1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,2003
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
40 #include <sys/ioctl.h>
49 #include "intervals.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
57 #include "termhooks.h"
67 #include <sys/resource.h>
75 #if !defined (USG) || defined (BSD_PGRPS)
77 #define setpgrp setpgid
81 extern void malloc_warning
P_ ((char *));
82 extern void set_time_zone_rule
P_ ((char *));
84 extern char *index
P_ ((const char *, int));
87 /* Make these values available in GDB, which doesn't see macros. */
89 EMACS_INT gdb_valbits
= VALBITS
;
90 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
91 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
93 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
95 EMACS_INT gdb_data_seg_bits
= 0;
97 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
99 /* Command line args from shell, as list of strings. */
100 Lisp_Object Vcommand_line_args
;
102 /* The name under which Emacs was invoked, with any leading directory
104 Lisp_Object Vinvocation_name
;
106 /* The directory name from which Emacs was invoked. */
107 Lisp_Object Vinvocation_directory
;
109 /* The directory name in which to find subdirs such as lisp and etc.
110 nil means get them only from PATH_LOADSEARCH. */
111 Lisp_Object Vinstallation_directory
;
113 /* Hook run by `kill-emacs' before it does really anything. */
114 Lisp_Object Vkill_emacs_hook
;
116 /* An empty lisp string. To avoid having to build any other. */
117 Lisp_Object empty_string
;
120 /* Hooks for signal USR1 and USR2 handling. */
121 Lisp_Object Vsignal_USR1_hook
;
123 Lisp_Object Vsignal_USR2_hook
;
127 /* Search path separator. */
128 Lisp_Object Vpath_separator
;
130 /* Set nonzero after Emacs has started up the first time.
131 Prevents reinitialization of the Lisp world and keymaps
132 on subsequent starts. */
135 #ifdef DOUG_LEA_MALLOC
136 /* Preserves a pointer to the memory allocated that copies that
137 static data inside glibc's malloc. */
138 void *malloc_state_ptr
;
139 /* From glibc, a routine that returns a copy of the malloc internal state. */
140 extern void *malloc_get_state ();
141 /* From glibc, a routine that overwrites the malloc internal state. */
142 extern void malloc_set_state ();
143 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
144 dumping. Used to work around a bug in glibc's malloc. */
145 int malloc_using_checking
;
148 /* Variable whose value is symbol giving operating system type. */
149 Lisp_Object Vsystem_type
;
151 /* Variable whose value is string giving configuration built for. */
152 Lisp_Object Vsystem_configuration
;
154 /* Variable whose value is string giving configuration options,
155 for use when reporting bugs. */
156 Lisp_Object Vsystem_configuration_options
;
158 Lisp_Object Qfile_name_handler_alist
;
160 /* Current and previous system locales for messages and time. */
161 Lisp_Object Vsystem_messages_locale
;
162 Lisp_Object Vprevious_system_messages_locale
;
163 Lisp_Object Vsystem_time_locale
;
164 Lisp_Object Vprevious_system_time_locale
;
166 /* If non-zero, emacs should not attempt to use a window-specific code,
167 but instead should use the virtual terminal under which it was started. */
168 int inhibit_window_system
;
170 /* If nonzero, set Emacs to run at this priority. This is also used
171 in child_setup and sys_suspend to make sure subshells run at normal
172 priority; those functions have their own extern declaration. */
173 EMACS_INT emacs_priority
;
175 /* If non-zero, a filter or a sentinel is running. Tested to save the match
176 data on the first attempt to change it inside asynchronous code. */
177 int running_asynch_code
;
181 extern int inherited_pgroup
;
184 #ifdef HAVE_X_WINDOWS
185 /* If non-zero, -d was specified, meaning we're using some window system. */
189 /* An address near the bottom of the stack.
190 Tells GC how to save a copy of the stack. */
193 #ifdef HAVE_WINDOW_SYSTEM
194 extern Lisp_Object Vwindow_system
;
195 #endif /* HAVE_WINDOW_SYSTEM */
197 extern Lisp_Object Vauto_save_list_file_name
;
199 #ifdef USG_SHARED_LIBRARIES
200 /* If nonzero, this is the place to put the end of the writable segment
203 unsigned int bss_end
= 0;
206 /* Nonzero means running Emacs without interactive terminal. */
210 /* Value of Lisp variable `noninteractive'.
211 Normally same as C variable `noninteractive'
212 but nothing terrible happens if user sets this one. */
216 /* Save argv and argc. */
220 static void sort_args ();
221 void syms_of_emacs ();
224 Usage: %s [OPTION-OR-FILENAME]...\n\
226 Run Emacs, the extensible, customizable, self-documenting real-time\n\
227 display editor. The recommended way to start Emacs for normal editing\n\
228 is with no options at all.\n\
230 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
231 read the main documentation for these command-line arguments.\n\
233 Initialization options:\n\
235 --batch do not do interactive display; implies -q\n\
236 --debug-init enable Emacs Lisp debugger for init file\n\
237 --display, -d DISPLAY use X server DISPLAY\n\
238 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
239 --no-desktop do not load a saved desktop\n\
240 --no-init-file, -q load neither ~/.emacs nor default.el\n\
241 --no-shared-memory, -nl do not use shared memory\n\
242 --no-site-file do not load site-start.el\n\
243 --no-splash do not display a splash screen on startup\n\
244 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
245 --script FILE run FILE as an Emacs Lisp script\n\
246 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
247 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
252 FILE visit FILE using find-file\n\
253 +LINE FILE visit FILE using find-file, then go to line LINE\n\
254 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
256 --directory, -L DIR add DIR to variable load-path\n\
257 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
258 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
259 --file FILE visit FILE using find-file\n\
260 --find-file FILE visit FILE using find-file\n\
261 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
262 --insert FILE insert contents of FILE into current buffer\n\
263 --kill exit without asking for confirmation\n\
264 --load, -l FILE load Emacs Lisp FILE using the load function\n\
265 --visit FILE visit FILE using find-file\n\
271 --background-color, -bg COLOR window background color\n\
272 --border-color, -bd COLOR main border color\n\
273 --border-width, -bw WIDTH width of main border\n\
274 --color MODE color mode for character terminals;\n\
275 MODE defaults to `auto', and can also\n\
276 be `never', `auto', `always',\n\
277 or a mode name like `ansi8'\n\
278 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
279 --font, -fn FONT default font; must be fixed-width\n\
280 --foreground-color, -fg COLOR window foreground color\n\
281 --fullheight, -fh make the first frame high as the screen\n\
