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 <close-stream.h>
31 #include <ignore-value.h>
41 #if defined WINDOWSNT || defined HAVE_NTGUI
42 #include "w32select.h"
46 #if defined HAVE_NTGUI && defined CYGWIN
50 #ifdef HAVE_WINDOW_SYSTEM
52 #endif /* HAVE_WINDOW_SYSTEM */
54 #ifdef NS_IMPL_GNUSTEP
55 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
56 #include <GNUstepBase/GSConfig.h>
60 #include "intervals.h"
61 #include "character.h"
67 #include "blockinput.h"
68 #include "syssignal.h"
71 #include "termhooks.h"
79 #if (defined PROFILING \
80 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
81 # include <sys/gmon.h>
82 extern void moncontrol (int mode
);
91 #include <sys/resource.h>
94 #ifdef HAVE_PERSONALITY_LINUX32
95 #include <sys/personality.h>
102 static const char emacs_version
[] = VERSION
;
103 static const char emacs_copyright
[] = COPYRIGHT
;
105 /* Empty lisp strings. To avoid having to build any others. */
106 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
109 /* Cache for externally loaded libraries. */
110 Lisp_Object Vlibrary_cache
;
113 /* Set after Emacs has started up the first time.
114 Prevents reinitialization of the Lisp world and keymaps
115 on subsequent starts. */
119 extern void unexec_init_emacs_zone (void);
122 #ifdef DOUG_LEA_MALLOC
123 /* Preserves a pointer to the memory allocated that copies that
124 static data inside glibc's malloc. */
125 static void *malloc_state_ptr
;
126 /* From glibc, a routine that returns a copy of the malloc internal state. */
127 extern void *malloc_get_state (void);
128 /* From glibc, a routine that overwrites the malloc internal state. */
129 extern int malloc_set_state (void*);
130 /* True if the MALLOC_CHECK_ environment variable was set while
131 dumping. Used to work around a bug in glibc's malloc. */
132 static bool malloc_using_checking
;
135 Lisp_Object Qfile_name_handler_alist
;
137 Lisp_Object Qrisky_local_variable
;
139 Lisp_Object Qkill_emacs
;
141 /* If true, Emacs should not attempt to use a window-specific code,
142 but instead should use the virtual terminal under which it was started. */
143 bool inhibit_window_system
;
145 /* If true, a filter or a sentinel is running. Tested to save the match
146 data on the first attempt to change it inside asynchronous code. */
147 bool running_asynch_code
;
149 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
150 /* If true, -d was specified, meaning we're using some window system. */
154 /* An address near the bottom of the stack.
155 Tells GC how to save a copy of the stack. */
158 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
159 /* The address where the heap starts (from the first sbrk (0) call). */
160 static void *my_heap_start
;
164 /* The gap between BSS end and heap start as far as we can tell. */
165 static uprintmax_t heap_bss_diff
;
168 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
171 On Cocoa, CoreFoundation lib fails in forked process:
172 http://developer.apple.com/ReleaseNotes/
173 CoreFoundation/CoreFoundation.html)
175 On Windows, a Cygwin fork child cannot access the USER subsystem.
177 We mark being in the exec'd process by a daemon name argument of
178 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
179 NAME is the original daemon name, if any. */
180 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
181 # define DAEMON_MUST_EXEC
184 /* True means running Emacs without interactive terminal. */
187 /* True means remove site-lisp directories from load-path. */
190 /* Name for the server started by the daemon.*/
191 static char *daemon_name
;
193 /* Pipe used to send exit notification to the daemon parent at
197 /* Save argv and argc. */
201 static void sort_args (int argc
, char **argv
);
202 static void syms_of_emacs (void);
204 /* MSVC needs each string be shorter than 2048 bytes, so the usage
205 strings below are split to not overflow this limit. */
207 Usage: %s [OPTION-OR-FILENAME]...\n\
209 Run Emacs, the extensible, customizable, self-documenting real-time\n\
210 display editor. The recommended way to start Emacs for normal editing\n\
211 is with no options at all.\n\
213 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
214 read the main documentation for these command-line arguments.\n\
216 Initialization options:\n\
218 --batch do not do interactive display; implies -q\n\
219 --chdir DIR change to directory DIR\n\
220 --daemon start a server in the background\n\
221 --debug-init enable Emacs Lisp debugger for init file\n\
222 --display, -d DISPLAY use X server DISPLAY\n\
223 --no-desktop do not load a saved desktop\n\
224 --no-init-file, -q load neither ~/.emacs nor default.el\n\
225 --no-shared-memory, -nl do not use shared memory\n\
226 --no-site-file do not load site-start.el\n\
227 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
228 --no-splash do not display a splash screen on startup\n\
229 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
230 --quick, -Q equivalent to:\n\
231 -q --no-site-file --no-site-lisp --no-splash\n\
232 --script FILE run FILE as an Emacs Lisp script\n\
233 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
234 --user, -u USER load ~USER/.emacs instead of your own\n\
240 FILE visit FILE using find-file\n\
241 +LINE go to line LINE in next FILE\n\
242 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
243 --directory, -L DIR add DIR to variable load-path\n\
244 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
245 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
246 --file FILE visit FILE using find-file\n\
247 --find-file FILE visit FILE using find-file\n\
248 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
249 --insert FILE insert contents of FILE into current buffer\n\
250 --kill exit without asking for confirmation\n\
251 --load, -l FILE load Emacs Lisp FILE using the load function\n\
252 --visit FILE visit FILE using find-file\n\
258 --background-color, -bg COLOR window background color\n\
259 --basic-display, -D disable many display features;\n\
260 used for debugging Emacs\n\
261 --border-color, -bd COLOR main border color\n\
262 --border-width, -bw WIDTH width of main border\n\
263 --color, --color=MODE override color mode for character terminals;\n\
264 MODE defaults to `auto', and\n\
265 can also be `never', `always',\n\
266 or a mode name like `ansi8'\n\
267 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
268 --font, -fn FONT default font; must be fixed-width\n\
269 --foreground-color, -fg COLOR window foreground color\n\
270 --fullheight, -fh make the first frame high as the screen\n\
271 --fullscreen, -fs make the first frame fullscreen\n\
272 --fullwidth, -fw make the first frame wide as the screen\n\
273 --maximized, -mm make the first frame maximized\n\
274 --geometry, -g GEOMETRY window geometry\n\
275 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
276 --iconic start Emacs in iconified state\n\
277 --internal-border, -ib WIDTH width between text and main border\n\
278 --line-spacing, -lsp PIXELS additional space to put between lines\n\
279 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
280 --name NAME title for initial Emacs frame\n\
281 --no-blinking-cursor, -nbc disable blinking cursor\n\
282 --reverse-video, -r, -rv switch foreground and background\n\
283 --title, -T TITLE title for initial Emacs frame\n\
284 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
285 --xrm XRESOURCES set additional X resources\n\
286 --parent-id XID set parent window\n\
287 --help display this help and exit\n\
288 --version output version information and exit\n\
292 You can generally also specify long option names with a single -; for\n\
293 example, -batch as well as --batch. You can use any unambiguous\n\
294 abbreviation for a --option.\n\
296 Various environment variables and window system resources also affect\n\
297 Emacs' operation. See the main documentation.\n\
299 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
300 section of the Emacs manual or the file BUGS.\n"
303 /* True if handling a fatal error already. */
304 bool fatal_error_in_progress
;
307 /* NS autrelease pool, for memory management. */
308 static void *ns_pool
;
313 /* Report a fatal error due to signal SIG, output a backtrace of at
314 most BACKTRACE_LIMIT lines, and exit. */
316 terminate_due_to_signal (int sig
, int backtrace_limit
)
318 signal (sig
, SIG_DFL
);
319 totally_unblock_input ();
321 /* If fatal error occurs in code below, avoid infinite recursion. */
322 if (! fatal_error_in_progress
)
324 fatal_error_in_progress
= 1;
326 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
327 Fkill_emacs (make_number (sig
));
329 shut_down_emacs (sig
, Qnil
);
330 emacs_backtrace (backtrace_limit
);
333 /* Signal the same code; this time it will really be fatal.
