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)
69 #define setpgrp setpgid
73 extern void malloc_warning ();
74 extern void set_time_zone_rule ();
75 extern char *index ();
77 /* Make these values available in GDB, which doesn't see macros. */
79 EMACS_INT gdb_valbits
= VALBITS
;
80 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
81 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
83 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
85 EMACS_INT gdb_data_seg_bits
= 0;
87 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
89 /* Command line args from shell, as list of strings */
90 Lisp_Object Vcommand_line_args
;
92 /* The name under which Emacs was invoked, with any leading directory
94 Lisp_Object Vinvocation_name
;
96 /* The directory name from which Emacs was invoked. */
97 Lisp_Object Vinvocation_directory
;
99 /* The directory name in which to find subdirs such as lisp and etc.
100 nil means get them only from PATH_LOADSEARCH. */
101 Lisp_Object Vinstallation_directory
;
103 /* Hook run by `kill-emacs' before it does really anything. */
104 Lisp_Object Vkill_emacs_hook
;
107 /* Hooks for signal USR1 and USR2 handing */
108 Lisp_Object Vsignal_USR1_hook
;
110 Lisp_Object Vsignal_USR2_hook
;
114 /* Search path separator. */
115 Lisp_Object Vpath_separator
;
117 /* Set nonzero after Emacs has started up the first time.
118 Prevents reinitialization of the Lisp world and keymaps
119 on subsequent starts. */
122 #ifdef DOUG_LEA_MALLOC
123 /* Preserves a pointer to the memory allocated that copies that
124 static data inside glibc's malloc. */
125 void *malloc_state_ptr
;
126 /* From glibc, a routine that returns a copy of the malloc internal state. */
127 extern void *malloc_get_state ();
128 /* From glibc, a routine that overwrites the malloc internal state. */
129 extern void malloc_set_state ();
130 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
131 dumping. Used to work around a bug in glibc's malloc. */
132 int malloc_using_checking
;
135 /* Variable whose value is symbol giving operating system type. */
136 Lisp_Object Vsystem_type
;
138 /* Variable whose value is string giving configuration built for. */
139 Lisp_Object Vsystem_configuration
;
141 /* Variable whose value is string giving configuration options,
142 for use when reporting bugs. */
143 Lisp_Object Vsystem_configuration_options
;
145 Lisp_Object Qfile_name_handler_alist
;
147 /* Current and previous system locales for messages and time. */
148 Lisp_Object Vsystem_messages_locale
;
149 Lisp_Object Vprevious_system_messages_locale
;
150 Lisp_Object Vsystem_time_locale
;
151 Lisp_Object Vprevious_system_time_locale
;
153 /* If non-zero, emacs should not attempt to use an window-specific code,
154 but instead should use the virtual terminal under which it was started */
155 int inhibit_window_system
;
157 /* If nonzero, set Emacs to run at this priority. This is also used
158 in child_setup and sys_suspend to make sure subshells run at normal
159 priority; Those functions have their own extern declaration. */
162 /* If non-zero a filter or a sentinel is running. Tested to save the match
163 data on the first attempt to change it inside asynchronous code. */
164 int running_asynch_code
;
168 extern int inherited_pgroup
;
171 #ifdef HAVE_X_WINDOWS
172 /* If non-zero, -d was specified, meaning we're using some window system. */
176 /* An address near the bottom of the stack.
177 Tells GC how to save a copy of the stack. */
180 #ifdef HAVE_WINDOW_SYSTEM
181 extern Lisp_Object Vwindow_system
;
182 #endif /* HAVE_WINDOW_SYSTEM */
184 extern Lisp_Object Vauto_save_list_file_name
;
186 #ifdef USG_SHARED_LIBRARIES
187 /* If nonzero, this is the place to put the end of the writable segment
190 unsigned int bss_end
= 0;
193 /* Nonzero means running Emacs without interactive terminal. */
197 /* Value of Lisp variable `noninteractive'.
198 Normally same as C variable `noninteractive'
199 but nothing terrible happens if user sets this one. */
203 /* Save argv and argc. */
207 static void sort_args ();
208 void syms_of_emacs ();
211 Usage: %s [OPTION-OR-FILENAME]...\n\
213 Run Emacs, the extensible, customizable, self-documenting real-time\n\
214 display editor. The recommended way to start Emacs for normal editing\n\
215 is with no options at all.\n\
217 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
218 read the main documentation for these command-line arguments.\n\
220 Initialization options:\n\
222 --batch do not do interactive display; implies -q\n\
223 --debug-init enable Emacs Lisp debugger during init file\n\
224 --help display this help message and exit\n\
225 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
226 --no-init-file, -q load neither ~/.emacs nor default.el\n\
227 --no-shared-memory, -nl do not use shared memory\n\
228 --no-site-file do not load site-start.el\n\
229 --no-windows, -nw don't communicate with X, ignoring $DISPLAY\n\
230 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
231 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
232 --user, -u USER load ~USER/.emacs instead of your own\n\
233 --version display version information and exit\n\
237 FILE visit FILE using find-file\n\
238 +LINENUM FILE visit FILE using find-file, then go to line LINENUM\n\
239 --directory, -L DIR add DIR to variable load-path\n\
240 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
241 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
242 --find-file FILE visit FILE\n\
243 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
244 --insert FILE insert contents of FILE into current buffer\n\
245 --kill exit without asking for confirmation\n\
246 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
247 --visit FILE visit FILE\n\
253 --background-color, -bg COLOR window background color\n\
254 --border-color, -bd COLOR main border color\n\
255 --border-width, -bw WIDTH width of main border\n\
256 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
257 --display, -d DISPLAY use X server DISPLAY\n\
258 --font, -fn FONT default font; must be fixed-widthp\n\
259 --foreground-color, -fg COLOR window foreground color\n\
260 --geometry, -g GEOMETRY window geometry\n\
261 --iconic start Emacs in iconified state\n\
262 --icon-type, -i use picture of gnu for Emacs icon\n\
263 --internal-border, -ib WIDTH width between text and main border\n\
264 --line-spacing, -lsp PIXELS additional space to put between lines\n\
265 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
266 --name NAME title of main Emacs window\n\
267 --reverse-video, -r, -rv switch foreground and background\n\
268 --title, -T, -wn, TITLE title for Emacs windows\n\
269 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
270 --xrm XRESOURCES set additional X resources\n\
272 You can generally also specify long option names with a single -; for\n\
273 example, -batch as well as --batch. You can use any unambiguous\n\
274 abbreviation for a --option.\n\
276 Various environment variables and window system resources also affect\n\
277 Emacs' operation. See the main documentation.\n\
279 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
280 section of the Emacs manual or the file BUGS.\n"
283 /* Signal code for the fatal signal that was received */
284 int fatal_error_code
;
286 /* Nonzero if handling a fatal error already */
287 int fatal_error_in_progress
;
291 handle_USR1_signal (sig
)
294 struct input_event buf
;
296 buf
.kind
= user_signal
;
298 buf
.frame_or_window
= selected_frame
;
302 kbd_buffer_store_event (&buf
);
308 handle_USR2_signal (sig
)
311 struct input_event buf
;
313 buf
.kind
= user_signal
;
315 buf
.frame_or_window
= selected_frame
;
319 kbd_buffer_store_event (&buf
);
323 /* Handle bus errors, invalid instruction, etc. */
325 fatal_error_signal (sig
)
328 fatal_error_code
= sig
;
329 signal (sig
, SIG_DFL
);
331 TOTALLY_UNBLOCK_INPUT
;
333 /* If fatal error occurs in code below, avoid infinite recursion. */
334 if (! fatal_error_in_progress
)
336 fatal_error_in_progress
= 1;
338 shut_down_emacs (sig
, 0, Qnil
);
342 LIB$
STOP (SS$_ABORT
);
344 /* Signal the same code; this time it will really be fatal.
