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_charset_once ();
1258 init_coding_once ();
1259 init_syntax_once (); /* Create standard syntax table. */
1260 init_category_once (); /* Create standard category table. */
1261 /* Must be done before init_buffer. */
1262 init_casetab_once ();
1263 init_buffer_once (); /* Create buffer table and some buffers. */
1264 init_minibuf_once (); /* Create list of minibuffers. */
1265 /* Must precede init_window_once. */
1267 /* Call syms_of_xfaces before init_window_once because that
1268 function creates Vterminal_frame. Termcap frames now use
1269 faces, and the face implementation uses some symbols as
1272 /* Call syms_of_keyboard before init_window_once because
1273 keyboard sets up symbols that include some face names that
1274 the X support will want to use. This can happen when
1275 CANNOT_DUMP is defined. */
1276 syms_of_keyboard ();
1279 /* init_window_once calls make_terminal_frame which on Mac OS
1280 creates a full-fledge output_mac type frame. This does not
1281 work correctly before syms_of_textprop, syms_of_macfns,
1282 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1283 syms_of_frame, mac_initialize, and init_keyboard have already
1285 syms_of_textprop ();
1299 init_window_once (); /* Init the window system. */
1300 init_fileio_once (); /* Must precede any path manipulation. */
1301 #ifdef HAVE_WINDOW_SYSTEM
1302 init_fringe_once (); /* Swap bitmaps if necessary. */
1303 #endif /* HAVE_WINDOW_SYSTEM */
1308 if (do_initial_setlocale
)
1311 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1312 Vsystem_time_locale
= Vprevious_system_time_locale
;
1317 #ifdef CLASH_DETECTION
1321 running_asynch_code
= 0;
1323 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1324 but not while dumping. */
1327 int inhibit_unibyte
= 0;
1329 /* --multibyte overrides EMACS_UNIBYTE. */
1330 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1331 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1332 /* Ignore EMACS_UNIBYTE before dumping. */
1333 || (!initialized
&& noninteractive
))
1334 inhibit_unibyte
= 1;
1336 /* --unibyte requests that we set up to do everything with single-byte
1337 buffers and strings. We need to handle this before calling
1338 init_lread, init_editfns and other places that generate Lisp strings
1339 from text in the environment. */
1340 /* Actually this shouldn't be needed as of 20.4 in a generally
1341 unibyte environment. As handa says, environment values
1342 aren't now decoded; also existing buffers are now made
1343 unibyte during startup if .emacs sets unibyte. Tested with
1344 8-bit data in environment variables and /etc/passwd, setting
1345 unibyte and Latin-1 in .emacs. -- Dave Love */
1346 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1347 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1348 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1350 Lisp_Object old_log_max
;
1351 Lisp_Object symbol
, tail
;
1353 symbol
= intern ("default-enable-multibyte-characters");
1354 Fset (symbol
, Qnil
);
1358 /* Erase pre-dump messages in *Messages* now so no abort. */
1359 old_log_max
= Vmessage_log_max
;
1360 XSETFASTINT (Vmessage_log_max
, 0);
1361 message_dolog ("", 0, 1, 0);
1362 Vmessage_log_max
= old_log_max
;
1365 for (tail
= Vbuffer_alist
; CONSP (tail
);
1370 buffer
= Fcdr (XCAR (tail
));
1371 /* Verify that all buffers are empty now, as they
1373 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1375 /* It is safe to do this crudely in an empty buffer. */
1376 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1382 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1385 #ifdef HAVE_X_WINDOWS
1386 /* Stupid kludge to catch command-line display spec. We can't
1387 handle this argument entirely in window system dependent code
1388 because we don't even know which window system dependent code
1389 to run until we've recognized this argument. */
1391 char *displayname
= 0;
1392 int count_before
= skip_args
;
1394 /* Skip any number of -d options, but only use the last one. */
1397 int count_before_this
= skip_args
;
1399 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1401 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1406 count_before
= count_before_this
;
1409 /* If we have the form --display=NAME,
1410 convert it into -d name.
