1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
27 #include <sys/types.h>
39 #include <sys/ioctl.h>
44 #include "intervals.h"
48 #include "blockinput.h"
49 #include "syssignal.h"
51 #include "termhooks.h"
60 #include <sys/resource.h>
67 extern void malloc_warning ();
68 extern void set_time_zone_rule ();
69 extern char *index ();
70 extern char *strerror ();
72 /* Command line args from shell, as list of strings */
73 Lisp_Object Vcommand_line_args
;
75 /* The name under which Emacs was invoked, with any leading directory
77 Lisp_Object Vinvocation_name
;
79 /* The directory name from which Emacs was invoked. */
80 Lisp_Object Vinvocation_directory
;
82 /* The directory name in which to find subdirs such as lisp and etc.
83 nil means get them only from PATH_LOADSEARCH. */
84 Lisp_Object Vinstallation_directory
;
86 /* Hook run by `kill-emacs' before it does really anything. */
87 Lisp_Object Vkill_emacs_hook
;
90 /* Hooks for signal USR1 and USR2 handing */
91 Lisp_Object Vsignal_USR1_hook
;
93 Lisp_Object Vsignal_USR2_hook
;
97 /* Search path separator. */
98 Lisp_Object Vpath_separator
;
100 /* Set nonzero after Emacs has started up the first time.
101 Prevents reinitialization of the Lisp world and keymaps
102 on subsequent starts. */
105 #ifdef DOUG_LEA_MALLOC
106 /* Preserves a pointer to the memory allocated that copies that
107 static data inside glibc's malloc. */
108 void *malloc_state_ptr
;
109 /* From glibc, a routine that returns a copy of the malloc internal state. */
110 extern void *malloc_get_state ();
111 /* From glibc, a routine that overwrites the malloc internal state. */
112 extern void malloc_set_state ();
113 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
114 dumping. Used to work around a bug in glibc's malloc. */
115 int malloc_using_checking
;
118 /* Variable whose value is symbol giving operating system type. */
119 Lisp_Object Vsystem_type
;
121 /* Variable whose value is string giving configuration built for. */
122 Lisp_Object Vsystem_configuration
;
124 /* Variable whose value is string giving configuration options,
125 for use when reporting bugs. */
126 Lisp_Object Vsystem_configuration_options
;
128 Lisp_Object Qfile_name_handler_alist
;
130 /* Current and previous system locales for messages and time. */
131 Lisp_Object Vmessages_locale
;
132 Lisp_Object Vprevious_messages_locale
;
133 Lisp_Object Vtime_locale
;
134 Lisp_Object Vprevious_time_locale
;
136 /* If non-zero, emacs should not attempt to use an window-specific code,
137 but instead should use the virtual terminal under which it was started */
138 int inhibit_window_system
;
140 /* If nonzero, set Emacs to run at this priority. This is also used
141 in child_setup and sys_suspend to make sure subshells run at normal
142 priority; Those functions have their own extern declaration. */
145 /* If non-zero a filter or a sentinel is running. Tested to save the match
146 data on the first attempt to change it inside asynchronous code. */
147 int running_asynch_code
;
151 extern int inherited_pgroup
;
154 #ifdef HAVE_X_WINDOWS
155 /* If non-zero, -d was specified, meaning we're using some window system. */
159 /* An address near the bottom of the stack.
160 Tells GC how to save a copy of the stack. */
163 #ifdef HAVE_WINDOW_SYSTEM
164 extern Lisp_Object Vwindow_system
;
165 #endif /* HAVE_WINDOW_SYSTEM */
167 extern Lisp_Object Vauto_save_list_file_name
;
169 #ifdef USG_SHARED_LIBRARIES
170 /* If nonzero, this is the place to put the end of the writable segment
173 unsigned int bss_end
= 0;
176 /* Nonzero means running Emacs without interactive terminal. */
180 /* Value of Lisp variable `noninteractive'.
181 Normally same as C variable `noninteractive'
182 but nothing terrible happens if user sets this one. */
186 /* Save argv and argc. */
190 static void sort_args ();
191 void syms_of_emacs ();
193 /* Signal code for the fatal signal that was received */
194 int fatal_error_code
;
196 /* Nonzero if handling a fatal error already */
197 int fatal_error_in_progress
;
201 handle_USR1_signal (sig
)
204 struct input_event buf
;
206 buf
.kind
= user_signal
;
208 buf
.frame_or_window
= selected_frame
;
212 kbd_buffer_store_event (&buf
);
218 handle_USR2_signal (sig
)
221 struct input_event buf
;
223 buf
.kind
= user_signal
;
225 buf
.frame_or_window
= selected_frame
;
229 kbd_buffer_store_event (&buf
);
233 /* Handle bus errors, illegal instruction, etc. */
235 fatal_error_signal (sig
)
238 fatal_error_code
= sig
;
239 signal (sig
, SIG_DFL
);
241 TOTALLY_UNBLOCK_INPUT
;
243 /* If fatal error occurs in code below, avoid infinite recursion. */
244 if (! fatal_error_in_progress
)
246 fatal_error_in_progress
= 1;
248 shut_down_emacs (sig
, 0, Qnil
);
252 LIB$
STOP (SS$_ABORT
);
254 /* Signal the same code; this time it will really be fatal.
255 Remember that since we're in a signal handler, the signal we're
256 going to send is probably blocked, so we have to unblock it if we
257 want to really receive it. */
259 sigunblock (sigmask (fatal_error_code
));
261 kill (getpid (), fatal_error_code
);
267 /* Handler for SIGDANGER. */
269 memory_warning_signal (sig
)
272 signal (sig
, memory_warning_signal
);
274 malloc_warning ("Operating system warns that virtual memory is running low.\n");
276 /* It might be unsafe to call do_auto_save now. */
277 force_auto_save_soon ();
281 /* We define abort, rather than using it from the library,
282 so that GDB can return from a breakpoint here.
