1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2012
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
30 #include <ignore-value.h>
34 #ifdef HAVE_WINDOW_SYSTEM
36 #endif /* HAVE_WINDOW_SYSTEM */
40 #include <windows.h> /* just for w32.h */
42 #include "w32heap.h" /* for prototype of sbrk */
45 #ifdef NS_IMPL_GNUSTEP
46 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
47 #include <GNUstepBase/GSConfig.h>
51 #include "intervals.h"
52 #include "character.h"
58 #include "blockinput.h"
59 #include "syssignal.h"
62 #include "termhooks.h"
70 #if (defined PROFILING \
71 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
72 # include <sys/gmon.h>
73 extern void moncontrol (int mode
);
82 #include <sys/resource.h>
85 #ifdef HAVE_PERSONALITY_LINUX32
86 #include <sys/personality.h>
93 static const char emacs_version
[] = VERSION
;
94 static const char emacs_copyright
[] = COPYRIGHT
;
96 /* Empty lisp strings. To avoid having to build any others. */
97 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
99 /* Set after Emacs has started up the first time.
100 Prevents reinitialization of the Lisp world and keymaps
101 on subsequent starts. */
105 extern void unexec_init_emacs_zone (void);
108 #ifdef DOUG_LEA_MALLOC
109 /* Preserves a pointer to the memory allocated that copies that
110 static data inside glibc's malloc. */
111 static void *malloc_state_ptr
;
112 /* From glibc, a routine that returns a copy of the malloc internal state. */
113 extern void *malloc_get_state (void);
114 /* From glibc, a routine that overwrites the malloc internal state. */
115 extern int malloc_set_state (void*);
116 /* True if the MALLOC_CHECK_ environment variable was set while
117 dumping. Used to work around a bug in glibc's malloc. */
118 static bool malloc_using_checking
;
121 Lisp_Object Qfile_name_handler_alist
;
123 Lisp_Object Qrisky_local_variable
;
125 Lisp_Object Qkill_emacs
;
127 /* If true, Emacs should not attempt to use a window-specific code,
128 but instead should use the virtual terminal under which it was started. */
129 bool inhibit_window_system
;
131 /* If true, a filter or a sentinel is running. Tested to save the match
132 data on the first attempt to change it inside asynchronous code. */
133 bool running_asynch_code
;
135 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
136 /* If true, -d was specified, meaning we're using some window system. */
140 /* An address near the bottom of the stack.
141 Tells GC how to save a copy of the stack. */
144 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
145 /* The address where the heap starts (from the first sbrk (0) call). */
146 static void *my_heap_start
;
150 /* The gap between BSS end and heap start as far as we can tell. */
151 static uprintmax_t heap_bss_diff
;
154 /* True means running Emacs without interactive terminal. */
157 /* True means remove site-lisp directories from load-path. */
160 /* Name for the server started by the daemon.*/
161 static char *daemon_name
;
163 /* Pipe used to send exit notification to the daemon parent at
167 /* Save argv and argc. */
171 static void sort_args (int argc
, char **argv
);
172 static void syms_of_emacs (void);
174 /* MSVC needs each string be shorter than 2048 bytes, so the usage
175 strings below are split to not overflow this limit. */
177 Usage: %s [OPTION-OR-FILENAME]...\n\
179 Run Emacs, the extensible, customizable, self-documenting real-time\n\
180 display editor. The recommended way to start Emacs for normal editing\n\
181 is with no options at all.\n\
183 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
184 read the main documentation for these command-line arguments.\n\
186 Initialization options:\n\
188 --batch do not do interactive display; implies -q\n\
189 --chdir DIR change to directory DIR\n\
190 --daemon start a server in the background\n\
191 --debug-init enable Emacs Lisp debugger for init file\n\
192 --display, -d DISPLAY use X server DISPLAY\n\
193 --no-desktop do not load a saved desktop\n\
194 --no-init-file, -q load neither ~/.emacs nor default.el\n\
195 --no-shared-memory, -nl do not use shared memory\n\
196 --no-site-file do not load site-start.el\n\
197 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
198 --no-splash do not display a splash screen on startup\n\
199 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
200 --quick, -Q equivalent to:\n\
201 -q --no-site-file --no-site-lisp --no-splash\n\
202 --script FILE run FILE as an Emacs Lisp script\n\
203 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
204 --user, -u USER load ~USER/.emacs instead of your own\n\
210 FILE visit FILE using find-file\n\
211 +LINE go to line LINE in next FILE\n\
212 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
213 --directory, -L DIR add DIR to variable load-path\n\
214 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
215 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
216 --file FILE visit FILE using find-file\n\
217 --find-file FILE visit FILE using find-file\n\
218 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
219 --insert FILE insert contents of FILE into current buffer\n\
220 --kill exit without asking for confirmation\n\
221 --load, -l FILE load Emacs Lisp FILE using the load function\n\
222 --visit FILE visit FILE using find-file\n\
228 --background-color, -bg COLOR window background color\n\
229 --basic-display, -D disable many display features;\n\
230 used for debugging Emacs\n\
231 --border-color, -bd COLOR main border color\n\
232 --border-width, -bw WIDTH width of main border\n\
233 --color, --color=MODE override color mode for character terminals;\n\
234 MODE defaults to `auto', and\n\
235 can also be `never', `always',\n\
236 or a mode name like `ansi8'\n\
237 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
238 --font, -fn FONT default font; must be fixed-width\n\
239 --foreground-color, -fg COLOR window foreground color\n\
240 --fullheight, -fh make the first frame high as the screen\n\
241 --fullscreen, -fs make the first frame fullscreen\n\
242 --fullwidth, -fw make the first frame wide as the screen\n\
243 --maximized, -mm make the first frame maximized\n\
244 --geometry, -g GEOMETRY window geometry\n\
245 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
246 --iconic start Emacs in iconified state\n\
247 --internal-border, -ib WIDTH width between text and main border\n\
248 --line-spacing, -lsp PIXELS additional space to put between lines\n\
249 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
250 --name NAME title for initial Emacs frame\n\
251 --no-blinking-cursor, -nbc disable blinking cursor\n\
252 --reverse-video, -r, -rv switch foreground and background\n\
253 --title, -T TITLE title for initial Emacs frame\n\
254 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
255 --xrm XRESOURCES set additional X resources\n\
256 --parent-id XID set parent window\n\
257 --help display this help and exit\n\
258 --version output version information and exit\n\
262 You can generally also specify long option names with a single -; for\n\
263 example, -batch as well as --batch. You can use any unambiguous\n\
264 abbreviation for a --option.\n\
266 Various environment variables and window system resources also affect\n\
267 Emacs' operation. See the main documentation.\n\
269 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
270 section of the Emacs manual or the file BUGS.\n"
273 /* True if handling a fatal error already. */
274 bool fatal_error_in_progress
;
277 /* NS autrelease pool, for memory management. */
278 static void *ns_pool
;
283 /* Report a fatal error due to signal SIG, output a backtrace of at
284 most BACKTRACE_LIMIT lines, and exit. */
286 terminate_due_to_signal (int sig
, int backtrace_limit
)
288 totally_unblock_input ();
290 /* If fatal error occurs in code below, avoid infinite recursion. */
291 if (! fatal_error_in_progress
)
293 fatal_error_in_progress
= 1;
295 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
296 Fkill_emacs (make_number (sig
));
298 shut_down_emacs (sig
, Qnil
);
299 emacs_backtrace (backtrace_limit
);
302 /* Signal the same code; this time it will really be fatal.
