1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2012
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
30 #include <ignore-value.h>
39 #if defined (WINDOWSNT)
43 #if defined (WINDOWSNT) || defined (HAVE_NTGUI)
44 #include "w32select.h"
48 #if defined (HAVE_NTGUI) && defined (CYGWIN)
52 #ifdef HAVE_WINDOW_SYSTEM
54 #endif /* HAVE_WINDOW_SYSTEM */
56 #ifdef NS_IMPL_GNUSTEP
57 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
58 #include <GNUstepBase/GSConfig.h>
62 #include "intervals.h"
63 #include "character.h"
69 #include "blockinput.h"
70 #include "syssignal.h"
73 #include "termhooks.h"
81 #if (defined PROFILING \
82 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
83 # include <sys/gmon.h>
84 extern void moncontrol (int mode
);
93 #include <sys/resource.h>
96 #ifdef HAVE_PERSONALITY_LINUX32
97 #include <sys/personality.h>
104 static const char emacs_version
[] = VERSION
;
105 static const char emacs_copyright
[] = COPYRIGHT
;
107 /* Empty lisp strings. To avoid having to build any others. */
108 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
111 /* Cache for externally loaded libraries. */
112 Lisp_Object Vlibrary_cache
;
115 /* Set after Emacs has started up the first time.
116 Prevents reinitialization of the Lisp world and keymaps
117 on subsequent starts. */
121 extern void unexec_init_emacs_zone (void);
124 #ifdef DOUG_LEA_MALLOC
125 /* Preserves a pointer to the memory allocated that copies that
126 static data inside glibc's malloc. */
127 static void *malloc_state_ptr
;
128 /* From glibc, a routine that returns a copy of the malloc internal state. */
129 extern void *malloc_get_state (void);
130 /* From glibc, a routine that overwrites the malloc internal state. */
131 extern int malloc_set_state (void*);
132 /* True if the MALLOC_CHECK_ environment variable was set while
133 dumping. Used to work around a bug in glibc's malloc. */
134 static bool malloc_using_checking
;
137 Lisp_Object Qfile_name_handler_alist
;
139 Lisp_Object Qrisky_local_variable
;
141 Lisp_Object Qkill_emacs
;
143 /* If true, Emacs should not attempt to use a window-specific code,
144 but instead should use the virtual terminal under which it was started. */
145 bool inhibit_window_system
;
147 /* If true, a filter or a sentinel is running. Tested to save the match
148 data on the first attempt to change it inside asynchronous code. */
149 bool running_asynch_code
;
151 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
152 /* If true, -d was specified, meaning we're using some window system. */
156 /* An address near the bottom of the stack.
157 Tells GC how to save a copy of the stack. */
160 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
161 /* The address where the heap starts (from the first sbrk (0) call). */
162 static void *my_heap_start
;
166 /* The gap between BSS end and heap start as far as we can tell. */
167 static uprintmax_t heap_bss_diff
;
170 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
173 On Cocoa, CoreFoundation lib fails in forked process:
174 http://developer.apple.com/ReleaseNotes/
175 CoreFoundation/CoreFoundation.html)
177 On Windows, a Cygwin fork child cannot access the USER subsystem.
179 We mark being in the exec'd process by a daemon name argument of
180 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
181 NAME is the original daemon name, if any. */
182 #if defined (NS_IMPL_COCOA) || (defined (HAVE_NTGUI) && defined (CYGWIN))
183 # define DAEMON_MUST_EXEC
186 /* True means running Emacs without interactive terminal. */
189 /* True means remove site-lisp directories from load-path. */
192 /* Name for the server started by the daemon.*/
193 static char *daemon_name
;
195 /* Pipe used to send exit notification to the daemon parent at
199 /* Save argv and argc. */
203 static void sort_args (int argc
, char **argv
);
204 static void syms_of_emacs (void);
206 /* MSVC needs each string be shorter than 2048 bytes, so the usage
207 strings below are split to not overflow this limit. */
209 Usage: %s [OPTION-OR-FILENAME]...\n\
211 Run Emacs, the extensible, customizable, self-documenting real-time\n\
212 display editor. The recommended way to start Emacs for normal editing\n\
213 is with no options at all.\n\
215 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
216 read the main documentation for these command-line arguments.\n\
218 Initialization options:\n\
220 --batch do not do interactive display; implies -q\n\
221 --chdir DIR change to directory DIR\n\
222 --daemon start a server in the background\n\
223 --debug-init enable Emacs Lisp debugger for init file\n\
224 --display, -d DISPLAY use X server DISPLAY\n\
225 --no-desktop do not load a saved desktop\n\
226 --no-init-file, -q load neither ~/.emacs nor default.el\n\
227 --no-shared-memory, -nl do not use shared memory\n\
228 --no-site-file do not load site-start.el\n\
229 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
230 --no-splash do not display a splash screen on startup\n\
231 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
232 --quick, -Q equivalent to:\n\
233 -q --no-site-file --no-site-lisp --no-splash\n\
234 --script FILE run FILE as an Emacs Lisp script\n\
235 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
236 --user, -u USER load ~USER/.emacs instead of your own\n\
242 FILE visit FILE using find-file\n\
243 +LINE go to line LINE in next FILE\n\
244 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
