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 --icon-type, -i use picture of gnu for Emacs icon\n\
309 --iconic start Emacs in iconified state\n\
310 --internal-border, -ib WIDTH width between text and main border\n\
311 --line-spacing, -lsp PIXELS additional space to put between lines\n\
312 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
313 --name NAME title for initial Emacs frame\n\
314 --reverse-video, -r, -rv switch foreground and background\n\
315 --title, -T TITLE title for initial Emacs frame\n\
316 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
317 --xrm XRESOURCES set additional X resources\n\
318 --help display this help and exit\n\
319 --version output version information and exit\n\
321 You can generally also specify long option names with a single -; for\n\
322 example, -batch as well as --batch. You can use any unambiguous\n\
323 abbreviation for a --option.\n\
325 Various environment variables and window system resources also affect\n\
326 Emacs' operation. See the main documentation.\n\
330 Report bugs to %s. First, please see the Bugs\n\
331 section of the Emacs manual or the file BUGS.\n"
334 /* Signal code for the fatal signal that was received. */
335 int fatal_error_code
;
337 /* Nonzero if handling a fatal error already. */
338 int fatal_error_in_progress
;
340 /* If non-null, call this function from fatal_error_signal before
341 committing suicide. */
343 void (*fatal_error_signal_hook
) P_ ((void));
348 handle_USR1_signal (sig
)
351 struct input_event buf
;
353 bzero (&buf
, sizeof buf
);
354 buf
.kind
= USER_SIGNAL_EVENT
;
355 buf
.frame_or_window
= selected_frame
;
357 kbd_buffer_store_event (&buf
);
363 handle_USR2_signal (sig
)
366 struct input_event buf
;
368 bzero (&buf
, sizeof buf
);
369 buf
.kind
= USER_SIGNAL_EVENT
;
371 buf
.frame_or_window
= selected_frame
;
373 kbd_buffer_store_event (&buf
);
377 /* Handle bus errors, invalid instruction, etc. */
379 fatal_error_signal (sig
)
382 fatal_error_code
= sig
;
383 signal (sig
, SIG_DFL
);
385 TOTALLY_UNBLOCK_INPUT
;
387 /* If fatal error occurs in code below, avoid infinite recursion. */
388 if (! fatal_error_in_progress
)
390 fatal_error_in_progress
= 1;
392 shut_down_emacs (sig
, 0, Qnil
);
396 LIB$
STOP (SS$_ABORT
);
398 /* Signal the same code; this time it will really be fatal.
399 Remember that since we're in a signal handler, the signal we're
400 going to send is probably blocked, so we have to unblock it if we
401 want to really receive it. */
403 sigunblock (sigmask (fatal_error_code
));
406 if (fatal_error_signal_hook
)
407 fatal_error_signal_hook ();
409 kill (getpid (), fatal_error_code
);
415 /* Handler for SIGDANGER. */
417 memory_warning_signal (sig
)
420 signal (sig
, memory_warning_signal
);
422 malloc_warning ("Operating system warns that virtual memory is running low.\n");
424 /* It might be unsafe to call do_auto_save now. */
425 force_auto_save_soon ();
429 /* We define abort, rather than using it from the library,
430 so that GDB can return from a breakpoint here.
431 MSDOS has its own definition in msdos.c. */
433 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
435 #ifndef ABORT_RETURN_TYPE
436 #define ABORT_RETURN_TYPE void
442 kill (getpid (), SIGABRT
);
443 /* This shouldn't be executed, but it prevents a warning. */
449 /* Code for dealing with Lisp access to the Unix command line. */
452 init_cmdargs (argc
, argv
, skip_args
)
458 Lisp_Object name
, dir
, tem
;
459 int count
= SPECPDL_INDEX ();
460 Lisp_Object raw_name
;
465 raw_name
= build_string (argv
[0]);
467 /* Add /: to the front of the name
468 if it would otherwise be treated as magic. */
469 tem
= Ffind_file_name_handler (raw_name
, Qt
);
471 raw_name
= concat2 (build_string ("/:"), raw_name
);
473 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
474 Vinvocation_directory
= Ffile_name_directory (raw_name
);
476 /* If we got no directory in argv[0], search PATH to find where
477 Emacs actually came from. */
478 if (NILP (Vinvocation_directory
))
481 int yes
= openp (Vexec_path
, Vinvocation_name
,
482 Vexec_suffixes
, &found
, make_number (X_OK
));
485 /* Add /: to the front of the name
486 if it would otherwise be treated as magic. */
487 tem
= Ffind_file_name_handler (found
, Qt
);
489 found
= concat2 (build_string ("/:"), found
);
490 Vinvocation_directory
= Ffile_name_directory (found
);
494 if (!NILP (Vinvocation_directory
)
495 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
496 /* Emacs was started with relative path, like ./emacs.
498 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
500 Vinstallation_directory
= Qnil
;
502 if (!NILP (Vinvocation_directory
))
504 dir
= Vinvocation_directory
;
505 name
= Fexpand_file_name (Vinvocation_name
, dir
);
508 Lisp_Object tem
, lib_src_exists
;
509 Lisp_Object etc_exists
, info_exists
;
511 /* See if dir contains subdirs for use by Emacs.
