1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 Free Software
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
30 #include <close-stream.h>
31 #include <ignore-value.h>
37 #include <sys/socket.h>
42 #if defined WINDOWSNT || defined HAVE_NTGUI
43 #include "w32select.h"
45 #include "w32common.h"
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>
100 static const char emacs_version
[] = VERSION
;
101 static const char emacs_copyright
[] = COPYRIGHT
;
103 /* Empty lisp strings. To avoid having to build any others. */
104 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
107 /* Cache for externally loaded libraries. */
108 Lisp_Object Vlibrary_cache
;
111 /* Set after Emacs has started up the first time.
112 Prevents reinitialization of the Lisp world and keymaps
113 on subsequent starts. */
117 extern void unexec_init_emacs_zone (void);
120 #ifdef DOUG_LEA_MALLOC
121 /* Preserves a pointer to the memory allocated that copies that
122 static data inside glibc's malloc. */
123 static void *malloc_state_ptr
;
124 /* From glibc, a routine that returns a copy of the malloc internal state. */
125 extern void *malloc_get_state (void);
126 /* From glibc, a routine that overwrites the malloc internal state. */
127 extern int malloc_set_state (void*);
128 /* True if the MALLOC_CHECK_ environment variable was set while
129 dumping. Used to work around a bug in glibc's malloc. */
130 static bool malloc_using_checking
;
131 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
132 extern void malloc_enable_thread (void);
135 Lisp_Object Qfile_name_handler_alist
;
137 Lisp_Object Qrisky_local_variable
;
139 Lisp_Object Qkill_emacs
;
140 static Lisp_Object Qkill_emacs_hook
;
142 /* If true, Emacs should not attempt to use a window-specific code,
143 but instead should use the virtual terminal under which it was started. */
144 bool inhibit_window_system
;
146 /* If true, a filter or a sentinel is running. Tested to save the match
147 data on the first attempt to change it inside asynchronous code. */
148 bool running_asynch_code
;
150 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
151 /* If true, -d was specified, meaning we're using some window system. */
155 /* An address near the bottom of the stack.
156 Tells GC how to save a copy of the stack. */
159 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
160 /* The address where the heap starts (from the first sbrk (0) call). */
161 static void *my_heap_start
;
165 /* The gap between BSS end and heap start as far as we can tell. */
166 static uprintmax_t heap_bss_diff
;
169 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
172 On Cocoa, CoreFoundation lib fails in forked process:
173 http://developer.apple.com/ReleaseNotes/
174 CoreFoundation/CoreFoundation.html)
176 On Windows, a Cygwin fork child cannot access the USER subsystem.
178 We mark being in the exec'd process by a daemon name argument of
179 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
180 NAME is the original daemon name, if any. */
181 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
182 # define DAEMON_MUST_EXEC
185 /* True means running Emacs without interactive terminal. */
188 /* True means remove site-lisp directories from load-path. */
191 /* Name for the server started by the daemon.*/
192 static char *daemon_name
;
194 /* Pipe used to send exit notification to the daemon parent at
198 /* Save argv and argc. */
202 static void sort_args (int argc
, char **argv
);
203 static void syms_of_emacs (void);
205 /* MSVC needs each string be shorter than 2048 bytes, so the usage
206 strings below are split to not overflow this limit. */
208 Usage: %s [OPTION-OR-FILENAME]...\n\
210 Run Emacs, the extensible, customizable, self-documenting real-time\n\
211 display editor. The recommended way to start Emacs for normal editing\n\
212 is with no options at all.\n\
214 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
215 read the main documentation for these command-line arguments.\n\
217 Initialization options:\n\
219 --batch do not do interactive display; implies -q\n\
220 --chdir DIR change to directory DIR\n\
221 --daemon start a server in the background\n\
222 --debug-init enable Emacs Lisp debugger for init file\n\
223 --display, -d DISPLAY use X server DISPLAY\n\
224 --no-desktop do not load a saved desktop\n\
225 --no-init-file, -q load neither ~/.emacs nor default.el\n\
226 --no-shared-memory, -nl do not use shared memory\n\
227 --no-site-file do not load site-start.el\n\
228 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
229 --no-splash do not display a splash screen on startup\n\
230 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
231 --quick, -Q equivalent to:\n\
232 -q --no-site-file --no-site-lisp --no-splash\n\
233 --script FILE run FILE as an Emacs Lisp script\n\
234 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
235 --user, -u USER load ~USER/.emacs instead of your own\n\
241 FILE visit FILE using find-file\n\
242 +LINE go to line LINE in next FILE\n\
243 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