283 MSDOS has its own definition on msdos.c */
285 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
289 kill (getpid (), SIGABRT
);
290 /* This shouldn't be executed, but it prevents a warning. */
296 /* Code for dealing with Lisp access to the Unix command line */
299 init_cmdargs (argc
, argv
, skip_args
)
305 Lisp_Object name
, dir
, tem
;
306 int count
= specpdl_ptr
- specpdl
;
307 Lisp_Object raw_name
;
312 raw_name
= build_string (argv
[0]);
314 /* Add /: to the front of the name
315 if it would otherwise be treated as magic. */
316 tem
= Ffind_file_name_handler (raw_name
, Qt
);
318 raw_name
= concat2 (build_string ("/:"), raw_name
);
320 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
321 Vinvocation_directory
= Ffile_name_directory (raw_name
);
323 /* If we got no directory in argv[0], search PATH to find where
324 Emacs actually came from. */
325 if (NILP (Vinvocation_directory
))
328 int yes
= openp (Vexec_path
, Vinvocation_name
,
329 EXEC_SUFFIXES
, &found
, 1);
332 /* Add /: to the front of the name
333 if it would otherwise be treated as magic. */
334 tem
= Ffind_file_name_handler (found
, Qt
);
336 found
= concat2 (build_string ("/:"), found
);
337 Vinvocation_directory
= Ffile_name_directory (found
);
341 if (!NILP (Vinvocation_directory
)
342 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
343 /* Emacs was started with relative path, like ./emacs.
345 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
347 Vinstallation_directory
= Qnil
;
349 if (!NILP (Vinvocation_directory
))
351 dir
= Vinvocation_directory
;
352 name
= Fexpand_file_name (Vinvocation_name
, dir
);
355 Lisp_Object tem
, lib_src_exists
;
356 Lisp_Object etc_exists
, info_exists
;
358 /* See if dir contains subdirs for use by Emacs.
359 Check for the ones that would exist in a build directory,
360 not including lisp and info. */
361 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
362 lib_src_exists
= Ffile_exists_p (tem
);
365 /* MSDOS installations frequently remove lib-src, but we still
366 must set installation-directory, or else info won't find
367 its files (it uses the value of installation-directory). */
368 tem
= Fexpand_file_name (build_string ("info"), dir
);
369 info_exists
= Ffile_exists_p (tem
);
374 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
376 tem
= Fexpand_file_name (build_string ("etc"), dir
);
377 etc_exists
= Ffile_exists_p (tem
);
378 if (!NILP (etc_exists
))
380 Vinstallation_directory
381 = Ffile_name_as_directory (dir
);
386 /* See if dir's parent contains those subdirs. */
387 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
388 lib_src_exists
= Ffile_exists_p (tem
);
392 /* See the MSDOS commentary above. */
393 tem
= Fexpand_file_name (build_string ("../info"), dir
);
394 info_exists
= Ffile_exists_p (tem
);
399 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
401 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
402 etc_exists
= Ffile_exists_p (tem
);
403 if (!NILP (etc_exists
))
405 tem
= Fexpand_file_name (build_string (".."), dir
);
406 Vinstallation_directory
407 = Ffile_name_as_directory (tem
);
412 /* If the Emacs executable is actually a link,
413 next try the dir that the link points into. */
414 tem
= Ffile_symlink_p (name
);
417 name
= Fexpand_file_name (tem
, dir
);
418 dir
= Ffile_name_directory (name
);
425 Vcommand_line_args
= Qnil
;
427 for (i
= argc
- 1; i
>= 0; i
--)
429 if (i
== 0 || i
> skip_args
)
431 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
434 unbind_to (count
, Qnil
);
437 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
438 "Return the program name that was used to run Emacs.\n\
439 Any directory names are omitted.")
442 return Fcopy_sequence (Vinvocation_name
);
445 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
447 "Return the directory name in which the Emacs executable was located")
450 return Fcopy_sequence (Vinvocation_directory
);
455 #ifdef LINK_CRTL_SHARE
456 #ifdef SHARABLE_LIB_BUG
457 extern noshare
char **environ
;
458 #endif /* SHARABLE_LIB_BUG */
459 #endif /* LINK_CRTL_SHARE */
463 /* A valid but unlikely value for the TZ environment value.
464 It is OK (though a bit slower) if the user actually chooses this value. */
465 static char dump_tz
[] = "UtC0";
468 #ifndef ORDINARY_LINK
469 /* We don't include crtbegin.o and crtend.o in the link,
470 so these functions and variables might be missed.
471 Provide dummy definitions to avoid error.
472 (We don't have any real constructors or destructors.) */
474 #ifndef GCC_CTORS_IN_LIBC
475 void __do_global_ctors ()
477 void __do_global_ctors_aux ()
479 void __do_global_dtors ()
481 /* Linux has a bug in its library; avoid an error. */
483 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
485 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
486 #endif /* GCC_CTORS_IN_LIBC */
489 #endif /* __GNUC__ */
490 #endif /* ORDINARY_LINK */
492 /* Test whether the next argument in ARGV matches SSTR or a prefix of
493 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
494 (the argument is supposed to have a value) store in *VALPTR either
495 the next argument or the portion of this one after the equal sign.
496 ARGV is read starting at position *SKIPPTR; this index is advanced
497 by the number of arguments used.
