1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001
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"
49 #include "blockinput.h"
50 #include "syssignal.h"
52 #include "termhooks.h"
62 #include <sys/resource.h>
70 #if !defined (USG) || defined (BSD_PGRPS)
72 #define setpgrp setpgid
76 extern void malloc_warning
P_ ((char *));
77 extern void set_time_zone_rule
P_ ((char *));
79 extern char *index
P_ ((const char *, int));
82 /* Make these values available in GDB, which doesn't see macros. */
84 EMACS_INT gdb_valbits
= VALBITS
;
85 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
86 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
88 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
90 EMACS_INT gdb_data_seg_bits
= 0;
92 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
94 /* Command line args from shell, as list of strings. */
95 Lisp_Object Vcommand_line_args
;
97 /* The name under which Emacs was invoked, with any leading directory
99 Lisp_Object Vinvocation_name
;
101 /* The directory name from which Emacs was invoked. */
102 Lisp_Object Vinvocation_directory
;
104 /* The directory name in which to find subdirs such as lisp and etc.
105 nil means get them only from PATH_LOADSEARCH. */
106 Lisp_Object Vinstallation_directory
;
108 /* Hook run by `kill-emacs' before it does really anything. */
109 Lisp_Object Vkill_emacs_hook
;
111 /* An empty lisp string. To avoid having to build any other. */
112 Lisp_Object empty_string
;
115 /* Hooks for signal USR1 and USR2 handling. */
116 Lisp_Object Vsignal_USR1_hook
;
118 Lisp_Object Vsignal_USR2_hook
;
122 /* Search path separator. */
123 Lisp_Object Vpath_separator
;
125 /* Set nonzero after Emacs has started up the first time.
126 Prevents reinitialization of the Lisp world and keymaps
127 on subsequent starts. */
130 #ifdef DOUG_LEA_MALLOC
131 /* Preserves a pointer to the memory allocated that copies that
132 static data inside glibc's malloc. */
133 void *malloc_state_ptr
;
134 /* From glibc, a routine that returns a copy of the malloc internal state. */
135 extern void *malloc_get_state ();
136 /* From glibc, a routine that overwrites the malloc internal state. */
137 extern void malloc_set_state ();
138 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
139 dumping. Used to work around a bug in glibc's malloc. */
140 int malloc_using_checking
;
143 /* Variable whose value is symbol giving operating system type. */
144 Lisp_Object Vsystem_type
;
146 /* Variable whose value is string giving configuration built for. */
147 Lisp_Object Vsystem_configuration
;
149 /* Variable whose value is string giving configuration options,
150 for use when reporting bugs. */
151 Lisp_Object Vsystem_configuration_options
;
153 Lisp_Object Qfile_name_handler_alist
;
155 /* Current and previous system locales for messages and time. */
156 Lisp_Object Vsystem_messages_locale
;
157 Lisp_Object Vprevious_system_messages_locale
;
158 Lisp_Object Vsystem_time_locale
;
159 Lisp_Object Vprevious_system_time_locale
;
161 /* If non-zero, emacs should not attempt to use an window-specific code,
162 but instead should use the virtual terminal under which it was started. */
163 int inhibit_window_system
;
165 /* If nonzero, set Emacs to run at this priority. This is also used
166 in child_setup and sys_suspend to make sure subshells run at normal
167 priority; those functions have their own extern declaration. */
170 /* If non-zero, a filter or a sentinel is running. Tested to save the match
171 data on the first attempt to change it inside asynchronous code. */
172 int running_asynch_code
;
176 extern int inherited_pgroup
;
179 #ifdef HAVE_X_WINDOWS
180 /* If non-zero, -d was specified, meaning we're using some window system. */
184 /* An address near the bottom of the stack.
185 Tells GC how to save a copy of the stack. */
188 #ifdef HAVE_WINDOW_SYSTEM
189 extern Lisp_Object Vwindow_system
;
190 #endif /* HAVE_WINDOW_SYSTEM */
192 extern Lisp_Object Vauto_save_list_file_name
;
194 #ifdef USG_SHARED_LIBRARIES
195 /* If nonzero, this is the place to put the end of the writable segment
198 unsigned int bss_end
= 0;
201 /* Nonzero means running Emacs without interactive terminal. */
205 /* Value of Lisp variable `noninteractive'.
206 Normally same as C variable `noninteractive'
207 but nothing terrible happens if user sets this one. */
211 /* Save argv and argc. */
215 static void sort_args ();
216 void syms_of_emacs ();
219 Usage: %s [OPTION-OR-FILENAME]...\n\
221 Run Emacs, the extensible, customizable, self-documenting real-time\n\
222 display editor. The recommended way to start Emacs for normal editing\n\
223 is with no options at all.\n\
225 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
226 read the main documentation for these command-line arguments.\n\
228 Initialization options:\n\
230 --batch do not do interactive display; implies -q\n\
231 --debug-init enable Emacs Lisp debugger during init file\n\
232 --help display this help message and exit\n\
233 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
234 --no-init-file, -q load neither ~/.emacs nor default.el\n\
235 --no-shared-memory, -nl do not use shared memory\n\
236 --no-site-file do not load site-start.el\n\
237 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
238 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
239 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
240 --user, -u USER load ~USER/.emacs instead of your own\n\
241 --version display version information and exit\n\
245 FILE visit FILE using find-file\n\
246 +LINE FILE visit FILE using find-file, then go to line LINE\n\
247 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
249 --directory, -L DIR add DIR to variable load-path\n\
250 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
251 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
252 --find-file FILE visit FILE\n\
253 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
254 --insert FILE insert contents of FILE into current buffer\n\
255 --kill exit without asking for confirmation\n\
256 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
257 --visit FILE visit FILE\n\
263 --background-color, -bg COLOR window background color\n\
264 --border-color, -bd COLOR main border color\n\
265 --border-width, -bw WIDTH width of main border\n\
266 --color=MODE color mode for character terminals;\n\
267 MODE defaults to `auto', and can also\n\
268 be `never', `auto', `always',\n\
269 or a mode name like `ansi8'\n\
270 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
271 --display, -d DISPLAY use X server DISPLAY\n\
272 --font, -fn FONT default font; must be fixed-width\n\
273 --foreground-color, -fg COLOR window foreground color\n\
274 --fullscreen, -fs make first frame fullscreen\n\