282 --fullscreen, -fs make first frame fullscreen\n\
283 --fullwidth, -fw make the first frame wide as the screen\n\
284 --geometry, -g GEOMETRY window geometry\n\
285 --horizontal-scroll-bars, -hb enable horizontal scroll bars\n\
286 --icon-type, -i use picture of gnu for Emacs icon\n\
287 --iconic start Emacs in iconified state\n\
288 --internal-border, -ib WIDTH width between text and main border\n\
289 --line-spacing, -lsp PIXELS additional space to put between lines\n\
290 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
291 --name NAME title for initial Emacs frame\n\
292 --reverse-video, -r, -rv switch foreground and background\n\
293 --title, -T TITLE title for initial Emacs frame\n\
294 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
295 --xrm XRESOURCES set additional X resources\n\
296 --help display this help and exit\n\
297 --version output version information and exit\n\
299 You can generally also specify long option names with a single -; for\n\
300 example, -batch as well as --batch. You can use any unambiguous\n\
301 abbreviation for a --option.\n\
303 Various environment variables and window system resources also affect\n\
304 Emacs' operation. See the main documentation.\n\
308 Report bugs to %s. First, please see the Bugs\n\
309 section of the Emacs manual or the file BUGS.\n"
312 /* Signal code for the fatal signal that was received. */
313 int fatal_error_code
;
315 /* Nonzero if handling a fatal error already. */
316 int fatal_error_in_progress
;
318 /* If non-null, call this function from fatal_error_signal before
319 committing suicide. */
321 void (*fatal_error_signal_hook
) P_ ((void));
326 handle_USR1_signal (sig
)
329 struct input_event buf
;
331 bzero (&buf
, sizeof buf
);
332 buf
.kind
= USER_SIGNAL_EVENT
;
333 buf
.frame_or_window
= selected_frame
;
335 kbd_buffer_store_event (&buf
);
341 handle_USR2_signal (sig
)
344 struct input_event buf
;
346 bzero (&buf
, sizeof buf
);
347 buf
.kind
= USER_SIGNAL_EVENT
;
349 buf
.frame_or_window
= selected_frame
;
351 kbd_buffer_store_event (&buf
);
355 /* Handle bus errors, invalid instruction, etc. */
357 fatal_error_signal (sig
)
360 fatal_error_code
= sig
;
361 signal (sig
, SIG_DFL
);
363 TOTALLY_UNBLOCK_INPUT
;
365 /* If fatal error occurs in code below, avoid infinite recursion. */
366 if (! fatal_error_in_progress
)
368 fatal_error_in_progress
= 1;
370 shut_down_emacs (sig
, 0, Qnil
);
374 LIB$
STOP (SS$_ABORT
);
376 /* Signal the same code; this time it will really be fatal.
377 Remember that since we're in a signal handler, the signal we're
378 going to send is probably blocked, so we have to unblock it if we
379 want to really receive it. */
381 sigunblock (sigmask (fatal_error_code
));
384 if (fatal_error_signal_hook
)
385 fatal_error_signal_hook ();
387 kill (getpid (), fatal_error_code
);
393 /* Handler for SIGDANGER. */
395 memory_warning_signal (sig
)
398 signal (sig
, memory_warning_signal
);
400 malloc_warning ("Operating system warns that virtual memory is running low.\n");
402 /* It might be unsafe to call do_auto_save now. */
403 force_auto_save_soon ();
407 /* We define abort, rather than using it from the library,
408 so that GDB can return from a breakpoint here.
409 MSDOS has its own definition in msdos.c. */
411 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
413 #ifndef ABORT_RETURN_TYPE
414 #define ABORT_RETURN_TYPE void
420 kill (getpid (), SIGABRT
);
421 /* This shouldn't be executed, but it prevents a warning. */
427 /* Code for dealing with Lisp access to the Unix command line. */
430 init_cmdargs (argc
, argv
, skip_args
)
436 Lisp_Object name
, dir
, tem
;
437 int count
= SPECPDL_INDEX ();
438 Lisp_Object raw_name
;
443 raw_name
= build_string (argv
[0]);
445 /* Add /: to the front of the name
446 if it would otherwise be treated as magic. */
447 tem
= Ffind_file_name_handler (raw_name
, Qt
);
449 raw_name
= concat2 (build_string ("/:"), raw_name
);
451 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
452 Vinvocation_directory
= Ffile_name_directory (raw_name
);
454 /* If we got no directory in argv[0], search PATH to find where
455 Emacs actually came from. */
456 if (NILP (Vinvocation_directory
))
459 int yes
= openp (Vexec_path
, Vinvocation_name
,
460 Vexec_suffixes
, &found
, make_number (X_OK
));
463 /* Add /: to the front of the name
464 if it would otherwise be treated as magic. */
465 tem
= Ffind_file_name_handler (found
, Qt
);
467 found
= concat2 (build_string ("/:"), found
);
468 Vinvocation_directory
= Ffile_name_directory (found
);
472 if (!NILP (Vinvocation_directory
)
473 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
474 /* Emacs was started with relative path, like ./emacs.
476 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
478 Vinstallation_directory
= Qnil
;
480 if (!NILP (Vinvocation_directory
))
482 dir
= Vinvocation_directory
;
483 name
= Fexpand_file_name (Vinvocation_name
, dir
);
486 Lisp_Object tem
, lib_src_exists
;
487 Lisp_Object etc_exists
, info_exists
;
489 /* See if dir contains subdirs for use by Emacs.
490 Check for the ones that would exist in a build directory,
491 not including lisp and info. */
492 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
493 lib_src_exists
= Ffile_exists_p (tem
);
496 /* MSDOS installations frequently remove lib-src, but we still
497 must set installation-directory, or else info won't find
498 its files (it uses the value of installation-directory). */
499 tem
= Fexpand_file_name (build_string ("info"), dir
);
500 info_exists
= Ffile_exists_p (tem
);
505 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
507 tem
= Fexpand_file_name (build_string ("etc"), dir
);
508 etc_exists
= Ffile_exists_p (tem
);
509 if (!NILP (etc_exists
))
511 Vinstallation_directory
512 = Ffile_name_as_directory (dir
);
517 /* See if dir's parent contains those subdirs. */
518 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
519 lib_src_exists
= Ffile_exists_p (tem
);
523 /* See the MSDOS commentary above. */
524 tem
= Fexpand_file_name (build_string ("../info"), dir
);
525 info_exists
= Ffile_exists_p (tem
);
530 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
532 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
533 etc_exists
= Ffile_exists_p (tem
);
534 if (!NILP (etc_exists
))
536 tem
= Fexpand_file_name (build_string (".."), dir
);
537 Vinstallation_directory
538 = Ffile_name_as_directory (tem
);
543 /* If the Emacs executable is actually a link,
544 next try the dir that the link points into. */
545 tem
= Ffile_symlink_p (name
);
548 name
= Fexpand_file_name (tem
, dir
);
549 dir
= Ffile_name_directory (name
);
556 Vcommand_line_args
= Qnil
;
558 for (i
= argc
- 1; i
>= 0; i
--)
560 if (i
== 0 || i
> skip_args
)
562 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
565 unbind_to (count
, Qnil
);
568 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
569 doc
: /* Return the program name that was used to run Emacs.