512 Check for the ones that would exist in a build directory,
513 not including lisp and info. */
514 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
515 lib_src_exists
= Ffile_exists_p (tem
);
518 /* MSDOS installations frequently remove lib-src, but we still
519 must set installation-directory, or else info won't find
520 its files (it uses the value of installation-directory). */
521 tem
= Fexpand_file_name (build_string ("info"), dir
);
522 info_exists
= Ffile_exists_p (tem
);
527 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
529 tem
= Fexpand_file_name (build_string ("etc"), dir
);
530 etc_exists
= Ffile_exists_p (tem
);
531 if (!NILP (etc_exists
))
533 Vinstallation_directory
534 = Ffile_name_as_directory (dir
);
539 /* See if dir's parent contains those subdirs. */
540 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
541 lib_src_exists
= Ffile_exists_p (tem
);
545 /* See the MSDOS commentary above. */
546 tem
= Fexpand_file_name (build_string ("../info"), dir
);
547 info_exists
= Ffile_exists_p (tem
);
552 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
554 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
555 etc_exists
= Ffile_exists_p (tem
);
556 if (!NILP (etc_exists
))
558 tem
= Fexpand_file_name (build_string (".."), dir
);
559 Vinstallation_directory
560 = Ffile_name_as_directory (tem
);
565 /* If the Emacs executable is actually a link,
566 next try the dir that the link points into. */
567 tem
= Ffile_symlink_p (name
);
570 name
= Fexpand_file_name (tem
, dir
);
571 dir
= Ffile_name_directory (name
);
578 Vcommand_line_args
= Qnil
;
580 for (i
= argc
- 1; i
>= 0; i
--)
582 if (i
== 0 || i
> skip_args
)
584 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
587 unbind_to (count
, Qnil
);
590 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
591 doc
: /* Return the program name that was used to run Emacs.
592 Any directory names are omitted. */)
595 return Fcopy_sequence (Vinvocation_name
);
598 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
600 doc
: /* Return the directory name in which the Emacs executable was located. */)
603 return Fcopy_sequence (Vinvocation_directory
);
608 #ifdef LINK_CRTL_SHARE
609 #ifdef SHARABLE_LIB_BUG
610 extern noshare
char **environ
;
611 #endif /* SHARABLE_LIB_BUG */
612 #endif /* LINK_CRTL_SHARE */
616 /* A valid but unlikely value for the TZ environment value.
617 It is OK (though a bit slower) if the user actually chooses this value. */
618 static char dump_tz
[] = "UtC0";
621 #ifndef ORDINARY_LINK
622 /* We don't include crtbegin.o and crtend.o in the link,
623 so these functions and variables might be missed.
624 Provide dummy definitions to avoid error.
625 (We don't have any real constructors or destructors.) */
627 #ifndef GCC_CTORS_IN_LIBC
628 void __do_global_ctors ()
630 void __do_global_ctors_aux ()
632 void __do_global_dtors ()
634 /* GNU/Linux has a bug in its library; avoid an error. */
636 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
638 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
639 #endif /* GCC_CTORS_IN_LIBC */
642 #endif /* __GNUC__ */
643 #endif /* ORDINARY_LINK */
645 /* Test whether the next argument in ARGV matches SSTR or a prefix of
646 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
647 (the argument is supposed to have a value) store in *VALPTR either
648 the next argument or the portion of this one after the equal sign.
649 ARGV is read starting at position *SKIPPTR; this index is advanced
650 by the number of arguments used.
652 Too bad we can't just use getopt for all of this, but we don't have
653 enough information to do it right. */
656 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
669 /* Don't access argv[argc]; give up in advance. */
670 if (argc
<= *skipptr
+ 1)
673 arg
= argv
[*skipptr
+1];
676 if (strcmp (arg
, sstr
) == 0)
680 *valptr
= argv
[*skipptr
+2];
687 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
688 ? p
- arg
: strlen (arg
));
689 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
691 else if (valptr
== NULL
)
702 else if (argv
[*skipptr
+2] != NULL
)
704 *valptr
= argv
[*skipptr
+2];
714 #ifdef DOUG_LEA_MALLOC
716 /* malloc can be invoked even before main (e.g. by the dynamic
717 linker), so the dumped malloc state must be restored as early as
718 possible using this special hook. */
721 malloc_initialize_hook ()
724 extern char **environ
;
729 if (!malloc_using_checking
)
730 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
731 ignored if the heap to be restored was constructed without
732 malloc checking. Can't use unsetenv, since that calls malloc. */
736 for (p
= environ
; p
&& *p
; p
++)
737 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
746 malloc_set_state (malloc_state_ptr
);
747 free (malloc_state_ptr
);
751 if (my_heap_start
== 0)
752 my_heap_start
= sbrk (0);
753 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
757 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
759 #endif /* DOUG_LEA_MALLOC */
762 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
763 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
765 /* This function is used to determine an address to which bug report should
769 bug_reporting_address ()
775 temp
= Fsymbol_value (intern ("emacs-version"));
777 /* When `emacs-version' is invalid, use normal address. */
779 return REPORT_EMACS_BUG_ADDRESS
;
781 string
= SDATA (temp
);
783 /* Count dots in `emacs-version'. */
791 /* When `emacs-version' has at least three dots, it is development or
792 pretest version of Emacs. */
793 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
813 char stack_bottom_variable
;
814 int do_initial_setlocale
;
819 #ifdef HAVE_SETRLIMIT
826 extern Lisp_Object
*stack_base
;
832 extern char my_endbss
[];
833 extern char *my_endbss_static
;
835 if (my_heap_start
== 0)
836 my_heap_start
= sbrk (0);
838 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
841 #ifdef LINUX_SBRK_BUG
845 #ifdef RUN_TIME_REMAP
847 run_time_remap (argv
[0]);
852 unexec_init_emacs_zone ();
855 sort_args (argc
, argv
);
857 while (argv
[argc
]) argc
++;
859 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
860 /* We don't know the version number unless this is a dumped Emacs.
861 So ignore --version otherwise. */
865 tem
= Fsymbol_value (intern ("emacs-version"));
868 fprintf (stderr
, "Invalid value of `emacs-version'\n");
873 printf ("GNU Emacs %s\n", SDATA (tem
));
874 printf ("Copyright (C) 2004 Free Software Foundation, Inc.\n");
875 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
876 printf ("You may redistribute copies of Emacs\n");
877 printf ("under the terms of the GNU General Public License.\n");
878 printf ("For more information about these matters, ");
879 printf ("see the file named COPYING.\n");
884 #ifdef HAVE_PERSONALITY_LINUX32
885 /* See if there is a gap between the end of BSS and the heap.