245 --directory, -L DIR add DIR to variable load-path\n\
246 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
247 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
248 --file FILE visit FILE using find-file\n\
249 --find-file FILE visit FILE using find-file\n\
250 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
251 --insert FILE insert contents of FILE into current buffer\n\
252 --kill exit without asking for confirmation\n\
253 --load, -l FILE load Emacs Lisp FILE using the load function\n\
254 --visit FILE visit FILE using find-file\n\
260 --background-color, -bg COLOR window background color\n\
261 --basic-display, -D disable many display features;\n\
262 used for debugging Emacs\n\
263 --border-color, -bd COLOR main border color\n\
264 --border-width, -bw WIDTH width of main border\n\
265 --color, --color=MODE override color mode for character terminals;\n\
266 MODE defaults to `auto', and\n\
267 can also be `never', `always',\n\
268 or a mode name like `ansi8'\n\
269 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
270 --font, -fn FONT default font; must be fixed-width\n\
271 --foreground-color, -fg COLOR window foreground color\n\
272 --fullheight, -fh make the first frame high as the screen\n\
273 --fullscreen, -fs make the first frame fullscreen\n\
274 --fullwidth, -fw make the first frame wide as the screen\n\
275 --maximized, -mm make the first frame maximized\n\
276 --geometry, -g GEOMETRY window geometry\n\
277 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
278 --iconic start Emacs in iconified state\n\
279 --internal-border, -ib WIDTH width between text and main border\n\
280 --line-spacing, -lsp PIXELS additional space to put between lines\n\
281 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
282 --name NAME title for initial Emacs frame\n\
283 --no-blinking-cursor, -nbc disable blinking cursor\n\
284 --reverse-video, -r, -rv switch foreground and background\n\
285 --title, -T TITLE title for initial Emacs frame\n\
286 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
287 --xrm XRESOURCES set additional X resources\n\
288 --parent-id XID set parent window\n\
289 --help display this help and exit\n\
290 --version output version information and exit\n\
294 You can generally also specify long option names with a single -; for\n\
295 example, -batch as well as --batch. You can use any unambiguous\n\
296 abbreviation for a --option.\n\
298 Various environment variables and window system resources also affect\n\
299 Emacs' operation. See the main documentation.\n\
301 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
302 section of the Emacs manual or the file BUGS.\n"
305 /* True if handling a fatal error already. */
306 bool fatal_error_in_progress
;
309 /* NS autrelease pool, for memory management. */
310 static void *ns_pool
;
315 /* Report a fatal error due to signal SIG, output a backtrace of at
316 most BACKTRACE_LIMIT lines, and exit. */
318 terminate_due_to_signal (int sig
, int backtrace_limit
)
320 signal (sig
, SIG_DFL
);
321 totally_unblock_input ();
323 /* If fatal error occurs in code below, avoid infinite recursion. */
324 if (! fatal_error_in_progress
)
326 fatal_error_in_progress
= 1;
328 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
329 Fkill_emacs (make_number (sig
));
331 shut_down_emacs (sig
, Qnil
);
332 emacs_backtrace (backtrace_limit
);
335 /* Signal the same code; this time it will really be fatal.
336 Since we're in a signal handler, the signal is blocked, so we
337 have to unblock it if we want to really receive it. */
341 sigemptyset (&unblocked
);
342 sigaddset (&unblocked
, sig
);
343 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
349 /* This shouldn't be executed, but it prevents a warning. */
355 /* Handler for SIGDANGER. */
357 handle_danger_signal (int sig
)
359 malloc_warning ("Operating system warns that virtual memory is running low.\n");
361 /* It might be unsafe to call do_auto_save now. */
362 force_auto_save_soon ();
366 deliver_danger_signal (int sig
)
368 deliver_process_signal (sig
, handle_danger_signal
);
372 /* Code for dealing with Lisp access to the Unix command line. */
375 init_cmdargs (int argc
, char **argv
, int skip_args
)
378 Lisp_Object name
, dir
, handler
;
379 ptrdiff_t count
= SPECPDL_INDEX ();
380 Lisp_Object raw_name
;
385 raw_name
= build_string (argv
[0]);
387 /* Add /: to the front of the name
388 if it would otherwise be treated as magic. */
389 handler
= Ffind_file_name_handler (raw_name
, Qt
);
390 if (! NILP (handler
))
391 raw_name
= concat2 (build_string ("/:"), raw_name
);
393 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
394 Vinvocation_directory
= Ffile_name_directory (raw_name
);
396 /* If we got no directory in argv[0], search PATH to find where
397 Emacs actually came from. */
398 if (NILP (Vinvocation_directory
))
401 int yes
= openp (Vexec_path
, Vinvocation_name
,
402 Vexec_suffixes
, &found
, make_number (X_OK
));
405 /* Add /: to the front of the name
406 if it would otherwise be treated as magic. */
407 handler
= Ffind_file_name_handler (found
, Qt
);
408 if (! NILP (handler
))
409 found
= concat2 (build_string ("/:"), found
);
410 Vinvocation_directory
= Ffile_name_directory (found
);
414 if (!NILP (Vinvocation_directory
)
415 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
416 /* Emacs was started with relative path, like ./emacs.