334 Since we're in a signal handler, the signal is blocked, so we
335 have to unblock it if we want to really receive it. */
339 sigemptyset (&unblocked
);
340 sigaddset (&unblocked
, sig
);
341 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
347 /* This shouldn't be executed, but it prevents a warning. */
353 /* Handler for SIGDANGER. */
355 handle_danger_signal (int sig
)
357 malloc_warning ("Operating system warns that virtual memory is running low.\n");
359 /* It might be unsafe to call do_auto_save now. */
360 force_auto_save_soon ();
364 deliver_danger_signal (int sig
)
366 deliver_process_signal (sig
, handle_danger_signal
);
370 /* Code for dealing with Lisp access to the Unix command line. */
373 init_cmdargs (int argc
, char **argv
, int skip_args
)
376 Lisp_Object name
, dir
, handler
;
377 ptrdiff_t count
= SPECPDL_INDEX ();
378 Lisp_Object raw_name
;
383 raw_name
= build_string (argv
[0]);
385 /* Add /: to the front of the name
386 if it would otherwise be treated as magic. */
387 handler
= Ffind_file_name_handler (raw_name
, Qt
);
388 if (! NILP (handler
))
389 raw_name
= concat2 (build_string ("/:"), raw_name
);
391 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
392 Vinvocation_directory
= Ffile_name_directory (raw_name
);
394 /* If we got no directory in argv[0], search PATH to find where
395 Emacs actually came from. */
396 if (NILP (Vinvocation_directory
))
399 int yes
= openp (Vexec_path
, Vinvocation_name
,
400 Vexec_suffixes
, &found
, make_number (X_OK
));
403 /* Add /: to the front of the name
404 if it would otherwise be treated as magic. */
405 handler
= Ffind_file_name_handler (found
, Qt
);
406 if (! NILP (handler
))
407 found
= concat2 (build_string ("/:"), found
);
408 Vinvocation_directory
= Ffile_name_directory (found
);
412 if (!NILP (Vinvocation_directory
)
413 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
414 /* Emacs was started with relative path, like ./emacs.
416 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
418 Vinstallation_directory
= Qnil
;
420 if (!NILP (Vinvocation_directory
))
422 dir
= Vinvocation_directory
;
424 /* If we are running from the build directory, set DIR to the
425 src subdirectory of the Emacs tree, like on Posix
427 if (SBYTES (dir
) > sizeof ("/i386/") - 1
428 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
430 dir
= Fexpand_file_name (build_string ("../.."), dir
);
431 #else /* !WINDOWSNT */
433 name
= Fexpand_file_name (Vinvocation_name
, dir
);
436 Lisp_Object tem
, lib_src_exists
;
437 Lisp_Object etc_exists
, info_exists
;
439 /* See if dir contains subdirs for use by Emacs.
440 Check for the ones that would exist in a build directory,
441 not including lisp and info. */
442 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
443 lib_src_exists
= Ffile_exists_p (tem
);
446 /* MSDOS installations frequently remove lib-src, but we still
447 must set installation-directory, or else info won't find
448 its files (it uses the value of installation-directory). */
449 tem
= Fexpand_file_name (build_string ("info"), dir
);
450 info_exists
= Ffile_exists_p (tem
);
455 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
457 tem
= Fexpand_file_name (build_string ("etc"), dir
);
458 etc_exists
= Ffile_exists_p (tem
);
459 if (!NILP (etc_exists
))
461 Vinstallation_directory
462 = Ffile_name_as_directory (dir
);
467 /* See if dir's parent contains those subdirs. */
468 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
469 lib_src_exists
= Ffile_exists_p (tem
);
473 /* See the MSDOS commentary above. */
474 tem
= Fexpand_file_name (build_string ("../info"), dir
);
475 info_exists
= Ffile_exists_p (tem
);
480 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
482 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
483 etc_exists
= Ffile_exists_p (tem
);
484 if (!NILP (etc_exists
))
486 tem
= Fexpand_file_name (build_string (".."), dir
);
487 Vinstallation_directory
488 = Ffile_name_as_directory (tem
);
493 /* If the Emacs executable is actually a link,
494 next try the dir that the link points into. */
495 tem
= Ffile_symlink_p (name
);
498 name
= Fexpand_file_name (tem
, dir
);
499 dir
= Ffile_name_directory (name
);
506 Vcommand_line_args
= Qnil
;
508 for (i
= argc
- 1; i
>= 0; i
--)
510 if (i
== 0 || i
> skip_args
)
511 /* For the moment, we keep arguments as is in unibyte strings.
512 They are decoded in the function command-line after we know
513 locale-coding-system. */
515 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
519 unbind_to (count
, Qnil
);
522 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
523 doc
: /* Return the program name that was used to run Emacs.
524 Any directory names are omitted. */)
527 return Fcopy_sequence (Vinvocation_name
);
530 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
532 doc
: /* Return the directory name in which the Emacs executable was located. */)
535 return Fcopy_sequence (Vinvocation_directory
);
540 /* A valid but unlikely value for the TZ environment value.
541 It is OK (though a bit slower) if the user actually chooses this value. */
542 static char dump_tz
[] = "UtC0";
545 #ifndef ORDINARY_LINK
546 /* We don't include crtbegin.o and crtend.o in the link,
547 so these functions and variables might be missed.
548 Provide dummy definitions to avoid error.
549 (We don't have any real constructors or destructors.) */
552 /* Define a dummy function F. Declare F too, to pacify gcc
553 -Wmissing-prototypes. */
554 #define DEFINE_DUMMY_FUNCTION(f) \
555 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
557 #ifndef GCC_CTORS_IN_LIBC
558 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
559 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
560 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
561 /* GNU/Linux has a bug in its library; avoid an error. */
563 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
565 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
566 #endif /* GCC_CTORS_IN_LIBC */
567 DEFINE_DUMMY_FUNCTION (__main
)
568 #endif /* __GNUC__ */
569 #endif /* ORDINARY_LINK */
571 /* Test whether the next argument in ARGV matches SSTR or a prefix of
572 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
573 (the argument is supposed to have a value) store in *VALPTR either
574 the next argument or the portion of this one after the equal sign.
