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>
68 #if !defined (USG) || defined (BSD_PGRPS)
70 #define setpgrp setpgid
74 extern void malloc_warning
P_ ((char *));
75 extern void set_time_zone_rule
P_ ((char *));
76 extern char *index
P_ ((const char *, int));
78 /* Make these values available in GDB, which doesn't see macros. */
80 EMACS_INT gdb_valbits
= VALBITS
;
81 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
82 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
84 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
86 EMACS_INT gdb_data_seg_bits
= 0;
88 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
90 /* Command line args from shell, as list of strings */
91 Lisp_Object Vcommand_line_args
;
93 /* The name under which Emacs was invoked, with any leading directory
95 Lisp_Object Vinvocation_name
;
97 /* The directory name from which Emacs was invoked. */
98 Lisp_Object Vinvocation_directory
;
100 /* The directory name in which to find subdirs such as lisp and etc.
101 nil means get them only from PATH_LOADSEARCH. */
102 Lisp_Object Vinstallation_directory
;
104 /* Hook run by `kill-emacs' before it does really anything. */
105 Lisp_Object Vkill_emacs_hook
;
108 /* Hooks for signal USR1 and USR2 handing */
109 Lisp_Object Vsignal_USR1_hook
;
111 Lisp_Object Vsignal_USR2_hook
;
115 /* Search path separator. */
116 Lisp_Object Vpath_separator
;
118 /* Set nonzero after Emacs has started up the first time.
119 Prevents reinitialization of the Lisp world and keymaps
120 on subsequent starts. */
123 #ifdef DOUG_LEA_MALLOC
124 /* Preserves a pointer to the memory allocated that copies that
125 static data inside glibc's malloc. */
126 void *malloc_state_ptr
;
127 /* From glibc, a routine that returns a copy of the malloc internal state. */
128 extern void *malloc_get_state ();
129 /* From glibc, a routine that overwrites the malloc internal state. */
130 extern void malloc_set_state ();
131 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
132 dumping. Used to work around a bug in glibc's malloc. */
133 int malloc_using_checking
;
136 /* Variable whose value is symbol giving operating system type. */
137 Lisp_Object Vsystem_type
;
139 /* Variable whose value is string giving configuration built for. */
140 Lisp_Object Vsystem_configuration
;
142 /* Variable whose value is string giving configuration options,
143 for use when reporting bugs. */
144 Lisp_Object Vsystem_configuration_options
;
146 Lisp_Object Qfile_name_handler_alist
;
148 /* Current and previous system locales for messages and time. */
149 Lisp_Object Vsystem_messages_locale
;
150 Lisp_Object Vprevious_system_messages_locale
;
151 Lisp_Object Vsystem_time_locale
;
152 Lisp_Object Vprevious_system_time_locale
;
154 /* If non-zero, emacs should not attempt to use an window-specific code,
155 but instead should use the virtual terminal under which it was started */
156 int inhibit_window_system
;
158 /* If nonzero, set Emacs to run at this priority. This is also used
159 in child_setup and sys_suspend to make sure subshells run at normal
160 priority; Those functions have their own extern declaration. */
163 /* If non-zero a filter or a sentinel is running. Tested to save the match
164 data on the first attempt to change it inside asynchronous code. */
165 int running_asynch_code
;
169 extern int inherited_pgroup
;
172 #ifdef HAVE_X_WINDOWS
173 /* If non-zero, -d was specified, meaning we're using some window system. */
177 /* An address near the bottom of the stack.
178 Tells GC how to save a copy of the stack. */
181 #ifdef HAVE_WINDOW_SYSTEM
182 extern Lisp_Object Vwindow_system
;
183 #endif /* HAVE_WINDOW_SYSTEM */
185 extern Lisp_Object Vauto_save_list_file_name
;
187 #ifdef USG_SHARED_LIBRARIES
188 /* If nonzero, this is the place to put the end of the writable segment
191 unsigned int bss_end
= 0;
194 /* Nonzero means running Emacs without interactive terminal. */
198 /* Value of Lisp variable `noninteractive'.
199 Normally same as C variable `noninteractive'
200 but nothing terrible happens if user sets this one. */
204 /* Save argv and argc. */
208 static void sort_args ();
209 void syms_of_emacs ();
212 Usage: %s [OPTION-OR-FILENAME]...\n\
214 Run Emacs, the extensible, customizable, self-documenting real-time\n\
215 display editor. The recommended way to start Emacs for normal editing\n\
216 is with no options at all.\n\
218 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
219 read the main documentation for these command-line arguments.\n\
221 Initialization options:\n\
223 --batch do not do interactive display; implies -q\n\
224 --debug-init enable Emacs Lisp debugger during init file\n\
225 --help display this help message and exit\n\
226 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
227 --no-init-file, -q load neither ~/.emacs nor default.el\n\
228 --no-shared-memory, -nl do not use shared memory\n\
229 --no-site-file do not load site-start.el\n\
230 --no-windows, -nw don't communicate with X, ignoring $DISPLAY\n\
231 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
232 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
233 --user, -u USER load ~USER/.emacs instead of your own\n\
234 --version display version information and exit\n\
238 FILE visit FILE using find-file\n\
239 +LINENUM FILE visit FILE using find-file, then go to line LINENUM\n\
240 --directory, -L DIR add DIR to variable load-path\n\
241 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
242 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
243 --find-file FILE visit FILE\n\
244 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
245 --insert FILE insert contents of FILE into current buffer\n\
246 --kill exit without asking for confirmation\n\
247 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
248 --visit FILE visit FILE\n\
254 --background-color, -bg COLOR window background color\n\
255 --border-color, -bd COLOR main border color\n\
256 --border-width, -bw WIDTH width of main border\n\
257 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
258 --display, -d DISPLAY use X server DISPLAY\n\
259 --font, -fn FONT default font; must be fixed-widthp\n\
260 --foreground-color, -fg COLOR window foreground color\n\
261 --geometry, -g GEOMETRY window geometry\n\
262 --iconic start Emacs in iconified state\n\
263 --icon-type, -i use picture of gnu for Emacs icon\n\
264 --internal-border, -ib WIDTH width between text and main border\n\
265 --line-spacing, -lsp PIXELS additional space to put between lines\n\
266 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
267 --name NAME title of main Emacs window\n\
268 --reverse-video, -r, -rv switch foreground and background\n\
269 --title, -T, -wn, TITLE title for Emacs windows\n\
270 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
271 --xrm XRESOURCES set additional X resources\n\
273 You can generally also specify long option names with a single -; for\n\
274 example, -batch as well as --batch. You can use any unambiguous\n\
275 abbreviation for a --option.\n\
277 Various environment variables and window system resources also affect\n\
278 Emacs' operation. See the main documentation.\n\
280 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
281 section of the Emacs manual or the file BUGS.\n"
284 /* Signal code for the fatal signal that was received */
285 int fatal_error_code
;
287 /* Nonzero if handling a fatal error already */
288 int fatal_error_in_progress
;
292 handle_USR1_signal (sig
)
295 struct input_event buf
;
297 buf
.kind
= user_signal
;
299 buf
.frame_or_window
= selected_frame
;
303 kbd_buffer_store_event (&buf
);
309 handle_USR2_signal (sig
)
312 struct input_event buf
;
314 buf
.kind
= user_signal
;
316 buf
.frame_or_window
= selected_frame
;
320 kbd_buffer_store_event (&buf
);
324 /* Handle bus errors, invalid instruction, etc. */
326 fatal_error_signal (sig
)
329 fatal_error_code
= sig
;
330 signal (sig
, SIG_DFL
);
332 TOTALLY_UNBLOCK_INPUT
;
334 /* If fatal error occurs in code below, avoid infinite recursion. */
335 if (! fatal_error_in_progress
)
337 fatal_error_in_progress
= 1;
339 shut_down_emacs (sig
, 0, Qnil
);
343 LIB$
STOP (SS$_ABORT
);
345 /* Signal the same code; this time it will really be fatal.