418 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
420 Vinstallation_directory
= Qnil
;
422 if (!NILP (Vinvocation_directory
))
424 dir
= Vinvocation_directory
;
426 /* If we are running from the build directory, set DIR to the
427 src subdirectory of the Emacs tree, like on Posix
429 if (SBYTES (dir
) > sizeof ("/i386/") - 1
430 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
432 dir
= Fexpand_file_name (build_string ("../.."), dir
);
433 #else /* !WINDOWSNT */
435 name
= Fexpand_file_name (Vinvocation_name
, dir
);
438 Lisp_Object tem
, lib_src_exists
;
439 Lisp_Object etc_exists
, info_exists
;
441 /* See if dir contains subdirs for use by Emacs.
442 Check for the ones that would exist in a build directory,
443 not including lisp and info. */
444 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
445 lib_src_exists
= Ffile_exists_p (tem
);
448 /* MSDOS installations frequently remove lib-src, but we still
449 must set installation-directory, or else info won't find
450 its files (it uses the value of installation-directory). */
451 tem
= Fexpand_file_name (build_string ("info"), dir
);
452 info_exists
= Ffile_exists_p (tem
);
457 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
459 tem
= Fexpand_file_name (build_string ("etc"), dir
);
460 etc_exists
= Ffile_exists_p (tem
);
461 if (!NILP (etc_exists
))
463 Vinstallation_directory
464 = Ffile_name_as_directory (dir
);
469 /* See if dir's parent contains those subdirs. */
470 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
471 lib_src_exists
= Ffile_exists_p (tem
);
475 /* See the MSDOS commentary above. */
476 tem
= Fexpand_file_name (build_string ("../info"), dir
);
477 info_exists
= Ffile_exists_p (tem
);
482 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
484 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
485 etc_exists
= Ffile_exists_p (tem
);
486 if (!NILP (etc_exists
))
488 tem
= Fexpand_file_name (build_string (".."), dir
);
489 Vinstallation_directory
490 = Ffile_name_as_directory (tem
);
495 /* If the Emacs executable is actually a link,
496 next try the dir that the link points into. */
497 tem
= Ffile_symlink_p (name
);
500 name
= Fexpand_file_name (tem
, dir
);
501 dir
= Ffile_name_directory (name
);
508 Vcommand_line_args
= Qnil
;
510 for (i
= argc
- 1; i
>= 0; i
--)
512 if (i
== 0 || i
> skip_args
)
513 /* For the moment, we keep arguments as is in unibyte strings.
514 They are decoded in the function command-line after we know
515 locale-coding-system. */
517 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
521 unbind_to (count
, Qnil
);
524 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
525 doc
: /* Return the program name that was used to run Emacs.
526 Any directory names are omitted. */)
529 return Fcopy_sequence (Vinvocation_name
);
532 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
534 doc
: /* Return the directory name in which the Emacs executable was located. */)
537 return Fcopy_sequence (Vinvocation_directory
);
542 /* A valid but unlikely value for the TZ environment value.
543 It is OK (though a bit slower) if the user actually chooses this value. */
544 static char dump_tz
[] = "UtC0";
547 #ifndef ORDINARY_LINK
548 /* We don't include crtbegin.o and crtend.o in the link,
549 so these functions and variables might be missed.
550 Provide dummy definitions to avoid error.
551 (We don't have any real constructors or destructors.) */
554 /* Define a dummy function F. Declare F too, to pacify gcc
555 -Wmissing-prototypes. */
556 #define DEFINE_DUMMY_FUNCTION(f) \
557 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
559 #ifndef GCC_CTORS_IN_LIBC
560 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
561 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
562 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
563 /* GNU/Linux has a bug in its library; avoid an error. */
565 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
567 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
568 #endif /* GCC_CTORS_IN_LIBC */
569 DEFINE_DUMMY_FUNCTION (__main
)
570 #endif /* __GNUC__ */
571 #endif /* ORDINARY_LINK */
573 /* Test whether the next argument in ARGV matches SSTR or a prefix of
574 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
575 (the argument is supposed to have a value) store in *VALPTR either
576 the next argument or the portion of this one after the equal sign.
