1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
27 #include <sys/types.h>
39 #include <sys/ioctl.h>
44 #include "intervals.h"
48 #include "blockinput.h"
49 #include "syssignal.h"
51 #include "termhooks.h"
60 #include <sys/resource.h>
67 extern void malloc_warning ();
68 extern void set_time_zone_rule ();
69 extern char *index ();
71 /* Make these values available in GDB, which doesn't see macros. */
73 EMACS_INT gdb_valbits
= VALBITS
;
74 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
75 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
77 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
79 EMACS_INT gdb_data_seg_bits
= 0;
81 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
83 /* Command line args from shell, as list of strings */
84 Lisp_Object Vcommand_line_args
;
86 /* The name under which Emacs was invoked, with any leading directory
88 Lisp_Object Vinvocation_name
;
90 /* The directory name from which Emacs was invoked. */
91 Lisp_Object Vinvocation_directory
;
93 /* The directory name in which to find subdirs such as lisp and etc.
94 nil means get them only from PATH_LOADSEARCH. */
95 Lisp_Object Vinstallation_directory
;
97 /* Hook run by `kill-emacs' before it does really anything. */
98 Lisp_Object Vkill_emacs_hook
;
101 /* Hooks for signal USR1 and USR2 handing */
102 Lisp_Object Vsignal_USR1_hook
;
104 Lisp_Object Vsignal_USR2_hook
;
108 /* Search path separator. */
109 Lisp_Object Vpath_separator
;
111 /* Set nonzero after Emacs has started up the first time.
112 Prevents reinitialization of the Lisp world and keymaps
113 on subsequent starts. */
116 #ifdef DOUG_LEA_MALLOC
117 /* Preserves a pointer to the memory allocated that copies that
118 static data inside glibc's malloc. */
119 void *malloc_state_ptr
;
120 /* From glibc, a routine that returns a copy of the malloc internal state. */
121 extern void *malloc_get_state ();
122 /* From glibc, a routine that overwrites the malloc internal state. */
123 extern void malloc_set_state ();
124 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
125 dumping. Used to work around a bug in glibc's malloc. */
126 int malloc_using_checking
;
129 /* Variable whose value is symbol giving operating system type. */
130 Lisp_Object Vsystem_type
;
132 /* Variable whose value is string giving configuration built for. */
133 Lisp_Object Vsystem_configuration
;
135 /* Variable whose value is string giving configuration options,
136 for use when reporting bugs. */
137 Lisp_Object Vsystem_configuration_options
;
139 Lisp_Object Qfile_name_handler_alist
;
141 /* Current and previous system locales for messages and time. */
142 Lisp_Object Vsystem_messages_locale
;
143 Lisp_Object Vprevious_system_messages_locale
;
144 Lisp_Object Vsystem_time_locale
;
145 Lisp_Object Vprevious_system_time_locale
;
147 /* If non-zero, emacs should not attempt to use an window-specific code,
148 but instead should use the virtual terminal under which it was started */
149 int inhibit_window_system
;
151 /* If nonzero, set Emacs to run at this priority. This is also used
152 in child_setup and sys_suspend to make sure subshells run at normal
153 priority; Those functions have their own extern declaration. */
156 /* If non-zero a filter or a sentinel is running. Tested to save the match
157 data on the first attempt to change it inside asynchronous code. */
158 int running_asynch_code
;
162 extern int inherited_pgroup
;
165 #ifdef HAVE_X_WINDOWS
166 /* If non-zero, -d was specified, meaning we're using some window system. */
170 /* An address near the bottom of the stack.
171 Tells GC how to save a copy of the stack. */
174 #ifdef HAVE_WINDOW_SYSTEM
175 extern Lisp_Object Vwindow_system
;
176 #endif /* HAVE_WINDOW_SYSTEM */
178 extern Lisp_Object Vauto_save_list_file_name
;
180 #ifdef USG_SHARED_LIBRARIES
181 /* If nonzero, this is the place to put the end of the writable segment
184 unsigned int bss_end
= 0;
187 /* Nonzero means running Emacs without interactive terminal. */
191 /* Value of Lisp variable `noninteractive'.
192 Normally same as C variable `noninteractive'
193 but nothing terrible happens if user sets this one. */
197 /* Save argv and argc. */
201 static void sort_args ();
202 void syms_of_emacs ();
205 Usage: %s [OPTION-OR-FILENAME]...\n\
207 Run Emacs, the extensible, customizable, self-documenting real-time\n\
208 display editor. The recommended way to start Emacs for normal editing\n\
209 is with no options at all.\n\
211 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
212 read the main documentation for these command-line arguments.\n\
214 Initialization options:\n\
216 --batch do not do interactive display; implies -q\n\
217 --debug-init enable Emacs Lisp debugger during init file\n\
218 --help display this help message and exit\n\
219 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
220 --no-init-file, -q load neither ~/.emacs nor default.el\n\
221 --no-shared-memory, -nl do not use shared memory\n\
222 --no-site-file do not load site-start.el\n\
223 --no-windows, -nw don't communicate with X, ignoring $DISPLAY\n\
224 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
225 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
226 --user, -u USER load ~USER/.emacs instead of your own\n\
227 --version display version information and exit\n\
231 FILE visit FILE using find-file\n\
232 +LINENUM FILE visit FILE using find-file, then go to line LINENUM\n\
233 --directory, -L DIR add DIR to variable load-path\n\
234 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
235 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
236 --find-file FILE visit FILE\n\
237 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
238 --insert FILE insert contents of FILE into current buffer\n\
239 --kill exit without asking for confirmation\n\
240 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
241 --visit FILE visit FILE\n\
247 --background-color, -bg COLOR window background color\n\
248 --border-color, -bd COLOR main border color\n\
249 --border-width, -bw WIDTH width of main border\n\
250 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
251 --display, -d DISPLAY use X server DISPLAY\n\
252 --font, -fn FONT default font; must be fixed-widthp\n\
253 --foreground-color, -fg COLOR window foreground color\n\
254 --geometry, -g GEOMETRY window geometry\n\
255 --iconic start Emacs in iconified state\n\
256 --icon-type, -i use picture of gnu for Emacs icon\n\
257 --internal-border, -ib WIDTH width between text and main border\n\
258 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
259 --name NAME title of main Emacs window\n\
260 --reverse-video, -r, -rv switch foreground and background\n\
261 --title, -T, -wn, TITLE title for Emacs windows\n\
262 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
263 --xrm XRESOURCES set additional X resources\n\
265 You can generally also specify long option names with a single -; for\n\
266 example, -batch as well as --batch. You can use any unambiguous\n\
267 abbreviation for a --option.\n\
269 Various environment variables and window system resources also affect\n\
270 Emacs' operation. See the main documentation.\n\
272 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
273 section of the Emacs manual or the file BUGS.\n"
276 /* Signal code for the fatal signal that was received */
277 int fatal_error_code
;
279 /* Nonzero if handling a fatal error already */
280 int fatal_error_in_progress
;
284 handle_USR1_signal (sig
)
287 struct input_event buf
;
289 buf
.kind
= user_signal
;
291 buf
.frame_or_window
= selected_frame
;
295 kbd_buffer_store_event (&buf
);
301 handle_USR2_signal (sig
)
304 struct input_event buf
;
306 buf
.kind
= user_signal
;
308 buf
.frame_or_window
= selected_frame
;
312 kbd_buffer_store_event (&buf
);
316 /* Handle bus errors, illegal instruction, etc. */
318 fatal_error_signal (sig
)
321 fatal_error_code
= sig
;
322 signal (sig
, SIG_DFL
);
324 TOTALLY_UNBLOCK_INPUT
;
326 /* If fatal error occurs in code below, avoid infinite recursion. */
327 if (! fatal_error_in_progress
)
329 fatal_error_in_progress
= 1;
331 shut_down_emacs (sig
, 0, Qnil
);
335 LIB$
STOP (SS$_ABORT
);
337 /* Signal the same code; this time it will really be fatal.