575 ARGV is read starting at position *SKIPPTR; this index is advanced
576 by the number of arguments used.
578 Too bad we can't just use getopt for all of this, but we don't have
579 enough information to do it right. */
582 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
583 int minlen
, char **valptr
, int *skipptr
)
589 /* Don't access argv[argc]; give up in advance. */
590 if (argc
<= *skipptr
+ 1)
593 arg
= argv
[*skipptr
+1];
596 if (strcmp (arg
, sstr
) == 0)
600 *valptr
= argv
[*skipptr
+2];
607 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
608 ? p
- arg
: strlen (arg
));
609 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
611 else if (valptr
== NULL
)
622 else if (argv
[*skipptr
+2] != NULL
)
624 *valptr
= argv
[*skipptr
+2];
634 #ifdef DOUG_LEA_MALLOC
636 /* malloc can be invoked even before main (e.g. by the dynamic
637 linker), so the dumped malloc state must be restored as early as
638 possible using this special hook. */
641 malloc_initialize_hook (void)
645 if (!malloc_using_checking
)
646 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
647 ignored if the heap to be restored was constructed without
648 malloc checking. Can't use unsetenv, since that calls malloc. */
652 for (p
= environ
; p
&& *p
; p
++)
653 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
662 malloc_set_state (malloc_state_ptr
);
663 #ifndef XMALLOC_OVERRUN_CHECK
664 free (malloc_state_ptr
);
669 if (my_heap_start
== 0)
670 my_heap_start
= sbrk (0);
671 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
675 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
677 #endif /* DOUG_LEA_MALLOC */
679 /* Close standard output and standard error, reporting any write
680 errors as best we can. This is intended for use with atexit. */
682 close_output_streams (void)
684 if (close_stream (stdout
) != 0)
686 fprintf (stderr
, "Write error to standard output: %s\n",
689 _exit (EXIT_FAILURE
);
692 if (close_stream (stderr
) != 0)
693 _exit (EXIT_FAILURE
);
698 main (int argc
, char **argv
)
703 char stack_bottom_variable
;
704 bool do_initial_setlocale
;
707 #ifdef HAVE_SETRLIMIT
713 #ifdef DAEMON_MUST_EXEC
722 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
723 /* This is used by the Cygwin build. */
724 setenv ("G_SLICE", "always-malloc", 1);
730 extern char my_endbss
[];
731 extern char *my_endbss_static
;
733 if (my_heap_start
== 0)
734 my_heap_start
= sbrk (0);
736 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
740 #ifdef RUN_TIME_REMAP
742 run_time_remap (argv
[0]);
745 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
748 unexec_init_emacs_zone ();
751 atexit (close_output_streams
);
753 sort_args (argc
, argv
);
755 while (argv
[argc
]) argc
++;
757 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
759 const char *version
, *copyright
;
762 Lisp_Object tem
, tem2
;
763 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
764 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
767 fprintf (stderr
, "Invalid value of `emacs-version'\n");
772 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
777 version
= SSDATA (tem
);
778 copyright
= SSDATA (tem2
);
783 version
= emacs_version
;
784 copyright
= emacs_copyright
;
786 printf ("GNU Emacs %s\n", version
);
787 printf ("%s\n", copyright
);
788 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
789 printf ("You may redistribute copies of Emacs\n");
790 printf ("under the terms of the GNU General Public License.\n");
791 printf ("For more information about these matters, ");
792 printf ("see the file named COPYING.\n");
796 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
797 if (chdir (ch_to_dir
) == -1)
799 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
800 argv
[0], ch_to_dir
, strerror (errno
));
804 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
805 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
807 #ifdef HAVE_PERSONALITY_LINUX32
808 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
810 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
811 /* Set this so we only do this once. */
814 /* A flag to turn off address randomization which is introduced
815 in linux kernel shipped with fedora core 4 */
816 #define ADD_NO_RANDOMIZE 0x0040000
817 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
818 #undef ADD_NO_RANDOMIZE
820 execvp (argv
[0], argv
);
822 /* If the exec fails, try to dump anyway. */
825 #endif /* HAVE_PERSONALITY_LINUX32 */
827 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
828 /* Extend the stack space available.
829 Don't do that if dumping, since some systems (e.g. DJGPP)
830 might define a smaller stack limit at that time. */
833 && (!noninteractive
|| initialized
)
835 && !getrlimit (RLIMIT_STACK
, &rlim
))
838 extern size_t re_max_failures
;
839 /* Approximate the amount regex.c needs per unit of re_max_failures. */
840 int ratio
= 20 * sizeof (char *);
841 /* Then add 33% to cover the size of the smaller stacks that regex.c
842 successively allocates and discards, on its way to the maximum. */
844 /* Add in some extra to cover
845 what we're likely to use for other reasons. */
846 newlim
= re_max_failures
* ratio
+ 200000;
848 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
849 stack allocation routine for new process that the allocation
850 fails if stack limit is not on page boundary. So, round up the
851 new limit to page boundary. */
852 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
854 if (newlim
> rlim
.rlim_max
)
856 newlim
= rlim
.rlim_max
;
857 /* Don't let regex.c overflow the stack we have. */
858 re_max_failures
= (newlim
- 200000) / ratio
;
860 if (rlim
.rlim_cur
< newlim
)
861 rlim
.rlim_cur
= newlim
;
863 setrlimit (RLIMIT_STACK
, &rlim
);
865 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
867 /* Record (approximately) where the stack begins. */
868 stack_bottom
= &stack_bottom_variable
;
872 #ifndef SYSTEM_MALLOC
873 /* Arrange to get warning messages as memory fills up. */
874 memory_warnings (0, malloc_warning
);
876 /* Call malloc at least once, to run malloc_initialize_hook.
877 Also call realloc and free for consistency. */
878 free (realloc (malloc (4), 4));
880 #endif /* not SYSTEM_MALLOC */
882 #if defined (MSDOS) || defined (WINDOWSNT)
883 /* We do all file input/output as binary files. When we need to translate
884 newlines, we do that manually. */
886 #endif /* MSDOS || WINDOWSNT */
889 if (!isatty (fileno (stdin
)))
890 setmode (fileno (stdin
), O_BINARY
);
891 if (!isatty (fileno (stdout
)))
894 setmode (fileno (stdout
), O_BINARY
);
898 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
899 The build procedure uses this while dumping, to ensure that the
900 dumped Emacs does not have its system locale tables initialized,
901 as that might cause screwups when the dumped Emacs starts up. */
903 char *lc_all
= getenv ("LC_ALL");
904 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
907 /* Set locale now, so that initial error messages are localized properly.