275 --fullwidth, -fw make the first frame wide as the screen\n\
276 --fullheight, -fh make the first frame high as the screen\n\
277 --geometry, -g GEOMETRY window geometry\n\
278 --iconic start Emacs in iconified state\n\
279 --icon-type, -i use picture of gnu for Emacs icon\n\
280 --internal-border, -ib WIDTH width between text and main border\n\
281 --line-spacing, -lsp PIXELS additional space to put between lines\n\
282 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
283 --name NAME title of main Emacs window\n\
284 --reverse-video, -r, -rv switch foreground and background\n\
285 --title, -T, -wn TITLE title for Emacs windows\n\
286 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
287 --xrm XRESOURCES set additional X resources\n\
289 You can generally also specify long option names with a single -; for\n\
290 example, -batch as well as --batch. You can use any unambiguous\n\
291 abbreviation for a --option.\n\
293 Various environment variables and window system resources also affect\n\
294 Emacs' operation. See the main documentation.\n\
298 Report bugs to %s. First, please see the Bugs\n\
299 section of the Emacs manual or the file BUGS.\n"
302 /* Signal code for the fatal signal that was received. */
303 int fatal_error_code
;
305 /* Nonzero if handling a fatal error already. */
306 int fatal_error_in_progress
;
308 /* If non-null, call this function from fatal_error_signal before
309 committing suicide. */
311 void (*fatal_error_signal_hook
) P_ ((void));
316 handle_USR1_signal (sig
)
319 struct input_event buf
;
321 bzero (&buf
, sizeof buf
);
322 buf
.kind
= USER_SIGNAL_EVENT
;
323 buf
.frame_or_window
= selected_frame
;
325 kbd_buffer_store_event (&buf
);
331 handle_USR2_signal (sig
)
334 struct input_event buf
;
336 bzero (&buf
, sizeof buf
);
337 buf
.kind
= USER_SIGNAL_EVENT
;
339 buf
.frame_or_window
= selected_frame
;
341 kbd_buffer_store_event (&buf
);
345 /* Handle bus errors, invalid instruction, etc. */
347 fatal_error_signal (sig
)
350 fatal_error_code
= sig
;
351 signal (sig
, SIG_DFL
);
353 TOTALLY_UNBLOCK_INPUT
;
355 /* If fatal error occurs in code below, avoid infinite recursion. */
356 if (! fatal_error_in_progress
)
358 fatal_error_in_progress
= 1;
360 shut_down_emacs (sig
, 0, Qnil
);
364 LIB$
STOP (SS$_ABORT
);
366 /* Signal the same code; this time it will really be fatal.
367 Remember that since we're in a signal handler, the signal we're
368 going to send is probably blocked, so we have to unblock it if we
369 want to really receive it. */
371 sigunblock (sigmask (fatal_error_code
));
374 if (fatal_error_signal_hook
)
375 fatal_error_signal_hook ();
377 kill (getpid (), fatal_error_code
);
383 /* Handler for SIGDANGER. */
385 memory_warning_signal (sig
)
388 signal (sig
, memory_warning_signal
);
390 malloc_warning ("Operating system warns that virtual memory is running low.\n");
392 /* It might be unsafe to call do_auto_save now. */
393 force_auto_save_soon ();
397 /* We define abort, rather than using it from the library,
398 so that GDB can return from a breakpoint here.
399 MSDOS has its own definition in msdos.c. */
401 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
403 #ifndef ABORT_RETURN_TYPE
404 #define ABORT_RETURN_TYPE void
410 kill (getpid (), SIGABRT
);
411 /* This shouldn't be executed, but it prevents a warning. */
417 /* Code for dealing with Lisp access to the Unix command line. */
420 init_cmdargs (argc
, argv
, skip_args
)
426 Lisp_Object name
, dir
, tem
;
427 int count
= specpdl_ptr
- specpdl
;
428 Lisp_Object raw_name
;
433 raw_name
= build_string (argv
[0]);
435 /* Add /: to the front of the name
436 if it would otherwise be treated as magic. */
437 tem
= Ffind_file_name_handler (raw_name
, Qt
);
439 raw_name
= concat2 (build_string ("/:"), raw_name
);
441 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
442 Vinvocation_directory
= Ffile_name_directory (raw_name
);
444 /* If we got no directory in argv[0], search PATH to find where
445 Emacs actually came from. */
446 if (NILP (Vinvocation_directory
))
449 int yes
= openp (Vexec_path
, Vinvocation_name
,
450 Vexec_suffixes
, &found
, 1);
453 /* Add /: to the front of the name
454 if it would otherwise be treated as magic. */
455 tem
= Ffind_file_name_handler (found
, Qt
);
457 found
= concat2 (build_string ("/:"), found
);
458 Vinvocation_directory
= Ffile_name_directory (found
);
462 if (!NILP (Vinvocation_directory
)
463 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
464 /* Emacs was started with relative path, like ./emacs.
466 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
468 Vinstallation_directory
= Qnil
;
470 if (!NILP (Vinvocation_directory
))
472 dir
= Vinvocation_directory
;
473 name
= Fexpand_file_name (Vinvocation_name
, dir
);
476 Lisp_Object tem
, lib_src_exists
;
477 Lisp_Object etc_exists
, info_exists
;
479 /* See if dir contains subdirs for use by Emacs.
480 Check for the ones that would exist in a build directory,
481 not including lisp and info. */
482 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
483 lib_src_exists
= Ffile_exists_p (tem
);
486 /* MSDOS installations frequently remove lib-src, but we still
487 must set installation-directory, or else info won't find
488 its files (it uses the value of installation-directory). */
489 tem
= Fexpand_file_name (build_string ("info"), dir
);
490 info_exists
= Ffile_exists_p (tem
);
495 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
497 tem
= Fexpand_file_name (build_string ("etc"), dir
);
498 etc_exists
= Ffile_exists_p (tem
);
499 if (!NILP (etc_exists
))
501 Vinstallation_directory
502 = Ffile_name_as_directory (dir
);
507 /* See if dir's parent contains those subdirs. */
508 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
509 lib_src_exists
= Ffile_exists_p (tem
);
513 /* See the MSDOS commentary above. */
514 tem
= Fexpand_file_name (build_string ("../info"), dir
);
515 info_exists
= Ffile_exists_p (tem
);
520 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
522 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
523 etc_exists
= Ffile_exists_p (tem
);
524 if (!NILP (etc_exists
))
526 tem
= Fexpand_file_name (build_string (".."), dir
);
527 Vinstallation_directory
528 = Ffile_name_as_directory (tem
);
533 /* If the Emacs executable is actually a link,
534 next try the dir that the link points into. */
535 tem
= Ffile_symlink_p (name
);
538 name
= Fexpand_file_name (tem
, dir
);
539 dir
= Ffile_name_directory (name
);
546 Vcommand_line_args
= Qnil
;
548 for (i
= argc
- 1; i
>= 0; i
--)
550 if (i
== 0 || i
> skip_args
)
552 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
555 unbind_to (count
, Qnil
);
558 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
559 doc
: /* Return the program name that was used to run Emacs.