886 In that case, set personality and exec ourself again. */
888 && (strcmp (argv
[argc
-1], "dump") == 0
889 || strcmp (argv
[argc
-1], "bootstrap") == 0)
890 && heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
892 if (! getenv ("EMACS_HEAP_EXEC"))
894 /* Set this so we only do this once. */
895 putenv("EMACS_HEAP_EXEC=true");
896 personality (PER_LINUX32
);
897 execvp (argv
[0], argv
);
899 /* If the exec fails, try to dump anyway. */
903 #endif /* HAVE_PERSONALITY_LINUX32 */
906 /* Map in shared memory, if we are using that. */
908 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
911 /* The shared memory was just restored, which clobbered this. */
917 /* The shared memory was just restored, which clobbered this. */
924 extern int malloc_cookie
;
925 /* This helps out unexnext.c. */
927 if (malloc_jumpstart (malloc_cookie
) != 0)
928 printf ("malloc jumpstart failed!\n");
933 /* Skip process serial number passed in the form -psn_x_y as
934 command-line argument. */
935 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
940 /* If -map specified, map the data file in. */
943 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &file
, &skip_args
))
947 #ifdef LINK_CRTL_SHARE
948 #ifdef SHARABLE_LIB_BUG
949 /* Bletcherous shared libraries! */
951 stdin
= fdopen (0, "r");
953 stdout
= fdopen (1, "w");
955 stderr
= fdopen (2, "w");
958 #endif /* SHARABLE_LIB_BUG */
959 #endif /* LINK_CRTL_SHARE */
962 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
963 /* Extend the stack space available.
964 Don't do that if dumping, since some systems (e.g. DJGPP)
965 might define a smaller stack limit at that time. */
968 && (!noninteractive
|| initialized
)
970 && !getrlimit (RLIMIT_STACK
, &rlim
))
973 extern int re_max_failures
;
974 /* Approximate the amount regex.c needs per unit of re_max_failures. */
975 int ratio
= 20 * sizeof (char *);
976 /* Then add 33% to cover the size of the smaller stacks that regex.c
977 successively allocates and discards, on its way to the maximum. */
979 /* Add in some extra to cover
980 what we're likely to use for other reasons. */
981 newlim
= re_max_failures
* ratio
+ 200000;
983 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
984 stack allocation routine for new process that the allocation
985 fails if stack limit is not on page boundary. So, round up the
986 new limit to page boundary. */
987 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
989 if (newlim
> rlim
.rlim_max
)
991 newlim
= rlim
.rlim_max
;
992 /* Don't let regex.c overflow the stack we have. */
993 re_max_failures
= (newlim
- 200000) / ratio
;
995 if (rlim
.rlim_cur
< newlim
)
996 rlim
.rlim_cur
= newlim
;
998 setrlimit (RLIMIT_STACK
, &rlim
);
1000 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1002 /* Record (approximately) where the stack begins. */
1003 stack_bottom
= &stack_bottom_variable
;
1005 #ifdef USG_SHARED_LIBRARIES
1007 brk ((void *)bss_end
);
1012 #ifndef SYSTEM_MALLOC
1013 /* Arrange to get warning messages as memory fills up. */
1014 memory_warnings (0, malloc_warning
);
1016 /* Call malloc at least once, to run the initial __malloc_hook.
1017 Also call realloc and free for consistency. */
1018 free (realloc (malloc (4), 4));
1020 /* Arrange to disable interrupt input inside malloc etc. */
1021 uninterrupt_malloc ();
1022 #endif /* not SYSTEM_MALLOC */
1024 #if defined (MSDOS) || defined (WINDOWSNT)
1025 /* We do all file input/output as binary files. When we need to translate
1026 newlines, we do that manually. */
1028 #endif /* MSDOS || WINDOWSNT */
1032 if (!isatty (fileno (stdin
)))
1033 setmode (fileno (stdin
), O_BINARY
);
1034 if (!isatty (fileno (stdout
)))
1037 setmode (fileno (stdout
), O_BINARY
);
1039 #else /* not __DJGPP__ >= 2 */
1040 (stdin
)->_flag
&= ~_IOTEXT
;
1041 (stdout
)->_flag
&= ~_IOTEXT
;
1042 (stderr
)->_flag
&= ~_IOTEXT
;
1043 #endif /* not __DJGPP__ >= 2 */
1046 #ifdef SET_EMACS_PRIORITY
1048 nice (emacs_priority
);
1050 #endif /* SET_EMACS_PRIORITY */
1052 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1053 The build procedure uses this while dumping, to ensure that the
1054 dumped Emacs does not have its system locale tables initialized,
1055 as that might cause screwups when the dumped Emacs starts up. */
1057 char *lc_all
= getenv ("LC_ALL");
1058 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1061 /* Set locale now, so that initial error messages are localized properly.
1062 fixup_locale must wait until later, since it builds strings. */
1063 if (do_initial_setlocale
)
1064 setlocale (LC_ALL
, "");
1066 #ifdef EXTRA_INITIALIZE
1070 inhibit_window_system
= 0;
1072 /* Handle the -t switch, which specifies filename to use as terminal. */
1076 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1081 result
= emacs_open (term
, O_RDWR
, 0);
1084 char *errstring
= strerror (errno
);
1085 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1091 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1094 fprintf (stderr
, "Using %s\n", term
);
1095 #ifdef HAVE_WINDOW_SYSTEM
1096 inhibit_window_system
= 1; /* -t => -nw */
1103 /* Command line option --no-windows is deprecated and thus not mentioned
1104 in the manual and usage informations. */
1105 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1106 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1107 inhibit_window_system
= 1;
1109 /* Handle the -batch switch, which means don't do interactive display. */
1111 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1113 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1115 noninteractive
= 1; /* Set batch mode. */
1116 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1117 handled in proper sequence. */
1118 argv
[skip_args
- 1] = "-l";
1120 sort_args (argc
, argv
);
1123 /* Handle the --help option, which gives a usage message. */
1124 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1126 printf (USAGE1
, argv
[0], USAGE2
);
1128 printf (USAGE4
, bug_reporting_address ());
1132 if (! noninteractive
)
1137 inherited_pgroup
= EMACS_GETPGRP (0);
1138 setpgrp (0, getpid ());
1141 #if defined (USG5) && defined (INTERRUPT_INPUT)
1149 /* Don't catch SIGHUP if dumping. */
1156 sigblock (sigmask (SIGHUP
));
1157 /* In --batch mode, don't catch SIGHUP if already ignored.