908 fixup_locale must wait until later, since it builds strings. */
909 if (do_initial_setlocale
)
910 setlocale (LC_ALL
, "");
912 inhibit_window_system
= 0;
914 /* Handle the -t switch, which specifies filename to use as terminal. */
918 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
923 result
= emacs_open (term
, O_RDWR
, 0);
924 if (result
< 0 || dup (0) < 0)
926 char *errstring
= strerror (errno
);
927 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
932 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
935 fprintf (stderr
, "Using %s\n", term
);
936 #ifdef HAVE_WINDOW_SYSTEM
937 inhibit_window_system
= 1; /* -t => -nw */
944 /* Command line option --no-windows is deprecated and thus not mentioned
945 in the manual and usage information. */
946 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
947 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
948 inhibit_window_system
= 1;
950 /* Handle the -batch switch, which means don't do interactive display. */
952 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
955 Vundo_outer_limit
= Qnil
;
957 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
959 noninteractive
= 1; /* Set batch mode. */
960 /* Convert --script to -scriptload, un-skip it, and sort again
961 so that it will be handled in proper sequence. */
962 /* FIXME broken for --script=FILE - is that supposed to work? */
963 argv
[skip_args
- 1] = (char *) "-scriptload";
965 sort_args (argc
, argv
);
968 /* Handle the --help option, which gives a usage message. */
969 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
971 printf (USAGE1
, argv
[0], USAGE2
);
977 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
978 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
983 /* Start as a daemon: fork a new child process which will run the
984 rest of the initialization code, then exit.
986 Detaching a daemon requires the following steps:
990 - close the tty file-descriptors
992 We only want to do the last 2 steps once the daemon is ready to
993 serve requests, i.e. after loading .emacs (initialization).
994 OTOH initialization may start subprocesses (e.g. ispell) and these
995 should be run from the proper process (the one that will end up
996 running as daemon) and with the proper "session id" in order for
997 them to keep working after detaching, so fork and setsid need to be
998 performed before initialization.
1000 We want to avoid exiting before the server socket is ready, so
1001 use a pipe for synchronization. The parent waits for the child
1002 to close its end of the pipe (using `daemon-initialized')
1004 if (pipe (daemon_pipe
) == -1)
1006 fprintf (stderr
, "Cannot pipe!\n");
1010 #ifndef DAEMON_MUST_EXEC
1012 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1013 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1014 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1015 #endif /* USE_GTK */
1017 #else /* DAEMON_MUST_EXEC */
1018 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1019 f
= fork (); /* in orig */
1021 f
= 0; /* in exec'd */
1022 #endif /* !DAEMON_MUST_EXEC */
1028 /* Close unused writing end of the pipe. */
1029 close (daemon_pipe
[1]);
1031 /* Just wait for the child to close its end of the pipe. */
1034 retval
= read (daemon_pipe
[0], &buf
, 1);
1036 while (retval
== -1 && errno
== EINTR
);
1040 fprintf (stderr
, "Error reading status from child\n");
1043 else if (retval
== 0)
1045 fprintf (stderr
, "Error: server did not start correctly\n");
1049 close (daemon_pipe
[0]);
1054 fprintf (stderr
, "Cannot fork!\n");
1058 #ifdef DAEMON_MUST_EXEC
1060 /* In orig process, forked as child, OR in exec'd. */
1061 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1062 { /* In orig, child: now exec w/special daemon name. */
1065 snprintf (fdStr
, sizeof fdStr
,
1066 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1067 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1069 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1071 fprintf (stderr
, "daemon: child name too long\n");
1075 argv
[skip_args
] = fdStr
;
1077 execv (argv
[0], argv
);
1078 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1082 /* In exec'd: parse special dname into pipe and name info. */
1083 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1084 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1086 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1089 dname_arg2
[0] = '\0';
1090 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1092 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1094 #endif /* DAEMON_MUST_EXEC */
1097 daemon_name
= xstrdup (dname_arg
);
1098 /* Close unused reading end of the pipe. */
1099 close (daemon_pipe
[0]);
1100 /* Make sure that the used end of the pipe is closed on exec, so
1101 that it is not accessible to programs started from .emacs. */
1102 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1106 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1111 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1112 if (! noninteractive
)
1114 extern void malloc_enable_thread (void);
1116 malloc_enable_thread ();
1120 init_signals (dumping
);
1122 noninteractive1
= noninteractive
;
1124 /* Perform basic initializations (not merely interning symbols). */
1131 init_charset_once ();
1132 init_coding_once ();
1133 init_syntax_once (); /* Create standard syntax table. */
1134 init_category_once (); /* Create standard category table. */
1135 /* Must be done before init_buffer. */
1136 init_casetab_once ();
1137 init_buffer_once (); /* Create buffer table and some buffers. */
1138 init_minibuf_once (); /* Create list of minibuffers. */
1139 /* Must precede init_window_once. */
1141 /* Call syms_of_xfaces before init_window_once because that
1142 function creates Vterminal_frame. Termcap frames now use
1143 faces, and the face implementation uses some symbols as
1146 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1147 be better to arrange things not to have this dependency. */
1149 /* Call syms_of_keyboard before init_window_once because
1150 keyboard sets up symbols that include some face names that
1151 the X support will want to use. This can happen when
1152 CANNOT_DUMP is defined. */
1153 syms_of_keyboard ();
1155 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1158 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1160 /* Before syms_of_coding because it initializes Qcharsetp. */
1162 /* Before init_window_once, because it sets up the
1163 Vcoding_system_hash_table. */
1164 syms_of_coding (); /* This should be after syms_of_fileio. */
1166 init_window_once (); /* Init the window system. */
1167 #ifdef HAVE_WINDOW_SYSTEM
1168 init_fringe_once (); /* Swap bitmaps if necessary. */
1169 #endif /* HAVE_WINDOW_SYSTEM */
1174 if (do_initial_setlocale
)
1177 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1178 Vsystem_time_locale
= Vprevious_system_time_locale
;
1183 running_asynch_code
= 0;
1187 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1190 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1193 ns_pool
= ns_alloc_autorelease_pool ();
1194 if (!noninteractive
)
1196 #ifdef NS_IMPL_COCOA
1197 if (skip_args
< argc
)
1199 /* FIXME: Do the right thing if getenv returns NULL, or if
1201 if (!strncmp (argv
[skip_args
], "-psn", 4))
1204 chdir (getenv ("HOME"));
1206 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1209 chdir (getenv ("HOME"));
1214 #endif /* HAVE_NS */
1216 #ifdef HAVE_X_WINDOWS
1217 /* Stupid kludge to catch command-line display spec. We can't
1218 handle this argument entirely in window system dependent code
1219 because we don't even know which window system dependent code
1220 to run until we've recognized this argument. */
1222 char *displayname
= 0;
1223 int count_before
= skip_args
;
1225 /* Skip any number of -d options, but only use the last one. */
1228 int count_before_this
= skip_args
;
1230 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1232 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1237 count_before
= count_before_this
;
1240 /* If we have the form --display=NAME,
1241 convert it into -d name.
