1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 Free Software
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 <close-stream.h>
31 #include <ignore-value.h>
41 #if defined WINDOWSNT || defined HAVE_NTGUI
42 #include "w32select.h"
44 #include "w32common.h"
47 #if defined HAVE_NTGUI && defined CYGWIN
51 #ifdef HAVE_WINDOW_SYSTEM
53 #endif /* HAVE_WINDOW_SYSTEM */
55 #ifdef NS_IMPL_GNUSTEP
56 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
57 #include <GNUstepBase/GSConfig.h>
61 #include "intervals.h"
62 #include "character.h"
68 #include "blockinput.h"
69 #include "syssignal.h"
72 #include "termhooks.h"
80 #if (defined PROFILING \
81 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
82 # include <sys/gmon.h>
83 extern void moncontrol (int mode
);
92 #include <sys/resource.h>
95 #ifdef HAVE_PERSONALITY_LINUX32
96 #include <sys/personality.h>
99 static const char emacs_version
[] = VERSION
;
100 static const char emacs_copyright
[] = COPYRIGHT
;
102 /* Empty lisp strings. To avoid having to build any others. */
103 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
106 /* Cache for externally loaded libraries. */
107 Lisp_Object Vlibrary_cache
;
110 /* Set after Emacs has started up the first time.
111 Prevents reinitialization of the Lisp world and keymaps
112 on subsequent starts. */
116 extern void unexec_init_emacs_zone (void);
119 #ifdef DOUG_LEA_MALLOC
120 /* Preserves a pointer to the memory allocated that copies that
121 static data inside glibc's malloc. */
122 static void *malloc_state_ptr
;
123 /* From glibc, a routine that returns a copy of the malloc internal state. */
124 extern void *malloc_get_state (void);
125 /* From glibc, a routine that overwrites the malloc internal state. */
126 extern int malloc_set_state (void*);
127 /* True if the MALLOC_CHECK_ environment variable was set while
128 dumping. Used to work around a bug in glibc's malloc. */
129 static bool malloc_using_checking
;
132 Lisp_Object Qfile_name_handler_alist
;
134 Lisp_Object Qrisky_local_variable
;
136 Lisp_Object Qkill_emacs
;
138 /* If true, Emacs should not attempt to use a window-specific code,
139 but instead should use the virtual terminal under which it was started. */
140 bool inhibit_window_system
;
142 /* If true, a filter or a sentinel is running. Tested to save the match
143 data on the first attempt to change it inside asynchronous code. */
144 bool running_asynch_code
;
146 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
147 /* If true, -d was specified, meaning we're using some window system. */
151 /* An address near the bottom of the stack.
152 Tells GC how to save a copy of the stack. */
155 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
156 /* The address where the heap starts (from the first sbrk (0) call). */
157 static void *my_heap_start
;
161 /* The gap between BSS end and heap start as far as we can tell. */
162 static uprintmax_t heap_bss_diff
;
165 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
168 On Cocoa, CoreFoundation lib fails in forked process:
169 http://developer.apple.com/ReleaseNotes/
170 CoreFoundation/CoreFoundation.html)
172 On Windows, a Cygwin fork child cannot access the USER subsystem.
174 We mark being in the exec'd process by a daemon name argument of
175 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
176 NAME is the original daemon name, if any. */
177 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
178 # define DAEMON_MUST_EXEC
181 /* True means running Emacs without interactive terminal. */
184 /* True means remove site-lisp directories from load-path. */
187 /* Name for the server started by the daemon.*/
188 static char *daemon_name
;
190 /* Pipe used to send exit notification to the daemon parent at
194 /* Save argv and argc. */
198 static void sort_args (int argc
, char **argv
);
199 static void syms_of_emacs (void);
201 /* MSVC needs each string be shorter than 2048 bytes, so the usage
202 strings below are split to not overflow this limit. */
204 Usage: %s [OPTION-OR-FILENAME]...\n\
206 Run Emacs, the extensible, customizable, self-documenting real-time\n\
207 display editor. The recommended way to start Emacs for normal editing\n\
208 is with no options at all.\n\
210 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
211 read the main documentation for these command-line arguments.\n\
213 Initialization options:\n\
215 --batch do not do interactive display; implies -q\n\
216 --chdir DIR change to directory DIR\n\
217 --daemon start a server in the background\n\
218 --debug-init enable Emacs Lisp debugger for init file\n\
219 --display, -d DISPLAY use X server DISPLAY\n\
220 --no-desktop do not load a saved desktop\n\
221 --no-init-file, -q load neither ~/.emacs nor default.el\n\
222 --no-shared-memory, -nl do not use shared memory\n\
223 --no-site-file do not load site-start.el\n\
224 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
225 --no-splash do not display a splash screen on startup\n\
226 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
227 --quick, -Q equivalent to:\n\
228 -q --no-site-file --no-site-lisp --no-splash\n\
229 --script FILE run FILE as an Emacs Lisp script\n\
230 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
231 --user, -u USER load ~USER/.emacs instead of your own\n\
237 FILE visit FILE using find-file\n\
238 +LINE go to line LINE in next FILE\n\
239 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
240 --directory, -L DIR add DIR to variable load-path\n\
241 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
242 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
243 --file FILE visit FILE using find-file\n\
244 --find-file FILE visit FILE using find-file\n\
245 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
246 --insert FILE insert contents of FILE into current buffer\n\
247 --kill exit without asking for confirmation\n\
248 --load, -l FILE load Emacs Lisp FILE using the load function\n\
249 --visit FILE visit FILE using find-file\n\
255 --background-color, -bg COLOR window background color\n\
256 --basic-display, -D disable many display features;\n\
257 used for debugging Emacs\n\
258 --border-color, -bd COLOR main border color\n\
259 --border-width, -bw WIDTH width of main border\n\
260 --color, --color=MODE override color mode for character terminals;\n\
261 MODE defaults to `auto', and\n\
262 can also be `never', `always',\n\
263 or a mode name like `ansi8'\n\
264 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
265 --font, -fn FONT default font; must be fixed-width\n\
266 --foreground-color, -fg COLOR window foreground color\n\
267 --fullheight, -fh make the first frame high as the screen\n\
268 --fullscreen, -fs make the first frame fullscreen\n\
269 --fullwidth, -fw make the first frame wide as the screen\n\
270 --maximized, -mm make the first frame maximized\n\
271 --geometry, -g GEOMETRY window geometry\n\
272 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
273 --iconic start Emacs in iconified state\n\
274 --internal-border, -ib WIDTH width between text and main border\n\
275 --line-spacing, -lsp PIXELS additional space to put between lines\n\
276 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
277 --name NAME title for initial Emacs frame\n\
278 --no-blinking-cursor, -nbc disable blinking cursor\n\
279 --reverse-video, -r, -rv switch foreground and background\n\
280 --title, -T TITLE title for initial Emacs frame\n\
281 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
282 --xrm XRESOURCES set additional X resources\n\
283 --parent-id XID set parent window\n\
284 --help display this help and exit\n\
285 --version output version information and exit\n\
289 You can generally also specify long option names with a single -; for\n\
290 example, -batch as well as --batch. You can use any unambiguous\n\
291 abbreviation for a --option.\n\
293 Various environment variables and window system resources also affect\n\
294 Emacs' operation. See the main documentation.\n\
296 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
297 section of the Emacs manual or the file BUGS.\n"
300 /* True if handling a fatal error already. */
301 bool fatal_error_in_progress
;
304 /* NS autrelease pool, for memory management. */
305 static void *ns_pool
;
310 /* Report a fatal error due to signal SIG, output a backtrace of at
311 most BACKTRACE_LIMIT lines, and exit. */
313 terminate_due_to_signal (int sig
, int backtrace_limit
)
315 signal (sig
, SIG_DFL
);
316 totally_unblock_input ();
318 /* If fatal error occurs in code below, avoid infinite recursion. */
319 if (! fatal_error_in_progress
)
321 fatal_error_in_progress
= 1;
323 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
324 Fkill_emacs (make_number (sig
));
326 shut_down_emacs (sig
, Qnil
);
327 emacs_backtrace (backtrace_limit
);
330 /* Signal the same code; this time it will really be fatal.