1411 This requires inserting a new element into argv. */
1412 if (displayname
!= 0 && skip_args
- count_before
== 1)
1414 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1417 for (j
= 0; j
< count_before
+ 1; j
++)
1419 new[count_before
+ 1] = "-d";
1420 new[count_before
+ 2] = displayname
;
1421 for (j
= count_before
+ 2; j
<argc
; j
++)
1422 new[j
+ 1] = argv
[j
];
1426 /* Change --display to -d, when its arg is separate. */
1427 else if (displayname
!= 0 && skip_args
> count_before
1428 && argv
[count_before
+ 1][1] == '-')
1429 argv
[count_before
+ 1] = "-d";
1431 /* Don't actually discard this arg. */
1432 skip_args
= count_before
;
1436 /* argmatch must not be used after here,
1437 except when bulding temacs
1438 because the -d argument has not been skipped in skip_args. */
1441 /* Call early 'cause init_environment needs it. */
1443 /* Set defaults for several environment variables. */
1445 init_environment (argc
, argv
, skip_args
);
1452 /* Initialize environment from registry settings. */
1453 init_environment (argv
);
1454 init_ntproc (); /* must precede init_editfns. */
1459 init_mac_osx_environment ();
1462 /* egetenv is a pretty low-level facility, which may get called in
1463 many circumstances; it seems flimsy to put off initializing it
1464 until calling init_callproc. */
1465 set_process_environment ();
1466 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1467 if this is not done. Do it after set_process_environment so that we
1468 don't pollute Vprocess_environment. */
1469 /* Setting LANG here will defeat the startup locale processing... */
1474 init_buffer (); /* Init default directory of main buffer. */
1476 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1477 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1481 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1482 Lisp_Object old_log_max
;
1483 old_log_max
= Vmessage_log_max
;
1484 XSETFASTINT (Vmessage_log_max
, 0);
1485 message_dolog ("", 0, 1, 0);
1486 Vmessage_log_max
= old_log_max
;
1489 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1492 /* Intern the names of all standard functions and variables;
1493 define standard keys. */
1497 /* The basic levels of Lisp must come first. */
1498 /* And data must come first of all
1499 for the sake of symbols like error-message. */
1501 /* Called before init_window_once for Mac OS Classic. */
1509 syms_of_floatfns ();
1513 syms_of_bytecode ();
1515 syms_of_casefiddle ();
1517 syms_of_callproc ();
1518 syms_of_category ();
1520 /* Called before init_window_once for Mac OS Classic. */
1525 #ifndef NO_DIR_LIBRARY
1527 #endif /* not NO_DIR_LIBRARY */
1533 syms_of_coding (); /* This should be after syms_of_fileio. */
1534 #ifdef CLASH_DETECTION
1535 syms_of_filelock ();
1536 #endif /* CLASH_DETECTION */
1545 /* Called before init_window_once for Mac OS Classic. */
1556 /* Called before init_window_once for Mac OS Classic. */
1557 syms_of_textprop ();
1559 syms_of_composite ();
1565 #endif /* WINDOWSNT */
1568 #ifdef HAVE_WINDOW_SYSTEM
1571 #endif /* HAVE_WINDOW_SYSTEM */
1572 #ifdef HAVE_X_WINDOWS
1582 #endif /* HAVE_X_WINDOWS */
1587 /* Called before init_window_once for Mac OS Classic. */
1596 syms_of_w32select ();
1599 #endif /* HAVE_NTGUI */
1606 #endif /* HAVE_CARBON */
1616 keys_of_casefiddle ();
1619 keys_of_keyboard ();
1627 Initialization that must be done even if the global variable
1628 initialized is non zero
1631 globals_of_w32fns ();
1632 globals_of_w32menu ();
1633 #endif /* end #ifdef HAVE_NTGUI */
1636 if (!noninteractive
)
1639 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1641 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1644 /* Called before init_window_once for Mac OS Classic. */
1645 init_keyboard (); /* This too must precede init_sys_modes. */
1648 init_vmsproc (); /* And this too. */
1650 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1653 #ifdef HAVE_WINDOW_SYSTEM
1656 #endif /* HAVE_WINDOW_SYSTEM */
1672 /* Handle -l loadup, args passed by Makefile. */
1673 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1674 Vtop_level
= Fcons (intern ("load"),
1675 Fcons (build_string (file
), Qnil
));
1676 /* Unless next switch is -nl, load "loadup.el" first thing. */
1678 Vtop_level
= Fcons (intern ("load"),
1679 Fcons (build_string ("loadup.el"), Qnil
));
1686 /* If the execution TZ happens to be the same as the dump TZ,
1687 change it to some other value and then change it back,
1688 to force the underlying implementation to reload the TZ info.