244 --directory, -L DIR add DIR to variable load-path\n\
245 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
246 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
247 --file FILE visit FILE using find-file\n\
248 --find-file FILE visit FILE using find-file\n\
249 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
250 --insert FILE insert contents of FILE into current buffer\n\
251 --kill exit without asking for confirmation\n\
252 --load, -l FILE load Emacs Lisp FILE using the load function\n\
253 --visit FILE visit FILE using find-file\n\
259 --background-color, -bg COLOR window background color\n\
260 --basic-display, -D disable many display features;\n\
261 used for debugging Emacs\n\
262 --border-color, -bd COLOR main border color\n\
263 --border-width, -bw WIDTH width of main border\n\
264 --color, --color=MODE override color mode for character terminals;\n\
265 MODE defaults to `auto', and\n\
266 can also be `never', `always',\n\
267 or a mode name like `ansi8'\n\
268 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
269 --font, -fn FONT default font; must be fixed-width\n\
270 --foreground-color, -fg COLOR window foreground color\n\
271 --fullheight, -fh make the first frame high as the screen\n\
272 --fullscreen, -fs make the first frame fullscreen\n\
273 --fullwidth, -fw make the first frame wide as the screen\n\
274 --maximized, -mm make the first frame maximized\n\
275 --geometry, -g GEOMETRY window geometry\n\
276 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
277 --iconic start Emacs in iconified state\n\
278 --internal-border, -ib WIDTH width between text and main border\n\
279 --line-spacing, -lsp PIXELS additional space to put between lines\n\
280 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
281 --name NAME title for initial Emacs frame\n\
282 --no-blinking-cursor, -nbc disable blinking cursor\n\
283 --reverse-video, -r, -rv switch foreground and background\n\
284 --title, -T TITLE title for initial Emacs frame\n\
285 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
286 --xrm XRESOURCES set additional X resources\n\
287 --parent-id XID set parent window\n\
288 --help display this help and exit\n\
289 --version output version information and exit\n\
293 You can generally also specify long option names with a single -; for\n\
294 example, -batch as well as --batch. You can use any unambiguous\n\
295 abbreviation for a --option.\n\
297 Various environment variables and window system resources also affect\n\
298 Emacs' operation. See the main documentation.\n\
300 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
301 section of the Emacs manual or the file BUGS.\n"
304 /* True if handling a fatal error already. */
305 bool fatal_error_in_progress
;
308 /* NS autrelease pool, for memory management. */
309 static void *ns_pool
;
314 setlocale (int cat
, char const *locale
)
321 /* Report a fatal error due to signal SIG, output a backtrace of at
322 most BACKTRACE_LIMIT lines, and exit. */
324 terminate_due_to_signal (int sig
, int backtrace_limit
)
326 signal (sig
, SIG_DFL
);
327 totally_unblock_input ();
329 /* If fatal error occurs in code below, avoid infinite recursion. */
330 if (! fatal_error_in_progress
)
332 fatal_error_in_progress
= 1;
334 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
335 Fkill_emacs (make_number (sig
));
337 shut_down_emacs (sig
, Qnil
);
338 emacs_backtrace (backtrace_limit
);
341 /* Signal the same code; this time it will really be fatal.
342 Since we're in a signal handler, the signal is blocked, so we
343 have to unblock it if we want to really receive it. */
347 sigemptyset (&unblocked
);
348 sigaddset (&unblocked
, sig
);
349 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
355 /* This shouldn't be executed, but it prevents a warning. */
359 /* Code for dealing with Lisp access to the Unix command line. */
362 init_cmdargs (int argc
, char **argv
, int skip_args
)
365 Lisp_Object name
, dir
, handler
;
366 ptrdiff_t count
= SPECPDL_INDEX ();
367 Lisp_Object raw_name
;
372 raw_name
= build_string (argv
[0]);
374 /* Add /: to the front of the name
375 if it would otherwise be treated as magic. */
376 handler
= Ffind_file_name_handler (raw_name
, Qt
);
377 if (! NILP (handler
))
378 raw_name
= concat2 (build_string ("/:"), raw_name
);
380 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
381 Vinvocation_directory
= Ffile_name_directory (raw_name
);
383 /* If we got no directory in argv[0], search PATH to find where
384 Emacs actually came from. */
385 if (NILP (Vinvocation_directory
))
388 int yes
= openp (Vexec_path
, Vinvocation_name
,
389 Vexec_suffixes
, &found
, make_number (X_OK
));
392 /* Add /: to the front of the name
393 if it would otherwise be treated as magic. */
394 handler
= Ffind_file_name_handler (found
, Qt
);
395 if (! NILP (handler
))
396 found
= concat2 (build_string ("/:"), found
);
397 Vinvocation_directory
= Ffile_name_directory (found
);
401 if (!NILP (Vinvocation_directory
)
402 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
403 /* Emacs was started with relative path, like ./emacs.