1158 That makes nohup work. */
1159 if (! noninteractive
1160 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1161 signal (SIGHUP
, fatal_error_signal
);
1162 sigunblock (sigmask (SIGHUP
));
1167 ! noninteractive
|| initialized
1173 /* Don't catch these signals in batch mode if dumping.
1174 On some machines, this sets static data that would make
1175 signal fail to work right when the dumped Emacs is run. */
1176 signal (SIGQUIT
, fatal_error_signal
);
1177 signal (SIGILL
, fatal_error_signal
);
1178 signal (SIGTRAP
, fatal_error_signal
);
1180 signal (SIGUSR1
, handle_USR1_signal
);
1182 signal (SIGUSR2
, handle_USR2_signal
);
1186 signal (SIGABRT
, fatal_error_signal
);
1189 signal (SIGHWE
, fatal_error_signal
);
1192 signal (SIGPRE
, fatal_error_signal
);
1195 signal (SIGORE
, fatal_error_signal
);
1198 signal (SIGUME
, fatal_error_signal
);
1201 signal (SIGDLK
, fatal_error_signal
);
1204 signal (SIGCPULIM
, fatal_error_signal
);
1207 /* This is missing on some systems - OS/2, for example. */
1208 signal (SIGIOT
, fatal_error_signal
);
1211 signal (SIGEMT
, fatal_error_signal
);
1213 signal (SIGFPE
, fatal_error_signal
);
1215 signal (SIGBUS
, fatal_error_signal
);
1217 signal (SIGSEGV
, fatal_error_signal
);
1219 signal (SIGSYS
, fatal_error_signal
);
1221 signal (SIGTERM
, fatal_error_signal
);
1223 signal (SIGXCPU
, fatal_error_signal
);
1226 signal (SIGXFSZ
, fatal_error_signal
);
1227 #endif /* SIGXFSZ */
1230 /* This just means available memory is getting low. */
1231 signal (SIGDANGER
, memory_warning_signal
);
1235 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1236 signal (SIGXCPU
, fatal_error_signal
);
1238 signal (SIGIOINT
, fatal_error_signal
);
1240 signal (SIGGRANT
, fatal_error_signal
);
1241 signal (SIGRETRACT
, fatal_error_signal
);
1242 signal (SIGSOUND
, fatal_error_signal
);
1243 signal (SIGMSG
, fatal_error_signal
);
1247 noninteractive1
= noninteractive
;
1249 /* Perform basic initializations (not merely interning symbols). */
1256 init_character_once ();
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 /* Make a multibyte buffer unibyte. */
1372 if (BUF_Z_BYTE (XBUFFER (buffer
)) > BUF_Z (XBUFFER (buffer
)))
1374 struct buffer
*current
= current_buffer
;
1376 set_buffer_temp (XBUFFER (buffer
));
1377 Fset_buffer_multibyte (Qnil
);
1378 set_buffer_temp (current
);
1385 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1388 #ifdef HAVE_X_WINDOWS
1389 /* Stupid kludge to catch command-line display spec. We can't
1390 handle this argument entirely in window system dependent code
1391 because we don't even know which window system dependent code
1392 to run until we've recognized this argument. */
1394 char *displayname
= 0;
1395 int count_before
= skip_args
;
1397 /* Skip any number of -d options, but only use the last one. */
1400 int count_before_this
= skip_args
;
1402 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1404 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1409 count_before
= count_before_this
;
1412 /* If we have the form --display=NAME,
1413 convert it into -d name.