331 Since we're in a signal handler, the signal is blocked, so we
332 have to unblock it if we want to really receive it. */
336 sigemptyset (&unblocked
);
337 sigaddset (&unblocked
, sig
);
338 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
344 /* This shouldn't be executed, but it prevents a warning. */
348 /* Code for dealing with Lisp access to the Unix command line. */
351 init_cmdargs (int argc
, char **argv
, int skip_args
)
354 Lisp_Object name
, dir
, handler
;
355 ptrdiff_t count
= SPECPDL_INDEX ();
356 Lisp_Object raw_name
;
361 raw_name
= build_string (argv
[0]);
363 /* Add /: to the front of the name
364 if it would otherwise be treated as magic. */
365 handler
= Ffind_file_name_handler (raw_name
, Qt
);
366 if (! NILP (handler
))
367 raw_name
= concat2 (build_string ("/:"), raw_name
);
369 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
370 Vinvocation_directory
= Ffile_name_directory (raw_name
);
372 /* If we got no directory in argv[0], search PATH to find where
373 Emacs actually came from. */
374 if (NILP (Vinvocation_directory
))
377 int yes
= openp (Vexec_path
, Vinvocation_name
,
378 Vexec_suffixes
, &found
, make_number (X_OK
));
381 /* Add /: to the front of the name
382 if it would otherwise be treated as magic. */
383 handler
= Ffind_file_name_handler (found
, Qt
);
384 if (! NILP (handler
))
385 found
= concat2 (build_string ("/:"), found
);
386 Vinvocation_directory
= Ffile_name_directory (found
);
390 if (!NILP (Vinvocation_directory
)
391 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
392 /* Emacs was started with relative path, like ./emacs.
394 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
396 Vinstallation_directory
= Qnil
;
398 if (!NILP (Vinvocation_directory
))
400 dir
= Vinvocation_directory
;
402 /* If we are running from the build directory, set DIR to the
403 src subdirectory of the Emacs tree, like on Posix
405 if (SBYTES (dir
) > sizeof ("/i386/") - 1
406 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
408 dir
= Fexpand_file_name (build_string ("../.."), dir
);
409 #else /* !WINDOWSNT */
411 name
= Fexpand_file_name (Vinvocation_name
, dir
);
414 Lisp_Object tem
, lib_src_exists
;
415 Lisp_Object etc_exists
, info_exists
;
417 /* See if dir contains subdirs for use by Emacs.
418 Check for the ones that would exist in a build directory,
419 not including lisp and info. */
420 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
421 lib_src_exists
= Ffile_exists_p (tem
);
424 /* MSDOS installations frequently remove lib-src, but we still
425 must set installation-directory, or else info won't find
426 its files (it uses the value of installation-directory). */
427 tem
= Fexpand_file_name (build_string ("info"), dir
);
428 info_exists
= Ffile_exists_p (tem
);
433 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
435 tem
= Fexpand_file_name (build_string ("etc"), dir
);
436 etc_exists
= Ffile_exists_p (tem
);
437 if (!NILP (etc_exists
))
439 Vinstallation_directory
440 = Ffile_name_as_directory (dir
);
445 /* See if dir's parent contains those subdirs. */
446 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
447 lib_src_exists
= Ffile_exists_p (tem
);
451 /* See the MSDOS commentary above. */
452 tem
= Fexpand_file_name (build_string ("../info"), dir
);
453 info_exists
= Ffile_exists_p (tem
);
458 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
460 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
461 etc_exists
= Ffile_exists_p (tem
);
462 if (!NILP (etc_exists
))
464 tem
= Fexpand_file_name (build_string (".."), dir
);
465 Vinstallation_directory
466 = Ffile_name_as_directory (tem
);
471 /* If the Emacs executable is actually a link,
472 next try the dir that the link points into. */
473 tem
= Ffile_symlink_p (name
);
476 name
= Fexpand_file_name (tem
, dir
);
477 dir
= Ffile_name_directory (name
);
484 Vcommand_line_args
= Qnil
;
486 for (i
= argc
- 1; i
>= 0; i
--)
488 if (i
== 0 || i
> skip_args
)
489 /* For the moment, we keep arguments as is in unibyte strings.
490 They are decoded in the function command-line after we know
491 locale-coding-system. */
493 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
497 unbind_to (count
, Qnil
);
500 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
501 doc
: /* Return the program name that was used to run Emacs.
502 Any directory names are omitted. */)
505 return Fcopy_sequence (Vinvocation_name
);
508 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
510 doc
: /* Return the directory name in which the Emacs executable was located. */)
513 return Fcopy_sequence (Vinvocation_directory
);
518 /* A valid but unlikely value for the TZ environment value.
519 It is OK (though a bit slower) if the user actually chooses this value. */
520 static char const dump_tz
[] = "UtC0";
523 #ifndef ORDINARY_LINK
524 /* We don't include crtbegin.o and crtend.o in the link,
525 so these functions and variables might be missed.
526 Provide dummy definitions to avoid error.
527 (We don't have any real constructors or destructors.) */
530 /* Define a dummy function F. Declare F too, to pacify gcc
531 -Wmissing-prototypes. */
532 #define DEFINE_DUMMY_FUNCTION(f) \
533 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
535 #ifndef GCC_CTORS_IN_LIBC
536 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
537 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
538 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
539 /* GNU/Linux has a bug in its library; avoid an error. */
541 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
543 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
544 #endif /* GCC_CTORS_IN_LIBC */
545 DEFINE_DUMMY_FUNCTION (__main
)
546 #endif /* __GNUC__ */
547 #endif /* ORDINARY_LINK */
549 /* Test whether the next argument in ARGV matches SSTR or a prefix of
550 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
551 (the argument is supposed to have a value) store in *VALPTR either
552 the next argument or the portion of this one after the equal sign.
553 ARGV is read starting at position *SKIPPTR; this index is advanced
554 by the number of arguments used.