1242 This requires inserting a new element into argv. */
1243 if (displayname
&& count_before
< skip_args
)
1245 if (skip_args
== count_before
+ 1)
1247 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1248 (argc
- (count_before
+ 2)) * sizeof *argv
);
1249 argv
[count_before
+ 2] = displayname
;
1252 argv
[count_before
+ 1] = (char *) "-d";
1257 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1258 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1262 /* Don't actually discard this arg. */
1263 skip_args
= count_before
;
1265 #else /* !HAVE_X_WINDOWS */
1268 int count_before
= skip_args
;
1270 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1271 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1274 skip_args
= count_before
;
1278 /* argmatch must not be used after here,
1279 except when building temacs
1280 because the -d argument has not been skipped in skip_args. */
1283 /* Call early 'cause init_environment needs it. */
1285 /* Set defaults for several environment variables. */
1287 init_environment (argc
, argv
, skip_args
);
1294 /* Initialize environment from registry settings. */
1295 init_environment (argv
);
1296 init_ntproc (dumping
); /* must precede init_editfns. */
1299 /* Initialize and GC-protect Vinitial_environment and
1300 Vprocess_environment before set_initial_environment fills them
1303 syms_of_callproc ();
1304 /* egetenv is a pretty low-level facility, which may get called in
1305 many circumstances; it seems flimsy to put off initializing it
1306 until calling init_callproc. Do not do it when dumping. */
1308 set_initial_environment ();
1310 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1311 if this is not done. Do it after set_global_environment so that we
1312 don't pollute Vglobal_environment. */
1313 /* Setting LANG here will defeat the startup locale processing... */
1318 init_buffer (); /* Init default directory of main buffer. */
1320 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1321 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1325 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1326 Lisp_Object old_log_max
;
1327 old_log_max
= Vmessage_log_max
;
1328 XSETFASTINT (Vmessage_log_max
, 0);
1329 message_dolog ("", 0, 1, 0);
1330 Vmessage_log_max
= old_log_max
;
1333 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1336 /* Check to see if Emacs has been installed correctly. */
1337 check_windows_init_file ();
1340 /* Intern the names of all standard functions and variables;
1341 define standard keys. */
1345 /* The basic levels of Lisp must come first. Note that
1346 syms_of_data and some others have already been called. */
1352 syms_of_floatfns ();
1355 syms_of_bytecode ();
1357 syms_of_casefiddle ();
1359 syms_of_category ();
1361 syms_of_character ();
1368 syms_of_filelock ();
1371 /* syms_of_keymap (); */
1379 syms_of_terminal ();
1385 syms_of_textprop ();
1386 syms_of_composite ();
1389 #endif /* WINDOWSNT */
1390 #if defined CYGWIN && defined HAVE_NTGUI
1396 #ifdef HAVE_WINDOW_SYSTEM
1399 #endif /* HAVE_WINDOW_SYSTEM */
1400 #ifdef HAVE_X_WINDOWS
1405 syms_of_xsettings ();
1412 #endif /* HAVE_X_WINDOWS */
1425 #endif /* HAVE_NTGUI */
1427 #if defined WINDOWSNT || defined HAVE_NTGUI
1428 syms_of_w32select ();
1435 syms_of_win16select ();
1442 syms_of_nsselect ();
1444 #endif /* HAVE_NS */
1451 syms_of_dbusbind ();
1452 #endif /* HAVE_DBUS */
1456 #endif /* WINDOWSNT */
1458 syms_of_profiler ();
1460 keys_of_casefiddle ();
1463 keys_of_keyboard ();
1469 /* Initialization that must be done even if the global variable
1470 initialized is non zero. */
1472 globals_of_w32font ();
1473 globals_of_w32fns ();
1474 globals_of_w32menu ();
1475 #endif /* HAVE_NTGUI */
1477 #if defined WINDOWSNT || defined HAVE_NTGUI
1478 globals_of_w32select ();
1484 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1485 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1486 init_keyboard (); /* This too must precede init_sys_modes. */
1487 if (!noninteractive
)
1488 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1490 #ifdef HAVE_WINDOW_SYSTEM
1492 #endif /* HAVE_WINDOW_SYSTEM */
1500 /* Handle -l loadup, args passed by Makefile. */
1501 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1502 Vtop_level
= Fcons (intern_c_string ("load"),
1503 Fcons (build_string (file
), Qnil
));
1504 /* Unless next switch is -nl, load "loadup.el" first thing. */
1506 Vtop_level
= Fcons (intern_c_string ("load"),
1507 Fcons (build_string ("loadup.el"), Qnil
));
1514 /* If the execution TZ happens to be the same as the dump TZ,
1515 change it to some other value and then change it back,
1516 to force the underlying implementation to reload the TZ info.
1517 This is needed on implementations that load TZ info from files,
1518 since the TZ file contents may differ between dump and execution. */
1519 char *tz
= getenv ("TZ");
1520 if (tz
&& !strcmp (tz
, dump_tz
))
1530 /* Set up for profiling. This is known to work on FreeBSD,
1531 GNU/Linux and MinGW. It might work on some other systems too.
1532 Give it a try and tell us if it works on your system. To compile
1533 for profiling, use the configure option --enable-profiling. */
1534 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1539 extern unsigned char etext
asm ("etext");
1545 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1554 #ifdef LOCALTIME_CACHE
1555 /* Some versions of localtime have a bug. They cache the value of the time
1556 zone rather than looking it up every time. Since localtime() is
1557 called to bolt the undumping time into the undumped emacs, this
1558 results in localtime ignoring the TZ environment variable.
1559 This flushes the new TZ value into localtime. */
1561 #endif /* defined (LOCALTIME_CACHE) */
1563 /* Enter editor command loop. This never returns. */
1569 /* Sort the args so we can find the most important ones
1570 at the beginning of argv. */
1572 /* First, here's a table of all the standard options. */
1574 struct standard_args
1577 const char *longname
;
1582 static const struct standard_args standard_args
[] =
1584 { "-version", "--version", 150, 0 },
1585 { "-chdir", "--chdir", 130, 1 },
1586 { "-t", "--terminal", 120, 1 },
1587 { "-nw", "--no-window-system", 110, 0 },
1588 { "-nw", "--no-windows", 110, 0 },
1589 { "-batch", "--batch", 100, 0 },
1590 { "-script", "--script", 100, 1 },
1591 { "-daemon", "--daemon", 99, 0 },
1592 { "-help", "--help", 90, 0 },
1593 { "-nl", "--no-loadup", 70, 0 },
1594 { "-nsl", "--no-site-lisp", 65, 0 },
1595 /* -d must come last before the options handled in startup.el. */
1596 { "-d", "--display", 60, 1 },
1597 { "-display", 0, 60, 1 },
1598 /* Now for the options handled in `command-line' (startup.el). */
1599 /* (Note that to imply -nsl, -Q is partially handled here.) */
1600 { "-Q", "--quick", 55, 0 },
1601 { "-quick", 0, 55, 0 },
1602 { "-q", "--no-init-file", 50, 0 },
1603 { "-no-init-file", 0, 50, 0 },
1604 { "-no-site-file", "--no-site-file", 40, 0 },
1605 { "-u", "--user", 30, 1 },