405 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
407 Vinstallation_directory
= Qnil
;
409 if (!NILP (Vinvocation_directory
))
411 dir
= Vinvocation_directory
;
413 /* If we are running from the build directory, set DIR to the
414 src subdirectory of the Emacs tree, like on Posix
416 if (SBYTES (dir
) > sizeof ("/i386/") - 1
417 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
419 dir
= Fexpand_file_name (build_string ("../.."), dir
);
420 #else /* !WINDOWSNT */
422 name
= Fexpand_file_name (Vinvocation_name
, dir
);
425 Lisp_Object tem
, lib_src_exists
;
426 Lisp_Object etc_exists
, info_exists
;
428 /* See if dir contains subdirs for use by Emacs.
429 Check for the ones that would exist in a build directory,
430 not including lisp and info. */
431 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
432 lib_src_exists
= Ffile_exists_p (tem
);
435 /* MSDOS installations frequently remove lib-src, but we still
436 must set installation-directory, or else info won't find
437 its files (it uses the value of installation-directory). */
438 tem
= Fexpand_file_name (build_string ("info"), dir
);
439 info_exists
= Ffile_exists_p (tem
);
444 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
446 tem
= Fexpand_file_name (build_string ("etc"), dir
);
447 etc_exists
= Ffile_exists_p (tem
);
448 if (!NILP (etc_exists
))
450 Vinstallation_directory
451 = Ffile_name_as_directory (dir
);
456 /* See if dir's parent contains those subdirs. */
457 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
458 lib_src_exists
= Ffile_exists_p (tem
);
462 /* See the MSDOS commentary above. */
463 tem
= Fexpand_file_name (build_string ("../info"), dir
);
464 info_exists
= Ffile_exists_p (tem
);
469 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
471 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
472 etc_exists
= Ffile_exists_p (tem
);
473 if (!NILP (etc_exists
))
475 tem
= Fexpand_file_name (build_string (".."), dir
);
476 Vinstallation_directory
477 = Ffile_name_as_directory (tem
);
482 /* If the Emacs executable is actually a link,
483 next try the dir that the link points into. */
484 tem
= Ffile_symlink_p (name
);
487 name
= Fexpand_file_name (tem
, dir
);
488 dir
= Ffile_name_directory (name
);
495 Vcommand_line_args
= Qnil
;
497 for (i
= argc
- 1; i
>= 0; i
--)
499 if (i
== 0 || i
> skip_args
)
500 /* For the moment, we keep arguments as is in unibyte strings.
501 They are decoded in the function command-line after we know
502 locale-coding-system. */
504 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
508 unbind_to (count
, Qnil
);
511 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
512 doc
: /* Return the program name that was used to run Emacs.
513 Any directory names are omitted. */)
516 return Fcopy_sequence (Vinvocation_name
);
519 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
521 doc
: /* Return the directory name in which the Emacs executable was located. */)
524 return Fcopy_sequence (Vinvocation_directory
);
529 /* A valid but unlikely value for the TZ environment value.
530 It is OK (though a bit slower) if the user actually chooses this value. */
531 static char const dump_tz
[] = "UtC0";
534 /* Test whether the next argument in ARGV matches SSTR or a prefix of
535 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
536 (the argument is supposed to have a value) store in *VALPTR either
537 the next argument or the portion of this one after the equal sign.
538 ARGV is read starting at position *SKIPPTR; this index is advanced
539 by the number of arguments used.