556 Too bad we can't just use getopt for all of this, but we don't have
557 enough information to do it right. */
560 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
561 int minlen
, char **valptr
, int *skipptr
)
567 /* Don't access argv[argc]; give up in advance. */
568 if (argc
<= *skipptr
+ 1)
571 arg
= argv
[*skipptr
+1];
574 if (strcmp (arg
, sstr
) == 0)
578 *valptr
= argv
[*skipptr
+2];
585 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
586 ? p
- arg
: strlen (arg
));
587 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
589 else if (valptr
== NULL
)
600 else if (argv
[*skipptr
+2] != NULL
)
602 *valptr
= argv
[*skipptr
+2];
612 #ifdef DOUG_LEA_MALLOC
614 /* malloc can be invoked even before main (e.g. by the dynamic
615 linker), so the dumped malloc state must be restored as early as
616 possible using this special hook. */
619 malloc_initialize_hook (void)
623 if (!malloc_using_checking
)
624 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
625 ignored if the heap to be restored was constructed without
626 malloc checking. Can't use unsetenv, since that calls malloc. */
630 for (p
= environ
; p
&& *p
; p
++)
631 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
640 malloc_set_state (malloc_state_ptr
);
641 #ifndef XMALLOC_OVERRUN_CHECK
642 free (malloc_state_ptr
);
647 if (my_heap_start
== 0)
648 my_heap_start
= sbrk (0);
649 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
653 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
655 #endif /* DOUG_LEA_MALLOC */
657 /* Close standard output and standard error, reporting any write
658 errors as best we can. This is intended for use with atexit. */
660 close_output_streams (void)
662 if (close_stream (stdout
) != 0)
664 fprintf (stderr
, "Write error to standard output: %s\n",
667 _exit (EXIT_FAILURE
);
670 if (close_stream (stderr
) != 0)
671 _exit (EXIT_FAILURE
);
676 main (int argc
, char **argv
)
681 char stack_bottom_variable
;
682 bool do_initial_setlocale
;
685 #ifdef HAVE_SETRLIMIT
691 #ifdef DAEMON_MUST_EXEC
700 #ifdef G_SLICE_ALWAYS_MALLOC
701 /* This is used by the Cygwin build. */
702 xputenv ("G_SLICE=always-malloc");
708 extern char my_endbss
[];
709 extern char *my_endbss_static
;
711 if (my_heap_start
== 0)
712 my_heap_start
= sbrk (0);
714 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
718 #if defined WINDOWSNT || defined HAVE_NTGUI
719 /* Set global variables used to detect Windows version. Do this as
720 early as possible. (unexw32.c calls this function as well, but
721 the additional call here is harmless.) */
722 cache_system_info ();
725 #ifdef RUN_TIME_REMAP
727 run_time_remap (argv
[0]);
730 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
733 unexec_init_emacs_zone ();
736 atexit (close_output_streams
);
738 sort_args (argc
, argv
);
740 while (argv
[argc
]) argc
++;
742 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
744 const char *version
, *copyright
;
747 Lisp_Object tem
, tem2
;
748 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
749 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
752 fprintf (stderr
, "Invalid value of `emacs-version'\n");
757 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
762 version
= SSDATA (tem
);
763 copyright
= SSDATA (tem2
);
768 version
= emacs_version
;
769 copyright
= emacs_copyright
;
771 printf ("GNU Emacs %s\n", version
);
772 printf ("%s\n", copyright
);
773 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
774 printf ("You may redistribute copies of Emacs\n");
775 printf ("under the terms of the GNU General Public License.\n");
776 printf ("For more information about these matters, ");
777 printf ("see the file named COPYING.\n");
781 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
782 if (chdir (ch_to_dir
) == -1)
784 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
785 argv
[0], ch_to_dir
, strerror (errno
));
789 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
790 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
792 #ifdef HAVE_PERSONALITY_LINUX32
793 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
795 /* Set this so we only do this once. */
796 xputenv ("EMACS_HEAP_EXEC=true");
798 /* A flag to turn off address randomization which is introduced
799 in linux kernel shipped with fedora core 4 */
800 #define ADD_NO_RANDOMIZE 0x0040000
801 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
802 #undef ADD_NO_RANDOMIZE
804 execvp (argv
[0], argv
);
806 /* If the exec fails, try to dump anyway. */
809 #endif /* HAVE_PERSONALITY_LINUX32 */
811 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
812 /* Extend the stack space available.
813 Don't do that if dumping, since some systems (e.g. DJGPP)
814 might define a smaller stack limit at that time. */
817 && (!noninteractive
|| initialized
)
819 && !getrlimit (RLIMIT_STACK
, &rlim
))
822 extern size_t re_max_failures
;
823 /* Approximate the amount regex.c needs per unit of re_max_failures. */
824 int ratio
= 20 * sizeof (char *);
825 /* Then add 33% to cover the size of the smaller stacks that regex.c
826 successively allocates and discards, on its way to the maximum. */
828 /* Add in some extra to cover
829 what we're likely to use for other reasons. */
830 newlim
= re_max_failures
* ratio
+ 200000;
832 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
833 stack allocation routine for new process that the allocation
834 fails if stack limit is not on page boundary. So, round up the
835 new limit to page boundary. */
836 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
838 if (newlim
> rlim
.rlim_max
)
840 newlim
= rlim
.rlim_max
;
841 /* Don't let regex.c overflow the stack we have. */
842 re_max_failures
= (newlim
- 200000) / ratio
;
844 if (rlim
.rlim_cur
< newlim
)
845 rlim
.rlim_cur
= newlim
;
847 setrlimit (RLIMIT_STACK
, &rlim
);
849 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
851 /* Record (approximately) where the stack begins. */
852 stack_bottom
= &stack_bottom_variable
;
856 #ifndef SYSTEM_MALLOC
857 /* Arrange to get warning messages as memory fills up. */
858 memory_warnings (0, malloc_warning
);
860 /* Call malloc at least once, to run malloc_initialize_hook.
861 Also call realloc and free for consistency. */
862 free (realloc (malloc (4), 4));
864 #endif /* not SYSTEM_MALLOC */
866 #if defined (MSDOS) || defined (WINDOWSNT)
867 /* We do all file input/output as binary files. When we need to translate
868 newlines, we do that manually. */
870 #endif /* MSDOS || WINDOWSNT */
873 if (!isatty (fileno (stdin
)))
874 setmode (fileno (stdin
), O_BINARY
);
875 if (!isatty (fileno (stdout
)))
878 setmode (fileno (stdout
), O_BINARY
);
882 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
883 The build procedure uses this while dumping, to ensure that the
884 dumped Emacs does not have its system locale tables initialized,
885 as that might cause screwups when the dumped Emacs starts up. */
887 char *lc_all
= getenv ("LC_ALL");
888 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
891 /* Set locale now, so that initial error messages are localized properly.