1414 This requires inserting a new element into argv. */
1415 if (displayname
!= 0 && skip_args
- count_before
== 1)
1417 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1420 for (j
= 0; j
< count_before
+ 1; j
++)
1422 new[count_before
+ 1] = "-d";
1423 new[count_before
+ 2] = displayname
;
1424 for (j
= count_before
+ 2; j
<argc
; j
++)
1425 new[j
+ 1] = argv
[j
];
1429 /* Change --display to -d, when its arg is separate. */
1430 else if (displayname
!= 0 && skip_args
> count_before
1431 && argv
[count_before
+ 1][1] == '-')
1432 argv
[count_before
+ 1] = "-d";
1434 /* Don't actually discard this arg. */
1435 skip_args
= count_before
;
1439 /* argmatch must not be used after here,
1440 except when bulding temacs
1441 because the -d argument has not been skipped in skip_args. */
1444 /* Call early 'cause init_environment needs it. */
1446 /* Set defaults for several environment variables. */
1448 init_environment (argc
, argv
, skip_args
);
1455 /* Initialize environment from registry settings. */
1456 init_environment (argv
);
1457 init_ntproc (); /* must precede init_editfns. */
1462 init_mac_osx_environment ();
1465 /* egetenv is a pretty low-level facility, which may get called in
1466 many circumstances; it seems flimsy to put off initializing it
1467 until calling init_callproc. */
1468 set_process_environment ();
1469 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1470 if this is not done. Do it after set_process_environment so that we
1471 don't pollute Vprocess_environment. */
1472 /* Setting LANG here will defeat the startup locale processing... */
1477 init_buffer (); /* Init default directory of main buffer. */
1479 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1480 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1484 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1485 Lisp_Object old_log_max
;
1486 old_log_max
= Vmessage_log_max
;
1487 XSETFASTINT (Vmessage_log_max
, 0);
1488 message_dolog ("", 0, 1, 0);
1489 Vmessage_log_max
= old_log_max
;
1492 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1495 /* Intern the names of all standard functions and variables;
1496 define standard keys. */
1500 /* The basic levels of Lisp must come first. */
1501 /* And data must come first of all
1502 for the sake of symbols like error-message. */
1504 /* Called before init_window_once for Mac OS Classic. */
1513 syms_of_floatfns ();
1517 syms_of_bytecode ();
1519 syms_of_casefiddle ();
1521 syms_of_callproc ();
1522 syms_of_category ();
1524 /* Called before init_window_once for Mac OS Classic. */
1527 syms_of_character ();
1530 #ifndef NO_DIR_LIBRARY
1532 #endif /* not NO_DIR_LIBRARY */
1538 syms_of_coding (); /* This should be after syms_of_fileio. */
1539 #ifdef CLASH_DETECTION
1540 syms_of_filelock ();
1541 #endif /* CLASH_DETECTION */
1550 /* Called before init_window_once for Mac OS Classic. */
1561 /* Called before init_window_once for Mac OS Classic. */
1562 syms_of_textprop ();
1564 syms_of_composite ();
1570 #endif /* WINDOWSNT */
1573 #ifdef HAVE_WINDOW_SYSTEM
1576 #endif /* HAVE_WINDOW_SYSTEM */
1577 #ifdef HAVE_X_WINDOWS
1587 #endif /* HAVE_X_WINDOWS */
1592 /* Called before init_window_once for Mac OS Classic. */
1601 syms_of_w32select ();
1604 #endif /* HAVE_NTGUI */
1611 #endif /* HAVE_CARBON */
1621 keys_of_casefiddle ();
1624 keys_of_keyboard ();
1632 Initialization that must be done even if the global variable
1633 initialized is non zero
1636 globals_of_w32fns ();
1637 globals_of_w32menu ();
1638 #endif /* end #ifdef HAVE_NTGUI */
1643 if (!noninteractive
)
1646 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1648 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1651 /* Called before init_window_once for Mac OS Classic. */
1652 init_keyboard (); /* This too must precede init_sys_modes. */
1655 init_vmsproc (); /* And this too. */
1657 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1660 #ifdef HAVE_WINDOW_SYSTEM
1663 #endif /* HAVE_WINDOW_SYSTEM */
1679 /* Handle -l loadup, args passed by Makefile. */
1680 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1681 Vtop_level
= Fcons (intern ("load"),
1682 Fcons (build_string (file
), Qnil
));
1683 /* Unless next switch is -nl, load "loadup.el" first thing. */
1685 Vtop_level
= Fcons (intern ("load"),
1686 Fcons (build_string ("loadup.el"), Qnil
));
1693 /* If the execution TZ happens to be the same as the dump TZ,
1694 change it to some other value and then change it back,
1695 to force the underlying implementation to reload the TZ info.
1696 This is needed on implementations that load TZ info from files,
1697 since the TZ file contents may differ between dump and execution. */
1698 char *tz
= getenv ("TZ");
1699 if (tz
&& !strcmp (tz
, dump_tz
))
1709 /* Set up for profiling. This is known to work on FreeBSD and
1710 GNU/Linux. It might work on some other systems too. Give it a
1711 try and tell us if it works on your system. To compile for
1712 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1713 #if defined (__FreeBSD__) || defined (__linux)
1717 extern void _mcleanup ();
1719 extern void safe_bcopy ();
1720 extern void dump_opcode_frequencies ();
1723 /* This uses safe_bcopy because that function comes first in the
1724 Emacs executable. It might be better to use something that
1725 gives the start of the text segment, but start_of_text is not
1726 defined on all systems now. */
1727 monstartup (safe_bcopy
, &etext
);
1736 #ifdef LOCALTIME_CACHE
1737 /* Some versions of localtime have a bug. They cache the value of the time
1738 zone rather than looking it up every time. Since localtime() is
1739 called to bolt the undumping time into the undumped emacs, this
1740 results in localtime ignoring the TZ environment variable.
