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"
70 #include "blockinput.h"
71 #include "syssignal.h"
74 #include "termhooks.h"
82 #if (defined PROFILING \
83 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
84 # include <sys/gmon.h>
85 extern void moncontrol (int mode
);
94 #include <sys/resource.h>
97 #ifdef HAVE_PERSONALITY_LINUX32
98 #include <sys/personality.h>
101 static const char emacs_version
[] = VERSION
;
102 static const char emacs_copyright
[] = COPYRIGHT
;
104 /* Empty lisp strings. To avoid having to build any others. */
105 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
108 /* Cache for externally loaded libraries. */
109 Lisp_Object Vlibrary_cache
;
112 /* Set after Emacs has started up the first time.
113 Prevents reinitialization of the Lisp world and keymaps
114 on subsequent starts. */
118 extern void unexec_init_emacs_zone (void);
121 #ifdef DOUG_LEA_MALLOC
122 /* Preserves a pointer to the memory allocated that copies that
123 static data inside glibc's malloc. */
124 static void *malloc_state_ptr
;
125 /* From glibc, a routine that returns a copy of the malloc internal state. */
126 extern void *malloc_get_state (void);
127 /* From glibc, a routine that overwrites the malloc internal state. */
128 extern int malloc_set_state (void*);
129 /* True if the MALLOC_CHECK_ environment variable was set while
130 dumping. Used to work around a bug in glibc's malloc. */
131 static bool malloc_using_checking
;
134 Lisp_Object Qfile_name_handler_alist
;
136 Lisp_Object Qrisky_local_variable
;
138 Lisp_Object Qkill_emacs
;
140 /* If true, Emacs should not attempt to use a window-specific code,
141 but instead should use the virtual terminal under which it was started. */
142 bool inhibit_window_system
;
144 /* If true, a filter or a sentinel is running. Tested to save the match
145 data on the first attempt to change it inside asynchronous code. */
146 bool running_asynch_code
;
148 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
149 /* If true, -d was specified, meaning we're using some window system. */
153 /* An address near the bottom of the stack.
154 Tells GC how to save a copy of the stack. */
157 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
158 /* The address where the heap starts (from the first sbrk (0) call). */
159 static void *my_heap_start
;
163 /* The gap between BSS end and heap start as far as we can tell. */
164 static uprintmax_t heap_bss_diff
;
167 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
170 On Cocoa, CoreFoundation lib fails in forked process:
171 http://developer.apple.com/ReleaseNotes/
172 CoreFoundation/CoreFoundation.html)
174 On Windows, a Cygwin fork child cannot access the USER subsystem.
176 We mark being in the exec'd process by a daemon name argument of
177 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
178 NAME is the original daemon name, if any. */
179 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
180 # define DAEMON_MUST_EXEC
183 /* True means running Emacs without interactive terminal. */
186 /* True means remove site-lisp directories from load-path. */
189 /* Name for the server started by the daemon.*/
190 static char *daemon_name
;
192 /* Pipe used to send exit notification to the daemon parent at
196 /* Save argv and argc. */
200 static void sort_args (int argc
, char **argv
);
201 static void syms_of_emacs (void);
203 /* MSVC needs each string be shorter than 2048 bytes, so the usage
204 strings below are split to not overflow this limit. */
206 Usage: %s [OPTION-OR-FILENAME]...\n\
208 Run Emacs, the extensible, customizable, self-documenting real-time\n\
209 display editor. The recommended way to start Emacs for normal editing\n\
210 is with no options at all.\n\
212 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
213 read the main documentation for these command-line arguments.\n\
215 Initialization options:\n\
217 --batch do not do interactive display; implies -q\n\
218 --chdir DIR change to directory DIR\n\
219 --daemon start a server in the background\n\
220 --debug-init enable Emacs Lisp debugger for init file\n\
221 --display, -d DISPLAY use X server DISPLAY\n\
222 --no-desktop do not load a saved desktop\n\
223 --no-init-file, -q load neither ~/.emacs nor default.el\n\
224 --no-shared-memory, -nl do not use shared memory\n\
225 --no-site-file do not load site-start.el\n\
226 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
227 --no-splash do not display a splash screen on startup\n\
228 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
229 --quick, -Q equivalent to:\n\
230 -q --no-site-file --no-site-lisp --no-splash\n\
231 --script FILE run FILE as an Emacs Lisp script\n\
232 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
233 --user, -u USER load ~USER/.emacs instead of your own\n\
239 FILE visit FILE using find-file\n\
240 +LINE go to line LINE in next FILE\n\
241 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
242 --directory, -L DIR add DIR to variable load-path\n\
243 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
244 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
245 --file FILE visit FILE using find-file\n\
246 --find-file FILE visit FILE using find-file\n\
247 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
248 --insert FILE insert contents of FILE into current buffer\n\
249 --kill exit without asking for confirmation\n\
250 --load, -l FILE load Emacs Lisp FILE using the load function\n\
251 --visit FILE visit FILE using find-file\n\
257 --background-color, -bg COLOR window background color\n\
258 --basic-display, -D disable many display features;\n\
259 used for debugging Emacs\n\
260 --border-color, -bd COLOR main border color\n\
261 --border-width, -bw WIDTH width of main border\n\
262 --color, --color=MODE override color mode for character terminals;\n\
263 MODE defaults to `auto', and\n\
264 can also be `never', `always',\n\
265 or a mode name like `ansi8'\n\
266 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
267 --font, -fn FONT default font; must be fixed-width\n\
268 --foreground-color, -fg COLOR window foreground color\n\
269 --fullheight, -fh make the first frame high as the screen\n\
270 --fullscreen, -fs make the first frame fullscreen\n\
271 --fullwidth, -fw make the first frame wide as the screen\n\
272 --maximized, -mm make the first frame maximized\n\
273 --geometry, -g GEOMETRY window geometry\n\
274 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
275 --iconic start Emacs in iconified state\n\
276 --internal-border, -ib WIDTH width between text and main border\n\
277 --line-spacing, -lsp PIXELS additional space to put between lines\n\
278 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
279 --name NAME title for initial Emacs frame\n\
280 --no-blinking-cursor, -nbc disable blinking cursor\n\
281 --reverse-video, -r, -rv switch foreground and background\n\
282 --title, -T TITLE title for initial Emacs frame\n\
283 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
284 --xrm XRESOURCES set additional X resources\n\
285 --parent-id XID set parent window\n\
286 --help display this help and exit\n\
287 --version output version information and exit\n\
291 You can generally also specify long option names with a single -; for\n\
292 example, -batch as well as --batch. You can use any unambiguous\n\
293 abbreviation for a --option.\n\
295 Various environment variables and window system resources also affect\n\
296 Emacs' operation. See the main documentation.\n\
298 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
299 section of the Emacs manual or the file BUGS.\n"
302 /* True if handling a fatal error already. */
303 bool fatal_error_in_progress
;
306 /* NS autrelease pool, for memory management. */
307 static void *ns_pool
;
312 /* Report a fatal error due to signal SIG, output a backtrace of at
313 most BACKTRACE_LIMIT lines, and exit. */
315 terminate_due_to_signal (int sig
, int backtrace_limit
)
317 signal (sig
, SIG_DFL
);
318 totally_unblock_input ();
320 /* If fatal error occurs in code below, avoid infinite recursion. */
321 if (! fatal_error_in_progress
)
323 fatal_error_in_progress
= 1;
325 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
326 Fkill_emacs (make_number (sig
));
328 shut_down_emacs (sig
, Qnil
);
329 emacs_backtrace (backtrace_limit
);
332 /* Signal the same code; this time it will really be fatal.