541 Too bad we can't just use getopt for all of this, but we don't have
542 enough information to do it right. */
545 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
546 int minlen
, char **valptr
, int *skipptr
)
552 /* Don't access argv[argc]; give up in advance. */
553 if (argc
<= *skipptr
+ 1)
556 arg
= argv
[*skipptr
+1];
559 if (strcmp (arg
, sstr
) == 0)
563 *valptr
= argv
[*skipptr
+2];
570 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
571 ? p
- arg
: strlen (arg
));
572 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
574 else if (valptr
== NULL
)
585 else if (argv
[*skipptr
+2] != NULL
)
587 *valptr
= argv
[*skipptr
+2];
597 #ifdef DOUG_LEA_MALLOC
599 /* malloc can be invoked even before main (e.g. by the dynamic
600 linker), so the dumped malloc state must be restored as early as
601 possible using this special hook. */
604 malloc_initialize_hook (void)
608 if (!malloc_using_checking
)
609 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
610 ignored if the heap to be restored was constructed without
611 malloc checking. Can't use unsetenv, since that calls malloc. */
615 for (p
= environ
; p
&& *p
; p
++)
616 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
625 malloc_set_state (malloc_state_ptr
);
626 #ifndef XMALLOC_OVERRUN_CHECK
627 free (malloc_state_ptr
);
632 if (my_heap_start
== 0)
633 my_heap_start
= sbrk (0);
634 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
638 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
640 #endif /* DOUG_LEA_MALLOC */
642 /* Close standard output and standard error, reporting any write
643 errors as best we can. This is intended for use with atexit. */
645 close_output_streams (void)
647 if (close_stream (stdout
) != 0)
649 fprintf (stderr
, "Write error to standard output: %s\n",
652 _exit (EXIT_FAILURE
);
655 if (close_stream (stderr
) != 0)
656 _exit (EXIT_FAILURE
);
661 main (int argc
, char **argv
)
666 char stack_bottom_variable
;
667 bool do_initial_setlocale
;
670 #ifdef HAVE_SETRLIMIT
676 #ifdef DAEMON_MUST_EXEC
685 #ifdef G_SLICE_ALWAYS_MALLOC
686 /* This is used by the Cygwin build. */
687 xputenv ("G_SLICE=always-malloc");
693 extern char my_endbss
[];
694 extern char *my_endbss_static
;
696 if (my_heap_start
== 0)
697 my_heap_start
= sbrk (0);
699 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
703 #if defined WINDOWSNT || defined HAVE_NTGUI
704 /* Set global variables used to detect Windows version. Do this as
705 early as possible. (unexw32.c calls this function as well, but
706 the additional call here is harmless.) */
707 cache_system_info ();
710 #ifdef RUN_TIME_REMAP
712 run_time_remap (argv
[0]);
715 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
718 unexec_init_emacs_zone ();
721 atexit (close_output_streams
);
723 sort_args (argc
, argv
);
725 while (argv
[argc
]) argc
++;
727 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
729 const char *version
, *copyright
;
732 Lisp_Object tem
, tem2
;
733 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
734 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
737 fprintf (stderr
, "Invalid value of `emacs-version'\n");
742 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
747 version
= SSDATA (tem
);
748 copyright
= SSDATA (tem2
);
753 version
= emacs_version
;
754 copyright
= emacs_copyright
;
756 printf ("GNU Emacs %s\n", version
);
757 printf ("%s\n", copyright
);
758 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
759 printf ("You may redistribute copies of Emacs\n");
760 printf ("under the terms of the GNU General Public License.\n");
761 printf ("For more information about these matters, ");
762 printf ("see the file named COPYING.\n");
766 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
767 if (chdir (ch_to_dir
) == -1)
769 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
770 argv
[0], ch_to_dir
, strerror (errno
));
774 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
775 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
777 #ifdef HAVE_PERSONALITY_LINUX32
778 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
780 /* Set this so we only do this once. */
781 xputenv ("EMACS_HEAP_EXEC=true");
783 /* A flag to turn off address randomization which is introduced
784 in linux kernel shipped with fedora core 4 */
785 #define ADD_NO_RANDOMIZE 0x0040000
786 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
787 #undef ADD_NO_RANDOMIZE
789 execvp (argv
[0], argv
);
791 /* If the exec fails, try to dump anyway. */
794 #endif /* HAVE_PERSONALITY_LINUX32 */
796 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
797 /* Extend the stack space available.