338 Remember that since we're in a signal handler, the signal we're
339 going to send is probably blocked, so we have to unblock it if we
340 want to really receive it. */
342 sigunblock (sigmask (fatal_error_code
));
344 kill (getpid (), fatal_error_code
);
350 /* Handler for SIGDANGER. */
352 memory_warning_signal (sig
)
355 signal (sig
, memory_warning_signal
);
357 malloc_warning ("Operating system warns that virtual memory is running low.\n");
359 /* It might be unsafe to call do_auto_save now. */
360 force_auto_save_soon ();
364 /* We define abort, rather than using it from the library,
365 so that GDB can return from a breakpoint here.
366 MSDOS has its own definition on msdos.c */
368 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
370 #ifndef ABORT_RETURN_TYPE
371 #define ABORT_RETURN_TYPE void
377 kill (getpid (), SIGABRT
);
378 /* This shouldn't be executed, but it prevents a warning. */
384 /* Code for dealing with Lisp access to the Unix command line */
387 init_cmdargs (argc
, argv
, skip_args
)
393 Lisp_Object name
, dir
, tem
;
394 int count
= specpdl_ptr
- specpdl
;
395 Lisp_Object raw_name
;
400 raw_name
= build_string (argv
[0]);
402 /* Add /: to the front of the name
403 if it would otherwise be treated as magic. */
404 tem
= Ffind_file_name_handler (raw_name
, Qt
);
406 raw_name
= concat2 (build_string ("/:"), raw_name
);
408 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
409 Vinvocation_directory
= Ffile_name_directory (raw_name
);
411 /* If we got no directory in argv[0], search PATH to find where
412 Emacs actually came from. */
413 if (NILP (Vinvocation_directory
))
416 int yes
= openp (Vexec_path
, Vinvocation_name
,
417 EXEC_SUFFIXES
, &found
, 1);
420 /* Add /: to the front of the name
421 if it would otherwise be treated as magic. */
422 tem
= Ffind_file_name_handler (found
, Qt
);
424 found
= concat2 (build_string ("/:"), found
);
425 Vinvocation_directory
= Ffile_name_directory (found
);
429 if (!NILP (Vinvocation_directory
)
430 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
431 /* Emacs was started with relative path, like ./emacs.
433 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
435 Vinstallation_directory
= Qnil
;
437 if (!NILP (Vinvocation_directory
))
439 dir
= Vinvocation_directory
;
440 name
= Fexpand_file_name (Vinvocation_name
, dir
);
443 Lisp_Object tem
, lib_src_exists
;
444 Lisp_Object etc_exists
, info_exists
;
446 /* See if dir contains subdirs for use by Emacs.
447 Check for the ones that would exist in a build directory,
448 not including lisp and info. */
449 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
450 lib_src_exists
= Ffile_exists_p (tem
);
453 /* MSDOS installations frequently remove lib-src, but we still
454 must set installation-directory, or else info won't find
455 its files (it uses the value of installation-directory). */
456 tem
= Fexpand_file_name (build_string ("info"), dir
);
457 info_exists
= Ffile_exists_p (tem
);
462 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
464 tem
= Fexpand_file_name (build_string ("etc"), dir
);
465 etc_exists
= Ffile_exists_p (tem
);
466 if (!NILP (etc_exists
))
468 Vinstallation_directory
469 = Ffile_name_as_directory (dir
);
474 /* See if dir's parent contains those subdirs. */
475 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
476 lib_src_exists
= Ffile_exists_p (tem
);
480 /* See the MSDOS commentary above. */
481 tem
= Fexpand_file_name (build_string ("../info"), dir
);
482 info_exists
= Ffile_exists_p (tem
);
487 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
489 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
490 etc_exists
= Ffile_exists_p (tem
);
491 if (!NILP (etc_exists
))
493 tem
= Fexpand_file_name (build_string (".."), dir
);
494 Vinstallation_directory
495 = Ffile_name_as_directory (tem
);
500 /* If the Emacs executable is actually a link,
501 next try the dir that the link points into. */
502 tem
= Ffile_symlink_p (name
);
505 name
= Fexpand_file_name (tem
, dir
);
506 dir
= Ffile_name_directory (name
);
513 Vcommand_line_args
= Qnil
;
515 for (i
= argc
- 1; i
>= 0; i
--)
517 if (i
== 0 || i
> skip_args
)
519 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
522 unbind_to (count
, Qnil
);
525 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
526 "Return the program name that was used to run Emacs.\n\
527 Any directory names are omitted.")
530 return Fcopy_sequence (Vinvocation_name
);
533 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
535 "Return the directory name in which the Emacs executable was located")
538 return Fcopy_sequence (Vinvocation_directory
);
543 #ifdef LINK_CRTL_SHARE
544 #ifdef SHARABLE_LIB_BUG
545 extern noshare
char **environ
;
546 #endif /* SHARABLE_LIB_BUG */
547 #endif /* LINK_CRTL_SHARE */
551 /* A valid but unlikely value for the TZ environment value.