577 ARGV is read starting at position *SKIPPTR; this index is advanced
578 by the number of arguments used.
580 Too bad we can't just use getopt for all of this, but we don't have
581 enough information to do it right. */
584 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
585 int minlen
, char **valptr
, int *skipptr
)
591 /* Don't access argv[argc]; give up in advance. */
592 if (argc
<= *skipptr
+ 1)
595 arg
= argv
[*skipptr
+1];
598 if (strcmp (arg
, sstr
) == 0)
602 *valptr
= argv
[*skipptr
+2];
609 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
610 ? p
- arg
: strlen (arg
));
611 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
613 else if (valptr
== NULL
)
624 else if (argv
[*skipptr
+2] != NULL
)
626 *valptr
= argv
[*skipptr
+2];
636 #ifdef DOUG_LEA_MALLOC
638 /* malloc can be invoked even before main (e.g. by the dynamic
639 linker), so the dumped malloc state must be restored as early as
640 possible using this special hook. */
643 malloc_initialize_hook (void)
647 if (!malloc_using_checking
)
648 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
649 ignored if the heap to be restored was constructed without
650 malloc checking. Can't use unsetenv, since that calls malloc. */
654 for (p
= environ
; p
&& *p
; p
++)
655 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
664 malloc_set_state (malloc_state_ptr
);
665 #ifndef XMALLOC_OVERRUN_CHECK
666 free (malloc_state_ptr
);
671 if (my_heap_start
== 0)
672 my_heap_start
= sbrk (0);
673 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
677 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
679 #endif /* DOUG_LEA_MALLOC */
684 main (int argc
, char **argv
)
689 char stack_bottom_variable
;
690 bool do_initial_setlocale
;
693 #ifdef HAVE_SETRLIMIT
699 #ifdef DAEMON_MUST_EXEC
701 #endif /* DAEMON_MUST_EXEC */
708 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
709 /* This is used by the Cygwin build. */
710 setenv ("G_SLICE", "always-malloc", 1);
716 extern char my_endbss
[];
717 extern char *my_endbss_static
;
719 if (my_heap_start
== 0)
720 my_heap_start
= sbrk (0);
722 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
726 #ifdef RUN_TIME_REMAP
728 run_time_remap (argv
[0]);
731 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
734 unexec_init_emacs_zone ();
737 sort_args (argc
, argv
);
739 while (argv
[argc
]) argc
++;
741 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
743 const char *version
, *copyright
;
746 Lisp_Object tem
, tem2
;
747 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
748 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
751 fprintf (stderr
, "Invalid value of `emacs-version'\n");
756 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
761 version
= SSDATA (tem
);
762 copyright
= SSDATA (tem2
);
767 version
= emacs_version
;
768 copyright
= emacs_copyright
;
770 printf ("GNU Emacs %s\n", version
);
771 printf ("%s\n", copyright
);
772 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
773 printf ("You may redistribute copies of Emacs\n");
774 printf ("under the terms of the GNU General Public License.\n");
775 printf ("For more information about these matters, ");
776 printf ("see the file named COPYING.\n");
780 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
781 if (chdir (ch_to_dir
) == -1)
783 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
784 argv
[0], ch_to_dir
, strerror (errno
));
788 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
789 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
791 #ifdef HAVE_PERSONALITY_LINUX32
792 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
794 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
795 /* Set this so we only do this once. */
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
);
1092 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1097 if (! noninteractive
)
1099 #if defined (USG5) && defined (INTERRUPT_INPUT)
1102 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1104 extern void malloc_enable_thread (void);
1106 malloc_enable_thread ();
1111 init_signals (dumping
);
1113 noninteractive1
= noninteractive
;
1115 /* Perform basic initializations (not merely interning symbols). */
1122 init_charset_once ();
1123 init_coding_once ();
1124 init_syntax_once (); /* Create standard syntax table. */
1125 init_category_once (); /* Create standard category table. */
1126 /* Must be done before init_buffer. */
1127 init_casetab_once ();
1128 init_buffer_once (); /* Create buffer table and some buffers. */
1129 init_minibuf_once (); /* Create list of minibuffers. */
1130 /* Must precede init_window_once. */
1132 /* Call syms_of_xfaces before init_window_once because that
1133 function creates Vterminal_frame. Termcap frames now use
1134 faces, and the face implementation uses some symbols as
1137 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1138 be better to arrange things not to have this dependency. */
1140 /* Call syms_of_keyboard before init_window_once because
1141 keyboard sets up symbols that include some face names that
1142 the X support will want to use. This can happen when
1143 CANNOT_DUMP is defined. */
1144 syms_of_keyboard ();
1146 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1149 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1151 /* Before syms_of_coding because it initializes Qcharsetp. */
1153 /* Before init_window_once, because it sets up the
1154 Vcoding_system_hash_table. */
1155 syms_of_coding (); /* This should be after syms_of_fileio. */
1157 init_window_once (); /* Init the window system. */
1158 #ifdef HAVE_WINDOW_SYSTEM