303 Since we're in a signal handler, the signal is blocked, so we
304 have to unblock it if we want to really receive it. */
308 sigemptyset (&unblocked
);
309 sigaddset (&unblocked
, sig
);
310 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
316 /* This shouldn't be executed, but it prevents a warning. */
322 /* Handler for SIGDANGER. */
324 handle_danger_signal (int sig
)
326 malloc_warning ("Operating system warns that virtual memory is running low.\n");
328 /* It might be unsafe to call do_auto_save now. */
329 force_auto_save_soon ();
333 deliver_danger_signal (int sig
)
335 deliver_process_signal (sig
, handle_danger_signal
);
339 /* Code for dealing with Lisp access to the Unix command line. */
342 init_cmdargs (int argc
, char **argv
, int skip_args
)
345 Lisp_Object name
, dir
, handler
;
346 ptrdiff_t count
= SPECPDL_INDEX ();
347 Lisp_Object raw_name
;
352 raw_name
= build_string (argv
[0]);
354 /* Add /: to the front of the name
355 if it would otherwise be treated as magic. */
356 handler
= Ffind_file_name_handler (raw_name
, Qt
);
357 if (! NILP (handler
))
358 raw_name
= concat2 (build_string ("/:"), raw_name
);
360 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
361 Vinvocation_directory
= Ffile_name_directory (raw_name
);
363 /* If we got no directory in argv[0], search PATH to find where
364 Emacs actually came from. */
365 if (NILP (Vinvocation_directory
))
368 int yes
= openp (Vexec_path
, Vinvocation_name
,
369 Vexec_suffixes
, &found
, make_number (X_OK
));
372 /* Add /: to the front of the name
373 if it would otherwise be treated as magic. */
374 handler
= Ffind_file_name_handler (found
, Qt
);
375 if (! NILP (handler
))
376 found
= concat2 (build_string ("/:"), found
);
377 Vinvocation_directory
= Ffile_name_directory (found
);
381 if (!NILP (Vinvocation_directory
)
382 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
383 /* Emacs was started with relative path, like ./emacs.
385 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
387 Vinstallation_directory
= Qnil
;
389 if (!NILP (Vinvocation_directory
))
391 dir
= Vinvocation_directory
;
393 /* If we are running from the build directory, set DIR to the
394 src subdirectory of the Emacs tree, like on Posix
396 if (SBYTES (dir
) > sizeof ("/i386/") - 1
397 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
399 dir
= Fexpand_file_name (build_string ("../.."), dir
);
400 #else /* !WINDOWSNT */
402 name
= Fexpand_file_name (Vinvocation_name
, dir
);
405 Lisp_Object tem
, lib_src_exists
;
406 Lisp_Object etc_exists
, info_exists
;
408 /* See if dir contains subdirs for use by Emacs.
409 Check for the ones that would exist in a build directory,
410 not including lisp and info. */
411 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
412 lib_src_exists
= Ffile_exists_p (tem
);
415 /* MSDOS installations frequently remove lib-src, but we still
416 must set installation-directory, or else info won't find
417 its files (it uses the value of installation-directory). */
418 tem
= Fexpand_file_name (build_string ("info"), dir
);
419 info_exists
= Ffile_exists_p (tem
);
424 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
426 tem
= Fexpand_file_name (build_string ("etc"), dir
);
427 etc_exists
= Ffile_exists_p (tem
);
428 if (!NILP (etc_exists
))
430 Vinstallation_directory
431 = Ffile_name_as_directory (dir
);
436 /* See if dir's parent contains those subdirs. */
437 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
438 lib_src_exists
= Ffile_exists_p (tem
);
442 /* See the MSDOS commentary above. */
443 tem
= Fexpand_file_name (build_string ("../info"), dir
);
444 info_exists
= Ffile_exists_p (tem
);
449 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
451 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
452 etc_exists
= Ffile_exists_p (tem
);
453 if (!NILP (etc_exists
))
455 tem
= Fexpand_file_name (build_string (".."), dir
);
456 Vinstallation_directory
457 = Ffile_name_as_directory (tem
);
462 /* If the Emacs executable is actually a link,
463 next try the dir that the link points into. */
464 tem
= Ffile_symlink_p (name
);
467 name
= Fexpand_file_name (tem
, dir
);
468 dir
= Ffile_name_directory (name
);
475 Vcommand_line_args
= Qnil
;
477 for (i
= argc
- 1; i
>= 0; i
--)
479 if (i
== 0 || i
> skip_args
)
480 /* For the moment, we keep arguments as is in unibyte strings.
481 They are decoded in the function command-line after we know
482 locale-coding-system. */
484 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
488 unbind_to (count
, Qnil
);
491 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
492 doc
: /* Return the program name that was used to run Emacs.
493 Any directory names are omitted. */)
496 return Fcopy_sequence (Vinvocation_name
);
499 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
501 doc
: /* Return the directory name in which the Emacs executable was located. */)
504 return Fcopy_sequence (Vinvocation_directory
);
509 /* A valid but unlikely value for the TZ environment value.
510 It is OK (though a bit slower) if the user actually chooses this value. */
511 static char dump_tz
[] = "UtC0";
514 #ifndef ORDINARY_LINK
515 /* We don't include crtbegin.o and crtend.o in the link,
516 so these functions and variables might be missed.
517 Provide dummy definitions to avoid error.
518 (We don't have any real constructors or destructors.) */
521 /* Define a dummy function F. Declare F too, to pacify gcc
522 -Wmissing-prototypes. */
523 #define DEFINE_DUMMY_FUNCTION(f) \
524 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
526 #ifndef GCC_CTORS_IN_LIBC
527 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
528 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
529 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
530 /* GNU/Linux has a bug in its library; avoid an error. */
532 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
534 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
535 #endif /* GCC_CTORS_IN_LIBC */
536 DEFINE_DUMMY_FUNCTION (__main
)
537 #endif /* __GNUC__ */
538 #endif /* ORDINARY_LINK */
540 /* Test whether the next argument in ARGV matches SSTR or a prefix of
541 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
542 (the argument is supposed to have a value) store in *VALPTR either
543 the next argument or the portion of this one after the equal sign.
544 ARGV is read starting at position *SKIPPTR; this index is advanced
545 by the number of arguments used.