560 Any directory names are omitted. */)
563 return Fcopy_sequence (Vinvocation_name
);
566 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
568 doc
: /* Return the directory name in which the Emacs executable was located. */)
571 return Fcopy_sequence (Vinvocation_directory
);
576 #ifdef LINK_CRTL_SHARE
577 #ifdef SHARABLE_LIB_BUG
578 extern noshare
char **environ
;
579 #endif /* SHARABLE_LIB_BUG */
580 #endif /* LINK_CRTL_SHARE */
584 /* A valid but unlikely value for the TZ environment value.
585 It is OK (though a bit slower) if the user actually chooses this value. */
586 static char dump_tz
[] = "UtC0";
589 #ifndef ORDINARY_LINK
590 /* We don't include crtbegin.o and crtend.o in the link,
591 so these functions and variables might be missed.
592 Provide dummy definitions to avoid error.
593 (We don't have any real constructors or destructors.) */
595 #ifndef GCC_CTORS_IN_LIBC
596 void __do_global_ctors ()
598 void __do_global_ctors_aux ()
600 void __do_global_dtors ()
602 /* Linux has a bug in its library; avoid an error. */
604 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
606 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
607 #endif /* GCC_CTORS_IN_LIBC */
610 #endif /* __GNUC__ */
611 #endif /* ORDINARY_LINK */
613 /* Test whether the next argument in ARGV matches SSTR or a prefix of
614 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
615 (the argument is supposed to have a value) store in *VALPTR either
616 the next argument or the portion of this one after the equal sign.
617 ARGV is read starting at position *SKIPPTR; this index is advanced
618 by the number of arguments used.
620 Too bad we can't just use getopt for all of this, but we don't have
621 enough information to do it right. */
624 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
637 /* Don't access argv[argc]; give up in advance. */
638 if (argc
<= *skipptr
+ 1)
641 arg
= argv
[*skipptr
+1];
644 if (strcmp (arg
, sstr
) == 0)
648 *valptr
= argv
[*skipptr
+2];
655 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
656 ? p
- arg
: strlen (arg
));
657 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
659 else if (valptr
== NULL
)
670 else if (argv
[*skipptr
+2] != NULL
)
672 *valptr
= argv
[*skipptr
+2];
682 #ifdef DOUG_LEA_MALLOC
684 /* malloc can be invoked even before main (e.g. by the dynamic
685 linker), so the dumped malloc state must be restored as early as
686 possible using this special hook. */
689 malloc_initialize_hook ()
692 extern char **environ
;
697 if (!malloc_using_checking
)
698 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
699 ignored if the heap to be restored was constructed without
700 malloc checking. Can't use unsetenv, since that calls malloc. */
704 for (p
= environ
; p
&& *p
; p
++)
705 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
714 malloc_set_state (malloc_state_ptr
);
715 free (malloc_state_ptr
);
718 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
721 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
723 #endif /* DOUG_LEA_MALLOC */
726 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
727 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
729 /* This function is used to determine an address to which bug report should
733 bug_reporting_address ()
739 temp
= Fsymbol_value (intern ("emacs-version"));
741 /* When `emacs-version' is invalid, use normal address. */
743 return REPORT_EMACS_BUG_ADDRESS
;
745 string
= XSTRING (temp
)->data
;
747 /* Count dots in `emacs-version'. */
755 /* When `emacs-version' has at least three dots, it is development or
756 pretest version of Emacs. */
757 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
763 main (argc
, argv
, envp
)
771 char stack_bottom_variable
;
772 int do_initial_setlocale
;
777 #ifdef HAVE_SETRLIMIT
783 extern Lisp_Object
*stack_base
;
787 #ifdef LINUX_SBRK_BUG
791 #ifdef RUN_TIME_REMAP
793 run_time_remap (argv
[0]);
796 sort_args (argc
, argv
);
798 while (argv
[argc
]) argc
++;
800 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
801 /* We don't know the version number unless this is a dumped Emacs.
802 So ignore --version otherwise. */
806 tem
= Fsymbol_value (intern ("emacs-version"));
809 fprintf (stderr
, "Invalid value of `emacs-version'\n");
814 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
815 printf ("Copyright (C) 2001 Free Software Foundation, Inc.\n");
816 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
817 printf ("You may redistribute copies of Emacs\n");
818 printf ("under the terms of the GNU General Public License.\n");
819 printf ("For more information about these matters, ");
820 printf ("see the file named COPYING.\n");
825 /* Map in shared memory, if we are using that. */
827 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
830 /* The shared memory was just restored, which clobbered this. */
836 /* The shared memory was just restored, which clobbered this. */
843 extern int malloc_cookie
;
844 /* This helps out unexnext.c. */
846 if (malloc_jumpstart (malloc_cookie
) != 0)
847 printf ("malloc jumpstart failed!\n");
852 /* If -map specified, map the data file in. */
855 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
859 #ifdef LINK_CRTL_SHARE
860 #ifdef SHARABLE_LIB_BUG
861 /* Bletcherous shared libraries! */
863 stdin
= fdopen (0, "r");
865 stdout
= fdopen (1, "w");
867 stderr
= fdopen (2, "w");
870 #endif /* SHARABLE_LIB_BUG */
871 #endif /* LINK_CRTL_SHARE */
874 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
875 /* Extend the stack space available.
876 Don't do that if dumping, since some systems (e.g. DJGPP)
877 might define a smaller stack limit at that time. */
880 && (!noninteractive
|| initialized
)
882 && !getrlimit (RLIMIT_STACK
, &rlim
))
885 extern int re_max_failures
;
886 /* Approximate the amount regex.c needs per unit of re_max_failures. */
887 int ratio
= 20 * sizeof (char *);
888 /* Then add 33% to cover the size of the smaller stacks that regex.c
889 successively allocates and discards, on its way to the maximum. */
891 /* Add in some extra to cover
892 what we're likely to use for other reasons. */
893 newlim
= re_max_failures
* ratio
+ 200000;
895 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
896 stack allocation routine for new process that the allocation
897 fails if stack limit is not on page boundary. So, round up the
898 new limit to page boundary. */
899 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
901 if (newlim
> rlim
.rlim_max
)
903 newlim
= rlim
.rlim_max
;
904 /* Don't let regex.c overflow the stack we have. */
905 re_max_failures
= (newlim
- 200000) / ratio
;
907 if (rlim
.rlim_cur
< newlim
)
908 rlim
.rlim_cur
= newlim
;
910 setrlimit (RLIMIT_STACK
, &rlim
);
912 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
914 /* Record (approximately) where the stack begins. */
915 stack_bottom
= &stack_bottom_variable
;
917 #ifdef USG_SHARED_LIBRARIES
919 brk ((void *)bss_end
);
924 #ifndef SYSTEM_MALLOC
925 /* Arrange to get warning messages as memory fills up. */
926 memory_warnings (0, malloc_warning
);
928 /* Call malloc at least once, to run the initial __malloc_hook.
