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>
45 #include "intervals.h"
50 #include "blockinput.h"
51 #include "syssignal.h"
53 #include "termhooks.h"
63 #include <sys/resource.h>
71 #if !defined (USG) || defined (BSD_PGRPS)
73 #define setpgrp setpgid
77 extern void malloc_warning
P_ ((char *));
78 extern void set_time_zone_rule
P_ ((char *));
80 extern char *index
P_ ((const char *, int));
83 /* Make these values available in GDB, which doesn't see macros. */
85 EMACS_INT gdb_valbits
= VALBITS
;
86 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
87 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
89 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
91 EMACS_INT gdb_data_seg_bits
= 0;
93 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
95 /* Command line args from shell, as list of strings. */
96 Lisp_Object Vcommand_line_args
;
98 /* The name under which Emacs was invoked, with any leading directory
100 Lisp_Object Vinvocation_name
;
102 /* The directory name from which Emacs was invoked. */
103 Lisp_Object Vinvocation_directory
;
105 /* The directory name in which to find subdirs such as lisp and etc.
106 nil means get them only from PATH_LOADSEARCH. */
107 Lisp_Object Vinstallation_directory
;
109 /* Hook run by `kill-emacs' before it does really anything. */
110 Lisp_Object Vkill_emacs_hook
;
112 /* An empty lisp string. To avoid having to build any other. */
113 Lisp_Object empty_string
;
116 /* Hooks for signal USR1 and USR2 handling. */
117 Lisp_Object Vsignal_USR1_hook
;
119 Lisp_Object Vsignal_USR2_hook
;
123 /* Search path separator. */
124 Lisp_Object Vpath_separator
;
126 /* Set nonzero after Emacs has started up the first time.
127 Prevents reinitialization of the Lisp world and keymaps
128 on subsequent starts. */
131 #ifdef DOUG_LEA_MALLOC
132 /* Preserves a pointer to the memory allocated that copies that
133 static data inside glibc's malloc. */
134 void *malloc_state_ptr
;
135 /* From glibc, a routine that returns a copy of the malloc internal state. */
136 extern void *malloc_get_state ();
137 /* From glibc, a routine that overwrites the malloc internal state. */
138 extern void malloc_set_state ();
139 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
140 dumping. Used to work around a bug in glibc's malloc. */
141 int malloc_using_checking
;
144 /* Variable whose value is symbol giving operating system type. */
145 Lisp_Object Vsystem_type
;
147 /* Variable whose value is string giving configuration built for. */
148 Lisp_Object Vsystem_configuration
;
150 /* Variable whose value is string giving configuration options,
151 for use when reporting bugs. */
152 Lisp_Object Vsystem_configuration_options
;
154 Lisp_Object Qfile_name_handler_alist
;
156 /* Current and previous system locales for messages and time. */
157 Lisp_Object Vsystem_messages_locale
;
158 Lisp_Object Vprevious_system_messages_locale
;
159 Lisp_Object Vsystem_time_locale
;
160 Lisp_Object Vprevious_system_time_locale
;
162 /* If non-zero, emacs should not attempt to use a window-specific code,
163 but instead should use the virtual terminal under which it was started. */
164 int inhibit_window_system
;
166 /* If nonzero, set Emacs to run at this priority. This is also used
167 in child_setup and sys_suspend to make sure subshells run at normal
168 priority; those functions have their own extern declaration. */
169 EMACS_INT emacs_priority
;
171 /* If non-zero, a filter or a sentinel is running. Tested to save the match
172 data on the first attempt to change it inside asynchronous code. */
173 int running_asynch_code
;
177 extern int inherited_pgroup
;
180 #ifdef HAVE_X_WINDOWS
181 /* If non-zero, -d was specified, meaning we're using some window system. */
185 /* An address near the bottom of the stack.
186 Tells GC how to save a copy of the stack. */
189 #ifdef HAVE_WINDOW_SYSTEM
190 extern Lisp_Object Vwindow_system
;
191 #endif /* HAVE_WINDOW_SYSTEM */
193 extern Lisp_Object Vauto_save_list_file_name
;
195 #ifdef USG_SHARED_LIBRARIES
196 /* If nonzero, this is the place to put the end of the writable segment
199 unsigned int bss_end
= 0;
202 /* Nonzero means running Emacs without interactive terminal. */
206 /* Value of Lisp variable `noninteractive'.
207 Normally same as C variable `noninteractive'
208 but nothing terrible happens if user sets this one. */
212 /* Save argv and argc. */
216 static void sort_args ();
217 void syms_of_emacs ();
220 Usage: %s [OPTION-OR-FILENAME]...\n\
222 Run Emacs, the extensible, customizable, self-documenting real-time\n\
223 display editor. The recommended way to start Emacs for normal editing\n\
224 is with no options at all.\n\
226 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
227 read the main documentation for these command-line arguments.\n\
229 Initialization options:\n\
231 --batch do not do interactive display; implies -q\n\
232 --script FILE run FILE as an Emacs Lisp script.\n\
233 --debug-init enable Emacs Lisp debugger during init file\n\
234 --help display this help message and exit\n\
235 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
236 --no-init-file, -q load neither ~/.emacs nor default.el\n\
237 --no-shared-memory, -nl do not use shared memory\n\
238 --no-site-file do not load site-start.el\n\
239 --no-splash do not display a splash screen on startup\n\
240 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
241 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
242 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
243 --user, -u USER load ~USER/.emacs instead of your own\n\
244 --version display version information and exit\n\
248 FILE visit FILE using find-file\n\
249 +LINE FILE visit FILE using find-file, then go to line LINE\n\
250 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
252 --directory, -L DIR add DIR to variable load-path\n\
253 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
254 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
255 --find-file FILE visit FILE\n\
256 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
257 --insert FILE insert contents of FILE into current buffer\n\
258 --kill exit without asking for confirmation\n\
259 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
260 --visit FILE visit FILE\n\
266 --background-color, -bg COLOR window background color\n\
267 --border-color, -bd COLOR main border color\n\
268 --border-width, -bw WIDTH width of main border\n\
269 --color=MODE color mode for character terminals;\n\
270 MODE defaults to `auto', and can also\n\
271 be `never', `auto', `always',\n\
272 or a mode name like `ansi8'\n\
273 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
274 --display, -d DISPLAY use X server DISPLAY\n\
275 --font, -fn FONT default font; must be fixed-width\n\
276 --foreground-color, -fg COLOR window foreground color\n\