547 Too bad we can't just use getopt for all of this, but we don't have
548 enough information to do it right. */
551 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
552 int minlen
, char **valptr
, int *skipptr
)
558 /* Don't access argv[argc]; give up in advance. */
559 if (argc
<= *skipptr
+ 1)
562 arg
= argv
[*skipptr
+1];
565 if (strcmp (arg
, sstr
) == 0)
569 *valptr
= argv
[*skipptr
+2];
576 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
577 ? p
- arg
: strlen (arg
));
578 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
580 else if (valptr
== NULL
)
591 else if (argv
[*skipptr
+2] != NULL
)
593 *valptr
= argv
[*skipptr
+2];
603 #ifdef DOUG_LEA_MALLOC
605 /* malloc can be invoked even before main (e.g. by the dynamic
606 linker), so the dumped malloc state must be restored as early as
607 possible using this special hook. */
610 malloc_initialize_hook (void)
614 if (!malloc_using_checking
)
615 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
616 ignored if the heap to be restored was constructed without
617 malloc checking. Can't use unsetenv, since that calls malloc. */
621 for (p
= environ
; p
&& *p
; p
++)
622 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
631 malloc_set_state (malloc_state_ptr
);
632 #ifndef XMALLOC_OVERRUN_CHECK
633 free (malloc_state_ptr
);
638 if (my_heap_start
== 0)
639 my_heap_start
= sbrk (0);
640 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
644 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
646 #endif /* DOUG_LEA_MALLOC */
651 main (int argc
, char **argv
)
656 char stack_bottom_variable
;
657 bool do_initial_setlocale
;
660 #ifdef HAVE_SETRLIMIT
675 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
676 /* This is used by the Cygwin build. */
677 setenv ("G_SLICE", "always-malloc", 1);
683 extern char my_endbss
[];
684 extern char *my_endbss_static
;
686 if (my_heap_start
== 0)
687 my_heap_start
= sbrk (0);
689 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
693 #ifdef RUN_TIME_REMAP
695 run_time_remap (argv
[0]);
698 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
701 unexec_init_emacs_zone ();
704 sort_args (argc
, argv
);
706 while (argv
[argc
]) argc
++;
708 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
710 const char *version
, *copyright
;
713 Lisp_Object tem
, tem2
;
714 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
715 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
718 fprintf (stderr
, "Invalid value of `emacs-version'\n");
723 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
728 version
= SSDATA (tem
);
729 copyright
= SSDATA (tem2
);
734 version
= emacs_version
;
735 copyright
= emacs_copyright
;
737 printf ("GNU Emacs %s\n", version
);
738 printf ("%s\n", copyright
);
739 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
740 printf ("You may redistribute copies of Emacs\n");
741 printf ("under the terms of the GNU General Public License.\n");
742 printf ("For more information about these matters, ");
743 printf ("see the file named COPYING.\n");
747 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
748 if (chdir (ch_to_dir
) == -1)
750 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
751 argv
[0], ch_to_dir
, strerror (errno
));
755 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
756 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
758 #ifdef HAVE_PERSONALITY_LINUX32
759 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
761 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
762 /* Set this so we only do this once. */
765 /* A flag to turn off address randomization which is introduced
766 in linux kernel shipped with fedora core 4 */
767 #define ADD_NO_RANDOMIZE 0x0040000
768 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
769 #undef ADD_NO_RANDOMIZE
771 execvp (argv
[0], argv
);
773 /* If the exec fails, try to dump anyway. */
776 #endif /* HAVE_PERSONALITY_LINUX32 */
778 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
779 /* Extend the stack space available.
780 Don't do that if dumping, since some systems (e.g. DJGPP)
781 might define a smaller stack limit at that time. */
784 && (!noninteractive
|| initialized
)
786 && !getrlimit (RLIMIT_STACK
, &rlim
))
789 extern size_t re_max_failures
;
790 /* Approximate the amount regex.c needs per unit of re_max_failures. */
791 int ratio
= 20 * sizeof (char *);
792 /* Then add 33% to cover the size of the smaller stacks that regex.c
793 successively allocates and discards, on its way to the maximum. */
795 /* Add in some extra to cover
796 what we're likely to use for other reasons. */
797 newlim
= re_max_failures
* ratio
+ 200000;
799 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
800 stack allocation routine for new process that the allocation
801 fails if stack limit is not on page boundary. So, round up the
802 new limit to page boundary. */
803 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
805 if (newlim
> rlim
.rlim_max
)
807 newlim
= rlim
.rlim_max
;
808 /* Don't let regex.c overflow the stack we have. */
809 re_max_failures
= (newlim
- 200000) / ratio
;
811 if (rlim
.rlim_cur
< newlim
)
812 rlim
.rlim_cur
= newlim
;
814 setrlimit (RLIMIT_STACK
, &rlim
);
816 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
818 /* Record (approximately) where the stack begins. */
819 stack_bottom
= &stack_bottom_variable
;
823 #ifndef SYSTEM_MALLOC
824 /* Arrange to get warning messages as memory fills up. */
825 memory_warnings (0, malloc_warning
);
827 /* Call malloc at least once, to run malloc_initialize_hook.
828 Also call realloc and free for consistency. */
829 free (realloc (malloc (4), 4));
831 #endif /* not SYSTEM_MALLOC */
833 #if defined (MSDOS) || defined (WINDOWSNT)
834 /* We do all file input/output as binary files. When we need to translate
835 newlines, we do that manually. */
837 #endif /* MSDOS || WINDOWSNT */
840 if (!isatty (fileno (stdin
)))
841 setmode (fileno (stdin
), O_BINARY
);
842 if (!isatty (fileno (stdout
)))
845 setmode (fileno (stdout
), O_BINARY
);
849 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
850 The build procedure uses this while dumping, to ensure that the
851 dumped Emacs does not have its system locale tables initialized,
852 as that might cause screwups when the dumped Emacs starts up. */
854 char *lc_all
= getenv ("LC_ALL");
855 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
858 /* Set locale now, so that initial error messages are localized properly.
859 fixup_locale must wait until later, since it builds strings. */
860 if (do_initial_setlocale
)
861 setlocale (LC_ALL
, "");
863 inhibit_window_system
= 0;
865 /* Handle the -t switch, which specifies filename to use as terminal. */
869 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
874 result
= emacs_open (term
, O_RDWR
, 0);
875 if (result
< 0 || dup (0) < 0)
877 char *errstring
= strerror (errno
);
878 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
883 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
886 fprintf (stderr
, "Using %s\n", term
);
887 #ifdef HAVE_WINDOW_SYSTEM
888 inhibit_window_system
= 1; /* -t => -nw */
895 /* Command line option --no-windows is deprecated and thus not mentioned
896 in the manual and usage information. */
897 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
898 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
899 inhibit_window_system
= 1;
901 /* Handle the -batch switch, which means don't do interactive display. */
903 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
906 Vundo_outer_limit
= Qnil
;
908 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
910 noninteractive
= 1; /* Set batch mode. */
911 /* Convert --script to -scriptload, un-skip it, and sort again
912 so that it will be handled in proper sequence. */
913 /* FIXME broken for --script=FILE - is that supposed to work? */
914 argv
[skip_args
- 1] = (char *) "-scriptload";
916 sort_args (argc
, argv
);
919 /* Handle the --help option, which gives a usage message. */
920 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
922 printf (USAGE1
, argv
[0], USAGE2
);
928 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
929 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
934 /* Start as a daemon: fork a new child process which will run the
935 rest of the initialization code, then exit.