499 Too bad we can't just use getopt for all of this, but we don't have
500 enough information to do it right. */
503 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
516 /* Don't access argv[argc]; give up in advance. */
517 if (argc
<= *skipptr
+ 1)
520 arg
= argv
[*skipptr
+1];
523 if (strcmp (arg
, sstr
) == 0)
527 *valptr
= argv
[*skipptr
+2];
534 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
535 ? p
- arg
: strlen (arg
));
536 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
538 else if (valptr
== NULL
)
549 else if (argv
[*skipptr
+2] != NULL
)
551 *valptr
= argv
[*skipptr
+2];
561 #ifdef DOUG_LEA_MALLOC
563 /* malloc can be invoked even before main (e.g. by the dynamic
564 linker), so the dumped malloc state must be restored as early as
565 possible using this special hook. */
568 malloc_initialize_hook ()
570 extern char **environ
;
574 if (!malloc_using_checking
)
575 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
576 ignored if the heap to be restored was constructed without
577 malloc checking. Can't use unsetenv, since that calls malloc. */
581 for (p
= environ
; *p
; p
++)
582 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
591 malloc_set_state (malloc_state_ptr
);
592 free (malloc_state_ptr
);
595 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
598 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
600 #endif /* DOUG_LEA_MALLOC */
604 main (argc
, argv
, envp
)
609 char stack_bottom_variable
;
610 int do_initial_setlocale
;
614 #ifdef HAVE_SETRLIMIT
619 #ifdef LINUX_SBRK_BUG
623 #ifdef RUN_TIME_REMAP
625 run_time_remap (argv
[0]);
628 sort_args (argc
, argv
);
630 while (argv
[argc
]) argc
++;
632 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
633 /* We don't know the version number unless this is a dumped Emacs.
634 So ignore --version otherwise. */
638 tem
= Fsymbol_value (intern ("emacs-version"));
641 fprintf (stderr
, "Invalid value of `emacs-version'\n");
646 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
647 printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
648 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
649 printf ("You may redistribute copies of Emacs\n");
650 printf ("under the terms of the GNU General Public License.\n");
651 printf ("For more information about these matters, ");
652 printf ("see the file named COPYING.\n");
657 /* Map in shared memory, if we are using that. */
659 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
662 /* The shared memory was just restored, which clobbered this. */
668 /* The shared memory was just restored, which clobbered this. */
675 extern int malloc_cookie
;
676 /* This helps out unexnext.c. */
678 if (malloc_jumpstart (malloc_cookie
) != 0)
679 printf ("malloc jumpstart failed!\n");
684 /* If -map specified, map the data file in */
687 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
691 #ifdef LINK_CRTL_SHARE
692 #ifdef SHARABLE_LIB_BUG
693 /* Bletcherous shared libraries! */
695 stdin
= fdopen (0, "r");
697 stdout
= fdopen (1, "w");
699 stderr
= fdopen (2, "w");
702 #endif /* SHARABLE_LIB_BUG */
703 #endif /* LINK_CRTL_SHARE */
706 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
707 /* Extend the stack space available.
708 Don't do that if dumping, since some systems (e.g. DJGPP)
709 might define a smaller stack limit at that time. */
712 && (!noninteractive
|| initialized
)
714 && !getrlimit (RLIMIT_STACK
, &rlim
))
717 extern int re_max_failures
;
718 /* Approximate the amount regex.c needs per unit of re_max_failures. */
719 int ratio
= 20 * sizeof (char *);
720 /* Then add 33% to cover the size of the smaller stacks that regex.c
721 successively allocates and discards, on its way to the maximum. */
723 /* Add in some extra to cover
724 what we're likely to use for other reasons. */
725 newlim
= re_max_failures
* ratio
+ 200000;
727 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
728 stack allocation routine for new process that the allocation
729 fails if stack limit is not on page boundary. So, round up the
730 new limit to page boundary. */
731 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
733 if (newlim
> rlim
.rlim_max
)
735 newlim
= rlim
.rlim_max
;
736 /* Don't let regex.c overflow the stack we have. */
737 re_max_failures
= (newlim
- 200000) / ratio
;
739 if (rlim
.rlim_cur
< newlim
)
740 rlim
.rlim_cur
= newlim
;
742 setrlimit (RLIMIT_STACK
, &rlim
);
744 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
746 /* Record (approximately) where the stack begins. */
747 stack_bottom
= &stack_bottom_variable
;
749 #ifdef USG_SHARED_LIBRARIES
751 brk ((void *)bss_end
);
756 #ifndef SYSTEM_MALLOC
757 /* Arrange to get warning messages as memory fills up. */
758 memory_warnings (0, malloc_warning
);
760 /* Call malloc at least once, to run the initial __malloc_hook.
761 Also call realloc and free for consistency. */
762 free (realloc (malloc (4), 4));
764 /* Arrange to disable interrupt input inside malloc etc. */
765 uninterrupt_malloc ();
766 #endif /* not SYSTEM_MALLOC */
769 /* We do all file input/output as binary files. When we need to translate
770 newlines, we do that manually. */
774 if (!isatty (fileno (stdin
)))
775 setmode (fileno (stdin
), O_BINARY
);
776 if (!isatty (fileno (stdout
)))
779 setmode (fileno (stdout
), O_BINARY
);
781 #else /* not __DJGPP__ >= 2 */
782 (stdin
)->_flag
&= ~_IOTEXT
;
783 (stdout
)->_flag
&= ~_IOTEXT
;
784 (stderr
)->_flag
&= ~_IOTEXT
;
785 #endif /* not __DJGPP__ >= 2 */
788 #ifdef SET_EMACS_PRIORITY
790 nice (emacs_priority
);
792 #endif /* SET_EMACS_PRIORITY */
794 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
795 The build procedure uses this while dumping, to ensure that the
796 dumped Emacs does not have its system locale tables initialized,
797 as that might cause screwups when the dumped Emacs starts up. */
799 char *lc_all
= getenv ("LC_ALL");
800 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
803 /* Set locale now, so that initial error messages are localized properly.