1689 This is needed on implementations that load TZ info from files,
1690 since the TZ file contents may differ between dump and execution. */
1691 char *tz
= getenv ("TZ");
1692 if (tz
&& !strcmp (tz
, dump_tz
))
1702 /* Set up for profiling. This is known to work on FreeBSD and
1703 GNU/Linux. It might work on some other systems too. Give it a
1704 try and tell us if it works on your system. To compile for
1705 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1706 #if defined (__FreeBSD__) || defined (__linux)
1710 extern void _mcleanup ();
1712 extern void safe_bcopy ();
1713 extern void dump_opcode_frequencies ();
1716 /* This uses safe_bcopy because that function comes first in the
1717 Emacs executable. It might be better to use something that
1718 gives the start of the text segment, but start_of_text is not
1719 defined on all systems now. */
1720 monstartup (safe_bcopy
, &etext
);
1729 #ifdef LOCALTIME_CACHE
1730 /* Some versions of localtime have a bug. They cache the value of the time
1731 zone rather than looking it up every time. Since localtime() is
1732 called to bolt the undumping time into the undumped emacs, this
1733 results in localtime ignoring the TZ environment variable.
1734 This flushes the new TZ value into localtime. */
1736 #endif /* defined (LOCALTIME_CACHE) */
1738 /* Enter editor command loop. This never returns. */
1744 /* Sort the args so we can find the most important ones
1745 at the beginning of argv. */
1747 /* First, here's a table of all the standard options. */
1749 struct standard_args
1757 struct standard_args standard_args
[] =
1759 { "-version", "--version", 150, 0 },
1761 { "-nl", "--no-shared-memory", 140, 0 },
1764 { "-map", "--map-data", 130, 0 },
1766 { "-t", "--terminal", 120, 1 },
1767 { "-nw", "--no-window-system", 110, 0 },
1768 { "-nw", "--no-windows", 110, 0 },
1769 { "-batch", "--batch", 100, 0 },
1770 { "-script", "--script", 100, 1 },
1771 { "-help", "--help", 90, 0 },
1772 { "-no-unibyte", "--no-unibyte", 83, 0 },
1773 { "-multibyte", "--multibyte", 82, 0 },
1774 { "-unibyte", "--unibyte", 81, 0 },
1775 { "-no-multibyte", "--no-multibyte", 80, 0 },
1776 { "-nl", "--no-loadup", 70, 0 },
1777 /* -d must come last before the options handled in startup.el. */
1778 { "-d", "--display", 60, 1 },
1779 { "-display", 0, 60, 1 },
1780 /* Now for the options handled in startup.el. */
1781 { "-q", "--no-init-file", 50, 0 },
1782 { "-no-init-file", 0, 50, 0 },
1783 { "-no-site-file", "--no-site-file", 40, 0 },
1784 { "-no-splash", "--no-splash", 40, 0 },
1785 { "-u", "--user", 30, 1 },
1786 { "-user", 0, 30, 1 },
1787 { "-debug-init", "--debug-init", 20, 0 },
1788 { "-i", "--icon-type", 15, 0 },
1789 { "-itype", 0, 15, 0 },
1790 { "-iconic", "--iconic", 15, 0 },
1791 { "-bg", "--background-color", 10, 1 },
1792 { "-background", 0, 10, 1 },
1793 { "-fg", "--foreground-color", 10, 1 },
1794 { "-foreground", 0, 10, 1 },
1795 { "-bd", "--border-color", 10, 1 },
1796 { "-bw", "--border-width", 10, 1 },
1797 { "-ib", "--internal-border", 10, 1 },
1798 { "-ms", "--mouse-color", 10, 1 },
1799 { "-cr", "--cursor-color", 10, 1 },
1800 { "-fn", "--font", 10, 1 },
1801 { "-font", 0, 10, 1 },
1802 { "-fs", "--fullscreen", 10, 0 },
1803 { "-fw", "--fullwidth", 10, 0 },
1804 { "-fh", "--fullheight", 10, 0 },
1805 { "-g", "--geometry", 10, 1 },
1806 { "-geometry", 0, 10, 1 },
1807 { "-T", "--title", 10, 1 },
1808 { "-title", 0, 10, 1 },
1809 { "-name", "--name", 10, 1 },
1810 { "-xrm", "--xrm", 10, 1 },
1811 { "-r", "--reverse-video", 5, 0 },
1813 { "-reverse", 0, 5, 0 },