570 Any directory names are omitted. */)
573 return Fcopy_sequence (Vinvocation_name
);
576 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
578 doc
: /* Return the directory name in which the Emacs executable was located. */)
581 return Fcopy_sequence (Vinvocation_directory
);
586 #ifdef LINK_CRTL_SHARE
587 #ifdef SHARABLE_LIB_BUG
588 extern noshare
char **environ
;
589 #endif /* SHARABLE_LIB_BUG */
590 #endif /* LINK_CRTL_SHARE */
594 /* A valid but unlikely value for the TZ environment value.
595 It is OK (though a bit slower) if the user actually chooses this value. */
596 static char dump_tz
[] = "UtC0";
599 #ifndef ORDINARY_LINK
600 /* We don't include crtbegin.o and crtend.o in the link,
601 so these functions and variables might be missed.
602 Provide dummy definitions to avoid error.
603 (We don't have any real constructors or destructors.) */
605 #ifndef GCC_CTORS_IN_LIBC
606 void __do_global_ctors ()
608 void __do_global_ctors_aux ()
610 void __do_global_dtors ()
612 /* GNU/Linux has a bug in its library; avoid an error. */
614 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
616 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
617 #endif /* GCC_CTORS_IN_LIBC */
620 #endif /* __GNUC__ */
621 #endif /* ORDINARY_LINK */
623 /* Test whether the next argument in ARGV matches SSTR or a prefix of
624 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
625 (the argument is supposed to have a value) store in *VALPTR either
626 the next argument or the portion of this one after the equal sign.
627 ARGV is read starting at position *SKIPPTR; this index is advanced
628 by the number of arguments used.
630 Too bad we can't just use getopt for all of this, but we don't have
631 enough information to do it right. */
634 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
647 /* Don't access argv[argc]; give up in advance. */
648 if (argc
<= *skipptr
+ 1)
651 arg
= argv
[*skipptr
+1];
654 if (strcmp (arg
, sstr
) == 0)
658 *valptr
= argv
[*skipptr
+2];
665 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
666 ? p
- arg
: strlen (arg
));
667 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
669 else if (valptr
== NULL
)
680 else if (argv
[*skipptr
+2] != NULL
)
682 *valptr
= argv
[*skipptr
+2];
692 #ifdef DOUG_LEA_MALLOC
694 /* malloc can be invoked even before main (e.g. by the dynamic
695 linker), so the dumped malloc state must be restored as early as
696 possible using this special hook. */
699 malloc_initialize_hook ()
702 extern char **environ
;
707 if (!malloc_using_checking
)
708 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
709 ignored if the heap to be restored was constructed without
710 malloc checking. Can't use unsetenv, since that calls malloc. */
714 for (p
= environ
; p
&& *p
; p
++)
715 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
724 malloc_set_state (malloc_state_ptr
);
725 free (malloc_state_ptr
);
728 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
731 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
733 #endif /* DOUG_LEA_MALLOC */
736 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
737 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
739 /* This function is used to determine an address to which bug report should
743 bug_reporting_address ()
749 temp
= Fsymbol_value (intern ("emacs-version"));
751 /* When `emacs-version' is invalid, use normal address. */
753 return REPORT_EMACS_BUG_ADDRESS
;
755 string
= SDATA (temp
);
757 /* Count dots in `emacs-version'. */
765 /* When `emacs-version' has at least three dots, it is development or
766 pretest version of Emacs. */
767 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
787 char stack_bottom_variable
;
788 int do_initial_setlocale
;
793 #ifdef HAVE_SETRLIMIT
800 extern Lisp_Object
*stack_base
;
804 #ifdef LINUX_SBRK_BUG
808 #ifdef RUN_TIME_REMAP
810 run_time_remap (argv
[0]);
815 unexec_init_emacs_zone ();
818 sort_args (argc
, argv
);
820 while (argv
[argc
]) argc
++;
822 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
823 /* We don't know the version number unless this is a dumped Emacs.
824 So ignore --version otherwise. */
828 tem
= Fsymbol_value (intern ("emacs-version"));
831 fprintf (stderr
, "Invalid value of `emacs-version'\n");
836 printf ("GNU Emacs %s\n", SDATA (tem
));
837 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
838 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
839 printf ("You may redistribute copies of Emacs\n");
840 printf ("under the terms of the GNU General Public License.\n");
841 printf ("For more information about these matters, ");
842 printf ("see the file named COPYING.\n");
847 /* Map in shared memory, if we are using that. */
849 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
852 /* The shared memory was just restored, which clobbered this. */
858 /* The shared memory was just restored, which clobbered this. */
865 extern int malloc_cookie
;
866 /* This helps out unexnext.c. */
868 if (malloc_jumpstart (malloc_cookie
) != 0)
869 printf ("malloc jumpstart failed!\n");
874 /* Skip process serial number passed in the form -psn_x_y as
875 command-line argument. */
876 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
881 /* If -map specified, map the data file in. */
884 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
888 #ifdef LINK_CRTL_SHARE
889 #ifdef SHARABLE_LIB_BUG
890 /* Bletcherous shared libraries! */
892 stdin
= fdopen (0, "r");
894 stdout
= fdopen (1, "w");
896 stderr
= fdopen (2, "w");
899 #endif /* SHARABLE_LIB_BUG */
900 #endif /* LINK_CRTL_SHARE */
903 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
904 /* Extend the stack space available.
905 Don't do that if dumping, since some systems (e.g. DJGPP)
906 might define a smaller stack limit at that time. */
909 && (!noninteractive
|| initialized
)
911 && !getrlimit (RLIMIT_STACK
, &rlim
))
914 extern int re_max_failures
;
915 /* Approximate the amount regex.c needs per unit of re_max_failures. */
916 int ratio
= 20 * sizeof (char *);
917 /* Then add 33% to cover the size of the smaller stacks that regex.c
918 successively allocates and discards, on its way to the maximum. */
920 /* Add in some extra to cover
921 what we're likely to use for other reasons. */
922 newlim
= re_max_failures
* ratio
+ 200000;
924 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
925 stack allocation routine for new process that the allocation
926 fails if stack limit is not on page boundary. So, round up the
927 new limit to page boundary. */
928 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
930 if (newlim
> rlim
.rlim_max
)
932 newlim
= rlim
.rlim_max
;
933 /* Don't let regex.c overflow the stack we have. */
934 re_max_failures
= (newlim
- 200000) / ratio
;
936 if (rlim
.rlim_cur
< newlim
)
937 rlim
.rlim_cur
= newlim
;
939 setrlimit (RLIMIT_STACK
, &rlim
);
941 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
943 /* Record (approximately) where the stack begins. */
944 stack_bottom
= &stack_bottom_variable
;
946 #ifdef USG_SHARED_LIBRARIES
948 brk ((void *)bss_end
);
953 #ifndef SYSTEM_MALLOC
954 /* Arrange to get warning messages as memory fills up. */
955 memory_warnings (0, malloc_warning
);
957 /* Call malloc at least once, to run the initial __malloc_hook.