277 --fullscreen, -fs make first frame fullscreen\n\
278 --fullwidth, -fw make the first frame wide as the screen\n\
279 --fullheight, -fh make the first frame high as the screen\n\
280 --geometry, -g GEOMETRY window geometry\n\
281 --iconic start Emacs in iconified state\n\
282 --icon-type, -i use picture of gnu for Emacs icon\n\
283 --internal-border, -ib WIDTH width between text and main border\n\
284 --line-spacing, -lsp PIXELS additional space to put between lines\n\
285 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
286 --name NAME title of main Emacs window\n\
287 --reverse-video, -r, -rv switch foreground and background\n\
288 --title, -T, -wn TITLE title for Emacs windows\n\
289 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
290 --xrm XRESOURCES set additional X resources\n\
292 You can generally also specify long option names with a single -; for\n\
293 example, -batch as well as --batch. You can use any unambiguous\n\
294 abbreviation for a --option.\n\
296 Various environment variables and window system resources also affect\n\
297 Emacs' operation. See the main documentation.\n\
301 Report bugs to %s. First, please see the Bugs\n\
302 section of the Emacs manual or the file BUGS.\n"
305 /* Signal code for the fatal signal that was received. */
306 int fatal_error_code
;
308 /* Nonzero if handling a fatal error already. */
309 int fatal_error_in_progress
;
311 /* If non-null, call this function from fatal_error_signal before
312 committing suicide. */
314 void (*fatal_error_signal_hook
) P_ ((void));
319 handle_USR1_signal (sig
)
322 struct input_event buf
;
324 bzero (&buf
, sizeof buf
);
325 buf
.kind
= USER_SIGNAL_EVENT
;
326 buf
.frame_or_window
= selected_frame
;
328 kbd_buffer_store_event (&buf
);
334 handle_USR2_signal (sig
)
337 struct input_event buf
;
339 bzero (&buf
, sizeof buf
);
340 buf
.kind
= USER_SIGNAL_EVENT
;
342 buf
.frame_or_window
= selected_frame
;
344 kbd_buffer_store_event (&buf
);
348 /* Handle bus errors, invalid instruction, etc. */
350 fatal_error_signal (sig
)
353 fatal_error_code
= sig
;
354 signal (sig
, SIG_DFL
);
356 TOTALLY_UNBLOCK_INPUT
;
358 /* If fatal error occurs in code below, avoid infinite recursion. */
359 if (! fatal_error_in_progress
)
361 fatal_error_in_progress
= 1;
363 shut_down_emacs (sig
, 0, Qnil
);
367 LIB$
STOP (SS$_ABORT
);
369 /* Signal the same code; this time it will really be fatal.
370 Remember that since we're in a signal handler, the signal we're
371 going to send is probably blocked, so we have to unblock it if we
372 want to really receive it. */
374 sigunblock (sigmask (fatal_error_code
));
377 if (fatal_error_signal_hook
)
378 fatal_error_signal_hook ();
380 kill (getpid (), fatal_error_code
);
386 /* Handler for SIGDANGER. */
388 memory_warning_signal (sig
)
391 signal (sig
, memory_warning_signal
);
393 malloc_warning ("Operating system warns that virtual memory is running low.\n");
395 /* It might be unsafe to call do_auto_save now. */
396 force_auto_save_soon ();
400 /* We define abort, rather than using it from the library,
401 so that GDB can return from a breakpoint here.
402 MSDOS has its own definition in msdos.c. */
404 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
406 #ifndef ABORT_RETURN_TYPE
407 #define ABORT_RETURN_TYPE void
413 kill (getpid (), SIGABRT
);
414 /* This shouldn't be executed, but it prevents a warning. */
420 /* Code for dealing with Lisp access to the Unix command line. */
423 init_cmdargs (argc
, argv
, skip_args
)
429 Lisp_Object name
, dir
, tem
;
430 int count
= SPECPDL_INDEX ();
431 Lisp_Object raw_name
;
436 raw_name
= build_string (argv
[0]);
438 /* Add /: to the front of the name
439 if it would otherwise be treated as magic. */
440 tem
= Ffind_file_name_handler (raw_name
, Qt
);
442 raw_name
= concat2 (build_string ("/:"), raw_name
);
444 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
445 Vinvocation_directory
= Ffile_name_directory (raw_name
);
447 /* If we got no directory in argv[0], search PATH to find where
448 Emacs actually came from. */
449 if (NILP (Vinvocation_directory
))
452 int yes
= openp (Vexec_path
, Vinvocation_name
,
453 Vexec_suffixes
, &found
, make_number (X_OK
));
456 /* Add /: to the front of the name
457 if it would otherwise be treated as magic. */
458 tem
= Ffind_file_name_handler (found
, Qt
);
460 found
= concat2 (build_string ("/:"), found
);
461 Vinvocation_directory
= Ffile_name_directory (found
);
465 if (!NILP (Vinvocation_directory
)
466 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
467 /* Emacs was started with relative path, like ./emacs.
469 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
471 Vinstallation_directory
= Qnil
;
473 if (!NILP (Vinvocation_directory
))
475 dir
= Vinvocation_directory
;
476 name
= Fexpand_file_name (Vinvocation_name
, dir
);
479 Lisp_Object tem
, lib_src_exists
;
480 Lisp_Object etc_exists
, info_exists
;
482 /* See if dir contains subdirs for use by Emacs.
483 Check for the ones that would exist in a build directory,
484 not including lisp and info. */
485 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
486 lib_src_exists
= Ffile_exists_p (tem
);
489 /* MSDOS installations frequently remove lib-src, but we still
490 must set installation-directory, or else info won't find
491 its files (it uses the value of installation-directory). */
492 tem
= Fexpand_file_name (build_string ("info"), dir
);
493 info_exists
= Ffile_exists_p (tem
);
498 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
500 tem
= Fexpand_file_name (build_string ("etc"), dir
);
501 etc_exists
= Ffile_exists_p (tem
);
502 if (!NILP (etc_exists
))
504 Vinstallation_directory
505 = Ffile_name_as_directory (dir
);
510 /* See if dir's parent contains those subdirs. */
511 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
512 lib_src_exists
= Ffile_exists_p (tem
);
516 /* See the MSDOS commentary above. */
517 tem
= Fexpand_file_name (build_string ("../info"), dir
);
518 info_exists
= Ffile_exists_p (tem
);
523 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
525 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
526 etc_exists
= Ffile_exists_p (tem
);
527 if (!NILP (etc_exists
))
529 tem
= Fexpand_file_name (build_string (".."), dir
);
530 Vinstallation_directory
531 = Ffile_name_as_directory (tem
);
536 /* If the Emacs executable is actually a link,
537 next try the dir that the link points into. */
538 tem
= Ffile_symlink_p (name
);
541 name
= Fexpand_file_name (tem
, dir
);
542 dir
= Ffile_name_directory (name
);
549 Vcommand_line_args
= Qnil
;
551 for (i
= argc
- 1; i
>= 0; i
--)
553 if (i
== 0 || i
> skip_args
)
555 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
558 unbind_to (count
, Qnil
);
561 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
562 doc
: /* Return the program name that was used to run Emacs.
