1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,2003
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
40 #include <sys/ioctl.h>
49 #include "intervals.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
58 #include "termhooks.h"
68 #include <sys/resource.h>
76 #if !defined (USG) || defined (BSD_PGRPS)
78 #define setpgrp setpgid
82 extern void malloc_warning
P_ ((char *));
83 extern void set_time_zone_rule
P_ ((char *));
85 extern char *index
P_ ((const char *, int));
88 /* Make these values available in GDB, which doesn't see macros. */
90 EMACS_INT gdb_valbits
= VALBITS
;
91 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
92 EMACS_INT gdb_emacs_intbits
= sizeof (EMACS_INT
) * BITS_PER_CHAR
;
94 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
96 EMACS_INT gdb_data_seg_bits
= 0;
98 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
100 /* Command line args from shell, as list of strings. */
101 Lisp_Object Vcommand_line_args
;
103 /* The name under which Emacs was invoked, with any leading directory
105 Lisp_Object Vinvocation_name
;
107 /* The directory name from which Emacs was invoked. */
108 Lisp_Object Vinvocation_directory
;
110 /* The directory name in which to find subdirs such as lisp and etc.
111 nil means get them only from PATH_LOADSEARCH. */
112 Lisp_Object Vinstallation_directory
;
114 /* Hook run by `kill-emacs' before it does really anything. */
115 Lisp_Object Vkill_emacs_hook
;
117 /* An empty lisp string. To avoid having to build any other. */
118 Lisp_Object empty_string
;
121 /* Hooks for signal USR1 and USR2 handling. */
122 Lisp_Object Vsignal_USR1_hook
;
124 Lisp_Object Vsignal_USR2_hook
;
128 /* Search path separator. */
129 Lisp_Object Vpath_separator
;
131 /* Set nonzero after Emacs has started up the first time.
132 Prevents reinitialization of the Lisp world and keymaps
133 on subsequent starts. */
136 #ifdef DOUG_LEA_MALLOC
137 /* Preserves a pointer to the memory allocated that copies that
138 static data inside glibc's malloc. */
139 void *malloc_state_ptr
;
140 /* From glibc, a routine that returns a copy of the malloc internal state. */
141 extern void *malloc_get_state ();
142 /* From glibc, a routine that overwrites the malloc internal state. */
143 extern void malloc_set_state ();
144 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
145 dumping. Used to work around a bug in glibc's malloc. */
146 int malloc_using_checking
;
149 /* Variable whose value is symbol giving operating system type. */
150 Lisp_Object Vsystem_type
;
152 /* Variable whose value is string giving configuration built for. */
153 Lisp_Object Vsystem_configuration
;
155 /* Variable whose value is string giving configuration options,
156 for use when reporting bugs. */
157 Lisp_Object Vsystem_configuration_options
;
159 Lisp_Object Qfile_name_handler_alist
;
161 /* Current and previous system locales for messages and time. */
162 Lisp_Object Vsystem_messages_locale
;
163 Lisp_Object Vprevious_system_messages_locale
;
164 Lisp_Object Vsystem_time_locale
;
165 Lisp_Object Vprevious_system_time_locale
;
167 /* If non-zero, emacs should not attempt to use a window-specific code,
168 but instead should use the virtual terminal under which it was started. */
169 int inhibit_window_system
;
171 /* If nonzero, set Emacs to run at this priority. This is also used
172 in child_setup and sys_suspend to make sure subshells run at normal
173 priority; those functions have their own extern declaration. */
174 EMACS_INT emacs_priority
;
176 /* If non-zero, a filter or a sentinel is running. Tested to save the match
177 data on the first attempt to change it inside asynchronous code. */
178 int running_asynch_code
;
182 extern int inherited_pgroup
;
185 #ifdef HAVE_X_WINDOWS
186 /* If non-zero, -d was specified, meaning we're using some window system. */
190 /* An address near the bottom of the stack.
191 Tells GC how to save a copy of the stack. */
194 #ifdef HAVE_WINDOW_SYSTEM
195 extern Lisp_Object Vinitial_window_system
;
196 #endif /* HAVE_WINDOW_SYSTEM */
198 extern Lisp_Object Vauto_save_list_file_name
;
200 #ifdef USG_SHARED_LIBRARIES
201 /* If nonzero, this is the place to put the end of the writable segment
204 unsigned int bss_end
= 0;
207 /* Nonzero means running Emacs without interactive terminal. */
211 /* Value of Lisp variable `noninteractive'.
212 Normally same as C variable `noninteractive'
213 but nothing terrible happens if user sets this one. */
217 /* Save argv and argc. */
221 static void sort_args ();
222 void syms_of_emacs ();
225 Usage: %s [OPTION-OR-FILENAME]...\n\
227 Run Emacs, the extensible, customizable, self-documenting real-time\n\
228 display editor. The recommended way to start Emacs for normal editing\n\
229 is with no options at all.\n\
231 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
232 read the main documentation for these command-line arguments.\n\
234 Initialization options:\n\
236 --batch do not do interactive display; implies -q\n\
237 --script FILE run FILE as an Emacs Lisp script.\n\
238 --debug-init enable Emacs Lisp debugger during init file\n\
239 --help display this help message and exit\n\
240 --multibyte, --no-unibyte run Emacs in multibyte mode\n\
241 --no-init-file, -q load neither ~/.emacs nor default.el\n\
242 --no-shared-memory, -nl do not use shared memory\n\
243 --no-site-file do not load site-start.el\n\
244 --no-splash do not display a splash screen on startup\n\
245 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
246 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
247 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
249 --version display version information and exit\n\
253 FILE visit FILE using find-file\n\
254 +LINE FILE visit FILE using find-file, then go to line LINE\n\
255 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
257 --directory, -L DIR add DIR to variable load-path\n\
258 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
259 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
260 --find-file FILE visit FILE\n\
261 --funcall, -f FUNC call Emacs function FUNC with no arguments\n\
262 --insert FILE insert contents of FILE into current buffer\n\
263 --kill exit without asking for confirmation\n\
264 --load, -l FILE load FILE of Emacs Lisp code using the load function\n\
265 --visit FILE visit FILE\n\
271 --background-color, -bg COLOR window background color\n\
272 --border-color, -bd COLOR main border color\n\
273 --border-width, -bw WIDTH width of main border\n\
274 --color=MODE color mode for character terminals;\n\
275 MODE defaults to `auto', and can also\n\
276 be `never', `auto', `always',\n\
277 or a mode name like `ansi8'\n\
278 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
279 --display, -d DISPLAY use X server DISPLAY\n\
280 --font, -fn FONT default font; must be fixed-width\n\
281 --foreground-color, -fg COLOR window foreground color\n\