892 fixup_locale must wait until later, since it builds strings. */
893 if (do_initial_setlocale
)
894 setlocale (LC_ALL
, "");
896 inhibit_window_system
= 0;
898 /* Handle the -t switch, which specifies filename to use as terminal. */
902 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
907 result
= emacs_open (term
, O_RDWR
, 0);
908 if (result
< 0 || dup (0) < 0)
910 char *errstring
= strerror (errno
);
911 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
916 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
919 fprintf (stderr
, "Using %s\n", term
);
920 #ifdef HAVE_WINDOW_SYSTEM
921 inhibit_window_system
= 1; /* -t => -nw */
928 /* Command line option --no-windows is deprecated and thus not mentioned
929 in the manual and usage information. */
930 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
931 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
932 inhibit_window_system
= 1;
934 /* Handle the -batch switch, which means don't do interactive display. */
936 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
939 Vundo_outer_limit
= Qnil
;
941 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
943 noninteractive
= 1; /* Set batch mode. */
944 /* Convert --script to -scriptload, un-skip it, and sort again
945 so that it will be handled in proper sequence. */
946 /* FIXME broken for --script=FILE - is that supposed to work? */
947 argv
[skip_args
- 1] = (char *) "-scriptload";
949 sort_args (argc
, argv
);
952 /* Handle the --help option, which gives a usage message. */
953 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
955 printf (USAGE1
, argv
[0], USAGE2
);
961 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
962 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
967 /* Start as a daemon: fork a new child process which will run the
968 rest of the initialization code, then exit.
970 Detaching a daemon requires the following steps:
974 - close the tty file-descriptors
976 We only want to do the last 2 steps once the daemon is ready to
977 serve requests, i.e. after loading .emacs (initialization).
978 OTOH initialization may start subprocesses (e.g. ispell) and these
979 should be run from the proper process (the one that will end up
980 running as daemon) and with the proper "session id" in order for
981 them to keep working after detaching, so fork and setsid need to be
982 performed before initialization.
984 We want to avoid exiting before the server socket is ready, so
985 use a pipe for synchronization. The parent waits for the child
986 to close its end of the pipe (using `daemon-initialized')
988 if (pipe (daemon_pipe
) == -1)
990 fprintf (stderr
, "Cannot pipe!\n");
994 #ifndef DAEMON_MUST_EXEC
996 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
997 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
998 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1001 #else /* DAEMON_MUST_EXEC */
1002 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1003 f
= fork (); /* in orig */
1005 f
= 0; /* in exec'd */
1006 #endif /* !DAEMON_MUST_EXEC */
1012 /* Close unused writing end of the pipe. */
1013 close (daemon_pipe
[1]);
1015 /* Just wait for the child to close its end of the pipe. */
1018 retval
= read (daemon_pipe
[0], &buf
, 1);
1020 while (retval
== -1 && errno
== EINTR
);
1024 fprintf (stderr
, "Error reading status from child\n");
1027 else if (retval
== 0)
1029 fprintf (stderr
, "Error: server did not start correctly\n");
1033 close (daemon_pipe
[0]);
1038 fprintf (stderr
, "Cannot fork!\n");
1042 #ifdef DAEMON_MUST_EXEC
1044 /* In orig process, forked as child, OR in exec'd. */
1045 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1046 { /* In orig, child: now exec w/special daemon name. */
1049 snprintf (fdStr
, sizeof fdStr
,
1050 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1051 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1053 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1055 fprintf (stderr
, "daemon: child name too long\n");
1059 argv
[skip_args
] = fdStr
;
1061 execv (argv
[0], argv
);
1062 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1066 /* In exec'd: parse special dname into pipe and name info. */
1067 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1068 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1070 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1073 dname_arg2
[0] = '\0';
1074 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1076 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1078 #endif /* DAEMON_MUST_EXEC */
1081 daemon_name
= xstrdup (dname_arg
);
1082 /* Close unused reading end of the pipe. */
1083 close (daemon_pipe
[0]);
1084 /* Make sure that the used end of the pipe is closed on exec, so
1085 that it is not accessible to programs started from .emacs. */
1086 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1090 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1095 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1096 if (! noninteractive
)
1098 extern void malloc_enable_thread (void);
1100 malloc_enable_thread ();
1104 init_signals (dumping
);
1106 noninteractive1
= noninteractive
;
1108 /* Perform basic initializations (not merely interning symbols). */
1115 init_charset_once ();
1116 init_coding_once ();
1117 init_syntax_once (); /* Create standard syntax table. */
1118 init_category_once (); /* Create standard category table. */
1119 /* Must be done before init_buffer. */
1120 init_casetab_once ();
1121 init_buffer_once (); /* Create buffer table and some buffers. */
1122 init_minibuf_once (); /* Create list of minibuffers. */
1123 /* Must precede init_window_once. */
1125 /* Call syms_of_xfaces before init_window_once because that
1126 function creates Vterminal_frame. Termcap frames now use
1127 faces, and the face implementation uses some symbols as
1130 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1131 be better to arrange things not to have this dependency. */
1133 /* Call syms_of_keyboard before init_window_once because
1134 keyboard sets up symbols that include some face names that
1135 the X support will want to use. This can happen when
1136 CANNOT_DUMP is defined. */
1137 syms_of_keyboard ();
1139 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1141 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1143 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1145 /* Before syms_of_coding because it initializes Qcharsetp. */
1147 /* Before init_window_once, because it sets up the
1148 Vcoding_system_hash_table. */
1149 syms_of_coding (); /* This should be after syms_of_fileio. */
1151 init_window_once (); /* Init the window system. */
1152 #ifdef HAVE_WINDOW_SYSTEM
1153 init_fringe_once (); /* Swap bitmaps if necessary. */
1154 #endif /* HAVE_WINDOW_SYSTEM */
1159 if (do_initial_setlocale
)
1162 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1163 Vsystem_time_locale
= Vprevious_system_time_locale
;
1168 running_asynch_code
= 0;
1172 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1175 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1178 ns_pool
= ns_alloc_autorelease_pool ();
1179 if (!noninteractive
)
1181 #ifdef NS_IMPL_COCOA
1182 if (skip_args
< argc
)
1184 /* FIXME: Do the right thing if getenv returns NULL, or if
1186 if (!strncmp (argv
[skip_args
], "-psn", 4))
1189 chdir (getenv ("HOME"));
1191 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1194 chdir (getenv ("HOME"));
1199 #endif /* HAVE_NS */
1201 #ifdef HAVE_X_WINDOWS
1202 /* Stupid kludge to catch command-line display spec. We can't
1203 handle this argument entirely in window system dependent code
1204 because we don't even know which window system dependent code
1205 to run until we've recognized this argument. */
1207 char *displayname
= 0;
1208 int count_before
= skip_args
;
1210 /* Skip any number of -d options, but only use the last one. */
1213 int count_before_this
= skip_args
;
1215 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1217 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1222 count_before
= count_before_this
;
1225 /* If we have the form --display=NAME,
1226 convert it into -d name.