804 fixup_locale must wait until later, since it builds strings. */
805 if (do_initial_setlocale
)
806 setlocale (LC_ALL
, "");
808 #ifdef EXTRA_INITIALIZE
812 inhibit_window_system
= 0;
814 /* Handle the -t switch, which specifies filename to use as terminal */
818 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
823 result
= emacs_open (term
, O_RDWR
, 0);
826 char *errstring
= strerror (errno
);
827 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
833 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
836 fprintf (stderr
, "Using %s\n", term
);
837 #ifdef HAVE_WINDOW_SYSTEM
838 inhibit_window_system
= 1; /* -t => -nw */
845 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
846 inhibit_window_system
= 1;
848 /* Handle the -batch switch, which means don't do interactive display. */
850 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
853 /* Handle the --help option, which gives a usage message.. */
854 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
857 Usage: %s [--batch] [-t term] [--terminal term]\n\
858 [-d display] [--display display] [-nw] [--no-windows]\n\
859 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
860 [--unibyte] [--multibyte] [--version] [--no-site-file]\n\
861 [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\
862 [--insert file] [+linenum] file-to-visit [--kill]\n\
863 Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\
864 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
868 if (! noninteractive
)
873 inherited_pgroup
= EMACS_GETPGRP (0);
874 setpgrp (0, getpid ());
877 #if defined (USG5) && defined (INTERRUPT_INPUT)
887 /* Don't catch SIGHUP if dumping. */
894 sigblock (sigmask (SIGHUP
));
895 /* In --batch mode, don't catch SIGHUP if already ignored.
896 That makes nohup work. */
898 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
899 signal (SIGHUP
, fatal_error_signal
);
900 sigunblock (sigmask (SIGHUP
));
905 ! noninteractive
|| initialized
911 /* Don't catch these signals in batch mode if dumping.
912 On some machines, this sets static data that would make
913 signal fail to work right when the dumped Emacs is run. */
914 signal (SIGQUIT
, fatal_error_signal
);
915 signal (SIGILL
, fatal_error_signal
);
916 signal (SIGTRAP
, fatal_error_signal
);
918 signal (SIGUSR1
, handle_USR1_signal
);
920 signal (SIGUSR2
, handle_USR2_signal
);
924 signal (SIGABRT
, fatal_error_signal
);
927 signal (SIGHWE
, fatal_error_signal
);
930 signal (SIGPRE
, fatal_error_signal
);
933 signal (SIGORE
, fatal_error_signal
);
936 signal (SIGUME
, fatal_error_signal
);
939 signal (SIGDLK
, fatal_error_signal
);
942 signal (SIGCPULIM
, fatal_error_signal
);
945 /* This is missing on some systems - OS/2, for example. */
946 signal (SIGIOT
, fatal_error_signal
);
949 signal (SIGEMT
, fatal_error_signal
);
951 signal (SIGFPE
, fatal_error_signal
);
953 signal (SIGBUS
, fatal_error_signal
);
955 signal (SIGSEGV
, fatal_error_signal
);
957 signal (SIGSYS
, fatal_error_signal
);
959 signal (SIGTERM
, fatal_error_signal
);
961 signal (SIGXCPU
, fatal_error_signal
);
964 signal (SIGXFSZ
, fatal_error_signal
);
968 /* This just means available memory is getting low. */
969 signal (SIGDANGER
, memory_warning_signal
);
973 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
974 signal (SIGXCPU
, fatal_error_signal
);
976 signal (SIGIOINT
, fatal_error_signal
);
978 signal (SIGGRANT
, fatal_error_signal
);
979 signal (SIGRETRACT
, fatal_error_signal
);
980 signal (SIGSOUND
, fatal_error_signal
);
981 signal (SIGMSG
, fatal_error_signal
);
985 noninteractive1
= noninteractive
;
987 /* Perform basic initializations (not merely interning symbols) */
994 init_charset_once ();
996 init_syntax_once (); /* Create standard syntax table. */
997 init_category_once (); /* Create standard category table. */
998 /* Must be done before init_buffer */
999 init_casetab_once ();
1000 init_buffer_once (); /* Create buffer table and some buffers */
1001 init_minibuf_once (); /* Create list of minibuffers */
1002 /* Must precede init_window_once */
1004 /* Call syms_of_xfaces before init_window_once because that
1005 function creates Vterminal_frame. Termcap frames now use
1006 faces, and the face implementation uses some symbols as
1012 init_window_once (); /* Init the window system */
1013 init_fileio_once (); /* Must precede any path manipulation. */
1018 if (do_initial_setlocale
)
1021 Vmessages_locale
= Vprevious_messages_locale
;
1022 Vtime_locale
= Vprevious_time_locale
;
1028 #ifdef CLASH_DETECTION
1031 running_asynch_code
= 0;
1033 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1034 but not while dumping. */
1037 ! noninteractive
|| initialized
1043 int inhibit_unibyte
= 0;
1045 /* --multibyte overrides EMACS_UNIBYTE. */
1046 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1047 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
))
1048 inhibit_unibyte
= 1;
1050 /* --unibyte requests that we set up to do everything with single-byte
1051 buffers and strings. We need to handle this before calling
1052 init_lread, init_editfns and other places that generate Lisp strings
1053 from text in the environment. */
1054 /* Actually this shouldn't be needed as of 20.4 in a generally
1055 unibyte environment. As handa says, environment values
1056 aren't now decoded; also existing buffers are now made
1057 unibyte during startup if .emacs sets unibyte. Tested with
1058 8-bit data in environment variables and /etc/passwd, setting
1059 unibyte and Latin-1 in .emacs. -- Dave Love */
1060 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1061 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1062 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1064 Lisp_Object old_log_max
;
1065 Lisp_Object symbol
, tail
;
1067 symbol
= intern ("default-enable-multibyte-characters");
1068 Fset (symbol
, Qnil
);
1072 /* Erase pre-dump messages in *Messages* now so no abort. */
1073 old_log_max
= Vmessage_log_max
;
1074 XSETFASTINT (Vmessage_log_max
, 0);
1075 message_dolog ("", 0, 1, 0);
1076 Vmessage_log_max
= old_log_max
;
1079 for (tail
= Vbuffer_alist
; CONSP (tail
);
1080 tail
= XCONS (tail
)->cdr
)
1084 buffer
= Fcdr (XCONS (tail
)->car
);
1085 /* Verify that all buffers are empty now, as they
1087 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1089 /* It is safe to do this crudely in an empty buffer. */
1090 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1096 = !argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1099 #ifdef HAVE_X_WINDOWS
1100 /* Stupid kludge to catch command-line display spec. We can't
1101 handle this argument entirely in window system dependent code
1102 because we don't even know which window system dependent code
1103 to run until we've recognized this argument. */
1105 char *displayname
= 0;
1106 int count_before
= skip_args
;
1108 /* Skip any number of -d options, but only use the last one. */
1111 int count_before_this
= skip_args
;
1113 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1115 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1120 count_before
= count_before_this
;
1123 /* If we have the form --display=NAME,
1124 convert it into -d name.