1159 init_fringe_once (); /* Swap bitmaps if necessary. */
1160 #endif /* HAVE_WINDOW_SYSTEM */
1165 if (do_initial_setlocale
)
1168 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1169 Vsystem_time_locale
= Vprevious_system_time_locale
;
1174 running_asynch_code
= 0;
1178 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1181 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1184 ns_pool
= ns_alloc_autorelease_pool ();
1185 if (!noninteractive
)
1187 #ifdef NS_IMPL_COCOA
1188 if (skip_args
< argc
)
1190 /* FIXME: Do the right thing if getenv returns NULL, or if
1192 if (!strncmp (argv
[skip_args
], "-psn", 4))
1195 chdir (getenv ("HOME"));
1197 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1200 chdir (getenv ("HOME"));
1205 #endif /* HAVE_NS */
1207 #ifdef HAVE_X_WINDOWS
1208 /* Stupid kludge to catch command-line display spec. We can't
1209 handle this argument entirely in window system dependent code
1210 because we don't even know which window system dependent code
1211 to run until we've recognized this argument. */
1213 char *displayname
= 0;
1214 int count_before
= skip_args
;
1216 /* Skip any number of -d options, but only use the last one. */
1219 int count_before_this
= skip_args
;
1221 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1223 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1228 count_before
= count_before_this
;
1231 /* If we have the form --display=NAME,
1232 convert it into -d name.
1233 This requires inserting a new element into argv. */
1234 if (displayname
&& count_before
< skip_args
)
1236 if (skip_args
== count_before
+ 1)
1238 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1239 (argc
- (count_before
+ 2)) * sizeof *argv
);
1240 argv
[count_before
+ 2] = displayname
;
1243 argv
[count_before
+ 1] = (char *) "-d";
1248 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1249 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1253 /* Don't actually discard this arg. */
1254 skip_args
= count_before
;
1256 #else /* !HAVE_X_WINDOWS */
1259 int count_before
= skip_args
;
1261 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1262 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1265 skip_args
= count_before
;
1269 /* argmatch must not be used after here,
1270 except when building temacs
1271 because the -d argument has not been skipped in skip_args. */
1274 /* Call early 'cause init_environment needs it. */
1276 /* Set defaults for several environment variables. */
1278 init_environment (argc
, argv
, skip_args
);
1285 /* Initialize environment from registry settings. */
1286 init_environment (argv
);
1287 init_ntproc (dumping
); /* must precede init_editfns. */
1290 /* Initialize and GC-protect Vinitial_environment and
1291 Vprocess_environment before set_initial_environment fills them
1294 syms_of_callproc ();
1295 /* egetenv is a pretty low-level facility, which may get called in
1296 many circumstances; it seems flimsy to put off initializing it
1297 until calling init_callproc. Do not do it when dumping. */
1299 set_initial_environment ();
1301 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1302 if this is not done. Do it after set_global_environment so that we
1303 don't pollute Vglobal_environment. */
1304 /* Setting LANG here will defeat the startup locale processing... */
1309 init_buffer (); /* Init default directory of main buffer. */
1311 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1312 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1316 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1317 Lisp_Object old_log_max
;
1318 old_log_max
= Vmessage_log_max
;
1319 XSETFASTINT (Vmessage_log_max
, 0);
1320 message_dolog ("", 0, 1, 0);
1321 Vmessage_log_max
= old_log_max
;
1324 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1327 /* Check to see if Emacs has been installed correctly. */
1328 check_windows_init_file ();
1331 /* Intern the names of all standard functions and variables;
1332 define standard keys. */
1336 /* The basic levels of Lisp must come first. Note that
1337 syms_of_data and some others have already been called. */
1343 syms_of_floatfns ();
1346 syms_of_bytecode ();
1348 syms_of_casefiddle ();
1350 syms_of_category ();
1352 syms_of_character ();
1359 syms_of_filelock ();
1362 /* syms_of_keymap (); */
1370 syms_of_terminal ();
1376 syms_of_textprop ();
1377 syms_of_composite ();
1380 #endif /* WINDOWSNT */
1381 #if defined (CYGWIN) && defined (HAVE_NTGUI)
1383 #endif /* defined(CYGWIN) && defined (HAVE_NTGUI) */
1387 #ifdef HAVE_WINDOW_SYSTEM
1390 #endif /* HAVE_WINDOW_SYSTEM */
1391 #ifdef HAVE_X_WINDOWS
1396 syms_of_xsettings ();
1403 #endif /* HAVE_X_WINDOWS */
1416 #endif /* HAVE_NTGUI */
1418 #ifdef HAVE_W32SELECT
1419 syms_of_w32select ();
1420 #endif /* HAVE_W32SELECT */
1426 syms_of_win16select ();
1433 syms_of_nsselect ();
1435 #endif /* HAVE_NS */
1442 syms_of_dbusbind ();
1443 #endif /* HAVE_DBUS */
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 #ifdef HAVE_W32SELECT
1469 globals_of_w32select ();
1470 #endif /* HAVE_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
);
1878 else if (noninteractive
&& (fflush (stdout
) || ferror (stdout
)))
1879 exit_code
= EXIT_FAILURE
;
1881 exit_code
= EXIT_SUCCESS
;
1886 /* Perform an orderly shutdown of Emacs. Autosave any modified
1887 buffers, kill any child processes, clean up the terminal modes (if
1888 we're in the foreground), and other stuff like that. Don't perform
1889 any redisplay; this may be called when Emacs is shutting down in
1890 the background, or after its X connection has died.