937 Detaching a daemon requires the following steps:
941 - close the tty file-descriptors
943 We only want to do the last 2 steps once the daemon is ready to
944 serve requests, i.e. after loading .emacs (initialization).
945 OTOH initialization may start subprocesses (e.g. ispell) and these
946 should be run from the proper process (the one that will end up
947 running as daemon) and with the proper "session id" in order for
948 them to keep working after detaching, so fork and setsid need to be
949 performed before initialization.
951 We want to avoid exiting before the server socket is ready, so
952 use a pipe for synchronization. The parent waits for the child
953 to close its end of the pipe (using `daemon-initialized')
955 if (pipe (daemon_pipe
) == -1)
957 fprintf (stderr
, "Cannot pipe!\n");
961 #ifndef NS_IMPL_COCOA
963 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
964 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
965 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
968 #else /* NS_IMPL_COCOA */
969 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
970 forked process: http://developer.apple.com/ReleaseNotes/
971 CoreFoundation/CoreFoundation.html)
972 We mark being in the exec'd process by a daemon name argument of
973 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
974 NAME is the original daemon name, if any. */
975 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
976 f
= fork (); /* in orig */
978 f
= 0; /* in exec'd */
979 #endif /* NS_IMPL_COCOA */
985 /* Close unused writing end of the pipe. */
986 close (daemon_pipe
[1]);
988 /* Just wait for the child to close its end of the pipe. */
991 retval
= read (daemon_pipe
[0], &buf
, 1);
993 while (retval
== -1 && errno
== EINTR
);
997 fprintf (stderr
, "Error reading status from child\n");
1000 else if (retval
== 0)
1002 fprintf (stderr
, "Error: server did not start correctly\n");
1006 close (daemon_pipe
[0]);
1011 fprintf (stderr
, "Cannot fork!\n");
1015 #ifdef NS_IMPL_COCOA
1017 /* In orig process, forked as child, OR in exec'd. */
1018 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1019 { /* In orig, child: now exec w/special daemon name. */
1022 snprintf (fdStr
, sizeof fdStr
,
1023 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1024 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1026 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1028 fprintf (stderr
, "daemon: child name too long\n");
1032 argv
[skip_args
] = fdStr
;
1034 execv (argv
[0], argv
);
1035 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1039 /* In exec'd: parse special dname into pipe and name info. */
1040 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1041 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1043 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1046 dname_arg2
[0] = '\0';
1047 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1049 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1051 #endif /* NS_IMPL_COCOA */
1054 daemon_name
= xstrdup (dname_arg
);
1055 /* Close unused reading end of the pipe. */
1056 close (daemon_pipe
[0]);
1057 /* Make sure that the used end of the pipe is closed on exec, so
1058 that it is not accessible to programs started from .emacs. */
1059 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1065 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1070 if (! noninteractive
)
1072 #if defined (USG5) && defined (INTERRUPT_INPUT)
1075 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1077 extern void malloc_enable_thread (void);
1079 malloc_enable_thread ();
1084 init_signals (dumping
);
1086 noninteractive1
= noninteractive
;
1088 /* Perform basic initializations (not merely interning symbols). */
1095 init_charset_once ();
1096 init_coding_once ();
1097 init_syntax_once (); /* Create standard syntax table. */
1098 init_category_once (); /* Create standard category table. */
1099 /* Must be done before init_buffer. */
1100 init_casetab_once ();
1101 init_buffer_once (); /* Create buffer table and some buffers. */
1102 init_minibuf_once (); /* Create list of minibuffers. */
1103 /* Must precede init_window_once. */
1105 /* Call syms_of_xfaces before init_window_once because that
1106 function creates Vterminal_frame. Termcap frames now use
1107 faces, and the face implementation uses some symbols as
1110 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1111 be better to arrange things not to have this dependency. */
1113 /* Call syms_of_keyboard before init_window_once because
1114 keyboard sets up symbols that include some face names that
1115 the X support will want to use. This can happen when
1116 CANNOT_DUMP is defined. */
1117 syms_of_keyboard ();
1119 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1122 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1124 /* Before syms_of_coding because it initializes Qcharsetp. */
1126 /* Before init_window_once, because it sets up the
1127 Vcoding_system_hash_table. */
1128 syms_of_coding (); /* This should be after syms_of_fileio. */
1130 init_window_once (); /* Init the window system. */
1131 #ifdef HAVE_WINDOW_SYSTEM
1132 init_fringe_once (); /* Swap bitmaps if necessary. */
1133 #endif /* HAVE_WINDOW_SYSTEM */
1138 if (do_initial_setlocale
)
1141 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1142 Vsystem_time_locale
= Vprevious_system_time_locale
;
1147 running_asynch_code
= 0;
1151 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1154 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1157 ns_pool
= ns_alloc_autorelease_pool ();
1158 if (!noninteractive
)
1160 #ifdef NS_IMPL_COCOA
1161 if (skip_args
< argc
)
1163 /* FIXME: Do the right thing if getenv returns NULL, or if
1165 if (!strncmp (argv
[skip_args
], "-psn", 4))
1168 chdir (getenv ("HOME"));
1170 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1173 chdir (getenv ("HOME"));
1178 #endif /* HAVE_NS */
1180 #ifdef HAVE_X_WINDOWS
1181 /* Stupid kludge to catch command-line display spec. We can't
1182 handle this argument entirely in window system dependent code
1183 because we don't even know which window system dependent code
1184 to run until we've recognized this argument. */
1186 char *displayname
= 0;
1187 int count_before
= skip_args
;
1189 /* Skip any number of -d options, but only use the last one. */
1192 int count_before_this
= skip_args
;
1194 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1196 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1201 count_before
= count_before_this
;
1204 /* If we have the form --display=NAME,
1205 convert it into -d name.