1125 This requires inserting a new element into argv. */
1126 if (displayname
!= 0 && skip_args
- count_before
== 1)
1128 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1131 for (j
= 0; j
< count_before
+ 1; j
++)
1133 new[count_before
+ 1] = "-d";
1134 new[count_before
+ 2] = displayname
;
1135 for (j
= count_before
+ 2; j
<argc
; j
++)
1136 new[j
+ 1] = argv
[j
];
1140 /* Change --display to -d, when its arg is separate. */
1141 else if (displayname
!= 0 && skip_args
> count_before
1142 && argv
[count_before
+ 1][1] == '-')
1143 argv
[count_before
+ 1] = "-d";
1145 /* Don't actually discard this arg. */
1146 skip_args
= count_before
;
1150 /* argmatch must not be used after here,
1151 except when bulding temacs
1152 because the -d argument has not been skipped in skip_args. */
1155 /* Call early 'cause init_environment needs it. */
1157 /* Set defaults for several environment variables. */
1159 init_environment (argc
, argv
, skip_args
);
1165 /* Initialize environment from registry settings. */
1166 init_environment (argv
);
1167 init_ntproc (); /* must precede init_editfns */
1170 /* egetenv is a pretty low-level facility, which may get called in
1171 many circumstances; it seems flimsy to put off initializing it
1172 until calling init_callproc. */
1173 set_process_environment ();
1174 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1175 if this is not done. Do it after set_process_environment so that we
1176 don't pollute Vprocess_environment. */
1181 init_buffer (); /* Init default directory of main buffer */
1183 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1184 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1188 /* Erase any pre-dump messages in the message log, to avoid confusion */
1189 Lisp_Object old_log_max
;
1190 old_log_max
= Vmessage_log_max
;
1191 XSETFASTINT (Vmessage_log_max
, 0);
1192 message_dolog ("", 0, 1, 0);
1193 Vmessage_log_max
= old_log_max
;
1196 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1199 /* Intern the names of all standard functions and variables;
1200 define standard keys. */
1204 /* The basic levels of Lisp must come first */
1205 /* And data must come first of all
1206 for the sake of symbols like error-message */
1213 syms_of_floatfns ();
1217 syms_of_bytecode ();
1219 syms_of_casefiddle ();
1221 syms_of_callproc ();
1222 syms_of_category ();
1226 #ifndef NO_DIR_LIBRARY
1228 #endif /* not NO_DIR_LIBRARY */
1234 syms_of_coding (); /* This should be after syms_of_fileio. */
1235 #ifdef CLASH_DETECTION
1236 syms_of_filelock ();
1237 #endif /* CLASH_DETECTION */
1240 syms_of_keyboard ();
1245 syms_of_mocklisp ();
1256 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1257 syms_of_textprop ();
1263 #endif /* WINDOWSNT */
1266 #ifdef HAVE_X_WINDOWS
1273 #endif /* HAVE_X_WINDOWS */
1282 syms_of_w32faces ();
1283 syms_of_w32select ();
1286 #endif /* HAVE_NTGUI */
1296 keys_of_casefiddle ();
1299 keys_of_keyboard ();
1307 if (!noninteractive
)
1310 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1312 init_display (); /* Determine terminal type. init_sys_modes uses results */
1314 init_keyboard (); /* This too must precede init_sys_modes */
1316 init_vmsproc (); /* And this too. */
1318 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1319 #ifdef HAVE_X_WINDOWS
1321 #endif /* HAVE_X_WINDOWS */
1326 #ifdef LISP_FLOAT_TYPE
1340 /* Handle -l loadup, args passed by Makefile. */
1341 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1342 Vtop_level
= Fcons (intern ("load"),
1343 Fcons (build_string (file
), Qnil
));
1345 /* Unless next switch is -nl, load "loadup.el" first thing. */
1347 Vtop_level
= Fcons (intern ("load"),
1348 Fcons (build_string ("loadup.el"), Qnil
));
1349 #endif /* CANNOT_DUMP */
1356 /* If the execution TZ happens to be the same as the dump TZ,
1357 change it to some other value and then change it back,
1358 to force the underlying implementation to reload the TZ info.
1359 This is needed on implementations that load TZ info from files,
1360 since the TZ file contents may differ between dump and execution. */
1361 char *tz
= getenv ("TZ");
1362 if (tz
&& !strcmp (tz
, dump_tz
))
1372 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1373 FreeBSD. It might work on some other systems too.
1374 Give it a try and tell me if it works on your system. */
1379 extern void _mcleanup ();
1381 extern void safe_bcopy ();
1383 /* This uses safe_bcopy because that function comes first in the
1384 Emacs executable. It might be better to use something that
1385 gives the start of the text segment, but start_of_text is not
1386 defined on all systems now. */
1387 monstartup (safe_bcopy
, &etext
);
1396 #ifdef LOCALTIME_CACHE
1397 /* Some versions of localtime have a bug. They cache the value of the time
1398 zone rather than looking it up every time. Since localtime() is
1399 called to bolt the undumping time into the undumped emacs, this
1400 results in localtime ignoring the TZ environment variable.