282 --fullscreen, -fs make first frame fullscreen\n\
283 --fullwidth, -fw make the first frame wide as the screen\n\
284 --fullheight, -fh make the first frame high as the screen\n\
285 --geometry, -g GEOMETRY window geometry\n\
286 --iconic start Emacs in iconified state\n\
287 --icon-type, -i use picture of gnu for Emacs icon\n\
288 --internal-border, -ib WIDTH width between text and main border\n\
289 --line-spacing, -lsp PIXELS additional space to put between lines\n\
290 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
291 --name NAME title of main Emacs window\n\
292 --reverse-video, -r, -rv switch foreground and background\n\
293 --title, -T, -wn TITLE title for Emacs windows\n\
294 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
295 --xrm XRESOURCES set additional X resources\n\
297 You can generally also specify long option names with a single -; for\n\
298 example, -batch as well as --batch. You can use any unambiguous\n\
299 abbreviation for a --option.\n\
301 Various environment variables and window system resources also affect\n\
302 Emacs' operation. See the main documentation.\n\
306 Report bugs to %s. First, please see the Bugs\n\
307 section of the Emacs manual or the file BUGS.\n"
310 /* Signal code for the fatal signal that was received. */
311 int fatal_error_code
;
313 /* Nonzero if handling a fatal error already. */
314 int fatal_error_in_progress
;
316 /* If non-null, call this function from fatal_error_signal before
317 committing suicide. */
319 void (*fatal_error_signal_hook
) P_ ((void));
324 handle_USR1_signal (sig
)
327 struct input_event buf
;
329 bzero (&buf
, sizeof buf
);
330 buf
.kind
= USER_SIGNAL_EVENT
;
331 buf
.frame_or_window
= selected_frame
;
333 kbd_buffer_store_event (&buf
);
339 handle_USR2_signal (sig
)
342 struct input_event buf
;
344 bzero (&buf
, sizeof buf
);
345 buf
.kind
= USER_SIGNAL_EVENT
;
347 buf
.frame_or_window
= selected_frame
;
349 kbd_buffer_store_event (&buf
);
353 /* Handle bus errors, invalid instruction, etc. */
355 fatal_error_signal (sig
)
358 fatal_error_code
= sig
;
359 signal (sig
, SIG_DFL
);
361 TOTALLY_UNBLOCK_INPUT
;
363 /* If fatal error occurs in code below, avoid infinite recursion. */
364 if (! fatal_error_in_progress
)
366 fatal_error_in_progress
= 1;
368 shut_down_emacs (sig
, 0, Qnil
);
372 LIB$
STOP (SS$_ABORT
);
374 /* Signal the same code; this time it will really be fatal.
375 Remember that since we're in a signal handler, the signal we're
376 going to send is probably blocked, so we have to unblock it if we
377 want to really receive it. */
379 sigunblock (sigmask (fatal_error_code
));
382 if (fatal_error_signal_hook
)
383 fatal_error_signal_hook ();
385 kill (getpid (), fatal_error_code
);
391 /* Handler for SIGDANGER. */
393 memory_warning_signal (sig
)
396 signal (sig
, memory_warning_signal
);
398 malloc_warning ("Operating system warns that virtual memory is running low.\n");
400 /* It might be unsafe to call do_auto_save now. */
401 force_auto_save_soon ();
405 /* We define abort, rather than using it from the library,
406 so that GDB can return from a breakpoint here.
407 MSDOS has its own definition in msdos.c. */
409 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
411 #ifndef ABORT_RETURN_TYPE
412 #define ABORT_RETURN_TYPE void
418 kill (getpid (), SIGABRT
);
419 /* This shouldn't be executed, but it prevents a warning. */
425 /* Code for dealing with Lisp access to the Unix command line. */
428 init_cmdargs (argc
, argv
, skip_args
)
434 Lisp_Object name
, dir
, tem
;
435 int count
= SPECPDL_INDEX ();
436 Lisp_Object raw_name
;
441 raw_name
= build_string (argv
[0]);
443 /* Add /: to the front of the name
444 if it would otherwise be treated as magic. */
445 tem
= Ffind_file_name_handler (raw_name
, Qt
);
447 raw_name
= concat2 (build_string ("/:"), raw_name
);
449 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
450 Vinvocation_directory
= Ffile_name_directory (raw_name
);
452 /* If we got no directory in argv[0], search PATH to find where
453 Emacs actually came from. */
454 if (NILP (Vinvocation_directory
))
457 int yes
= openp (Vexec_path
, Vinvocation_name
,
458 Vexec_suffixes
, &found
, make_number (X_OK
));
461 /* Add /: to the front of the name
462 if it would otherwise be treated as magic. */
463 tem
= Ffind_file_name_handler (found
, Qt
);
465 found
= concat2 (build_string ("/:"), found
);
466 Vinvocation_directory
= Ffile_name_directory (found
);
470 if (!NILP (Vinvocation_directory
)
471 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
472 /* Emacs was started with relative path, like ./emacs.
474 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
476 Vinstallation_directory
= Qnil
;
478 if (!NILP (Vinvocation_directory
))
480 dir
= Vinvocation_directory
;
481 name
= Fexpand_file_name (Vinvocation_name
, dir
);
484 Lisp_Object tem
, lib_src_exists
;
485 Lisp_Object etc_exists
, info_exists
;
487 /* See if dir contains subdirs for use by Emacs.
488 Check for the ones that would exist in a build directory,
489 not including lisp and info. */
490 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
491 lib_src_exists
= Ffile_exists_p (tem
);
494 /* MSDOS installations frequently remove lib-src, but we still
495 must set installation-directory, or else info won't find
496 its files (it uses the value of installation-directory). */
497 tem
= Fexpand_file_name (build_string ("info"), dir
);
498 info_exists
= Ffile_exists_p (tem
);
503 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
505 tem
= Fexpand_file_name (build_string ("etc"), dir
);
506 etc_exists
= Ffile_exists_p (tem
);
507 if (!NILP (etc_exists
))
509 Vinstallation_directory
510 = Ffile_name_as_directory (dir
);
515 /* See if dir's parent contains those subdirs. */
516 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
517 lib_src_exists
= Ffile_exists_p (tem
);
521 /* See the MSDOS commentary above. */
522 tem
= Fexpand_file_name (build_string ("../info"), dir
);
523 info_exists
= Ffile_exists_p (tem
);
528 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
530 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
531 etc_exists
= Ffile_exists_p (tem
);
532 if (!NILP (etc_exists
))
534 tem
= Fexpand_file_name (build_string (".."), dir
);
535 Vinstallation_directory
536 = Ffile_name_as_directory (tem
);
541 /* If the Emacs executable is actually a link,
542 next try the dir that the link points into. */
543 tem
= Ffile_symlink_p (name
);
546 name
= Fexpand_file_name (tem
, dir
);
547 dir
= Ffile_name_directory (name
);
554 Vcommand_line_args
= Qnil
;
556 for (i
= argc
- 1; i
>= 0; i
--)
558 if (i
== 0 || i
> skip_args
)
560 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
563 unbind_to (count
, Qnil
);
566 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
567 doc
: /* Return the program name that was used to run Emacs.