1814 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1815 { "-vb", "--vertical-scroll-bars", 5, 0 },
1816 { "-color", "--color", 5, 0},
1817 /* These have the same priority as ordinary file name args,
1818 so they are not reordered with respect to those. */
1819 { "-L", "--directory", 0, 1 },
1820 { "-directory", 0, 0, 1 },
1821 { "-l", "--load", 0, 1 },
1822 { "-load", 0, 0, 1 },
1823 { "-f", "--funcall", 0, 1 },
1824 { "-funcall", 0, 0, 1 },
1825 { "-eval", "--eval", 0, 1 },
1826 { "-execute", "--execute", 0, 1 },
1827 { "-find-file", "--find-file", 0, 1 },
1828 { "-visit", "--visit", 0, 1 },
1829 { "-file", "--file", 0, 1 },
1830 { "-insert", "--insert", 0, 1 },
1831 /* This should be processed after ordinary file name args and the like. */
1832 { "-kill", "--kill", -10, 0 },
1835 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1836 so that the highest priority ones come first.
1837 Do not change the order of elements of equal priority.
1838 If an option takes an argument, keep it and its argument together.
1840 If an option that takes no argument appears more
1841 than once, eliminate all but one copy of it. */
1844 sort_args (argc
, argv
)
1848 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1849 /* For each element of argv,
1850 the corresponding element of options is:
1851 0 for an option that takes no arguments,
1852 1 for an option that takes one argument, etc.
1853 -1 for an ordinary non-option argument. */
1854 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1855 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1857 int incoming_used
= 1;
1861 /* Categorize all the options,
1862 and figure out which argv elts are option arguments. */
1863 for (from
= 1; from
< argc
; from
++)
1867 if (argv
[from
][0] == '-')
1872 /* If we have found "--", don't consider
1873 any more arguments as options. */
1874 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1876 /* Leave the "--", and everything following it, at the end. */
1877 for (; from
< argc
; from
++)
1879 priority
[from
] = -100;
1885 /* Look for a match with a known old-fashioned option. */
1886 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1887 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1889 options
[from
] = standard_args
[i
].nargs
;
1890 priority
[from
] = standard_args
[i
].priority
;
1891 if (from
+ standard_args
[i
].nargs
>= argc
)
1892 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1893 from
+= standard_args
[i
].nargs
;
1897 /* Look for a match with a known long option.
1898 MATCH is -1 if no match so far, -2 if two or more matches so far,
1899 >= 0 (the table index of the match) if just one match so far. */
1900 if (argv
[from
][1] == '-')
1903 thislen
= strlen (argv
[from
]);
1904 equals
= index (argv
[from
], '=');
1906 thislen
= equals
- argv
[from
];
1909 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1910 if (standard_args
[i
].longname
1911 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1920 /* If we found exactly one match, use that. */
1923 options
[from
] = standard_args
[match
].nargs
;
1924 priority
[from
] = standard_args
[match
].priority
;
1925 /* If --OPTION=VALUE syntax is used,
1926 this option uses just one argv element. */
1929 if (from
+ options
[from
] >= argc
)
1930 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1931 from
+= options
[from
];
1938 /* Copy the arguments, in order of decreasing priority, to NEW. */
1940 while (incoming_used
< argc
)
1943 int best_priority
= -9999;
1945 /* Find the highest priority remaining option.