345 Remember that since we're in a signal handler, the signal we're
346 going to send is probably blocked, so we have to unblock it if we
347 want to really receive it. */
349 sigunblock (sigmask (fatal_error_code
));
351 kill (getpid (), fatal_error_code
);
357 /* Handler for SIGDANGER. */
359 memory_warning_signal (sig
)
362 signal (sig
, memory_warning_signal
);
364 malloc_warning ("Operating system warns that virtual memory is running low.\n");
366 /* It might be unsafe to call do_auto_save now. */
367 force_auto_save_soon ();
371 /* We define abort, rather than using it from the library,
372 so that GDB can return from a breakpoint here.
373 MSDOS has its own definition on msdos.c */
375 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
377 #ifndef ABORT_RETURN_TYPE
378 #define ABORT_RETURN_TYPE void
384 kill (getpid (), SIGABRT
);
385 /* This shouldn't be executed, but it prevents a warning. */
391 /* Code for dealing with Lisp access to the Unix command line */
394 init_cmdargs (argc
, argv
, skip_args
)
400 Lisp_Object name
, dir
, tem
;
401 int count
= specpdl_ptr
- specpdl
;
402 Lisp_Object raw_name
;
407 raw_name
= build_string (argv
[0]);
409 /* Add /: to the front of the name
410 if it would otherwise be treated as magic. */
411 tem
= Ffind_file_name_handler (raw_name
, Qt
);
413 raw_name
= concat2 (build_string ("/:"), raw_name
);
415 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
416 Vinvocation_directory
= Ffile_name_directory (raw_name
);
418 /* If we got no directory in argv[0], search PATH to find where
419 Emacs actually came from. */
420 if (NILP (Vinvocation_directory
))
423 int yes
= openp (Vexec_path
, Vinvocation_name
,
424 EXEC_SUFFIXES
, &found
, 1);
427 /* Add /: to the front of the name
428 if it would otherwise be treated as magic. */
429 tem
= Ffind_file_name_handler (found
, Qt
);
431 found
= concat2 (build_string ("/:"), found
);
432 Vinvocation_directory
= Ffile_name_directory (found
);
436 if (!NILP (Vinvocation_directory
)
437 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
438 /* Emacs was started with relative path, like ./emacs.
440 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
442 Vinstallation_directory
= Qnil
;
444 if (!NILP (Vinvocation_directory
))
446 dir
= Vinvocation_directory
;
447 name
= Fexpand_file_name (Vinvocation_name
, dir
);
450 Lisp_Object tem
, lib_src_exists
;
451 Lisp_Object etc_exists
, info_exists
;
453 /* See if dir contains subdirs for use by Emacs.
454 Check for the ones that would exist in a build directory,
455 not including lisp and info. */
456 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
457 lib_src_exists
= Ffile_exists_p (tem
);
460 /* MSDOS installations frequently remove lib-src, but we still
461 must set installation-directory, or else info won't find
462 its files (it uses the value of installation-directory). */
463 tem
= Fexpand_file_name (build_string ("info"), dir
);
464 info_exists
= Ffile_exists_p (tem
);
469 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
471 tem
= Fexpand_file_name (build_string ("etc"), dir
);
472 etc_exists
= Ffile_exists_p (tem
);
473 if (!NILP (etc_exists
))
475 Vinstallation_directory
476 = Ffile_name_as_directory (dir
);
481 /* See if dir's parent contains those subdirs. */
482 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
483 lib_src_exists
= Ffile_exists_p (tem
);
487 /* See the MSDOS commentary above. */
488 tem
= Fexpand_file_name (build_string ("../info"), dir
);
489 info_exists
= Ffile_exists_p (tem
);
494 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
496 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
497 etc_exists
= Ffile_exists_p (tem
);
498 if (!NILP (etc_exists
))
500 tem
= Fexpand_file_name (build_string (".."), dir
);
501 Vinstallation_directory
502 = Ffile_name_as_directory (tem
);
507 /* If the Emacs executable is actually a link,
508 next try the dir that the link points into. */
509 tem
= Ffile_symlink_p (name
);
512 name
= Fexpand_file_name (tem
, dir
);
513 dir
= Ffile_name_directory (name
);
520 Vcommand_line_args
= Qnil
;
522 for (i
= argc
- 1; i
>= 0; i
--)
524 if (i
== 0 || i
> skip_args
)
526 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
529 unbind_to (count
, Qnil
);
532 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
533 "Return the program name that was used to run Emacs.\n\
534 Any directory names are omitted.")
537 return Fcopy_sequence (Vinvocation_name
);
540 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
542 "Return the directory name in which the Emacs executable was located")
545 return Fcopy_sequence (Vinvocation_directory
);
550 #ifdef LINK_CRTL_SHARE
551 #ifdef SHARABLE_LIB_BUG
552 extern noshare
char **environ
;
553 #endif /* SHARABLE_LIB_BUG */
554 #endif /* LINK_CRTL_SHARE */
558 /* A valid but unlikely value for the TZ environment value.
