */
1395 char *displayname
= 0;
1396 int count_before
= skip_args
;
1398 /* Skip any number of -d options, but only use the last one. */
1401 int count_before_this
= skip_args
;
1403 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1405 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1410 count_before
= count_before_this
;
1413 /* If we have the form --display=NAME,
1414 convert it into -d name.
1415 This requires inserting a new element into argv. */
1416 if (displayname
!= 0 && skip_args
- count_before
== 1)
1418 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1421 for (j
= 0; j
< count_before
+ 1; j
++)
1423 new[count_before
+ 1] = "-d";
1424 new[count_before
+ 2] = displayname
;
1425 for (j
= count_before
+ 2; j
<argc
; j
++)
1426 new[j
+ 1] = argv
[j
];
1430 /* Change --display to -d, when its arg is separate. */
1431 else if (displayname
!= 0 && skip_args
> count_before
1432 && argv
[count_before
+ 1][1] == '-')
1433 argv
[count_before
+ 1] = "-d";
1435 /* Don't actually discard this arg. */
1436 skip_args
= count_before
;
1440 /* argmatch must not be used after here,
1441 except when bulding temacs
1442 because the -d argument has not been skipped in skip_args. */
1445 /* Call early 'cause init_environment needs it. */
1447 /* Set defaults for several environment variables. */
1449 init_environment (argc
, argv
, skip_args
);
1456 /* Initialize environment from registry settings. */
1457 init_environment (argv
);
1458 init_ntproc (); /* must precede init_editfns. */
1463 init_mac_osx_environment ();
1466 /* egetenv is a pretty low-level facility, which may get called in
1467 many circumstances; it seems flimsy to put off initializing it
1468 until calling init_callproc. */
1469 set_process_environment ();
1470 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1471 if this is not done. Do it after set_process_environment so that we
1472 don't pollute Vprocess_environment. */
1473 /* Setting LANG here will defeat the startup locale processing... */
1478 init_buffer (); /* Init default directory of main buffer. */
1480 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1481 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1485 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1486 Lisp_Object old_log_max
;
1487 old_log_max
= Vmessage_log_max
;
1488 XSETFASTINT (Vmessage_log_max
, 0);
1489 message_dolog ("", 0, 1, 0);
1490 Vmessage_log_max
= old_log_max
;
1493 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1496 /* Intern the names of all standard functions and variables;
1497 define standard keys. */
1501 /* The basic levels of Lisp must come first. */
1502 /* And data must come first of all
1503 for the sake of symbols like error-message. */
1505 /* Called before init_window_once for Mac OS Classic. */
1514 syms_of_floatfns ();
1518 syms_of_bytecode ();
1520 syms_of_casefiddle ();
1522 syms_of_callproc ();
1523 syms_of_category ();
1525 /* Called before init_window_once for Mac OS Classic. */
1528 syms_of_character ();
1531 #ifndef NO_DIR_LIBRARY
1533 #endif /* not NO_DIR_LIBRARY */
1539 syms_of_coding (); /* This should be after syms_of_fileio. */
1540 #ifdef CLASH_DETECTION
1541 syms_of_filelock ();
1542 #endif /* CLASH_DETECTION */
1551 /* Called before init_window_once for Mac OS Classic. */
1562 /* Called before init_window_once for Mac OS Classic. */
1563 syms_of_textprop ();
1565 syms_of_composite ();
1571 #endif /* WINDOWSNT */
1574 #ifdef HAVE_WINDOW_SYSTEM
1577 #endif /* HAVE_WINDOW_SYSTEM */
1578 #ifdef HAVE_X_WINDOWS
1588 #endif /* HAVE_X_WINDOWS */
1593 /* Called before init_window_once for Mac OS Classic. */
1602 syms_of_w32select ();
1605 #endif /* HAVE_NTGUI */
1612 #endif /* HAVE_CARBON */
1622 keys_of_casefiddle ();
1625 keys_of_keyboard ();
1633 Initialization that must be done even if the global variable
1634 initialized is non zero
1637 globals_of_w32fns ();
1638 globals_of_w32menu ();
1639 #endif /* end #ifdef HAVE_NTGUI */
1644 if (!noninteractive
)
1647 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1649 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1652 /* Called before init_window_once for Mac OS Classic. */
1653 init_keyboard (); /* This too must precede init_sys_modes. */
1656 init_vmsproc (); /* And this too. */
1658 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1661 #ifdef HAVE_WINDOW_SYSTEM
1664 #endif /* HAVE_WINDOW_SYSTEM */
1680 /* Handle -l loadup, args passed by Makefile. */
1681 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1682 Vtop_level
= Fcons (intern ("load"),
1683 Fcons (build_string (file
), Qnil
));
1684 /* Unless next switch is -nl, load "loadup.el" first thing. */
1686 Vtop_level
= Fcons (intern ("load"),
1687 Fcons (build_string ("loadup.el"), Qnil
));
1694 /* If the execution TZ happens to be the same as the dump TZ,
1695 change it to some other value and then change it back,
1696 to force the underlying implementation to reload the TZ info.