929 Also call realloc and free for consistency. */
930 free (realloc (malloc (4), 4));
932 /* Arrange to disable interrupt input inside malloc etc. */
933 uninterrupt_malloc ();
934 #endif /* not SYSTEM_MALLOC */
937 /* We do all file input/output as binary files. When we need to translate
938 newlines, we do that manually. */
942 if (!isatty (fileno (stdin
)))
943 setmode (fileno (stdin
), O_BINARY
);
944 if (!isatty (fileno (stdout
)))
947 setmode (fileno (stdout
), O_BINARY
);
949 #else /* not __DJGPP__ >= 2 */
950 (stdin
)->_flag
&= ~_IOTEXT
;
951 (stdout
)->_flag
&= ~_IOTEXT
;
952 (stderr
)->_flag
&= ~_IOTEXT
;
953 #endif /* not __DJGPP__ >= 2 */
956 #ifdef SET_EMACS_PRIORITY
958 nice (emacs_priority
);
960 #endif /* SET_EMACS_PRIORITY */
962 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
963 The build procedure uses this while dumping, to ensure that the
964 dumped Emacs does not have its system locale tables initialized,
965 as that might cause screwups when the dumped Emacs starts up. */
967 char *lc_all
= getenv ("LC_ALL");
968 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
971 /* Set locale now, so that initial error messages are localized properly.
972 fixup_locale must wait until later, since it builds strings. */
973 if (do_initial_setlocale
)
974 setlocale (LC_ALL
, "");
976 #ifdef EXTRA_INITIALIZE
980 inhibit_window_system
= 0;
982 /* Handle the -t switch, which specifies filename to use as terminal. */
986 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
991 result
= emacs_open (term
, O_RDWR
, 0);
994 char *errstring
= strerror (errno
);
995 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1001 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1004 fprintf (stderr
, "Using %s\n", term
);
1005 #ifdef HAVE_WINDOW_SYSTEM
1006 inhibit_window_system
= 1; /* -t => -nw */
1013 /* Command line option --no-windows is deprecated and thus not mentioned
1014 in the manual and usage informations. */
1015 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1016 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1017 inhibit_window_system
= 1;
1019 /* Handle the -batch switch, which means don't do interactive display. */
1021 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1024 /* Handle the --help option, which gives a usage message. */
1025 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1027 printf (USAGE1
, argv
[0]);
1029 printf (USAGE3
, bug_reporting_address ());
1033 if (! noninteractive
)
1038 inherited_pgroup
= EMACS_GETPGRP (0);
1039 setpgrp (0, getpid ());
1042 #if defined (USG5) && defined (INTERRUPT_INPUT)
1050 /* Don't catch SIGHUP if dumping. */
1057 sigblock (sigmask (SIGHUP
));
1058 /* In --batch mode, don't catch SIGHUP if already ignored.
1059 That makes nohup work. */
1060 if (! noninteractive
1061 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1062 signal (SIGHUP
, fatal_error_signal
);
1063 sigunblock (sigmask (SIGHUP
));
1068 ! noninteractive
|| initialized
1074 /* Don't catch these signals in batch mode if dumping.
1075 On some machines, this sets static data that would make
1076 signal fail to work right when the dumped Emacs is run. */
1077 signal (SIGQUIT
, fatal_error_signal
);
1078 signal (SIGILL
, fatal_error_signal
);
1079 signal (SIGTRAP
, fatal_error_signal
);
1081 signal (SIGUSR1
, handle_USR1_signal
);
1083 signal (SIGUSR2
, handle_USR2_signal
);
1087 signal (SIGABRT
, fatal_error_signal
);
1090 signal (SIGHWE
, fatal_error_signal
);
1093 signal (SIGPRE
, fatal_error_signal
);
1096 signal (SIGORE
, fatal_error_signal
);
1099 signal (SIGUME
, fatal_error_signal
);
1102 signal (SIGDLK
, fatal_error_signal
);
1105 signal (SIGCPULIM
, fatal_error_signal
);
1108 /* This is missing on some systems - OS/2, for example. */
1109 signal (SIGIOT
, fatal_error_signal
);
1112 signal (SIGEMT
, fatal_error_signal
);
1114 signal (SIGFPE
, fatal_error_signal
);
1116 signal (SIGBUS
, fatal_error_signal
);
1118 signal (SIGSEGV
, fatal_error_signal
);
1120 signal (SIGSYS
, fatal_error_signal
);
1122 signal (SIGTERM
, fatal_error_signal
);
1124 signal (SIGXCPU
, fatal_error_signal
);
1127 signal (SIGXFSZ
, fatal_error_signal
);
1128 #endif /* SIGXFSZ */
1131 /* This just means available memory is getting low. */
1132 signal (SIGDANGER
, memory_warning_signal
);
1136 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1137 signal (SIGXCPU
, fatal_error_signal
);
1139 signal (SIGIOINT
, fatal_error_signal
);
1141 signal (SIGGRANT
, fatal_error_signal
);
1142 signal (SIGRETRACT
, fatal_error_signal
);
1143 signal (SIGSOUND
, fatal_error_signal
);
1144 signal (SIGMSG
, fatal_error_signal
);
1148 noninteractive1
= noninteractive
;
1150 /* Perform basic initializations (not merely interning symbols). */
1157 init_charset_once ();
1158 init_coding_once ();
1159 init_syntax_once (); /* Create standard syntax table. */
1160 init_category_once (); /* Create standard category table. */
1161 /* Must be done before init_buffer. */
1162 init_casetab_once ();
1163 init_buffer_once (); /* Create buffer table and some buffers. */
1164 init_minibuf_once (); /* Create list of minibuffers. */
1165 /* Must precede init_window_once. */
1167 /* Call syms_of_xfaces before init_window_once because that
1168 function creates Vterminal_frame. Termcap frames now use
1169 faces, and the face implementation uses some symbols as
1172 /* Call syms_of_keyboard before init_window_once because
1173 keyboard sets up symbols that include some face names that
1174 the X support will want to use. This can happen when
1175 CANNOT_DUMP is defined. */
1176 syms_of_keyboard ();
1179 /* init_window_once calls make_terminal_frame which on Mac OS
1180 creates a full-fledge output_mac type frame. This does not
1181 work correctly before syms_of_textprop, syms_of_macfns,
1182 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1183 syms_of_frame, x_term_init, and init_keyboard have already
1185 syms_of_textprop ();
1199 init_window_once (); /* Init the window system. */
1200 init_fileio_once (); /* Must precede any path manipulation. */
1205 if (do_initial_setlocale
)
1208 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1209 Vsystem_time_locale
= Vprevious_system_time_locale
;
1214 #ifdef CLASH_DETECTION
1218 running_asynch_code
= 0;
1220 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1221 but not while dumping. */
1224 ! noninteractive
|| initialized
1230 int inhibit_unibyte
= 0;
1232 /* --multibyte overrides EMACS_UNIBYTE. */