559 It is OK (though a bit slower) if the user actually chooses this value. */
560 static char dump_tz
[] = "UtC0";
563 #ifndef ORDINARY_LINK
564 /* We don't include crtbegin.o and crtend.o in the link,
565 so these functions and variables might be missed.
566 Provide dummy definitions to avoid error.
567 (We don't have any real constructors or destructors.) */
569 #ifndef GCC_CTORS_IN_LIBC
570 void __do_global_ctors ()
572 void __do_global_ctors_aux ()
574 void __do_global_dtors ()
576 /* Linux has a bug in its library; avoid an error. */
578 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
580 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
581 #endif /* GCC_CTORS_IN_LIBC */
584 #endif /* __GNUC__ */
585 #endif /* ORDINARY_LINK */
587 /* Test whether the next argument in ARGV matches SSTR or a prefix of
588 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
589 (the argument is supposed to have a value) store in *VALPTR either
590 the next argument or the portion of this one after the equal sign.
591 ARGV is read starting at position *SKIPPTR; this index is advanced
592 by the number of arguments used.
594 Too bad we can't just use getopt for all of this, but we don't have
595 enough information to do it right. */
598 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
611 /* Don't access argv[argc]; give up in advance. */
612 if (argc
<= *skipptr
+ 1)
615 arg
= argv
[*skipptr
+1];
618 if (strcmp (arg
, sstr
) == 0)
622 *valptr
= argv
[*skipptr
+2];
629 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
630 ? p
- arg
: strlen (arg
));
631 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
633 else if (valptr
== NULL
)
644 else if (argv
[*skipptr
+2] != NULL
)
646 *valptr
= argv
[*skipptr
+2];
656 #ifdef DOUG_LEA_MALLOC
658 /* malloc can be invoked even before main (e.g. by the dynamic
659 linker), so the dumped malloc state must be restored as early as
660 possible using this special hook. */
663 malloc_initialize_hook ()
665 extern char **environ
;
669 if (!malloc_using_checking
)
670 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
671 ignored if the heap to be restored was constructed without
672 malloc checking. Can't use unsetenv, since that calls malloc. */
676 for (p
= environ
; *p
; p
++)
677 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
686 malloc_set_state (malloc_state_ptr
);
687 free (malloc_state_ptr
);
690 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
693 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
695 #endif /* DOUG_LEA_MALLOC */
699 main (argc
, argv
, envp
)
707 char stack_bottom_variable
;
708 int do_initial_setlocale
;
712 #ifdef HAVE_SETRLIMIT
718 extern Lisp_Object
*stack_base
;
722 #ifdef LINUX_SBRK_BUG
726 #ifdef RUN_TIME_REMAP
728 run_time_remap (argv
[0]);
731 sort_args (argc
, argv
);
733 while (argv
[argc
]) argc
++;
735 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
736 /* We don't know the version number unless this is a dumped Emacs.
737 So ignore --version otherwise. */
741 tem
= Fsymbol_value (intern ("emacs-version"));
744 fprintf (stderr
, "Invalid value of `emacs-version'\n");
749 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
750 printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
751 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
752 printf ("You may redistribute copies of Emacs\n");
753 printf ("under the terms of the GNU General Public License.\n");
754 printf ("For more information about these matters, ");
755 printf ("see the file named COPYING.\n");
760 /* Map in shared memory, if we are using that. */
762 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
765 /* The shared memory was just restored, which clobbered this. */
771 /* The shared memory was just restored, which clobbered this. */
778 extern int malloc_cookie
;
779 /* This helps out unexnext.c. */
781 if (malloc_jumpstart (malloc_cookie
) != 0)
782 printf ("malloc jumpstart failed!\n");
787 /* If -map specified, map the data file in */
790 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
794 #ifdef LINK_CRTL_SHARE
795 #ifdef SHARABLE_LIB_BUG
796 /* Bletcherous shared libraries! */
798 stdin
= fdopen (0, "r");
800 stdout
= fdopen (1, "w");
802 stderr
= fdopen (2, "w");
805 #endif /* SHARABLE_LIB_BUG */
806 #endif /* LINK_CRTL_SHARE */
809 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
810 /* Extend the stack space available.
811 Don't do that if dumping, since some systems (e.g. DJGPP)
812 might define a smaller stack limit at that time. */
815 && (!noninteractive
|| initialized
)
817 && !getrlimit (RLIMIT_STACK
, &rlim
))
820 extern int re_max_failures
;
821 /* Approximate the amount regex.c needs per unit of re_max_failures. */
822 int ratio
= 20 * sizeof (char *);
823 /* Then add 33% to cover the size of the smaller stacks that regex.c
824 successively allocates and discards, on its way to the maximum. */
826 /* Add in some extra to cover
827 what we're likely to use for other reasons. */
828 newlim
= re_max_failures
* ratio
+ 200000;
830 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
831 stack allocation routine for new process that the allocation
832 fails if stack limit is not on page boundary. So, round up the
833 new limit to page boundary. */
834 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
836 if (newlim
> rlim
.rlim_max
)
838 newlim
= rlim
.rlim_max
;
839 /* Don't let regex.c overflow the stack we have. */
840 re_max_failures
= (newlim
- 200000) / ratio
;
842 if (rlim
.rlim_cur
< newlim
)
843 rlim
.rlim_cur
= newlim
;
845 setrlimit (RLIMIT_STACK
, &rlim
);
847 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
849 /* Record (approximately) where the stack begins. */
850 stack_bottom
= &stack_bottom_variable
;
852 #ifdef USG_SHARED_LIBRARIES
854 brk ((void *)bss_end
);
859 #ifndef SYSTEM_MALLOC
860 /* Arrange to get warning messages as memory fills up. */
861 memory_warnings (0, malloc_warning
);
863 /* Call malloc at least once, to run the initial __malloc_hook.