563 Any directory names are omitted. */)
566 return Fcopy_sequence (Vinvocation_name
);
569 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
571 doc
: /* Return the directory name in which the Emacs executable was located. */)
574 return Fcopy_sequence (Vinvocation_directory
);
579 #ifdef LINK_CRTL_SHARE
580 #ifdef SHARABLE_LIB_BUG
581 extern noshare
char **environ
;
582 #endif /* SHARABLE_LIB_BUG */
583 #endif /* LINK_CRTL_SHARE */
587 /* A valid but unlikely value for the TZ environment value.
588 It is OK (though a bit slower) if the user actually chooses this value. */
589 static char dump_tz
[] = "UtC0";
592 #ifndef ORDINARY_LINK
593 /* We don't include crtbegin.o and crtend.o in the link,
594 so these functions and variables might be missed.
595 Provide dummy definitions to avoid error.
596 (We don't have any real constructors or destructors.) */
598 #ifndef GCC_CTORS_IN_LIBC
599 void __do_global_ctors ()
601 void __do_global_ctors_aux ()
603 void __do_global_dtors ()
605 /* Linux has a bug in its library; avoid an error. */
607 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
609 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
610 #endif /* GCC_CTORS_IN_LIBC */
613 #endif /* __GNUC__ */
614 #endif /* ORDINARY_LINK */
616 /* Test whether the next argument in ARGV matches SSTR or a prefix of
617 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
618 (the argument is supposed to have a value) store in *VALPTR either
619 the next argument or the portion of this one after the equal sign.
620 ARGV is read starting at position *SKIPPTR; this index is advanced
621 by the number of arguments used.
623 Too bad we can't just use getopt for all of this, but we don't have
624 enough information to do it right. */
627 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
640 /* Don't access argv[argc]; give up in advance. */
641 if (argc
<= *skipptr
+ 1)
644 arg
= argv
[*skipptr
+1];
647 if (strcmp (arg
, sstr
) == 0)
651 *valptr
= argv
[*skipptr
+2];
658 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
659 ? p
- arg
: strlen (arg
));
660 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
662 else if (valptr
== NULL
)
673 else if (argv
[*skipptr
+2] != NULL
)
675 *valptr
= argv
[*skipptr
+2];
685 #ifdef DOUG_LEA_MALLOC
687 /* malloc can be invoked even before main (e.g. by the dynamic
688 linker), so the dumped malloc state must be restored as early as
689 possible using this special hook. */
692 malloc_initialize_hook ()
695 extern char **environ
;
700 if (!malloc_using_checking
)
701 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
702 ignored if the heap to be restored was constructed without
703 malloc checking. Can't use unsetenv, since that calls malloc. */
707 for (p
= environ
; p
&& *p
; p
++)
708 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
717 malloc_set_state (malloc_state_ptr
);
718 free (malloc_state_ptr
);
721 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
724 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
726 #endif /* DOUG_LEA_MALLOC */
729 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
730 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
732 /* This function is used to determine an address to which bug report should
736 bug_reporting_address ()
742 temp
= Fsymbol_value (intern ("emacs-version"));
744 /* When `emacs-version' is invalid, use normal address. */
746 return REPORT_EMACS_BUG_ADDRESS
;
748 string
= SDATA (temp
);
750 /* Count dots in `emacs-version'. */
758 /* When `emacs-version' has at least three dots, it is development or
759 pretest version of Emacs. */
760 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
780 char stack_bottom_variable
;
781 int do_initial_setlocale
;
786 #ifdef HAVE_SETRLIMIT
793 extern Lisp_Object
*stack_base
;
797 #ifdef LINUX_SBRK_BUG
801 #ifdef RUN_TIME_REMAP
803 run_time_remap (argv
[0]);
808 unexec_init_emacs_zone ();
811 sort_args (argc
, argv
);
813 while (argv
[argc
]) argc
++;
815 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
816 /* We don't know the version number unless this is a dumped Emacs.
817 So ignore --version otherwise. */
821 tem
= Fsymbol_value (intern ("emacs-version"));
824 fprintf (stderr
, "Invalid value of `emacs-version'\n");
829 printf ("GNU Emacs %s\n", SDATA (tem
));
830 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
831 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
832 printf ("You may redistribute copies of Emacs\n");
833 printf ("under the terms of the GNU General Public License.\n");
834 printf ("For more information about these matters, ");
835 printf ("see the file named COPYING.\n");
840 /* Map in shared memory, if we are using that. */
842 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
845 /* The shared memory was just restored, which clobbered this. */
851 /* The shared memory was just restored, which clobbered this. */
858 extern int malloc_cookie
;
859 /* This helps out unexnext.c. */
861 if (malloc_jumpstart (malloc_cookie
) != 0)
862 printf ("malloc jumpstart failed!\n");
867 /* Skip process serial number passed in the form -psn_x_y as
868 command-line argument. */
869 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
874 /* If -map specified, map the data file in. */
877 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
881 #ifdef LINK_CRTL_SHARE
882 #ifdef SHARABLE_LIB_BUG
883 /* Bletcherous shared libraries! */
885 stdin
= fdopen (0, "r");
887 stdout
= fdopen (1, "w");
889 stderr
= fdopen (2, "w");
892 #endif /* SHARABLE_LIB_BUG */
893 #endif /* LINK_CRTL_SHARE */
896 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
897 /* Extend the stack space available.
898 Don't do that if dumping, since some systems (e.g. DJGPP)
899 might define a smaller stack limit at that time. */
902 && (!noninteractive
|| initialized
)
904 && !getrlimit (RLIMIT_STACK
, &rlim
))
907 extern int re_max_failures
;
908 /* Approximate the amount regex.c needs per unit of re_max_failures. */
909 int ratio
= 20 * sizeof (char *);
910 /* Then add 33% to cover the size of the smaller stacks that regex.c
911 successively allocates and discards, on its way to the maximum. */
913 /* Add in some extra to cover
914 what we're likely to use for other reasons. */
915 newlim
= re_max_failures
* ratio
+ 200000;
917 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
918 stack allocation routine for new process that the allocation
919 fails if stack limit is not on page boundary. So, round up the
920 new limit to page boundary. */
921 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
923 if (newlim
> rlim
.rlim_max
)
925 newlim
= rlim
.rlim_max
;
926 /* Don't let regex.c overflow the stack we have. */
927 re_max_failures
= (newlim
- 200000) / ratio
;
929 if (rlim
.rlim_cur
< newlim
)
930 rlim
.rlim_cur
= newlim
;
932 setrlimit (RLIMIT_STACK
, &rlim
);
934 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
936 /* Record (approximately) where the stack begins. */
937 stack_bottom
= &stack_bottom_variable
;
939 #ifdef USG_SHARED_LIBRARIES
941 brk ((void *)bss_end
);
946 #ifndef SYSTEM_MALLOC
947 /* Arrange to get warning messages as memory fills up. */
948 memory_warnings (0, malloc_warning
);
950 /* Call malloc at least once, to run the initial __malloc_hook.