568 Any directory names are omitted. */)
571 return Fcopy_sequence (Vinvocation_name
);
574 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
576 doc
: /* Return the directory name in which the Emacs executable was located. */)
579 return Fcopy_sequence (Vinvocation_directory
);
584 #ifdef LINK_CRTL_SHARE
585 #ifdef SHARABLE_LIB_BUG
586 extern noshare
char **environ
;
587 #endif /* SHARABLE_LIB_BUG */
588 #endif /* LINK_CRTL_SHARE */
592 /* A valid but unlikely value for the TZ environment value.
593 It is OK (though a bit slower) if the user actually chooses this value. */
594 static char dump_tz
[] = "UtC0";
597 #ifndef ORDINARY_LINK
598 /* We don't include crtbegin.o and crtend.o in the link,
599 so these functions and variables might be missed.
600 Provide dummy definitions to avoid error.
601 (We don't have any real constructors or destructors.) */
603 #ifndef GCC_CTORS_IN_LIBC
604 void __do_global_ctors ()
606 void __do_global_ctors_aux ()
608 void __do_global_dtors ()
610 /* GNU/Linux has a bug in its library; avoid an error. */
612 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
614 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
615 #endif /* GCC_CTORS_IN_LIBC */
618 #endif /* __GNUC__ */
619 #endif /* ORDINARY_LINK */
621 /* Test whether the next argument in ARGV matches SSTR or a prefix of
622 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
623 (the argument is supposed to have a value) store in *VALPTR either
624 the next argument or the portion of this one after the equal sign.
625 ARGV is read starting at position *SKIPPTR; this index is advanced
626 by the number of arguments used.
628 Too bad we can't just use getopt for all of this, but we don't have
629 enough information to do it right. */
632 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
645 /* Don't access argv[argc]; give up in advance. */
646 if (argc
<= *skipptr
+ 1)
649 arg
= argv
[*skipptr
+1];
652 if (strcmp (arg
, sstr
) == 0)
656 *valptr
= argv
[*skipptr
+2];
663 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
664 ? p
- arg
: strlen (arg
));
665 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
667 else if (valptr
== NULL
)
678 else if (argv
[*skipptr
+2] != NULL
)
680 *valptr
= argv
[*skipptr
+2];
690 #ifdef DOUG_LEA_MALLOC
692 /* malloc can be invoked even before main (e.g. by the dynamic
693 linker), so the dumped malloc state must be restored as early as
694 possible using this special hook. */
697 malloc_initialize_hook ()
700 extern char **environ
;
705 if (!malloc_using_checking
)
706 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
707 ignored if the heap to be restored was constructed without
708 malloc checking. Can't use unsetenv, since that calls malloc. */
712 for (p
= environ
; p
&& *p
; p
++)
713 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
722 malloc_set_state (malloc_state_ptr
);
723 free (malloc_state_ptr
);
726 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
729 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
731 #endif /* DOUG_LEA_MALLOC */
734 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
735 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
737 /* This function is used to determine an address to which bug report should
741 bug_reporting_address ()
747 temp
= Fsymbol_value (intern ("emacs-version"));
749 /* When `emacs-version' is invalid, use normal address. */
751 return REPORT_EMACS_BUG_ADDRESS
;
753 string
= SDATA (temp
);
755 /* Count dots in `emacs-version'. */
763 /* When `emacs-version' has at least three dots, it is development or
764 pretest version of Emacs. */
765 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
785 char stack_bottom_variable
;
786 int do_initial_setlocale
;
791 #ifdef HAVE_SETRLIMIT
798 extern Lisp_Object
*stack_base
;
802 #ifdef LINUX_SBRK_BUG
806 #ifdef RUN_TIME_REMAP
808 run_time_remap (argv
[0]);
813 unexec_init_emacs_zone ();
816 sort_args (argc
, argv
);
818 while (argv
[argc
]) argc
++;
820 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
821 /* We don't know the version number unless this is a dumped Emacs.
822 So ignore --version otherwise. */
826 tem
= Fsymbol_value (intern ("emacs-version"));
829 fprintf (stderr
, "Invalid value of `emacs-version'\n");
834 printf ("GNU Emacs %s\n", SDATA (tem
));
835 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
836 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
837 printf ("You may redistribute copies of Emacs\n");
838 printf ("under the terms of the GNU General Public License.\n");
839 printf ("For more information about these matters, ");
840 printf ("see the file named COPYING.\n");
845 /* Map in shared memory, if we are using that. */
847 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
850 /* The shared memory was just restored, which clobbered this. */
856 /* The shared memory was just restored, which clobbered this. */
863 extern int malloc_cookie
;
864 /* This helps out unexnext.c. */
866 if (malloc_jumpstart (malloc_cookie
) != 0)
867 printf ("malloc jumpstart failed!\n");
872 /* Skip process serial number passed in the form -psn_x_y as
873 command-line argument. */
874 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
879 /* If -map specified, map the data file in. */
882 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
886 #ifdef LINK_CRTL_SHARE
887 #ifdef SHARABLE_LIB_BUG
888 /* Bletcherous shared libraries! */
890 stdin
= fdopen (0, "r");
892 stdout
= fdopen (1, "w");
894 stderr
= fdopen (2, "w");
897 #endif /* SHARABLE_LIB_BUG */
898 #endif /* LINK_CRTL_SHARE */
901 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
902 /* Extend the stack space available.
903 Don't do that if dumping, since some systems (e.g. DJGPP)
904 might define a smaller stack limit at that time. */
907 && (!noninteractive
|| initialized
)
909 && !getrlimit (RLIMIT_STACK
, &rlim
))
912 extern int re_max_failures
;
913 /* Approximate the amount regex.c needs per unit of re_max_failures. */
914 int ratio
= 20 * sizeof (char *);
915 /* Then add 33% to cover the size of the smaller stacks that regex.c
916 successively allocates and discards, on its way to the maximum. */
918 /* Add in some extra to cover
919 what we're likely to use for other reasons. */
920 newlim
= re_max_failures
* ratio
+ 200000;
922 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
923 stack allocation routine for new process that the allocation
924 fails if stack limit is not on page boundary. So, round up the
925 new limit to page boundary. */
926 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
928 if (newlim
> rlim
.rlim_max
)
930 newlim
= rlim
.rlim_max
;
931 /* Don't let regex.c overflow the stack we have. */
932 re_max_failures
= (newlim
- 200000) / ratio
;
934 if (rlim
.rlim_cur
< newlim
)
935 rlim
.rlim_cur
= newlim
;
937 setrlimit (RLIMIT_STACK
, &rlim
);
939 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
941 /* Record (approximately) where the stack begins. */
942 stack_bottom
= &stack_bottom_variable
;
944 #ifdef USG_SHARED_LIBRARIES
946 brk ((void *)bss_end
);
951 #ifndef SYSTEM_MALLOC
952 /* Arrange to get warning messages as memory fills up. */
953 memory_warnings (0, malloc_warning
);
955 /* Call malloc at least once, to run the initial __malloc_hook.