346 Remember that since we're in a signal handler, the signal we're
347 going to send is probably blocked, so we have to unblock it if we
348 want to really receive it. */
350 sigunblock (sigmask (fatal_error_code
));
352 kill (getpid (), fatal_error_code
);
358 /* Handler for SIGDANGER. */
360 memory_warning_signal (sig
)
363 signal (sig
, memory_warning_signal
);
365 malloc_warning ("Operating system warns that virtual memory is running low.\n");
367 /* It might be unsafe to call do_auto_save now. */
368 force_auto_save_soon ();
372 /* We define abort, rather than using it from the library,
373 so that GDB can return from a breakpoint here.
374 MSDOS has its own definition on msdos.c */
376 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
378 #ifndef ABORT_RETURN_TYPE
379 #define ABORT_RETURN_TYPE void
385 kill (getpid (), SIGABRT
);
386 /* This shouldn't be executed, but it prevents a warning. */
392 /* Code for dealing with Lisp access to the Unix command line */
395 init_cmdargs (argc
, argv
, skip_args
)
401 Lisp_Object name
, dir
, tem
;
402 int count
= specpdl_ptr
- specpdl
;
403 Lisp_Object raw_name
;
408 raw_name
= build_string (argv
[0]);
410 /* Add /: to the front of the name
411 if it would otherwise be treated as magic. */
412 tem
= Ffind_file_name_handler (raw_name
, Qt
);
414 raw_name
= concat2 (build_string ("/:"), raw_name
);
416 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
417 Vinvocation_directory
= Ffile_name_directory (raw_name
);
419 /* If we got no directory in argv[0], search PATH to find where
420 Emacs actually came from. */
421 if (NILP (Vinvocation_directory
))
424 int yes
= openp (Vexec_path
, Vinvocation_name
,
425 EXEC_SUFFIXES
, &found
, 1);
428 /* Add /: to the front of the name
429 if it would otherwise be treated as magic. */
430 tem
= Ffind_file_name_handler (found
, Qt
);
432 found
= concat2 (build_string ("/:"), found
);
433 Vinvocation_directory
= Ffile_name_directory (found
);
437 if (!NILP (Vinvocation_directory
)
438 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
439 /* Emacs was started with relative path, like ./emacs.
441 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
443 Vinstallation_directory
= Qnil
;
445 if (!NILP (Vinvocation_directory
))
447 dir
= Vinvocation_directory
;
448 name
= Fexpand_file_name (Vinvocation_name
, dir
);
451 Lisp_Object tem
, lib_src_exists
;
452 Lisp_Object etc_exists
, info_exists
;
454 /* See if dir contains subdirs for use by Emacs.
455 Check for the ones that would exist in a build directory,
456 not including lisp and info. */
457 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
458 lib_src_exists
= Ffile_exists_p (tem
);
461 /* MSDOS installations frequently remove lib-src, but we still
462 must set installation-directory, or else info won't find
463 its files (it uses the value of installation-directory). */
464 tem
= Fexpand_file_name (build_string ("info"), dir
);
465 info_exists
= Ffile_exists_p (tem
);
470 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
472 tem
= Fexpand_file_name (build_string ("etc"), dir
);
473 etc_exists
= Ffile_exists_p (tem
);
474 if (!NILP (etc_exists
))
476 Vinstallation_directory
477 = Ffile_name_as_directory (dir
);
482 /* See if dir's parent contains those subdirs. */
483 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
484 lib_src_exists
= Ffile_exists_p (tem
);
488 /* See the MSDOS commentary above. */
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 tem
= Fexpand_file_name (build_string (".."), dir
);
502 Vinstallation_directory
503 = Ffile_name_as_directory (tem
);
508 /* If the Emacs executable is actually a link,
509 next try the dir that the link points into. */
510 tem
= Ffile_symlink_p (name
);
513 name
= Fexpand_file_name (tem
, dir
);
514 dir
= Ffile_name_directory (name
);
521 Vcommand_line_args
= Qnil
;
523 for (i
= argc
- 1; i
>= 0; i
--)
525 if (i
== 0 || i
> skip_args
)
527 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
530 unbind_to (count
, Qnil
);
533 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
534 "Return the program name that was used to run Emacs.\n\
535 Any directory names are omitted.")
538 return Fcopy_sequence (Vinvocation_name
);
541 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
543 "Return the directory name in which the Emacs executable was located")
546 return Fcopy_sequence (Vinvocation_directory
);
551 #ifdef LINK_CRTL_SHARE
552 #ifdef SHARABLE_LIB_BUG
553 extern noshare
char **environ
;
554 #endif /* SHARABLE_LIB_BUG */
555 #endif /* LINK_CRTL_SHARE */
559 /* A valid but unlikely value for the TZ environment value.