798 Don't do that if dumping, since some systems (e.g. DJGPP)
799 might define a smaller stack limit at that time. */
802 && (!noninteractive
|| initialized
)
804 && !getrlimit (RLIMIT_STACK
, &rlim
))
807 extern size_t re_max_failures
;
808 /* Approximate the amount regex.c needs per unit of re_max_failures. */
809 int ratio
= 20 * sizeof (char *);
810 /* Then add 33% to cover the size of the smaller stacks that regex.c
811 successively allocates and discards, on its way to the maximum. */
813 /* Add in some extra to cover
814 what we're likely to use for other reasons. */
815 newlim
= re_max_failures
* ratio
+ 200000;
817 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
818 stack allocation routine for new process that the allocation
819 fails if stack limit is not on page boundary. So, round up the
820 new limit to page boundary. */
821 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
823 if (newlim
> rlim
.rlim_max
)
825 newlim
= rlim
.rlim_max
;
826 /* Don't let regex.c overflow the stack we have. */
827 re_max_failures
= (newlim
- 200000) / ratio
;
829 if (rlim
.rlim_cur
< newlim
)
830 rlim
.rlim_cur
= newlim
;
832 setrlimit (RLIMIT_STACK
, &rlim
);
834 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
836 /* Record (approximately) where the stack begins. */
837 stack_bottom
= &stack_bottom_variable
;
841 #ifndef SYSTEM_MALLOC
842 /* Arrange to get warning messages as memory fills up. */
843 memory_warnings (0, malloc_warning
);
845 /* Call malloc at least once, to run malloc_initialize_hook.
846 Also call realloc and free for consistency. */
847 free (realloc (malloc (4), 4));
849 #endif /* not SYSTEM_MALLOC */
851 #if defined (MSDOS) || defined (WINDOWSNT)
852 /* We do all file input/output as binary files. When we need to translate
853 newlines, we do that manually. */
855 #endif /* MSDOS || WINDOWSNT */
858 if (!isatty (fileno (stdin
)))
859 setmode (fileno (stdin
), O_BINARY
);
860 if (!isatty (fileno (stdout
)))
863 setmode (fileno (stdout
), O_BINARY
);
867 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
868 The build procedure uses this while dumping, to ensure that the
869 dumped Emacs does not have its system locale tables initialized,
870 as that might cause screwups when the dumped Emacs starts up. */
872 char *lc_all
= getenv ("LC_ALL");
873 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
876 /* Set locale now, so that initial error messages are localized properly.
877 fixup_locale must wait until later, since it builds strings. */
878 if (do_initial_setlocale
)
879 setlocale (LC_ALL
, "");
881 inhibit_window_system
= 0;
883 /* Handle the -t switch, which specifies filename to use as terminal. */
887 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
892 result
= emacs_open (term
, O_RDWR
, 0);
893 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
895 char *errstring
= strerror (errno
);
896 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
901 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
904 fprintf (stderr
, "Using %s\n", term
);
905 #ifdef HAVE_WINDOW_SYSTEM
906 inhibit_window_system
= 1; /* -t => -nw */
913 /* Command line option --no-windows is deprecated and thus not mentioned
914 in the manual and usage information. */
915 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
916 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
917 inhibit_window_system
= 1;
919 /* Handle the -batch switch, which means don't do interactive display. */
921 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
924 Vundo_outer_limit
= Qnil
;
926 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
928 noninteractive
= 1; /* Set batch mode. */
929 /* Convert --script to -scriptload, un-skip it, and sort again
930 so that it will be handled in proper sequence. */
931 /* FIXME broken for --script=FILE - is that supposed to work? */
932 argv
[skip_args
- 1] = (char *) "-scriptload";
934 sort_args (argc
, argv
);
937 /* Handle the --help option, which gives a usage message. */
938 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
940 printf (USAGE1
, argv
[0], USAGE2
);
946 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
947 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
952 /* Start as a daemon: fork a new child process which will run the
953 rest of the initialization code, then exit.
955 Detaching a daemon requires the following steps:
959 - close the tty file-descriptors
961 We only want to do the last 2 steps once the daemon is ready to
962 serve requests, i.e. after loading .emacs (initialization).
963 OTOH initialization may start subprocesses (e.g. ispell) and these
964 should be run from the proper process (the one that will end up
965 running as daemon) and with the proper "session id" in order for
966 them to keep working after detaching, so fork and setsid need to be
967 performed before initialization.