1697 This is needed on implementations that load TZ info from files,
1698 since the TZ file contents may differ between dump and execution. */
1699 char *tz
= getenv ("TZ");
1700 if (tz
&& !strcmp (tz
, dump_tz
))
1710 /* Set up for profiling. This is known to work on FreeBSD and
1711 GNU/Linux. It might work on some other systems too. Give it a
1712 try and tell us if it works on your system. To compile for
1713 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1714 #if defined (__FreeBSD__) || defined (__linux)
1718 extern void _mcleanup ();
1720 extern void safe_bcopy ();
1721 extern void dump_opcode_frequencies ();
1724 /* This uses safe_bcopy because that function comes first in the
1725 Emacs executable. It might be better to use something that
1726 gives the start of the text segment, but start_of_text is not
1727 defined on all systems now. */
1728 monstartup (safe_bcopy
, &etext
);
1737 #ifdef LOCALTIME_CACHE
1738 /* Some versions of localtime have a bug. They cache the value of the time
1739 zone rather than looking it up every time. Since localtime() is
1740 called to bolt the undumping time into the undumped emacs, this
1741 results in localtime ignoring the TZ environment variable.
1742 This flushes the new TZ value into localtime. */
1744 #endif /* defined (LOCALTIME_CACHE) */
1746 /* Enter editor command loop. This never returns. */
1752 /* Sort the args so we can find the most important ones
1753 at the beginning of argv. */
1755 /* First, here's a table of all the standard options. */
1757 struct standard_args
1765 struct standard_args standard_args
[] =
1767 { "-version", "--version", 150, 0 },
1769 { "-nl", "--no-shared-memory", 140, 0 },
1772 { "-map", "--map-data", 130, 0 },
1774 { "-t", "--terminal", 120, 1 },
1775 { "-nw", "--no-window-system", 110, 0 },
1776 { "-nw", "--no-windows", 110, 0 },
1777 { "-batch", "--batch", 100, 0 },
1778 { "-script", "--script", 100, 1 },
1779 { "-help", "--help", 90, 0 },
1780 { "-no-unibyte", "--no-unibyte", 83, 0 },
1781 { "-multibyte", "--multibyte", 82, 0 },
1782 { "-unibyte", "--unibyte", 81, 0 },
1783 { "-no-multibyte", "--no-multibyte", 80, 0 },
1784 { "-nl", "--no-loadup", 70, 0 },
1785 /* -d must come last before the options handled in startup.el. */
1786 { "-d", "--display", 60, 1 },
1787 { "-display", 0, 60, 1 },
1788 /* Now for the options handled in startup.el. */
1789 { "-q", "--no-init-file", 50, 0 },
1790 { "-no-init-file", 0, 50, 0 },
1791 { "-no-site-file", "--no-site-file", 40, 0 },
1792 { "-no-splash", "--no-splash", 40, 0 },
1793 { "-u", "--user", 30, 1 },
1794 { "-user", 0, 30, 1 },
1795 { "-debug-init", "--debug-init", 20, 0 },
1796 { "-i", "--icon-type", 15, 0 },
1797 { "-itype", 0, 15, 0 },
1798 { "-iconic", "--iconic", 15, 0 },
1799 { "-bg", "--background-color", 10, 1 },
1800 { "-background", 0, 10, 1 },
1801 { "-fg", "--foreground-color", 10, 1 },
1802 { "-foreground", 0, 10, 1 },
1803 { "-bd", "--border-color", 10, 1 },
1804 { "-bw", "--border-width", 10, 1 },
1805 { "-ib", "--internal-border", 10, 1 },
1806 { "-ms", "--mouse-color", 10, 1 },
1807 { "-cr", "--cursor-color", 10, 1 },
1808 { "-fn", "--font", 10, 1 },
1809 { "-font", 0, 10, 1 },
1810 { "-fs", "--fullscreen", 10, 0 },
1811 { "-fw", "--fullwidth", 10, 0 },
1812 { "-fh", "--fullheight", 10, 0 },
1813 { "-g", "--geometry", 10, 1 },
1814 { "-geometry", 0, 10, 1 },
1815 { "-T", "--title", 10, 1 },
1816 { "-title", 0, 10, 1 },
1817 { "-name", "--name", 10, 1 },
1818 { "-xrm", "--xrm", 10, 1 },
1819 { "-r", "--reverse-video", 5, 0 },
1821 { "-reverse", 0, 5, 0 },