560 It is OK (though a bit slower) if the user actually chooses this value. */
561 static char dump_tz
[] = "UtC0";
564 #ifndef ORDINARY_LINK
565 /* We don't include crtbegin.o and crtend.o in the link,
566 so these functions and variables might be missed.
567 Provide dummy definitions to avoid error.
568 (We don't have any real constructors or destructors.) */
570 #ifndef GCC_CTORS_IN_LIBC
571 void __do_global_ctors ()
573 void __do_global_ctors_aux ()
575 void __do_global_dtors ()
577 /* Linux has a bug in its library; avoid an error. */
579 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
581 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
582 #endif /* GCC_CTORS_IN_LIBC */
585 #endif /* __GNUC__ */
586 #endif /* ORDINARY_LINK */
588 /* Test whether the next argument in ARGV matches SSTR or a prefix of
589 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
590 (the argument is supposed to have a value) store in *VALPTR either
591 the next argument or the portion of this one after the equal sign.
592 ARGV is read starting at position *SKIPPTR; this index is advanced
593 by the number of arguments used.
595 Too bad we can't just use getopt for all of this, but we don't have
596 enough information to do it right. */
599 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
612 /* Don't access argv[argc]; give up in advance. */
613 if (argc
<= *skipptr
+ 1)
616 arg
= argv
[*skipptr
+1];
619 if (strcmp (arg
, sstr
) == 0)
623 *valptr
= argv
[*skipptr
+2];
630 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
631 ? p
- arg
: strlen (arg
));
632 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
634 else if (valptr
== NULL
)
645 else if (argv
[*skipptr
+2] != NULL
)
647 *valptr
= argv
[*skipptr
+2];
657 #ifdef DOUG_LEA_MALLOC
659 /* malloc can be invoked even before main (e.g. by the dynamic
660 linker), so the dumped malloc state must be restored as early as
661 possible using this special hook. */
664 malloc_initialize_hook ()
666 extern char **environ
;
670 if (!malloc_using_checking
)
671 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
672 ignored if the heap to be restored was constructed without
673 malloc checking. Can't use unsetenv, since that calls malloc. */
677 for (p
= environ
; *p
; p
++)
678 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
687 malloc_set_state (malloc_state_ptr
);
688 free (malloc_state_ptr
);
691 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
694 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
696 #endif /* DOUG_LEA_MALLOC */
700 main (argc
, argv
, envp
)
708 char stack_bottom_variable
;
709 int do_initial_setlocale
;
713 #ifdef HAVE_SETRLIMIT
719 extern Lisp_Object
*stack_base
;
723 #ifdef LINUX_SBRK_BUG
727 #ifdef RUN_TIME_REMAP
729 run_time_remap (argv
[0]);
732 sort_args (argc
, argv
);
734 while (argv
[argc
]) argc
++;
736 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
737 /* We don't know the version number unless this is a dumped Emacs.
738 So ignore --version otherwise. */
742 tem
= Fsymbol_value (intern ("emacs-version"));
745 fprintf (stderr
, "Invalid value of `emacs-version'\n");
750 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
751 printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
752 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
753 printf ("You may redistribute copies of Emacs\n");
754 printf ("under the terms of the GNU General Public License.\n");
755 printf ("For more information about these matters, ");
756 printf ("see the file named COPYING.\n");
761 /* Map in shared memory, if we are using that. */
763 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
766 /* The shared memory was just restored, which clobbered this. */
772 /* The shared memory was just restored, which clobbered this. */
779 extern int malloc_cookie
;
780 /* This helps out unexnext.c. */
782 if (malloc_jumpstart (malloc_cookie
) != 0)
783 printf ("malloc jumpstart failed!\n");
788 /* If -map specified, map the data file in */
791 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
795 #ifdef LINK_CRTL_SHARE
796 #ifdef SHARABLE_LIB_BUG
797 /* Bletcherous shared libraries! */
799 stdin
= fdopen (0, "r");
801 stdout
= fdopen (1, "w");
803 stderr
= fdopen (2, "w");
806 #endif /* SHARABLE_LIB_BUG */
807 #endif /* LINK_CRTL_SHARE */
810 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
811 /* Extend the stack space available.
812 Don't do that if dumping, since some systems (e.g. DJGPP)
813 might define a smaller stack limit at that time. */
816 && (!noninteractive
|| initialized
)
818 && !getrlimit (RLIMIT_STACK
, &rlim
))
821 extern int re_max_failures
;
822 /* Approximate the amount regex.c needs per unit of re_max_failures. */
823 int ratio
= 20 * sizeof (char *);
824 /* Then add 33% to cover the size of the smaller stacks that regex.c
825 successively allocates and discards, on its way to the maximum. */
827 /* Add in some extra to cover
828 what we're likely to use for other reasons. */
829 newlim
= re_max_failures
* ratio
+ 200000;
831 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
832 stack allocation routine for new process that the allocation
833 fails if stack limit is not on page boundary. So, round up the
834 new limit to page boundary. */
835 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
837 if (newlim
> rlim
.rlim_max
)
839 newlim
= rlim
.rlim_max
;
840 /* Don't let regex.c overflow the stack we have. */
841 re_max_failures
= (newlim
- 200000) / ratio
;
843 if (rlim
.rlim_cur
< newlim
)
844 rlim
.rlim_cur
= newlim
;
846 setrlimit (RLIMIT_STACK
, &rlim
);
848 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
850 /* Record (approximately) where the stack begins. */
851 stack_bottom
= &stack_bottom_variable
;
853 #ifdef USG_SHARED_LIBRARIES
855 brk ((void *)bss_end
);
860 #ifndef SYSTEM_MALLOC
861 /* Arrange to get warning messages as memory fills up. */
862 memory_warnings (0, malloc_warning
);
864 /* Call malloc at least once, to run the initial __malloc_hook.