864 Also call realloc and free for consistency. */
865 free (realloc (malloc (4), 4));
867 /* Arrange to disable interrupt input inside malloc etc. */
868 uninterrupt_malloc ();
869 #endif /* not SYSTEM_MALLOC */
872 /* We do all file input/output as binary files. When we need to translate
873 newlines, we do that manually. */
877 if (!isatty (fileno (stdin
)))
878 setmode (fileno (stdin
), O_BINARY
);
879 if (!isatty (fileno (stdout
)))
882 setmode (fileno (stdout
), O_BINARY
);
884 #else /* not __DJGPP__ >= 2 */
885 (stdin
)->_flag
&= ~_IOTEXT
;
886 (stdout
)->_flag
&= ~_IOTEXT
;
887 (stderr
)->_flag
&= ~_IOTEXT
;
888 #endif /* not __DJGPP__ >= 2 */
891 #ifdef SET_EMACS_PRIORITY
893 nice (emacs_priority
);
895 #endif /* SET_EMACS_PRIORITY */
897 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
898 The build procedure uses this while dumping, to ensure that the
899 dumped Emacs does not have its system locale tables initialized,
900 as that might cause screwups when the dumped Emacs starts up. */
902 char *lc_all
= getenv ("LC_ALL");
903 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
906 /* Set locale now, so that initial error messages are localized properly.
907 fixup_locale must wait until later, since it builds strings. */
908 if (do_initial_setlocale
)
909 setlocale (LC_ALL
, "");
911 #ifdef EXTRA_INITIALIZE
915 inhibit_window_system
= 0;
917 /* Handle the -t switch, which specifies filename to use as terminal */
921 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
926 result
= emacs_open (term
, O_RDWR
, 0);
929 char *errstring
= strerror (errno
);
930 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
936 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
939 fprintf (stderr
, "Using %s\n", term
);
940 #ifdef HAVE_WINDOW_SYSTEM
941 inhibit_window_system
= 1; /* -t => -nw */
948 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
949 inhibit_window_system
= 1;
951 /* Handle the -batch switch, which means don't do interactive display. */
953 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
956 /* Handle the --help option, which gives a usage message.. */
957 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
959 printf (USAGE1
, argv
[0]);
964 if (! noninteractive
)
969 inherited_pgroup
= EMACS_GETPGRP (0);
970 setpgrp (0, getpid ());
973 #if defined (USG5) && defined (INTERRUPT_INPUT)
981 /* Don't catch SIGHUP if dumping. */
988 sigblock (sigmask (SIGHUP
));
989 /* In --batch mode, don't catch SIGHUP if already ignored.
990 That makes nohup work. */
992 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
993 signal (SIGHUP
, fatal_error_signal
);
994 sigunblock (sigmask (SIGHUP
));
999 ! noninteractive
|| initialized
1005 /* Don't catch these signals in batch mode if dumping.
1006 On some machines, this sets static data that would make
1007 signal fail to work right when the dumped Emacs is run. */
1008 signal (SIGQUIT
, fatal_error_signal
);
1009 signal (SIGILL
, fatal_error_signal
);
1010 signal (SIGTRAP
, fatal_error_signal
);
1012 signal (SIGUSR1
, handle_USR1_signal
);
1014 signal (SIGUSR2
, handle_USR2_signal
);
1018 signal (SIGABRT
, fatal_error_signal
);
1021 signal (SIGHWE
, fatal_error_signal
);
1024 signal (SIGPRE
, fatal_error_signal
);
1027 signal (SIGORE
, fatal_error_signal
);
1030 signal (SIGUME
, fatal_error_signal
);
1033 signal (SIGDLK
, fatal_error_signal
);
1036 signal (SIGCPULIM
, fatal_error_signal
);
1039 /* This is missing on some systems - OS/2, for example. */
1040 signal (SIGIOT
, fatal_error_signal
);
1043 signal (SIGEMT
, fatal_error_signal
);
1045 signal (SIGFPE
, fatal_error_signal
);
1047 signal (SIGBUS
, fatal_error_signal
);
1049 signal (SIGSEGV
, fatal_error_signal
);
1051 signal (SIGSYS
, fatal_error_signal
);
1053 signal (SIGTERM
, fatal_error_signal
);
1055 signal (SIGXCPU
, fatal_error_signal
);
1058 signal (SIGXFSZ
, fatal_error_signal
);
1059 #endif /* SIGXFSZ */
1062 /* This just means available memory is getting low. */
1063 signal (SIGDANGER
, memory_warning_signal
);
1067 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1068 signal (SIGXCPU
, fatal_error_signal
);
1070 signal (SIGIOINT
, fatal_error_signal
);
1072 signal (SIGGRANT
, fatal_error_signal
);
1073 signal (SIGRETRACT
, fatal_error_signal
);
1074 signal (SIGSOUND
, fatal_error_signal
);
1075 signal (SIGMSG
, fatal_error_signal
);
1079 noninteractive1
= noninteractive
;
1081 /* Perform basic initializations (not merely interning symbols) */
1088 init_charset_once ();
1089 init_coding_once ();
1090 init_syntax_once (); /* Create standard syntax table. */
1091 init_category_once (); /* Create standard category table. */
1092 /* Must be done before init_buffer */
1093 init_casetab_once ();
1094 init_buffer_once (); /* Create buffer table and some buffers */
1095 init_minibuf_once (); /* Create list of minibuffers */
1096 /* Must precede init_window_once */
1098 /* Call syms_of_xfaces before init_window_once because that
1099 function creates Vterminal_frame. Termcap frames now use
1100 faces, and the face implementation uses some symbols as
1104 init_window_once (); /* Init the window system */
1105 init_fileio_once (); /* Must precede any path manipulation. */
1110 if (do_initial_setlocale
)
1113 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1114 Vsystem_time_locale
= Vprevious_system_time_locale
;
1120 #ifdef CLASH_DETECTION
1124 running_asynch_code
= 0;
1126 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1127 but not while dumping. */
1130 ! noninteractive
|| initialized
1136 int inhibit_unibyte
= 0;
1138 /* --multibyte overrides EMACS_UNIBYTE. */
1139 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1140 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1141 inhibit_unibyte
= 1;
1143 /* --unibyte requests that we set up to do everything with single-byte
1144 buffers and strings. We need to handle this before calling
1145 init_lread, init_editfns and other places that generate Lisp strings