1206 This requires inserting a new element into argv. */
1207 if (displayname
&& count_before
< skip_args
)
1209 if (skip_args
== count_before
+ 1)
1211 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1212 (argc
- (count_before
+ 2)) * sizeof *argv
);
1213 argv
[count_before
+ 2] = displayname
;
1216 argv
[count_before
+ 1] = (char *) "-d";
1221 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1222 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1226 /* Don't actually discard this arg. */
1227 skip_args
= count_before
;
1229 #else /* !HAVE_X_WINDOWS */
1232 int count_before
= skip_args
;
1234 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1235 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1238 skip_args
= count_before
;
1242 /* argmatch must not be used after here,
1243 except when building temacs
1244 because the -d argument has not been skipped in skip_args. */
1247 /* Call early 'cause init_environment needs it. */
1249 /* Set defaults for several environment variables. */
1251 init_environment (argc
, argv
, skip_args
);
1258 /* Initialize environment from registry settings. */
1259 init_environment (argv
);
1260 init_ntproc (); /* must precede init_editfns. */
1263 /* Initialize and GC-protect Vinitial_environment and
1264 Vprocess_environment before set_initial_environment fills them
1267 syms_of_callproc ();
1268 /* egetenv is a pretty low-level facility, which may get called in
1269 many circumstances; it seems flimsy to put off initializing it
1270 until calling init_callproc. Do not do it when dumping. */
1272 set_initial_environment ();
1274 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1275 if this is not done. Do it after set_global_environment so that we
1276 don't pollute Vglobal_environment. */
1277 /* Setting LANG here will defeat the startup locale processing... */
1282 init_buffer (); /* Init default directory of main buffer. */
1284 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1285 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1289 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1290 Lisp_Object old_log_max
;
1291 old_log_max
= Vmessage_log_max
;
1292 XSETFASTINT (Vmessage_log_max
, 0);
1293 message_dolog ("", 0, 1, 0);
1294 Vmessage_log_max
= old_log_max
;
1297 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1300 /* Check to see if Emacs has been installed correctly. */
1301 check_windows_init_file ();
1304 /* Intern the names of all standard functions and variables;
1305 define standard keys. */
1309 /* The basic levels of Lisp must come first. Note that
1310 syms_of_data and some others have already been called. */
1316 syms_of_floatfns ();
1319 syms_of_bytecode ();
1321 syms_of_casefiddle ();
1323 syms_of_category ();
1325 syms_of_character ();
1332 syms_of_filelock ();
1335 /* syms_of_keymap (); */
1343 syms_of_terminal ();
1349 syms_of_textprop ();
1350 syms_of_composite ();
1353 #endif /* WINDOWSNT */
1357 #ifdef HAVE_WINDOW_SYSTEM
1360 #endif /* HAVE_WINDOW_SYSTEM */
1361 #ifdef HAVE_X_WINDOWS
1366 syms_of_xsettings ();
1373 #endif /* HAVE_X_WINDOWS */
1384 syms_of_w32select ();
1387 #endif /* HAVE_NTGUI */
1393 syms_of_win16select ();
1400 syms_of_nsselect ();
1402 #endif /* HAVE_NS */
1409 syms_of_dbusbind ();
1410 #endif /* HAVE_DBUS */
1414 #endif /* WINDOWSNT */
1416 keys_of_casefiddle ();
1419 keys_of_keyboard ();
1425 /* Initialization that must be done even if the global variable
1426 initialized is non zero. */
1428 globals_of_w32font ();
1429 globals_of_w32fns ();
1430 globals_of_w32menu ();
1431 globals_of_w32select ();
1432 #endif /* HAVE_NTGUI */
1437 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1438 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1439 init_keyboard (); /* This too must precede init_sys_modes. */
1440 if (!noninteractive
)
1441 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1443 #ifdef HAVE_WINDOW_SYSTEM
1445 #endif /* HAVE_WINDOW_SYSTEM */
1453 /* Handle -l loadup, args passed by Makefile. */
1454 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1455 Vtop_level
= Fcons (intern_c_string ("load"),
1456 Fcons (build_string (file
), Qnil
));
1457 /* Unless next switch is -nl, load "loadup.el" first thing. */
1459 Vtop_level
= Fcons (intern_c_string ("load"),
1460 Fcons (build_string ("loadup.el"), Qnil
));
1467 /* If the execution TZ happens to be the same as the dump TZ,
1468 change it to some other value and then change it back,
1469 to force the underlying implementation to reload the TZ info.
1470 This is needed on implementations that load TZ info from files,
1471 since the TZ file contents may differ between dump and execution. */
1472 char *tz
= getenv ("TZ");
1473 if (tz
&& !strcmp (tz
, dump_tz
))
1483 /* Set up for profiling. This is known to work on FreeBSD,
1484 GNU/Linux and MinGW. It might work on some other systems too.
1485 Give it a try and tell us if it works on your system. To compile
1486 for profiling, use the configure option --enable-profiling. */
1487 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1492 extern unsigned char etext
asm ("etext");
1498 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1507 #ifdef LOCALTIME_CACHE
1508 /* Some versions of localtime have a bug. They cache the value of the time
1509 zone rather than looking it up every time. Since localtime() is
1510 called to bolt the undumping time into the undumped emacs, this
1511 results in localtime ignoring the TZ environment variable.
1512 This flushes the new TZ value into localtime. */
1514 #endif /* defined (LOCALTIME_CACHE) */
1516 /* Enter editor command loop. This never returns. */
1522 /* Sort the args so we can find the most important ones
1523 at the beginning of argv. */
1525 /* First, here's a table of all the standard options. */
1527 struct standard_args
1530 const char *longname
;
1535 static const struct standard_args standard_args
[] =
1537 { "-version", "--version", 150, 0 },
1538 { "-chdir", "--chdir", 130, 1 },
1539 { "-t", "--terminal", 120, 1 },
1540 { "-nw", "--no-window-system", 110, 0 },
1541 { "-nw", "--no-windows", 110, 0 },
1542 { "-batch", "--batch", 100, 0 },
1543 { "-script", "--script", 100, 1 },
1544 { "-daemon", "--daemon", 99, 0 },
1545 { "-help", "--help", 90, 0 },
1546 { "-nl", "--no-loadup", 70, 0 },
1547 { "-nsl", "--no-site-lisp", 65, 0 },
1548 /* -d must come last before the options handled in startup.el. */
1549 { "-d", "--display", 60, 1 },
1550 { "-display", 0, 60, 1 },
1551 /* Now for the options handled in `command-line' (startup.el). */
1552 /* (Note that to imply -nsl, -Q is partially handled here.) */
1553 { "-Q", "--quick", 55, 0 },
1554 { "-quick", 0, 55, 0 },
1555 { "-q", "--no-init-file", 50, 0 },
1556 { "-no-init-file", 0, 50, 0 },
1557 { "-no-site-file", "--no-site-file", 40, 0 },
1558 { "-u", "--user", 30, 1 },
1559 { "-user", 0, 30, 1 },
1560 { "-debug-init", "--debug-init", 20, 0 },