1233 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1234 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1235 inhibit_unibyte
= 1;
1237 /* --unibyte requests that we set up to do everything with single-byte
1238 buffers and strings. We need to handle this before calling
1239 init_lread, init_editfns and other places that generate Lisp strings
1240 from text in the environment. */
1241 /* Actually this shouldn't be needed as of 20.4 in a generally
1242 unibyte environment. As handa says, environment values
1243 aren't now decoded; also existing buffers are now made
1244 unibyte during startup if .emacs sets unibyte. Tested with
1245 8-bit data in environment variables and /etc/passwd, setting
1246 unibyte and Latin-1 in .emacs. -- Dave Love */
1247 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1248 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1249 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1251 Lisp_Object old_log_max
;
1252 Lisp_Object symbol
, tail
;
1254 symbol
= intern ("default-enable-multibyte-characters");
1255 Fset (symbol
, Qnil
);
1259 /* Erase pre-dump messages in *Messages* now so no abort. */
1260 old_log_max
= Vmessage_log_max
;
1261 XSETFASTINT (Vmessage_log_max
, 0);
1262 message_dolog ("", 0, 1, 0);
1263 Vmessage_log_max
= old_log_max
;
1266 for (tail
= Vbuffer_alist
; CONSP (tail
);
1271 buffer
= Fcdr (XCAR (tail
));
1272 /* Verify that all buffers are empty now, as they
1274 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1276 /* It is safe to do this crudely in an empty buffer. */
1277 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1283 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1286 #ifdef HAVE_X_WINDOWS
1287 /* Stupid kludge to catch command-line display spec. We can't
1288 handle this argument entirely in window system dependent code
1289 because we don't even know which window system dependent code
1290 to run until we've recognized this argument. */
1292 char *displayname
= 0;
1293 int count_before
= skip_args
;
1295 /* Skip any number of -d options, but only use the last one. */
1298 int count_before_this
= skip_args
;
1300 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1302 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1307 count_before
= count_before_this
;
1310 /* If we have the form --display=NAME,
1311 convert it into -d name.
1312 This requires inserting a new element into argv. */
1313 if (displayname
!= 0 && skip_args
- count_before
== 1)
1315 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1318 for (j
= 0; j
< count_before
+ 1; j
++)
1320 new[count_before
+ 1] = "-d";
1321 new[count_before
+ 2] = displayname
;
1322 for (j
= count_before
+ 2; j
<argc
; j
++)
1323 new[j
+ 1] = argv
[j
];
1327 /* Change --display to -d, when its arg is separate. */
1328 else if (displayname
!= 0 && skip_args
> count_before
1329 && argv
[count_before
+ 1][1] == '-')
1330 argv
[count_before
+ 1] = "-d";
1332 /* Don't actually discard this arg. */
1333 skip_args
= count_before
;
1337 /* argmatch must not be used after here,
1338 except when bulding temacs
1339 because the -d argument has not been skipped in skip_args. */
1342 /* Call early 'cause init_environment needs it. */
1344 /* Set defaults for several environment variables. */
1346 init_environment (argc
, argv
, skip_args
);
1352 /* Initialize environment from registry settings. */
1353 init_environment (argv
);
1354 init_ntproc (); /* must precede init_editfns. */
1357 /* egetenv is a pretty low-level facility, which may get called in
1358 many circumstances; it seems flimsy to put off initializing it
1359 until calling init_callproc. */
1360 set_process_environment ();
1361 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1362 if this is not done. Do it after set_process_environment so that we
1363 don't pollute Vprocess_environment. */
1364 /* Setting LANG here will defeat the startup locale processing... */
1369 init_buffer (); /* Init default directory of main buffer. */
1371 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1372 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1376 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1377 Lisp_Object old_log_max
;
1378 old_log_max
= Vmessage_log_max
;
1379 XSETFASTINT (Vmessage_log_max
, 0);
1380 message_dolog ("", 0, 1, 0);
1381 Vmessage_log_max
= old_log_max
;
1384 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1387 /* Intern the names of all standard functions and variables;
1388 define standard keys. */
1392 /* The basic levels of Lisp must come first. */
1393 /* And data must come first of all
1394 for the sake of symbols like error-message. */
1396 /* Called before init_window_once for Mac OS. */
1404 syms_of_floatfns ();
1408 syms_of_bytecode ();
1410 syms_of_casefiddle ();
1412 syms_of_callproc ();
1413 syms_of_category ();
1415 /* Called before init_window_once for Mac OS. */
1420 #ifndef NO_DIR_LIBRARY
1422 #endif /* not NO_DIR_LIBRARY */
1428 syms_of_coding (); /* This should be after syms_of_fileio. */
1429 #ifdef CLASH_DETECTION
1430 syms_of_filelock ();
1431 #endif /* CLASH_DETECTION */
1440 /* Called before init_window_once for Mac OS. */
1451 /* Called before init_window_once for Mac OS. */
1452 syms_of_textprop ();
1454 syms_of_composite ();
1460 #endif /* WINDOWSNT */
1463 #ifdef HAVE_X_WINDOWS
1470 #endif /* HAVE_X_WINDOWS */
1481 syms_of_w32select ();
1484 #endif /* HAVE_NTGUI */
1494 keys_of_casefiddle ();
1497 keys_of_keyboard ();
1503 if (!noninteractive
)
1506 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1508 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1511 /* Called before init_window_once for Mac OS. */
1512 init_keyboard (); /* This too must precede init_sys_modes. */
1515 init_vmsproc (); /* And this too. */
1517 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1518 #ifdef HAVE_X_WINDOWS
1520 #endif /* HAVE_X_WINDOWS */
1538 /* Handle -l loadup, args passed by Makefile. */
1539 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1540 Vtop_level
= Fcons (intern ("load"),
1541 Fcons (build_string (file
), Qnil
));
1543 /* Unless next switch is -nl, load "loadup.el" first thing. */
1545 Vtop_level
= Fcons (intern ("load"),
1546 Fcons (build_string ("loadup.el"), Qnil
));
1547 #endif /* CANNOT_DUMP */
1554 /* If the execution TZ happens to be the same as the dump TZ,
1555 change it to some other value and then change it back,
1556 to force the underlying implementation to reload the TZ info.