1146 from text in the environment. */
1147 /* Actually this shouldn't be needed as of 20.4 in a generally
1148 unibyte environment. As handa says, environment values
1149 aren't now decoded; also existing buffers are now made
1150 unibyte during startup if .emacs sets unibyte. Tested with
1151 8-bit data in environment variables and /etc/passwd, setting
1152 unibyte and Latin-1 in .emacs. -- Dave Love */
1153 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1154 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1155 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1157 Lisp_Object old_log_max
;
1158 Lisp_Object symbol
, tail
;
1160 symbol
= intern ("default-enable-multibyte-characters");
1161 Fset (symbol
, Qnil
);
1165 /* Erase pre-dump messages in *Messages* now so no abort. */
1166 old_log_max
= Vmessage_log_max
;
1167 XSETFASTINT (Vmessage_log_max
, 0);
1168 message_dolog ("", 0, 1, 0);
1169 Vmessage_log_max
= old_log_max
;
1172 for (tail
= Vbuffer_alist
; CONSP (tail
);
1177 buffer
= Fcdr (XCAR (tail
));
1178 /* Verify that all buffers are empty now, as they
1180 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1182 /* It is safe to do this crudely in an empty buffer. */
1183 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1189 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1192 #ifdef HAVE_X_WINDOWS
1193 /* Stupid kludge to catch command-line display spec. We can't
1194 handle this argument entirely in window system dependent code
1195 because we don't even know which window system dependent code
1196 to run until we've recognized this argument. */
1198 char *displayname
= 0;
1199 int count_before
= skip_args
;
1201 /* Skip any number of -d options, but only use the last one. */
1204 int count_before_this
= skip_args
;
1206 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1208 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1213 count_before
= count_before_this
;
1216 /* If we have the form --display=NAME,
1217 convert it into -d name.
1218 This requires inserting a new element into argv. */
1219 if (displayname
!= 0 && skip_args
- count_before
== 1)
1221 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1224 for (j
= 0; j
< count_before
+ 1; j
++)
1226 new[count_before
+ 1] = "-d";
1227 new[count_before
+ 2] = displayname
;
1228 for (j
= count_before
+ 2; j
<argc
; j
++)
1229 new[j
+ 1] = argv
[j
];
1233 /* Change --display to -d, when its arg is separate. */
1234 else if (displayname
!= 0 && skip_args
> count_before
1235 && argv
[count_before
+ 1][1] == '-')
1236 argv
[count_before
+ 1] = "-d";
1238 /* Don't actually discard this arg. */
1239 skip_args
= count_before
;
1243 /* argmatch must not be used after here,
1244 except when bulding temacs
1245 because the -d argument has not been skipped in skip_args. */
1248 /* Call early 'cause init_environment needs it. */
1250 /* Set defaults for several environment variables. */
1252 init_environment (argc
, argv
, skip_args
);
1258 /* Initialize environment from registry settings. */
1259 init_environment (argv
);
1260 init_ntproc (); /* must precede init_editfns */
1263 /* egetenv is a pretty low-level facility, which may get called in
1264 many circumstances; it seems flimsy to put off initializing it
1265 until calling init_callproc. */
1266 set_process_environment ();
1267 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1268 if this is not done. Do it after set_process_environment so that we
1269 don't pollute Vprocess_environment. */
1270 /* Setting LANG here will defeat the startup locale processing... */
1275 init_buffer (); /* Init default directory of main buffer */
1277 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1278 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1282 /* Erase any pre-dump messages in the message log, to avoid confusion */
1283 Lisp_Object old_log_max
;
1284 old_log_max
= Vmessage_log_max
;
1285 XSETFASTINT (Vmessage_log_max
, 0);
1286 message_dolog ("", 0, 1, 0);
1287 Vmessage_log_max
= old_log_max
;
1290 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1293 /* Intern the names of all standard functions and variables;
1294 define standard keys. */
1298 /* The basic levels of Lisp must come first */
1299 /* And data must come first of all
1300 for the sake of symbols like error-message */
1307 syms_of_floatfns ();
1311 syms_of_bytecode ();
1313 syms_of_casefiddle ();
1315 syms_of_callproc ();
1316 syms_of_category ();
1320 #ifndef NO_DIR_LIBRARY
1322 #endif /* not NO_DIR_LIBRARY */
1328 syms_of_coding (); /* This should be after syms_of_fileio. */
1329 #ifdef CLASH_DETECTION
1330 syms_of_filelock ();
1331 #endif /* CLASH_DETECTION */
1334 syms_of_keyboard ();
1339 syms_of_mocklisp ();
1350 syms_of_textprop ();
1351 syms_of_composite ();
1357 #endif /* WINDOWSNT */
1360 #ifdef HAVE_X_WINDOWS
1367 #endif /* HAVE_X_WINDOWS */
1376 syms_of_w32select ();
1379 #endif /* HAVE_NTGUI */
1389 keys_of_casefiddle ();
1392 keys_of_keyboard ();
1400 if (!noninteractive
)
1403 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1405 init_display (); /* Determine terminal type. init_sys_modes uses results */
1407 init_keyboard (); /* This too must precede init_sys_modes */
1409 init_vmsproc (); /* And this too. */
1411 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1412 #ifdef HAVE_X_WINDOWS
1414 #endif /* HAVE_X_WINDOWS */
1431 /* Handle -l loadup, args passed by Makefile. */
1432 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1433 Vtop_level
= Fcons (intern ("load"),
1434 Fcons (build_string (file
), Qnil
));
1436 /* Unless next switch is -nl, load "loadup.el" first thing. */
1438 Vtop_level
= Fcons (intern ("load"),
1439 Fcons (build_string ("loadup.el"), Qnil
));
1440 #endif /* CANNOT_DUMP */
1447 /* If the execution TZ happens to be the same as the dump TZ,
1448 change it to some other value and then change it back,
1449 to force the underlying implementation to reload the TZ info.