552 It is OK (though a bit slower) if the user actually chooses this value. */
553 static char dump_tz
[] = "UtC0";
556 #ifndef ORDINARY_LINK
557 /* We don't include crtbegin.o and crtend.o in the link,
558 so these functions and variables might be missed.
559 Provide dummy definitions to avoid error.
560 (We don't have any real constructors or destructors.) */
562 #ifndef GCC_CTORS_IN_LIBC
563 void __do_global_ctors ()
565 void __do_global_ctors_aux ()
567 void __do_global_dtors ()
569 /* Linux has a bug in its library; avoid an error. */
571 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
573 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
574 #endif /* GCC_CTORS_IN_LIBC */
577 #endif /* __GNUC__ */
578 #endif /* ORDINARY_LINK */
580 /* Test whether the next argument in ARGV matches SSTR or a prefix of
581 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
582 (the argument is supposed to have a value) store in *VALPTR either
583 the next argument or the portion of this one after the equal sign.
584 ARGV is read starting at position *SKIPPTR; this index is advanced
585 by the number of arguments used.
587 Too bad we can't just use getopt for all of this, but we don't have
588 enough information to do it right. */
591 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
604 /* Don't access argv[argc]; give up in advance. */
605 if (argc
<= *skipptr
+ 1)
608 arg
= argv
[*skipptr
+1];
611 if (strcmp (arg
, sstr
) == 0)
615 *valptr
= argv
[*skipptr
+2];
622 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
623 ? p
- arg
: strlen (arg
));
624 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
626 else if (valptr
== NULL
)
637 else if (argv
[*skipptr
+2] != NULL
)
639 *valptr
= argv
[*skipptr
+2];
649 #ifdef DOUG_LEA_MALLOC
651 /* malloc can be invoked even before main (e.g. by the dynamic
652 linker), so the dumped malloc state must be restored as early as
653 possible using this special hook. */
656 malloc_initialize_hook ()
658 extern char **environ
;
662 if (!malloc_using_checking
)
663 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
664 ignored if the heap to be restored was constructed without
665 malloc checking. Can't use unsetenv, since that calls malloc. */
669 for (p
= environ
; *p
; p
++)
670 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
679 malloc_set_state (malloc_state_ptr
);
680 free (malloc_state_ptr
);
683 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
686 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
688 #endif /* DOUG_LEA_MALLOC */
692 main (argc
, argv
, envp
)
700 char stack_bottom_variable
;
701 int do_initial_setlocale
;
705 #ifdef HAVE_SETRLIMIT
711 extern Lisp_Object
*stack_base
;
715 #ifdef LINUX_SBRK_BUG
719 #ifdef RUN_TIME_REMAP
721 run_time_remap (argv
[0]);
724 sort_args (argc
, argv
);
726 while (argv
[argc
]) argc
++;
728 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
729 /* We don't know the version number unless this is a dumped Emacs.
730 So ignore --version otherwise. */
734 tem
= Fsymbol_value (intern ("emacs-version"));
737 fprintf (stderr
, "Invalid value of `emacs-version'\n");
742 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
743 printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
744 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
745 printf ("You may redistribute copies of Emacs\n");
746 printf ("under the terms of the GNU General Public License.\n");
747 printf ("For more information about these matters, ");
748 printf ("see the file named COPYING.\n");
753 /* Map in shared memory, if we are using that. */
755 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
758 /* The shared memory was just restored, which clobbered this. */
764 /* The shared memory was just restored, which clobbered this. */
771 extern int malloc_cookie
;
772 /* This helps out unexnext.c. */
774 if (malloc_jumpstart (malloc_cookie
) != 0)
775 printf ("malloc jumpstart failed!\n");
780 /* If -map specified, map the data file in */
783 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
787 #ifdef LINK_CRTL_SHARE
788 #ifdef SHARABLE_LIB_BUG
789 /* Bletcherous shared libraries! */
791 stdin
= fdopen (0, "r");
793 stdout
= fdopen (1, "w");
795 stderr
= fdopen (2, "w");
798 #endif /* SHARABLE_LIB_BUG */
799 #endif /* LINK_CRTL_SHARE */
802 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
803 /* Extend the stack space available.
804 Don't do that if dumping, since some systems (e.g. DJGPP)
805 might define a smaller stack limit at that time. */
808 && (!noninteractive
|| initialized
)
810 && !getrlimit (RLIMIT_STACK
, &rlim
))
813 extern int re_max_failures
;
814 /* Approximate the amount regex.c needs per unit of re_max_failures. */
815 int ratio
= 20 * sizeof (char *);
816 /* Then add 33% to cover the size of the smaller stacks that regex.c
817 successively allocates and discards, on its way to the maximum. */
819 /* Add in some extra to cover
820 what we're likely to use for other reasons. */
821 newlim
= re_max_failures
* ratio
+ 200000;
823 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
824 stack allocation routine for new process that the allocation
825 fails if stack limit is not on page boundary. So, round up the
826 new limit to page boundary. */
827 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
829 if (newlim
> rlim
.rlim_max
)
831 newlim
= rlim
.rlim_max
;
832 /* Don't let regex.c overflow the stack we have. */
833 re_max_failures
= (newlim
- 200000) / ratio
;
835 if (rlim
.rlim_cur
< newlim
)
836 rlim
.rlim_cur
= newlim
;
838 setrlimit (RLIMIT_STACK
, &rlim
);
840 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
842 /* Record (approximately) where the stack begins. */
843 stack_bottom
= &stack_bottom_variable
;
845 #ifdef USG_SHARED_LIBRARIES
847 brk ((void *)bss_end
);
852 #ifndef SYSTEM_MALLOC
853 /* Arrange to get warning messages as memory fills up. */
854 memory_warnings (0, malloc_warning
);
856 /* Call malloc at least once, to run the initial __malloc_hook.