1227 This requires inserting a new element into argv. */
1228 if (displayname
&& count_before
< skip_args
)
1230 if (skip_args
== count_before
+ 1)
1232 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1233 (argc
- (count_before
+ 2)) * sizeof *argv
);
1234 argv
[count_before
+ 2] = displayname
;
1237 argv
[count_before
+ 1] = (char *) "-d";
1242 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1243 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1247 /* Don't actually discard this arg. */
1248 skip_args
= count_before
;
1250 #else /* !HAVE_X_WINDOWS */
1253 int count_before
= skip_args
;
1255 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1256 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1259 skip_args
= count_before
;
1263 /* argmatch must not be used after here,
1264 except when building temacs
1265 because the -d argument has not been skipped in skip_args. */
1268 /* Call early 'cause init_environment needs it. */
1270 /* Set defaults for several environment variables. */
1272 init_environment (argc
, argv
, skip_args
);
1279 globals_of_w32notify ();
1280 /* Initialize environment from registry settings. */
1281 init_environment (argv
);
1282 init_ntproc (dumping
); /* must precede init_editfns. */
1285 /* Initialize and GC-protect Vinitial_environment and
1286 Vprocess_environment before set_initial_environment fills them
1289 syms_of_callproc ();
1290 /* egetenv is a pretty low-level facility, which may get called in
1291 many circumstances; it seems flimsy to put off initializing it
1292 until calling init_callproc. Do not do it when dumping. */
1294 set_initial_environment ();
1296 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1297 if this is not done. Do it after set_global_environment so that we
1298 don't pollute Vglobal_environment. */
1299 /* Setting LANG here will defeat the startup locale processing... */
1304 init_buffer (); /* Init default directory of main buffer. */
1306 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1307 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1311 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1312 Lisp_Object old_log_max
;
1313 old_log_max
= Vmessage_log_max
;
1314 XSETFASTINT (Vmessage_log_max
, 0);
1315 message_dolog ("", 0, 1, 0);
1316 Vmessage_log_max
= old_log_max
;
1319 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1323 /* Check to see if Emacs has been installed correctly. */
1324 check_windows_init_file ();
1327 /* Intern the names of all standard functions and variables;
1328 define standard keys. */
1332 /* The basic levels of Lisp must come first. Note that
1333 syms_of_data and some others have already been called. */
1338 syms_of_floatfns ();
1341 syms_of_bytecode ();
1343 syms_of_casefiddle ();
1345 syms_of_category ();
1347 syms_of_character ();
1354 syms_of_filelock ();
1357 /* syms_of_keymap (); */
1365 syms_of_terminal ();
1371 syms_of_textprop ();
1372 syms_of_composite ();
1375 #endif /* WINDOWSNT */
1376 #if defined CYGWIN && defined HAVE_NTGUI
1382 #ifdef HAVE_WINDOW_SYSTEM
1385 #endif /* HAVE_WINDOW_SYSTEM */
1386 #ifdef HAVE_X_WINDOWS
1391 syms_of_xsettings ();
1398 #endif /* HAVE_X_WINDOWS */
1411 #endif /* HAVE_NTGUI */
1413 #if defined WINDOWSNT || defined HAVE_NTGUI
1414 syms_of_w32select ();
1421 syms_of_win16select ();
1428 syms_of_nsselect ();
1430 #endif /* HAVE_NS */
1438 #endif /* HAVE_INOTIFY */
1441 syms_of_dbusbind ();
1442 #endif /* HAVE_DBUS */
1446 syms_of_w32notify ();
1447 #endif /* WINDOWSNT */
1449 syms_of_profiler ();
1451 keys_of_casefiddle ();
1454 keys_of_keyboard ();
1460 /* Initialization that must be done even if the global variable
1461 initialized is non zero. */
1463 globals_of_w32font ();
1464 globals_of_w32fns ();
1465 globals_of_w32menu ();
1466 #endif /* HAVE_NTGUI */
1468 #if defined WINDOWSNT || defined HAVE_NTGUI
1469 globals_of_w32select ();
1475 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1476 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1477 init_keyboard (); /* This too must precede init_sys_modes. */
1478 if (!noninteractive
)
1479 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1481 #ifdef HAVE_WINDOW_SYSTEM
1483 #endif /* HAVE_WINDOW_SYSTEM */
1491 /* Handle -l loadup, args passed by Makefile. */
1492 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1493 Vtop_level
= Fcons (intern_c_string ("load"),
1494 Fcons (build_string (file
), Qnil
));
1495 /* Unless next switch is -nl, load "loadup.el" first thing. */
1497 Vtop_level
= Fcons (intern_c_string ("load"),
1498 Fcons (build_string ("loadup.el"), Qnil
));
1505 /* If the execution TZ happens to be the same as the dump TZ,
1506 change it to some other value and then change it back,
1507 to force the underlying implementation to reload the TZ info.
1508 This is needed on implementations that load TZ info from files,
1509 since the TZ file contents may differ between dump and execution. */
1510 char *tz
= getenv ("TZ");
1511 if (tz
&& !strcmp (tz
, dump_tz
))
1521 /* Set up for profiling. This is known to work on FreeBSD,
1522 GNU/Linux and MinGW. It might work on some other systems too.
1523 Give it a try and tell us if it works on your system. To compile
1524 for profiling, use the configure option --enable-profiling. */
1525 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1530 extern unsigned char etext
asm ("etext");
1536 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1545 #ifdef LOCALTIME_CACHE
1546 /* Some versions of localtime have a bug. They cache the value of the time
1547 zone rather than looking it up every time. Since localtime() is
1548 called to bolt the undumping time into the undumped emacs, this
1549 results in localtime ignoring the TZ environment variable.
1550 This flushes the new TZ value into localtime. */
1552 #endif /* defined (LOCALTIME_CACHE) */
1554 /* Enter editor command loop. This never returns. */
1560 /* Sort the args so we can find the most important ones
1561 at the beginning of argv. */
1563 /* First, here's a table of all the standard options. */
1565 struct standard_args
1568 const char *longname
;
1573 static const struct standard_args standard_args
[] =
1575 { "-version", "--version", 150, 0 },
1576 { "-chdir", "--chdir", 130, 1 },
1577 { "-t", "--terminal", 120, 1 },
1578 { "-nw", "--no-window-system", 110, 0 },
1579 { "-nw", "--no-windows", 110, 0 },
1580 { "-batch", "--batch", 100, 0 },
1581 { "-script", "--script", 100, 1 },
1582 { "-daemon", "--daemon", 99, 0 },
1583 { "-help", "--help", 90, 0 },
1584 { "-nl", "--no-loadup", 70, 0 },
1585 { "-nsl", "--no-site-lisp", 65, 0 },
1586 /* -d must come last before the options handled in startup.el. */
1587 { "-d", "--display", 60, 1 },
1588 { "-display", 0, 60, 1 },
1589 /* Now for the options handled in `command-line' (startup.el). */
1590 /* (Note that to imply -nsl, -Q is partially handled here.) */
1591 { "-Q", "--quick", 55, 0 },
1592 { "-quick", 0, 55, 0 },
1593 { "-q", "--no-init-file", 50, 0 },
1594 { "-no-init-file", 0, 50, 0 },
1595 { "-no-site-file", "--no-site-file", 40, 0 },