1450 This is needed on implementations that load TZ info from files,
1451 since the TZ file contents may differ between dump and execution. */
1452 char *tz
= getenv ("TZ");
1453 if (tz
&& !strcmp (tz
, dump_tz
))
1463 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1464 FreeBSD. It might work on some other systems too.
1465 Give it a try and tell me if it works on your system. */
1466 #if defined (__FreeBSD__) || defined (__linux)
1470 extern void _mcleanup ();
1472 extern void safe_bcopy ();
1473 extern void dump_opcode_frequencies ();
1476 /* This uses safe_bcopy because that function comes first in the
1477 Emacs executable. It might be better to use something that
1478 gives the start of the text segment, but start_of_text is not
1479 defined on all systems now. */
1480 monstartup (safe_bcopy
, &etext
);
1489 #ifdef LOCALTIME_CACHE
1490 /* Some versions of localtime have a bug. They cache the value of the time
1491 zone rather than looking it up every time. Since localtime() is
1492 called to bolt the undumping time into the undumped emacs, this
1493 results in localtime ignoring the TZ environment variable.
1494 This flushes the new TZ value into localtime. */
1496 #endif /* defined (LOCALTIME_CACHE) */
1498 /* Enter editor command loop. This never returns. */
1503 /* Sort the args so we can find the most important ones
1504 at the beginning of argv. */
1506 /* First, here's a table of all the standard options. */
1508 struct standard_args
1516 struct standard_args standard_args
[] =
1518 { "-version", "--version", 150, 0 },
1520 { "-nl", "--no-shared-memory", 140, 0 },
1523 { "-map", "--map-data", 130, 0 },
1525 { "-t", "--terminal", 120, 1 },
1526 { "-nw", "--no-windows", 110, 0 },
1527 { "-batch", "--batch", 100, 0 },
1528 { "-help", "--help", 90, 0 },
1529 { "-no-unibyte", "--no-unibyte", 83, 0 },
1530 { "-multibyte", "--multibyte", 82, 0 },
1531 { "-unibyte", "--unibyte", 81, 0 },
1532 { "-no-multibyte", "--no-multibyte", 80, 0 },
1534 { "-nl", "--no-loadup", 70, 0 },
1536 /* -d must come last before the options handled in startup.el. */
1537 { "-d", "--display", 60, 1 },
1538 { "-display", 0, 60, 1 },
1539 /* Now for the options handled in startup.el. */
1540 { "-q", "--no-init-file", 50, 0 },
1541 { "-no-init-file", 0, 50, 0 },
1542 { "-no-site-file", "--no-site-file", 40, 0 },
1543 { "-u", "--user", 30, 1 },
1544 { "-user", 0, 30, 1 },
1545 { "-debug-init", "--debug-init", 20, 0 },
1546 { "-i", "--icon-type", 15, 0 },
1547 { "-itype", 0, 15, 0 },
1548 { "-iconic", "--iconic", 15, 0 },
1549 { "-bg", "--background-color", 10, 1 },
1550 { "-background", 0, 10, 1 },
1551 { "-fg", "--foreground-color", 10, 1 },
1552 { "-foreground", 0, 10, 1 },
1553 { "-bd", "--border-color", 10, 1 },
1554 { "-bw", "--border-width", 10, 1 },
1555 { "-ib", "--internal-border", 10, 1 },
1556 { "-ms", "--mouse-color", 10, 1 },
1557 { "-cr", "--cursor-color", 10, 1 },
1558 { "-fn", "--font", 10, 1 },
1559 { "-font", 0, 10, 1 },
1560 { "-g", "--geometry", 10, 1 },
1561 { "-geometry", 0, 10, 1 },
1562 { "-T", "--title", 10, 1 },
1563 { "-title", 0, 10, 1 },
1564 { "-name", "--name", 10, 1 },
1565 { "-xrm", "--xrm", 10, 1 },
1566 { "-r", "--reverse-video", 5, 0 },
1568 { "-reverse", 0, 5, 0 },
1569 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1570 { "-vb", "--vertical-scroll-bars", 5, 0 },
1571 /* These have the same priority as ordinary file name args,
1572 so they are not reordered with respect to those. */
1573 { "-L", "--directory", 0, 1 },
1574 { "-directory", 0, 0, 1 },
1575 { "-l", "--load", 0, 1 },
1576 { "-load", 0, 0, 1 },
1577 { "-f", "--funcall", 0, 1 },
1578 { "-funcall", 0, 0, 1 },
1579 { "-eval", "--eval", 0, 1 },
1580 { "-execute", "--execute", 0, 1 },
1581 { "-find-file", "--find-file", 0, 1 },
1582 { "-visit", "--visit", 0, 1 },
1583 { "-file", "--file", 0, 1 },
1584 { "-insert", "--insert", 0, 1 },
1585 /* This should be processed after ordinary file name args and the like. */
1586 { "-kill", "--kill", -10, 0 },
1589 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1590 so that the highest priority ones come first.
1591 Do not change the order of elements of equal priority.
1592 If an option takes an argument, keep it and its argument together.
1594 If an option that takes no argument appears more
1595 than once, eliminate all but one copy of it. */
1598 sort_args (argc
, argv
)
1602 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1603 /* For each element of argv,
1604 the corresponding element of options is:
1605 0 for an option that takes no arguments,
1606 1 for an option that takes one argument, etc.
1607 -1 for an ordinary non-option argument. */
1608 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1609 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1611 int incoming_used
= 1;
1615 /* Categorize all the options,
1616 and figure out which argv elts are option arguments. */
1617 for (from
= 1; from
< argc
; from
++)
1621 if (argv
[from
][0] == '-')
1626 /* If we have found "--", don't consider
1627 any more arguments as options. */
1628 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1630 /* Leave the "--", and everything following it, at the end. */
1631 for (; from
< argc
; from
++)
1633 priority
[from
] = -100;
1639 /* Look for a match with a known old-fashioned option. */
1640 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1641 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1643 options
[from
] = standard_args
[i
].nargs
;
1644 priority
[from
] = standard_args
[i
].priority
;
1645 if (from
+ standard_args
[i
].nargs
>= argc
)
1646 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1647 from
+= standard_args
[i
].nargs
;
1651 /* Look for a match with a known long option.