1561 { "-iconic", "--iconic", 15, 0 },
1562 { "-D", "--basic-display", 12, 0},
1563 { "-basic-display", 0, 12, 0},
1564 { "-nbc", "--no-blinking-cursor", 12, 0 },
1565 /* Now for the options handled in `command-line-1' (startup.el). */
1566 { "-nbi", "--no-bitmap-icon", 10, 0 },
1567 { "-bg", "--background-color", 10, 1 },
1568 { "-background", 0, 10, 1 },
1569 { "-fg", "--foreground-color", 10, 1 },
1570 { "-foreground", 0, 10, 1 },
1571 { "-bd", "--border-color", 10, 1 },
1572 { "-bw", "--border-width", 10, 1 },
1573 { "-ib", "--internal-border", 10, 1 },
1574 { "-ms", "--mouse-color", 10, 1 },
1575 { "-cr", "--cursor-color", 10, 1 },
1576 { "-fn", "--font", 10, 1 },
1577 { "-font", 0, 10, 1 },
1578 { "-fs", "--fullscreen", 10, 0 },
1579 { "-fw", "--fullwidth", 10, 0 },
1580 { "-fh", "--fullheight", 10, 0 },
1581 { "-mm", "--maximized", 10, 0 },
1582 { "-g", "--geometry", 10, 1 },
1583 { "-geometry", 0, 10, 1 },
1584 { "-T", "--title", 10, 1 },
1585 { "-title", 0, 10, 1 },
1586 { "-name", "--name", 10, 1 },
1587 { "-xrm", "--xrm", 10, 1 },
1588 { "-parent-id", "--parent-id", 10, 1 },
1589 { "-r", "--reverse-video", 5, 0 },
1591 { "-reverse", 0, 5, 0 },
1592 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1593 { "-vb", "--vertical-scroll-bars", 5, 0 },
1594 { "-color", "--color", 5, 0},
1595 { "-no-splash", "--no-splash", 3, 0 },
1596 { "-no-desktop", "--no-desktop", 3, 0 },
1598 { "-NSAutoLaunch", 0, 5, 1 },
1599 { "-NXAutoLaunch", 0, 5, 1 },
1600 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1601 { "-_NSMachLaunch", 0, 85, 1 },
1602 { "-MachLaunch", 0, 85, 1 },
1603 { "-macosx", 0, 85, 0 },
1604 { "-NSHost", 0, 85, 1 },
1606 /* These have the same priority as ordinary file name args,
1607 so they are not reordered with respect to those. */
1608 { "-L", "--directory", 0, 1 },
1609 { "-directory", 0, 0, 1 },
1610 { "-l", "--load", 0, 1 },
1611 { "-load", 0, 0, 1 },
1612 /* This has no longname, because using --scriptload confuses sort_args,
1613 because then the --script long option seems to match twice; ie
1614 you can't have a long option which is a prefix of another long
1615 option. In any case, this is entirely an internal option. */
1616 { "-scriptload", NULL
, 0, 1 },
1617 { "-f", "--funcall", 0, 1 },
1618 { "-funcall", 0, 0, 1 },
1619 { "-eval", "--eval", 0, 1 },
1620 { "-execute", "--execute", 0, 1 },
1621 { "-find-file", "--find-file", 0, 1 },
1622 { "-visit", "--visit", 0, 1 },
1623 { "-file", "--file", 0, 1 },
1624 { "-insert", "--insert", 0, 1 },
1626 { "-NXOpen", 0, 0, 1 },
1627 { "-NXOpenTemp", 0, 0, 1 },
1628 { "-NSOpen", 0, 0, 1 },
1629 { "-NSOpenTemp", 0, 0, 1 },
1630 { "-GSFilePath", 0, 0, 1 },
1632 /* This should be processed after ordinary file name args and the like. */
1633 { "-kill", "--kill", -10, 0 },
1636 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1637 so that the highest priority ones come first.
1638 Do not change the order of elements of equal priority.
1639 If an option takes an argument, keep it and its argument together.
1641 If an option that takes no argument appears more
1642 than once, eliminate all but one copy of it. */
1645 sort_args (int argc
, char **argv
)
1647 char **new = xmalloc (argc
* sizeof *new);
1648 /* For each element of argv,
1649 the corresponding element of options is:
1650 0 for an option that takes no arguments,
1651 1 for an option that takes one argument, etc.
1652 -1 for an ordinary non-option argument. */
1653 int *options
= xnmalloc (argc
, sizeof *options
);
1654 int *priority
= xnmalloc (argc
, sizeof *priority
);
1656 int incoming_used
= 1;
1660 /* Categorize all the options,
1661 and figure out which argv elts are option arguments. */
1662 for (from
= 1; from
< argc
; from
++)
1666 if (argv
[from
][0] == '-')
1670 /* If we have found "--", don't consider
1671 any more arguments as options. */
1672 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1674 /* Leave the "--", and everything following it, at the end. */
1675 for (; from
< argc
; from
++)
1677 priority
[from
] = -100;
1683 /* Look for a match with a known old-fashioned option. */
1684 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1685 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1687 options
[from
] = standard_args
[i
].nargs
;
1688 priority
[from
] = standard_args
[i
].priority
;
1689 if (from
+ standard_args
[i
].nargs
>= argc
)
1690 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1691 from
+= standard_args
[i
].nargs
;
1695 /* Look for a match with a known long option.
1696 MATCH is -1 if no match so far, -2 if two or more matches so far,
1697 >= 0 (the table index of the match) if just one match so far. */
1698 if (argv
[from
][1] == '-')
1700 char const *equals
= strchr (argv
[from
], '=');
1702 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1707 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1708 if (standard_args
[i
].longname
1709 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1718 /* If we found exactly one match, use that. */
1721 options
[from
] = standard_args
[match
].nargs
;
1722 priority
[from
] = standard_args
[match
].priority
;
1723 /* If --OPTION=VALUE syntax is used,
1724 this option uses just one argv element. */
1727 if (from
+ options
[from
] >= argc
)
1728 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1729 from
+= options
[from
];
1731 /* FIXME When match < 0, shouldn't there be some error,
1732 or at least indication to the user that there was a
1739 /* Copy the arguments, in order of decreasing priority, to NEW. */
1741 while (incoming_used
< argc
)
1744 int best_priority
= -9999;
1746 /* Find the highest priority remaining option.
1747 If several have equal priority, take the first of them. */
1748 for (from
= 1; from
< argc
; from
++)
1750 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1752 best_priority
= priority
[from
];
1755 /* Skip option arguments--they are tied to the options. */
1756 if (options
[from
] > 0)
1757 from
+= options
[from
];
1763 /* Copy the highest priority remaining option, with its args, to NEW.
1764 Unless it is a duplicate of the previous one. */
1765 if (! (options
[best
] == 0
1766 && ! strcmp (new[to
- 1], argv
[best
])))
1768 new[to
++] = argv
[best
];
1769 for (i
= 0; i
< options
[best
]; i
++)
1770 new[to
++] = argv
[best
+ i
+ 1];
1773 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1775 /* Clear out this option in ARGV. */
1777 for (i
= 0; i
< options
[best
]; i
++)
1778 argv
[best
+ i
+ 1] = 0;
1781 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1785 memcpy (argv
, new, sizeof (char *) * argc
);
1792 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1793 doc
: /* Exit the Emacs job and kill it.
1794 If ARG is an integer, return ARG as the exit program code.
1795 If ARG is a string, stuff it as keyboard input.
1797 This function is called upon receipt of the signals SIGTERM
1798 or SIGHUP, and upon SIGINT in batch mode.