333 Since we're in a signal handler, the signal is blocked, so we
334 have to unblock it if we want to really receive it. */
338 sigemptyset (&unblocked
);
339 sigaddset (&unblocked
, sig
);
340 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
346 /* This shouldn't be executed, but it prevents a warning. */
352 /* Handler for SIGDANGER. */
354 handle_danger_signal (int sig
)
356 malloc_warning ("Operating system warns that virtual memory is running low.\n");
358 /* It might be unsafe to call do_auto_save now. */
359 force_auto_save_soon ();
363 deliver_danger_signal (int sig
)
365 deliver_process_signal (sig
, handle_danger_signal
);
369 /* Code for dealing with Lisp access to the Unix command line. */
372 init_cmdargs (int argc
, char **argv
, int skip_args
)
375 Lisp_Object name
, dir
, handler
;
376 ptrdiff_t count
= SPECPDL_INDEX ();
377 Lisp_Object raw_name
;
382 raw_name
= build_string (argv
[0]);
384 /* Add /: to the front of the name
385 if it would otherwise be treated as magic. */
386 handler
= Ffind_file_name_handler (raw_name
, Qt
);
387 if (! NILP (handler
))
388 raw_name
= concat2 (build_string ("/:"), raw_name
);
390 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
391 Vinvocation_directory
= Ffile_name_directory (raw_name
);
393 /* If we got no directory in argv[0], search PATH to find where
394 Emacs actually came from. */
395 if (NILP (Vinvocation_directory
))
398 int yes
= openp (Vexec_path
, Vinvocation_name
,
399 Vexec_suffixes
, &found
, make_number (X_OK
));
402 /* Add /: to the front of the name
403 if it would otherwise be treated as magic. */
404 handler
= Ffind_file_name_handler (found
, Qt
);
405 if (! NILP (handler
))
406 found
= concat2 (build_string ("/:"), found
);
407 Vinvocation_directory
= Ffile_name_directory (found
);
411 if (!NILP (Vinvocation_directory
)
412 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
413 /* Emacs was started with relative path, like ./emacs.
415 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
417 Vinstallation_directory
= Qnil
;
419 if (!NILP (Vinvocation_directory
))
421 dir
= Vinvocation_directory
;
423 /* If we are running from the build directory, set DIR to the
424 src subdirectory of the Emacs tree, like on Posix
426 if (SBYTES (dir
) > sizeof ("/i386/") - 1
427 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
429 dir
= Fexpand_file_name (build_string ("../.."), dir
);
430 #else /* !WINDOWSNT */
432 name
= Fexpand_file_name (Vinvocation_name
, dir
);
435 Lisp_Object tem
, lib_src_exists
;
436 Lisp_Object etc_exists
, info_exists
;
438 /* See if dir contains subdirs for use by Emacs.
439 Check for the ones that would exist in a build directory,
440 not including lisp and info. */
441 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
442 lib_src_exists
= Ffile_exists_p (tem
);
445 /* MSDOS installations frequently remove lib-src, but we still
446 must set installation-directory, or else info won't find
447 its files (it uses the value of installation-directory). */
448 tem
= Fexpand_file_name (build_string ("info"), dir
);
449 info_exists
= Ffile_exists_p (tem
);
454 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
456 tem
= Fexpand_file_name (build_string ("etc"), dir
);
457 etc_exists
= Ffile_exists_p (tem
);
458 if (!NILP (etc_exists
))
460 Vinstallation_directory
461 = Ffile_name_as_directory (dir
);
466 /* See if dir's parent contains those subdirs. */
467 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
468 lib_src_exists
= Ffile_exists_p (tem
);
472 /* See the MSDOS commentary above. */
473 tem
= Fexpand_file_name (build_string ("../info"), dir
);
474 info_exists
= Ffile_exists_p (tem
);
479 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
481 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
482 etc_exists
= Ffile_exists_p (tem
);
483 if (!NILP (etc_exists
))
485 tem
= Fexpand_file_name (build_string (".."), dir
);
486 Vinstallation_directory
487 = Ffile_name_as_directory (tem
);
492 /* If the Emacs executable is actually a link,
493 next try the dir that the link points into. */
494 tem
= Ffile_symlink_p (name
);
497 name
= Fexpand_file_name (tem
, dir
);
498 dir
= Ffile_name_directory (name
);
505 Vcommand_line_args
= Qnil
;
507 for (i
= argc
- 1; i
>= 0; i
--)
509 if (i
== 0 || i
> skip_args
)
510 /* For the moment, we keep arguments as is in unibyte strings.
511 They are decoded in the function command-line after we know
512 locale-coding-system. */
514 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
518 unbind_to (count
, Qnil
);
521 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
522 doc
: /* Return the program name that was used to run Emacs.
523 Any directory names are omitted. */)
526 return Fcopy_sequence (Vinvocation_name
);
529 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
531 doc
: /* Return the directory name in which the Emacs executable was located. */)
534 return Fcopy_sequence (Vinvocation_directory
);
539 /* A valid but unlikely value for the TZ environment value.
540 It is OK (though a bit slower) if the user actually chooses this value. */
541 static char dump_tz
[] = "UtC0";
544 #ifndef ORDINARY_LINK
545 /* We don't include crtbegin.o and crtend.o in the link,
546 so these functions and variables might be missed.