1652 MATCH is -1 if no match so far, -2 if two or more matches so far,
1653 >= 0 (the table index of the match) if just one match so far. */
1654 if (argv
[from
][1] == '-')
1657 thislen
= strlen (argv
[from
]);
1658 equals
= index (argv
[from
], '=');
1660 thislen
= equals
- argv
[from
];
1663 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1664 if (standard_args
[i
].longname
1665 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1674 /* If we found exactly one match, use that. */
1677 options
[from
] = standard_args
[match
].nargs
;
1678 priority
[from
] = standard_args
[match
].priority
;
1679 /* If --OPTION=VALUE syntax is used,
1680 this option uses just one argv element. */
1683 if (from
+ options
[from
] >= argc
)
1684 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1685 from
+= options
[from
];
1692 /* Copy the arguments, in order of decreasing priority, to NEW. */
1694 while (incoming_used
< argc
)
1697 int best_priority
= -9999;
1699 /* Find the highest priority remaining option.
1700 If several have equal priority, take the first of them. */
1701 for (from
= 1; from
< argc
; from
++)
1703 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1705 best_priority
= priority
[from
];
1708 /* Skip option arguments--they are tied to the options. */
1709 if (options
[from
] > 0)
1710 from
+= options
[from
];
1716 /* Copy the highest priority remaining option, with its args, to NEW.
1717 Unless it is a duplicate of the previous one. */
1718 if (! (options
[best
] == 0
1719 && ! strcmp (new[to
- 1], argv
[best
])))
1721 new[to
++] = argv
[best
];
1722 for (i
= 0; i
< options
[best
]; i
++)
1723 new[to
++] = argv
[best
+ i
+ 1];
1726 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1728 /* Clear out this option in ARGV. */
1730 for (i
= 0; i
< options
[best
]; i
++)
1731 argv
[best
+ i
+ 1] = 0;
1734 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1738 bcopy (new, argv
, sizeof (char *) * argc
);
1745 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1746 "Exit the Emacs job and kill it.\n\
1747 If ARG is an integer, return ARG as the exit program code.\n\
1748 If ARG is a string, stuff it as keyboard input.\n\n\
1749 The value of `kill-emacs-hook', if not void,\n\
1750 is a list of functions (of no args),\n\
1751 all of which are called before Emacs is actually killed.")
1755 struct gcpro gcpro1
;
1762 if (!NILP (Vrun_hooks
) && !noninteractive
)
1763 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1767 /* Is it really necessary to do this deassign
1768 when we are going to exit anyway? */
1773 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1775 /* If we have an auto-save list file,
1776 kill it because we are exiting Emacs deliberately (not crashing).
1777 Do it after shut_down_emacs, which does an auto-save. */
1778 if (STRINGP (Vauto_save_list_file_name
))
1779 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1781 exit (INTEGERP (arg
) ? XINT (arg
)
1792 /* Perform an orderly shutdown of Emacs. Autosave any modified
1793 buffers, kill any child processes, clean up the terminal modes (if
1794 we're in the foreground), and other stuff like that. Don't perform
1795 any redisplay; this may be called when Emacs is shutting down in
1796 the background, or after its X connection has died.
1798 If SIG is a signal number, print a message for it.
1800 This is called by fatal signal handlers, X protocol error handlers,
1804 shut_down_emacs (sig
, no_x
, stuff
)
1808 /* Prevent running of hooks from now on. */
1811 /* If we are controlling the terminal, reset terminal modes */
1812 #ifdef EMACS_HAVE_TTY_PGRP
1814 int pgrp
= EMACS_GETPGRP (0);
1817 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1822 if (sig
&& sig
!= SIGTERM
)
1823 fprintf (stderr
, "Fatal error (%d).", sig
);
1831 stuff_buffered_input (stuff
);
1833 kill_buffer_processes (Qnil
);
1834 Fdo_auto_save (Qt
, Qnil
);
1836 #ifdef CLASH_DETECTION
1837 unlock_all_files ();
1841 kill_vms_processes ();
1844 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1845 #ifdef HAVE_X_WINDOWS
1846 /* It's not safe to call intern here. Maybe we are crashing. */
1847 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1848 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1849 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1851 Fx_close_current_connection ();
1852 #endif /* HAVE_X_WINDOWS */
1856 /* There is a tendency for a SIGIO signal to arrive within exit,
1857 and cause a SIGHUP because the input descriptor is already closed. */
1859 signal (SIGIO
, SIG_IGN
);
1866 check_glyph_memory ();
1867 check_message_stack ();
1880 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1881 "Dump current state of Emacs into data file FILENAME.\n\
1882 This function exists on systems that use HAVE_SHM.")
1884 Lisp_Object filename
;
1886 extern char my_edata
[];
1889 CHECK_STRING (filename
, 0);
1890 filename
= Fexpand_file_name (filename
, Qnil
);
1893 Vpurify_flag
= Qnil
;
1896 /* Tell malloc where start of impure now is */
1897 /* Also arrange for warnings when nearly out of space. */
1898 #ifndef SYSTEM_MALLOC
1899 memory_warnings (my_edata
, malloc_warning
);
1901 map_out_data (XSTRING (filename
)->data
);
1908 #else /* not HAVE_SHM */
1910 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1911 "Dump current state of Emacs into executable file FILENAME.\n\
1912 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1913 This is used in the file `loadup.el' when building Emacs.\n\
1915 You must run Emacs in batch mode in order to dump it.")
1917 Lisp_Object filename
, symfile
;
1919 extern char my_edata
[];
1922 int count
= specpdl_ptr
- specpdl
;
1924 if (! noninteractive
)
1925 error ("Dumping Emacs works only in batch mode");
1927 /* Bind `command-line-processed' to nil before dumping,
1928 so that the dumped Emacs will process its command line
1929 and set up to work with X windows if appropriate. */
1930 symbol
= intern ("command-line-process");
1931 specbind (symbol
, Qnil
);
1933 CHECK_STRING (filename
, 0);
1934 filename
= Fexpand_file_name (filename
, Qnil
);
1935 if (!NILP (symfile
))
1937 CHECK_STRING (symfile
, 0);
1938 if (XSTRING (symfile
)->size
)
1939 symfile
= Fexpand_file_name (symfile
, Qnil
);
1943 Vpurify_flag
= Qnil
;
1946 set_time_zone_rule (dump_tz
);
1947 #ifndef LOCALTIME_CACHE
1948 /* Force a tz reload, since set_time_zone_rule doesn't. */
1955 mapout_data (XSTRING (filename
)->data
);
1957 /* Tell malloc where start of impure now is */
1958 /* Also arrange for warnings when nearly out of space. */
1959 #ifndef SYSTEM_MALLOC
1961 /* On Windows, this was done before dumping, and that once suffices.