951 Also call realloc and free for consistency. */
952 free (realloc (malloc (4), 4));
954 /* Arrange to disable interrupt input inside malloc etc. */
955 uninterrupt_malloc ();
956 #endif /* not SYSTEM_MALLOC */
959 /* We do all file input/output as binary files. When we need to translate
960 newlines, we do that manually. */
964 if (!isatty (fileno (stdin
)))
965 setmode (fileno (stdin
), O_BINARY
);
966 if (!isatty (fileno (stdout
)))
969 setmode (fileno (stdout
), O_BINARY
);
971 #else /* not __DJGPP__ >= 2 */
972 (stdin
)->_flag
&= ~_IOTEXT
;
973 (stdout
)->_flag
&= ~_IOTEXT
;
974 (stderr
)->_flag
&= ~_IOTEXT
;
975 #endif /* not __DJGPP__ >= 2 */
978 #ifdef SET_EMACS_PRIORITY
980 nice (emacs_priority
);
982 #endif /* SET_EMACS_PRIORITY */
984 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
985 The build procedure uses this while dumping, to ensure that the
986 dumped Emacs does not have its system locale tables initialized,
987 as that might cause screwups when the dumped Emacs starts up. */
989 char *lc_all
= getenv ("LC_ALL");
990 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
993 /* Set locale now, so that initial error messages are localized properly.
994 fixup_locale must wait until later, since it builds strings. */
995 if (do_initial_setlocale
)
996 setlocale (LC_ALL
, "");
998 #ifdef EXTRA_INITIALIZE
1002 inhibit_window_system
= 0;
1004 /* Handle the -t switch, which specifies filename to use as terminal. */
1008 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1013 result
= emacs_open (term
, O_RDWR
, 0);
1016 char *errstring
= strerror (errno
);
1017 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1023 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1026 fprintf (stderr
, "Using %s\n", term
);
1027 #ifdef HAVE_WINDOW_SYSTEM
1028 inhibit_window_system
= 1; /* -t => -nw */
1035 /* Command line option --no-windows is deprecated and thus not mentioned
1036 in the manual and usage informations. */
1037 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1038 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1039 inhibit_window_system
= 1;
1041 /* Handle the -batch switch, which means don't do interactive display. */
1043 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1045 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1047 noninteractive
= 1; /* Set batch mode. */
1048 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1049 handled in proper sequence. */
1050 argv
[skip_args
- 1] = "-l";
1052 sort_args (argc
, argv
);
1055 /* Handle the --help option, which gives a usage message. */
1056 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1058 printf (USAGE1
, argv
[0]);
1060 printf (USAGE3
, bug_reporting_address ());
1064 if (! noninteractive
)
1069 inherited_pgroup
= EMACS_GETPGRP (0);
1070 setpgrp (0, getpid ());
1073 #if defined (USG5) && defined (INTERRUPT_INPUT)
1081 /* Don't catch SIGHUP if dumping. */
1088 sigblock (sigmask (SIGHUP
));
1089 /* In --batch mode, don't catch SIGHUP if already ignored.
1090 That makes nohup work. */
1091 if (! noninteractive
1092 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1093 signal (SIGHUP
, fatal_error_signal
);
1094 sigunblock (sigmask (SIGHUP
));
1099 ! noninteractive
|| initialized
1105 /* Don't catch these signals in batch mode if dumping.
1106 On some machines, this sets static data that would make
1107 signal fail to work right when the dumped Emacs is run. */
1108 signal (SIGQUIT
, fatal_error_signal
);
1109 signal (SIGILL
, fatal_error_signal
);
1110 signal (SIGTRAP
, fatal_error_signal
);
1112 signal (SIGUSR1
, handle_USR1_signal
);
1114 signal (SIGUSR2
, handle_USR2_signal
);
1118 signal (SIGABRT
, fatal_error_signal
);
1121 signal (SIGHWE
, fatal_error_signal
);
1124 signal (SIGPRE
, fatal_error_signal
);
1127 signal (SIGORE
, fatal_error_signal
);
1130 signal (SIGUME
, fatal_error_signal
);
1133 signal (SIGDLK
, fatal_error_signal
);
1136 signal (SIGCPULIM
, fatal_error_signal
);
1139 /* This is missing on some systems - OS/2, for example. */
1140 signal (SIGIOT
, fatal_error_signal
);
1143 signal (SIGEMT
, fatal_error_signal
);
1145 signal (SIGFPE
, fatal_error_signal
);
1147 signal (SIGBUS
, fatal_error_signal
);
1149 signal (SIGSEGV
, fatal_error_signal
);
1151 signal (SIGSYS
, fatal_error_signal
);
1153 signal (SIGTERM
, fatal_error_signal
);
1155 signal (SIGXCPU
, fatal_error_signal
);
1158 signal (SIGXFSZ
, fatal_error_signal
);
1159 #endif /* SIGXFSZ */
1162 /* This just means available memory is getting low. */
1163 signal (SIGDANGER
, memory_warning_signal
);
1167 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1168 signal (SIGXCPU
, fatal_error_signal
);
1170 signal (SIGIOINT
, fatal_error_signal
);
1172 signal (SIGGRANT
, fatal_error_signal
);
1173 signal (SIGRETRACT
, fatal_error_signal
);
1174 signal (SIGSOUND
, fatal_error_signal
);
1175 signal (SIGMSG
, fatal_error_signal
);
1179 noninteractive1
= noninteractive
;
1181 /* Perform basic initializations (not merely interning symbols). */
1188 init_charset_once ();
1189 init_coding_once ();
1190 init_syntax_once (); /* Create standard syntax table. */
1191 init_category_once (); /* Create standard category table. */
1192 /* Must be done before init_buffer. */
1193 init_casetab_once ();
1194 init_buffer_once (); /* Create buffer table and some buffers. */
1195 init_minibuf_once (); /* Create list of minibuffers. */
1196 /* Must precede init_window_once. */
1198 /* Call syms_of_xfaces before init_window_once because that
1199 function creates Vterminal_frame. Termcap frames now use
1200 faces, and the face implementation uses some symbols as
1203 /* Call syms_of_keyboard before init_window_once because
1204 keyboard sets up symbols that include some face names that
1205 the X support will want to use. This can happen when
1206 CANNOT_DUMP is defined. */
1207 syms_of_keyboard ();
1210 /* init_window_once calls make_terminal_frame which on Mac OS
1211 creates a full-fledge output_mac type frame. This does not
1212 work correctly before syms_of_textprop, syms_of_macfns,
1213 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1214 syms_of_frame, mac_initialize, and init_keyboard have already
1216 syms_of_textprop ();
1230 init_window_once (); /* Init the window system. */
1231 init_fileio_once (); /* Must precede any path manipulation. */
1236 if (do_initial_setlocale
)
1239 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1240 Vsystem_time_locale
= Vprevious_system_time_locale
;
1245 #ifdef CLASH_DETECTION
1249 running_asynch_code
= 0;
1251 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1252 but not while dumping. */
1255 int inhibit_unibyte
= 0;
1257 /* --multibyte overrides EMACS_UNIBYTE. */
1258 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1259 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1260 /* Ignore EMACS_UNIBYTE before dumping. */