547 Provide dummy definitions to avoid error.
548 (We don't have any real constructors or destructors.) */
551 /* Define a dummy function F. Declare F too, to pacify gcc
552 -Wmissing-prototypes. */
553 #define DEFINE_DUMMY_FUNCTION(f) \
554 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
556 #ifndef GCC_CTORS_IN_LIBC
557 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
558 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
559 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
560 /* GNU/Linux has a bug in its library; avoid an error. */
562 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
564 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
565 #endif /* GCC_CTORS_IN_LIBC */
566 DEFINE_DUMMY_FUNCTION (__main
)
567 #endif /* __GNUC__ */
568 #endif /* ORDINARY_LINK */
570 /* Test whether the next argument in ARGV matches SSTR or a prefix of
571 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
572 (the argument is supposed to have a value) store in *VALPTR either
573 the next argument or the portion of this one after the equal sign.
574 ARGV is read starting at position *SKIPPTR; this index is advanced
575 by the number of arguments used.
577 Too bad we can't just use getopt for all of this, but we don't have
578 enough information to do it right. */
581 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
582 int minlen
, char **valptr
, int *skipptr
)
588 /* Don't access argv[argc]; give up in advance. */
589 if (argc
<= *skipptr
+ 1)
592 arg
= argv
[*skipptr
+1];
595 if (strcmp (arg
, sstr
) == 0)
599 *valptr
= argv
[*skipptr
+2];
606 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
607 ? p
- arg
: strlen (arg
));
608 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
610 else if (valptr
== NULL
)
621 else if (argv
[*skipptr
+2] != NULL
)
623 *valptr
= argv
[*skipptr
+2];
633 #ifdef DOUG_LEA_MALLOC
635 /* malloc can be invoked even before main (e.g. by the dynamic
636 linker), so the dumped malloc state must be restored as early as
637 possible using this special hook. */
640 malloc_initialize_hook (void)
644 if (!malloc_using_checking
)
645 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
646 ignored if the heap to be restored was constructed without
647 malloc checking. Can't use unsetenv, since that calls malloc. */
651 for (p
= environ
; p
&& *p
; p
++)
652 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
661 malloc_set_state (malloc_state_ptr
);
662 #ifndef XMALLOC_OVERRUN_CHECK
663 free (malloc_state_ptr
);
668 if (my_heap_start
== 0)
669 my_heap_start
= sbrk (0);
670 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
674 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
676 #endif /* DOUG_LEA_MALLOC */
678 /* Close standard output and standard error, reporting any write
679 errors as best we can. This is intended for use with atexit. */
681 close_output_streams (void)
683 if (close_stream (stdout
) != 0)
685 fprintf (stderr
, "Write error to standard output: %s\n",
688 _exit (EXIT_FAILURE
);
691 if (close_stream (stderr
) != 0)
692 _exit (EXIT_FAILURE
);
697 main (int argc
, char **argv
)
702 char stack_bottom_variable
;
703 bool do_initial_setlocale
;
706 #ifdef HAVE_SETRLIMIT
712 #ifdef DAEMON_MUST_EXEC
721 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
722 /* This is used by the Cygwin build. */
723 setenv ("G_SLICE", "always-malloc", 1);
729 extern char my_endbss
[];
730 extern char *my_endbss_static
;
732 if (my_heap_start
== 0)
733 my_heap_start
= sbrk (0);
735 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
739 #ifdef RUN_TIME_REMAP
741 run_time_remap (argv
[0]);
744 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
747 unexec_init_emacs_zone ();
750 atexit (close_output_streams
);
752 sort_args (argc
, argv
);
754 while (argv
[argc
]) argc
++;
756 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
758 const char *version
, *copyright
;
761 Lisp_Object tem
, tem2
;
762 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
763 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
766 fprintf (stderr
, "Invalid value of `emacs-version'\n");
771 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
776 version
= SSDATA (tem
);
777 copyright
= SSDATA (tem2
);
782 version
= emacs_version
;
783 copyright
= emacs_copyright
;
785 printf ("GNU Emacs %s\n", version
);
786 printf ("%s\n", copyright
);
787 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
788 printf ("You may redistribute copies of Emacs\n");
789 printf ("under the terms of the GNU General Public License.\n");
790 printf ("For more information about these matters, ");
791 printf ("see the file named COPYING.\n");
795 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
796 if (chdir (ch_to_dir
) == -1)
798 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
799 argv
[0], ch_to_dir
, strerror (errno
));
803 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
804 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
806 #ifdef HAVE_PERSONALITY_LINUX32
807 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
809 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
810 /* Set this so we only do this once. */
813 /* A flag to turn off address randomization which is introduced
814 in linux kernel shipped with fedora core 4 */
815 #define ADD_NO_RANDOMIZE 0x0040000
816 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
817 #undef ADD_NO_RANDOMIZE
819 execvp (argv
[0], argv
);
821 /* If the exec fails, try to dump anyway. */
824 #endif /* HAVE_PERSONALITY_LINUX32 */
826 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
827 /* Extend the stack space available.
828 Don't do that if dumping, since some systems (e.g. DJGPP)
829 might define a smaller stack limit at that time. */
832 && (!noninteractive
|| initialized
)
834 && !getrlimit (RLIMIT_STACK
, &rlim
))
837 extern size_t re_max_failures
;
838 /* Approximate the amount regex.c needs per unit of re_max_failures. */
839 int ratio
= 20 * sizeof (char *);
840 /* Then add 33% to cover the size of the smaller stacks that regex.c
841 successively allocates and discards, on its way to the maximum. */
843 /* Add in some extra to cover
844 what we're likely to use for other reasons. */
845 newlim
= re_max_failures
* ratio
+ 200000;
847 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
848 stack allocation routine for new process that the allocation
849 fails if stack limit is not on page boundary. So, round up the
850 new limit to page boundary. */
851 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
853 if (newlim
> rlim
.rlim_max
)
855 newlim
= rlim
.rlim_max
;
856 /* Don't let regex.c overflow the stack we have. */
857 re_max_failures
= (newlim
- 200000) / ratio
;
859 if (rlim
.rlim_cur
< newlim
)
860 rlim
.rlim_cur
= newlim
;
862 setrlimit (RLIMIT_STACK
, &rlim
);
864 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
866 /* Record (approximately) where the stack begins. */
867 stack_bottom
= &stack_bottom_variable
;
871 #ifndef SYSTEM_MALLOC
872 /* Arrange to get warning messages as memory fills up. */
873 memory_warnings (0, malloc_warning
);
875 /* Call malloc at least once, to run malloc_initialize_hook.