956 Also call realloc and free for consistency. */
957 free (realloc (malloc (4), 4));
959 /* Arrange to disable interrupt input inside malloc etc. */
960 uninterrupt_malloc ();
961 #endif /* not SYSTEM_MALLOC */
963 #if defined (MSDOS) || defined (WINDOWSNT)
964 /* We do all file input/output as binary files. When we need to translate
965 newlines, we do that manually. */
967 #endif /* MSDOS || WINDOWSNT */
971 if (!isatty (fileno (stdin
)))
972 setmode (fileno (stdin
), O_BINARY
);
973 if (!isatty (fileno (stdout
)))
976 setmode (fileno (stdout
), O_BINARY
);
978 #else /* not __DJGPP__ >= 2 */
979 (stdin
)->_flag
&= ~_IOTEXT
;
980 (stdout
)->_flag
&= ~_IOTEXT
;
981 (stderr
)->_flag
&= ~_IOTEXT
;
982 #endif /* not __DJGPP__ >= 2 */
985 #ifdef SET_EMACS_PRIORITY
987 nice (emacs_priority
);
989 #endif /* SET_EMACS_PRIORITY */
991 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
992 The build procedure uses this while dumping, to ensure that the
993 dumped Emacs does not have its system locale tables initialized,
994 as that might cause screwups when the dumped Emacs starts up. */
996 char *lc_all
= getenv ("LC_ALL");
997 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1000 /* Set locale now, so that initial error messages are localized properly.
1001 fixup_locale must wait until later, since it builds strings. */
1002 if (do_initial_setlocale
)
1003 setlocale (LC_ALL
, "");
1005 #ifdef EXTRA_INITIALIZE
1009 inhibit_window_system
= 0;
1011 /* Handle the -t switch, which specifies filename to use as terminal. */
1015 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1020 result
= emacs_open (term
, O_RDWR
, 0);
1023 char *errstring
= strerror (errno
);
1024 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1030 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1033 fprintf (stderr
, "Using %s\n", term
);
1034 #ifdef HAVE_WINDOW_SYSTEM
1035 inhibit_window_system
= 1; /* -t => -nw */
1042 /* Command line option --no-windows is deprecated and thus not mentioned
1043 in the manual and usage informations. */
1044 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1045 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1046 inhibit_window_system
= 1;
1048 /* Handle the -batch switch, which means don't do interactive display. */
1050 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1052 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1054 noninteractive
= 1; /* Set batch mode. */
1055 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1056 handled in proper sequence. */
1057 argv
[skip_args
- 1] = "-l";
1059 sort_args (argc
, argv
);
1062 /* Handle the --help option, which gives a usage message. */
1063 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1065 printf (USAGE1
, argv
[0]);
1067 printf (USAGE3
, bug_reporting_address ());
1071 if (! noninteractive
)
1076 inherited_pgroup
= EMACS_GETPGRP (0);
1077 setpgrp (0, getpid ());
1080 #if defined (USG5) && defined (INTERRUPT_INPUT)
1088 /* Don't catch SIGHUP if dumping. */
1095 sigblock (sigmask (SIGHUP
));
1096 /* In --batch mode, don't catch SIGHUP if already ignored.
1097 That makes nohup work. */
1098 if (! noninteractive
1099 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1100 signal (SIGHUP
, fatal_error_signal
);
1101 sigunblock (sigmask (SIGHUP
));
1106 ! noninteractive
|| initialized
1112 /* Don't catch these signals in batch mode if dumping.
1113 On some machines, this sets static data that would make
1114 signal fail to work right when the dumped Emacs is run. */
1115 signal (SIGQUIT
, fatal_error_signal
);
1116 signal (SIGILL
, fatal_error_signal
);
1117 signal (SIGTRAP
, fatal_error_signal
);
1119 signal (SIGUSR1
, handle_USR1_signal
);
1121 signal (SIGUSR2
, handle_USR2_signal
);
1125 signal (SIGABRT
, fatal_error_signal
);
1128 signal (SIGHWE
, fatal_error_signal
);
1131 signal (SIGPRE
, fatal_error_signal
);
1134 signal (SIGORE
, fatal_error_signal
);
1137 signal (SIGUME
, fatal_error_signal
);
1140 signal (SIGDLK
, fatal_error_signal
);
1143 signal (SIGCPULIM
, fatal_error_signal
);
1146 /* This is missing on some systems - OS/2, for example. */
1147 signal (SIGIOT
, fatal_error_signal
);
1150 signal (SIGEMT
, fatal_error_signal
);
1152 signal (SIGFPE
, fatal_error_signal
);
1154 signal (SIGBUS
, fatal_error_signal
);
1156 signal (SIGSEGV
, fatal_error_signal
);
1158 signal (SIGSYS
, fatal_error_signal
);
1160 signal (SIGTERM
, fatal_error_signal
);
1162 signal (SIGXCPU
, fatal_error_signal
);
1165 signal (SIGXFSZ
, fatal_error_signal
);
1166 #endif /* SIGXFSZ */
1169 /* This just means available memory is getting low. */
1170 signal (SIGDANGER
, memory_warning_signal
);
1174 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1175 signal (SIGXCPU
, fatal_error_signal
);
1177 signal (SIGIOINT
, fatal_error_signal
);
1179 signal (SIGGRANT
, fatal_error_signal
);
1180 signal (SIGRETRACT
, fatal_error_signal
);
1181 signal (SIGSOUND
, fatal_error_signal
);
1182 signal (SIGMSG
, fatal_error_signal
);
1186 noninteractive1
= noninteractive
;
1188 /* Perform basic initializations (not merely interning symbols). */
1195 init_charset_once ();
1196 init_coding_once ();
1197 init_syntax_once (); /* Create standard syntax table. */
1198 init_category_once (); /* Create standard category table. */
1199 /* Must be done before init_buffer. */
1200 init_casetab_once ();
1201 init_buffer_once (); /* Create buffer table and some buffers. */
1202 init_minibuf_once (); /* Create list of minibuffers. */
1203 /* Must precede init_window_once. */
1205 /* Call syms_of_xfaces before init_window_once because that
1206 function creates Vterminal_frame. Termcap frames now use
1207 faces, and the face implementation uses some symbols as
1210 /* Call syms_of_keyboard before init_window_once because
1211 keyboard sets up symbols that include some face names that
1212 the X support will want to use. This can happen when
1213 CANNOT_DUMP is defined. */
1214 syms_of_keyboard ();
1217 /* init_window_once calls make_terminal_frame which on Mac OS
1218 creates a full-fledge output_mac type frame. This does not
1219 work correctly before syms_of_textprop, syms_of_macfns,
1220 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1221 syms_of_frame, mac_initialize, and init_keyboard have already
1223 syms_of_textprop ();
1237 init_window_once (); /* Init the window system. */
1238 init_fileio_once (); /* Must precede any path manipulation. */
1243 if (do_initial_setlocale
)
1246 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1247 Vsystem_time_locale
= Vprevious_system_time_locale
;
1252 #ifdef CLASH_DETECTION
1256 running_asynch_code
= 0;
1258 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1259 but not while dumping. */
1262 int inhibit_unibyte
= 0;
1264 /* --multibyte overrides EMACS_UNIBYTE. */