1946 If several have equal priority, take the first of them. */
1947 for (from
= 1; from
< argc
; from
++)
1949 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1951 best_priority
= priority
[from
];
1954 /* Skip option arguments--they are tied to the options. */
1955 if (options
[from
] > 0)
1956 from
+= options
[from
];
1962 /* Copy the highest priority remaining option, with its args, to NEW.
1963 Unless it is a duplicate of the previous one. */
1964 if (! (options
[best
] == 0
1965 && ! strcmp (new[to
- 1], argv
[best
])))
1967 new[to
++] = argv
[best
];
1968 for (i
= 0; i
< options
[best
]; i
++)
1969 new[to
++] = argv
[best
+ i
+ 1];
1972 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1974 /* Clear out this option in ARGV. */
1976 for (i
= 0; i
< options
[best
]; i
++)
1977 argv
[best
+ i
+ 1] = 0;
1980 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1984 bcopy (new, argv
, sizeof (char *) * argc
);
1991 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1992 doc
: /* Exit the Emacs job and kill it.
1993 If ARG is an integer, return ARG as the exit program code.
1994 If ARG is a string, stuff it as keyboard input.
1996 The value of `kill-emacs-hook', if not void,
1997 is a list of functions (of no args),
1998 all of which are called before Emacs is actually killed. */)
2002 struct gcpro gcpro1
;
2009 if (!NILP (Vrun_hooks
) && !noninteractive
)
2010 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
2014 /* Is it really necessary to do this deassign
2015 when we are going to exit anyway? */
2020 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2022 /* If we have an auto-save list file,
2023 kill it because we are exiting Emacs deliberately (not crashing).
2024 Do it after shut_down_emacs, which does an auto-save. */
2025 if (STRINGP (Vauto_save_list_file_name
))
2026 unlink (SDATA (Vauto_save_list_file_name
));
2028 exit (INTEGERP (arg
) ? XINT (arg
)
2039 /* Perform an orderly shutdown of Emacs. Autosave any modified
2040 buffers, kill any child processes, clean up the terminal modes (if
2041 we're in the foreground), and other stuff like that. Don't perform
2042 any redisplay; this may be called when Emacs is shutting down in
2043 the background, or after its X connection has died.
2045 If SIG is a signal number, print a message for it.
2047 This is called by fatal signal handlers, X protocol error handlers,
2051 shut_down_emacs (sig
, no_x
, stuff
)
2055 /* Prevent running of hooks from now on. */
2058 /* Don't update display from now on. */
2059 Vinhibit_redisplay
= Qt
;
2061 /* If we are controlling the terminal, reset terminal modes. */
2062 #ifdef EMACS_HAVE_TTY_PGRP
2064 int pgrp
= EMACS_GETPGRP (0);
2067 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2072 if (sig
&& sig
!= SIGTERM
)
2073 fprintf (stderr
, "Fatal error (%d)", sig
);
2081 stuff_buffered_input (stuff
);
2083 kill_buffer_processes (Qnil
);
2084 Fdo_auto_save (Qt
, Qnil
);
2086 #ifdef CLASH_DETECTION
2087 unlock_all_files ();
2091 kill_vms_processes ();
2094 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2095 #ifdef HAVE_X_WINDOWS
2096 /* It's not safe to call intern here. Maybe we are crashing. */
2097 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2098 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2099 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2101 Fx_close_current_connection ();
2102 #endif /* HAVE_X_WINDOWS */
2106 /* There is a tendency for a SIGIO signal to arrive within exit,
2107 and cause a SIGHUP because the input descriptor is already closed. */
2109 signal (SIGIO
, SIG_IGN
);
2116 /* Do this only if terminating normally, we want glyph matrices
2117 etc. in a core dump. */
2118 if (sig
== 0 || sig
== SIGTERM
)
2120 check_glyph_memory ();
2121 check_message_stack ();
2135 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2136 doc
: /* Dump current state of Emacs into data file FILENAME.