857 Also call realloc and free for consistency. */
858 free (realloc (malloc (4), 4));
860 /* Arrange to disable interrupt input inside malloc etc. */
861 uninterrupt_malloc ();
862 #endif /* not SYSTEM_MALLOC */
865 /* We do all file input/output as binary files. When we need to translate
866 newlines, we do that manually. */
870 if (!isatty (fileno (stdin
)))
871 setmode (fileno (stdin
), O_BINARY
);
872 if (!isatty (fileno (stdout
)))
875 setmode (fileno (stdout
), O_BINARY
);
877 #else /* not __DJGPP__ >= 2 */
878 (stdin
)->_flag
&= ~_IOTEXT
;
879 (stdout
)->_flag
&= ~_IOTEXT
;
880 (stderr
)->_flag
&= ~_IOTEXT
;
881 #endif /* not __DJGPP__ >= 2 */
884 #ifdef SET_EMACS_PRIORITY
886 nice (emacs_priority
);
888 #endif /* SET_EMACS_PRIORITY */
890 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
891 The build procedure uses this while dumping, to ensure that the
892 dumped Emacs does not have its system locale tables initialized,
893 as that might cause screwups when the dumped Emacs starts up. */
895 char *lc_all
= getenv ("LC_ALL");
896 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
899 /* Set locale now, so that initial error messages are localized properly.
900 fixup_locale must wait until later, since it builds strings. */
901 if (do_initial_setlocale
)
902 setlocale (LC_ALL
, "");
904 #ifdef EXTRA_INITIALIZE
908 inhibit_window_system
= 0;
910 /* Handle the -t switch, which specifies filename to use as terminal */
914 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
919 result
= emacs_open (term
, O_RDWR
, 0);
922 char *errstring
= strerror (errno
);
923 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
929 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
932 fprintf (stderr
, "Using %s\n", term
);
933 #ifdef HAVE_WINDOW_SYSTEM
934 inhibit_window_system
= 1; /* -t => -nw */
941 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
942 inhibit_window_system
= 1;
944 /* Handle the -batch switch, which means don't do interactive display. */
946 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
949 /* Handle the --help option, which gives a usage message.. */
950 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
952 printf (USAGE1
, argv
[0]);
957 if (! noninteractive
)
962 inherited_pgroup
= EMACS_GETPGRP (0);
963 setpgrp (0, getpid ());
966 #if defined (USG5) && defined (INTERRUPT_INPUT)
974 /* Don't catch SIGHUP if dumping. */
981 sigblock (sigmask (SIGHUP
));
982 /* In --batch mode, don't catch SIGHUP if already ignored.
983 That makes nohup work. */
985 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
986 signal (SIGHUP
, fatal_error_signal
);
987 sigunblock (sigmask (SIGHUP
));
992 ! noninteractive
|| initialized
998 /* Don't catch these signals in batch mode if dumping.
999 On some machines, this sets static data that would make
1000 signal fail to work right when the dumped Emacs is run. */
1001 signal (SIGQUIT
, fatal_error_signal
);
1002 signal (SIGILL
, fatal_error_signal
);
1003 signal (SIGTRAP
, fatal_error_signal
);
1005 signal (SIGUSR1
, handle_USR1_signal
);
1007 signal (SIGUSR2
, handle_USR2_signal
);
1011 signal (SIGABRT
, fatal_error_signal
);
1014 signal (SIGHWE
, fatal_error_signal
);
1017 signal (SIGPRE
, fatal_error_signal
);
1020 signal (SIGORE
, fatal_error_signal
);
1023 signal (SIGUME
, fatal_error_signal
);
1026 signal (SIGDLK
, fatal_error_signal
);
1029 signal (SIGCPULIM
, fatal_error_signal
);
1032 /* This is missing on some systems - OS/2, for example. */
1033 signal (SIGIOT
, fatal_error_signal
);
1036 signal (SIGEMT
, fatal_error_signal
);
1038 signal (SIGFPE
, fatal_error_signal
);
1040 signal (SIGBUS
, fatal_error_signal
);
1042 signal (SIGSEGV
, fatal_error_signal
);
1044 signal (SIGSYS
, fatal_error_signal
);
1046 signal (SIGTERM
, fatal_error_signal
);
1048 signal (SIGXCPU
, fatal_error_signal
);
1051 signal (SIGXFSZ
, fatal_error_signal
);
1052 #endif /* SIGXFSZ */
1055 /* This just means available memory is getting low. */
1056 signal (SIGDANGER
, memory_warning_signal
);
1060 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1061 signal (SIGXCPU
, fatal_error_signal
);
1063 signal (SIGIOINT
, fatal_error_signal
);
1065 signal (SIGGRANT
, fatal_error_signal
);
1066 signal (SIGRETRACT
, fatal_error_signal
);
1067 signal (SIGSOUND
, fatal_error_signal
);
1068 signal (SIGMSG
, fatal_error_signal
);
1072 noninteractive1
= noninteractive
;
1074 /* Perform basic initializations (not merely interning symbols) */
1081 init_charset_once ();
1082 init_coding_once ();
1083 init_syntax_once (); /* Create standard syntax table. */
1084 init_category_once (); /* Create standard category table. */
1085 /* Must be done before init_buffer */
1086 init_casetab_once ();
1087 init_buffer_once (); /* Create buffer table and some buffers */
1088 init_minibuf_once (); /* Create list of minibuffers */
1089 /* Must precede init_window_once */
1091 /* Call syms_of_xfaces before init_window_once because that
1092 function creates Vterminal_frame. Termcap frames now use
1093 faces, and the face implementation uses some symbols as
1099 init_window_once (); /* Init the window system */
1100 init_fileio_once (); /* Must precede any path manipulation. */
1105 if (do_initial_setlocale
)
1108 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1109 Vsystem_time_locale
= Vprevious_system_time_locale
;
1115 #ifdef CLASH_DETECTION
1119 running_asynch_code
= 0;
1121 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1122 but not while dumping. */
1125 ! noninteractive
|| initialized
1131 int inhibit_unibyte
= 0;
1133 /* --multibyte overrides EMACS_UNIBYTE. */
1134 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1135 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1136 inhibit_unibyte
= 1;
1138 /* --unibyte requests that we set up to do everything with single-byte
1139 buffers and strings. We need to handle this before calling
1140 init_lread, init_editfns and other places that generate Lisp strings