958 Also call realloc and free for consistency. */
959 free (realloc (malloc (4), 4));
961 /* Arrange to disable interrupt input inside malloc etc. */
962 uninterrupt_malloc ();
963 #endif /* not SYSTEM_MALLOC */
965 #if defined (MSDOS) || defined (WINDOWSNT)
966 /* We do all file input/output as binary files. When we need to translate
967 newlines, we do that manually. */
969 #endif /* MSDOS || WINDOWSNT */
973 if (!isatty (fileno (stdin
)))
974 setmode (fileno (stdin
), O_BINARY
);
975 if (!isatty (fileno (stdout
)))
978 setmode (fileno (stdout
), O_BINARY
);
980 #else /* not __DJGPP__ >= 2 */
981 (stdin
)->_flag
&= ~_IOTEXT
;
982 (stdout
)->_flag
&= ~_IOTEXT
;
983 (stderr
)->_flag
&= ~_IOTEXT
;
984 #endif /* not __DJGPP__ >= 2 */
987 #ifdef SET_EMACS_PRIORITY
989 nice (emacs_priority
);
991 #endif /* SET_EMACS_PRIORITY */
993 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
994 The build procedure uses this while dumping, to ensure that the
995 dumped Emacs does not have its system locale tables initialized,
996 as that might cause screwups when the dumped Emacs starts up. */
998 char *lc_all
= getenv ("LC_ALL");
999 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1002 /* Set locale now, so that initial error messages are localized properly.
1003 fixup_locale must wait until later, since it builds strings. */
1004 if (do_initial_setlocale
)
1005 setlocale (LC_ALL
, "");
1007 #ifdef EXTRA_INITIALIZE
1011 inhibit_window_system
= 0;
1013 /* Handle the -t switch, which specifies filename to use as terminal. */
1017 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1022 result
= emacs_open (term
, O_RDWR
, 0);
1025 char *errstring
= strerror (errno
);
1026 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1032 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1035 fprintf (stderr
, "Using %s\n", term
);
1036 #ifdef HAVE_WINDOW_SYSTEM
1037 inhibit_window_system
= 1; /* -t => -nw */
1044 /* Command line option --no-windows is deprecated and thus not mentioned
1045 in the manual and usage informations. */
1046 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1047 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1048 inhibit_window_system
= 1;
1050 /* Handle the -batch switch, which means don't do interactive display. */
1052 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1054 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1056 noninteractive
= 1; /* Set batch mode. */
1057 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1058 handled in proper sequence. */
1059 argv
[skip_args
- 1] = "-l";
1061 sort_args (argc
, argv
);
1064 /* Handle the --help option, which gives a usage message. */
1065 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1067 printf (USAGE1
, argv
[0]);
1069 printf (USAGE3
, bug_reporting_address ());
1073 if (! noninteractive
)
1078 inherited_pgroup
= EMACS_GETPGRP (0);
1079 setpgrp (0, getpid ());
1082 #if defined (USG5) && defined (INTERRUPT_INPUT)
1090 /* Don't catch SIGHUP if dumping. */
1097 sigblock (sigmask (SIGHUP
));
1098 /* In --batch mode, don't catch SIGHUP if already ignored.
1099 That makes nohup work. */
1100 if (! noninteractive
1101 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1102 signal (SIGHUP
, fatal_error_signal
);
1103 sigunblock (sigmask (SIGHUP
));
1108 ! noninteractive
|| initialized
1114 /* Don't catch these signals in batch mode if dumping.
1115 On some machines, this sets static data that would make
1116 signal fail to work right when the dumped Emacs is run. */
1117 signal (SIGQUIT
, fatal_error_signal
);
1118 signal (SIGILL
, fatal_error_signal
);
1119 signal (SIGTRAP
, fatal_error_signal
);
1121 signal (SIGUSR1
, handle_USR1_signal
);
1123 signal (SIGUSR2
, handle_USR2_signal
);
1127 signal (SIGABRT
, fatal_error_signal
);
1130 signal (SIGHWE
, fatal_error_signal
);
1133 signal (SIGPRE
, fatal_error_signal
);
1136 signal (SIGORE
, fatal_error_signal
);
1139 signal (SIGUME
, fatal_error_signal
);
1142 signal (SIGDLK
, fatal_error_signal
);
1145 signal (SIGCPULIM
, fatal_error_signal
);
1148 /* This is missing on some systems - OS/2, for example. */
1149 signal (SIGIOT
, fatal_error_signal
);
1152 signal (SIGEMT
, fatal_error_signal
);
1154 signal (SIGFPE
, fatal_error_signal
);
1156 signal (SIGBUS
, fatal_error_signal
);
1158 signal (SIGSEGV
, fatal_error_signal
);
1160 signal (SIGSYS
, fatal_error_signal
);
1162 signal (SIGTERM
, fatal_error_signal
);
1164 signal (SIGXCPU
, fatal_error_signal
);
1167 signal (SIGXFSZ
, fatal_error_signal
);
1168 #endif /* SIGXFSZ */
1171 /* This just means available memory is getting low. */
1172 signal (SIGDANGER
, memory_warning_signal
);
1176 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1177 signal (SIGXCPU
, fatal_error_signal
);
1179 signal (SIGIOINT
, fatal_error_signal
);
1181 signal (SIGGRANT
, fatal_error_signal
);
1182 signal (SIGRETRACT
, fatal_error_signal
);
1183 signal (SIGSOUND
, fatal_error_signal
);
1184 signal (SIGMSG
, fatal_error_signal
);
1188 noninteractive1
= noninteractive
;
1190 /* Perform basic initializations (not merely interning symbols). */
1197 init_charset_once ();
1198 init_coding_once ();
1199 init_syntax_once (); /* Create standard syntax table. */
1200 init_category_once (); /* Create standard category table. */
1201 /* Must be done before init_buffer. */
1202 init_casetab_once ();
1203 init_buffer_once (); /* Create buffer table and some buffers. */
1204 init_minibuf_once (); /* Create list of minibuffers. */
1205 /* Must precede init_window_once. */
1207 /* Call syms_of_xfaces before init_window_once because that
1208 function creates Vterminal_frame. Termcap frames now use
1209 faces, and the face implementation uses some symbols as
1212 /* Call syms_of_keyboard before init_window_once because
1213 keyboard sets up symbols that include some face names that
1214 the X support will want to use. This can happen when
1215 CANNOT_DUMP is defined. */
1216 syms_of_keyboard ();
1219 /* init_window_once calls make_terminal_frame which on Mac OS
1220 creates a full-fledge output_mac type frame. This does not
1221 work correctly before syms_of_textprop, syms_of_macfns,
1222 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1223 syms_of_frame, mac_initialize, and init_keyboard have already
1225 syms_of_textprop ();
1239 init_window_once (); /* Init the window system. */
1240 init_fileio_once (); /* Must precede any path manipulation. */
1241 #ifdef HAVE_WINDOW_SYSTEM
1242 init_fringe_once (); /* Swap bitmaps if necessary. */
1243 #endif /* HAVE_WINDOW_SYSTEM */
1248 if (do_initial_setlocale
)
1251 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1252 Vsystem_time_locale
= Vprevious_system_time_locale
;
1257 #ifdef CLASH_DETECTION
1261 running_asynch_code
= 0;
1263 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1264 but not while dumping. */
1267 int inhibit_unibyte
= 0;
1269 /* --multibyte overrides EMACS_UNIBYTE. */