1401 This flushes the new TZ value into localtime. */
1403 #endif /* defined (LOCALTIME_CACHE) */
1405 /* Enter editor command loop. This never returns. */
1410 /* Sort the args so we can find the most important ones
1411 at the beginning of argv. */
1413 /* First, here's a table of all the standard options. */
1415 struct standard_args
1423 struct standard_args standard_args
[] =
1425 { "-version", "--version", 150, 0 },
1427 { "-nl", "--no-shared-memory", 140, 0 },
1430 { "-map", "--map-data", 130, 0 },
1432 { "-t", "--terminal", 120, 1 },
1433 { "-nw", "--no-windows", 110, 0 },
1434 { "-batch", "--batch", 100, 0 },
1435 { "-help", "--help", 90, 0 },
1436 { "-no-unibyte", "--no-unibyte", 83, 0 },
1437 { "-multibyte", "--multibyte", 82, 0 },
1438 { "-unibyte", "--unibyte", 81, 0 },
1439 { "-no-multibyte", "--no-multibyte", 80, 0 },
1441 { "-nl", "--no-loadup", 70, 0 },
1443 /* -d must come last before the options handled in startup.el. */
1444 { "-d", "--display", 60, 1 },
1445 { "-display", 0, 60, 1 },
1446 /* Now for the options handled in startup.el. */
1447 { "-q", "--no-init-file", 50, 0 },
1448 { "-no-init-file", 0, 50, 0 },
1449 { "-no-site-file", "--no-site-file", 40, 0 },
1450 { "-u", "--user", 30, 1 },
1451 { "-user", 0, 30, 1 },
1452 { "-debug-init", "--debug-init", 20, 0 },
1453 { "-i", "--icon-type", 15, 0 },
1454 { "-itype", 0, 15, 0 },
1455 { "-iconic", "--iconic", 15, 0 },
1456 { "-bg", "--background-color", 10, 1 },
1457 { "-background", 0, 10, 1 },
1458 { "-fg", "--foreground-color", 10, 1 },
1459 { "-foreground", 0, 10, 1 },
1460 { "-bd", "--border-color", 10, 1 },
1461 { "-bw", "--border-width", 10, 1 },
1462 { "-ib", "--internal-border", 10, 1 },
1463 { "-ms", "--mouse-color", 10, 1 },
1464 { "-cr", "--cursor-color", 10, 1 },
1465 { "-fn", "--font", 10, 1 },
1466 { "-font", 0, 10, 1 },
1467 { "-g", "--geometry", 10, 1 },
1468 { "-geometry", 0, 10, 1 },
1469 { "-T", "--title", 10, 1 },
1470 { "-title", 0, 10, 1 },
1471 { "-name", "--name", 10, 1 },
1472 { "-xrm", "--xrm", 10, 1 },
1473 { "-r", "--reverse-video", 5, 0 },
1475 { "-reverse", 0, 5, 0 },
1476 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1477 { "-vb", "--vertical-scroll-bars", 5, 0 },
1478 /* These have the same priority as ordinary file name args,
1479 so they are not reordered with respect to those. */
1480 { "-L", "--directory", 0, 1 },
1481 { "-directory", 0, 0, 1 },
1482 { "-l", "--load", 0, 1 },
1483 { "-load", 0, 0, 1 },
1484 { "-f", "--funcall", 0, 1 },
1485 { "-funcall", 0, 0, 1 },
1486 { "-eval", "--eval", 0, 1 },
1487 { "-find-file", "--find-file", 0, 1 },
1488 { "-visit", "--visit", 0, 1 },
1489 { "-insert", "--insert", 0, 1 },
1490 /* This should be processed after ordinary file name args and the like. */
1491 { "-kill", "--kill", -10, 0 },
1494 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1495 so that the highest priority ones come first.
1496 Do not change the order of elements of equal priority.
1497 If an option takes an argument, keep it and its argument together.
1499 If an option that takes no argument appears more
1500 than once, eliminate all but one copy of it. */
1503 sort_args (argc
, argv
)
1507 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1508 /* For each element of argv,
1509 the corresponding element of options is:
1510 0 for an option that takes no arguments,
1511 1 for an option that takes one argument, etc.
1512 -1 for an ordinary non-option argument. */
1513 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1514 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1516 int incoming_used
= 1;
1520 /* Categorize all the options,
1521 and figure out which argv elts are option arguments. */
1522 for (from
= 1; from
< argc
; from
++)
1526 if (argv
[from
][0] == '-')
1531 /* If we have found "--", don't consider
1532 any more arguments as options. */
1533 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1535 /* Leave the "--", and everything following it, at the end. */
1536 for (; from
< argc
; from
++)
1538 priority
[from
] = -100;
1544 /* Look for a match with a known old-fashioned option. */
1545 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1546 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1548 options
[from
] = standard_args
[i
].nargs
;
1549 priority
[from
] = standard_args
[i
].priority
;
1550 if (from
+ standard_args
[i
].nargs
>= argc
)
1551 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1552 from
+= standard_args
[i
].nargs
;
1556 /* Look for a match with a known long option.
1557 MATCH is -1 if no match so far, -2 if two or more matches so far,
1558 >= 0 (the table index of the match) if just one match so far. */
1559 if (argv
[from
][1] == '-')
1562 thislen
= strlen (argv
[from
]);
1563 equals
= index (argv
[from
], '=');
1565 thislen
= equals
- argv
[from
];
1568 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1569 if (standard_args
[i
].longname
1570 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1579 /* If we found exactly one match, use that. */
1582 options
[from
] = standard_args
[match
].nargs
;
1583 priority
[from
] = standard_args
[match
].priority
;
1584 /* If --OPTION=VALUE syntax is used,
1585 this option uses just one argv element. */
1588 if (from
+ options
[from
] >= argc
)
1589 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1590 from
+= options
[from
];
1597 /* Copy the arguments, in order of decreasing priority, to NEW. */
1599 while (incoming_used
< argc
)
1602 int best_priority
= -9999;
1604 /* Find the highest priority remaining option.
1605 If several have equal priority, take the first of them. */
1606 for (from
= 1; from
< argc
; from
++)
1608 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1610 best_priority
= priority
[from
];
1613 /* Skip option arguments--they are tied to the options. */
1614 if (options
[from
] > 0)
1615 from
+= options
[from
];
1621 /* Copy the highest priority remaining option, with its args, to NEW.