1822 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1823 { "-vb", "--vertical-scroll-bars", 5, 0 },
1824 { "-color", "--color", 5, 0},
1825 /* These have the same priority as ordinary file name args,
1826 so they are not reordered with respect to those. */
1827 { "-L", "--directory", 0, 1 },
1828 { "-directory", 0, 0, 1 },
1829 { "-l", "--load", 0, 1 },
1830 { "-load", 0, 0, 1 },
1831 { "-f", "--funcall", 0, 1 },
1832 { "-funcall", 0, 0, 1 },
1833 { "-eval", "--eval", 0, 1 },
1834 { "-execute", "--execute", 0, 1 },
1835 { "-find-file", "--find-file", 0, 1 },
1836 { "-visit", "--visit", 0, 1 },
1837 { "-file", "--file", 0, 1 },
1838 { "-insert", "--insert", 0, 1 },
1839 /* This should be processed after ordinary file name args and the like. */
1840 { "-kill", "--kill", -10, 0 },
1843 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1844 so that the highest priority ones come first.
1845 Do not change the order of elements of equal priority.
1846 If an option takes an argument, keep it and its argument together.
1848 If an option that takes no argument appears more
1849 than once, eliminate all but one copy of it. */
1852 sort_args (argc
, argv
)
1856 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1857 /* For each element of argv,
1858 the corresponding element of options is:
1859 0 for an option that takes no arguments,
1860 1 for an option that takes one argument, etc.
1861 -1 for an ordinary non-option argument. */
1862 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1863 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1865 int incoming_used
= 1;
1869 /* Categorize all the options,
1870 and figure out which argv elts are option arguments. */
1871 for (from
= 1; from
< argc
; from
++)
1875 if (argv
[from
][0] == '-')
1880 /* If we have found "--", don't consider
1881 any more arguments as options. */
1882 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1884 /* Leave the "--", and everything following it, at the end. */
1885 for (; from
< argc
; from
++)
1887 priority
[from
] = -100;
1893 /* Look for a match with a known old-fashioned option. */
1894 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1895 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1897 options
[from
] = standard_args
[i
].nargs
;
1898 priority
[from
] = standard_args
[i
].priority
;
1899 if (from
+ standard_args
[i
].nargs
>= argc
)
1900 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1901 from
+= standard_args
[i
].nargs
;
1905 /* Look for a match with a known long option.
1906 MATCH is -1 if no match so far, -2 if two or more matches so far,
1907 >= 0 (the table index of the match) if just one match so far. */
1908 if (argv
[from
][1] == '-')
1911 thislen
= strlen (argv
[from
]);
1912 equals
= index (argv
[from
], '=');
1914 thislen
= equals
- argv
[from
];
1917 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1918 if (standard_args
[i
].longname
1919 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1928 /* If we found exactly one match, use that. */
1931 options
[from
] = standard_args
[match
].nargs
;
1932 priority
[from
] = standard_args
[match
].priority
;
1933 /* If --OPTION=VALUE syntax is used,
1934 this option uses just one argv element. */
1937 if (from
+ options
[from
] >= argc
)
1938 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1939 from
+= options
[from
];
1946 /* Copy the arguments, in order of decreasing priority, to NEW. */
1948 while (incoming_used
< argc
)
1951 int best_priority
= -9999;
1953 /* Find the highest priority remaining option.