1265 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1266 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1267 /* Ignore EMACS_UNIBYTE before dumping. */
1268 || (!initialized
&& noninteractive
))
1269 inhibit_unibyte
= 1;
1271 /* --unibyte requests that we set up to do everything with single-byte
1272 buffers and strings. We need to handle this before calling
1273 init_lread, init_editfns and other places that generate Lisp strings
1274 from text in the environment. */
1275 /* Actually this shouldn't be needed as of 20.4 in a generally
1276 unibyte environment. As handa says, environment values
1277 aren't now decoded; also existing buffers are now made
1278 unibyte during startup if .emacs sets unibyte. Tested with
1279 8-bit data in environment variables and /etc/passwd, setting
1280 unibyte and Latin-1 in .emacs. -- Dave Love */
1281 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1282 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1283 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1285 Lisp_Object old_log_max
;
1286 Lisp_Object symbol
, tail
;
1288 symbol
= intern ("default-enable-multibyte-characters");
1289 Fset (symbol
, Qnil
);
1293 /* Erase pre-dump messages in *Messages* now so no abort. */
1294 old_log_max
= Vmessage_log_max
;
1295 XSETFASTINT (Vmessage_log_max
, 0);
1296 message_dolog ("", 0, 1, 0);
1297 Vmessage_log_max
= old_log_max
;
1300 for (tail
= Vbuffer_alist
; CONSP (tail
);
1305 buffer
= Fcdr (XCAR (tail
));
1306 /* Verify that all buffers are empty now, as they
1308 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1310 /* It is safe to do this crudely in an empty buffer. */
1311 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1317 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1320 #ifdef HAVE_X_WINDOWS
1321 /* Stupid kludge to catch command-line display spec. We can't
1322 handle this argument entirely in window system dependent code
1323 because we don't even know which window system dependent code
1324 to run until we've recognized this argument. */
1326 char *displayname
= 0;
1327 int count_before
= skip_args
;
1329 /* Skip any number of -d options, but only use the last one. */
1332 int count_before_this
= skip_args
;
1334 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1336 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1341 count_before
= count_before_this
;
1344 /* If we have the form --display=NAME,
1345 convert it into -d name.
1346 This requires inserting a new element into argv. */
1347 if (displayname
!= 0 && skip_args
- count_before
== 1)
1349 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1352 for (j
= 0; j
< count_before
+ 1; j
++)
1354 new[count_before
+ 1] = "-d";
1355 new[count_before
+ 2] = displayname
;
1356 for (j
= count_before
+ 2; j
<argc
; j
++)
1357 new[j
+ 1] = argv
[j
];
1361 /* Change --display to -d, when its arg is separate. */
1362 else if (displayname
!= 0 && skip_args
> count_before
1363 && argv
[count_before
+ 1][1] == '-')
1364 argv
[count_before
+ 1] = "-d";
1366 /* Don't actually discard this arg. */
1367 skip_args
= count_before
;
1371 /* argmatch must not be used after here,
1372 except when bulding temacs
1373 because the -d argument has not been skipped in skip_args. */
1376 /* Call early 'cause init_environment needs it. */
1378 /* Set defaults for several environment variables. */
1380 init_environment (argc
, argv
, skip_args
);
1387 /* Initialize environment from registry settings. */
1388 init_environment (argv
);
1389 init_ntproc (); /* must precede init_editfns. */
1394 init_mac_osx_environment ();
1397 /* egetenv is a pretty low-level facility, which may get called in
1398 many circumstances; it seems flimsy to put off initializing it
1399 until calling init_callproc. */
1400 set_process_environment ();
1401 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1402 if this is not done. Do it after set_process_environment so that we
1403 don't pollute Vprocess_environment. */
1404 /* Setting LANG here will defeat the startup locale processing... */
1409 init_buffer (); /* Init default directory of main buffer. */
1411 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1412 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1416 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1417 Lisp_Object old_log_max
;
1418 old_log_max
= Vmessage_log_max
;
1419 XSETFASTINT (Vmessage_log_max
, 0);
1420 message_dolog ("", 0, 1, 0);
1421 Vmessage_log_max
= old_log_max
;
1424 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1427 /* Intern the names of all standard functions and variables;
1428 define standard keys. */
1432 /* The basic levels of Lisp must come first. */
1433 /* And data must come first of all
1434 for the sake of symbols like error-message. */
1436 /* Called before init_window_once for Mac OS Classic. */
1444 syms_of_floatfns ();
1448 syms_of_bytecode ();
1450 syms_of_casefiddle ();
1452 syms_of_callproc ();
1453 syms_of_category ();
1455 /* Called before init_window_once for Mac OS Classic. */
1460 #ifndef NO_DIR_LIBRARY
1462 #endif /* not NO_DIR_LIBRARY */
1468 syms_of_coding (); /* This should be after syms_of_fileio. */
1469 #ifdef CLASH_DETECTION
1470 syms_of_filelock ();
1471 #endif /* CLASH_DETECTION */
1480 /* Called before init_window_once for Mac OS Classic. */
1491 /* Called before init_window_once for Mac OS Classic. */
1492 syms_of_textprop ();
1494 syms_of_composite ();
1500 #endif /* WINDOWSNT */
1503 #ifdef HAVE_X_WINDOWS
1513 #endif /* HAVE_X_WINDOWS */
1517 /* Called before init_window_once for Mac OS Classic. */
1525 syms_of_w32select ();
1528 #endif /* HAVE_NTGUI */
1535 #endif /* HAVE_CARBON */
1545 keys_of_casefiddle ();
1548 keys_of_keyboard ();
1556 Initialization that must be done even if the global variable
1557 initialized is non zero
1560 globals_of_w32fns ();
1561 globals_of_w32menu ();
1562 #endif /* end #ifdef HAVE_NTGUI */
1566 /* Called before init_window_once for Mac OS Classic. */
1567 init_keyboard (); /* This too must precede init_sys_modes. */
1570 init_vmsproc (); /* And this too. */
1572 if (!noninteractive
)
1575 init_vms_input ();/* init_display calls get_tty_size, that needs this. */
1577 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1579 #if defined (HAVE_X_WINDOWS) || defined (WINDOWSNT)
1581 #endif /* HAVE_X_WINDOWS */
1599 /* Handle -l loadup, args passed by Makefile. */
1600 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1601 Vtop_level
= Fcons (intern ("load"),
1602 Fcons (build_string (file
), Qnil
));
1603 /* Unless next switch is -nl, load "loadup.el" first thing. */
1605 Vtop_level
= Fcons (intern ("load"),
1606 Fcons (build_string ("loadup.el"), Qnil
));
1613 /* If the execution TZ happens to be the same as the dump TZ,
1614 change it to some other value and then change it back,
1615 to force the underlying implementation to reload the TZ info.