865 Also call realloc and free for consistency. */
866 free (realloc (malloc (4), 4));
868 /* Arrange to disable interrupt input inside malloc etc. */
869 uninterrupt_malloc ();
870 #endif /* not SYSTEM_MALLOC */
873 /* We do all file input/output as binary files. When we need to translate
874 newlines, we do that manually. */
878 if (!isatty (fileno (stdin
)))
879 setmode (fileno (stdin
), O_BINARY
);
880 if (!isatty (fileno (stdout
)))
883 setmode (fileno (stdout
), O_BINARY
);
885 #else /* not __DJGPP__ >= 2 */
886 (stdin
)->_flag
&= ~_IOTEXT
;
887 (stdout
)->_flag
&= ~_IOTEXT
;
888 (stderr
)->_flag
&= ~_IOTEXT
;
889 #endif /* not __DJGPP__ >= 2 */
892 #ifdef SET_EMACS_PRIORITY
894 nice (emacs_priority
);
896 #endif /* SET_EMACS_PRIORITY */
898 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
899 The build procedure uses this while dumping, to ensure that the
900 dumped Emacs does not have its system locale tables initialized,
901 as that might cause screwups when the dumped Emacs starts up. */
903 char *lc_all
= getenv ("LC_ALL");
904 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
907 /* Set locale now, so that initial error messages are localized properly.
908 fixup_locale must wait until later, since it builds strings. */
909 if (do_initial_setlocale
)
910 setlocale (LC_ALL
, "");
912 #ifdef EXTRA_INITIALIZE
916 inhibit_window_system
= 0;
918 /* Handle the -t switch, which specifies filename to use as terminal */
922 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
927 result
= emacs_open (term
, O_RDWR
, 0);
930 char *errstring
= strerror (errno
);
931 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
937 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
940 fprintf (stderr
, "Using %s\n", term
);
941 #ifdef HAVE_WINDOW_SYSTEM
942 inhibit_window_system
= 1; /* -t => -nw */
949 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
950 inhibit_window_system
= 1;
952 /* Handle the -batch switch, which means don't do interactive display. */
954 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
957 /* Handle the --help option, which gives a usage message.. */
958 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
960 printf (USAGE1
, argv
[0]);
965 if (! noninteractive
)
970 inherited_pgroup
= EMACS_GETPGRP (0);
971 setpgrp (0, getpid ());
974 #if defined (USG5) && defined (INTERRUPT_INPUT)
982 /* Don't catch SIGHUP if dumping. */
989 sigblock (sigmask (SIGHUP
));
990 /* In --batch mode, don't catch SIGHUP if already ignored.
991 That makes nohup work. */
993 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
994 signal (SIGHUP
, fatal_error_signal
);
995 sigunblock (sigmask (SIGHUP
));
1000 ! noninteractive
|| initialized
1006 /* Don't catch these signals in batch mode if dumping.
1007 On some machines, this sets static data that would make
1008 signal fail to work right when the dumped Emacs is run. */
1009 signal (SIGQUIT
, fatal_error_signal
);
1010 signal (SIGILL
, fatal_error_signal
);
1011 signal (SIGTRAP
, fatal_error_signal
);
1013 signal (SIGUSR1
, handle_USR1_signal
);
1015 signal (SIGUSR2
, handle_USR2_signal
);
1019 signal (SIGABRT
, fatal_error_signal
);
1022 signal (SIGHWE
, fatal_error_signal
);
1025 signal (SIGPRE
, fatal_error_signal
);
1028 signal (SIGORE
, fatal_error_signal
);
1031 signal (SIGUME
, fatal_error_signal
);
1034 signal (SIGDLK
, fatal_error_signal
);
1037 signal (SIGCPULIM
, fatal_error_signal
);
1040 /* This is missing on some systems - OS/2, for example. */
1041 signal (SIGIOT
, fatal_error_signal
);
1044 signal (SIGEMT
, fatal_error_signal
);
1046 signal (SIGFPE
, fatal_error_signal
);
1048 signal (SIGBUS
, fatal_error_signal
);
1050 signal (SIGSEGV
, fatal_error_signal
);
1052 signal (SIGSYS
, fatal_error_signal
);
1054 signal (SIGTERM
, fatal_error_signal
);
1056 signal (SIGXCPU
, fatal_error_signal
);
1059 signal (SIGXFSZ
, fatal_error_signal
);
1060 #endif /* SIGXFSZ */
1063 /* This just means available memory is getting low. */
1064 signal (SIGDANGER
, memory_warning_signal
);
1068 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1069 signal (SIGXCPU
, fatal_error_signal
);
1071 signal (SIGIOINT
, fatal_error_signal
);
1073 signal (SIGGRANT
, fatal_error_signal
);
1074 signal (SIGRETRACT
, fatal_error_signal
);
1075 signal (SIGSOUND
, fatal_error_signal
);
1076 signal (SIGMSG
, fatal_error_signal
);
1080 noninteractive1
= noninteractive
;
1082 /* Perform basic initializations (not merely interning symbols) */
1089 init_charset_once ();
1090 init_coding_once ();
1091 init_syntax_once (); /* Create standard syntax table. */
1092 init_category_once (); /* Create standard category table. */
1093 /* Must be done before init_buffer */
1094 init_casetab_once ();
1095 init_buffer_once (); /* Create buffer table and some buffers */
1096 init_minibuf_once (); /* Create list of minibuffers */
1097 /* Must precede init_window_once */
1099 /* Call syms_of_xfaces before init_window_once because that
1100 function creates Vterminal_frame. Termcap frames now use
1101 faces, and the face implementation uses some symbols as
1104 /* Call syms_of_keyboard before init_window_once because
1105 keyboard sets up symbols that include some face names that
1106 the X support will want to use. This can happen when
1107 CANNOT_DUMP is defined. */
1108 syms_of_keyboard ();
1110 init_window_once (); /* Init the window system */
1111 init_fileio_once (); /* Must precede any path manipulation. */
1116 if (do_initial_setlocale
)
1119 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1120 Vsystem_time_locale
= Vprevious_system_time_locale
;
1126 #ifdef CLASH_DETECTION
1130 running_asynch_code
= 0;
1132 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1133 but not while dumping. */
1136 ! noninteractive
|| initialized
1142 int inhibit_unibyte
= 0;
1144 /* --multibyte overrides EMACS_UNIBYTE. */
1145 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1146 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1147 inhibit_unibyte
= 1;
1149 /* --unibyte requests that we set up to do everything with single-byte