1261 || (!initialized
&& noninteractive
))
1262 inhibit_unibyte
= 1;
1264 /* --unibyte requests that we set up to do everything with single-byte
1265 buffers and strings. We need to handle this before calling
1266 init_lread, init_editfns and other places that generate Lisp strings
1267 from text in the environment. */
1268 /* Actually this shouldn't be needed as of 20.4 in a generally
1269 unibyte environment. As handa says, environment values
1270 aren't now decoded; also existing buffers are now made
1271 unibyte during startup if .emacs sets unibyte. Tested with
1272 8-bit data in environment variables and /etc/passwd, setting
1273 unibyte and Latin-1 in .emacs. -- Dave Love */
1274 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1275 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1276 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1278 Lisp_Object old_log_max
;
1279 Lisp_Object symbol
, tail
;
1281 symbol
= intern ("default-enable-multibyte-characters");
1282 Fset (symbol
, Qnil
);
1286 /* Erase pre-dump messages in *Messages* now so no abort. */
1287 old_log_max
= Vmessage_log_max
;
1288 XSETFASTINT (Vmessage_log_max
, 0);
1289 message_dolog ("", 0, 1, 0);
1290 Vmessage_log_max
= old_log_max
;
1293 for (tail
= Vbuffer_alist
; CONSP (tail
);
1298 buffer
= Fcdr (XCAR (tail
));
1299 /* Verify that all buffers are empty now, as they
1301 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1303 /* It is safe to do this crudely in an empty buffer. */
1304 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1310 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1313 #ifdef HAVE_X_WINDOWS
1314 /* Stupid kludge to catch command-line display spec. We can't
1315 handle this argument entirely in window system dependent code
1316 because we don't even know which window system dependent code
1317 to run until we've recognized this argument. */
1319 char *displayname
= 0;
1320 int count_before
= skip_args
;
1322 /* Skip any number of -d options, but only use the last one. */
1325 int count_before_this
= skip_args
;
1327 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1329 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1334 count_before
= count_before_this
;
1337 /* If we have the form --display=NAME,
1338 convert it into -d name.
1339 This requires inserting a new element into argv. */
1340 if (displayname
!= 0 && skip_args
- count_before
== 1)
1342 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1345 for (j
= 0; j
< count_before
+ 1; j
++)
1347 new[count_before
+ 1] = "-d";
1348 new[count_before
+ 2] = displayname
;
1349 for (j
= count_before
+ 2; j
<argc
; j
++)
1350 new[j
+ 1] = argv
[j
];
1354 /* Change --display to -d, when its arg is separate. */
1355 else if (displayname
!= 0 && skip_args
> count_before
1356 && argv
[count_before
+ 1][1] == '-')
1357 argv
[count_before
+ 1] = "-d";
1359 /* Don't actually discard this arg. */
1360 skip_args
= count_before
;
1364 /* argmatch must not be used after here,
1365 except when bulding temacs
1366 because the -d argument has not been skipped in skip_args. */
1369 /* Call early 'cause init_environment needs it. */
1371 /* Set defaults for several environment variables. */
1373 init_environment (argc
, argv
, skip_args
);
1380 /* Initialize environment from registry settings. */
1381 init_environment (argv
);
1382 init_ntproc (); /* must precede init_editfns. */
1387 init_mac_osx_environment ();
1390 /* egetenv is a pretty low-level facility, which may get called in
1391 many circumstances; it seems flimsy to put off initializing it
1392 until calling init_callproc. */
1393 set_process_environment ();
1394 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1395 if this is not done. Do it after set_process_environment so that we
1396 don't pollute Vprocess_environment. */
1397 /* Setting LANG here will defeat the startup locale processing... */
1402 init_buffer (); /* Init default directory of main buffer. */
1404 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1405 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1409 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1410 Lisp_Object old_log_max
;
1411 old_log_max
= Vmessage_log_max
;
1412 XSETFASTINT (Vmessage_log_max
, 0);
1413 message_dolog ("", 0, 1, 0);
1414 Vmessage_log_max
= old_log_max
;
1417 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1420 /* Intern the names of all standard functions and variables;
1421 define standard keys. */
1425 /* The basic levels of Lisp must come first. */
1426 /* And data must come first of all
1427 for the sake of symbols like error-message. */
1429 /* Called before init_window_once for Mac OS Classic. */
1437 syms_of_floatfns ();
1441 syms_of_bytecode ();
1443 syms_of_casefiddle ();
1445 syms_of_callproc ();
1446 syms_of_category ();
1448 /* Called before init_window_once for Mac OS Classic. */
1453 #ifndef NO_DIR_LIBRARY
1455 #endif /* not NO_DIR_LIBRARY */
1461 syms_of_coding (); /* This should be after syms_of_fileio. */
1462 #ifdef CLASH_DETECTION
1463 syms_of_filelock ();
1464 #endif /* CLASH_DETECTION */
1473 /* Called before init_window_once for Mac OS Classic. */
1484 /* Called before init_window_once for Mac OS Classic. */
1485 syms_of_textprop ();
1487 syms_of_composite ();
1493 #endif /* WINDOWSNT */
1496 #ifdef HAVE_X_WINDOWS
1506 #endif /* HAVE_X_WINDOWS */
1510 /* Called before init_window_once for Mac OS Classic. */
1518 syms_of_w32select ();
1521 #endif /* HAVE_NTGUI */
1528 #endif /* HAVE_CARBON */
1538 keys_of_casefiddle ();
1541 keys_of_keyboard ();
1549 Initialization that must be done even if the global variable
1550 initialized is non zero
1553 globals_of_w32fns ();
1554 globals_of_w32menu ();
1555 #endif /* end #ifdef HAVE_NTGUI */
1558 if (!noninteractive
)
1561 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1563 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1566 /* Called before init_window_once for Mac OS Classic. */
1567 init_keyboard (); /* This too must precede init_sys_modes. */
1570 init_vmsproc (); /* And this too. */
1572 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1573 #if defined (HAVE_X_WINDOWS) || defined (WINDOWSNT)
1575 #endif /* HAVE_X_WINDOWS */
1593 /* Handle -l loadup, args passed by Makefile. */
1594 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1595 Vtop_level
= Fcons (intern ("load"),
1596 Fcons (build_string (file
), Qnil
));
1597 /* Unless next switch is -nl, load "loadup.el" first thing. */
1599 Vtop_level
= Fcons (intern ("load"),
1600 Fcons (build_string ("loadup.el"), Qnil
));
1607 /* If the execution TZ happens to be the same as the dump TZ,
1608 change it to some other value and then change it back,
1609 to force the underlying implementation to reload the TZ info.