1606 { "-user", 0, 30, 1 },
1607 { "-debug-init", "--debug-init", 20, 0 },
1608 { "-iconic", "--iconic", 15, 0 },
1609 { "-D", "--basic-display", 12, 0},
1610 { "-basic-display", 0, 12, 0},
1611 { "-nbc", "--no-blinking-cursor", 12, 0 },
1612 /* Now for the options handled in `command-line-1' (startup.el). */
1613 { "-nbi", "--no-bitmap-icon", 10, 0 },
1614 { "-bg", "--background-color", 10, 1 },
1615 { "-background", 0, 10, 1 },
1616 { "-fg", "--foreground-color", 10, 1 },
1617 { "-foreground", 0, 10, 1 },
1618 { "-bd", "--border-color", 10, 1 },
1619 { "-bw", "--border-width", 10, 1 },
1620 { "-ib", "--internal-border", 10, 1 },
1621 { "-ms", "--mouse-color", 10, 1 },
1622 { "-cr", "--cursor-color", 10, 1 },
1623 { "-fn", "--font", 10, 1 },
1624 { "-font", 0, 10, 1 },
1625 { "-fs", "--fullscreen", 10, 0 },
1626 { "-fw", "--fullwidth", 10, 0 },
1627 { "-fh", "--fullheight", 10, 0 },
1628 { "-mm", "--maximized", 10, 0 },
1629 { "-g", "--geometry", 10, 1 },
1630 { "-geometry", 0, 10, 1 },
1631 { "-T", "--title", 10, 1 },
1632 { "-title", 0, 10, 1 },
1633 { "-name", "--name", 10, 1 },
1634 { "-xrm", "--xrm", 10, 1 },
1635 { "-parent-id", "--parent-id", 10, 1 },
1636 { "-r", "--reverse-video", 5, 0 },
1638 { "-reverse", 0, 5, 0 },
1639 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1640 { "-vb", "--vertical-scroll-bars", 5, 0 },
1641 { "-color", "--color", 5, 0},
1642 { "-no-splash", "--no-splash", 3, 0 },
1643 { "-no-desktop", "--no-desktop", 3, 0 },
1645 { "-NSAutoLaunch", 0, 5, 1 },
1646 { "-NXAutoLaunch", 0, 5, 1 },
1647 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1648 { "-_NSMachLaunch", 0, 85, 1 },
1649 { "-MachLaunch", 0, 85, 1 },
1650 { "-macosx", 0, 85, 0 },
1651 { "-NSHost", 0, 85, 1 },
1653 /* These have the same priority as ordinary file name args,
1654 so they are not reordered with respect to those. */
1655 { "-L", "--directory", 0, 1 },
1656 { "-directory", 0, 0, 1 },
1657 { "-l", "--load", 0, 1 },
1658 { "-load", 0, 0, 1 },
1659 /* This has no longname, because using --scriptload confuses sort_args,
1660 because then the --script long option seems to match twice; ie
1661 you can't have a long option which is a prefix of another long
1662 option. In any case, this is entirely an internal option. */
1663 { "-scriptload", NULL
, 0, 1 },
1664 { "-f", "--funcall", 0, 1 },
1665 { "-funcall", 0, 0, 1 },
1666 { "-eval", "--eval", 0, 1 },
1667 { "-execute", "--execute", 0, 1 },
1668 { "-find-file", "--find-file", 0, 1 },
1669 { "-visit", "--visit", 0, 1 },
1670 { "-file", "--file", 0, 1 },
1671 { "-insert", "--insert", 0, 1 },
1673 { "-NXOpen", 0, 0, 1 },
1674 { "-NXOpenTemp", 0, 0, 1 },
1675 { "-NSOpen", 0, 0, 1 },
1676 { "-NSOpenTemp", 0, 0, 1 },
1677 { "-GSFilePath", 0, 0, 1 },
1679 /* This should be processed after ordinary file name args and the like. */
1680 { "-kill", "--kill", -10, 0 },
1683 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1684 so that the highest priority ones come first.
1685 Do not change the order of elements of equal priority.
1686 If an option takes an argument, keep it and its argument together.
1688 If an option that takes no argument appears more
1689 than once, eliminate all but one copy of it. */
1692 sort_args (int argc
, char **argv
)
1694 char **new = xmalloc (argc
* sizeof *new);
1695 /* For each element of argv,
1696 the corresponding element of options is:
1697 0 for an option that takes no arguments,
1698 1 for an option that takes one argument, etc.
1699 -1 for an ordinary non-option argument. */
1700 int *options
= xnmalloc (argc
, sizeof *options
);
1701 int *priority
= xnmalloc (argc
, sizeof *priority
);
1703 int incoming_used
= 1;
1707 /* Categorize all the options,
1708 and figure out which argv elts are option arguments. */
1709 for (from
= 1; from
< argc
; from
++)
1713 if (argv
[from
][0] == '-')
1717 /* If we have found "--", don't consider
1718 any more arguments as options. */
1719 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1721 /* Leave the "--", and everything following it, at the end. */
1722 for (; from
< argc
; from
++)
1724 priority
[from
] = -100;
1730 /* Look for a match with a known old-fashioned option. */
1731 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1732 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1734 options
[from
] = standard_args
[i
].nargs
;
1735 priority
[from
] = standard_args
[i
].priority
;
1736 if (from
+ standard_args
[i
].nargs
>= argc
)
1737 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1738 from
+= standard_args
[i
].nargs
;
1742 /* Look for a match with a known long option.
1743 MATCH is -1 if no match so far, -2 if two or more matches so far,
1744 >= 0 (the table index of the match) if just one match so far. */
1745 if (argv
[from
][1] == '-')
1747 char const *equals
= strchr (argv
[from
], '=');
1749 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1754 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1755 if (standard_args
[i
].longname
1756 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1765 /* If we found exactly one match, use that. */
1768 options
[from
] = standard_args
[match
].nargs
;
1769 priority
[from
] = standard_args
[match
].priority
;
1770 /* If --OPTION=VALUE syntax is used,
1771 this option uses just one argv element. */
1774 if (from
+ options
[from
] >= argc
)
1775 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1776 from
+= options
[from
];
1778 /* FIXME When match < 0, shouldn't there be some error,
1779 or at least indication to the user that there was a
1786 /* Copy the arguments, in order of decreasing priority, to NEW. */
1788 while (incoming_used
< argc
)
1791 int best_priority
= -9999;
1793 /* Find the highest priority remaining option.
1794 If several have equal priority, take the first of them. */
1795 for (from
= 1; from
< argc
; from
++)
1797 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1799 best_priority
= priority
[from
];
1802 /* Skip option arguments--they are tied to the options. */
1803 if (options
[from
] > 0)
1804 from
+= options
[from
];
1810 /* Copy the highest priority remaining option, with its args, to NEW.
1811 Unless it is a duplicate of the previous one. */
1812 if (! (options
[best
] == 0
1813 && ! strcmp (new[to
- 1], argv
[best
])))
1815 new[to
++] = argv
[best
];
1816 for (i
= 0; i
< options
[best
]; i
++)
1817 new[to
++] = argv
[best
+ i
+ 1];
1820 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1822 /* Clear out this option in ARGV. */
1824 for (i
= 0; i
< options
[best
]; i
++)
1825 argv
[best
+ i
+ 1] = 0;
1828 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1832 memcpy (argv
, new, sizeof (char *) * argc
);
1839 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1840 doc
: /* Exit the Emacs job and kill it.
1841 If ARG is an integer, return ARG as the exit program code.
1842 If ARG is a string, stuff it as keyboard input.
1844 This function is called upon receipt of the signals SIGTERM
1845 or SIGHUP, and upon SIGINT in batch mode.