1270 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1271 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1272 /* Ignore EMACS_UNIBYTE before dumping. */
1273 || (!initialized
&& noninteractive
))
1274 inhibit_unibyte
= 1;
1276 /* --unibyte requests that we set up to do everything with single-byte
1277 buffers and strings. We need to handle this before calling
1278 init_lread, init_editfns and other places that generate Lisp strings
1279 from text in the environment. */
1280 /* Actually this shouldn't be needed as of 20.4 in a generally
1281 unibyte environment. As handa says, environment values
1282 aren't now decoded; also existing buffers are now made
1283 unibyte during startup if .emacs sets unibyte. Tested with
1284 8-bit data in environment variables and /etc/passwd, setting
1285 unibyte and Latin-1 in .emacs. -- Dave Love */
1286 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1287 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1288 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1290 Lisp_Object old_log_max
;
1291 Lisp_Object symbol
, tail
;
1293 symbol
= intern ("default-enable-multibyte-characters");
1294 Fset (symbol
, Qnil
);
1298 /* Erase pre-dump messages in *Messages* now so no abort. */
1299 old_log_max
= Vmessage_log_max
;
1300 XSETFASTINT (Vmessage_log_max
, 0);
1301 message_dolog ("", 0, 1, 0);
1302 Vmessage_log_max
= old_log_max
;
1305 for (tail
= Vbuffer_alist
; CONSP (tail
);
1310 buffer
= Fcdr (XCAR (tail
));
1311 /* Verify that all buffers are empty now, as they
1313 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1315 /* It is safe to do this crudely in an empty buffer. */
1316 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1322 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1325 #ifdef HAVE_X_WINDOWS
1326 /* Stupid kludge to catch command-line display spec. We can't
1327 handle this argument entirely in window system dependent code
1328 because we don't even know which window system dependent code
1329 to run until we've recognized this argument. */
1331 char *displayname
= 0;
1332 int count_before
= skip_args
;
1334 /* Skip any number of -d options, but only use the last one. */
1337 int count_before_this
= skip_args
;
1339 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1341 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1346 count_before
= count_before_this
;
1349 /* If we have the form --display=NAME,
1350 convert it into -d name.
1351 This requires inserting a new element into argv. */
1352 if (displayname
!= 0 && skip_args
- count_before
== 1)
1354 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1357 for (j
= 0; j
< count_before
+ 1; j
++)
1359 new[count_before
+ 1] = "-d";
1360 new[count_before
+ 2] = displayname
;
1361 for (j
= count_before
+ 2; j
<argc
; j
++)
1362 new[j
+ 1] = argv
[j
];
1366 /* Change --display to -d, when its arg is separate. */
1367 else if (displayname
!= 0 && skip_args
> count_before
1368 && argv
[count_before
+ 1][1] == '-')
1369 argv
[count_before
+ 1] = "-d";
1371 /* Don't actually discard this arg. */
1372 skip_args
= count_before
;
1376 /* argmatch must not be used after here,
1377 except when bulding temacs
1378 because the -d argument has not been skipped in skip_args. */
1381 /* Call early 'cause init_environment needs it. */
1383 /* Set defaults for several environment variables. */
1385 init_environment (argc
, argv
, skip_args
);
1392 /* Initialize environment from registry settings. */
1393 init_environment (argv
);
1394 init_ntproc (); /* must precede init_editfns. */
1399 init_mac_osx_environment ();
1402 /* egetenv is a pretty low-level facility, which may get called in
1403 many circumstances; it seems flimsy to put off initializing it
1404 until calling init_callproc. */
1405 set_process_environment ();
1406 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1407 if this is not done. Do it after set_process_environment so that we
1408 don't pollute Vprocess_environment. */
1409 /* Setting LANG here will defeat the startup locale processing... */
1414 init_buffer (); /* Init default directory of main buffer. */
1416 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1417 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1421 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1422 Lisp_Object old_log_max
;
1423 old_log_max
= Vmessage_log_max
;
1424 XSETFASTINT (Vmessage_log_max
, 0);
1425 message_dolog ("", 0, 1, 0);
1426 Vmessage_log_max
= old_log_max
;
1429 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1432 /* Intern the names of all standard functions and variables;
1433 define standard keys. */
1437 /* The basic levels of Lisp must come first. */
1438 /* And data must come first of all
1439 for the sake of symbols like error-message. */
1441 /* Called before init_window_once for Mac OS Classic. */
1449 syms_of_floatfns ();
1453 syms_of_bytecode ();
1455 syms_of_casefiddle ();
1457 syms_of_callproc ();
1458 syms_of_category ();
1460 /* Called before init_window_once for Mac OS Classic. */
1465 #ifndef NO_DIR_LIBRARY
1467 #endif /* not NO_DIR_LIBRARY */
1473 syms_of_coding (); /* This should be after syms_of_fileio. */
1474 #ifdef CLASH_DETECTION
1475 syms_of_filelock ();
1476 #endif /* CLASH_DETECTION */
1485 /* Called before init_window_once for Mac OS Classic. */
1496 /* Called before init_window_once for Mac OS Classic. */
1497 syms_of_textprop ();
1499 syms_of_composite ();
1505 #endif /* WINDOWSNT */
1508 #ifdef HAVE_WINDOW_SYSTEM
1510 #endif /* HAVE_WINDOW_SYSTEM */
1511 #ifdef HAVE_X_WINDOWS
1521 #endif /* HAVE_X_WINDOWS */
1525 /* Called before init_window_once for Mac OS Classic. */
1533 syms_of_w32select ();
1536 #endif /* HAVE_NTGUI */
1543 #endif /* HAVE_CARBON */
1553 keys_of_casefiddle ();
1556 keys_of_keyboard ();
1564 Initialization that must be done even if the global variable
1565 initialized is non zero
1568 globals_of_w32fns ();
1569 globals_of_w32menu ();
1570 #endif /* end #ifdef HAVE_NTGUI */
1573 if (!noninteractive
)
1576 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1578 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1581 /* Called before init_window_once for Mac OS Classic. */
1582 init_keyboard (); /* This too must precede init_sys_modes. */
1585 init_vmsproc (); /* And this too. */
1587 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1588 #if defined (HAVE_X_WINDOWS) || defined (WINDOWSNT)
1590 #endif /* HAVE_X_WINDOWS */
1593 #ifdef HAVE_WINDOW_SYSTEM
1595 #endif /* HAVE_WINDOW_SYSTEM */
1611 /* Handle -l loadup, args passed by Makefile. */
1612 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1613 Vtop_level
= Fcons (intern ("load"),
1614 Fcons (build_string (file
), Qnil
));
1615 /* Unless next switch is -nl, load "loadup.el" first thing. */
1617 Vtop_level
= Fcons (intern ("load"),
1618 Fcons (build_string ("loadup.el"), Qnil
));
1625 /* If the execution TZ happens to be the same as the dump TZ,
1626 change it to some other value and then change it back,
1627 to force the underlying implementation to reload the TZ info.