1610 This is needed on implementations that load TZ info from files,
1611 since the TZ file contents may differ between dump and execution. */
1612 char *tz
= getenv ("TZ");
1613 if (tz
&& !strcmp (tz
, dump_tz
))
1623 /* Set up for profiling. This is known to work on FreeBSD and
1624 GNU/Linux. It might work on some other systems too. Give it a
1625 try and tell us if it works on your system. To compile for
1626 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1627 #if defined (__FreeBSD__) || defined (__linux)
1631 extern void _mcleanup ();
1633 extern void safe_bcopy ();
1634 extern void dump_opcode_frequencies ();
1637 /* This uses safe_bcopy because that function comes first in the
1638 Emacs executable. It might be better to use something that
1639 gives the start of the text segment, but start_of_text is not
1640 defined on all systems now. */
1641 monstartup (safe_bcopy
, &etext
);
1650 #ifdef LOCALTIME_CACHE
1651 /* Some versions of localtime have a bug. They cache the value of the time
1652 zone rather than looking it up every time. Since localtime() is
1653 called to bolt the undumping time into the undumped emacs, this
1654 results in localtime ignoring the TZ environment variable.
1655 This flushes the new TZ value into localtime. */
1657 #endif /* defined (LOCALTIME_CACHE) */
1659 /* Enter editor command loop. This never returns. */
1665 /* Sort the args so we can find the most important ones
1666 at the beginning of argv. */
1668 /* First, here's a table of all the standard options. */
1670 struct standard_args
1678 struct standard_args standard_args
[] =
1680 { "-version", "--version", 150, 0 },
1682 { "-nl", "--no-shared-memory", 140, 0 },
1685 { "-map", "--map-data", 130, 0 },
1687 { "-t", "--terminal", 120, 1 },
1688 { "-nw", "--no-window-system", 110, 0 },
1689 { "-nw", "--no-windows", 110, 0 },
1690 { "-batch", "--batch", 100, 0 },
1691 { "-script", "--script", 100, 1 },
1692 { "-help", "--help", 90, 0 },
1693 { "-no-unibyte", "--no-unibyte", 83, 0 },
1694 { "-multibyte", "--multibyte", 82, 0 },
1695 { "-unibyte", "--unibyte", 81, 0 },
1696 { "-no-multibyte", "--no-multibyte", 80, 0 },
1697 { "-nl", "--no-loadup", 70, 0 },
1698 /* -d must come last before the options handled in startup.el. */
1699 { "-d", "--display", 60, 1 },
1700 { "-display", 0, 60, 1 },
1701 /* Now for the options handled in startup.el. */
1702 { "-q", "--no-init-file", 50, 0 },
1703 { "-no-init-file", 0, 50, 0 },
1704 { "-no-site-file", "--no-site-file", 40, 0 },
1705 { "-no-splash", "--no-splash", 40, 0 },
1706 { "-u", "--user", 30, 1 },
1707 { "-user", 0, 30, 1 },
1708 { "-debug-init", "--debug-init", 20, 0 },
1709 { "-i", "--icon-type", 15, 0 },
1710 { "-itype", 0, 15, 0 },
1711 { "-iconic", "--iconic", 15, 0 },
1712 { "-bg", "--background-color", 10, 1 },
1713 { "-background", 0, 10, 1 },
1714 { "-fg", "--foreground-color", 10, 1 },
1715 { "-foreground", 0, 10, 1 },
1716 { "-bd", "--border-color", 10, 1 },
1717 { "-bw", "--border-width", 10, 1 },
1718 { "-ib", "--internal-border", 10, 1 },
1719 { "-ms", "--mouse-color", 10, 1 },
1720 { "-cr", "--cursor-color", 10, 1 },
1721 { "-fn", "--font", 10, 1 },
1722 { "-font", 0, 10, 1 },
1723 { "-fs", "--fullscreen", 10, 0 },
1724 { "-fw", "--fullwidth", 10, 0 },
1725 { "-fh", "--fullheight", 10, 0 },
1726 { "-g", "--geometry", 10, 1 },
1727 { "-geometry", 0, 10, 1 },
1728 { "-T", "--title", 10, 1 },
1729 { "-title", 0, 10, 1 },
1730 { "-name", "--name", 10, 1 },
1731 { "-xrm", "--xrm", 10, 1 },
1732 { "-r", "--reverse-video", 5, 0 },
1734 { "-reverse", 0, 5, 0 },
1735 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1736 { "-vb", "--vertical-scroll-bars", 5, 0 },
1737 { "-color", "--color", 5, 0},
1738 /* These have the same priority as ordinary file name args,
1739 so they are not reordered with respect to those. */
1740 { "-L", "--directory", 0, 1 },
1741 { "-directory", 0, 0, 1 },
1742 { "-l", "--load", 0, 1 },
1743 { "-load", 0, 0, 1 },
1744 { "-f", "--funcall", 0, 1 },
1745 { "-funcall", 0, 0, 1 },
1746 { "-eval", "--eval", 0, 1 },
1747 { "-execute", "--execute", 0, 1 },
1748 { "-find-file", "--find-file", 0, 1 },
1749 { "-visit", "--visit", 0, 1 },
1750 { "-file", "--file", 0, 1 },
1751 { "-insert", "--insert", 0, 1 },
1752 /* This should be processed after ordinary file name args and the like. */
1753 { "-kill", "--kill", -10, 0 },
1756 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1757 so that the highest priority ones come first.
1758 Do not change the order of elements of equal priority.
1759 If an option takes an argument, keep it and its argument together.
1761 If an option that takes no argument appears more
1762 than once, eliminate all but one copy of it. */
1765 sort_args (argc
, argv
)
1769 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1770 /* For each element of argv,
1771 the corresponding element of options is:
1772 0 for an option that takes no arguments,
1773 1 for an option that takes one argument, etc.
1774 -1 for an ordinary non-option argument. */
1775 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1776 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1778 int incoming_used
= 1;
1782 /* Categorize all the options,
1783 and figure out which argv elts are option arguments. */
1784 for (from
= 1; from
< argc
; from
++)
1788 if (argv
[from
][0] == '-')
1793 /* If we have found "--", don't consider
1794 any more arguments as options. */
1795 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1797 /* Leave the "--", and everything following it, at the end. */
1798 for (; from
< argc
; from
++)
1800 priority
[from
] = -100;
1806 /* Look for a match with a known old-fashioned option. */
1807 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1808 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1810 options
[from
] = standard_args
[i
].nargs
;
1811 priority
[from
] = standard_args
[i
].priority
;
1812 if (from
+ standard_args
[i
].nargs
>= argc
)
1813 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1814 from
+= standard_args
[i
].nargs
;
1818 /* Look for a match with a known long option.