1800 The value of `kill-emacs-hook', if not void,
1801 is a list of functions (of no args),
1802 all of which are called before Emacs is actually killed. */)
1805 struct gcpro gcpro1
;
1814 hook
= intern ("kill-emacs-hook");
1815 Frun_hooks (1, &hook
);
1819 #ifdef HAVE_X_WINDOWS
1820 /* Transfer any clipboards we own to the clipboard manager. */
1821 x_clipboard_manager_save_all ();
1824 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1827 ns_release_autorelease_pool (ns_pool
);
1830 /* If we have an auto-save list file,
1831 kill it because we are exiting Emacs deliberately (not crashing).
1832 Do it after shut_down_emacs, which does an auto-save. */
1833 if (STRINGP (Vauto_save_list_file_name
))
1834 unlink (SSDATA (Vauto_save_list_file_name
));
1837 exit_code
= (XINT (arg
) < 0
1838 ? XINT (arg
) | INT_MIN
1839 : XINT (arg
) & INT_MAX
);
1840 else if (noninteractive
&& (fflush (stdout
) || ferror (stdout
)))
1841 exit_code
= EXIT_FAILURE
;
1843 exit_code
= EXIT_SUCCESS
;
1848 /* Perform an orderly shutdown of Emacs. Autosave any modified
1849 buffers, kill any child processes, clean up the terminal modes (if
1850 we're in the foreground), and other stuff like that. Don't perform
1851 any redisplay; this may be called when Emacs is shutting down in
1852 the background, or after its X connection has died.
1854 If SIG is a signal number, print a message for it.
1856 This is called by fatal signal handlers, X protocol error handlers,
1860 shut_down_emacs (int sig
, Lisp_Object stuff
)
1862 /* Prevent running of hooks from now on. */
1865 /* Don't update display from now on. */
1866 Vinhibit_redisplay
= Qt
;
1868 /* If we are controlling the terminal, reset terminal modes. */
1871 int pgrp
= EMACS_GETPGRP (0);
1872 int tpgrp
= tcgetpgrp (0);
1873 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1875 reset_all_sys_modes ();
1876 if (sig
&& sig
!= SIGTERM
)
1878 static char const format
[] = "Fatal error %d: ";
1879 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1880 int buflen
= sprintf (buf
, format
, sig
);
1881 char const *sig_desc
= strsignal (sig
);
1882 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1883 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1889 reset_all_sys_modes ();
1892 stuff_buffered_input (stuff
);
1894 inhibit_sentinels
= 1;
1895 kill_buffer_processes (Qnil
);
1896 Fdo_auto_save (Qt
, Qnil
);
1898 #ifdef CLASH_DETECTION
1899 unlock_all_files ();
1902 /* There is a tendency for a SIGIO signal to arrive within exit,
1903 and cause a SIGHUP because the input descriptor is already closed. */
1911 /* Do this only if terminating normally, we want glyph matrices
1912 etc. in a core dump. */
1913 if (sig
== 0 || sig
== SIGTERM
)
1915 check_glyph_memory ();
1916 check_message_stack ();
1924 ns_term_shutdown (sig
);
1928 xml_cleanup_parser ();
1938 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1939 doc
: /* Dump current state of Emacs into executable file FILENAME.
1940 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1941 This is used in the file `loadup.el' when building Emacs.
1943 You must run Emacs in batch mode in order to dump it. */)
1944 (Lisp_Object filename
, Lisp_Object symfile
)
1948 ptrdiff_t count
= SPECPDL_INDEX ();
1952 if (! noninteractive
)
1953 error ("Dumping Emacs works only in batch mode");
1957 /* Warn if the gap between BSS end and heap start is larger than this. */
1958 # define MAX_HEAP_BSS_DIFF (1024*1024)
1960 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1962 fprintf (stderr
, "**************************************************\n");
1963 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
1964 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
1966 fprintf (stderr
, "or something similar is in effect. The dump may\n");
1967 fprintf (stderr
, "fail because of this. See the section about\n");
1968 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
1969 fprintf (stderr
, "**************************************************\n");
1971 #endif /* GNU_LINUX */
1973 /* Bind `command-line-processed' to nil before dumping,
1974 so that the dumped Emacs will process its command line
1975 and set up to work with X windows if appropriate. */
1976 symbol
= intern ("command-line-processed");
1977 specbind (symbol
, Qnil
);
1979 CHECK_STRING (filename
);
1980 filename
= Fexpand_file_name (filename
, Qnil
);
1981 if (!NILP (symfile
))
1983 CHECK_STRING (symfile
);
1984 if (SCHARS (symfile
))
1985 symfile
= Fexpand_file_name (symfile
, Qnil
);
1989 Vpurify_flag
= Qnil
;
1992 set_time_zone_rule (dump_tz
);
1993 #ifndef LOCALTIME_CACHE
1994 /* Force a tz reload, since set_time_zone_rule doesn't. */
2000 /* Tell malloc where start of impure now is. */
2001 /* Also arrange for warnings when nearly out of space. */
2002 #ifndef SYSTEM_MALLOC
2004 /* On Windows, this was done before dumping, and that once suffices.
2005 Meanwhile, my_edata is not valid on Windows. */
2007 extern char my_edata
[];
2008 memory_warnings (my_edata
, malloc_warning
);
2010 #endif /* not WINDOWSNT */
2011 #endif /* not SYSTEM_MALLOC */
2012 #ifdef DOUG_LEA_MALLOC
2013 malloc_state_ptr
= malloc_get_state ();
2016 #ifdef USE_MMAP_FOR_BUFFERS
2019 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2020 #ifdef USE_MMAP_FOR_BUFFERS
2023 #ifdef DOUG_LEA_MALLOC
2024 free (malloc_state_ptr
);
2029 return unbind_to (count
, Qnil
);
2032 #endif /* not CANNOT_DUMP */
2035 /* Recover from setlocale (LC_ALL, ""). */
2039 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2040 so that numbers are read and printed properly for Emacs Lisp. */
2041 setlocale (LC_NUMERIC
, "C");
2044 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2047 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2049 if (! EQ (*plocale
, desired_locale
))
2051 *plocale
= desired_locale
;
2052 setlocale (category
, (STRINGP (desired_locale
)
2053 ? SSDATA (desired_locale
)
2058 /* Set system time locale to match Vsystem_time_locale, if possible. */
2060 synchronize_system_time_locale (void)
2062 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2063 Vsystem_time_locale
);
2066 /* Set system messages locale to match Vsystem_messages_locale, if
2069 synchronize_system_messages_locale (void)
2072 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2073 Vsystem_messages_locale
);
2076 #endif /* HAVE_SETLOCALE */
2080 decode_env_path (const char *evarname
, const char *defalt
)
2082 const char *path
, *p
;
2083 Lisp_Object lpath
, element
, tem
;
2086 const char *emacs_dir
= egetenv ("emacs_dir");
2087 static const char *emacs_dir_env
= "%emacs_dir%/";
2088 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2091 /* It's okay to use getenv here, because this function is only used
2092 to initialize variables when Emacs starts up, and isn't called
2095 path
= getenv (evarname
);
2106 /* Ensure values from the environment use the proper directory separator. */
2109 char *path_copy
= alloca (strlen (path
) + 1);
2110 strcpy (path_copy
, path
);
2111 dostounix_filename (path_copy
);
2118 p
= strchr (path
, SEPCHAR
);
2120 p
= path
+ strlen (path
);
2121 element
= (p
- path
? make_string (path
, p
- path
)
2122 : build_string ("."));
2124 /* Relative file names in the default path are interpreted as
2125 being relative to $emacs_dir. */
2126 if (emacs_dir
&& defaulted
2127 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2128 element
= Fexpand_file_name (Fsubstring (element
,
2129 make_number (emacs_dir_len
),
2131 build_string (emacs_dir
));
2134 /* Add /: to the front of the name
2135 if it would otherwise be treated as magic. */
2136 tem
= Ffind_file_name_handler (element
, Qt
);
2138 /* However, if the handler says "I'm safe",
2139 don't bother adding /:. */
2143 prop
= Fget (tem
, intern ("safe-magic"));
2149 element
= concat2 (build_string ("/:"), element
);
2151 lpath
= Fcons (element
, lpath
);
2157 return Fnreverse (lpath
);
2160 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2161 doc
: /* Return non-nil if the current emacs process is a daemon.