876 Also call realloc and free for consistency. */
877 free (realloc (malloc (4), 4));
879 #endif /* not SYSTEM_MALLOC */
881 #if defined (MSDOS) || defined (WINDOWSNT)
882 /* We do all file input/output as binary files. When we need to translate
883 newlines, we do that manually. */
885 #endif /* MSDOS || WINDOWSNT */
888 if (!isatty (fileno (stdin
)))
889 setmode (fileno (stdin
), O_BINARY
);
890 if (!isatty (fileno (stdout
)))
893 setmode (fileno (stdout
), O_BINARY
);
897 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
898 The build procedure uses this while dumping, to ensure that the
899 dumped Emacs does not have its system locale tables initialized,
900 as that might cause screwups when the dumped Emacs starts up. */
902 char *lc_all
= getenv ("LC_ALL");
903 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
906 /* Set locale now, so that initial error messages are localized properly.
907 fixup_locale must wait until later, since it builds strings. */
908 if (do_initial_setlocale
)
909 setlocale (LC_ALL
, "");
911 inhibit_window_system
= 0;
913 /* Handle the -t switch, which specifies filename to use as terminal. */
917 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
922 result
= emacs_open (term
, O_RDWR
, 0);
923 if (result
< 0 || dup (0) < 0)
925 char *errstring
= strerror (errno
);
926 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
931 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
934 fprintf (stderr
, "Using %s\n", term
);
935 #ifdef HAVE_WINDOW_SYSTEM
936 inhibit_window_system
= 1; /* -t => -nw */
943 /* Command line option --no-windows is deprecated and thus not mentioned
944 in the manual and usage information. */
945 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
946 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
947 inhibit_window_system
= 1;
949 /* Handle the -batch switch, which means don't do interactive display. */
951 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
954 Vundo_outer_limit
= Qnil
;
956 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
958 noninteractive
= 1; /* Set batch mode. */
959 /* Convert --script to -scriptload, un-skip it, and sort again
960 so that it will be handled in proper sequence. */
961 /* FIXME broken for --script=FILE - is that supposed to work? */
962 argv
[skip_args
- 1] = (char *) "-scriptload";
964 sort_args (argc
, argv
);
967 /* Handle the --help option, which gives a usage message. */
968 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
970 printf (USAGE1
, argv
[0], USAGE2
);
976 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
977 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
982 /* Start as a daemon: fork a new child process which will run the
983 rest of the initialization code, then exit.
985 Detaching a daemon requires the following steps:
989 - close the tty file-descriptors
991 We only want to do the last 2 steps once the daemon is ready to
992 serve requests, i.e. after loading .emacs (initialization).
993 OTOH initialization may start subprocesses (e.g. ispell) and these
994 should be run from the proper process (the one that will end up
995 running as daemon) and with the proper "session id" in order for
996 them to keep working after detaching, so fork and setsid need to be
997 performed before initialization.
999 We want to avoid exiting before the server socket is ready, so
1000 use a pipe for synchronization. The parent waits for the child
1001 to close its end of the pipe (using `daemon-initialized')
1003 if (pipe (daemon_pipe
) == -1)
1005 fprintf (stderr
, "Cannot pipe!\n");
1009 #ifndef DAEMON_MUST_EXEC
1011 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1012 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1013 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1014 #endif /* USE_GTK */
1016 #else /* DAEMON_MUST_EXEC */
1017 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1018 f
= fork (); /* in orig */
1020 f
= 0; /* in exec'd */
1021 #endif /* !DAEMON_MUST_EXEC */
1027 /* Close unused writing end of the pipe. */
1028 close (daemon_pipe
[1]);
1030 /* Just wait for the child to close its end of the pipe. */
1033 retval
= read (daemon_pipe
[0], &buf
, 1);
1035 while (retval
== -1 && errno
== EINTR
);
1039 fprintf (stderr
, "Error reading status from child\n");
1042 else if (retval
== 0)
1044 fprintf (stderr
, "Error: server did not start correctly\n");
1048 close (daemon_pipe
[0]);
1053 fprintf (stderr
, "Cannot fork!\n");
1057 #ifdef DAEMON_MUST_EXEC
1059 /* In orig process, forked as child, OR in exec'd. */
1060 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1061 { /* In orig, child: now exec w/special daemon name. */
1064 snprintf (fdStr
, sizeof fdStr
,
1065 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1066 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1068 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1070 fprintf (stderr
, "daemon: child name too long\n");
1074 argv
[skip_args
] = fdStr
;
1076 execv (argv
[0], argv
);
1077 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1081 /* In exec'd: parse special dname into pipe and name info. */
1082 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1083 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1085 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1088 dname_arg2
[0] = '\0';
1089 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1091 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1093 #endif /* DAEMON_MUST_EXEC */
1096 daemon_name
= xstrdup (dname_arg
);
1097 /* Close unused reading end of the pipe. */
1098 close (daemon_pipe
[0]);
1099 /* Make sure that the used end of the pipe is closed on exec, so
1100 that it is not accessible to programs started from .emacs. */
1101 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1105 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1110 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1111 if (! noninteractive
)
1113 extern void malloc_enable_thread (void);
1115 malloc_enable_thread ();
1119 init_signals (dumping
);
1121 noninteractive1
= noninteractive
;
1123 /* Perform basic initializations (not merely interning symbols). */
1130 init_charset_once ();
1131 init_coding_once ();
1132 init_syntax_once (); /* Create standard syntax table. */
1133 init_category_once (); /* Create standard category table. */
1134 /* Must be done before init_buffer. */
1135 init_casetab_once ();
1136 init_buffer_once (); /* Create buffer table and some buffers. */
1137 init_minibuf_once (); /* Create list of minibuffers. */
1138 /* Must precede init_window_once. */
1140 /* Call syms_of_xfaces before init_window_once because that
1141 function creates Vterminal_frame. Termcap frames now use
1142 faces, and the face implementation uses some symbols as
1145 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1146 be better to arrange things not to have this dependency. */
1148 /* Call syms_of_keyboard before init_window_once because
1149 keyboard sets up symbols that include some face names that
1150 the X support will want to use. This can happen when
1151 CANNOT_DUMP is defined. */
1152 syms_of_keyboard ();
1154 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1156 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
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. */
1351 syms_of_floatfns ();
1354 syms_of_bytecode ();
1356 syms_of_casefiddle ();
1358 syms_of_category ();
1360 syms_of_character ();
1367 syms_of_filelock ();
1370 /* syms_of_keymap (); */
1378 syms_of_terminal ();
1384 syms_of_textprop ();
1385 syms_of_composite ();
1388 #endif /* WINDOWSNT */
1389 #if defined CYGWIN && defined HAVE_NTGUI
1395 #ifdef HAVE_WINDOW_SYSTEM
1398 #endif /* HAVE_WINDOW_SYSTEM */
1399 #ifdef HAVE_X_WINDOWS
1404 #ifdef HAVE_XWIDGETS
1407 syms_of_xsettings ();
1414 #endif /* HAVE_X_WINDOWS */
1427 #endif /* HAVE_NTGUI */
1429 #if defined WINDOWSNT || defined HAVE_NTGUI
1430 syms_of_w32select ();
1437 syms_of_win16select ();
1444 syms_of_nsselect ();
1446 #endif /* HAVE_NS */
1453 syms_of_dbusbind ();
1454 #endif /* HAVE_DBUS */
1458 #endif /* WINDOWSNT */
1460 syms_of_profiler ();
1462 keys_of_casefiddle ();
1465 keys_of_keyboard ();
1471 /* Initialization that must be done even if the global variable
1472 initialized is non zero. */
1474 globals_of_w32font ();
1475 globals_of_w32fns ();
1476 globals_of_w32menu ();
1477 #endif /* HAVE_NTGUI */
1479 #if defined WINDOWSNT || defined HAVE_NTGUI
1480 globals_of_w32select ();
1486 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1487 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1488 init_keyboard (); /* This too must precede init_sys_modes. */
1489 if (!noninteractive
)
1490 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1492 #ifdef HAVE_WINDOW_SYSTEM
1494 #endif /* HAVE_WINDOW_SYSTEM */
1502 /* Handle -l loadup, args passed by Makefile. */
1503 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1504 Vtop_level
= Fcons (intern_c_string ("load"),
1505 Fcons (build_string (file
), Qnil
));
1506 /* Unless next switch is -nl, load "loadup.el" first thing. */
1508 Vtop_level
= Fcons (intern_c_string ("load"),
1509 Fcons (build_string ("loadup.el"), Qnil
));
1516 /* If the execution TZ happens to be the same as the dump TZ,
1517 change it to some other value and then change it back,
1518 to force the underlying implementation to reload the TZ info.