1557 This is needed on implementations that load TZ info from files,
1558 since the TZ file contents may differ between dump and execution. */
1559 char *tz
= getenv ("TZ");
1560 if (tz
&& !strcmp (tz
, dump_tz
))
1570 /* Set up for profiling. This is known to work on FreeBSD and
1571 GNU/Linux. It might work on some other systems too. Give it a
1572 try and tell us if it works on your system. To compile for
1573 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1574 #if defined (__FreeBSD__) || defined (__linux)
1578 extern void _mcleanup ();
1580 extern void safe_bcopy ();
1581 extern void dump_opcode_frequencies ();
1584 /* This uses safe_bcopy because that function comes first in the
1585 Emacs executable. It might be better to use something that
1586 gives the start of the text segment, but start_of_text is not
1587 defined on all systems now. */
1588 monstartup (safe_bcopy
, &etext
);
1597 #ifdef LOCALTIME_CACHE
1598 /* Some versions of localtime have a bug. They cache the value of the time
1599 zone rather than looking it up every time. Since localtime() is
1600 called to bolt the undumping time into the undumped emacs, this
1601 results in localtime ignoring the TZ environment variable.
1602 This flushes the new TZ value into localtime. */
1604 #endif /* defined (LOCALTIME_CACHE) */
1606 /* Enter editor command loop. This never returns. */
1612 /* Sort the args so we can find the most important ones
1613 at the beginning of argv. */
1615 /* First, here's a table of all the standard options. */
1617 struct standard_args
1625 struct standard_args standard_args
[] =
1627 { "-version", "--version", 150, 0 },
1629 { "-nl", "--no-shared-memory", 140, 0 },
1632 { "-map", "--map-data", 130, 0 },
1634 { "-t", "--terminal", 120, 1 },
1635 { "-nw", "--no-window-system", 110, 0 },
1636 { "-nw", "--no-windows", 110, 0 },
1637 { "-batch", "--batch", 100, 0 },
1638 { "-help", "--help", 90, 0 },
1639 { "-no-unibyte", "--no-unibyte", 83, 0 },
1640 { "-multibyte", "--multibyte", 82, 0 },
1641 { "-unibyte", "--unibyte", 81, 0 },
1642 { "-no-multibyte", "--no-multibyte", 80, 0 },
1644 { "-nl", "--no-loadup", 70, 0 },
1646 /* -d must come last before the options handled in startup.el. */
1647 { "-d", "--display", 60, 1 },
1648 { "-display", 0, 60, 1 },
1649 /* Now for the options handled in startup.el. */
1650 { "-q", "--no-init-file", 50, 0 },
1651 { "-no-init-file", 0, 50, 0 },
1652 { "-no-site-file", "--no-site-file", 40, 0 },
1653 { "-u", "--user", 30, 1 },
1654 { "-user", 0, 30, 1 },
1655 { "-debug-init", "--debug-init", 20, 0 },
1656 { "-i", "--icon-type", 15, 0 },
1657 { "-itype", 0, 15, 0 },
1658 { "-iconic", "--iconic", 15, 0 },
1659 { "-bg", "--background-color", 10, 1 },
1660 { "-background", 0, 10, 1 },
1661 { "-fg", "--foreground-color", 10, 1 },
1662 { "-foreground", 0, 10, 1 },
1663 { "-bd", "--border-color", 10, 1 },
1664 { "-bw", "--border-width", 10, 1 },
1665 { "-ib", "--internal-border", 10, 1 },
1666 { "-ms", "--mouse-color", 10, 1 },
1667 { "-cr", "--cursor-color", 10, 1 },
1668 { "-fn", "--font", 10, 1 },
1669 { "-font", 0, 10, 1 },
1670 { "-fs", "--fullscreen", 10, 0 },
1671 { "-fw", "--fullwidth", 10, 0 },
1672 { "-fh", "--fullheight", 10, 0 },
1673 { "-g", "--geometry", 10, 1 },
1674 { "-geometry", 0, 10, 1 },
1675 { "-T", "--title", 10, 1 },
1676 { "-title", 0, 10, 1 },
1677 { "-name", "--name", 10, 1 },
1678 { "-xrm", "--xrm", 10, 1 },
1679 { "-r", "--reverse-video", 5, 0 },
1681 { "-reverse", 0, 5, 0 },
1682 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1683 { "-vb", "--vertical-scroll-bars", 5, 0 },
1684 { "-color", "--color", 5, 0},
1685 /* These have the same priority as ordinary file name args,
1686 so they are not reordered with respect to those. */
1687 { "-L", "--directory", 0, 1 },
1688 { "-directory", 0, 0, 1 },
1689 { "-l", "--load", 0, 1 },
1690 { "-load", 0, 0, 1 },
1691 { "-f", "--funcall", 0, 1 },
1692 { "-funcall", 0, 0, 1 },
1693 { "-eval", "--eval", 0, 1 },
1694 { "-execute", "--execute", 0, 1 },
1695 { "-find-file", "--find-file", 0, 1 },
1696 { "-visit", "--visit", 0, 1 },
1697 { "-file", "--file", 0, 1 },
1698 { "-insert", "--insert", 0, 1 },
1699 /* This should be processed after ordinary file name args and the like. */
1700 { "-kill", "--kill", -10, 0 },
1703 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1704 so that the highest priority ones come first.
1705 Do not change the order of elements of equal priority.
1706 If an option takes an argument, keep it and its argument together.
1708 If an option that takes no argument appears more
1709 than once, eliminate all but one copy of it. */
1712 sort_args (argc
, argv
)
1716 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1717 /* For each element of argv,
1718 the corresponding element of options is:
1719 0 for an option that takes no arguments,
1720 1 for an option that takes one argument, etc.
1721 -1 for an ordinary non-option argument. */
1722 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1723 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1725 int incoming_used
= 1;
1729 /* Categorize all the options,
1730 and figure out which argv elts are option arguments. */
1731 for (from
= 1; from
< argc
; from
++)
1735 if (argv
[from
][0] == '-')
1740 /* If we have found "--", don't consider
1741 any more arguments as options. */
1742 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1744 /* Leave the "--", and everything following it, at the end. */
1745 for (; from
< argc
; from
++)
1747 priority
[from
] = -100;
1753 /* Look for a match with a known old-fashioned option. */
1754 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1755 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1757 options
[from
] = standard_args
[i
].nargs
;
1758 priority
[from
] = standard_args
[i
].priority
;
1759 if (from
+ standard_args
[i
].nargs
>= argc
)
1760 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1761 from
+= standard_args
[i
].nargs
;
1765 /* Look for a match with a known long option.