1628 This is needed on implementations that load TZ info from files,
1629 since the TZ file contents may differ between dump and execution. */
1630 char *tz
= getenv ("TZ");
1631 if (tz
&& !strcmp (tz
, dump_tz
))
1641 /* Set up for profiling. This is known to work on FreeBSD and
1642 GNU/Linux. It might work on some other systems too. Give it a
1643 try and tell us if it works on your system. To compile for
1644 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1645 #if defined (__FreeBSD__) || defined (__linux)
1649 extern void _mcleanup ();
1651 extern void safe_bcopy ();
1652 extern void dump_opcode_frequencies ();
1655 /* This uses safe_bcopy because that function comes first in the
1656 Emacs executable. It might be better to use something that
1657 gives the start of the text segment, but start_of_text is not
1658 defined on all systems now. */
1659 monstartup (safe_bcopy
, &etext
);
1668 #ifdef LOCALTIME_CACHE
1669 /* Some versions of localtime have a bug. They cache the value of the time
1670 zone rather than looking it up every time. Since localtime() is
1671 called to bolt the undumping time into the undumped emacs, this
1672 results in localtime ignoring the TZ environment variable.
1673 This flushes the new TZ value into localtime. */
1675 #endif /* defined (LOCALTIME_CACHE) */
1677 /* Enter editor command loop. This never returns. */
1683 /* Sort the args so we can find the most important ones
1684 at the beginning of argv. */
1686 /* First, here's a table of all the standard options. */
1688 struct standard_args
1696 struct standard_args standard_args
[] =
1698 { "-version", "--version", 150, 0 },
1700 { "-nl", "--no-shared-memory", 140, 0 },
1703 { "-map", "--map-data", 130, 0 },
1705 { "-t", "--terminal", 120, 1 },
1706 { "-nw", "--no-window-system", 110, 0 },
1707 { "-nw", "--no-windows", 110, 0 },
1708 { "-batch", "--batch", 100, 0 },
1709 { "-script", "--script", 100, 1 },
1710 { "-help", "--help", 90, 0 },
1711 { "-no-unibyte", "--no-unibyte", 83, 0 },
1712 { "-multibyte", "--multibyte", 82, 0 },
1713 { "-unibyte", "--unibyte", 81, 0 },
1714 { "-no-multibyte", "--no-multibyte", 80, 0 },
1715 { "-nl", "--no-loadup", 70, 0 },
1716 /* -d must come last before the options handled in startup.el. */
1717 { "-d", "--display", 60, 1 },
1718 { "-display", 0, 60, 1 },
1719 /* Now for the options handled in startup.el. */
1720 { "-q", "--no-init-file", 50, 0 },
1721 { "-no-init-file", 0, 50, 0 },
1722 { "-no-site-file", "--no-site-file", 40, 0 },
1723 { "-no-splash", "--no-splash", 40, 0 },
1724 { "-u", "--user", 30, 1 },
1725 { "-user", 0, 30, 1 },
1726 { "-debug-init", "--debug-init", 20, 0 },
1727 { "-i", "--icon-type", 15, 0 },
1728 { "-itype", 0, 15, 0 },
1729 { "-iconic", "--iconic", 15, 0 },
1730 { "-bg", "--background-color", 10, 1 },
1731 { "-background", 0, 10, 1 },
1732 { "-fg", "--foreground-color", 10, 1 },
1733 { "-foreground", 0, 10, 1 },
1734 { "-bd", "--border-color", 10, 1 },
1735 { "-bw", "--border-width", 10, 1 },
1736 { "-ib", "--internal-border", 10, 1 },
1737 { "-ms", "--mouse-color", 10, 1 },
1738 { "-cr", "--cursor-color", 10, 1 },
1739 { "-fn", "--font", 10, 1 },
1740 { "-font", 0, 10, 1 },
1741 { "-fs", "--fullscreen", 10, 0 },
1742 { "-fw", "--fullwidth", 10, 0 },
1743 { "-fh", "--fullheight", 10, 0 },
1744 { "-g", "--geometry", 10, 1 },
1745 { "-geometry", 0, 10, 1 },
1746 { "-T", "--title", 10, 1 },
1747 { "-title", 0, 10, 1 },
1748 { "-name", "--name", 10, 1 },
1749 { "-xrm", "--xrm", 10, 1 },
1750 { "-r", "--reverse-video", 5, 0 },
1752 { "-reverse", 0, 5, 0 },
1753 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1754 { "-vb", "--vertical-scroll-bars", 5, 0 },
1755 { "-color", "--color", 5, 0},
1756 /* These have the same priority as ordinary file name args,
1757 so they are not reordered with respect to those. */
1758 { "-L", "--directory", 0, 1 },
1759 { "-directory", 0, 0, 1 },
1760 { "-l", "--load", 0, 1 },
1761 { "-load", 0, 0, 1 },
1762 { "-f", "--funcall", 0, 1 },
1763 { "-funcall", 0, 0, 1 },
1764 { "-eval", "--eval", 0, 1 },
1765 { "-execute", "--execute", 0, 1 },
1766 { "-find-file", "--find-file", 0, 1 },
1767 { "-visit", "--visit", 0, 1 },
1768 { "-file", "--file", 0, 1 },
1769 { "-insert", "--insert", 0, 1 },
1770 /* This should be processed after ordinary file name args and the like. */
1771 { "-kill", "--kill", -10, 0 },
1774 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1775 so that the highest priority ones come first.
1776 Do not change the order of elements of equal priority.
1777 If an option takes an argument, keep it and its argument together.
1779 If an option that takes no argument appears more
1780 than once, eliminate all but one copy of it. */
1783 sort_args (argc
, argv
)
1787 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1788 /* For each element of argv,
1789 the corresponding element of options is:
1790 0 for an option that takes no arguments,
1791 1 for an option that takes one argument, etc.