1519 This is needed on implementations that load TZ info from files,
1520 since the TZ file contents may differ between dump and execution. */
1521 char *tz
= getenv ("TZ");
1522 if (tz
&& !strcmp (tz
, dump_tz
))
1532 /* Set up for profiling. This is known to work on FreeBSD,
1533 GNU/Linux and MinGW. It might work on some other systems too.
1534 Give it a try and tell us if it works on your system. To compile
1535 for profiling, use the configure option --enable-profiling. */
1536 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1541 extern unsigned char etext
asm ("etext");
1547 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1556 #ifdef LOCALTIME_CACHE
1557 /* Some versions of localtime have a bug. They cache the value of the time
1558 zone rather than looking it up every time. Since localtime() is
1559 called to bolt the undumping time into the undumped emacs, this
1560 results in localtime ignoring the TZ environment variable.
1561 This flushes the new TZ value into localtime. */
1563 #endif /* defined (LOCALTIME_CACHE) */
1565 /* Enter editor command loop. This never returns. */
1571 /* Sort the args so we can find the most important ones
1572 at the beginning of argv. */
1574 /* First, here's a table of all the standard options. */
1576 struct standard_args
1579 const char *longname
;
1584 static const struct standard_args standard_args
[] =
1586 { "-version", "--version", 150, 0 },
1587 { "-chdir", "--chdir", 130, 1 },
1588 { "-t", "--terminal", 120, 1 },
1589 { "-nw", "--no-window-system", 110, 0 },
1590 { "-nw", "--no-windows", 110, 0 },
1591 { "-batch", "--batch", 100, 0 },
1592 { "-script", "--script", 100, 1 },
1593 { "-daemon", "--daemon", 99, 0 },
1594 { "-help", "--help", 90, 0 },
1595 { "-nl", "--no-loadup", 70, 0 },
1596 { "-nsl", "--no-site-lisp", 65, 0 },
1597 /* -d must come last before the options handled in startup.el. */
1598 { "-d", "--display", 60, 1 },
1599 { "-display", 0, 60, 1 },
1600 /* Now for the options handled in `command-line' (startup.el). */
1601 /* (Note that to imply -nsl, -Q is partially handled here.) */
1602 { "-Q", "--quick", 55, 0 },
1603 { "-quick", 0, 55, 0 },
1604 { "-q", "--no-init-file", 50, 0 },
1605 { "-no-init-file", 0, 50, 0 },
1606 { "-no-site-file", "--no-site-file", 40, 0 },
1607 { "-u", "--user", 30, 1 },
1608 { "-user", 0, 30, 1 },
1609 { "-debug-init", "--debug-init", 20, 0 },
1610 { "-iconic", "--iconic", 15, 0 },
1611 { "-D", "--basic-display", 12, 0},
1612 { "-basic-display", 0, 12, 0},
1613 { "-nbc", "--no-blinking-cursor", 12, 0 },
1614 /* Now for the options handled in `command-line-1' (startup.el). */
1615 { "-nbi", "--no-bitmap-icon", 10, 0 },
1616 { "-bg", "--background-color", 10, 1 },
1617 { "-background", 0, 10, 1 },
1618 { "-fg", "--foreground-color", 10, 1 },
1619 { "-foreground", 0, 10, 1 },
1620 { "-bd", "--border-color", 10, 1 },
1621 { "-bw", "--border-width", 10, 1 },
1622 { "-ib", "--internal-border", 10, 1 },
1623 { "-ms", "--mouse-color", 10, 1 },
1624 { "-cr", "--cursor-color", 10, 1 },
1625 { "-fn", "--font", 10, 1 },
1626 { "-font", 0, 10, 1 },
1627 { "-fs", "--fullscreen", 10, 0 },
1628 { "-fw", "--fullwidth", 10, 0 },
1629 { "-fh", "--fullheight", 10, 0 },
1630 { "-mm", "--maximized", 10, 0 },
1631 { "-g", "--geometry", 10, 1 },
1632 { "-geometry", 0, 10, 1 },
1633 { "-T", "--title", 10, 1 },
1634 { "-title", 0, 10, 1 },
1635 { "-name", "--name", 10, 1 },
1636 { "-xrm", "--xrm", 10, 1 },
1637 { "-parent-id", "--parent-id", 10, 1 },
1638 { "-r", "--reverse-video", 5, 0 },
1640 { "-reverse", 0, 5, 0 },
1641 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1642 { "-vb", "--vertical-scroll-bars", 5, 0 },
1643 { "-color", "--color", 5, 0},
1644 { "-no-splash", "--no-splash", 3, 0 },
1645 { "-no-desktop", "--no-desktop", 3, 0 },
1647 { "-NSAutoLaunch", 0, 5, 1 },
1648 { "-NXAutoLaunch", 0, 5, 1 },
1649 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1650 { "-_NSMachLaunch", 0, 85, 1 },
1651 { "-MachLaunch", 0, 85, 1 },
1652 { "-macosx", 0, 85, 0 },
1653 { "-NSHost", 0, 85, 1 },
1655 /* These have the same priority as ordinary file name args,
1656 so they are not reordered with respect to those. */
1657 { "-L", "--directory", 0, 1 },
1658 { "-directory", 0, 0, 1 },
1659 { "-l", "--load", 0, 1 },
1660 { "-load", 0, 0, 1 },
1661 /* This has no longname, because using --scriptload confuses sort_args,
1662 because then the --script long option seems to match twice; ie
1663 you can't have a long option which is a prefix of another long
1664 option. In any case, this is entirely an internal option. */
1665 { "-scriptload", NULL
, 0, 1 },
1666 { "-f", "--funcall", 0, 1 },
1667 { "-funcall", 0, 0, 1 },
1668 { "-eval", "--eval", 0, 1 },
1669 { "-execute", "--execute", 0, 1 },
1670 { "-find-file", "--find-file", 0, 1 },
1671 { "-visit", "--visit", 0, 1 },
1672 { "-file", "--file", 0, 1 },
1673 { "-insert", "--insert", 0, 1 },
1675 { "-NXOpen", 0, 0, 1 },
1676 { "-NXOpenTemp", 0, 0, 1 },
1677 { "-NSOpen", 0, 0, 1 },
1678 { "-NSOpenTemp", 0, 0, 1 },
1679 { "-GSFilePath", 0, 0, 1 },
1681 /* This should be processed after ordinary file name args and the like. */
1682 { "-kill", "--kill", -10, 0 },
1685 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1686 so that the highest priority ones come first.