1766 MATCH is -1 if no match so far, -2 if two or more matches so far,
1767 >= 0 (the table index of the match) if just one match so far. */
1768 if (argv
[from
][1] == '-')
1771 thislen
= strlen (argv
[from
]);
1772 equals
= index (argv
[from
], '=');
1774 thislen
= equals
- argv
[from
];
1777 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1778 if (standard_args
[i
].longname
1779 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1788 /* If we found exactly one match, use that. */
1791 options
[from
] = standard_args
[match
].nargs
;
1792 priority
[from
] = standard_args
[match
].priority
;
1793 /* If --OPTION=VALUE syntax is used,
1794 this option uses just one argv element. */
1797 if (from
+ options
[from
] >= argc
)
1798 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1799 from
+= options
[from
];
1806 /* Copy the arguments, in order of decreasing priority, to NEW. */
1808 while (incoming_used
< argc
)
1811 int best_priority
= -9999;
1813 /* Find the highest priority remaining option.
1814 If several have equal priority, take the first of them. */
1815 for (from
= 1; from
< argc
; from
++)
1817 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1819 best_priority
= priority
[from
];
1822 /* Skip option arguments--they are tied to the options. */
1823 if (options
[from
] > 0)
1824 from
+= options
[from
];
1830 /* Copy the highest priority remaining option, with its args, to NEW.
1831 Unless it is a duplicate of the previous one. */
1832 if (! (options
[best
] == 0
1833 && ! strcmp (new[to
- 1], argv
[best
])))
1835 new[to
++] = argv
[best
];
1836 for (i
= 0; i
< options
[best
]; i
++)
1837 new[to
++] = argv
[best
+ i
+ 1];
1840 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1842 /* Clear out this option in ARGV. */
1844 for (i
= 0; i
< options
[best
]; i
++)
1845 argv
[best
+ i
+ 1] = 0;
1848 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1852 bcopy (new, argv
, sizeof (char *) * argc
);
1859 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1860 doc
: /* Exit the Emacs job and kill it.
1861 If ARG is an integer, return ARG as the exit program code.
1862 If ARG is a string, stuff it as keyboard input.
1864 The value of `kill-emacs-hook', if not void,
1865 is a list of functions (of no args),
1866 all of which are called before Emacs is actually killed. */)
1870 struct gcpro gcpro1
;
1877 if (!NILP (Vrun_hooks
) && !noninteractive
)
1878 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1882 /* Is it really necessary to do this deassign
1883 when we are going to exit anyway? */
1888 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1890 /* If we have an auto-save list file,
1891 kill it because we are exiting Emacs deliberately (not crashing).
1892 Do it after shut_down_emacs, which does an auto-save. */
1893 if (STRINGP (Vauto_save_list_file_name
))
1894 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1896 exit (INTEGERP (arg
) ? XINT (arg
)
1907 /* Perform an orderly shutdown of Emacs. Autosave any modified
1908 buffers, kill any child processes, clean up the terminal modes (if
1909 we're in the foreground), and other stuff like that. Don't perform
1910 any redisplay; this may be called when Emacs is shutting down in
1911 the background, or after its X connection has died.
1913 If SIG is a signal number, print a message for it.
1915 This is called by fatal signal handlers, X protocol error handlers,
1919 shut_down_emacs (sig
, no_x
, stuff
)
1923 /* Prevent running of hooks from now on. */
1926 /* If we are controlling the terminal, reset terminal modes. */
1927 #ifdef EMACS_HAVE_TTY_PGRP
1929 int pgrp
= EMACS_GETPGRP (0);
1932 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1937 if (sig
&& sig
!= SIGTERM
)
1938 fprintf (stderr
, "Fatal error (%d).", sig
);
1946 stuff_buffered_input (stuff
);
1948 kill_buffer_processes (Qnil
);
1949 Fdo_auto_save (Qt
, Qnil
);
1951 #ifdef CLASH_DETECTION
1952 unlock_all_files ();
1956 kill_vms_processes ();
1959 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1960 #ifdef HAVE_X_WINDOWS
1961 /* It's not safe to call intern here. Maybe we are crashing. */
1962 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1963 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1964 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1966 Fx_close_current_connection ();
1967 #endif /* HAVE_X_WINDOWS */
1971 /* There is a tendency for a SIGIO signal to arrive within exit,
1972 and cause a SIGHUP because the input descriptor is already closed. */
1974 signal (SIGIO
, SIG_IGN
);
1981 /* Do this only if terminating normally, we want glyph matrices
1982 etc. in a core dump. */
1983 if (sig
== 0 || sig
== SIGTERM
)
1985 check_glyph_memory ();
1986 check_message_stack ();
2000 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2001 doc
: /* Dump current state of Emacs into data file FILENAME.
2002 This function exists on systems that use HAVE_SHM. */)
2004 Lisp_Object filename
;
2006 extern char my_edata
[];
2010 CHECK_STRING (filename
);
2011 filename
= Fexpand_file_name (filename
, Qnil
);
2014 Vpurify_flag
= Qnil
;
2017 /* Tell malloc where start of impure now is. */
2018 /* Also arrange for warnings when nearly out of space. */
2019 #ifndef SYSTEM_MALLOC
2020 memory_warnings (my_edata
, malloc_warning
);
2022 map_out_data (XSTRING (filename
)->data
);
2029 #else /* not HAVE_SHM */
2031 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2032 doc
: /* Dump current state of Emacs into executable file FILENAME.
2033 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2034 This is used in the file `loadup.el' when building Emacs.
2036 You must run Emacs in batch mode in order to dump it. */)
2038 Lisp_Object filename
, symfile
;
2040 extern char my_edata
[];
2043 int count
= BINDING_STACK_SIZE ();
2047 if (! noninteractive
)
2048 error ("Dumping Emacs works only in batch mode");
2050 /* Bind `command-line-processed' to nil before dumping,
2051 so that the dumped Emacs will process its command line
2052 and set up to work with X windows if appropriate. */
2053 symbol
= intern ("command-line-process");
2054 specbind (symbol
, Qnil
);
2056 CHECK_STRING (filename
);
2057 filename
= Fexpand_file_name (filename
, Qnil
);
2058 if (!NILP (symfile
))
2060 CHECK_STRING (symfile
);
2061 if (XSTRING (symfile
)->size
)
2062 symfile
= Fexpand_file_name (symfile
, Qnil
);
2066 Vpurify_flag
= Qnil
;
2069 set_time_zone_rule (dump_tz
);
2070 #ifndef LOCALTIME_CACHE
2071 /* Force a tz reload, since set_time_zone_rule doesn't. */
2078 mapout_data (XSTRING (filename
)->data
);
2080 /* Tell malloc where start of impure now is. */
2081 /* Also arrange for warnings when nearly out of space. */
2082 #ifndef SYSTEM_MALLOC
2084 /* On Windows, this was done before dumping, and that once suffices.