1847 The value of `kill-emacs-hook', if not void,
1848 is a list of functions (of no args),
1849 all of which are called before Emacs is actually killed. */)
1852 struct gcpro gcpro1
;
1861 hook
= intern ("kill-emacs-hook");
1862 Frun_hooks (1, &hook
);
1866 #ifdef HAVE_X_WINDOWS
1867 /* Transfer any clipboards we own to the clipboard manager. */
1868 x_clipboard_manager_save_all ();
1871 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1874 ns_release_autorelease_pool (ns_pool
);
1877 /* If we have an auto-save list file,
1878 kill it because we are exiting Emacs deliberately (not crashing).
1879 Do it after shut_down_emacs, which does an auto-save. */
1880 if (STRINGP (Vauto_save_list_file_name
))
1881 unlink (SSDATA (Vauto_save_list_file_name
));
1884 exit_code
= (XINT (arg
) < 0
1885 ? XINT (arg
) | INT_MIN
1886 : XINT (arg
) & INT_MAX
);
1888 exit_code
= EXIT_SUCCESS
;
1893 /* Perform an orderly shutdown of Emacs. Autosave any modified
1894 buffers, kill any child processes, clean up the terminal modes (if
1895 we're in the foreground), and other stuff like that. Don't perform
1896 any redisplay; this may be called when Emacs is shutting down in
1897 the background, or after its X connection has died.
1899 If SIG is a signal number, print a message for it.
1901 This is called by fatal signal handlers, X protocol error handlers,
1905 shut_down_emacs (int sig
, Lisp_Object stuff
)
1907 /* Prevent running of hooks from now on. */
1910 /* Don't update display from now on. */
1911 Vinhibit_redisplay
= Qt
;
1913 /* If we are controlling the terminal, reset terminal modes. */
1916 pid_t pgrp
= getpgrp ();
1917 pid_t tpgrp
= tcgetpgrp (0);
1918 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1920 reset_all_sys_modes ();
1921 if (sig
&& sig
!= SIGTERM
)
1923 static char const format
[] = "Fatal error %d: ";
1924 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1925 int buflen
= sprintf (buf
, format
, sig
);
1926 char const *sig_desc
= safe_strsignal (sig
);
1927 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1928 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1934 reset_all_sys_modes ();
1937 stuff_buffered_input (stuff
);
1939 inhibit_sentinels
= 1;
1940 kill_buffer_processes (Qnil
);
1941 Fdo_auto_save (Qt
, Qnil
);
1943 #ifdef CLASH_DETECTION
1944 unlock_all_files ();
1947 /* There is a tendency for a SIGIO signal to arrive within exit,
1948 and cause a SIGHUP because the input descriptor is already closed. */
1952 /* Do this only if terminating normally, we want glyph matrices
1953 etc. in a core dump. */
1954 if (sig
== 0 || sig
== SIGTERM
)
1956 check_glyph_memory ();
1957 check_message_stack ();
1965 ns_term_shutdown (sig
);
1969 xml_cleanup_parser ();
1983 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1984 doc
: /* Dump current state of Emacs into executable file FILENAME.
1985 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1986 This is used in the file `loadup.el' when building Emacs.
1988 You must run Emacs in batch mode in order to dump it. */)
1989 (Lisp_Object filename
, Lisp_Object symfile
)
1993 ptrdiff_t count
= SPECPDL_INDEX ();
1997 if (! noninteractive
)
1998 error ("Dumping Emacs works only in batch mode");
2002 /* Warn if the gap between BSS end and heap start is larger than this. */
2003 # define MAX_HEAP_BSS_DIFF (1024*1024)
2005 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2007 fprintf (stderr
, "**************************************************\n");
2008 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2009 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2011 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2012 fprintf (stderr
, "fail because of this. See the section about\n");
2013 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2014 fprintf (stderr
, "**************************************************\n");
2016 #endif /* GNU_LINUX */
2018 /* Bind `command-line-processed' to nil before dumping,
2019 so that the dumped Emacs will process its command line
2020 and set up to work with X windows if appropriate. */
2021 symbol
= intern ("command-line-processed");
2022 specbind (symbol
, Qnil
);
2024 CHECK_STRING (filename
);
2025 filename
= Fexpand_file_name (filename
, Qnil
);
2026 if (!NILP (symfile
))
2028 CHECK_STRING (symfile
);
2029 if (SCHARS (symfile
))
2030 symfile
= Fexpand_file_name (symfile
, Qnil
);
2034 Vpurify_flag
= Qnil
;
2037 set_time_zone_rule (dump_tz
);
2038 #ifndef LOCALTIME_CACHE
2039 /* Force a tz reload, since set_time_zone_rule doesn't. */
2045 /* Tell malloc where start of impure now is. */
2046 /* Also arrange for warnings when nearly out of space. */
2047 #ifndef SYSTEM_MALLOC
2049 /* On Windows, this was done before dumping, and that once suffices.
2050 Meanwhile, my_edata is not valid on Windows. */
2052 extern char my_edata
[];
2053 memory_warnings (my_edata
, malloc_warning
);
2055 #endif /* not WINDOWSNT */
2056 #endif /* not SYSTEM_MALLOC */
2057 #ifdef DOUG_LEA_MALLOC
2058 malloc_state_ptr
= malloc_get_state ();
2061 #ifdef USE_MMAP_FOR_BUFFERS
2064 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2065 #ifdef USE_MMAP_FOR_BUFFERS
2068 #ifdef DOUG_LEA_MALLOC
2069 free (malloc_state_ptr
);
2073 Vlibrary_cache
= Qnil
;
2075 #ifdef HAVE_WINDOW_SYSTEM
2076 reset_image_types ();
2081 return unbind_to (count
, Qnil
);
2084 #endif /* not CANNOT_DUMP */
2087 /* Recover from setlocale (LC_ALL, ""). */
2091 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2092 so that numbers are read and printed properly for Emacs Lisp. */
2093 setlocale (LC_NUMERIC
, "C");
2096 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2099 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2101 if (! EQ (*plocale
, desired_locale
))
2103 *plocale
= desired_locale
;
2104 setlocale (category
, (STRINGP (desired_locale
)
2105 ? SSDATA (desired_locale
)
2110 /* Set system time locale to match Vsystem_time_locale, if possible. */
2112 synchronize_system_time_locale (void)
2114 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2115 Vsystem_time_locale
);
2118 /* Set system messages locale to match Vsystem_messages_locale, if
2121 synchronize_system_messages_locale (void)
2124 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2125 Vsystem_messages_locale
);
2128 #endif /* HAVE_SETLOCALE */
2132 decode_env_path (const char *evarname
, const char *defalt
)
2134 const char *path
, *p
;
2135 Lisp_Object lpath
, element
, tem
;
2138 const char *emacs_dir
= egetenv ("emacs_dir");
2139 static const char *emacs_dir_env
= "%emacs_dir%/";
2140 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2143 /* It's okay to use getenv here, because this function is only used
2144 to initialize variables when Emacs starts up, and isn't called
2147 path
= getenv (evarname
);
2158 /* Ensure values from the environment use the proper directory separator. */
2161 char *path_copy
= alloca (strlen (path
) + 1);
2162 strcpy (path_copy
, path
);
2163 dostounix_filename (path_copy
);
2170 p
= strchr (path
, SEPCHAR
);
2172 p
= path
+ strlen (path
);
2173 element
= (p
- path
? make_string (path
, p
- path
)
2174 : build_string ("."));
2176 /* Relative file names in the default path are interpreted as
2177 being relative to $emacs_dir. */
2178 if (emacs_dir
&& defaulted
2179 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2180 element
= Fexpand_file_name (Fsubstring (element
,
2181 make_number (emacs_dir_len
),
2183 build_string (emacs_dir
));
2186 /* Add /: to the front of the name
2187 if it would otherwise be treated as magic. */
2188 tem
= Ffind_file_name_handler (element
, Qt
);
2190 /* However, if the handler says "I'm safe",
2191 don't bother adding /:. */
2195 prop
= Fget (tem
, intern ("safe-magic"));
2201 element
= concat2 (build_string ("/:"), element
);
2203 lpath
= Fcons (element
, lpath
);
2209 return Fnreverse (lpath
);
2212 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2213 doc
: /* Return non-nil if the current emacs process is a daemon.