1150 buffers and strings. We need to handle this before calling
1151 init_lread, init_editfns and other places that generate Lisp strings
1152 from text in the environment. */
1153 /* Actually this shouldn't be needed as of 20.4 in a generally
1154 unibyte environment. As handa says, environment values
1155 aren't now decoded; also existing buffers are now made
1156 unibyte during startup if .emacs sets unibyte. Tested with
1157 8-bit data in environment variables and /etc/passwd, setting
1158 unibyte and Latin-1 in .emacs. -- Dave Love */
1159 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1160 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1161 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1163 Lisp_Object old_log_max
;
1164 Lisp_Object symbol
, tail
;
1166 symbol
= intern ("default-enable-multibyte-characters");
1167 Fset (symbol
, Qnil
);
1171 /* Erase pre-dump messages in *Messages* now so no abort. */
1172 old_log_max
= Vmessage_log_max
;
1173 XSETFASTINT (Vmessage_log_max
, 0);
1174 message_dolog ("", 0, 1, 0);
1175 Vmessage_log_max
= old_log_max
;
1178 for (tail
= Vbuffer_alist
; CONSP (tail
);
1183 buffer
= Fcdr (XCAR (tail
));
1184 /* Verify that all buffers are empty now, as they
1186 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1188 /* It is safe to do this crudely in an empty buffer. */
1189 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1195 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1198 #ifdef HAVE_X_WINDOWS
1199 /* Stupid kludge to catch command-line display spec. We can't
1200 handle this argument entirely in window system dependent code
1201 because we don't even know which window system dependent code
1202 to run until we've recognized this argument. */
1204 char *displayname
= 0;
1205 int count_before
= skip_args
;
1207 /* Skip any number of -d options, but only use the last one. */
1210 int count_before_this
= skip_args
;
1212 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1214 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1219 count_before
= count_before_this
;
1222 /* If we have the form --display=NAME,
1223 convert it into -d name.
1224 This requires inserting a new element into argv. */
1225 if (displayname
!= 0 && skip_args
- count_before
== 1)
1227 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1230 for (j
= 0; j
< count_before
+ 1; j
++)
1232 new[count_before
+ 1] = "-d";
1233 new[count_before
+ 2] = displayname
;
1234 for (j
= count_before
+ 2; j
<argc
; j
++)
1235 new[j
+ 1] = argv
[j
];
1239 /* Change --display to -d, when its arg is separate. */
1240 else if (displayname
!= 0 && skip_args
> count_before
1241 && argv
[count_before
+ 1][1] == '-')
1242 argv
[count_before
+ 1] = "-d";
1244 /* Don't actually discard this arg. */
1245 skip_args
= count_before
;
1249 /* argmatch must not be used after here,
1250 except when bulding temacs
1251 because the -d argument has not been skipped in skip_args. */
1254 /* Call early 'cause init_environment needs it. */
1256 /* Set defaults for several environment variables. */
1258 init_environment (argc
, argv
, skip_args
);
1264 /* Initialize environment from registry settings. */
1265 init_environment (argv
);
1266 init_ntproc (); /* must precede init_editfns */
1269 /* egetenv is a pretty low-level facility, which may get called in
1270 many circumstances; it seems flimsy to put off initializing it
1271 until calling init_callproc. */
1272 set_process_environment ();
1273 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1274 if this is not done. Do it after set_process_environment so that we
1275 don't pollute Vprocess_environment. */
1276 /* Setting LANG here will defeat the startup locale processing... */
1281 init_buffer (); /* Init default directory of main buffer */
1283 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1284 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1288 /* Erase any pre-dump messages in the message log, to avoid confusion */
1289 Lisp_Object old_log_max
;
1290 old_log_max
= Vmessage_log_max
;
1291 XSETFASTINT (Vmessage_log_max
, 0);
1292 message_dolog ("", 0, 1, 0);
1293 Vmessage_log_max
= old_log_max
;
1296 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1299 /* Intern the names of all standard functions and variables;
1300 define standard keys. */
1304 /* The basic levels of Lisp must come first */
1305 /* And data must come first of all
1306 for the sake of symbols like error-message */
1313 syms_of_floatfns ();
1317 syms_of_bytecode ();
1319 syms_of_casefiddle ();
1321 syms_of_callproc ();
1322 syms_of_category ();
1326 #ifndef NO_DIR_LIBRARY
1328 #endif /* not NO_DIR_LIBRARY */
1334 syms_of_coding (); /* This should be after syms_of_fileio. */
1335 #ifdef CLASH_DETECTION
1336 syms_of_filelock ();
1337 #endif /* CLASH_DETECTION */
1344 syms_of_mocklisp ();
1355 syms_of_textprop ();
1356 syms_of_composite ();
1362 #endif /* WINDOWSNT */
1365 #ifdef HAVE_X_WINDOWS
1372 #endif /* HAVE_X_WINDOWS */
1381 syms_of_w32select ();
1384 #endif /* HAVE_NTGUI */
1394 keys_of_casefiddle ();
1397 keys_of_keyboard ();
1405 if (!noninteractive
)
1408 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1410 init_display (); /* Determine terminal type. init_sys_modes uses results */
1412 init_keyboard (); /* This too must precede init_sys_modes */
1414 init_vmsproc (); /* And this too. */
1416 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1417 #ifdef HAVE_X_WINDOWS
1419 #endif /* HAVE_X_WINDOWS */
1436 /* Handle -l loadup, args passed by Makefile. */
1437 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1438 Vtop_level
= Fcons (intern ("load"),
1439 Fcons (build_string (file
), Qnil
));
1441 /* Unless next switch is -nl, load "loadup.el" first thing. */
1443 Vtop_level
= Fcons (intern ("load"),
1444 Fcons (build_string ("loadup.el"), Qnil
));
1445 #endif /* CANNOT_DUMP */
1452 /* If the execution TZ happens to be the same as the dump TZ,
1453 change it to some other value and then change it back,
1454 to force the underlying implementation to reload the TZ info.