2162 If the daemon was given a name argument, return that name. */)
2167 return build_string (daemon_name
);
2174 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2175 doc
: /* Mark the Emacs daemon as being initialized.
2176 This finishes the daemonization process by doing the other half of detaching
2177 from the parent process and its tty file descriptors. */)
2184 error ("This function can only be called if emacs is run as a daemon");
2186 if (daemon_pipe
[1] < 0)
2187 error ("The daemon has already been initialized");
2189 if (NILP (Vafter_init_time
))
2190 error ("This function can only be called after loading the init files");
2192 /* Get rid of stdin, stdout and stderr. */
2193 nfd
= open ("/dev/null", O_RDWR
);
2195 err
|= dup2 (nfd
, 0) < 0;
2196 err
|= dup2 (nfd
, 1) < 0;
2197 err
|= dup2 (nfd
, 2) < 0;
2198 err
|= close (nfd
) != 0;
2200 /* Closing the pipe will notify the parent that it can exit.
2201 FIXME: In case some other process inherited the pipe, closing it here
2202 won't notify the parent because it's still open elsewhere, so we
2203 additionally send a byte, just to make sure the parent really exits.
2204 Instead, we should probably close the pipe in start-process and
2205 call-process to make sure the pipe is never inherited by
2207 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2208 err
|= close (daemon_pipe
[1]) != 0;
2209 /* Set it to an invalid value so we know we've already run this function. */
2210 daemon_pipe
[1] = -1;
2213 error ("I/O error during daemon initialization");
2218 syms_of_emacs (void)
2220 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2221 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2222 DEFSYM (Qkill_emacs
, "kill-emacs");
2225 defsubr (&Sdump_emacs
);
2228 defsubr (&Skill_emacs
);
2230 defsubr (&Sinvocation_name
);
2231 defsubr (&Sinvocation_directory
);
2232 defsubr (&Sdaemonp
);
2233 defsubr (&Sdaemon_initialized
);
2235 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2236 doc
: /* Args passed by shell to Emacs, as a list of strings.
2237 Many arguments are deleted from the list as they are processed. */);
2239 DEFVAR_LISP ("system-type", Vsystem_type
,
2240 doc
: /* The value is a symbol indicating the type of operating system you are using.
2242 `gnu' compiled for a GNU Hurd system.
2243 `gnu/linux' compiled for a GNU/Linux system.
2244 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2245 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2246 `ms-dos' compiled as an MS-DOS application.
2247 `windows-nt' compiled as a native W32 application.
2248 `cygwin' compiled using the Cygwin library.
2249 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2250 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2251 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2252 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2254 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2255 doc
: /* Value is string indicating configuration Emacs was built for.
2256 On MS-Windows, the value reflects the OS flavor and version on which
2257 Emacs is running. */);
2258 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2260 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2261 doc
: /* String containing the configuration options Emacs was built with. */);
2262 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2264 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2265 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2267 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2268 doc
: /* Hook run when `kill-emacs' is called.
2269 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2270 in other similar situations), functions placed on this hook should not
2271 expect to be able to interact with the user. To ask for confirmation,
2272 see `kill-emacs-query-functions' instead.
2274 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2275 `noninteractive' was non-nil. */);
2276 Vkill_emacs_hook
= Qnil
;
2278 DEFVAR_LISP ("path-separator", Vpath_separator
,
2279 doc
: /* String containing the character that separates directories in
2280 search paths, such as PATH and other similar environment variables. */);
2283 Vpath_separator
= make_string (&c
, 1);
2286 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2287 doc
: /* The program name that was used to run Emacs.
2288 Any directory names are omitted. */);
2290 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2291 doc
: /* The directory in which the Emacs executable was found, to run it.
2292 The value is nil if that directory's name is not known. */);
2294 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2295 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2296 In an installed Emacs, this is normally nil. It is non-nil if
2297 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2298 within the variable `invocation-directory' or its parent. For example,
2299 this is the case when running an uninstalled Emacs executable from its
2300 build directory. */);
2301 Vinstallation_directory
= Qnil
;
2303 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2304 doc
: /* System locale for messages. */);
2305 Vsystem_messages_locale
= Qnil
;
2307 DEFVAR_LISP ("previous-system-messages-locale",
2308 Vprevious_system_messages_locale
,
2309 doc
: /* Most recently used system locale for messages. */);
2310 Vprevious_system_messages_locale
= Qnil
;
2312 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2313 doc
: /* System locale for time. */);
2314 Vsystem_time_locale
= Qnil
;
2316 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2317 doc
: /* Most recently used system locale for time. */);
2318 Vprevious_system_time_locale
= Qnil
;
2320 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2321 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2322 Vbefore_init_time
= Qnil
;
2324 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2325 doc
: /* Value of `current-time' after loading the init files.
2326 This is nil during initialization. */);
2327 Vafter_init_time
= Qnil
;
2329 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2330 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2331 inhibit_x_resources
= 0;
2333 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2334 doc
: /* Short copyright string for this version of Emacs. */);
2335 Vemacs_copyright
= build_string (emacs_copyright
);
2337 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2338 doc
: /* Version numbers of this version of Emacs. */);
2339 Vemacs_version
= build_string (emacs_version
);
2341 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2342 doc
: /* Alist of dynamic libraries vs external files implementing them.
2343 Each element is a list (LIBRARY FILE...), where the car is a symbol
2344 representing a supported external library, and the rest are strings giving
2345 alternate filenames for that library.
2347 Emacs tries to load the library from the files in the order they appear on
2348 the list; if none is loaded, the running session of Emacs won't have access
2351 Note that image types `pbm' and `xbm' do not need entries in this variable
2352 because they do not depend on external libraries and are always available.
2354 Also note that this is not a generic facility for accessing external
2355 libraries; only those already known by Emacs will be loaded. */);
2356 Vdynamic_library_alist
= Qnil
;
2357 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2359 /* Make sure IS_DAEMON starts up as false. */