1741 This flushes the new TZ value into localtime. */
1743 #endif /* defined (LOCALTIME_CACHE) */
1745 /* Enter editor command loop. This never returns. */
1751 /* Sort the args so we can find the most important ones
1752 at the beginning of argv. */
1754 /* First, here's a table of all the standard options. */
1756 struct standard_args
1764 struct standard_args standard_args
[] =
1766 { "-version", "--version", 150, 0 },
1768 { "-nl", "--no-shared-memory", 140, 0 },
1771 { "-map", "--map-data", 130, 0 },
1773 { "-t", "--terminal", 120, 1 },
1774 { "-nw", "--no-window-system", 110, 0 },
1775 { "-nw", "--no-windows", 110, 0 },
1776 { "-batch", "--batch", 100, 0 },
1777 { "-script", "--script", 100, 1 },
1778 { "-help", "--help", 90, 0 },
1779 { "-no-unibyte", "--no-unibyte", 83, 0 },
1780 { "-multibyte", "--multibyte", 82, 0 },
1781 { "-unibyte", "--unibyte", 81, 0 },
1782 { "-no-multibyte", "--no-multibyte", 80, 0 },
1783 { "-nl", "--no-loadup", 70, 0 },
1784 /* -d must come last before the options handled in startup.el. */
1785 { "-d", "--display", 60, 1 },
1786 { "-display", 0, 60, 1 },
1787 /* Now for the options handled in startup.el. */
1788 { "-q", "--no-init-file", 50, 0 },
1789 { "-no-init-file", 0, 50, 0 },
1790 { "-no-site-file", "--no-site-file", 40, 0 },
1791 { "-no-splash", "--no-splash", 40, 0 },
1792 { "-u", "--user", 30, 1 },
1793 { "-user", 0, 30, 1 },
1794 { "-debug-init", "--debug-init", 20, 0 },
1795 { "-i", "--icon-type", 15, 0 },
1796 { "-itype", 0, 15, 0 },
1797 { "-iconic", "--iconic", 15, 0 },
1798 { "-bg", "--background-color", 10, 1 },
1799 { "-background", 0, 10, 1 },
1800 { "-fg", "--foreground-color", 10, 1 },
1801 { "-foreground", 0, 10, 1 },
1802 { "-bd", "--border-color", 10, 1 },
1803 { "-bw", "--border-width", 10, 1 },
1804 { "-ib", "--internal-border", 10, 1 },
1805 { "-ms", "--mouse-color", 10, 1 },
1806 { "-cr", "--cursor-color", 10, 1 },
1807 { "-fn", "--font", 10, 1 },
1808 { "-font", 0, 10, 1 },
1809 { "-fs", "--fullscreen", 10, 0 },
1810 { "-fw", "--fullwidth", 10, 0 },
1811 { "-fh", "--fullheight", 10, 0 },
1812 { "-g", "--geometry", 10, 1 },
1813 { "-geometry", 0, 10, 1 },
1814 { "-T", "--title", 10, 1 },
1815 { "-title", 0, 10, 1 },
1816 { "-name", "--name", 10, 1 },
1817 { "-xrm", "--xrm", 10, 1 },
1818 { "-r", "--reverse-video", 5, 0 },
1820 { "-reverse", 0, 5, 0 },
1821 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1822 { "-vb", "--vertical-scroll-bars", 5, 0 },
1823 { "-color", "--color", 5, 0},
1824 /* These have the same priority as ordinary file name args,
1825 so they are not reordered with respect to those. */
1826 { "-L", "--directory", 0, 1 },
1827 { "-directory", 0, 0, 1 },
1828 { "-l", "--load", 0, 1 },
1829 { "-load", 0, 0, 1 },
1830 { "-f", "--funcall", 0, 1 },
1831 { "-funcall", 0, 0, 1 },
1832 { "-eval", "--eval", 0, 1 },
1833 { "-execute", "--execute", 0, 1 },
1834 { "-find-file", "--find-file", 0, 1 },
1835 { "-visit", "--visit", 0, 1 },
1836 { "-file", "--file", 0, 1 },
1837 { "-insert", "--insert", 0, 1 },
1838 /* This should be processed after ordinary file name args and the like. */
1839 { "-kill", "--kill", -10, 0 },
1842 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1843 so that the highest priority ones come first.
1844 Do not change the order of elements of equal priority.
1845 If an option takes an argument, keep it and its argument together.
1847 If an option that takes no argument appears more
1848 than once, eliminate all but one copy of it. */
1851 sort_args (argc
, argv
)
1855 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1856 /* For each element of argv,
1857 the corresponding element of options is:
1858 0 for an option that takes no arguments,
1859 1 for an option that takes one argument, etc.
1860 -1 for an ordinary non-option argument. */
1861 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1862 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1864 int incoming_used
= 1;
1868 /* Categorize all the options,
1869 and figure out which argv elts are option arguments. */
1870 for (from
= 1; from
< argc
; from
++)
1874 if (argv
[from
][0] == '-')
1879 /* If we have found "--", don't consider
1880 any more arguments as options. */
1881 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1883 /* Leave the "--", and everything following it, at the end. */
1884 for (; from
< argc
; from
++)
1886 priority
[from
] = -100;
1892 /* Look for a match with a known old-fashioned option. */
1893 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1894 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1896 options
[from
] = standard_args
[i
].nargs
;
1897 priority
[from
] = standard_args
[i
].priority
;
1898 if (from
+ standard_args
[i
].nargs
>= argc
)
1899 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1900 from
+= standard_args
[i
].nargs
;
1904 /* Look for a match with a known long option.
1905 MATCH is -1 if no match so far, -2 if two or more matches so far,
1906 >= 0 (the table index of the match) if just one match so far. */
1907 if (argv
[from
][1] == '-')
1910 thislen
= strlen (argv
[from
]);
1911 equals
= index (argv
[from
], '=');
1913 thislen
= equals
- argv
[from
];
1916 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1917 if (standard_args
[i
].longname
1918 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1927 /* If we found exactly one match, use that. */
1930 options
[from
] = standard_args
[match
].nargs
;
1931 priority
[from
] = standard_args
[match
].priority
;
1932 /* If --OPTION=VALUE syntax is used,
1933 this option uses just one argv element. */
1936 if (from
+ options
[from
] >= argc
)
1937 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1938 from
+= options
[from
];
1945 /* Copy the arguments, in order of decreasing priority, to NEW. */
1947 while (incoming_used
< argc
)
1950 int best_priority
= -9999;
1952 /* Find the highest priority remaining option.
1953 If several have equal priority, take the first of them. */
1954 for (from
= 1; from
< argc
; from
++)
1956 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1958 best_priority
= priority
[from
];
1961 /* Skip option arguments--they are tied to the options. */
1962 if (options
[from
] > 0)
1963 from
+= options
[from
];
1969 /* Copy the highest priority remaining option, with its args, to NEW.
1970 Unless it is a duplicate of the previous one. */
1971 if (! (options
[best
] == 0
1972 && ! strcmp (new[to
- 1], argv
[best
])))
1974 new[to
++] = argv
[best
];
1975 for (i
= 0; i
< options
[best
]; i
++)
1976 new[to
++] = argv
[best
+ i
+ 1];
1979 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1981 /* Clear out this option in ARGV. */
1983 for (i
= 0; i
< options
[best
]; i
++)
1984 argv
[best
+ i
+ 1] = 0;
1987 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1991 bcopy (new, argv
, sizeof (char *) * argc
);
1998 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1999 doc
: /* Exit the Emacs job and kill it.