1616 This is needed on implementations that load TZ info from files,
1617 since the TZ file contents may differ between dump and execution. */
1618 char *tz
= getenv ("TZ");
1619 if (tz
&& !strcmp (tz
, dump_tz
))
1629 /* Set up for profiling. This is known to work on FreeBSD and
1630 GNU/Linux. It might work on some other systems too. Give it a
1631 try and tell us if it works on your system. To compile for
1632 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1633 #if defined (__FreeBSD__) || defined (__linux)
1637 extern void _mcleanup ();
1639 extern void safe_bcopy ();
1640 extern void dump_opcode_frequencies ();
1643 /* This uses safe_bcopy because that function comes first in the
1644 Emacs executable. It might be better to use something that
1645 gives the start of the text segment, but start_of_text is not
1646 defined on all systems now. */
1647 monstartup (safe_bcopy
, &etext
);
1656 #ifdef LOCALTIME_CACHE
1657 /* Some versions of localtime have a bug. They cache the value of the time
1658 zone rather than looking it up every time. Since localtime() is
1659 called to bolt the undumping time into the undumped emacs, this
1660 results in localtime ignoring the TZ environment variable.
1661 This flushes the new TZ value into localtime. */
1663 #endif /* defined (LOCALTIME_CACHE) */
1665 /* Enter editor command loop. This never returns. */
1671 /* Sort the args so we can find the most important ones
1672 at the beginning of argv. */
1674 /* First, here's a table of all the standard options. */
1676 struct standard_args
1684 struct standard_args standard_args
[] =
1686 { "-version", "--version", 150, 0 },
1688 { "-nl", "--no-shared-memory", 140, 0 },
1691 { "-map", "--map-data", 130, 0 },
1693 { "-t", "--terminal", 120, 1 },
1694 { "-nw", "--no-window-system", 110, 0 },
1695 { "-nw", "--no-windows", 110, 0 },
1696 { "-batch", "--batch", 100, 0 },
1697 { "-script", "--script", 100, 1 },
1698 { "-help", "--help", 90, 0 },
1699 { "-no-unibyte", "--no-unibyte", 83, 0 },
1700 { "-multibyte", "--multibyte", 82, 0 },
1701 { "-unibyte", "--unibyte", 81, 0 },
1702 { "-no-multibyte", "--no-multibyte", 80, 0 },
1703 { "-nl", "--no-loadup", 70, 0 },
1704 /* -d must come last before the options handled in startup.el. */
1705 { "-d", "--display", 60, 1 },
1706 { "-display", 0, 60, 1 },
1707 /* Now for the options handled in startup.el. */
1708 { "-q", "--no-init-file", 50, 0 },
1709 { "-no-init-file", 0, 50, 0 },
1710 { "-no-site-file", "--no-site-file", 40, 0 },
1711 { "-no-splash", "--no-splash", 40, 0 },
1712 { "-u", "--user", 30, 1 },
1713 { "-user", 0, 30, 1 },
1714 { "-debug-init", "--debug-init", 20, 0 },
1715 { "-i", "--icon-type", 15, 0 },
1716 { "-itype", 0, 15, 0 },
1717 { "-iconic", "--iconic", 15, 0 },
1718 { "-bg", "--background-color", 10, 1 },
1719 { "-background", 0, 10, 1 },
1720 { "-fg", "--foreground-color", 10, 1 },
1721 { "-foreground", 0, 10, 1 },
1722 { "-bd", "--border-color", 10, 1 },
1723 { "-bw", "--border-width", 10, 1 },
1724 { "-ib", "--internal-border", 10, 1 },
1725 { "-ms", "--mouse-color", 10, 1 },
1726 { "-cr", "--cursor-color", 10, 1 },
1727 { "-fn", "--font", 10, 1 },
1728 { "-font", 0, 10, 1 },
1729 { "-fs", "--fullscreen", 10, 0 },
1730 { "-fw", "--fullwidth", 10, 0 },
1731 { "-fh", "--fullheight", 10, 0 },
1732 { "-g", "--geometry", 10, 1 },
1733 { "-geometry", 0, 10, 1 },
1734 { "-T", "--title", 10, 1 },
1735 { "-title", 0, 10, 1 },
1736 { "-name", "--name", 10, 1 },
1737 { "-xrm", "--xrm", 10, 1 },
1738 { "-r", "--reverse-video", 5, 0 },
1740 { "-reverse", 0, 5, 0 },
1741 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1742 { "-vb", "--vertical-scroll-bars", 5, 0 },
1743 { "-color", "--color", 5, 0},
1744 /* These have the same priority as ordinary file name args,
1745 so they are not reordered with respect to those. */
1746 { "-L", "--directory", 0, 1 },
1747 { "-directory", 0, 0, 1 },
1748 { "-l", "--load", 0, 1 },
1749 { "-load", 0, 0, 1 },
1750 { "-f", "--funcall", 0, 1 },
1751 { "-funcall", 0, 0, 1 },
1752 { "-eval", "--eval", 0, 1 },
1753 { "-execute", "--execute", 0, 1 },
1754 { "-find-file", "--find-file", 0, 1 },
1755 { "-visit", "--visit", 0, 1 },
1756 { "-file", "--file", 0, 1 },
1757 { "-insert", "--insert", 0, 1 },
1758 /* This should be processed after ordinary file name args and the like. */
1759 { "-kill", "--kill", -10, 0 },
1762 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1763 so that the highest priority ones come first.
1764 Do not change the order of elements of equal priority.
1765 If an option takes an argument, keep it and its argument together.
1767 If an option that takes no argument appears more
1768 than once, eliminate all but one copy of it. */
1771 sort_args (argc
, argv
)
1775 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1776 /* For each element of argv,
1777 the corresponding element of options is:
1778 0 for an option that takes no arguments,
1779 1 for an option that takes one argument, etc.