1596 { "-u", "--user", 30, 1 },
1597 { "-user", 0, 30, 1 },
1598 { "-debug-init", "--debug-init", 20, 0 },
1599 { "-iconic", "--iconic", 15, 0 },
1600 { "-D", "--basic-display", 12, 0},
1601 { "-basic-display", 0, 12, 0},
1602 { "-nbc", "--no-blinking-cursor", 12, 0 },
1603 /* Now for the options handled in `command-line-1' (startup.el). */
1604 { "-nbi", "--no-bitmap-icon", 10, 0 },
1605 { "-bg", "--background-color", 10, 1 },
1606 { "-background", 0, 10, 1 },
1607 { "-fg", "--foreground-color", 10, 1 },
1608 { "-foreground", 0, 10, 1 },
1609 { "-bd", "--border-color", 10, 1 },
1610 { "-bw", "--border-width", 10, 1 },
1611 { "-ib", "--internal-border", 10, 1 },
1612 { "-ms", "--mouse-color", 10, 1 },
1613 { "-cr", "--cursor-color", 10, 1 },
1614 { "-fn", "--font", 10, 1 },
1615 { "-font", 0, 10, 1 },
1616 { "-fs", "--fullscreen", 10, 0 },
1617 { "-fw", "--fullwidth", 10, 0 },
1618 { "-fh", "--fullheight", 10, 0 },
1619 { "-mm", "--maximized", 10, 0 },
1620 { "-g", "--geometry", 10, 1 },
1621 { "-geometry", 0, 10, 1 },
1622 { "-T", "--title", 10, 1 },
1623 { "-title", 0, 10, 1 },
1624 { "-name", "--name", 10, 1 },
1625 { "-xrm", "--xrm", 10, 1 },
1626 { "-parent-id", "--parent-id", 10, 1 },
1627 { "-r", "--reverse-video", 5, 0 },
1629 { "-reverse", 0, 5, 0 },
1630 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1631 { "-vb", "--vertical-scroll-bars", 5, 0 },
1632 { "-color", "--color", 5, 0},
1633 { "-no-splash", "--no-splash", 3, 0 },
1634 { "-no-desktop", "--no-desktop", 3, 0 },
1636 { "-NSAutoLaunch", 0, 5, 1 },
1637 { "-NXAutoLaunch", 0, 5, 1 },
1638 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1639 { "-_NSMachLaunch", 0, 85, 1 },
1640 { "-MachLaunch", 0, 85, 1 },
1641 { "-macosx", 0, 85, 0 },
1642 { "-NSHost", 0, 85, 1 },
1644 /* These have the same priority as ordinary file name args,
1645 so they are not reordered with respect to those. */
1646 { "-L", "--directory", 0, 1 },
1647 { "-directory", 0, 0, 1 },
1648 { "-l", "--load", 0, 1 },
1649 { "-load", 0, 0, 1 },
1650 /* This has no longname, because using --scriptload confuses sort_args,
1651 because then the --script long option seems to match twice; ie
1652 you can't have a long option which is a prefix of another long
1653 option. In any case, this is entirely an internal option. */
1654 { "-scriptload", NULL
, 0, 1 },
1655 { "-f", "--funcall", 0, 1 },
1656 { "-funcall", 0, 0, 1 },
1657 { "-eval", "--eval", 0, 1 },
1658 { "-execute", "--execute", 0, 1 },
1659 { "-find-file", "--find-file", 0, 1 },
1660 { "-visit", "--visit", 0, 1 },
1661 { "-file", "--file", 0, 1 },
1662 { "-insert", "--insert", 0, 1 },
1664 { "-NXOpen", 0, 0, 1 },
1665 { "-NXOpenTemp", 0, 0, 1 },
1666 { "-NSOpen", 0, 0, 1 },
1667 { "-NSOpenTemp", 0, 0, 1 },
1668 { "-GSFilePath", 0, 0, 1 },
1670 /* This should be processed after ordinary file name args and the like. */
1671 { "-kill", "--kill", -10, 0 },
1674 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1675 so that the highest priority ones come first.
1676 Do not change the order of elements of equal priority.
1677 If an option takes an argument, keep it and its argument together.
1679 If an option that takes no argument appears more
1680 than once, eliminate all but one copy of it. */
1683 sort_args (int argc
, char **argv
)
1685 char **new = xmalloc (argc
* sizeof *new);
1686 /* For each element of argv,
1687 the corresponding element of options is:
1688 0 for an option that takes no arguments,
1689 1 for an option that takes one argument, etc.
1690 -1 for an ordinary non-option argument. */
1691 int *options
= xnmalloc (argc
, sizeof *options
);
1692 int *priority
= xnmalloc (argc
, sizeof *priority
);
1694 int incoming_used
= 1;
1698 /* Categorize all the options,
1699 and figure out which argv elts are option arguments. */
1700 for (from
= 1; from
< argc
; from
++)
1704 if (argv
[from
][0] == '-')
1708 /* If we have found "--", don't consider
1709 any more arguments as options. */
1710 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1712 /* Leave the "--", and everything following it, at the end. */
1713 for (; from
< argc
; from
++)
1715 priority
[from
] = -100;
1721 /* Look for a match with a known old-fashioned option. */
1722 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1723 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1725 options
[from
] = standard_args
[i
].nargs
;
1726 priority
[from
] = standard_args
[i
].priority
;
1727 if (from
+ standard_args
[i
].nargs
>= argc
)
1728 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1729 from
+= standard_args
[i
].nargs
;
1733 /* Look for a match with a known long option.
1734 MATCH is -1 if no match so far, -2 if two or more matches so far,
1735 >= 0 (the table index of the match) if just one match so far. */
1736 if (argv
[from
][1] == '-')
1738 char const *equals
= strchr (argv
[from
], '=');
1740 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1745 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1746 if (standard_args
[i
].longname
1747 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1756 /* If we found exactly one match, use that. */
1759 options
[from
] = standard_args
[match
].nargs
;
1760 priority
[from
] = standard_args
[match
].priority
;
1761 /* If --OPTION=VALUE syntax is used,
1762 this option uses just one argv element. */
1765 if (from
+ options
[from
] >= argc
)
1766 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1767 from
+= options
[from
];
1769 /* FIXME When match < 0, shouldn't there be some error,
1770 or at least indication to the user that there was a
1777 /* Copy the arguments, in order of decreasing priority, to NEW. */
1779 while (incoming_used
< argc
)
1782 int best_priority
= -9999;
1784 /* Find the highest priority remaining option.
1785 If several have equal priority, take the first of them. */
1786 for (from
= 1; from
< argc
; from
++)
1788 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1790 best_priority
= priority
[from
];
1793 /* Skip option arguments--they are tied to the options. */
1794 if (options
[from
] > 0)
1795 from
+= options
[from
];
1801 /* Copy the highest priority remaining option, with its args, to NEW.
1802 Unless it is a duplicate of the previous one. */
1803 if (! (options
[best
] == 0
1804 && ! strcmp (new[to
- 1], argv
[best
])))
1806 new[to
++] = argv
[best
];
1807 for (i
= 0; i
< options
[best
]; i
++)
1808 new[to
++] = argv
[best
+ i
+ 1];
1811 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1813 /* Clear out this option in ARGV. */
1815 for (i
= 0; i
< options
[best
]; i
++)
1816 argv
[best
+ i
+ 1] = 0;
1819 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1823 memcpy (argv
, new, sizeof (char *) * argc
);
1830 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1831 doc
: /* Exit the Emacs job and kill it.
1832 If ARG is an integer, return ARG as the exit program code.
1833 If ARG is a string, stuff it as keyboard input.
1835 This function is called upon receipt of the signals SIGTERM
1836 or SIGHUP, and upon SIGINT in batch mode.