1954 If several have equal priority, take the first of them. */
1955 for (from
= 1; from
< argc
; from
++)
1957 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1959 best_priority
= priority
[from
];
1962 /* Skip option arguments--they are tied to the options. */
1963 if (options
[from
] > 0)
1964 from
+= options
[from
];
1970 /* Copy the highest priority remaining option, with its args, to NEW.
1971 Unless it is a duplicate of the previous one. */
1972 if (! (options
[best
] == 0
1973 && ! strcmp (new[to
- 1], argv
[best
])))
1975 new[to
++] = argv
[best
];
1976 for (i
= 0; i
< options
[best
]; i
++)
1977 new[to
++] = argv
[best
+ i
+ 1];
1980 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1982 /* Clear out this option in ARGV. */
1984 for (i
= 0; i
< options
[best
]; i
++)
1985 argv
[best
+ i
+ 1] = 0;
1988 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1992 bcopy (new, argv
, sizeof (char *) * argc
);
1999 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
2000 doc
: /* Exit the Emacs job and kill it.
2001 If ARG is an integer, return ARG as the exit program code.
2002 If ARG is a string, stuff it as keyboard input.
2004 The value of `kill-emacs-hook', if not void,
2005 is a list of functions (of no args),
2006 all of which are called before Emacs is actually killed. */)
2010 struct gcpro gcpro1
;
2017 if (!NILP (Vrun_hooks
) && !noninteractive
)
2018 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
2022 /* Is it really necessary to do this deassign
2023 when we are going to exit anyway? */
2028 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2030 /* If we have an auto-save list file,
2031 kill it because we are exiting Emacs deliberately (not crashing).
2032 Do it after shut_down_emacs, which does an auto-save. */
2033 if (STRINGP (Vauto_save_list_file_name
))
2034 unlink (SDATA (Vauto_save_list_file_name
));
2036 exit (INTEGERP (arg
) ? XINT (arg
)
2047 /* Perform an orderly shutdown of Emacs. Autosave any modified
2048 buffers, kill any child processes, clean up the terminal modes (if
2049 we're in the foreground), and other stuff like that. Don't perform
2050 any redisplay; this may be called when Emacs is shutting down in
2051 the background, or after its X connection has died.
2053 If SIG is a signal number, print a message for it.
2055 This is called by fatal signal handlers, X protocol error handlers,
2059 shut_down_emacs (sig
, no_x
, stuff
)
2063 /* Prevent running of hooks from now on. */
2066 /* Don't update display from now on. */
2067 Vinhibit_redisplay
= Qt
;
2069 /* If we are controlling the terminal, reset terminal modes. */
2070 #ifdef EMACS_HAVE_TTY_PGRP
2072 int pgrp
= EMACS_GETPGRP (0);
2075 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2080 if (sig
&& sig
!= SIGTERM
)
2081 fprintf (stderr
, "Fatal error (%d)", sig
);
2089 stuff_buffered_input (stuff
);
2091 kill_buffer_processes (Qnil
);
2092 Fdo_auto_save (Qt
, Qnil
);
2094 #ifdef CLASH_DETECTION
2095 unlock_all_files ();
2099 kill_vms_processes ();
2102 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2103 #ifdef HAVE_X_WINDOWS
2104 /* It's not safe to call intern here. Maybe we are crashing. */
2105 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2106 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2107 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2109 Fx_close_current_connection ();
2110 #endif /* HAVE_X_WINDOWS */
2114 /* There is a tendency for a SIGIO signal to arrive within exit,
2115 and cause a SIGHUP because the input descriptor is already closed. */
2117 signal (SIGIO
, SIG_IGN
);
2124 /* Do this only if terminating normally, we want glyph matrices
2125 etc. in a core dump. */
2126 if (sig
== 0 || sig
== SIGTERM
)
2128 check_glyph_memory ();
2129 check_message_stack ();
2143 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2144 doc
: /* Dump current state of Emacs into data file FILENAME.