1141 from text in the environment. */
1142 /* Actually this shouldn't be needed as of 20.4 in a generally
1143 unibyte environment. As handa says, environment values
1144 aren't now decoded; also existing buffers are now made
1145 unibyte during startup if .emacs sets unibyte. Tested with
1146 8-bit data in environment variables and /etc/passwd, setting
1147 unibyte and Latin-1 in .emacs. -- Dave Love */
1148 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1149 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1150 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1152 Lisp_Object old_log_max
;
1153 Lisp_Object symbol
, tail
;
1155 symbol
= intern ("default-enable-multibyte-characters");
1156 Fset (symbol
, Qnil
);
1160 /* Erase pre-dump messages in *Messages* now so no abort. */
1161 old_log_max
= Vmessage_log_max
;
1162 XSETFASTINT (Vmessage_log_max
, 0);
1163 message_dolog ("", 0, 1, 0);
1164 Vmessage_log_max
= old_log_max
;
1167 for (tail
= Vbuffer_alist
; CONSP (tail
);
1172 buffer
= Fcdr (XCAR (tail
));
1173 /* Verify that all buffers are empty now, as they
1175 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1177 /* It is safe to do this crudely in an empty buffer. */
1178 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1184 = !argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1187 #ifdef HAVE_X_WINDOWS
1188 /* Stupid kludge to catch command-line display spec. We can't
1189 handle this argument entirely in window system dependent code
1190 because we don't even know which window system dependent code
1191 to run until we've recognized this argument. */
1193 char *displayname
= 0;
1194 int count_before
= skip_args
;
1196 /* Skip any number of -d options, but only use the last one. */
1199 int count_before_this
= skip_args
;
1201 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1203 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1208 count_before
= count_before_this
;
1211 /* If we have the form --display=NAME,
1212 convert it into -d name.
1213 This requires inserting a new element into argv. */
1214 if (displayname
!= 0 && skip_args
- count_before
== 1)
1216 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1219 for (j
= 0; j
< count_before
+ 1; j
++)
1221 new[count_before
+ 1] = "-d";
1222 new[count_before
+ 2] = displayname
;
1223 for (j
= count_before
+ 2; j
<argc
; j
++)
1224 new[j
+ 1] = argv
[j
];
1228 /* Change --display to -d, when its arg is separate. */
1229 else if (displayname
!= 0 && skip_args
> count_before
1230 && argv
[count_before
+ 1][1] == '-')
1231 argv
[count_before
+ 1] = "-d";
1233 /* Don't actually discard this arg. */
1234 skip_args
= count_before
;
1238 /* argmatch must not be used after here,
1239 except when bulding temacs
1240 because the -d argument has not been skipped in skip_args. */
1243 /* Call early 'cause init_environment needs it. */
1245 /* Set defaults for several environment variables. */
1247 init_environment (argc
, argv
, skip_args
);
1253 /* Initialize environment from registry settings. */
1254 init_environment (argv
);
1255 init_ntproc (); /* must precede init_editfns */
1258 /* egetenv is a pretty low-level facility, which may get called in
1259 many circumstances; it seems flimsy to put off initializing it
1260 until calling init_callproc. */
1261 set_process_environment ();
1262 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1263 if this is not done. Do it after set_process_environment so that we
1264 don't pollute Vprocess_environment. */
1265 /* Setting LANG here will defeat the startup locale processing... */
1270 init_buffer (); /* Init default directory of main buffer */
1272 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1273 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1277 /* Erase any pre-dump messages in the message log, to avoid confusion */
1278 Lisp_Object old_log_max
;
1279 old_log_max
= Vmessage_log_max
;
1280 XSETFASTINT (Vmessage_log_max
, 0);
1281 message_dolog ("", 0, 1, 0);
1282 Vmessage_log_max
= old_log_max
;
1285 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1288 /* Intern the names of all standard functions and variables;
1289 define standard keys. */
1293 /* The basic levels of Lisp must come first */
1294 /* And data must come first of all
1295 for the sake of symbols like error-message */
1302 syms_of_floatfns ();
1306 syms_of_bytecode ();
1308 syms_of_casefiddle ();
1310 syms_of_callproc ();
1311 syms_of_category ();
1315 #ifndef NO_DIR_LIBRARY
1317 #endif /* not NO_DIR_LIBRARY */
1323 syms_of_coding (); /* This should be after syms_of_fileio. */
1324 #ifdef CLASH_DETECTION
1325 syms_of_filelock ();
1326 #endif /* CLASH_DETECTION */
1329 syms_of_keyboard ();
1334 syms_of_mocklisp ();
1345 syms_of_textprop ();
1346 syms_of_composite ();
1352 #endif /* WINDOWSNT */
1355 #ifdef HAVE_X_WINDOWS
1362 #endif /* HAVE_X_WINDOWS */
1371 syms_of_w32faces ();
1372 syms_of_w32select ();
1375 #endif /* HAVE_NTGUI */
1385 keys_of_casefiddle ();
1388 keys_of_keyboard ();
1396 if (!noninteractive
)
1399 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1401 init_display (); /* Determine terminal type. init_sys_modes uses results */
1403 init_keyboard (); /* This too must precede init_sys_modes */
1405 init_vmsproc (); /* And this too. */
1407 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1408 #ifdef HAVE_X_WINDOWS
1410 #endif /* HAVE_X_WINDOWS */
1427 /* Handle -l loadup, args passed by Makefile. */
1428 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1429 Vtop_level
= Fcons (intern ("load"),
1430 Fcons (build_string (file
), Qnil
));
1432 /* Unless next switch is -nl, load "loadup.el" first thing. */
1434 Vtop_level
= Fcons (intern ("load"),
1435 Fcons (build_string ("loadup.el"), Qnil
));
1436 #endif /* CANNOT_DUMP */
1443 /* If the execution TZ happens to be the same as the dump TZ,
1444 change it to some other value and then change it back,
1445 to force the underlying implementation to reload the TZ info.