1455 This is needed on implementations that load TZ info from files,
1456 since the TZ file contents may differ between dump and execution. */
1457 char *tz
= getenv ("TZ");
1458 if (tz
&& !strcmp (tz
, dump_tz
))
1468 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1469 FreeBSD. It might work on some other systems too.
1470 Give it a try and tell me if it works on your system. */
1471 #if defined (__FreeBSD__) || defined (__linux)
1475 extern void _mcleanup ();
1477 extern void safe_bcopy ();
1478 extern void dump_opcode_frequencies ();
1481 /* This uses safe_bcopy because that function comes first in the
1482 Emacs executable. It might be better to use something that
1483 gives the start of the text segment, but start_of_text is not
1484 defined on all systems now. */
1485 monstartup (safe_bcopy
, &etext
);
1494 #ifdef LOCALTIME_CACHE
1495 /* Some versions of localtime have a bug. They cache the value of the time
1496 zone rather than looking it up every time. Since localtime() is
1497 called to bolt the undumping time into the undumped emacs, this
1498 results in localtime ignoring the TZ environment variable.
1499 This flushes the new TZ value into localtime. */
1501 #endif /* defined (LOCALTIME_CACHE) */
1503 /* Enter editor command loop. This never returns. */
1508 /* Sort the args so we can find the most important ones
1509 at the beginning of argv. */
1511 /* First, here's a table of all the standard options. */
1513 struct standard_args
1521 struct standard_args standard_args
[] =
1523 { "-version", "--version", 150, 0 },
1525 { "-nl", "--no-shared-memory", 140, 0 },
1528 { "-map", "--map-data", 130, 0 },
1530 { "-t", "--terminal", 120, 1 },
1531 { "-nw", "--no-windows", 110, 0 },
1532 { "-batch", "--batch", 100, 0 },
1533 { "-help", "--help", 90, 0 },
1534 { "-no-unibyte", "--no-unibyte", 83, 0 },
1535 { "-multibyte", "--multibyte", 82, 0 },
1536 { "-unibyte", "--unibyte", 81, 0 },
1537 { "-no-multibyte", "--no-multibyte", 80, 0 },
1539 { "-nl", "--no-loadup", 70, 0 },
1541 /* -d must come last before the options handled in startup.el. */
1542 { "-d", "--display", 60, 1 },
1543 { "-display", 0, 60, 1 },
1544 /* Now for the options handled in startup.el. */
1545 { "-q", "--no-init-file", 50, 0 },
1546 { "-no-init-file", 0, 50, 0 },
1547 { "-no-site-file", "--no-site-file", 40, 0 },
1548 { "-u", "--user", 30, 1 },
1549 { "-user", 0, 30, 1 },
1550 { "-debug-init", "--debug-init", 20, 0 },
1551 { "-i", "--icon-type", 15, 0 },
1552 { "-itype", 0, 15, 0 },
1553 { "-iconic", "--iconic", 15, 0 },
1554 { "-bg", "--background-color", 10, 1 },
1555 { "-background", 0, 10, 1 },
1556 { "-fg", "--foreground-color", 10, 1 },
1557 { "-foreground", 0, 10, 1 },
1558 { "-bd", "--border-color", 10, 1 },
1559 { "-bw", "--border-width", 10, 1 },
1560 { "-ib", "--internal-border", 10, 1 },
1561 { "-ms", "--mouse-color", 10, 1 },
1562 { "-cr", "--cursor-color", 10, 1 },
1563 { "-fn", "--font", 10, 1 },
1564 { "-font", 0, 10, 1 },
1565 { "-g", "--geometry", 10, 1 },
1566 { "-geometry", 0, 10, 1 },
1567 { "-T", "--title", 10, 1 },
1568 { "-title", 0, 10, 1 },
1569 { "-name", "--name", 10, 1 },
1570 { "-xrm", "--xrm", 10, 1 },
1571 { "-r", "--reverse-video", 5, 0 },
1573 { "-reverse", 0, 5, 0 },
1574 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1575 { "-vb", "--vertical-scroll-bars", 5, 0 },
1576 /* These have the same priority as ordinary file name args,
1577 so they are not reordered with respect to those. */
1578 { "-L", "--directory", 0, 1 },
1579 { "-directory", 0, 0, 1 },
1580 { "-l", "--load", 0, 1 },
1581 { "-load", 0, 0, 1 },
1582 { "-f", "--funcall", 0, 1 },
1583 { "-funcall", 0, 0, 1 },
1584 { "-eval", "--eval", 0, 1 },
1585 { "-execute", "--execute", 0, 1 },
1586 { "-find-file", "--find-file", 0, 1 },
1587 { "-visit", "--visit", 0, 1 },
1588 { "-file", "--file", 0, 1 },
1589 { "-insert", "--insert", 0, 1 },
1590 /* This should be processed after ordinary file name args and the like. */
1591 { "-kill", "--kill", -10, 0 },
1594 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1595 so that the highest priority ones come first.
1596 Do not change the order of elements of equal priority.
1597 If an option takes an argument, keep it and its argument together.
1599 If an option that takes no argument appears more
1600 than once, eliminate all but one copy of it. */
1603 sort_args (argc
, argv
)
1607 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1608 /* For each element of argv,
1609 the corresponding element of options is:
1610 0 for an option that takes no arguments,
1611 1 for an option that takes one argument, etc.
1612 -1 for an ordinary non-option argument. */
1613 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1614 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1616 int incoming_used
= 1;
1620 /* Categorize all the options,
1621 and figure out which argv elts are option arguments. */
1622 for (from
= 1; from
< argc
; from
++)
1626 if (argv
[from
][0] == '-')
1631 /* If we have found "--", don't consider
1632 any more arguments as options. */
1633 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1635 /* Leave the "--", and everything following it, at the end. */
1636 for (; from
< argc
; from
++)
1638 priority
[from
] = -100;
1644 /* Look for a match with a known old-fashioned option. */
1645 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1646 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1648 options
[from
] = standard_args
[i
].nargs
;
1649 priority
[from
] = standard_args
[i
].priority
;
1650 if (from
+ standard_args
[i
].nargs
>= argc
)
1651 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1652 from
+= standard_args
[i
].nargs
;
1656 /* Look for a match with a known long option.