2145 This function exists on systems that use HAVE_SHM. */)
2147 Lisp_Object filename
;
2149 extern char my_edata
[];
2153 CHECK_STRING (filename
);
2154 filename
= Fexpand_file_name (filename
, Qnil
);
2157 Vpurify_flag
= Qnil
;
2160 /* Tell malloc where start of impure now is. */
2161 /* Also arrange for warnings when nearly out of space. */
2162 #ifndef SYSTEM_MALLOC
2163 memory_warnings (my_edata
, malloc_warning
);
2165 map_out_data (SDATA (filename
));
2172 #else /* not HAVE_SHM */
2174 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2175 doc
: /* Dump current state of Emacs into executable file FILENAME.
2176 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2177 This is used in the file `loadup.el' when building Emacs.
2179 You must run Emacs in batch mode in order to dump it. */)
2181 Lisp_Object filename
, symfile
;
2183 extern char my_edata
[];
2186 int count
= SPECPDL_INDEX ();
2190 if (! noninteractive
)
2191 error ("Dumping Emacs works only in batch mode");
2193 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2195 fprintf (stderr
, "**************************************************\n");
2196 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2197 fprintf (stderr
, "heap. This usually means that exec-shield or\n");
2198 fprintf (stderr
, "something similar is in effect. The dump may fail\n");
2199 fprintf (stderr
, "because of this. See the section about exec-shield\n");
2200 fprintf (stderr
, "in etc/PROBLEMS for more information.\n");
2201 fprintf (stderr
, "**************************************************\n");
2204 /* Bind `command-line-processed' to nil before dumping,
2205 so that the dumped Emacs will process its command line
2206 and set up to work with X windows if appropriate. */
2207 symbol
= intern ("command-line-processed");
2208 specbind (symbol
, Qnil
);
2210 CHECK_STRING (filename
);
2211 filename
= Fexpand_file_name (filename
, Qnil
);
2212 if (!NILP (symfile
))
2214 CHECK_STRING (symfile
);
2215 if (SCHARS (symfile
))
2216 symfile
= Fexpand_file_name (symfile
, Qnil
);
2220 Vpurify_flag
= Qnil
;
2223 set_time_zone_rule (dump_tz
);
2224 #ifndef LOCALTIME_CACHE
2225 /* Force a tz reload, since set_time_zone_rule doesn't. */
2232 mapout_data (SDATA (filename
));
2234 /* Tell malloc where start of impure now is. */
2235 /* Also arrange for warnings when nearly out of space. */
2236 #ifndef SYSTEM_MALLOC
2238 /* On Windows, this was done before dumping, and that once suffices.
2239 Meanwhile, my_edata is not valid on Windows. */
2240 memory_warnings (my_edata
, malloc_warning
);
2241 #endif /* not WINDOWSNT */
2243 #ifdef DOUG_LEA_MALLOC
2244 malloc_state_ptr
= malloc_get_state ();
2247 #ifdef USE_MMAP_FOR_BUFFERS
2250 unexec (SDATA (filename
),
2251 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2252 #ifdef USE_MMAP_FOR_BUFFERS
2255 #ifdef DOUG_LEA_MALLOC
2256 free (malloc_state_ptr
);
2258 #endif /* not VMS */
2262 return unbind_to (count
, Qnil
);
2265 #endif /* not HAVE_SHM */
2267 #endif /* not CANNOT_DUMP */
2270 /* Recover from setlocale (LC_ALL, ""). */
2274 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2275 so that numbers are read and printed properly for Emacs Lisp. */
2276 setlocale (LC_NUMERIC
, "C");
2279 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2282 synchronize_locale (category
, plocale
, desired_locale
)
2284 Lisp_Object
*plocale
;
2285 Lisp_Object desired_locale
;
2287 if (! EQ (*plocale
, desired_locale
))
2289 *plocale
= desired_locale
;
2290 setlocale (category
, (STRINGP (desired_locale
)
2291 ? (char *)(SDATA (desired_locale
))
2296 /* Set system time locale to match Vsystem_time_locale, if possible. */
2298 synchronize_system_time_locale ()
2300 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2301 Vsystem_time_locale
);
2304 /* Set system messages locale to match Vsystem_messages_locale, if
2307 synchronize_system_messages_locale ()
2310 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2311 Vsystem_messages_locale
);
2314 #endif /* HAVE_SETLOCALE */
2321 decode_env_path (evarname
, defalt
)
2322 char *evarname
, *defalt
;
2324 register char *path
, *p
;
2325 Lisp_Object lpath
, element
, tem
;
2327 /* It's okay to use getenv here, because this function is only used
2328 to initialize variables when Emacs starts up, and isn't called
2331 path
= (char *) getenv (evarname
);
2337 /* Ensure values from the environment use the proper directory separator. */
2340 p
= alloca (strlen (path
) + 1);
2344 if ('/' == DIRECTORY_SEP