1446 This is needed on implementations that load TZ info from files,
1447 since the TZ file contents may differ between dump and execution. */
1448 char *tz
= getenv ("TZ");
1449 if (tz
&& !strcmp (tz
, dump_tz
))
1459 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1460 FreeBSD. It might work on some other systems too.
1461 Give it a try and tell me if it works on your system. */
1462 #if defined (__FreeBSD__) || defined (__linux)
1466 extern void _mcleanup ();
1468 extern void safe_bcopy ();
1469 extern void dump_opcode_frequencies ();
1472 /* This uses safe_bcopy because that function comes first in the
1473 Emacs executable. It might be better to use something that
1474 gives the start of the text segment, but start_of_text is not
1475 defined on all systems now. */
1476 monstartup (safe_bcopy
, &etext
);
1485 #ifdef LOCALTIME_CACHE
1486 /* Some versions of localtime have a bug. They cache the value of the time
1487 zone rather than looking it up every time. Since localtime() is
1488 called to bolt the undumping time into the undumped emacs, this
1489 results in localtime ignoring the TZ environment variable.
1490 This flushes the new TZ value into localtime. */
1492 #endif /* defined (LOCALTIME_CACHE) */
1494 /* Enter editor command loop. This never returns. */
1499 /* Sort the args so we can find the most important ones
1500 at the beginning of argv. */
1502 /* First, here's a table of all the standard options. */
1504 struct standard_args
1512 struct standard_args standard_args
[] =
1514 { "-version", "--version", 150, 0 },
1516 { "-nl", "--no-shared-memory", 140, 0 },
1519 { "-map", "--map-data", 130, 0 },
1521 { "-t", "--terminal", 120, 1 },
1522 { "-nw", "--no-windows", 110, 0 },
1523 { "-batch", "--batch", 100, 0 },
1524 { "-help", "--help", 90, 0 },
1525 { "-no-unibyte", "--no-unibyte", 83, 0 },
1526 { "-multibyte", "--multibyte", 82, 0 },
1527 { "-unibyte", "--unibyte", 81, 0 },
1528 { "-no-multibyte", "--no-multibyte", 80, 0 },
1530 { "-nl", "--no-loadup", 70, 0 },
1532 /* -d must come last before the options handled in startup.el. */
1533 { "-d", "--display", 60, 1 },
1534 { "-display", 0, 60, 1 },
1535 /* Now for the options handled in startup.el. */
1536 { "-q", "--no-init-file", 50, 0 },
1537 { "-no-init-file", 0, 50, 0 },
1538 { "-no-site-file", "--no-site-file", 40, 0 },
1539 { "-u", "--user", 30, 1 },
1540 { "-user", 0, 30, 1 },
1541 { "-debug-init", "--debug-init", 20, 0 },
1542 { "-i", "--icon-type", 15, 0 },
1543 { "-itype", 0, 15, 0 },
1544 { "-iconic", "--iconic", 15, 0 },
1545 { "-bg", "--background-color", 10, 1 },
1546 { "-background", 0, 10, 1 },
1547 { "-fg", "--foreground-color", 10, 1 },
1548 { "-foreground", 0, 10, 1 },
1549 { "-bd", "--border-color", 10, 1 },
1550 { "-bw", "--border-width", 10, 1 },
1551 { "-ib", "--internal-border", 10, 1 },
1552 { "-ms", "--mouse-color", 10, 1 },
1553 { "-cr", "--cursor-color", 10, 1 },
1554 { "-fn", "--font", 10, 1 },
1555 { "-font", 0, 10, 1 },
1556 { "-g", "--geometry", 10, 1 },
1557 { "-geometry", 0, 10, 1 },
1558 { "-T", "--title", 10, 1 },
1559 { "-title", 0, 10, 1 },
1560 { "-name", "--name", 10, 1 },
1561 { "-xrm", "--xrm", 10, 1 },
1562 { "-r", "--reverse-video", 5, 0 },
1564 { "-reverse", 0, 5, 0 },
1565 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1566 { "-vb", "--vertical-scroll-bars", 5, 0 },
1567 /* These have the same priority as ordinary file name args,
1568 so they are not reordered with respect to those. */
1569 { "-L", "--directory", 0, 1 },
1570 { "-directory", 0, 0, 1 },
1571 { "-l", "--load", 0, 1 },
1572 { "-load", 0, 0, 1 },
1573 { "-f", "--funcall", 0, 1 },
1574 { "-funcall", 0, 0, 1 },
1575 { "-eval", "--eval", 0, 1 },
1576 { "-execute", "--execute", 0, 1 },
1577 { "-find-file", "--find-file", 0, 1 },
1578 { "-visit", "--visit", 0, 1 },
1579 { "-file", "--file", 0, 1 },
1580 { "-insert", "--insert", 0, 1 },
1581 /* This should be processed after ordinary file name args and the like. */
1582 { "-kill", "--kill", -10, 0 },
1585 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1586 so that the highest priority ones come first.
1587 Do not change the order of elements of equal priority.
1588 If an option takes an argument, keep it and its argument together.
1590 If an option that takes no argument appears more
1591 than once, eliminate all but one copy of it. */
1594 sort_args (argc
, argv
)
1598 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1599 /* For each element of argv,
1600 the corresponding element of options is:
1601 0 for an option that takes no arguments,
1602 1 for an option that takes one argument, etc.
1603 -1 for an ordinary non-option argument. */
1604 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1605 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1607 int incoming_used
= 1;
1611 /* Categorize all the options,
1612 and figure out which argv elts are option arguments. */
1613 for (from
= 1; from
< argc
; from
++)
1617 if (argv
[from
][0] == '-')
1622 /* If we have found "--", don't consider
1623 any more arguments as options. */
1624 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1626 /* Leave the "--", and everything following it, at the end. */
1627 for (; from
< argc
; from
++)
1629 priority
[from
] = -100;
1635 /* Look for a match with a known old-fashioned option. */
1636 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1637 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1639 options
[from
] = standard_args
[i
].nargs
;
1640 priority
[from
] = standard_args
[i
].priority
;
1641 if (from
+ standard_args
[i
].nargs
>= argc
)
1642 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1643 from
+= standard_args
[i
].nargs
;
1647 /* Look for a match with a known long option.