969 We want to avoid exiting before the server socket is ready, so
970 use a pipe for synchronization. The parent waits for the child
971 to close its end of the pipe (using `daemon-initialized')
973 if (pipe2 (daemon_pipe
, O_CLOEXEC
) != 0)
975 fprintf (stderr
, "Cannot pipe!\n");
979 #ifndef DAEMON_MUST_EXEC
981 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
982 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
983 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
986 #else /* DAEMON_MUST_EXEC */
987 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
988 f
= fork (); /* in orig */
990 f
= 0; /* in exec'd */
991 #endif /* !DAEMON_MUST_EXEC */
997 /* Close unused writing end of the pipe. */
998 close (daemon_pipe
[1]);
1000 /* Just wait for the child to close its end of the pipe. */
1003 retval
= read (daemon_pipe
[0], &buf
, 1);
1005 while (retval
== -1 && errno
== EINTR
);
1009 fprintf (stderr
, "Error reading status from child\n");
1012 else if (retval
== 0)
1014 fprintf (stderr
, "Error: server did not start correctly\n");
1018 close (daemon_pipe
[0]);
1023 fprintf (stderr
, "Cannot fork!\n");
1027 #ifdef DAEMON_MUST_EXEC
1029 /* In orig process, forked as child, OR in exec'd. */
1030 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1031 { /* In orig, child: now exec w/special daemon name. */
1034 snprintf (fdStr
, sizeof fdStr
,
1035 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1036 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1038 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1040 fprintf (stderr
, "daemon: child name too long\n");
1044 argv
[skip_args
] = fdStr
;
1046 execvp (argv
[0], argv
);
1047 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1051 /* In exec'd: parse special dname into pipe and name info. */
1052 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1053 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1055 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1058 dname_arg2
[0] = '\0';
1059 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1061 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1063 #endif /* DAEMON_MUST_EXEC */
1066 daemon_name
= xstrdup (dname_arg
);
1067 /* Close unused reading end of the pipe. */
1068 close (daemon_pipe
[0]);
1072 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1077 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1078 # ifndef CANNOT_DUMP
1079 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1080 that causes an infinite recursive loop with FreeBSD. But do make
1081 it thread-safe when creating emacs, otherwise bootstrap-emacs
1082 fails on Cygwin. See Bug#14569. */
1083 if (!noninteractive
|| initialized
)
1085 malloc_enable_thread ();
1088 init_signals (dumping
);
1090 noninteractive1
= noninteractive
;
1092 /* Perform basic initializations (not merely interning symbols). */
1099 init_charset_once ();
1100 init_coding_once ();
1101 init_syntax_once (); /* Create standard syntax table. */
1102 init_category_once (); /* Create standard category table. */
1103 init_casetab_once (); /* Must be done before init_buffer_once. */
1104 init_buffer_once (); /* Create buffer table and some buffers. */
1105 init_minibuf_once (); /* Create list of minibuffers. */
1106 /* Must precede init_window_once. */
1108 /* Call syms_of_xfaces before init_window_once because that
1109 function creates Vterminal_frame. Termcap frames now use
1110 faces, and the face implementation uses some symbols as
1113 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1114 be better to arrange things not to have this dependency. */
1116 /* Call syms_of_keyboard before init_window_once because
1117 keyboard sets up symbols that include some face names that
1118 the X support will want to use. This can happen when
1119 CANNOT_DUMP is defined. */
1120 syms_of_keyboard ();
1122 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1124 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1126 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1128 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1130 /* Before syms_of_coding because it initializes Qcharsetp. */
1132 /* Before init_window_once, because it sets up the
1133 Vcoding_system_hash_table. */
1134 syms_of_coding (); /* This should be after syms_of_fileio. */
1136 init_window_once (); /* Init the window system. */
1137 #ifdef HAVE_WINDOW_SYSTEM
1138 init_fringe_once (); /* Swap bitmaps if necessary. */
1139 #endif /* HAVE_WINDOW_SYSTEM */
1144 if (do_initial_setlocale
)
1147 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1148 Vsystem_time_locale
= Vprevious_system_time_locale
;
1153 running_asynch_code
= 0;
1157 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1160 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1163 ns_pool
= ns_alloc_autorelease_pool ();
1164 if (!noninteractive
)
1166 #ifdef NS_IMPL_COCOA
1167 if (skip_args
< argc
)
1169 /* FIXME: Do the right thing if getenv returns NULL, or if
1171 if (!strncmp (argv
[skip_args
], "-psn", 4))
1174 chdir (getenv ("HOME"));
1176 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1179 chdir (getenv ("HOME"));
1184 #endif /* HAVE_NS */
1186 #ifdef HAVE_X_WINDOWS
1187 /* Stupid kludge to catch command-line display spec. We can't
1188 handle this argument entirely in window system dependent code
1189 because we don't even know which window system dependent code
1190 to run until we've recognized this argument. */
1192 char *displayname
= 0;
1193 int count_before
= skip_args
;
1195 /* Skip any number of -d options, but only use the last one. */
1198 int count_before_this
= skip_args
;
1200 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1202 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1207 count_before
= count_before_this
;
1210 /* If we have the form --display=NAME,
1211 convert it into -d name.