1687 Do not change the order of elements of equal priority.
1688 If an option takes an argument, keep it and its argument together.
1690 If an option that takes no argument appears more
1691 than once, eliminate all but one copy of it. */
1694 sort_args (int argc
, char **argv
)
1696 char **new = xmalloc (argc
* sizeof *new);
1697 /* For each element of argv,
1698 the corresponding element of options is:
1699 0 for an option that takes no arguments,
1700 1 for an option that takes one argument, etc.
1701 -1 for an ordinary non-option argument. */
1702 int *options
= xnmalloc (argc
, sizeof *options
);
1703 int *priority
= xnmalloc (argc
, sizeof *priority
);
1705 int incoming_used
= 1;
1709 /* Categorize all the options,
1710 and figure out which argv elts are option arguments. */
1711 for (from
= 1; from
< argc
; from
++)
1715 if (argv
[from
][0] == '-')
1719 /* If we have found "--", don't consider
1720 any more arguments as options. */
1721 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1723 /* Leave the "--", and everything following it, at the end. */
1724 for (; from
< argc
; from
++)
1726 priority
[from
] = -100;
1732 /* Look for a match with a known old-fashioned option. */
1733 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1734 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1736 options
[from
] = standard_args
[i
].nargs
;
1737 priority
[from
] = standard_args
[i
].priority
;
1738 if (from
+ standard_args
[i
].nargs
>= argc
)
1739 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1740 from
+= standard_args
[i
].nargs
;
1744 /* Look for a match with a known long option.
1745 MATCH is -1 if no match so far, -2 if two or more matches so far,
1746 >= 0 (the table index of the match) if just one match so far. */
1747 if (argv
[from
][1] == '-')
1749 char const *equals
= strchr (argv
[from
], '=');
1751 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1756 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1757 if (standard_args
[i
].longname
1758 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1767 /* If we found exactly one match, use that. */
1770 options
[from
] = standard_args
[match
].nargs
;
1771 priority
[from
] = standard_args
[match
].priority
;
1772 /* If --OPTION=VALUE syntax is used,
1773 this option uses just one argv element. */
1776 if (from
+ options
[from
] >= argc
)
1777 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1778 from
+= options
[from
];
1780 /* FIXME When match < 0, shouldn't there be some error,
1781 or at least indication to the user that there was a
1788 /* Copy the arguments, in order of decreasing priority, to NEW. */
1790 while (incoming_used
< argc
)
1793 int best_priority
= -9999;
1795 /* Find the highest priority remaining option.
1796 If several have equal priority, take the first of them. */
1797 for (from
= 1; from
< argc
; from
++)
1799 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1801 best_priority
= priority
[from
];
1804 /* Skip option arguments--they are tied to the options. */
1805 if (options
[from
] > 0)
1806 from
+= options
[from
];
1812 /* Copy the highest priority remaining option, with its args, to NEW.
1813 Unless it is a duplicate of the previous one. */
1814 if (! (options
[best
] == 0
1815 && ! strcmp (new[to
- 1], argv
[best
])))
1817 new[to
++] = argv
[best
];
1818 for (i
= 0; i
< options
[best
]; i
++)
1819 new[to
++] = argv
[best
+ i
+ 1];
1822 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1824 /* Clear out this option in ARGV. */
1826 for (i
= 0; i
< options
[best
]; i
++)
1827 argv
[best
+ i
+ 1] = 0;
1830 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1834 memcpy (argv
, new, sizeof (char *) * argc
);
1841 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1842 doc
: /* Exit the Emacs job and kill it.
1843 If ARG is an integer, return ARG as the exit program code.
1844 If ARG is a string, stuff it as keyboard input.
1846 This function is called upon receipt of the signals SIGTERM
1847 or SIGHUP, and upon SIGINT in batch mode.
1849 The value of `kill-emacs-hook', if not void,
1850 is a list of functions (of no args),
1851 all of which are called before Emacs is actually killed. */)
1854 struct gcpro gcpro1
;
1863 hook
= intern ("kill-emacs-hook");
1864 Frun_hooks (1, &hook
);
1868 #ifdef HAVE_X_WINDOWS
1869 /* Transfer any clipboards we own to the clipboard manager. */
1870 x_clipboard_manager_save_all ();
1873 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1876 ns_release_autorelease_pool (ns_pool
);
1879 /* If we have an auto-save list file,
1880 kill it because we are exiting Emacs deliberately (not crashing).
1881 Do it after shut_down_emacs, which does an auto-save. */
1882 if (STRINGP (Vauto_save_list_file_name
))
1883 unlink (SSDATA (Vauto_save_list_file_name
));
1886 exit_code
= (XINT (arg
) < 0
1887 ? XINT (arg
) | INT_MIN
1888 : XINT (arg
) & INT_MAX
);
1890 exit_code
= EXIT_SUCCESS
;
1895 /* Perform an orderly shutdown of Emacs. Autosave any modified
1896 buffers, kill any child processes, clean up the terminal modes (if
1897 we're in the foreground), and other stuff like that. Don't perform
1898 any redisplay; this may be called when Emacs is shutting down in
1899 the background, or after its X connection has died.