1819 MATCH is -1 if no match so far, -2 if two or more matches so far,
1820 >= 0 (the table index of the match) if just one match so far. */
1821 if (argv
[from
][1] == '-')
1824 thislen
= strlen (argv
[from
]);
1825 equals
= index (argv
[from
], '=');
1827 thislen
= equals
- argv
[from
];
1830 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1831 if (standard_args
[i
].longname
1832 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1841 /* If we found exactly one match, use that. */
1844 options
[from
] = standard_args
[match
].nargs
;
1845 priority
[from
] = standard_args
[match
].priority
;
1846 /* If --OPTION=VALUE syntax is used,
1847 this option uses just one argv element. */
1850 if (from
+ options
[from
] >= argc
)
1851 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1852 from
+= options
[from
];
1859 /* Copy the arguments, in order of decreasing priority, to NEW. */
1861 while (incoming_used
< argc
)
1864 int best_priority
= -9999;
1866 /* Find the highest priority remaining option.
1867 If several have equal priority, take the first of them. */
1868 for (from
= 1; from
< argc
; from
++)
1870 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1872 best_priority
= priority
[from
];
1875 /* Skip option arguments--they are tied to the options. */
1876 if (options
[from
] > 0)
1877 from
+= options
[from
];
1883 /* Copy the highest priority remaining option, with its args, to NEW.
1884 Unless it is a duplicate of the previous one. */
1885 if (! (options
[best
] == 0
1886 && ! strcmp (new[to
- 1], argv
[best
])))
1888 new[to
++] = argv
[best
];
1889 for (i
= 0; i
< options
[best
]; i
++)
1890 new[to
++] = argv
[best
+ i
+ 1];
1893 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1895 /* Clear out this option in ARGV. */
1897 for (i
= 0; i
< options
[best
]; i
++)
1898 argv
[best
+ i
+ 1] = 0;
1901 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1905 bcopy (new, argv
, sizeof (char *) * argc
);
1912 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1913 doc
: /* Exit the Emacs job and kill it.
1914 If ARG is an integer, return ARG as the exit program code.
1915 If ARG is a string, stuff it as keyboard input.
1917 The value of `kill-emacs-hook', if not void,
1918 is a list of functions (of no args),
1919 all of which are called before Emacs is actually killed. */)
1923 struct gcpro gcpro1
;
1930 if (!NILP (Vrun_hooks
) && !noninteractive
)
1931 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1935 /* Is it really necessary to do this deassign
1936 when we are going to exit anyway? */
1941 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1943 /* If we have an auto-save list file,
1944 kill it because we are exiting Emacs deliberately (not crashing).
1945 Do it after shut_down_emacs, which does an auto-save. */
1946 if (STRINGP (Vauto_save_list_file_name
))
1947 unlink (SDATA (Vauto_save_list_file_name
));
1949 exit (INTEGERP (arg
) ? XINT (arg
)
1960 /* Perform an orderly shutdown of Emacs. Autosave any modified
1961 buffers, kill any child processes, clean up the terminal modes (if
1962 we're in the foreground), and other stuff like that. Don't perform
1963 any redisplay; this may be called when Emacs is shutting down in
1964 the background, or after its X connection has died.
1966 If SIG is a signal number, print a message for it.
1968 This is called by fatal signal handlers, X protocol error handlers,
1972 shut_down_emacs (sig
, no_x
, stuff
)
1976 /* Prevent running of hooks from now on. */
1979 /* If we are controlling the terminal, reset terminal modes. */
1980 #ifdef EMACS_HAVE_TTY_PGRP
1982 int pgrp
= EMACS_GETPGRP (0);
1985 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1990 if (sig
&& sig
!= SIGTERM
)
1991 fprintf (stderr
, "Fatal error (%d).", sig
);
1999 stuff_buffered_input (stuff
);
2001 kill_buffer_processes (Qnil
);
2002 Fdo_auto_save (Qt
, Qnil
);
2004 #ifdef CLASH_DETECTION
2005 unlock_all_files ();
2009 kill_vms_processes ();
2012 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2013 #ifdef HAVE_X_WINDOWS
2014 /* It's not safe to call intern here. Maybe we are crashing. */
2015 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
2016 && SCHARS (SYMBOL_NAME (Vwindow_system
)) == 1
2017 && SREF (SYMBOL_NAME (Vwindow_system
), 0) == 'x'
2019 Fx_close_current_connection ();
2020 #endif /* HAVE_X_WINDOWS */
2024 /* There is a tendency for a SIGIO signal to arrive within exit,
2025 and cause a SIGHUP because the input descriptor is already closed. */
2027 signal (SIGIO
, SIG_IGN
);
2034 /* Do this only if terminating normally, we want glyph matrices
2035 etc. in a core dump. */
2036 if (sig
== 0 || sig
== SIGTERM
)
2038 check_glyph_memory ();
2039 check_message_stack ();
2053 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2054 doc
: /* Dump current state of Emacs into data file FILENAME.
2055 This function exists on systems that use HAVE_SHM. */)
2057 Lisp_Object filename
;
2059 extern char my_edata
[];
2063 CHECK_STRING (filename
);
2064 filename
= Fexpand_file_name (filename
, Qnil
);
2067 Vpurify_flag
= Qnil
;
2070 /* Tell malloc where start of impure now is. */
2071 /* Also arrange for warnings when nearly out of space. */
2072 #ifndef SYSTEM_MALLOC
2073 memory_warnings (my_edata
, malloc_warning
);
2075 map_out_data (SDATA (filename
));
2082 #else /* not HAVE_SHM */
2084 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2085 doc
: /* Dump current state of Emacs into executable file FILENAME.
2086 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2087 This is used in the file `loadup.el' when building Emacs.