1892 If SIG is a signal number, print a message for it.
1894 This is called by fatal signal handlers, X protocol error handlers,
1898 shut_down_emacs (int sig
, Lisp_Object stuff
)
1900 /* Prevent running of hooks from now on. */
1903 /* Don't update display from now on. */
1904 Vinhibit_redisplay
= Qt
;
1906 /* If we are controlling the terminal, reset terminal modes. */
1909 int pgrp
= EMACS_GETPGRP (0);
1910 int tpgrp
= tcgetpgrp (0);
1911 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1913 reset_all_sys_modes ();
1914 if (sig
&& sig
!= SIGTERM
)
1916 static char const format
[] = "Fatal error %d: ";
1917 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1918 int buflen
= sprintf (buf
, format
, sig
);
1919 char const *sig_desc
= safe_strsignal (sig
);
1920 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1921 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1927 reset_all_sys_modes ();
1930 stuff_buffered_input (stuff
);
1932 inhibit_sentinels
= 1;
1933 kill_buffer_processes (Qnil
);
1934 Fdo_auto_save (Qt
, Qnil
);
1936 #ifdef CLASH_DETECTION
1937 unlock_all_files ();
1940 /* There is a tendency for a SIGIO signal to arrive within exit,
1941 and cause a SIGHUP because the input descriptor is already closed. */
1945 /* Do this only if terminating normally, we want glyph matrices
1946 etc. in a core dump. */
1947 if (sig
== 0 || sig
== SIGTERM
)
1949 check_glyph_memory ();
1950 check_message_stack ();
1958 ns_term_shutdown (sig
);
1962 xml_cleanup_parser ();
1976 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1977 doc
: /* Dump current state of Emacs into executable file FILENAME.
1978 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1979 This is used in the file `loadup.el' when building Emacs.
1981 You must run Emacs in batch mode in order to dump it. */)
1982 (Lisp_Object filename
, Lisp_Object symfile
)
1986 ptrdiff_t count
= SPECPDL_INDEX ();
1990 if (! noninteractive
)
1991 error ("Dumping Emacs works only in batch mode");
1995 /* Warn if the gap between BSS end and heap start is larger than this. */
1996 # define MAX_HEAP_BSS_DIFF (1024*1024)
1998 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2000 fprintf (stderr
, "**************************************************\n");
2001 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2002 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2004 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2005 fprintf (stderr
, "fail because of this. See the section about\n");
2006 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2007 fprintf (stderr
, "**************************************************\n");
2009 #endif /* GNU_LINUX */
2011 /* Bind `command-line-processed' to nil before dumping,
2012 so that the dumped Emacs will process its command line
2013 and set up to work with X windows if appropriate. */
2014 symbol
= intern ("command-line-processed");
2015 specbind (symbol
, Qnil
);
2017 CHECK_STRING (filename
);
2018 filename
= Fexpand_file_name (filename
, Qnil
);
2019 if (!NILP (symfile
))
2021 CHECK_STRING (symfile
);
2022 if (SCHARS (symfile
))
2023 symfile
= Fexpand_file_name (symfile
, Qnil
);
2027 Vpurify_flag
= Qnil
;
2030 set_time_zone_rule (dump_tz
);
2031 #ifndef LOCALTIME_CACHE
2032 /* Force a tz reload, since set_time_zone_rule doesn't. */
2038 /* Tell malloc where start of impure now is. */
2039 /* Also arrange for warnings when nearly out of space. */
2040 #ifndef SYSTEM_MALLOC
2042 /* On Windows, this was done before dumping, and that once suffices.