1792 -1 for an ordinary non-option argument. */
1793 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1794 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1796 int incoming_used
= 1;
1800 /* Categorize all the options,
1801 and figure out which argv elts are option arguments. */
1802 for (from
= 1; from
< argc
; from
++)
1806 if (argv
[from
][0] == '-')
1811 /* If we have found "--", don't consider
1812 any more arguments as options. */
1813 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1815 /* Leave the "--", and everything following it, at the end. */
1816 for (; from
< argc
; from
++)
1818 priority
[from
] = -100;
1824 /* Look for a match with a known old-fashioned option. */
1825 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1826 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1828 options
[from
] = standard_args
[i
].nargs
;
1829 priority
[from
] = standard_args
[i
].priority
;
1830 if (from
+ standard_args
[i
].nargs
>= argc
)
1831 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1832 from
+= standard_args
[i
].nargs
;
1836 /* Look for a match with a known long option.
1837 MATCH is -1 if no match so far, -2 if two or more matches so far,
1838 >= 0 (the table index of the match) if just one match so far. */
1839 if (argv
[from
][1] == '-')
1842 thislen
= strlen (argv
[from
]);
1843 equals
= index (argv
[from
], '=');
1845 thislen
= equals
- argv
[from
];
1848 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1849 if (standard_args
[i
].longname
1850 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1859 /* If we found exactly one match, use that. */
1862 options
[from
] = standard_args
[match
].nargs
;
1863 priority
[from
] = standard_args
[match
].priority
;
1864 /* If --OPTION=VALUE syntax is used,
1865 this option uses just one argv element. */
1868 if (from
+ options
[from
] >= argc
)
1869 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1870 from
+= options
[from
];
1877 /* Copy the arguments, in order of decreasing priority, to NEW. */
1879 while (incoming_used
< argc
)
1882 int best_priority
= -9999;
1884 /* Find the highest priority remaining option.
1885 If several have equal priority, take the first of them. */
1886 for (from
= 1; from
< argc
; from
++)
1888 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1890 best_priority
= priority
[from
];
1893 /* Skip option arguments--they are tied to the options. */
1894 if (options
[from
] > 0)
1895 from
+= options
[from
];
1901 /* Copy the highest priority remaining option, with its args, to NEW.
1902 Unless it is a duplicate of the previous one. */
1903 if (! (options
[best
] == 0
1904 && ! strcmp (new[to
- 1], argv
[best
])))
1906 new[to
++] = argv
[best
];
1907 for (i
= 0; i
< options
[best
]; i
++)
1908 new[to
++] = argv
[best
+ i
+ 1];
1911 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1913 /* Clear out this option in ARGV. */
1915 for (i
= 0; i
< options
[best
]; i
++)
1916 argv
[best
+ i
+ 1] = 0;
1919 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1923 bcopy (new, argv
, sizeof (char *) * argc
);
1930 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1931 doc
: /* Exit the Emacs job and kill it.
1932 If ARG is an integer, return ARG as the exit program code.
1933 If ARG is a string, stuff it as keyboard input.
1935 The value of `kill-emacs-hook', if not void,
1936 is a list of functions (of no args),
1937 all of which are called before Emacs is actually killed. */)
1941 struct gcpro gcpro1
;
1948 if (!NILP (Vrun_hooks
) && !noninteractive
)
1949 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1953 /* Is it really necessary to do this deassign
1954 when we are going to exit anyway? */
1959 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1961 /* If we have an auto-save list file,
1962 kill it because we are exiting Emacs deliberately (not crashing).
1963 Do it after shut_down_emacs, which does an auto-save. */
1964 if (STRINGP (Vauto_save_list_file_name
))
1965 unlink (SDATA (Vauto_save_list_file_name
));
1967 exit (INTEGERP (arg
) ? XINT (arg
)
1978 /* Perform an orderly shutdown of Emacs. Autosave any modified
1979 buffers, kill any child processes, clean up the terminal modes (if
1980 we're in the foreground), and other stuff like that. Don't perform
1981 any redisplay; this may be called when Emacs is shutting down in
1982 the background, or after its X connection has died.
1984 If SIG is a signal number, print a message for it.
1986 This is called by fatal signal handlers, X protocol error handlers,
1990 shut_down_emacs (sig
, no_x
, stuff
)
1994 /* Prevent running of hooks from now on. */
1997 /* If we are controlling the terminal, reset terminal modes. */
1998 #ifdef EMACS_HAVE_TTY_PGRP
2000 int pgrp
= EMACS_GETPGRP (0);
2003 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2008 if (sig
&& sig
!= SIGTERM
)
2009 fprintf (stderr
, "Fatal error (%d)", sig
);
2017 stuff_buffered_input (stuff
);
2019 kill_buffer_processes (Qnil
);
2020 Fdo_auto_save (Qt
, Qnil
);
2022 #ifdef CLASH_DETECTION
2023 unlock_all_files ();
2027 kill_vms_processes ();
2030 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2031 #ifdef HAVE_X_WINDOWS
2032 /* It's not safe to call intern here. Maybe we are crashing. */
2033 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2034 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2035 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2037 Fx_close_current_connection ();
2038 #endif /* HAVE_X_WINDOWS */
2042 /* There is a tendency for a SIGIO signal to arrive within exit,
2043 and cause a SIGHUP because the input descriptor is already closed. */
2045 signal (SIGIO
, SIG_IGN
);
2052 /* Do this only if terminating normally, we want glyph matrices
2053 etc. in a core dump. */
2054 if (sig
== 0 || sig
== SIGTERM
)
2056 check_glyph_memory ();
2057 check_message_stack ();
2071 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2072 doc
: /* Dump current state of Emacs into data file FILENAME.
2073 This function exists on systems that use HAVE_SHM. */)
2075 Lisp_Object filename
;
2077 extern char my_edata
[];
2081 CHECK_STRING (filename
);
2082 filename
= Fexpand_file_name (filename
, Qnil
);
2085 Vpurify_flag
= Qnil
;
2088 /* Tell malloc where start of impure now is. */
2089 /* Also arrange for warnings when nearly out of space. */
2090 #ifndef SYSTEM_MALLOC
2091 memory_warnings (my_edata
, malloc_warning
);
2093 map_out_data (SDATA (filename
));
2100 #else /* not HAVE_SHM */
2102 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2103 doc
: /* Dump current state of Emacs into executable file FILENAME.
2104 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2105 This is used in the file `loadup.el' when building Emacs.