1648 MATCH is -1 if no match so far, -2 if two or more matches so far,
1649 >= 0 (the table index of the match) if just one match so far. */
1650 if (argv
[from
][1] == '-')
1653 thislen
= strlen (argv
[from
]);
1654 equals
= index (argv
[from
], '=');
1656 thislen
= equals
- argv
[from
];
1659 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1660 if (standard_args
[i
].longname
1661 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1670 /* If we found exactly one match, use that. */
1673 options
[from
] = standard_args
[match
].nargs
;
1674 priority
[from
] = standard_args
[match
].priority
;
1675 /* If --OPTION=VALUE syntax is used,
1676 this option uses just one argv element. */
1679 if (from
+ options
[from
] >= argc
)
1680 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1681 from
+= options
[from
];
1688 /* Copy the arguments, in order of decreasing priority, to NEW. */
1690 while (incoming_used
< argc
)
1693 int best_priority
= -9999;
1695 /* Find the highest priority remaining option.
1696 If several have equal priority, take the first of them. */
1697 for (from
= 1; from
< argc
; from
++)
1699 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1701 best_priority
= priority
[from
];
1704 /* Skip option arguments--they are tied to the options. */
1705 if (options
[from
] > 0)
1706 from
+= options
[from
];
1712 /* Copy the highest priority remaining option, with its args, to NEW.
1713 Unless it is a duplicate of the previous one. */
1714 if (! (options
[best
] == 0
1715 && ! strcmp (new[to
- 1], argv
[best
])))
1717 new[to
++] = argv
[best
];
1718 for (i
= 0; i
< options
[best
]; i
++)
1719 new[to
++] = argv
[best
+ i
+ 1];
1722 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1724 /* Clear out this option in ARGV. */
1726 for (i
= 0; i
< options
[best
]; i
++)
1727 argv
[best
+ i
+ 1] = 0;
1730 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1734 bcopy (new, argv
, sizeof (char *) * argc
);
1741 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1742 "Exit the Emacs job and kill it.\n\
1743 If ARG is an integer, return ARG as the exit program code.\n\
1744 If ARG is a string, stuff it as keyboard input.\n\n\
1745 The value of `kill-emacs-hook', if not void,\n\
1746 is a list of functions (of no args),\n\
1747 all of which are called before Emacs is actually killed.")
1751 struct gcpro gcpro1
;
1758 if (!NILP (Vrun_hooks
) && !noninteractive
)
1759 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1763 /* Is it really necessary to do this deassign
1764 when we are going to exit anyway? */
1769 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1771 /* If we have an auto-save list file,
1772 kill it because we are exiting Emacs deliberately (not crashing).
1773 Do it after shut_down_emacs, which does an auto-save. */
1774 if (STRINGP (Vauto_save_list_file_name
))
1775 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1777 exit (INTEGERP (arg
) ? XINT (arg
)
1788 /* Perform an orderly shutdown of Emacs. Autosave any modified
1789 buffers, kill any child processes, clean up the terminal modes (if
1790 we're in the foreground), and other stuff like that. Don't perform
1791 any redisplay; this may be called when Emacs is shutting down in
1792 the background, or after its X connection has died.
1794 If SIG is a signal number, print a message for it.
1796 This is called by fatal signal handlers, X protocol error handlers,
1800 shut_down_emacs (sig
, no_x
, stuff
)
1804 /* Prevent running of hooks from now on. */
1807 /* If we are controlling the terminal, reset terminal modes */
1808 #ifdef EMACS_HAVE_TTY_PGRP
1810 int pgrp
= EMACS_GETPGRP (0);
1813 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1818 if (sig
&& sig
!= SIGTERM
)
1819 fprintf (stderr
, "Fatal error (%d).", sig
);
1827 stuff_buffered_input (stuff
);
1829 kill_buffer_processes (Qnil
);
1830 Fdo_auto_save (Qt
, Qnil
);
1832 #ifdef CLASH_DETECTION
1833 unlock_all_files ();
1837 kill_vms_processes ();
1840 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1841 #ifdef HAVE_X_WINDOWS
1842 /* It's not safe to call intern here. Maybe we are crashing. */
1843 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1844 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1845 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1847 Fx_close_current_connection ();
1848 #endif /* HAVE_X_WINDOWS */
1852 /* There is a tendency for a SIGIO signal to arrive within exit,
1853 and cause a SIGHUP because the input descriptor is already closed. */
1855 signal (SIGIO
, SIG_IGN
);
1862 check_glyph_memory ();
1863 check_message_stack ();
1876 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1877 "Dump current state of Emacs into data file FILENAME.\n\
1878 This function exists on systems that use HAVE_SHM.")
1880 Lisp_Object filename
;
1882 extern char my_edata
[];
1885 CHECK_STRING (filename
, 0);
1886 filename
= Fexpand_file_name (filename
, Qnil
);
1889 Vpurify_flag
= Qnil
;
1892 /* Tell malloc where start of impure now is */
1893 /* Also arrange for warnings when nearly out of space. */
1894 #ifndef SYSTEM_MALLOC
1895 memory_warnings (my_edata
, malloc_warning
);
1897 map_out_data (XSTRING (filename
)->data
);
1904 #else /* not HAVE_SHM */
1906 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1907 "Dump current state of Emacs into executable file FILENAME.\n\
1908 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1909 This is used in the file `loadup.el' when building Emacs.\n\
1911 You must run Emacs in batch mode in order to dump it.")
1913 Lisp_Object filename
, symfile
;
1915 extern char my_edata
[];
1918 int count
= specpdl_ptr
- specpdl
;
1920 if (! noninteractive
)
1921 error ("Dumping Emacs works only in batch mode");
1923 /* Bind `command-line-processed' to nil before dumping,
1924 so that the dumped Emacs will process its command line
1925 and set up to work with X windows if appropriate. */
1926 symbol
= intern ("command-line-process");
1927 specbind (symbol
, Qnil
);
1929 CHECK_STRING (filename
, 0);
1930 filename
= Fexpand_file_name (filename
, Qnil
);
1931 if (!NILP (symfile
))
1933 CHECK_STRING (symfile
, 0);
1934 if (XSTRING (symfile
)->size
)
1935 symfile
= Fexpand_file_name (symfile
, Qnil
);
1939 Vpurify_flag
= Qnil
;
1942 set_time_zone_rule (dump_tz
);
1943 #ifndef LOCALTIME_CACHE
1944 /* Force a tz reload, since set_time_zone_rule doesn't. */
1951 mapout_data (XSTRING (filename
)->data
);
1953 /* Tell malloc where start of impure now is */
1954 /* Also arrange for warnings when nearly out of space. */
1955 #ifndef SYSTEM_MALLOC
1957 /* On Windows, this was done before dumping, and that once suffices.