2043 Meanwhile, my_edata is not valid on Windows. */
2045 extern char my_edata
[];
2046 memory_warnings (my_edata
, malloc_warning
);
2048 #endif /* not WINDOWSNT */
2049 #endif /* not SYSTEM_MALLOC */
2050 #ifdef DOUG_LEA_MALLOC
2051 malloc_state_ptr
= malloc_get_state ();
2054 #ifdef USE_MMAP_FOR_BUFFERS
2057 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2058 #ifdef USE_MMAP_FOR_BUFFERS
2061 #ifdef DOUG_LEA_MALLOC
2062 free (malloc_state_ptr
);
2066 Vlibrary_cache
= Qnil
;
2068 #ifdef HAVE_WINDOW_SYSTEM
2069 reset_image_types ();
2074 return unbind_to (count
, Qnil
);
2077 #endif /* not CANNOT_DUMP */
2080 /* Recover from setlocale (LC_ALL, ""). */
2084 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2085 so that numbers are read and printed properly for Emacs Lisp. */
2086 setlocale (LC_NUMERIC
, "C");
2089 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2092 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2094 if (! EQ (*plocale
, desired_locale
))
2096 *plocale
= desired_locale
;
2097 setlocale (category
, (STRINGP (desired_locale
)
2098 ? SSDATA (desired_locale
)
2103 /* Set system time locale to match Vsystem_time_locale, if possible. */
2105 synchronize_system_time_locale (void)
2107 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2108 Vsystem_time_locale
);
2111 /* Set system messages locale to match Vsystem_messages_locale, if
2114 synchronize_system_messages_locale (void)
2117 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2118 Vsystem_messages_locale
);
2121 #endif /* HAVE_SETLOCALE */
2125 decode_env_path (const char *evarname
, const char *defalt
)
2127 const char *path
, *p
;
2128 Lisp_Object lpath
, element
, tem
;
2131 const char *emacs_dir
= egetenv ("emacs_dir");
2132 static const char *emacs_dir_env
= "%emacs_dir%/";
2133 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2136 /* It's okay to use getenv here, because this function is only used
2137 to initialize variables when Emacs starts up, and isn't called
2140 path
= getenv (evarname
);
2151 /* Ensure values from the environment use the proper directory separator. */
2154 char *path_copy
= alloca (strlen (path
) + 1);
2155 strcpy (path_copy
, path
);
2156 dostounix_filename (path_copy
);
2163 p
= strchr (path
, SEPCHAR
);
2165 p
= path
+ strlen (path
);
2166 element
= (p
- path
? make_string (path
, p
- path
)
2167 : build_string ("."));
2169 /* Relative file names in the default path are interpreted as
2170 being relative to $emacs_dir. */
2171 if (emacs_dir
&& defaulted
2172 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2173 element
= Fexpand_file_name (Fsubstring (element
,
2174 make_number (emacs_dir_len
),
2176 build_string (emacs_dir
));
2179 /* Add /: to the front of the name
2180 if it would otherwise be treated as magic. */
2181 tem
= Ffind_file_name_handler (element
, Qt
);
2183 /* However, if the handler says "I'm safe",
2184 don't bother adding /:. */
2188 prop
= Fget (tem
, intern ("safe-magic"));
2194 element
= concat2 (build_string ("/:"), element
);
2196 lpath
= Fcons (element
, lpath
);
2202 return Fnreverse (lpath
);
2205 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2206 doc
: /* Return non-nil if the current emacs process is a daemon.
2207 If the daemon was given a name argument, return that name. */)
2212 return build_string (daemon_name
);
2219 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2220 doc
: /* Mark the Emacs daemon as being initialized.
2221 This finishes the daemonization process by doing the other half of detaching
2222 from the parent process and its tty file descriptors. */)
2229 error ("This function can only be called if emacs is run as a daemon");
2231 if (daemon_pipe
[1] < 0)
2232 error ("The daemon has already been initialized");
2234 if (NILP (Vafter_init_time
))
2235 error ("This function can only be called after loading the init files");
2237 /* Get rid of stdin, stdout and stderr. */
2238 nfd
= open ("/dev/null", O_RDWR
);
2240 err
|= dup2 (nfd
, 0) < 0;
2241 err
|= dup2 (nfd
, 1) < 0;
2242 err
|= dup2 (nfd
, 2) < 0;
2243 err
|= close (nfd
) != 0;
2245 /* Closing the pipe will notify the parent that it can exit.
2246 FIXME: In case some other process inherited the pipe, closing it here
2247 won't notify the parent because it's still open elsewhere, so we
2248 additionally send a byte, just to make sure the parent really exits.