1780 -1 for an ordinary non-option argument. */
1781 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1782 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1784 int incoming_used
= 1;
1788 /* Categorize all the options,
1789 and figure out which argv elts are option arguments. */
1790 for (from
= 1; from
< argc
; from
++)
1794 if (argv
[from
][0] == '-')
1799 /* If we have found "--", don't consider
1800 any more arguments as options. */
1801 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1803 /* Leave the "--", and everything following it, at the end. */
1804 for (; from
< argc
; from
++)
1806 priority
[from
] = -100;
1812 /* Look for a match with a known old-fashioned option. */
1813 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1814 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1816 options
[from
] = standard_args
[i
].nargs
;
1817 priority
[from
] = standard_args
[i
].priority
;
1818 if (from
+ standard_args
[i
].nargs
>= argc
)
1819 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1820 from
+= standard_args
[i
].nargs
;
1824 /* Look for a match with a known long option.
1825 MATCH is -1 if no match so far, -2 if two or more matches so far,
1826 >= 0 (the table index of the match) if just one match so far. */
1827 if (argv
[from
][1] == '-')
1830 thislen
= strlen (argv
[from
]);
1831 equals
= index (argv
[from
], '=');
1833 thislen
= equals
- argv
[from
];
1836 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1837 if (standard_args
[i
].longname
1838 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1847 /* If we found exactly one match, use that. */
1850 options
[from
] = standard_args
[match
].nargs
;
1851 priority
[from
] = standard_args
[match
].priority
;
1852 /* If --OPTION=VALUE syntax is used,
1853 this option uses just one argv element. */
1856 if (from
+ options
[from
] >= argc
)
1857 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1858 from
+= options
[from
];
1865 /* Copy the arguments, in order of decreasing priority, to NEW. */
1867 while (incoming_used
< argc
)
1870 int best_priority
= -9999;
1872 /* Find the highest priority remaining option.
1873 If several have equal priority, take the first of them. */
1874 for (from
= 1; from
< argc
; from
++)
1876 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1878 best_priority
= priority
[from
];
1881 /* Skip option arguments--they are tied to the options. */
1882 if (options
[from
] > 0)
1883 from
+= options
[from
];
1889 /* Copy the highest priority remaining option, with its args, to NEW.
1890 Unless it is a duplicate of the previous one. */
1891 if (! (options
[best
] == 0
1892 && ! strcmp (new[to
- 1], argv
[best
])))
1894 new[to
++] = argv
[best
];
1895 for (i
= 0; i
< options
[best
]; i
++)
1896 new[to
++] = argv
[best
+ i
+ 1];
1899 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1901 /* Clear out this option in ARGV. */
1903 for (i
= 0; i
< options
[best
]; i
++)
1904 argv
[best
+ i
+ 1] = 0;
1907 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1911 bcopy (new, argv
, sizeof (char *) * argc
);
1918 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1919 doc
: /* Exit the Emacs job and kill it.
1920 If ARG is an integer, return ARG as the exit program code.
1921 If ARG is a string, stuff it as keyboard input.
1923 The value of `kill-emacs-hook', if not void,
1924 is a list of functions (of no args),
1925 all of which are called before Emacs is actually killed. */)
1929 struct gcpro gcpro1
;
1936 if (!NILP (Vrun_hooks
) && !noninteractive
)
1937 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1941 /* Is it really necessary to do this deassign
1942 when we are going to exit anyway? */
1947 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1949 /* If we have an auto-save list file,
1950 kill it because we are exiting Emacs deliberately (not crashing).
1951 Do it after shut_down_emacs, which does an auto-save. */
1952 if (STRINGP (Vauto_save_list_file_name
))
1953 unlink (SDATA (Vauto_save_list_file_name
));
1955 exit (INTEGERP (arg
) ? XINT (arg
)
1966 /* Perform an orderly shutdown of Emacs. Autosave any modified
1967 buffers, kill any child processes, clean up the terminal modes (if
1968 we're in the foreground), and other stuff like that. Don't perform
1969 any redisplay; this may be called when Emacs is shutting down in
1970 the background, or after its X connection has died.
1972 If SIG is a signal number, print a message for it.
1974 This is called by fatal signal handlers, X protocol error handlers,
1978 shut_down_emacs (sig
, no_x
, stuff
)
1982 /* Prevent running of hooks from now on. */
1985 /* If we are controlling the terminal, reset terminal modes. */
1986 #ifdef EMACS_HAVE_TTY_PGRP
1988 int pgrp
= EMACS_GETPGRP (0);
1991 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1994 reset_all_sys_modes ();
1995 if (sig
&& sig
!= SIGTERM
)
1996 fprintf (stderr
, "Fatal error (%d)", sig
);
2001 reset_all_sys_modes ();
2004 stuff_buffered_input (stuff
);
2006 kill_buffer_processes (Qnil
);
2007 Fdo_auto_save (Qt
, Qnil
);
2009 #ifdef CLASH_DETECTION
2010 unlock_all_files ();
2014 kill_vms_processes ();
2017 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2018 #ifdef HAVE_X_WINDOWS
2019 /* It's not safe to call intern here. Maybe we are crashing. */
2020 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2021 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2022 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2024 Fx_close_current_connection ();
2025 #endif /* HAVE_X_WINDOWS */
2029 /* There is a tendency for a SIGIO signal to arrive within exit,
2030 and cause a SIGHUP because the input descriptor is already closed. */
2032 signal (SIGIO
, SIG_IGN
);
2039 /* Do this only if terminating normally, we want glyph matrices
2040 etc. in a core dump. */
2041 if (sig
== 0 || sig
== SIGTERM
)
2043 check_glyph_memory ();
2044 check_message_stack ();
2058 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2059 doc
: /* Dump current state of Emacs into data file FILENAME.
2060 This function exists on systems that use HAVE_SHM. */)
2062 Lisp_Object filename
;
2064 extern char my_edata
[];
2068 CHECK_STRING (filename
);
2069 filename
= Fexpand_file_name (filename
, Qnil
);
2072 Vpurify_flag
= Qnil
;
2075 /* Tell malloc where start of impure now is. */
2076 /* Also arrange for warnings when nearly out of space. */
2077 #ifndef SYSTEM_MALLOC
2078 memory_warnings (my_edata
, malloc_warning
);
2080 map_out_data (SDATA (filename
));
2087 #else /* not HAVE_SHM */
2089 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2090 doc
: /* Dump current state of Emacs into executable file FILENAME.
2091 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2092 This is used in the file `loadup.el' when building Emacs.
2094 You must run Emacs in batch mode in order to dump it. */)
2096 Lisp_Object filename
, symfile
;
2098 extern char my_edata
[];
2101 int count
= SPECPDL_INDEX ();
2105 if (! noninteractive
)
2106 error ("Dumping Emacs works only in batch mode");
2108 /* Bind `command-line-processed' to nil before dumping,
2109 so that the dumped Emacs will process its command line
2110 and set up to work with X windows if appropriate. */
2111 symbol
= intern ("command-line-processed");
2112 specbind (symbol
, Qnil
);
2114 CHECK_STRING (filename
);
2115 filename
= Fexpand_file_name (filename
, Qnil
);
2116 if (!NILP (symfile
))
2118 CHECK_STRING (symfile
);
2119 if (SCHARS (symfile
))
2120 symfile
= Fexpand_file_name (symfile
, Qnil
);
2124 Vpurify_flag
= Qnil
;
2127 set_time_zone_rule (dump_tz
);
2128 #ifndef LOCALTIME_CACHE
2129 /* Force a tz reload, since set_time_zone_rule doesn't. */
2136 mapout_data (SDATA (filename
));
2138 /* Tell malloc where start of impure now is. */
2139 /* Also arrange for warnings when nearly out of space. */
2140 #ifndef SYSTEM_MALLOC
2142 /* On Windows, this was done before dumping, and that once suffices.