2137 This function exists on systems that use HAVE_SHM. */)
2139 Lisp_Object filename
;
2141 extern char my_edata
[];
2145 CHECK_STRING (filename
);
2146 filename
= Fexpand_file_name (filename
, Qnil
);
2149 Vpurify_flag
= Qnil
;
2152 /* Tell malloc where start of impure now is. */
2153 /* Also arrange for warnings when nearly out of space. */
2154 #ifndef SYSTEM_MALLOC
2155 memory_warnings (my_edata
, malloc_warning
);
2157 map_out_data (SDATA (filename
));
2164 #else /* not HAVE_SHM */
2166 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2167 doc
: /* Dump current state of Emacs into executable file FILENAME.
2168 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2169 This is used in the file `loadup.el' when building Emacs.
2171 You must run Emacs in batch mode in order to dump it. */)
2173 Lisp_Object filename
, symfile
;
2175 extern char my_edata
[];
2178 int count
= SPECPDL_INDEX ();
2182 if (! noninteractive
)
2183 error ("Dumping Emacs works only in batch mode");
2185 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2187 fprintf (stderr
, "**************************************************\n");
2188 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2189 fprintf (stderr
, "heap. This usually means that exec-shield or\n");
2190 fprintf (stderr
, "something similar is in effect. The dump may fail\n");
2191 fprintf (stderr
, "because of this. See the section about exec-shield\n");
2192 fprintf (stderr
, "in etc/PROBLEMS for more information.\n");
2193 fprintf (stderr
, "**************************************************\n");
2196 /* Bind `command-line-processed' to nil before dumping,
2197 so that the dumped Emacs will process its command line
2198 and set up to work with X windows if appropriate. */
2199 symbol
= intern ("command-line-processed");
2200 specbind (symbol
, Qnil
);
2202 CHECK_STRING (filename
);
2203 filename
= Fexpand_file_name (filename
, Qnil
);
2204 if (!NILP (symfile
))
2206 CHECK_STRING (symfile
);
2207 if (SCHARS (symfile
))
2208 symfile
= Fexpand_file_name (symfile
, Qnil
);
2212 Vpurify_flag
= Qnil
;
2215 set_time_zone_rule (dump_tz
);
2216 #ifndef LOCALTIME_CACHE
2217 /* Force a tz reload, since set_time_zone_rule doesn't. */
2224 mapout_data (SDATA (filename
));
2226 /* Tell malloc where start of impure now is. */
2227 /* Also arrange for warnings when nearly out of space. */
2228 #ifndef SYSTEM_MALLOC
2230 /* On Windows, this was done before dumping, and that once suffices.
2231 Meanwhile, my_edata is not valid on Windows. */
2232 memory_warnings (my_edata
, malloc_warning
);
2233 #endif /* not WINDOWSNT */
2235 #ifdef DOUG_LEA_MALLOC
2236 malloc_state_ptr
= malloc_get_state ();
2239 #ifdef USE_MMAP_FOR_BUFFERS
2242 unexec (SDATA (filename
),
2243 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2244 #ifdef USE_MMAP_FOR_BUFFERS
2247 #ifdef DOUG_LEA_MALLOC
2248 free (malloc_state_ptr
);
2250 #endif /* not VMS */
2254 return unbind_to (count
, Qnil
);
2257 #endif /* not HAVE_SHM */
2259 #endif /* not CANNOT_DUMP */
2262 /* Recover from setlocale (LC_ALL, ""). */
2266 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2267 so that numbers are read and printed properly for Emacs Lisp. */
2268 setlocale (LC_NUMERIC
, "C");
2271 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2274 synchronize_locale (category
, plocale
, desired_locale
)
2276 Lisp_Object
*plocale
;
2277 Lisp_Object desired_locale
;
2279 if (! EQ (*plocale
, desired_locale
))
2281 *plocale
= desired_locale
;
2282 setlocale (category
, (STRINGP (desired_locale
)
2283 ? (char *)(SDATA (desired_locale
))
2288 /* Set system time locale to match Vsystem_time_locale, if possible. */
2290 synchronize_system_time_locale ()
2292 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2293 Vsystem_time_locale
);
2296 /* Set system messages locale to match Vsystem_messages_locale, if
2299 synchronize_system_messages_locale ()
2302 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2303 Vsystem_messages_locale
);
2306 #endif /* HAVE_SETLOCALE */
2313 decode_env_path (evarname
, defalt
)
2314 char *evarname
, *defalt
;
2316 register char *path
, *p
;
2317 Lisp_Object lpath
, element
, tem
;
2319 /* It's okay to use getenv here, because this function is only used
2320 to initialize variables when Emacs starts up, and isn't called
2323 path
= (char *) getenv (evarname
);
2329 /* Ensure values from the environment use the proper directory separator. */
2332 p
= alloca (strlen (path
) + 1);
2336 if ('/' == DIRECTORY_SEP