1958 Meanwhile, my_edata is not valid on Windows. */
1959 memory_warnings (my_edata
, malloc_warning
);
1960 #endif /* not WINDOWSNT */
1962 #ifdef DOUG_LEA_MALLOC
1963 malloc_state_ptr
= malloc_get_state ();
1965 unexec (XSTRING (filename
)->data
,
1966 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1967 #ifdef DOUG_LEA_MALLOC
1968 free (malloc_state_ptr
);
1970 #endif /* not VMS */
1974 return unbind_to (count
, Qnil
);
1977 #endif /* not HAVE_SHM */
1979 #endif /* not CANNOT_DUMP */
1982 /* Recover from setlocale (LC_ALL, ""). */
1986 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
1987 so that numbers are read and printed properly for Emacs Lisp. */
1988 setlocale (LC_NUMERIC
, "C");
1991 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
1994 synchronize_locale (category
, plocale
, desired_locale
)
1996 Lisp_Object
*plocale
;
1997 Lisp_Object desired_locale
;
1999 if (! EQ (*plocale
, desired_locale
))
2001 *plocale
= desired_locale
;
2002 setlocale (category
, (STRINGP (desired_locale
)
2003 ? (char *)(XSTRING (desired_locale
)->data
)
2008 /* Set system time locale to match Vsystem_time_locale, if possible. */
2010 synchronize_system_time_locale ()
2012 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2013 Vsystem_time_locale
);
2016 /* Set system messages locale to match Vsystem_messages_locale, if
2019 synchronize_system_messages_locale ()
2022 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2023 Vsystem_messages_locale
);
2026 #endif /* HAVE_SETLOCALE */
2033 decode_env_path (evarname
, defalt
)
2034 char *evarname
, *defalt
;
2036 register char *path
, *p
;
2037 Lisp_Object lpath
, element
, tem
;
2039 /* It's okay to use getenv here, because this function is only used
2040 to initialize variables when Emacs starts up, and isn't called
2043 path
= (char *) getenv (evarname
);
2049 /* Ensure values from the environment use the proper directory separator. */
2052 p
= alloca (strlen (path
) + 1);
2056 if ('/' == DIRECTORY_SEP
)
2057 dostounix_filename (path
);
2059 unixtodos_filename (path
);
2065 p
= index (path
, SEPCHAR
);
2066 if (!p
) p
= path
+ strlen (path
);
2067 element
= (p
- path
? make_string (path
, p
- path
)
2068 : build_string ("."));
2070 /* Add /: to the front of the name
2071 if it would otherwise be treated as magic. */
2072 tem
= Ffind_file_name_handler (element
, Qt
);
2074 element
= concat2 (build_string ("/:"), element
);
2076 lpath
= Fcons (element
, lpath
);
2082 return Fnreverse (lpath
);
2088 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2089 staticpro (&Qfile_name_handler_alist
);
2093 defsubr (&Sdump_emacs_data
);
2095 defsubr (&Sdump_emacs
);
2099 defsubr (&Skill_emacs
);
2101 defsubr (&Sinvocation_name
);
2102 defsubr (&Sinvocation_directory
);
2104 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2105 "Args passed by shell to Emacs, as a list of strings.");
2107 DEFVAR_LISP ("system-type", &Vsystem_type
,
2108 "Value is symbol indicating type of operating system you are using.");
2109 Vsystem_type
= intern (SYSTEM_TYPE
);
2111 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2112 "Value is string indicating configuration Emacs was built for.");
2113 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2115 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2116 "String containing the configuration options Emacs was built with.");
2117 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2119 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2120 "Non-nil means Emacs is running without interactive terminal.");
2122 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2123 "Hook to be run whenever kill-emacs is called.\n\
2124 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
2125 in other similar situations), functions placed on this hook should not\n\
2126 expect to be able to interact with the user. To ask for confirmation,\n\
2127 see `kill-emacs-query-functions' instead.");
2128 Vkill_emacs_hook
= Qnil
;
2131 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2132 "Hook to be run whenever emacs receives a USR1 signal");
2133 Vsignal_USR1_hook
= Qnil
;
2135 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2136 "Hook to be run whenever emacs receives a USR2 signal");
2137 Vsignal_USR2_hook
= Qnil
;
2142 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2143 "Priority for Emacs to run at.\n\
2144 This value is effective only if set before Emacs is dumped,\n\
2145 and only if the Emacs executable is installed with setuid to permit\n\
2146 it to change priority. (Emacs sets its uid back to the real uid.)\n\
2147 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
2148 before you compile Emacs, to enable the code for this feature.");
2151 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2152 "The directory separator in search paths, as a string.");
2155 Vpath_separator
= make_string (&c
, 1);
2158 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2159 "The program name that was used to run Emacs.\n\
2160 Any directory names are omitted.");
2162 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2163 "The directory in which the Emacs executable was found, to run it.\n\
2164 The value is nil if that directory's name is not known.");
2166 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2167 "A directory within which to look for the `lib-src' and `etc' directories.\n\
2168 This is non-nil when we can't find those directories in their standard\n\
2169 installed locations, but we can find them\n\
2170 near where the Emacs executable was found.");
2171 Vinstallation_directory
= Qnil
;
2173 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2174 "System locale for messages.");
2175 Vsystem_messages_locale
= Qnil
;
2177 DEFVAR_LISP ("previous-system-messages-locale",
2178 &Vprevious_system_messages_locale
,
2179 "Most recently used system locale for messages.");
2180 Vprevious_system_messages_locale
= Qnil
;
2182 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2183 "System locale for time.");
2184 Vsystem_time_locale
= Qnil
;
2186 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2187 "Most recently used system locale for time.");
2188 Vprevious_system_time_locale
= Qnil
;