2089 You must run Emacs in batch mode in order to dump it. */)
2091 Lisp_Object filename
, symfile
;
2093 extern char my_edata
[];
2096 int count
= SPECPDL_INDEX ();
2100 if (! noninteractive
)
2101 error ("Dumping Emacs works only in batch mode");
2103 /* Bind `command-line-processed' to nil before dumping,
2104 so that the dumped Emacs will process its command line
2105 and set up to work with X windows if appropriate. */
2106 symbol
= intern ("command-line-processed");
2107 specbind (symbol
, Qnil
);
2109 CHECK_STRING (filename
);
2110 filename
= Fexpand_file_name (filename
, Qnil
);
2111 if (!NILP (symfile
))
2113 CHECK_STRING (symfile
);
2114 if (SCHARS (symfile
))
2115 symfile
= Fexpand_file_name (symfile
, Qnil
);
2119 Vpurify_flag
= Qnil
;
2122 set_time_zone_rule (dump_tz
);
2123 #ifndef LOCALTIME_CACHE
2124 /* Force a tz reload, since set_time_zone_rule doesn't. */
2131 mapout_data (SDATA (filename
));
2133 /* Tell malloc where start of impure now is. */
2134 /* Also arrange for warnings when nearly out of space. */
2135 #ifndef SYSTEM_MALLOC
2137 /* On Windows, this was done before dumping, and that once suffices.
2138 Meanwhile, my_edata is not valid on Windows. */
2139 memory_warnings (my_edata
, malloc_warning
);
2140 #endif /* not WINDOWSNT */
2142 #ifdef DOUG_LEA_MALLOC
2143 malloc_state_ptr
= malloc_get_state ();
2146 #ifdef USE_MMAP_FOR_BUFFERS
2149 unexec (SDATA (filename
),
2150 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2151 #ifdef USE_MMAP_FOR_BUFFERS
2154 #ifdef DOUG_LEA_MALLOC
2155 free (malloc_state_ptr
);
2157 #endif /* not VMS */
2161 return unbind_to (count
, Qnil
);
2164 #endif /* not HAVE_SHM */
2166 #endif /* not CANNOT_DUMP */
2169 /* Recover from setlocale (LC_ALL, ""). */
2173 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2174 so that numbers are read and printed properly for Emacs Lisp. */
2175 setlocale (LC_NUMERIC
, "C");
2178 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2181 synchronize_locale (category
, plocale
, desired_locale
)
2183 Lisp_Object
*plocale
;
2184 Lisp_Object desired_locale
;
2186 if (! EQ (*plocale
, desired_locale
))
2188 *plocale
= desired_locale
;
2189 setlocale (category
, (STRINGP (desired_locale
)
2190 ? (char *)(SDATA (desired_locale
))
2195 /* Set system time locale to match Vsystem_time_locale, if possible. */
2197 synchronize_system_time_locale ()
2199 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2200 Vsystem_time_locale
);
2203 /* Set system messages locale to match Vsystem_messages_locale, if
2206 synchronize_system_messages_locale ()
2209 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2210 Vsystem_messages_locale
);
2213 #endif /* HAVE_SETLOCALE */
2220 decode_env_path (evarname
, defalt
)
2221 char *evarname
, *defalt
;
2223 register char *path
, *p
;
2224 Lisp_Object lpath
, element
, tem
;
2226 /* It's okay to use getenv here, because this function is only used
2227 to initialize variables when Emacs starts up, and isn't called
2230 path
= (char *) getenv (evarname
);
2236 /* Ensure values from the environment use the proper directory separator. */
2239 p
= alloca (strlen (path
) + 1);
2243 if ('/' == DIRECTORY_SEP
)
2244 dostounix_filename (path
);
2246 unixtodos_filename (path
);
2252 p
= index (path
, SEPCHAR
);
2253 if (!p
) p
= path
+ strlen (path
);
2254 element
= (p
- path
? make_string (path
, p
- path
)
2255 : build_string ("."));
2257 /* Add /: to the front of the name
2258 if it would otherwise be treated as magic. */
2259 tem
= Ffind_file_name_handler (element
, Qt
);
2261 /* However, if the handler says "I'm safe",
2262 don't bother adding /:. */
2266 prop
= Fget (tem
, intern ("safe-magic"));
2272 element
= concat2 (build_string ("/:"), element
);
2274 lpath
= Fcons (element
, lpath
);
2280 return Fnreverse (lpath
);
2286 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2287 staticpro (&Qfile_name_handler_alist
);
2291 defsubr (&Sdump_emacs_data
);
2293 defsubr (&Sdump_emacs
);
2297 defsubr (&Skill_emacs
);
2299 defsubr (&Sinvocation_name
);
2300 defsubr (&Sinvocation_directory
);
2302 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2303 doc
: /* Args passed by shell to Emacs, as a list of strings.
2304 Many arguments are deleted from the list as they are processed. */);
2306 DEFVAR_LISP ("system-type", &Vsystem_type
,
2307 doc
: /* Value is symbol indicating type of operating system you are using. */);
2308 Vsystem_type
= intern (SYSTEM_TYPE
);
2310 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2311 doc
: /* Value is string indicating configuration Emacs was built for.
2312 On MS-Windows, the value reflects the OS flavor and version on which
2313 Emacs is running. */);
2314 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2316 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2317 doc
: /* String containing the configuration options Emacs was built with. */);
2318 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2320 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2321 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2323 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2324 doc
: /* Hook to be run when kill-emacs is called.
2325 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2326 in other similar situations), functions placed on this hook should not
2327 expect to be able to interact with the user. To ask for confirmation,
2328 see `kill-emacs-query-functions' instead.
2330 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2331 Vkill_emacs_hook
= Qnil
;
2333 empty_string
= build_string ("");
2334 staticpro (&empty_string
);
2337 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2338 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2339 Vsignal_USR1_hook
= Qnil
;
2341 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2342 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2343 Vsignal_USR2_hook
= Qnil
;
2348 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2349 doc
: /* Priority for Emacs to run at.
2350 This value is effective only if set before Emacs is dumped,
2351 and only if the Emacs executable is installed with setuid to permit
2352 it to change priority. (Emacs sets its uid back to the real uid.)
2353 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2354 before you compile Emacs, to enable the code for this feature. */);
2357 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2358 doc
: /* The directory separator in search paths, as a string. */);
2361 Vpath_separator
= make_string (&c
, 1);
2364 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2365 doc
: /* The program name that was used to run Emacs.
2366 Any directory names are omitted. */);
2368 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2369 doc
: /* The directory in which the Emacs executable was found, to run it.
2370 The value is nil if that directory's name is not known. */);
2372 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2373 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2374 This is non-nil when we can't find those directories in their standard
2375 installed locations, but we can find them
2376 near where the Emacs executable was found. */);
2377 Vinstallation_directory
= Qnil
;
2379 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2380 doc
: /* System locale for messages. */);
2381 Vsystem_messages_locale
= Qnil
;
2383 DEFVAR_LISP ("previous-system-messages-locale",
2384 &Vprevious_system_messages_locale
,
2385 doc
: /* Most recently used system locale for messages. */);
2386 Vprevious_system_messages_locale
= Qnil
;
2388 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2389 doc
: /* System locale for time. */);
2390 Vsystem_time_locale
= Qnil
;
2392 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2393 doc
: /* Most recently used system locale for time. */);
2394 Vprevious_system_time_locale
= Qnil
;