1622 Unless it is a duplicate of the previous one. */
1623 if (! (options
[best
] == 0
1624 && ! strcmp (new[to
- 1], argv
[best
])))
1626 new[to
++] = argv
[best
];
1627 for (i
= 0; i
< options
[best
]; i
++)
1628 new[to
++] = argv
[best
+ i
+ 1];
1631 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1633 /* Clear out this option in ARGV. */
1635 for (i
= 0; i
< options
[best
]; i
++)
1636 argv
[best
+ i
+ 1] = 0;
1639 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1643 bcopy (new, argv
, sizeof (char *) * argc
);
1650 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1651 "Exit the Emacs job and kill it.\n\
1652 If ARG is an integer, return ARG as the exit program code.\n\
1653 If ARG is a string, stuff it as keyboard input.\n\n\
1654 The value of `kill-emacs-hook', if not void,\n\
1655 is a list of functions (of no args),\n\
1656 all of which are called before Emacs is actually killed.")
1660 struct gcpro gcpro1
;
1667 if (!NILP (Vrun_hooks
) && !noninteractive
)
1668 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1672 /* Is it really necessary to do this deassign
1673 when we are going to exit anyway? */
1678 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1680 /* If we have an auto-save list file,
1681 kill it because we are exiting Emacs deliberately (not crashing).
1682 Do it after shut_down_emacs, which does an auto-save. */
1683 if (STRINGP (Vauto_save_list_file_name
))
1684 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1686 exit (INTEGERP (arg
) ? XINT (arg
)
1697 /* Perform an orderly shutdown of Emacs. Autosave any modified
1698 buffers, kill any child processes, clean up the terminal modes (if
1699 we're in the foreground), and other stuff like that. Don't perform
1700 any redisplay; this may be called when Emacs is shutting down in
1701 the background, or after its X connection has died.
1703 If SIG is a signal number, print a message for it.
1705 This is called by fatal signal handlers, X protocol error handlers,
1709 shut_down_emacs (sig
, no_x
, stuff
)
1713 /* Prevent running of hooks from now on. */
1716 /* If we are controlling the terminal, reset terminal modes */
1717 #ifdef EMACS_HAVE_TTY_PGRP
1719 int pgrp
= EMACS_GETPGRP (0);
1722 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1727 if (sig
&& sig
!= SIGTERM
)
1728 fprintf (stderr
, "Fatal error (%d).", sig
);
1736 stuff_buffered_input (stuff
);
1738 kill_buffer_processes (Qnil
);
1739 Fdo_auto_save (Qt
, Qnil
);
1741 #ifdef CLASH_DETECTION
1742 unlock_all_files ();
1746 kill_vms_processes ();
1749 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1750 #ifdef HAVE_X_WINDOWS
1751 /* It's not safe to call intern here. Maybe we are crashing. */
1752 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1753 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1754 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1756 Fx_close_current_connection ();
1757 #endif /* HAVE_X_WINDOWS */
1761 /* There is a tendency for a SIGIO signal to arrive within exit,
1762 and cause a SIGHUP because the input descriptor is already closed. */
1764 signal (SIGIO
, SIG_IGN
);
1771 check_glyph_memory ();
1772 check_message_stack ();
1785 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1786 "Dump current state of Emacs into data file FILENAME.\n\
1787 This function exists on systems that use HAVE_SHM.")
1789 Lisp_Object filename
;
1791 extern char my_edata
[];
1794 CHECK_STRING (filename
, 0);
1795 filename
= Fexpand_file_name (filename
, Qnil
);
1798 Vpurify_flag
= Qnil
;
1801 /* Tell malloc where start of impure now is */
1802 /* Also arrange for warnings when nearly out of space. */
1803 #ifndef SYSTEM_MALLOC
1804 memory_warnings (my_edata
, malloc_warning
);
1806 map_out_data (XSTRING (filename
)->data
);
1813 #else /* not HAVE_SHM */
1815 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1816 "Dump current state of Emacs into executable file FILENAME.\n\
1817 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1818 This is used in the file `loadup.el' when building Emacs.\n\
1820 You must run Emacs in batch mode in order to dump it.")
1822 Lisp_Object filename
, symfile
;
1824 extern char my_edata
[];
1827 int count
= specpdl_ptr
- specpdl
;
1829 if (! noninteractive
)
1830 error ("Dumping Emacs works only in batch mode");
1832 /* Bind `command-line-processed' to nil before dumping,
1833 so that the dumped Emacs will process its command line
1834 and set up to work with X windows if appropriate. */
1835 symbol
= intern ("command-line-process");
1836 specbind (symbol
, Qnil
);
1838 CHECK_STRING (filename
, 0);
1839 filename
= Fexpand_file_name (filename
, Qnil
);
1840 if (!NILP (symfile
))
1842 CHECK_STRING (symfile
, 0);
1843 if (XSTRING (symfile
)->size
)
1844 symfile
= Fexpand_file_name (symfile
, Qnil
);
1848 Vpurify_flag
= Qnil
;
1851 set_time_zone_rule (dump_tz
);
1852 #ifndef LOCALTIME_CACHE
1853 /* Force a tz reload, since set_time_zone_rule doesn't. */
1860 mapout_data (XSTRING (filename
)->data
);
1862 /* Tell malloc where start of impure now is */
1863 /* Also arrange for warnings when nearly out of space. */
1864 #ifndef SYSTEM_MALLOC
1866 /* On Windows, this was done before dumping, and that once suffices.