2085 Meanwhile, my_edata is not valid on Windows. */
2086 memory_warnings (my_edata
, malloc_warning
);
2087 #endif /* not WINDOWSNT */
2089 #ifdef DOUG_LEA_MALLOC
2090 malloc_state_ptr
= malloc_get_state ();
2093 #ifdef USE_MMAP_FOR_BUFFERS
2096 unexec (XSTRING (filename
)->data
,
2097 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
2098 #ifdef USE_MMAP_FOR_BUFFERS
2101 #ifdef DOUG_LEA_MALLOC
2102 free (malloc_state_ptr
);
2104 #endif /* not VMS */
2108 return unbind_to (count
, Qnil
);
2111 #endif /* not HAVE_SHM */
2113 #endif /* not CANNOT_DUMP */
2116 /* Recover from setlocale (LC_ALL, ""). */
2120 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2121 so that numbers are read and printed properly for Emacs Lisp. */
2122 setlocale (LC_NUMERIC
, "C");
2125 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2128 synchronize_locale (category
, plocale
, desired_locale
)
2130 Lisp_Object
*plocale
;
2131 Lisp_Object desired_locale
;
2133 if (! EQ (*plocale
, desired_locale
))
2135 *plocale
= desired_locale
;
2136 setlocale (category
, (STRINGP (desired_locale
)
2137 ? (char *)(XSTRING (desired_locale
)->data
)
2142 /* Set system time locale to match Vsystem_time_locale, if possible. */
2144 synchronize_system_time_locale ()
2146 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2147 Vsystem_time_locale
);
2150 /* Set system messages locale to match Vsystem_messages_locale, if
2153 synchronize_system_messages_locale ()
2156 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2157 Vsystem_messages_locale
);
2160 #endif /* HAVE_SETLOCALE */
2167 decode_env_path (evarname
, defalt
)
2168 char *evarname
, *defalt
;
2170 register char *path
, *p
;
2171 Lisp_Object lpath
, element
, tem
;
2173 /* It's okay to use getenv here, because this function is only used
2174 to initialize variables when Emacs starts up, and isn't called
2177 path
= (char *) getenv (evarname
);
2183 /* Ensure values from the environment use the proper directory separator. */
2186 p
= alloca (strlen (path
) + 1);
2190 if ('/' == DIRECTORY_SEP
)
2191 dostounix_filename (path
);
2193 unixtodos_filename (path
);
2199 p
= index (path
, SEPCHAR
);
2200 if (!p
) p
= path
+ strlen (path
);
2201 element
= (p
- path
? make_string (path
, p
- path
)
2202 : build_string ("."));
2204 /* Add /: to the front of the name
2205 if it would otherwise be treated as magic. */
2206 tem
= Ffind_file_name_handler (element
, Qt
);
2208 element
= concat2 (build_string ("/:"), element
);
2210 lpath
= Fcons (element
, lpath
);
2216 return Fnreverse (lpath
);
2222 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2223 staticpro (&Qfile_name_handler_alist
);
2227 defsubr (&Sdump_emacs_data
);
2229 defsubr (&Sdump_emacs
);
2233 defsubr (&Skill_emacs
);
2235 defsubr (&Sinvocation_name
);
2236 defsubr (&Sinvocation_directory
);
2238 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2239 doc
: /* Args passed by shell to Emacs, as a list of strings. */);
2241 DEFVAR_LISP ("system-type", &Vsystem_type
,
2242 doc
: /* Value is symbol indicating type of operating system you are using. */);
2243 Vsystem_type
= intern (SYSTEM_TYPE
);
2245 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2246 doc
: /* Value is string indicating configuration Emacs was built for.
2247 On MS-Windows, the value reflects the OS flavor and version on which
2248 Emacs is running. */);
2249 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2251 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2252 doc
: /* String containing the configuration options Emacs was built with. */);
2253 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2255 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2256 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2258 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2259 doc
: /* Hook to be run whenever kill-emacs is called.
2260 Since kill-emacs may be invoked when the terminal is disconnected (or
2261 in other similar situations), functions placed on this hook should not
2262 expect to be able to interact with the user. To ask for confirmation,
2263 see `kill-emacs-query-functions' instead. */);
2264 Vkill_emacs_hook
= Qnil
;
2266 empty_string
= build_string ("");
2267 staticpro (&empty_string
);
2270 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2271 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2272 Vsignal_USR1_hook
= Qnil
;
2274 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2275 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2276 Vsignal_USR2_hook
= Qnil
;
2281 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2282 doc
: /* Priority for Emacs to run at.
2283 This value is effective only if set before Emacs is dumped,
2284 and only if the Emacs executable is installed with setuid to permit
2285 it to change priority. (Emacs sets its uid back to the real uid.)
2286 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2287 before you compile Emacs, to enable the code for this feature. */);
2290 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2291 doc
: /* The directory separator in search paths, as a string. */);
2294 Vpath_separator
= make_string (&c
, 1);
2297 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2298 doc
: /* The program name that was used to run Emacs.
2299 Any directory names are omitted. */);
2301 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2302 doc
: /* The directory in which the Emacs executable was found, to run it.
2303 The value is nil if that directory's name is not known. */);
2305 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2306 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2307 This is non-nil when we can't find those directories in their standard
2308 installed locations, but we can find them
2309 near where the Emacs executable was found. */);
2310 Vinstallation_directory
= Qnil
;
2312 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2313 doc
: /* System locale for messages. */);
2314 Vsystem_messages_locale
= Qnil
;
2316 DEFVAR_LISP ("previous-system-messages-locale",
2317 &Vprevious_system_messages_locale
,
2318 doc
: /* Most recently used system locale for messages. */);
2319 Vprevious_system_messages_locale
= Qnil
;
2321 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2322 doc
: /* System locale for time. */);
2323 Vsystem_time_locale
= Qnil
;
2325 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2326 doc
: /* Most recently used system locale for time. */);
2327 Vprevious_system_time_locale
= Qnil
;