1962 Meanwhile, my_edata is not valid on Windows. */
1963 memory_warnings (my_edata
, malloc_warning
);
1964 #endif /* not WINDOWSNT */
1966 #ifdef DOUG_LEA_MALLOC
1967 malloc_state_ptr
= malloc_get_state ();
1969 unexec (XSTRING (filename
)->data
,
1970 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1971 #ifdef DOUG_LEA_MALLOC
1972 free (malloc_state_ptr
);
1974 #endif /* not VMS */
1978 return unbind_to (count
, Qnil
);
1981 #endif /* not HAVE_SHM */
1983 #endif /* not CANNOT_DUMP */
1986 /* Recover from setlocale (LC_ALL, ""). */
1990 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
1991 so that numbers are read and printed properly for Emacs Lisp. */
1992 setlocale (LC_NUMERIC
, "C");
1995 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
1998 synchronize_locale (category
, plocale
, desired_locale
)
2000 Lisp_Object
*plocale
;
2001 Lisp_Object desired_locale
;
2003 if (! EQ (*plocale
, desired_locale
))
2005 *plocale
= desired_locale
;
2006 setlocale (category
, (STRINGP (desired_locale
)
2007 ? (char *)(XSTRING (desired_locale
)->data
)
2012 /* Set system time locale to match Vsystem_time_locale, if possible. */
2014 synchronize_system_time_locale ()
2016 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2017 Vsystem_time_locale
);
2020 /* Set system messages locale to match Vsystem_messages_locale, if
2023 synchronize_system_messages_locale ()
2026 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2027 Vsystem_messages_locale
);
2030 #endif /* HAVE_SETLOCALE */
2037 decode_env_path (evarname
, defalt
)
2038 char *evarname
, *defalt
;
2040 register char *path
, *p
;
2041 Lisp_Object lpath
, element
, tem
;
2043 /* It's okay to use getenv here, because this function is only used
2044 to initialize variables when Emacs starts up, and isn't called
2047 path
= (char *) getenv (evarname
);
2053 /* Ensure values from the environment use the proper directory separator. */
2056 p
= alloca (strlen (path
) + 1);
2060 if ('/' == DIRECTORY_SEP
)
2061 dostounix_filename (path
);
2063 unixtodos_filename (path
);
2069 p
= index (path
, SEPCHAR
);
2070 if (!p
) p
= path
+ strlen (path
);
2071 element
= (p
- path
? make_string (path
, p
- path
)
2072 : build_string ("."));
2074 /* Add /: to the front of the name
2075 if it would otherwise be treated as magic. */
2076 tem
= Ffind_file_name_handler (element
, Qt
);
2078 element
= concat2 (build_string ("/:"), element
);
2080 lpath
= Fcons (element
, lpath
);
2086 return Fnreverse (lpath
);
2092 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2093 staticpro (&Qfile_name_handler_alist
);
2097 defsubr (&Sdump_emacs_data
);
2099 defsubr (&Sdump_emacs
);
2103 defsubr (&Skill_emacs
);
2105 defsubr (&Sinvocation_name
);
2106 defsubr (&Sinvocation_directory
);
2108 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2109 "Args passed by shell to Emacs, as a list of strings.");
2111 DEFVAR_LISP ("system-type", &Vsystem_type
,
2112 "Value is symbol indicating type of operating system you are using.");
2113 Vsystem_type
= intern (SYSTEM_TYPE
);
2115 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2116 "Value is string indicating configuration Emacs was built for.");
2117 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2119 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2120 "String containing the configuration options Emacs was built with.");
2121 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2123 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2124 "Non-nil means Emacs is running without interactive terminal.");
2126 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2127 "Hook to be run whenever kill-emacs is called.\n\
2128 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
2129 in other similar situations), functions placed on this hook should not\n\
2130 expect to be able to interact with the user. To ask for confirmation,\n\
2131 see `kill-emacs-query-functions' instead.");
2132 Vkill_emacs_hook
= Qnil
;
2135 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2136 "Hook to be run whenever emacs receives a USR1 signal");
2137 Vsignal_USR1_hook
= Qnil
;
2139 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2140 "Hook to be run whenever emacs receives a USR2 signal");
2141 Vsignal_USR2_hook
= Qnil
;
2146 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2147 "Priority for Emacs to run at.\n\
2148 This value is effective only if set before Emacs is dumped,\n\
2149 and only if the Emacs executable is installed with setuid to permit\n\
2150 it to change priority. (Emacs sets its uid back to the real uid.)\n\
2151 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
2152 before you compile Emacs, to enable the code for this feature.");
2155 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2156 "The directory separator in search paths, as a string.");
2159 Vpath_separator
= make_string (&c
, 1);
2162 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2163 "The program name that was used to run Emacs.\n\
2164 Any directory names are omitted.");
2166 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2167 "The directory in which the Emacs executable was found, to run it.\n\
2168 The value is nil if that directory's name is not known.");
2170 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2171 "A directory within which to look for the `lib-src' and `etc' directories.\n\
2172 This is non-nil when we can't find those directories in their standard\n\
2173 installed locations, but we can find them\n\
2174 near where the Emacs executable was found.");
2175 Vinstallation_directory
= Qnil
;
2177 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2178 "System locale for messages.");
2179 Vsystem_messages_locale
= Qnil
;
2181 DEFVAR_LISP ("previous-system-messages-locale",
2182 &Vprevious_system_messages_locale
,
2183 "Most recently used system locale for messages.");
2184 Vprevious_system_messages_locale
= Qnil
;
2186 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2187 "System locale for time.");
2188 Vsystem_time_locale
= Qnil
;
2190 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2191 "Most recently used system locale for time.");
2192 Vprevious_system_time_locale
= Qnil
;