1657 MATCH is -1 if no match so far, -2 if two or more matches so far,
1658 >= 0 (the table index of the match) if just one match so far. */
1659 if (argv
[from
][1] == '-')
1662 thislen
= strlen (argv
[from
]);
1663 equals
= index (argv
[from
], '=');
1665 thislen
= equals
- argv
[from
];
1668 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1669 if (standard_args
[i
].longname
1670 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1679 /* If we found exactly one match, use that. */
1682 options
[from
] = standard_args
[match
].nargs
;
1683 priority
[from
] = standard_args
[match
].priority
;
1684 /* If --OPTION=VALUE syntax is used,
1685 this option uses just one argv element. */
1688 if (from
+ options
[from
] >= argc
)
1689 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1690 from
+= options
[from
];
1697 /* Copy the arguments, in order of decreasing priority, to NEW. */
1699 while (incoming_used
< argc
)
1702 int best_priority
= -9999;
1704 /* Find the highest priority remaining option.
1705 If several have equal priority, take the first of them. */
1706 for (from
= 1; from
< argc
; from
++)
1708 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1710 best_priority
= priority
[from
];
1713 /* Skip option arguments--they are tied to the options. */
1714 if (options
[from
] > 0)
1715 from
+= options
[from
];
1721 /* Copy the highest priority remaining option, with its args, to NEW.
1722 Unless it is a duplicate of the previous one. */
1723 if (! (options
[best
] == 0
1724 && ! strcmp (new[to
- 1], argv
[best
])))
1726 new[to
++] = argv
[best
];
1727 for (i
= 0; i
< options
[best
]; i
++)
1728 new[to
++] = argv
[best
+ i
+ 1];
1731 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1733 /* Clear out this option in ARGV. */
1735 for (i
= 0; i
< options
[best
]; i
++)
1736 argv
[best
+ i
+ 1] = 0;
1739 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1743 bcopy (new, argv
, sizeof (char *) * argc
);
1750 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1751 "Exit the Emacs job and kill it.\n\
1752 If ARG is an integer, return ARG as the exit program code.\n\
1753 If ARG is a string, stuff it as keyboard input.\n\n\
1754 The value of `kill-emacs-hook', if not void,\n\
1755 is a list of functions (of no args),\n\
1756 all of which are called before Emacs is actually killed.")
1760 struct gcpro gcpro1
;
1767 if (!NILP (Vrun_hooks
) && !noninteractive
)
1768 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1772 /* Is it really necessary to do this deassign
1773 when we are going to exit anyway? */
1778 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1780 /* If we have an auto-save list file,
1781 kill it because we are exiting Emacs deliberately (not crashing).
1782 Do it after shut_down_emacs, which does an auto-save. */
1783 if (STRINGP (Vauto_save_list_file_name
))
1784 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1786 exit (INTEGERP (arg
) ? XINT (arg
)
1797 /* Perform an orderly shutdown of Emacs. Autosave any modified
1798 buffers, kill any child processes, clean up the terminal modes (if
1799 we're in the foreground), and other stuff like that. Don't perform
1800 any redisplay; this may be called when Emacs is shutting down in
1801 the background, or after its X connection has died.
1803 If SIG is a signal number, print a message for it.
1805 This is called by fatal signal handlers, X protocol error handlers,
1809 shut_down_emacs (sig
, no_x
, stuff
)
1813 /* Prevent running of hooks from now on. */
1816 /* If we are controlling the terminal, reset terminal modes */
1817 #ifdef EMACS_HAVE_TTY_PGRP
1819 int pgrp
= EMACS_GETPGRP (0);
1822 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1827 if (sig
&& sig
!= SIGTERM
)
1828 fprintf (stderr
, "Fatal error (%d).", sig
);
1836 stuff_buffered_input (stuff
);
1838 kill_buffer_processes (Qnil
);
1839 Fdo_auto_save (Qt
, Qnil
);
1841 #ifdef CLASH_DETECTION
1842 unlock_all_files ();
1846 kill_vms_processes ();
1849 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1850 #ifdef HAVE_X_WINDOWS
1851 /* It's not safe to call intern here. Maybe we are crashing. */
1852 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1853 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1854 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1856 Fx_close_current_connection ();
1857 #endif /* HAVE_X_WINDOWS */
1861 /* There is a tendency for a SIGIO signal to arrive within exit,
1862 and cause a SIGHUP because the input descriptor is already closed. */
1864 signal (SIGIO
, SIG_IGN
);
1871 check_glyph_memory ();
1872 check_message_stack ();
1885 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1886 "Dump current state of Emacs into data file FILENAME.\n\
1887 This function exists on systems that use HAVE_SHM.")
1889 Lisp_Object filename
;
1891 extern char my_edata
[];
1894 CHECK_STRING (filename
, 0);
1895 filename
= Fexpand_file_name (filename
, Qnil
);
1898 Vpurify_flag
= Qnil
;
1901 /* Tell malloc where start of impure now is */
1902 /* Also arrange for warnings when nearly out of space. */
1903 #ifndef SYSTEM_MALLOC
1904 memory_warnings (my_edata
, malloc_warning
);
1906 map_out_data (XSTRING (filename
)->data
);
1913 #else /* not HAVE_SHM */
1915 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1916 "Dump current state of Emacs into executable file FILENAME.\n\
1917 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1918 This is used in the file `loadup.el' when building Emacs.\n\
1920 You must run Emacs in batch mode in order to dump it.")
1922 Lisp_Object filename
, symfile
;
1924 extern char my_edata
[];
1927 int count
= specpdl_ptr
- specpdl
;
1929 if (! noninteractive
)
1930 error ("Dumping Emacs works only in batch mode");
1932 /* Bind `command-line-processed' to nil before dumping,
1933 so that the dumped Emacs will process its command line
1934 and set up to work with X windows if appropriate. */
1935 symbol
= intern ("command-line-process");
1936 specbind (symbol
, Qnil
);
1938 CHECK_STRING (filename
, 0);
1939 filename
= Fexpand_file_name (filename
, Qnil
);
1940 if (!NILP (symfile
))
1942 CHECK_STRING (symfile
, 0);
1943 if (XSTRING (symfile
)->size
)
1944 symfile
= Fexpand_file_name (symfile
, Qnil
);
1948 Vpurify_flag
= Qnil
;
1951 set_time_zone_rule (dump_tz
);
1952 #ifndef LOCALTIME_CACHE
1953 /* Force a tz reload, since set_time_zone_rule doesn't. */
1960 mapout_data (XSTRING (filename
)->data
);
1962 /* Tell malloc where start of impure now is */
1963 /* Also arrange for warnings when nearly out of space. */
1964 #ifndef SYSTEM_MALLOC
1966 /* On Windows, this was done before dumping, and that once suffices.