2000 If ARG is an integer, return ARG as the exit program code.
2001 If ARG is a string, stuff it as keyboard input.
2003 The value of `kill-emacs-hook', if not void,
2004 is a list of functions (of no args),
2005 all of which are called before Emacs is actually killed. */)
2009 struct gcpro gcpro1
;
2016 if (!NILP (Vrun_hooks
) && !noninteractive
)
2017 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
2021 /* Is it really necessary to do this deassign
2022 when we are going to exit anyway? */
2027 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2029 /* If we have an auto-save list file,
2030 kill it because we are exiting Emacs deliberately (not crashing).
2031 Do it after shut_down_emacs, which does an auto-save. */
2032 if (STRINGP (Vauto_save_list_file_name
))
2033 unlink (SDATA (Vauto_save_list_file_name
));
2035 exit (INTEGERP (arg
) ? XINT (arg
)
2046 /* Perform an orderly shutdown of Emacs. Autosave any modified
2047 buffers, kill any child processes, clean up the terminal modes (if
2048 we're in the foreground), and other stuff like that. Don't perform
2049 any redisplay; this may be called when Emacs is shutting down in
2050 the background, or after its X connection has died.
2052 If SIG is a signal number, print a message for it.
2054 This is called by fatal signal handlers, X protocol error handlers,
2058 shut_down_emacs (sig
, no_x
, stuff
)
2062 /* Prevent running of hooks from now on. */
2065 /* Don't update display from now on. */
2066 Vinhibit_redisplay
= Qt
;
2068 /* If we are controlling the terminal, reset terminal modes. */
2069 #ifdef EMACS_HAVE_TTY_PGRP
2071 int pgrp
= EMACS_GETPGRP (0);
2074 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2079 if (sig
&& sig
!= SIGTERM
)
2080 fprintf (stderr
, "Fatal error (%d)", sig
);
2088 stuff_buffered_input (stuff
);
2090 kill_buffer_processes (Qnil
);
2091 Fdo_auto_save (Qt
, Qnil
);
2093 #ifdef CLASH_DETECTION
2094 unlock_all_files ();
2098 kill_vms_processes ();
2101 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2102 #ifdef HAVE_X_WINDOWS
2103 /* It's not safe to call intern here. Maybe we are crashing. */
2104 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2105 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2106 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2108 Fx_close_current_connection ();
2109 #endif /* HAVE_X_WINDOWS */
2113 /* There is a tendency for a SIGIO signal to arrive within exit,
2114 and cause a SIGHUP because the input descriptor is already closed. */
2116 signal (SIGIO
, SIG_IGN
);
2123 /* Do this only if terminating normally, we want glyph matrices
2124 etc. in a core dump. */
2125 if (sig
== 0 || sig
== SIGTERM
)
2127 check_glyph_memory ();
2128 check_message_stack ();
2142 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2143 doc
: /* Dump current state of Emacs into data file FILENAME.
2144 This function exists on systems that use HAVE_SHM. */)
2146 Lisp_Object filename
;
2148 extern char my_edata
[];
2152 CHECK_STRING (filename
);
2153 filename
= Fexpand_file_name (filename
, Qnil
);
2156 Vpurify_flag
= Qnil
;
2159 /* Tell malloc where start of impure now is. */
2160 /* Also arrange for warnings when nearly out of space. */
2161 #ifndef SYSTEM_MALLOC
2162 memory_warnings (my_edata
, malloc_warning
);
2164 map_out_data (SDATA (filename
));
2171 #else /* not HAVE_SHM */
2173 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2174 doc
: /* Dump current state of Emacs into executable file FILENAME.
2175 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2176 This is used in the file `loadup.el' when building Emacs.
2178 You must run Emacs in batch mode in order to dump it. */)
2180 Lisp_Object filename
, symfile
;
2182 extern char my_edata
[];
2185 int count
= SPECPDL_INDEX ();
2189 if (! noninteractive
)
2190 error ("Dumping Emacs works only in batch mode");
2192 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2194 fprintf (stderr
, "**************************************************\n");
2195 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2196 fprintf (stderr
, "heap. This usually means that exec-shield or\n");
2197 fprintf (stderr
, "something similar is in effect. The dump may fail\n");
2198 fprintf (stderr
, "because of this. See the section about exec-shield\n");
2199 fprintf (stderr
, "in etc/PROBLEMS for more information.\n");
2200 fprintf (stderr
, "**************************************************\n");
2203 /* Bind `command-line-processed' to nil before dumping,
2204 so that the dumped Emacs will process its command line
2205 and set up to work with X windows if appropriate. */
2206 symbol
= intern ("command-line-processed");
2207 specbind (symbol
, Qnil
);
2209 CHECK_STRING (filename
);
2210 filename
= Fexpand_file_name (filename
, Qnil
);
2211 if (!NILP (symfile
))
2213 CHECK_STRING (symfile
);
2214 if (SCHARS (symfile
))
2215 symfile
= Fexpand_file_name (symfile
, Qnil
);
2219 Vpurify_flag
= Qnil
;
2222 set_time_zone_rule (dump_tz
);
2223 #ifndef LOCALTIME_CACHE
2224 /* Force a tz reload, since set_time_zone_rule doesn't. */
2231 mapout_data (SDATA (filename
));
2233 /* Tell malloc where start of impure now is. */
2234 /* Also arrange for warnings when nearly out of space. */
2235 #ifndef SYSTEM_MALLOC
2237 /* On Windows, this was done before dumping, and that once suffices.