1867 Meanwhile, my_edata is not valid on Windows. */
1868 memory_warnings (my_edata
, malloc_warning
);
1869 #endif /* not WINDOWSNT */
1871 #ifdef DOUG_LEA_MALLOC
1872 malloc_state_ptr
= malloc_get_state ();
1874 unexec (XSTRING (filename
)->data
,
1875 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1876 #ifdef DOUG_LEA_MALLOC
1877 free (malloc_state_ptr
);
1879 #endif /* not VMS */
1883 return unbind_to (count
, Qnil
);
1886 #endif /* not HAVE_SHM */
1888 #endif /* not CANNOT_DUMP */
1891 /* Recover from setlocale (LC_ALL, ""). */
1897 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
1898 so that numbers are read and printed properly for Emacs Lisp. */
1899 setlocale (LC_NUMERIC
, "C");
1902 l
= setlocale (LC_MESSAGES
, (char *) 0);
1903 Vprevious_messages_locale
= l
? build_string (l
) : Qnil
;
1905 l
= setlocale (LC_TIME
, (char *) 0);
1906 Vprevious_time_locale
= l
? build_string (l
) : Qnil
;
1910 synchronize_locale (category
, plocale
, desired_locale
)
1912 Lisp_Object
*plocale
;
1913 Lisp_Object desired_locale
;
1915 if (STRINGP (desired_locale
)
1916 && (NILP (*plocale
) || NILP (Fstring_equal (*plocale
, desired_locale
)))
1917 && setlocale (category
, XSTRING (desired_locale
)->data
))
1918 *plocale
= desired_locale
;
1921 /* Set system time locale to match Vtime_locale, if possible. */
1923 synchronize_time_locale ()
1925 synchronize_locale (LC_TIME
, &Vprevious_time_locale
, Vtime_locale
);
1928 /* Set system messages locale to match Vmessages_locale, if possible. */
1930 synchronize_messages_locale ()
1933 synchronize_locale (LC_MESSAGES
, &Vprevious_messages_locale
,
1937 #endif /* HAVE_SETLOCALE */
1944 decode_env_path (evarname
, defalt
)
1945 char *evarname
, *defalt
;
1947 register char *path
, *p
;
1948 Lisp_Object lpath
, element
, tem
;
1950 /* It's okay to use getenv here, because this function is only used
1951 to initialize variables when Emacs starts up, and isn't called
1954 path
= (char *) getenv (evarname
);
1960 /* Ensure values from the environment use the proper directory separator. */
1963 p
= alloca (strlen (path
) + 1);
1967 if ('/' == DIRECTORY_SEP
)
1968 dostounix_filename (path
);
1970 unixtodos_filename (path
);
1976 p
= index (path
, SEPCHAR
);
1977 if (!p
) p
= path
+ strlen (path
);
1978 element
= (p
- path
? make_string (path
, p
- path
)
1979 : build_string ("."));
1981 /* Add /: to the front of the name
1982 if it would otherwise be treated as magic. */
1983 tem
= Ffind_file_name_handler (element
, Qt
);
1985 element
= concat2 (build_string ("/:"), element
);
1987 lpath
= Fcons (element
, lpath
);
1993 return Fnreverse (lpath
);
1999 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2000 staticpro (&Qfile_name_handler_alist
);
2004 defsubr (&Sdump_emacs_data
);
2006 defsubr (&Sdump_emacs
);
2010 defsubr (&Skill_emacs
);
2012 defsubr (&Sinvocation_name
);
2013 defsubr (&Sinvocation_directory
);
2015 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2016 "Args passed by shell to Emacs, as a list of strings.");
2018 DEFVAR_LISP ("system-type", &Vsystem_type
,
2019 "Value is symbol indicating type of operating system you are using.");
2020 Vsystem_type
= intern (SYSTEM_TYPE
);
2022 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2023 "Value is string indicating configuration Emacs was built for.");
2024 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2026 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2027 "String containing the configuration options Emacs was built with.");
2028 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2030 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2031 "Non-nil means Emacs is running without interactive terminal.");
2033 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2034 "Hook to be run whenever kill-emacs is called.\n\
2035 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
2036 in other similar situations), functions placed on this hook should not\n\
2037 expect to be able to interact with the user. To ask for confirmation,\n\
2038 see `kill-emacs-query-functions' instead.");
2039 Vkill_emacs_hook
= Qnil
;
2042 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2043 "Hook to be run whenever emacs receives a USR1 signal");
2044 Vsignal_USR1_hook
= Qnil
;
2046 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2047 "Hook to be run whenever emacs receives a USR2 signal");
2048 Vsignal_USR2_hook
= Qnil
;
2053 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2054 "Priority for Emacs to run at.\n\
2055 This value is effective only if set before Emacs is dumped,\n\
2056 and only if the Emacs executable is installed with setuid to permit\n\
2057 it to change priority. (Emacs sets its uid back to the real uid.)\n\
2058 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
2059 before you compile Emacs, to enable the code for this feature.");
2062 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2063 "The directory separator in search paths, as a string.");
2066 Vpath_separator
= make_string (&c
, 1);
2069 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2070 "The program name that was used to run Emacs.\n\
2071 Any directory names are omitted.");
2073 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2074 "The directory in which the Emacs executable was found, to run it.\n\
2075 The value is nil if that directory's name is not known.");
2077 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2078 "A directory within which to look for the `lib-src' and `etc' directories.\n\
2079 This is non-nil when we can't find those directories in their standard\n\
2080 installed locations, but we can find them\n\
2081 near where the Emacs executable was found.");
2082 Vinstallation_directory
= Qnil
;
2084 DEFVAR_LISP ("messages-locale", &Vmessages_locale
,
2085 "System locale for messages.");
2086 Vmessages_locale
= Qnil
;
2088 DEFVAR_LISP ("previous-messages-locale", &Vprevious_messages_locale
,
2089 "Most recently used system locale for messages.");
2090 Vprevious_messages_locale
= Qnil
;
2092 DEFVAR_LISP ("time-locale", &Vtime_locale
,
2093 "System locale for time.");
2094 Vtime_locale
= Qnil
;
2096 DEFVAR_LISP ("previous-time-locale", &Vprevious_time_locale
,
2097 "Most recently used system locale for time.");
2098 Vprevious_time_locale
= Qnil
;