2214 If the daemon was given a name argument, return that name. */)
2219 return build_string (daemon_name
);
2226 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2227 doc
: /* Mark the Emacs daemon as being initialized.
2228 This finishes the daemonization process by doing the other half of detaching
2229 from the parent process and its tty file descriptors. */)
2236 error ("This function can only be called if emacs is run as a daemon");
2238 if (daemon_pipe
[1] < 0)
2239 error ("The daemon has already been initialized");
2241 if (NILP (Vafter_init_time
))
2242 error ("This function can only be called after loading the init files");
2244 /* Get rid of stdin, stdout and stderr. */
2245 nfd
= open ("/dev/null", O_RDWR
);
2247 err
|= dup2 (nfd
, 0) < 0;
2248 err
|= dup2 (nfd
, 1) < 0;
2249 err
|= dup2 (nfd
, 2) < 0;
2250 err
|= close (nfd
) != 0;
2252 /* Closing the pipe will notify the parent that it can exit.
2253 FIXME: In case some other process inherited the pipe, closing it here
2254 won't notify the parent because it's still open elsewhere, so we
2255 additionally send a byte, just to make sure the parent really exits.
2256 Instead, we should probably close the pipe in start-process and
2257 call-process to make sure the pipe is never inherited by
2259 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2260 err
|= close (daemon_pipe
[1]) != 0;
2261 /* Set it to an invalid value so we know we've already run this function. */
2262 daemon_pipe
[1] = -1;
2265 error ("I/O error during daemon initialization");
2270 syms_of_emacs (void)
2272 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2273 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2274 DEFSYM (Qkill_emacs
, "kill-emacs");
2277 defsubr (&Sdump_emacs
);
2280 defsubr (&Skill_emacs
);
2282 defsubr (&Sinvocation_name
);
2283 defsubr (&Sinvocation_directory
);
2284 defsubr (&Sdaemonp
);
2285 defsubr (&Sdaemon_initialized
);
2287 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2288 doc
: /* Args passed by shell to Emacs, as a list of strings.
2289 Many arguments are deleted from the list as they are processed. */);
2291 DEFVAR_LISP ("system-type", Vsystem_type
,
2292 doc
: /* The value is a symbol indicating the type of operating system you are using.
2294 `gnu' compiled for a GNU Hurd system.
2295 `gnu/linux' compiled for a GNU/Linux system.
2296 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2297 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2298 `ms-dos' compiled as an MS-DOS application.
2299 `windows-nt' compiled as a native W32 application.
2300 `cygwin' compiled using the Cygwin library.
2301 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2302 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2303 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2304 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2306 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2307 doc
: /* Value is string indicating configuration Emacs was built for.
2308 On MS-Windows, the value reflects the OS flavor and version on which
2309 Emacs is running. */);
2310 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2312 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2313 doc
: /* String containing the configuration options Emacs was built with. */);
2314 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2316 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2317 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2319 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2320 doc
: /* Hook run when `kill-emacs' is called.
2321 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2322 in other similar situations), functions placed on this hook should not
2323 expect to be able to interact with the user. To ask for confirmation,
2324 see `kill-emacs-query-functions' instead.
2326 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2327 `noninteractive' was non-nil. */);
2328 Vkill_emacs_hook
= Qnil
;
2330 DEFVAR_LISP ("path-separator", Vpath_separator
,
2331 doc
: /* String containing the character that separates directories in
2332 search paths, such as PATH and other similar environment variables. */);
2335 Vpath_separator
= make_string (&c
, 1);
2338 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2339 doc
: /* The program name that was used to run Emacs.
2340 Any directory names are omitted. */);
2342 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2343 doc
: /* The directory in which the Emacs executable was found, to run it.
2344 The value is nil if that directory's name is not known. */);
2346 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2347 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2348 In an installed Emacs, this is normally nil. It is non-nil if
2349 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2350 within the variable `invocation-directory' or its parent. For example,
2351 this is the case when running an uninstalled Emacs executable from its
2352 build directory. */);
2353 Vinstallation_directory
= Qnil
;
2355 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2356 doc
: /* System locale for messages. */);
2357 Vsystem_messages_locale
= Qnil
;
2359 DEFVAR_LISP ("previous-system-messages-locale",
2360 Vprevious_system_messages_locale
,
2361 doc
: /* Most recently used system locale for messages. */);
2362 Vprevious_system_messages_locale
= Qnil
;
2364 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2365 doc
: /* System locale for time. */);
2366 Vsystem_time_locale
= Qnil
;
2368 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2369 doc
: /* Most recently used system locale for time. */);
2370 Vprevious_system_time_locale
= Qnil
;
2372 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2373 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2374 Vbefore_init_time
= Qnil
;
2376 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2377 doc
: /* Value of `current-time' after loading the init files.
2378 This is nil during initialization. */);
2379 Vafter_init_time
= Qnil
;
2381 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2382 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2383 inhibit_x_resources
= 0;
2385 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2386 doc
: /* Short copyright string for this version of Emacs. */);
2387 Vemacs_copyright
= build_string (emacs_copyright
);
2389 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2390 doc
: /* Version numbers of this version of Emacs. */);
2391 Vemacs_version
= build_string (emacs_version
);
2393 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2394 doc
: /* Alist of dynamic libraries vs external files implementing them.
2395 Each element is a list (LIBRARY FILE...), where the car is a symbol
2396 representing a supported external library, and the rest are strings giving
2397 alternate filenames for that library.
2399 Emacs tries to load the library from the files in the order they appear on
2400 the list; if none is loaded, the running session of Emacs won't have access
2403 Note that image types `pbm' and `xbm' do not need entries in this variable
2404 because they do not depend on external libraries and are always available.
2406 Also note that this is not a generic facility for accessing external
2407 libraries; only those already known by Emacs will be loaded. */);
2408 Vdynamic_library_alist
= Qnil
;
2409 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2412 Vlibrary_cache
= Qnil
;
2413 staticpro (&Vlibrary_cache
);
2416 /* Make sure IS_DAEMON starts up as false. */