1838 The value of `kill-emacs-hook', if not void,
1839 is a list of functions (of no args),
1840 all of which are called before Emacs is actually killed. */)
1843 struct gcpro gcpro1
;
1852 hook
= intern ("kill-emacs-hook");
1853 Frun_hooks (1, &hook
);
1857 #ifdef HAVE_X_WINDOWS
1858 /* Transfer any clipboards we own to the clipboard manager. */
1859 x_clipboard_manager_save_all ();
1862 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1865 ns_release_autorelease_pool (ns_pool
);
1868 /* If we have an auto-save list file,
1869 kill it because we are exiting Emacs deliberately (not crashing).
1870 Do it after shut_down_emacs, which does an auto-save. */
1871 if (STRINGP (Vauto_save_list_file_name
))
1872 unlink (SSDATA (Vauto_save_list_file_name
));
1875 exit_code
= (XINT (arg
) < 0
1876 ? XINT (arg
) | INT_MIN
1877 : XINT (arg
) & INT_MAX
);
1879 exit_code
= EXIT_SUCCESS
;
1884 /* Perform an orderly shutdown of Emacs. Autosave any modified
1885 buffers, kill any child processes, clean up the terminal modes (if
1886 we're in the foreground), and other stuff like that. Don't perform
1887 any redisplay; this may be called when Emacs is shutting down in
1888 the background, or after its X connection has died.
1890 If SIG is a signal number, print a message for it.
1892 This is called by fatal signal handlers, X protocol error handlers,
1896 shut_down_emacs (int sig
, Lisp_Object stuff
)
1898 /* Prevent running of hooks from now on. */
1901 /* Don't update display from now on. */
1902 Vinhibit_redisplay
= Qt
;
1904 /* If we are controlling the terminal, reset terminal modes. */
1907 pid_t pgrp
= getpgrp ();
1908 pid_t tpgrp
= tcgetpgrp (0);
1909 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1911 reset_all_sys_modes ();
1912 if (sig
&& sig
!= SIGTERM
)
1914 static char const format
[] = "Fatal error %d: ";
1915 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1916 int buflen
= sprintf (buf
, format
, sig
);
1917 char const *sig_desc
= safe_strsignal (sig
);
1918 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1919 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1925 reset_all_sys_modes ();
1928 stuff_buffered_input (stuff
);
1930 inhibit_sentinels
= 1;
1931 kill_buffer_processes (Qnil
);
1932 Fdo_auto_save (Qt
, Qnil
);
1934 #ifdef CLASH_DETECTION
1935 unlock_all_files ();
1938 /* There is a tendency for a SIGIO signal to arrive within exit,
1939 and cause a SIGHUP because the input descriptor is already closed. */
1943 /* Do this only if terminating normally, we want glyph matrices
1944 etc. in a core dump. */
1945 if (sig
== 0 || sig
== SIGTERM
)
1947 check_glyph_memory ();
1948 check_message_stack ();
1956 ns_term_shutdown (sig
);
1960 xml_cleanup_parser ();
1974 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1975 doc
: /* Dump current state of Emacs into executable file FILENAME.
1976 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1977 This is used in the file `loadup.el' when building Emacs.
1979 You must run Emacs in batch mode in order to dump it. */)
1980 (Lisp_Object filename
, Lisp_Object symfile
)
1984 ptrdiff_t count
= SPECPDL_INDEX ();
1988 if (! noninteractive
)
1989 error ("Dumping Emacs works only in batch mode");
1993 /* Warn if the gap between BSS end and heap start is larger than this. */
1994 # define MAX_HEAP_BSS_DIFF (1024*1024)
1996 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1998 fprintf (stderr
, "**************************************************\n");
1999 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2000 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2002 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2003 fprintf (stderr
, "fail because of this. See the section about\n");
2004 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2005 fprintf (stderr
, "**************************************************\n");
2007 #endif /* GNU_LINUX */
2009 /* Bind `command-line-processed' to nil before dumping,
2010 so that the dumped Emacs will process its command line
2011 and set up to work with X windows if appropriate. */
2012 symbol
= intern ("command-line-processed");
2013 specbind (symbol
, Qnil
);
2015 CHECK_STRING (filename
);
2016 filename
= Fexpand_file_name (filename
, Qnil
);
2017 if (!NILP (symfile
))
2019 CHECK_STRING (symfile
);
2020 if (SCHARS (symfile
))
2021 symfile
= Fexpand_file_name (symfile
, Qnil
);
2025 Vpurify_flag
= Qnil
;
2028 set_time_zone_rule (dump_tz
);
2029 #ifndef LOCALTIME_CACHE
2030 /* Force a tz reload, since set_time_zone_rule doesn't. */
2036 /* Tell malloc where start of impure now is. */
2037 /* Also arrange for warnings when nearly out of space. */
2038 #ifndef SYSTEM_MALLOC
2040 /* On Windows, this was done before dumping, and that once suffices.
2041 Meanwhile, my_edata is not valid on Windows. */
2043 extern char my_edata
[];
2044 memory_warnings (my_edata
, malloc_warning
);
2046 #endif /* not WINDOWSNT */
2047 #endif /* not SYSTEM_MALLOC */
2048 #ifdef DOUG_LEA_MALLOC
2049 malloc_state_ptr
= malloc_get_state ();
2052 #ifdef USE_MMAP_FOR_BUFFERS
2055 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2056 #ifdef USE_MMAP_FOR_BUFFERS
2059 #ifdef DOUG_LEA_MALLOC
2060 free (malloc_state_ptr
);
2064 Vlibrary_cache
= Qnil
;
2066 #ifdef HAVE_WINDOW_SYSTEM
2067 reset_image_types ();
2072 return unbind_to (count
, Qnil
);
2075 #endif /* not CANNOT_DUMP */
2078 /* Recover from setlocale (LC_ALL, ""). */
2082 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2083 so that numbers are read and printed properly for Emacs Lisp. */
2084 setlocale (LC_NUMERIC
, "C");
2087 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2090 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2092 if (! EQ (*plocale
, desired_locale
))
2094 *plocale
= desired_locale
;
2095 setlocale (category
, (STRINGP (desired_locale
)
2096 ? SSDATA (desired_locale
)
2101 /* Set system time locale to match Vsystem_time_locale, if possible. */
2103 synchronize_system_time_locale (void)
2105 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2106 Vsystem_time_locale
);
2109 /* Set system messages locale to match Vsystem_messages_locale, if
2112 synchronize_system_messages_locale (void)
2115 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2116 Vsystem_messages_locale
);
2119 #endif /* HAVE_SETLOCALE */
2123 decode_env_path (const char *evarname
, const char *defalt
)
2125 const char *path
, *p
;
2126 Lisp_Object lpath
, element
, tem
;
2129 const char *emacs_dir
= egetenv ("emacs_dir");
2130 static const char *emacs_dir_env
= "%emacs_dir%/";
2131 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2134 /* It's okay to use getenv here, because this function is only used
2135 to initialize variables when Emacs starts up, and isn't called
2138 path
= getenv (evarname
);
2149 /* Ensure values from the environment use the proper directory separator. */
2152 char *path_copy
= alloca (strlen (path
) + 1);
2153 strcpy (path_copy
, path
);
2154 dostounix_filename (path_copy
);
2161 p
= strchr (path
, SEPCHAR
);
2163 p
= path
+ strlen (path
);
2164 element
= (p
- path
? make_string (path
, p
- path
)
2165 : build_string ("."));
2167 /* Relative file names in the default path are interpreted as
2168 being relative to $emacs_dir. */
2169 if (emacs_dir
&& defaulted
2170 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2171 element
= Fexpand_file_name (Fsubstring (element
,
2172 make_number (emacs_dir_len
),
2174 build_string (emacs_dir
));
2177 /* Add /: to the front of the name
2178 if it would otherwise be treated as magic. */
2179 tem
= Ffind_file_name_handler (element
, Qt
);
2181 /* However, if the handler says "I'm safe",
2182 don't bother adding /:. */
2186 prop
= Fget (tem
, intern ("safe-magic"));
2192 element
= concat2 (build_string ("/:"), element
);
2194 lpath
= Fcons (element
, lpath
);
2200 return Fnreverse (lpath
);
2203 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2204 doc
: /* Return non-nil if the current emacs process is a daemon.