2107 You must run Emacs in batch mode in order to dump it. */)
2109 Lisp_Object filename
, symfile
;
2111 extern char my_edata
[];
2114 int count
= SPECPDL_INDEX ();
2118 if (! noninteractive
)
2119 error ("Dumping Emacs works only in batch mode");
2121 /* Bind `command-line-processed' to nil before dumping,
2122 so that the dumped Emacs will process its command line
2123 and set up to work with X windows if appropriate. */
2124 symbol
= intern ("command-line-processed");
2125 specbind (symbol
, Qnil
);
2127 CHECK_STRING (filename
);
2128 filename
= Fexpand_file_name (filename
, Qnil
);
2129 if (!NILP (symfile
))
2131 CHECK_STRING (symfile
);
2132 if (SCHARS (symfile
))
2133 symfile
= Fexpand_file_name (symfile
, Qnil
);
2137 Vpurify_flag
= Qnil
;
2140 set_time_zone_rule (dump_tz
);
2141 #ifndef LOCALTIME_CACHE
2142 /* Force a tz reload, since set_time_zone_rule doesn't. */
2149 mapout_data (SDATA (filename
));
2151 /* Tell malloc where start of impure now is. */
2152 /* Also arrange for warnings when nearly out of space. */
2153 #ifndef SYSTEM_MALLOC
2155 /* On Windows, this was done before dumping, and that once suffices.
2156 Meanwhile, my_edata is not valid on Windows. */
2157 memory_warnings (my_edata
, malloc_warning
);
2158 #endif /* not WINDOWSNT */
2160 #ifdef DOUG_LEA_MALLOC
2161 malloc_state_ptr
= malloc_get_state ();
2164 #ifdef USE_MMAP_FOR_BUFFERS
2167 unexec (SDATA (filename
),
2168 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2169 #ifdef USE_MMAP_FOR_BUFFERS
2172 #ifdef DOUG_LEA_MALLOC
2173 free (malloc_state_ptr
);
2175 #endif /* not VMS */
2179 return unbind_to (count
, Qnil
);
2182 #endif /* not HAVE_SHM */
2184 #endif /* not CANNOT_DUMP */
2187 /* Recover from setlocale (LC_ALL, ""). */
2191 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2192 so that numbers are read and printed properly for Emacs Lisp. */
2193 setlocale (LC_NUMERIC
, "C");
2196 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2199 synchronize_locale (category
, plocale
, desired_locale
)
2201 Lisp_Object
*plocale
;
2202 Lisp_Object desired_locale
;
2204 if (! EQ (*plocale
, desired_locale
))
2206 *plocale
= desired_locale
;
2207 setlocale (category
, (STRINGP (desired_locale
)
2208 ? (char *)(SDATA (desired_locale
))
2213 /* Set system time locale to match Vsystem_time_locale, if possible. */
2215 synchronize_system_time_locale ()
2217 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2218 Vsystem_time_locale
);
2221 /* Set system messages locale to match Vsystem_messages_locale, if
2224 synchronize_system_messages_locale ()
2227 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2228 Vsystem_messages_locale
);
2231 #endif /* HAVE_SETLOCALE */
2238 decode_env_path (evarname
, defalt
)
2239 char *evarname
, *defalt
;
2241 register char *path
, *p
;
2242 Lisp_Object lpath
, element
, tem
;
2244 /* It's okay to use getenv here, because this function is only used
2245 to initialize variables when Emacs starts up, and isn't called
2248 path
= (char *) getenv (evarname
);
2254 /* Ensure values from the environment use the proper directory separator. */
2257 p
= alloca (strlen (path
) + 1);
2261 if ('/' == DIRECTORY_SEP
)
2262 dostounix_filename (path
);
2264 unixtodos_filename (path
);
2270 p
= index (path
, SEPCHAR
);
2271 if (!p
) p
= path
+ strlen (path
);
2272 element
= (p
- path
? make_string (path
, p
- path
)
2273 : build_string ("."));
2275 /* Add /: to the front of the name
2276 if it would otherwise be treated as magic. */
2277 tem
= Ffind_file_name_handler (element
, Qt
);
2279 /* However, if the handler says "I'm safe",
2280 don't bother adding /:. */
2284 prop
= Fget (tem
, intern ("safe-magic"));
2290 element
= concat2 (build_string ("/:"), element
);
2292 lpath
= Fcons (element
, lpath
);
2298 return Fnreverse (lpath
);
2304 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2305 staticpro (&Qfile_name_handler_alist
);
2309 defsubr (&Sdump_emacs_data
);
2311 defsubr (&Sdump_emacs
);
2315 defsubr (&Skill_emacs
);
2317 defsubr (&Sinvocation_name
);
2318 defsubr (&Sinvocation_directory
);
2320 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2321 doc
: /* Args passed by shell to Emacs, as a list of strings.
2322 Many arguments are deleted from the list as they are processed. */);
2324 DEFVAR_LISP ("system-type", &Vsystem_type
,
2325 doc
: /* Value is symbol indicating type of operating system you are using. */);
2326 Vsystem_type
= intern (SYSTEM_TYPE
);
2328 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2329 doc
: /* Value is string indicating configuration Emacs was built for.
2330 On MS-Windows, the value reflects the OS flavor and version on which
2331 Emacs is running. */);
2332 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2334 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2335 doc
: /* String containing the configuration options Emacs was built with. */);
2336 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2338 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2339 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2341 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2342 doc
: /* Hook to be run when kill-emacs is called.
2343 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2344 in other similar situations), functions placed on this hook should not
2345 expect to be able to interact with the user. To ask for confirmation,
2346 see `kill-emacs-query-functions' instead.
2348 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2349 Vkill_emacs_hook
= Qnil
;
2351 empty_string
= build_string ("");
2352 staticpro (&empty_string
);
2355 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2356 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2357 Vsignal_USR1_hook
= Qnil
;
2359 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2360 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2361 Vsignal_USR2_hook
= Qnil
;
2366 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2367 doc
: /* Priority for Emacs to run at.
2368 This value is effective only if set before Emacs is dumped,
2369 and only if the Emacs executable is installed with setuid to permit
2370 it to change priority. (Emacs sets its uid back to the real uid.)
2371 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2372 before you compile Emacs, to enable the code for this feature. */);
2375 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2376 doc
: /* The directory separator in search paths, as a string. */);
2379 Vpath_separator
= make_string (&c
, 1);
2382 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2383 doc
: /* The program name that was used to run Emacs.
2384 Any directory names are omitted. */);
2386 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2387 doc
: /* The directory in which the Emacs executable was found, to run it.
2388 The value is nil if that directory's name is not known. */);
2390 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2391 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2392 This is non-nil when we can't find those directories in their standard
2393 installed locations, but we can find them
2394 near where the Emacs executable was found. */);
2395 Vinstallation_directory
= Qnil
;
2397 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2398 doc
: /* System locale for messages. */);
2399 Vsystem_messages_locale
= Qnil
;
2401 DEFVAR_LISP ("previous-system-messages-locale",
2402 &Vprevious_system_messages_locale
,
2403 doc
: /* Most recently used system locale for messages. */);
2404 Vprevious_system_messages_locale
= Qnil
;
2406 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2407 doc
: /* System locale for time. */);
2408 Vsystem_time_locale
= Qnil
;
2410 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2411 doc
: /* Most recently used system locale for time. */);
2412 Vprevious_system_time_locale
= Qnil
;
2415 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2416 (do not change this comment) */