2249 Instead, we should probably close the pipe in start-process and
2250 call-process to make sure the pipe is never inherited by
2252 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2253 err
|= close (daemon_pipe
[1]) != 0;
2254 /* Set it to an invalid value so we know we've already run this function. */
2255 daemon_pipe
[1] = -1;
2258 error ("I/O error during daemon initialization");
2263 syms_of_emacs (void)
2265 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2266 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2267 DEFSYM (Qkill_emacs
, "kill-emacs");
2270 defsubr (&Sdump_emacs
);
2273 defsubr (&Skill_emacs
);
2275 defsubr (&Sinvocation_name
);
2276 defsubr (&Sinvocation_directory
);
2277 defsubr (&Sdaemonp
);
2278 defsubr (&Sdaemon_initialized
);
2280 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2281 doc
: /* Args passed by shell to Emacs, as a list of strings.
2282 Many arguments are deleted from the list as they are processed. */);
2284 DEFVAR_LISP ("system-type", Vsystem_type
,
2285 doc
: /* The value is a symbol indicating the type of operating system you are using.
2287 `gnu' compiled for a GNU Hurd system.
2288 `gnu/linux' compiled for a GNU/Linux system.
2289 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2290 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2291 `ms-dos' compiled as an MS-DOS application.
2292 `windows-nt' compiled as a native W32 application.
2293 `cygwin' compiled using the Cygwin library.
2294 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2295 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2296 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2297 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2299 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2300 doc
: /* Value is string indicating configuration Emacs was built for.
2301 On MS-Windows, the value reflects the OS flavor and version on which
2302 Emacs is running. */);
2303 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2305 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2306 doc
: /* String containing the configuration options Emacs was built with. */);
2307 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2309 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2310 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2312 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2313 doc
: /* Hook run when `kill-emacs' is called.
2314 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2315 in other similar situations), functions placed on this hook should not
2316 expect to be able to interact with the user. To ask for confirmation,
2317 see `kill-emacs-query-functions' instead.
2319 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2320 `noninteractive' was non-nil. */);
2321 Vkill_emacs_hook
= Qnil
;
2323 DEFVAR_LISP ("path-separator", Vpath_separator
,
2324 doc
: /* String containing the character that separates directories in
2325 search paths, such as PATH and other similar environment variables. */);
2328 Vpath_separator
= make_string (&c
, 1);
2331 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2332 doc
: /* The program name that was used to run Emacs.
2333 Any directory names are omitted. */);
2335 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2336 doc
: /* The directory in which the Emacs executable was found, to run it.
2337 The value is nil if that directory's name is not known. */);
2339 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2340 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2341 In an installed Emacs, this is normally nil. It is non-nil if
2342 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2343 within the variable `invocation-directory' or its parent. For example,
2344 this is the case when running an uninstalled Emacs executable from its
2345 build directory. */);
2346 Vinstallation_directory
= Qnil
;
2348 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2349 doc
: /* System locale for messages. */);
2350 Vsystem_messages_locale
= Qnil
;
2352 DEFVAR_LISP ("previous-system-messages-locale",
2353 Vprevious_system_messages_locale
,
2354 doc
: /* Most recently used system locale for messages. */);
2355 Vprevious_system_messages_locale
= Qnil
;
2357 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2358 doc
: /* System locale for time. */);
2359 Vsystem_time_locale
= Qnil
;
2361 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2362 doc
: /* Most recently used system locale for time. */);
2363 Vprevious_system_time_locale
= Qnil
;
2365 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2366 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2367 Vbefore_init_time
= Qnil
;
2369 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2370 doc
: /* Value of `current-time' after loading the init files.
2371 This is nil during initialization. */);
2372 Vafter_init_time
= Qnil
;
2374 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2375 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2376 inhibit_x_resources
= 0;
2378 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2379 doc
: /* Short copyright string for this version of Emacs. */);
2380 Vemacs_copyright
= build_string (emacs_copyright
);
2382 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2383 doc
: /* Version numbers of this version of Emacs. */);
2384 Vemacs_version
= build_string (emacs_version
);
2386 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2387 doc
: /* Alist of dynamic libraries vs external files implementing them.
2388 Each element is a list (LIBRARY FILE...), where the car is a symbol
2389 representing a supported external library, and the rest are strings giving
2390 alternate filenames for that library.
2392 Emacs tries to load the library from the files in the order they appear on
2393 the list; if none is loaded, the running session of Emacs won't have access
2396 Note that image types `pbm' and `xbm' do not need entries in this variable
2397 because they do not depend on external libraries and are always available.
2399 Also note that this is not a generic facility for accessing external
2400 libraries; only those already known by Emacs will be loaded. */);
2401 Vdynamic_library_alist
= Qnil
;
2402 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2405 Vlibrary_cache
= Qnil
;
2406 staticpro (&Vlibrary_cache
);
2409 /* Make sure IS_DAEMON starts up as false. */