1967 Meanwhile, my_edata is not valid on Windows. */
1968 memory_warnings (my_edata
, malloc_warning
);
1969 #endif /* not WINDOWSNT */
1971 #ifdef DOUG_LEA_MALLOC
1972 malloc_state_ptr
= malloc_get_state ();
1974 unexec (XSTRING (filename
)->data
,
1975 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1976 #ifdef DOUG_LEA_MALLOC
1977 free (malloc_state_ptr
);
1979 #endif /* not VMS */
1983 return unbind_to (count
, Qnil
);
1986 #endif /* not HAVE_SHM */
1988 #endif /* not CANNOT_DUMP */
1991 /* Recover from setlocale (LC_ALL, ""). */
1995 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
1996 so that numbers are read and printed properly for Emacs Lisp. */
1997 setlocale (LC_NUMERIC
, "C");
2000 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2003 synchronize_locale (category
, plocale
, desired_locale
)
2005 Lisp_Object
*plocale
;
2006 Lisp_Object desired_locale
;
2008 if (! EQ (*plocale
, desired_locale
))
2010 *plocale
= desired_locale
;
2011 setlocale (category
, (STRINGP (desired_locale
)
2012 ? (char *)(XSTRING (desired_locale
)->data
)
2017 /* Set system time locale to match Vsystem_time_locale, if possible. */
2019 synchronize_system_time_locale ()
2021 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2022 Vsystem_time_locale
);
2025 /* Set system messages locale to match Vsystem_messages_locale, if
2028 synchronize_system_messages_locale ()
2031 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2032 Vsystem_messages_locale
);
2035 #endif /* HAVE_SETLOCALE */
2042 decode_env_path (evarname
, defalt
)
2043 char *evarname
, *defalt
;
2045 register char *path
, *p
;
2046 Lisp_Object lpath
, element
, tem
;
2048 /* It's okay to use getenv here, because this function is only used
2049 to initialize variables when Emacs starts up, and isn't called
2052 path
= (char *) getenv (evarname
);
2058 /* Ensure values from the environment use the proper directory separator. */
2061 p
= alloca (strlen (path
) + 1);
2065 if ('/' == DIRECTORY_SEP
)
2066 dostounix_filename (path
);
2068 unixtodos_filename (path
);
2074 p
= index (path
, SEPCHAR
);
2075 if (!p
) p
= path
+ strlen (path
);
2076 element
= (p
- path
? make_string (path
, p
- path
)
2077 : build_string ("."));
2079 /* Add /: to the front of the name
2080 if it would otherwise be treated as magic. */
2081 tem
= Ffind_file_name_handler (element
, Qt
);
2083 element
= concat2 (build_string ("/:"), element
);
2085 lpath
= Fcons (element
, lpath
);
2091 return Fnreverse (lpath
);
2097 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2098 staticpro (&Qfile_name_handler_alist
);
2102 defsubr (&Sdump_emacs_data
);
2104 defsubr (&Sdump_emacs
);
2108 defsubr (&Skill_emacs
);
2110 defsubr (&Sinvocation_name
);
2111 defsubr (&Sinvocation_directory
);
2113 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2114 "Args passed by shell to Emacs, as a list of strings.");
2116 DEFVAR_LISP ("system-type", &Vsystem_type
,
2117 "Value is symbol indicating type of operating system you are using.");
2118 Vsystem_type
= intern (SYSTEM_TYPE
);
2120 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2121 "Value is string indicating configuration Emacs was built for.");
2122 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2124 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2125 "String containing the configuration options Emacs was built with.");
2126 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2128 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2129 "Non-nil means Emacs is running without interactive terminal.");
2131 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2132 "Hook to be run whenever kill-emacs is called.\n\
2133 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
2134 in other similar situations), functions placed on this hook should not\n\
2135 expect to be able to interact with the user. To ask for confirmation,\n\
2136 see `kill-emacs-query-functions' instead.");
2137 Vkill_emacs_hook
= Qnil
;
2140 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2141 "Hook to be run whenever emacs receives a USR1 signal");
2142 Vsignal_USR1_hook
= Qnil
;
2144 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2145 "Hook to be run whenever emacs receives a USR2 signal");
2146 Vsignal_USR2_hook
= Qnil
;
2151 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2152 "Priority for Emacs to run at.\n\
2153 This value is effective only if set before Emacs is dumped,\n\
2154 and only if the Emacs executable is installed with setuid to permit\n\
2155 it to change priority. (Emacs sets its uid back to the real uid.)\n\
2156 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
2157 before you compile Emacs, to enable the code for this feature.");
2160 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2161 "The directory separator in search paths, as a string.");
2164 Vpath_separator
= make_string (&c
, 1);
2167 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2168 "The program name that was used to run Emacs.\n\
2169 Any directory names are omitted.");
2171 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2172 "The directory in which the Emacs executable was found, to run it.\n\
2173 The value is nil if that directory's name is not known.");
2175 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2176 "A directory within which to look for the `lib-src' and `etc' directories.\n\
2177 This is non-nil when we can't find those directories in their standard\n\
2178 installed locations, but we can find them\n\
2179 near where the Emacs executable was found.");
2180 Vinstallation_directory
= Qnil
;
2182 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2183 "System locale for messages.");
2184 Vsystem_messages_locale
= Qnil
;
2186 DEFVAR_LISP ("previous-system-messages-locale",
2187 &Vprevious_system_messages_locale
,
2188 "Most recently used system locale for messages.");
2189 Vprevious_system_messages_locale
= Qnil
;
2191 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2192 "System locale for time.");
2193 Vsystem_time_locale
= Qnil
;
2195 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2196 "Most recently used system locale for time.");
2197 Vprevious_system_time_locale
= Qnil
;