2205 If the daemon was given a name argument, return that name. */)
2210 return build_string (daemon_name
);
2217 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2218 doc
: /* Mark the Emacs daemon as being initialized.
2219 This finishes the daemonization process by doing the other half of detaching
2220 from the parent process and its tty file descriptors. */)
2227 error ("This function can only be called if emacs is run as a daemon");
2229 if (daemon_pipe
[1] < 0)
2230 error ("The daemon has already been initialized");
2232 if (NILP (Vafter_init_time
))
2233 error ("This function can only be called after loading the init files");
2235 /* Get rid of stdin, stdout and stderr. */
2236 nfd
= open ("/dev/null", O_RDWR
);
2238 err
|= dup2 (nfd
, 0) < 0;
2239 err
|= dup2 (nfd
, 1) < 0;
2240 err
|= dup2 (nfd
, 2) < 0;
2241 err
|= close (nfd
) != 0;
2243 /* Closing the pipe will notify the parent that it can exit.
2244 FIXME: In case some other process inherited the pipe, closing it here
2245 won't notify the parent because it's still open elsewhere, so we
2246 additionally send a byte, just to make sure the parent really exits.
2247 Instead, we should probably close the pipe in start-process and
2248 call-process to make sure the pipe is never inherited by
2250 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2251 err
|= close (daemon_pipe
[1]) != 0;
2252 /* Set it to an invalid value so we know we've already run this function. */
2253 daemon_pipe
[1] = -1;
2256 error ("I/O error during daemon initialization");
2261 syms_of_emacs (void)
2263 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2264 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2265 DEFSYM (Qkill_emacs
, "kill-emacs");
2268 defsubr (&Sdump_emacs
);
2271 defsubr (&Skill_emacs
);
2273 defsubr (&Sinvocation_name
);
2274 defsubr (&Sinvocation_directory
);
2275 defsubr (&Sdaemonp
);
2276 defsubr (&Sdaemon_initialized
);
2278 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2279 doc
: /* Args passed by shell to Emacs, as a list of strings.
2280 Many arguments are deleted from the list as they are processed. */);
2282 DEFVAR_LISP ("system-type", Vsystem_type
,
2283 doc
: /* The value is a symbol indicating the type of operating system you are using.
2285 `gnu' compiled for a GNU Hurd system.
2286 `gnu/linux' compiled for a GNU/Linux system.
2287 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2288 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2289 `ms-dos' compiled as an MS-DOS application.
2290 `windows-nt' compiled as a native W32 application.
2291 `cygwin' compiled using the Cygwin library.
2292 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2293 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2294 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2295 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2297 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2298 doc
: /* Value is string indicating configuration Emacs was built for.
2299 On MS-Windows, the value reflects the OS flavor and version on which
2300 Emacs is running. */);
2301 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2303 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2304 doc
: /* String containing the configuration options Emacs was built with. */);
2305 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2307 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2308 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2310 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2311 doc
: /* Hook run when `kill-emacs' is called.
2312 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2313 in other similar situations), functions placed on this hook should not
2314 expect to be able to interact with the user. To ask for confirmation,
2315 see `kill-emacs-query-functions' instead.
2317 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2318 `noninteractive' was non-nil. */);
2319 Vkill_emacs_hook
= Qnil
;
2321 DEFVAR_LISP ("path-separator", Vpath_separator
,
2322 doc
: /* String containing the character that separates directories in
2323 search paths, such as PATH and other similar environment variables. */);
2326 Vpath_separator
= make_string (&c
, 1);
2329 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2330 doc
: /* The program name that was used to run Emacs.
2331 Any directory names are omitted. */);
2333 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2334 doc
: /* The directory in which the Emacs executable was found, to run it.
2335 The value is nil if that directory's name is not known. */);
2337 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2338 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2339 In an installed Emacs, this is normally nil. It is non-nil if
2340 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2341 within the variable `invocation-directory' or its parent. For example,
2342 this is the case when running an uninstalled Emacs executable from its
2343 build directory. */);
2344 Vinstallation_directory
= Qnil
;
2346 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2347 doc
: /* System locale for messages. */);
2348 Vsystem_messages_locale
= Qnil
;
2350 DEFVAR_LISP ("previous-system-messages-locale",
2351 Vprevious_system_messages_locale
,
2352 doc
: /* Most recently used system locale for messages. */);
2353 Vprevious_system_messages_locale
= Qnil
;
2355 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2356 doc
: /* System locale for time. */);
2357 Vsystem_time_locale
= Qnil
;
2359 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2360 doc
: /* Most recently used system locale for time. */);
2361 Vprevious_system_time_locale
= Qnil
;
2363 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2364 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2365 Vbefore_init_time
= Qnil
;
2367 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2368 doc
: /* Value of `current-time' after loading the init files.
2369 This is nil during initialization. */);
2370 Vafter_init_time
= Qnil
;
2372 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2373 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2374 inhibit_x_resources
= 0;
2376 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2377 doc
: /* Short copyright string for this version of Emacs. */);
2378 Vemacs_copyright
= build_string (emacs_copyright
);
2380 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2381 doc
: /* Version numbers of this version of Emacs. */);
2382 Vemacs_version
= build_string (emacs_version
);
2384 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2385 doc
: /* Alist of dynamic libraries vs external files implementing them.
2386 Each element is a list (LIBRARY FILE...), where the car is a symbol
2387 representing a supported external library, and the rest are strings giving
2388 alternate filenames for that library.
2390 Emacs tries to load the library from the files in the order they appear on
2391 the list; if none is loaded, the running session of Emacs won't have access
2394 Note that image types `pbm' and `xbm' do not need entries in this variable
2395 because they do not depend on external libraries and are always available.
2397 Also note that this is not a generic facility for accessing external
2398 libraries; only those already known by Emacs will be loaded. */);
2399 Vdynamic_library_alist
= Qnil
;
2400 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2403 Vlibrary_cache
= Qnil
;
2404 staticpro (&Vlibrary_cache
);
2407 /* Make sure IS_DAEMON starts up as false. */