1901 If SIG is a signal number, print a message for it.
1903 This is called by fatal signal handlers, X protocol error handlers,
1907 shut_down_emacs (int sig
, Lisp_Object stuff
)
1909 /* Prevent running of hooks from now on. */
1912 /* Don't update display from now on. */
1913 Vinhibit_redisplay
= Qt
;
1915 /* If we are controlling the terminal, reset terminal modes. */
1918 pid_t pgrp
= getpgrp ();
1919 pid_t tpgrp
= tcgetpgrp (0);
1920 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1922 reset_all_sys_modes ();
1923 if (sig
&& sig
!= SIGTERM
)
1925 static char const format
[] = "Fatal error %d: ";
1926 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1927 int buflen
= sprintf (buf
, format
, sig
);
1928 char const *sig_desc
= safe_strsignal (sig
);
1929 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1930 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1936 reset_all_sys_modes ();
1939 stuff_buffered_input (stuff
);
1941 inhibit_sentinels
= 1;
1942 kill_buffer_processes (Qnil
);
1943 Fdo_auto_save (Qt
, Qnil
);
1945 #ifdef CLASH_DETECTION
1946 unlock_all_files ();
1949 /* There is a tendency for a SIGIO signal to arrive within exit,
1950 and cause a SIGHUP because the input descriptor is already closed. */
1954 /* Do this only if terminating normally, we want glyph matrices
1955 etc. in a core dump. */
1956 if (sig
== 0 || sig
== SIGTERM
)
1958 check_glyph_memory ();
1959 check_message_stack ();
1967 ns_term_shutdown (sig
);
1971 xml_cleanup_parser ();
1985 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1986 doc
: /* Dump current state of Emacs into executable file FILENAME.
1987 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1988 This is used in the file `loadup.el' when building Emacs.
1990 You must run Emacs in batch mode in order to dump it. */)
1991 (Lisp_Object filename
, Lisp_Object symfile
)
1995 ptrdiff_t count
= SPECPDL_INDEX ();
1999 if (! noninteractive
)
2000 error ("Dumping Emacs works only in batch mode");
2004 /* Warn if the gap between BSS end and heap start is larger than this. */
2005 # define MAX_HEAP_BSS_DIFF (1024*1024)
2007 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2009 fprintf (stderr
, "**************************************************\n");
2010 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2011 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2013 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2014 fprintf (stderr
, "fail because of this. See the section about\n");
2015 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2016 fprintf (stderr
, "**************************************************\n");
2018 #endif /* GNU_LINUX */
2020 /* Bind `command-line-processed' to nil before dumping,
2021 so that the dumped Emacs will process its command line
2022 and set up to work with X windows if appropriate. */
2023 symbol
= intern ("command-line-processed");
2024 specbind (symbol
, Qnil
);
2026 CHECK_STRING (filename
);
2027 filename
= Fexpand_file_name (filename
, Qnil
);
2028 if (!NILP (symfile
))
2030 CHECK_STRING (symfile
);
2031 if (SCHARS (symfile
))
2032 symfile
= Fexpand_file_name (symfile
, Qnil
);
2036 Vpurify_flag
= Qnil
;
2039 set_time_zone_rule (dump_tz
);
2040 #ifndef LOCALTIME_CACHE
2041 /* Force a tz reload, since set_time_zone_rule doesn't. */
2047 /* Tell malloc where start of impure now is. */
2048 /* Also arrange for warnings when nearly out of space. */
2049 #ifndef SYSTEM_MALLOC
2051 /* On Windows, this was done before dumping, and that once suffices.
2052 Meanwhile, my_edata is not valid on Windows. */
2054 extern char my_edata
[];
2055 memory_warnings (my_edata
, malloc_warning
);
2057 #endif /* not WINDOWSNT */
2058 #endif /* not SYSTEM_MALLOC */
2059 #ifdef DOUG_LEA_MALLOC
2060 malloc_state_ptr
= malloc_get_state ();
2063 #ifdef USE_MMAP_FOR_BUFFERS
2066 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2067 #ifdef USE_MMAP_FOR_BUFFERS
2070 #ifdef DOUG_LEA_MALLOC
2071 free (malloc_state_ptr
);
2075 Vlibrary_cache
= Qnil
;
2077 #ifdef HAVE_WINDOW_SYSTEM
2078 reset_image_types ();
2083 return unbind_to (count
, Qnil
);
2086 #endif /* not CANNOT_DUMP */
2089 /* Recover from setlocale (LC_ALL, ""). */
2093 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2094 so that numbers are read and printed properly for Emacs Lisp. */
2095 setlocale (LC_NUMERIC
, "C");
2098 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2101 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2103 if (! EQ (*plocale
, desired_locale
))
2105 *plocale
= desired_locale
;
2106 setlocale (category
, (STRINGP (desired_locale
)
2107 ? SSDATA (desired_locale
)
2112 /* Set system time locale to match Vsystem_time_locale, if possible. */
2114 synchronize_system_time_locale (void)
2116 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2117 Vsystem_time_locale
);
2120 /* Set system messages locale to match Vsystem_messages_locale, if
2123 synchronize_system_messages_locale (void)
2126 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2127 Vsystem_messages_locale
);
2130 #endif /* HAVE_SETLOCALE */
2134 decode_env_path (const char *evarname
, const char *defalt
)
2136 const char *path
, *p
;
2137 Lisp_Object lpath
, element
, tem
;
2140 const char *emacs_dir
= egetenv ("emacs_dir");
2141 static const char *emacs_dir_env
= "%emacs_dir%/";
2142 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2145 /* It's okay to use getenv here, because this function is only used
2146 to initialize variables when Emacs starts up, and isn't called
2149 path
= getenv (evarname
);
2160 /* Ensure values from the environment use the proper directory separator. */
2163 char *path_copy
= alloca (strlen (path
) + 1);
2164 strcpy (path_copy
, path
);
2165 dostounix_filename (path_copy
);
2172 p
= strchr (path
, SEPCHAR
);
2174 p
= path
+ strlen (path
);
2175 element
= (p
- path
? make_string (path
, p
- path
)
2176 : build_string ("."));
2178 /* Relative file names in the default path are interpreted as
2179 being relative to $emacs_dir. */
2180 if (emacs_dir
&& defaulted
2181 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2182 element
= Fexpand_file_name (Fsubstring (element
,
2183 make_number (emacs_dir_len
),
2185 build_string (emacs_dir
));
2188 /* Add /: to the front of the name
2189 if it would otherwise be treated as magic. */
2190 tem
= Ffind_file_name_handler (element
, Qt
);
2192 /* However, if the handler says "I'm safe",
2193 don't bother adding /:. */
2197 prop
= Fget (tem
, intern ("safe-magic"));
2203 element
= concat2 (build_string ("/:"), element
);
2205 lpath
= Fcons (element
, lpath
);
2211 return Fnreverse (lpath
);
2214 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2215 doc
: /* Return non-nil if the current emacs process is a daemon.