2143 Meanwhile, my_edata is not valid on Windows. */
2144 memory_warnings (my_edata
, malloc_warning
);
2145 #endif /* not WINDOWSNT */
2147 #ifdef DOUG_LEA_MALLOC
2148 malloc_state_ptr
= malloc_get_state ();
2151 #ifdef USE_MMAP_FOR_BUFFERS
2154 unexec (SDATA (filename
),
2155 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2156 #ifdef USE_MMAP_FOR_BUFFERS
2159 #ifdef DOUG_LEA_MALLOC
2160 free (malloc_state_ptr
);
2162 #endif /* not VMS */
2166 return unbind_to (count
, Qnil
);
2169 #endif /* not HAVE_SHM */
2171 #endif /* not CANNOT_DUMP */
2174 /* Recover from setlocale (LC_ALL, ""). */
2178 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2179 so that numbers are read and printed properly for Emacs Lisp. */
2180 setlocale (LC_NUMERIC
, "C");
2183 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2186 synchronize_locale (category
, plocale
, desired_locale
)
2188 Lisp_Object
*plocale
;
2189 Lisp_Object desired_locale
;
2191 if (! EQ (*plocale
, desired_locale
))
2193 *plocale
= desired_locale
;
2194 setlocale (category
, (STRINGP (desired_locale
)
2195 ? (char *)(SDATA (desired_locale
))
2200 /* Set system time locale to match Vsystem_time_locale, if possible. */
2202 synchronize_system_time_locale ()
2204 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2205 Vsystem_time_locale
);
2208 /* Set system messages locale to match Vsystem_messages_locale, if
2211 synchronize_system_messages_locale ()
2214 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2215 Vsystem_messages_locale
);
2218 #endif /* HAVE_SETLOCALE */
2225 decode_env_path (evarname
, defalt
)
2226 char *evarname
, *defalt
;
2228 register char *path
, *p
;
2229 Lisp_Object lpath
, element
, tem
;
2231 /* It's okay to use getenv here, because this function is only used
2232 to initialize variables when Emacs starts up, and isn't called
2235 path
= (char *) getenv (evarname
);
2241 /* Ensure values from the environment use the proper directory separator. */
2244 p
= alloca (strlen (path
) + 1);
2248 if ('/' == DIRECTORY_SEP
)
2249 dostounix_filename (path
);
2251 unixtodos_filename (path
);
2257 p
= index (path
, SEPCHAR
);
2258 if (!p
) p
= path
+ strlen (path
);
2259 element
= (p
- path
? make_string (path
, p
- path
)
2260 : build_string ("."));
2262 /* Add /: to the front of the name
2263 if it would otherwise be treated as magic. */
2264 tem
= Ffind_file_name_handler (element
, Qt
);
2266 /* However, if the handler says "I'm safe",
2267 don't bother adding /:. */
2271 prop
= Fget (tem
, intern ("safe-magic"));
2277 element
= concat2 (build_string ("/:"), element
);
2279 lpath
= Fcons (element
, lpath
);
2285 return Fnreverse (lpath
);
2291 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2292 staticpro (&Qfile_name_handler_alist
);
2296 defsubr (&Sdump_emacs_data
);
2298 defsubr (&Sdump_emacs
);
2302 defsubr (&Skill_emacs
);
2304 defsubr (&Sinvocation_name
);
2305 defsubr (&Sinvocation_directory
);
2307 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2308 doc
: /* Args passed by shell to Emacs, as a list of strings.
2309 Many arguments are deleted from the list as they are processed. */);
2311 DEFVAR_LISP ("system-type", &Vsystem_type
,
2312 doc
: /* Value is symbol indicating type of operating system you are using. */);
2313 Vsystem_type
= intern (SYSTEM_TYPE
);
2315 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2316 doc
: /* Value is string indicating configuration Emacs was built for.
2317 On MS-Windows, the value reflects the OS flavor and version on which
2318 Emacs is running. */);
2319 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2321 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2322 doc
: /* String containing the configuration options Emacs was built with. */);
2323 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2325 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2326 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2328 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2329 doc
: /* Hook to be run when kill-emacs is called.
2330 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2331 in other similar situations), functions placed on this hook should not
2332 expect to be able to interact with the user. To ask for confirmation,
2333 see `kill-emacs-query-functions' instead.
2335 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2336 Vkill_emacs_hook
= Qnil
;
2338 empty_string
= build_string ("");
2339 staticpro (&empty_string
);
2342 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
2343 doc
: /* Hook to be run whenever emacs receives a USR1 signal. */);
2344 Vsignal_USR1_hook
= Qnil
;
2346 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
2347 doc
: /* Hook to be run whenever emacs receives a USR2 signal. */);
2348 Vsignal_USR2_hook
= Qnil
;
2353 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2354 doc
: /* Priority for Emacs to run at.
2355 This value is effective only if set before Emacs is dumped,
2356 and only if the Emacs executable is installed with setuid to permit
2357 it to change priority. (Emacs sets its uid back to the real uid.)
2358 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2359 before you compile Emacs, to enable the code for this feature. */);
2362 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2363 doc
: /* The directory separator in search paths, as a string. */);
2366 Vpath_separator
= make_string (&c
, 1);
2369 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2370 doc
: /* The program name that was used to run Emacs.
2371 Any directory names are omitted. */);
2373 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2374 doc
: /* The directory in which the Emacs executable was found, to run it.
2375 The value is nil if that directory's name is not known. */);
2377 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2378 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2379 This is non-nil when we can't find those directories in their standard
2380 installed locations, but we can find them
2381 near where the Emacs executable was found. */);
2382 Vinstallation_directory
= Qnil
;
2384 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2385 doc
: /* System locale for messages. */);
2386 Vsystem_messages_locale
= Qnil
;
2388 DEFVAR_LISP ("previous-system-messages-locale",
2389 &Vprevious_system_messages_locale
,
2390 doc
: /* Most recently used system locale for messages. */);
2391 Vprevious_system_messages_locale
= Qnil
;
2393 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2394 doc
: /* System locale for time. */);
2395 Vsystem_time_locale
= Qnil
;
2397 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2398 doc
: /* Most recently used system locale for time. */);
2399 Vprevious_system_time_locale
= Qnil
;
2402 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2403 (do not change this comment) */