)
2345 dostounix_filename (path
);
2347 unixtodos_filename (path
);
2353 p
= index (path
, SEPCHAR
);
2354 if (!p
) p
= path
+ strlen (path
);
2355 element
= (p
- path
? make_string (path
, p
- path
)
2356 : build_string ("."));
2358 /* Add /: to the front of the name
2359 if it would otherwise be treated as magic. */
2360 tem
= Ffind_file_name_handler (element
, Qt
);
2362 /* However, if the handler says "I'm safe",
2363 don't bother adding /:. */
2367 prop
= Fget (tem
, intern ("safe-magic"));
2373 element
= concat2 (build_string ("/:"), element
);
2375 lpath
= Fcons (element
, lpath
);
2381 return Fnreverse (lpath
);
2387 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2388 staticpro (&Qfile_name_handler_alist
);
2392 defsubr (&Sdump_emacs_data
);
2394 defsubr (&Sdump_emacs
);
2398 defsubr (&Skill_emacs
);
2400 defsubr (&Sinvocation_name
);
2401 defsubr (&Sinvocation_directory
);
2403 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2404 doc
: /* Args passed by shell to Emacs, as a list of strings.
2405 Many arguments are deleted from the list as they are processed. */);
2407 DEFVAR_LISP ("system-type", &Vsystem_type
,
2408 doc
: /* Value is symbol indicating type of operating system you are using. */);
2409 Vsystem_type
= intern (SYSTEM_TYPE
);
2411 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2412 doc
: /* Value is string indicating configuration Emacs was built for.
2413 On MS-Windows, the value reflects the OS flavor and version on which
2414 Emacs is running. */);
2415 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2417 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2418 doc
: /* String containing the configuration options Emacs was built with. */);
2419 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2421 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2422 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2424 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2425 doc
: /* Hook to be run when kill-emacs is called.
2426 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2427 in other similar situations), functions placed on this hook should not
2428 expect to be able to interact with the user. To ask for confirmation,
2429 see `kill-emacs-query-functions' instead.
2431 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2432 Vkill_emacs_hook
= Qnil
;
2434 empty_string
= build_string ("");
2435 staticpro (&empty_string
);
2437 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2438 doc
: /* Priority for Emacs to run at.
2439 This value is effective only if set before Emacs is dumped,
2440 and only if the Emacs executable is installed with setuid to permit
2441 it to change priority. (Emacs sets its uid back to the real uid.)
2442 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2443 before you compile Emacs, to enable the code for this feature. */);
2446 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2447 doc
: /* The directory separator in search paths, as a string. */);
2450 Vpath_separator
= make_string (&c
, 1);
2453 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2454 doc
: /* The program name that was used to run Emacs.
2455 Any directory names are omitted. */);
2457 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2458 doc
: /* The directory in which the Emacs executable was found, to run it.
2459 The value is nil if that directory's name is not known. */);
2461 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2462 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2463 This is non-nil when we can't find those directories in their standard
2464 installed locations, but we can find them
2465 near where the Emacs executable was found. */);
2466 Vinstallation_directory
= Qnil
;
2468 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2469 doc
: /* System locale for messages. */);
2470 Vsystem_messages_locale
= Qnil
;
2472 DEFVAR_LISP ("previous-system-messages-locale",
2473 &Vprevious_system_messages_locale
,
2474 doc
: /* Most recently used system locale for messages. */);
2475 Vprevious_system_messages_locale
= Qnil
;
2477 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2478 doc
: /* System locale for time. */);
2479 Vsystem_time_locale
= Qnil
;
2481 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2482 doc
: /* Most recently used system locale for time. */);
2483 Vprevious_system_time_locale
= Qnil
;
2486 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2487 (do not change this comment) */