2216 If the daemon was given a name argument, return that name. */)
2221 return build_string (daemon_name
);
2228 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2229 doc
: /* Mark the Emacs daemon as being initialized.
2230 This finishes the daemonization process by doing the other half of detaching
2231 from the parent process and its tty file descriptors. */)
2238 error ("This function can only be called if emacs is run as a daemon");
2240 if (daemon_pipe
[1] < 0)
2241 error ("The daemon has already been initialized");
2243 if (NILP (Vafter_init_time
))
2244 error ("This function can only be called after loading the init files");
2246 /* Get rid of stdin, stdout and stderr. */
2247 nfd
= open ("/dev/null", O_RDWR
);
2249 err
|= dup2 (nfd
, 0) < 0;
2250 err
|= dup2 (nfd
, 1) < 0;
2251 err
|= dup2 (nfd
, 2) < 0;
2252 err
|= close (nfd
) != 0;
2254 /* Closing the pipe will notify the parent that it can exit.
2255 FIXME: In case some other process inherited the pipe, closing it here
2256 won't notify the parent because it's still open elsewhere, so we
2257 additionally send a byte, just to make sure the parent really exits.
2258 Instead, we should probably close the pipe in start-process and
2259 call-process to make sure the pipe is never inherited by
2261 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2262 err
|= close (daemon_pipe
[1]) != 0;
2263 /* Set it to an invalid value so we know we've already run this function. */
2264 daemon_pipe
[1] = -1;
2267 error ("I/O error during daemon initialization");
2272 syms_of_emacs (void)
2274 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2275 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2276 DEFSYM (Qkill_emacs
, "kill-emacs");
2279 defsubr (&Sdump_emacs
);
2282 defsubr (&Skill_emacs
);
2284 defsubr (&Sinvocation_name
);
2285 defsubr (&Sinvocation_directory
);
2286 defsubr (&Sdaemonp
);
2287 defsubr (&Sdaemon_initialized
);
2289 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2290 doc
: /* Args passed by shell to Emacs, as a list of strings.
2291 Many arguments are deleted from the list as they are processed. */);
2293 DEFVAR_LISP ("system-type", Vsystem_type
,
2294 doc
: /* The value is a symbol indicating the type of operating system you are using.
2296 `gnu' compiled for a GNU Hurd system.
2297 `gnu/linux' compiled for a GNU/Linux system.
2298 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2299 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2300 `ms-dos' compiled as an MS-DOS application.
2301 `windows-nt' compiled as a native W32 application.
2302 `cygwin' compiled using the Cygwin library.
2303 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2304 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2305 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2306 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2308 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2309 doc
: /* Value is string indicating configuration Emacs was built for.
2310 On MS-Windows, the value reflects the OS flavor and version on which
2311 Emacs is running. */);
2312 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2314 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2315 doc
: /* String containing the configuration options Emacs was built with. */);
2316 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2318 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2319 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2321 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2322 doc
: /* Hook run when `kill-emacs' is called.
2323 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2324 in other similar situations), functions placed on this hook should not
2325 expect to be able to interact with the user. To ask for confirmation,
2326 see `kill-emacs-query-functions' instead.
2328 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2329 `noninteractive' was non-nil. */);
2330 Vkill_emacs_hook
= Qnil
;
2332 DEFVAR_LISP ("path-separator", Vpath_separator
,
2333 doc
: /* String containing the character that separates directories in
2334 search paths, such as PATH and other similar environment variables. */);
2337 Vpath_separator
= make_string (&c
, 1);
2340 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2341 doc
: /* The program name that was used to run Emacs.
2342 Any directory names are omitted. */);
2344 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2345 doc
: /* The directory in which the Emacs executable was found, to run it.
2346 The value is nil if that directory's name is not known. */);
2348 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2349 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2350 In an installed Emacs, this is normally nil. It is non-nil if
2351 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2352 within the variable `invocation-directory' or its parent. For example,
2353 this is the case when running an uninstalled Emacs executable from its
2354 build directory. */);
2355 Vinstallation_directory
= Qnil
;
2357 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2358 doc
: /* System locale for messages. */);
2359 Vsystem_messages_locale
= Qnil
;
2361 DEFVAR_LISP ("previous-system-messages-locale",
2362 Vprevious_system_messages_locale
,
2363 doc
: /* Most recently used system locale for messages. */);
2364 Vprevious_system_messages_locale
= Qnil
;
2366 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2367 doc
: /* System locale for time. */);
2368 Vsystem_time_locale
= Qnil
;
2370 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2371 doc
: /* Most recently used system locale for time. */);
2372 Vprevious_system_time_locale
= Qnil
;
2374 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2375 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2376 Vbefore_init_time
= Qnil
;
2378 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2379 doc
: /* Value of `current-time' after loading the init files.
2380 This is nil during initialization. */);
2381 Vafter_init_time
= Qnil
;
2383 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2384 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2385 inhibit_x_resources
= 0;
2387 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2388 doc
: /* Short copyright string for this version of Emacs. */);
2389 Vemacs_copyright
= build_string (emacs_copyright
);
2391 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2392 doc
: /* Version numbers of this version of Emacs. */);
2393 Vemacs_version
= build_string (emacs_version
);
2395 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2396 doc
: /* Alist of dynamic libraries vs external files implementing them.
2397 Each element is a list (LIBRARY FILE...), where the car is a symbol
2398 representing a supported external library, and the rest are strings giving
2399 alternate filenames for that library.
2401 Emacs tries to load the library from the files in the order they appear on
2402 the list; if none is loaded, the running session of Emacs won't have access
2405 Note that image types `pbm' and `xbm' do not need entries in this variable
2406 because they do not depend on external libraries and are always available.
2408 Also note that this is not a generic facility for accessing external
2409 libraries; only those already known by Emacs will be loaded. */);
2410 Vdynamic_library_alist
= Qnil
;
2411 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2414 Vlibrary_cache
= Qnil
;
2415 staticpro (&Vlibrary_cache
);
2418 /* Make sure IS_DAEMON starts up as false. */