2238 Meanwhile, my_edata is not valid on Windows. */
2239 memory_warnings (my_edata
, malloc_warning
);
2240 #endif /* not WINDOWSNT */
2242 #ifdef DOUG_LEA_MALLOC
2243 malloc_state_ptr
= malloc_get_state ();
2246 #ifdef USE_MMAP_FOR_BUFFERS
2249 unexec (SDATA (filename
),
2250 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2251 #ifdef USE_MMAP_FOR_BUFFERS
2254 #ifdef DOUG_LEA_MALLOC
2255 free (malloc_state_ptr
);
2257 #endif /* not VMS */
2261 return unbind_to (count
, Qnil
);
2264 #endif /* not HAVE_SHM */
2266 #endif /* not CANNOT_DUMP */
2269 /* Recover from setlocale (LC_ALL, ""). */
2273 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2274 so that numbers are read and printed properly for Emacs Lisp. */
2275 setlocale (LC_NUMERIC
, "C");
2278 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2281 synchronize_locale (category
, plocale
, desired_locale
)
2283 Lisp_Object
*plocale
;
2284 Lisp_Object desired_locale
;
2286 if (! EQ (*plocale
, desired_locale
))
2288 *plocale
= desired_locale
;
2289 setlocale (category
, (STRINGP (desired_locale
)
2290 ? (char *)(SDATA (desired_locale
))
2295 /* Set system time locale to match Vsystem_time_locale, if possible. */
2297 synchronize_system_time_locale ()
2299 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2300 Vsystem_time_locale
);
2303 /* Set system messages locale to match Vsystem_messages_locale, if
2306 synchronize_system_messages_locale ()
2309 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2310 Vsystem_messages_locale
);
2313 #endif /* HAVE_SETLOCALE */
2320 decode_env_path (evarname
, defalt
)
2321 char *evarname
, *defalt
;
2323 register char *path
, *p
;
2324 Lisp_Object lpath
, element
, tem
;
2326 /* It's okay to use getenv here, because this function is only used
2327 to initialize variables when Emacs starts up, and isn't called
2330 path
= (char *) getenv (evarname
);
2336 /* Ensure values from the environment use the proper directory separator. */
2339 p
= alloca (strlen (path
) + 1);
2343 if ('/' == DIRECTORY_SEP
)
2344 dostounix_filename (path
);
2346 unixtodos_filename (path
);
2352 p
= index (path
, SEPCHAR
);
2353 if (!p
) p
= path
+ strlen (path
);
2354 element
= (p
- path
? make_string (path
, p
- path
)
2355 : build_string ("."));
2357 /* Add /: to the front of the name
2358 if it would otherwise be treated as magic. */
2359 tem
= Ffind_file_name_handler (element
, Qt
);
2361 /* However, if the handler says "I'm safe",
2362 don't bother adding /:. */
2366 prop
= Fget (tem
, intern ("safe-magic"));
2372 element
= concat2 (build_string ("/:"), element
);
2374 lpath
= Fcons (element
, lpath
);
2380 return Fnreverse (lpath
);
2386 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2387 staticpro (&Qfile_name_handler_alist
);
2391 defsubr (&Sdump_emacs_data
);
2393 defsubr (&Sdump_emacs
);
2397 defsubr (&Skill_emacs
);
2399 defsubr (&Sinvocation_name
);
2400 defsubr (&Sinvocation_directory
);
2402 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2403 doc
: /* Args passed by shell to Emacs, as a list of strings.
2404 Many arguments are deleted from the list as they are processed. */);
2406 DEFVAR_LISP ("system-type", &Vsystem_type
,
2407 doc
: /* Value is symbol indicating type of operating system you are using. */);
2408 Vsystem_type
= intern (SYSTEM_TYPE
);
2410 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2411 doc
: /* Value is string indicating configuration Emacs was built for.
2412 On MS-Windows, the value reflects the OS flavor and version on which
2413 Emacs is running. */);
2414 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2416 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2417 doc
: /* String containing the configuration options Emacs was built with. */);
2418 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2420 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2421 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2423 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2424 doc
: /* Hook to be run when kill-emacs is called.
2425 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2426 in other similar situations), functions placed on this hook should not
2427 expect to be able to interact with the user. To ask for confirmation,
2428 see `kill-emacs-query-functions' instead.
2430 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2431 Vkill_emacs_hook
= Qnil
;
2433 empty_string
= build_string ("");
2434 staticpro (&empty_string
);
2436 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2437 doc
: /* Priority for Emacs to run at.
2438 This value is effective only if set before Emacs is dumped,
2439 and only if the Emacs executable is installed with setuid to permit
2440 it to change priority. (Emacs sets its uid back to the real uid.)
2441 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2442 before you compile Emacs, to enable the code for this feature. */);
2445 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2446 doc
: /* The directory separator in search paths, as a string. */);
2449 Vpath_separator
= make_string (&c
, 1);
2452 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2453 doc
: /* The program name that was used to run Emacs.
2454 Any directory names are omitted. */);
2456 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2457 doc
: /* The directory in which the Emacs executable was found, to run it.
2458 The value is nil if that directory's name is not known. */);
2460 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2461 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2462 This is non-nil when we can't find those directories in their standard
2463 installed locations, but we can find them
2464 near where the Emacs executable was found. */);
2465 Vinstallation_directory
= Qnil
;
2467 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2468 doc
: /* System locale for messages. */);
2469 Vsystem_messages_locale
= Qnil
;
2471 DEFVAR_LISP ("previous-system-messages-locale",
2472 &Vprevious_system_messages_locale
,
2473 doc
: /* Most recently used system locale for messages. */);
2474 Vprevious_system_messages_locale
= Qnil
;
2476 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2477 doc
: /* System locale for time. */);
2478 Vsystem_time_locale
= Qnil
;
2480 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2481 doc
: /* Most recently used system locale for time. */);
2482 Vprevious_system_time_locale
= Qnil
;
2485 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2486 (do not change this comment) */