)
2337 dostounix_filename (path
);
2339 unixtodos_filename (path
);
2345 p
= index (path
, SEPCHAR
);
2346 if (!p
) p
= path
+ strlen (path
);
2347 element
= (p
- path
? make_string (path
, p
- path
)
2348 : build_string ("."));
2350 /* Add /: to the front of the name
2351 if it would otherwise be treated as magic. */
2352 tem
= Ffind_file_name_handler (element
, Qt
);
2354 /* However, if the handler says "I'm safe",
2355 don't bother adding /:. */
2359 prop
= Fget (tem
, intern ("safe-magic"));
2365 element
= concat2 (build_string ("/:"), element
);
2367 lpath
= Fcons (element
, lpath
);
2373 return Fnreverse (lpath
);
2379 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2380 staticpro (&Qfile_name_handler_alist
);
2384 defsubr (&Sdump_emacs_data
);
2386 defsubr (&Sdump_emacs
);
2390 defsubr (&Skill_emacs
);
2392 defsubr (&Sinvocation_name
);
2393 defsubr (&Sinvocation_directory
);
2395 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2396 doc
: /* Args passed by shell to Emacs, as a list of strings.
2397 Many arguments are deleted from the list as they are processed. */);
2399 DEFVAR_LISP ("system-type", &Vsystem_type
,
2400 doc
: /* Value is symbol indicating type of operating system you are using. */);
2401 Vsystem_type
= intern (SYSTEM_TYPE
);
2403 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2404 doc
: /* Value is string indicating configuration Emacs was built for.
2405 On MS-Windows, the value reflects the OS flavor and version on which
2406 Emacs is running. */);
2407 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2409 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2410 doc
: /* String containing the configuration options Emacs was built with. */);
2411 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2413 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2414 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2416 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2417 doc
: /* Hook to be run when kill-emacs is called.
2418 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2419 in other similar situations), functions placed on this hook should not
2420 expect to be able to interact with the user. To ask for confirmation,
2421 see `kill-emacs-query-functions' instead.
2423 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2424 Vkill_emacs_hook
= Qnil
;
2426 empty_string
= build_string ("");
2427 staticpro (&empty_string
);
2429 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2430 doc
: /* Priority for Emacs to run at.
2431 This value is effective only if set before Emacs is dumped,
2432 and only if the Emacs executable is installed with setuid to permit
2433 it to change priority. (Emacs sets its uid back to the real uid.)
2434 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2435 before you compile Emacs, to enable the code for this feature. */);
2438 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2439 doc
: /* The directory separator in search paths, as a string. */);
2442 Vpath_separator
= make_string (&c
, 1);
2445 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2446 doc
: /* The program name that was used to run Emacs.
2447 Any directory names are omitted. */);
2449 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2450 doc
: /* The directory in which the Emacs executable was found, to run it.
2451 The value is nil if that directory's name is not known. */);
2453 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2454 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2455 This is non-nil when we can't find those directories in their standard
2456 installed locations, but we can find them
2457 near where the Emacs executable was found. */);
2458 Vinstallation_directory
= Qnil
;
2460 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2461 doc
: /* System locale for messages. */);
2462 Vsystem_messages_locale
= Qnil
;
2464 DEFVAR_LISP ("previous-system-messages-locale",
2465 &Vprevious_system_messages_locale
,
2466 doc
: /* Most recently used system locale for messages. */);
2467 Vprevious_system_messages_locale
= Qnil
;
2469 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2470 doc
: /* System locale for time. */);
2471 Vsystem_time_locale
= Qnil
;
2473 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2474 doc
: /* Most recently used system locale for time. */);
2475 Vprevious_system_time_locale
= Qnil
;
2478 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2479 (do not change this comment) */