1212 This requires inserting a new element into argv. */
1213 if (displayname
&& count_before
< skip_args
)
1215 if (skip_args
== count_before
+ 1)
1217 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1218 (argc
- (count_before
+ 2)) * sizeof *argv
);
1219 argv
[count_before
+ 2] = displayname
;
1222 argv
[count_before
+ 1] = (char *) "-d";
1227 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1228 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1232 /* Don't actually discard this arg. */
1233 skip_args
= count_before
;
1235 #else /* !HAVE_X_WINDOWS */
1238 int count_before
= skip_args
;
1240 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1241 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1244 skip_args
= count_before
;
1248 /* argmatch must not be used after here,
1249 except when building temacs
1250 because the -d argument has not been skipped in skip_args. */
1253 /* Call early 'cause init_environment needs it. */
1255 /* Set defaults for several environment variables. */
1257 init_environment (argc
, argv
, skip_args
);
1262 #ifdef HAVE_GFILENOTIFY
1263 globals_of_gfilenotify ();
1268 #ifdef HAVE_W32NOTIFY
1269 globals_of_w32notify ();
1271 /* Initialize environment from registry settings. */
1272 init_environment (argv
);
1273 init_ntproc (dumping
); /* must precede init_editfns. */
1276 /* Initialize and GC-protect Vinitial_environment and
1277 Vprocess_environment before set_initial_environment fills them
1280 syms_of_callproc ();
1281 /* egetenv is a pretty low-level facility, which may get called in
1282 many circumstances; it seems flimsy to put off initializing it
1283 until calling init_callproc. Do not do it when dumping. */
1285 set_initial_environment ();
1287 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1288 if this is not done. Do it after set_global_environment so that we
1289 don't pollute Vglobal_environment. */
1290 /* Setting LANG here will defeat the startup locale processing... */
1295 init_buffer (); /* Init default directory of main buffer. */
1297 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1298 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1302 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1303 Lisp_Object old_log_max
;
1304 old_log_max
= Vmessage_log_max
;
1305 XSETFASTINT (Vmessage_log_max
, 0);
1306 message_dolog ("", 0, 1, 0);
1307 Vmessage_log_max
= old_log_max
;
1310 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1314 /* Check to see if Emacs has been installed correctly. */
1315 check_windows_init_file ();
1318 /* Intern the names of all standard functions and variables;
1319 define standard keys. */
1323 /* The basic levels of Lisp must come first. Note that
1324 syms_of_data and some others have already been called. */
1329 syms_of_floatfns ();
1332 syms_of_bytecode ();
1334 syms_of_casefiddle ();
1336 syms_of_category ();
1338 syms_of_character ();
1345 syms_of_filelock ();
1348 /* syms_of_keymap (); */
1356 syms_of_terminal ();
1362 syms_of_textprop ();
1363 syms_of_composite ();
1366 #endif /* WINDOWSNT */
1373 #ifdef HAVE_WINDOW_SYSTEM
1376 #endif /* HAVE_WINDOW_SYSTEM */
1377 #ifdef HAVE_X_WINDOWS
1382 syms_of_xsettings ();
1389 #endif /* HAVE_X_WINDOWS */
1402 #endif /* HAVE_NTGUI */
1404 #if defined WINDOWSNT || defined HAVE_NTGUI
1405 syms_of_w32select ();
1412 syms_of_win16select ();
1419 syms_of_nsselect ();
1421 #endif /* HAVE_NS */
1427 #ifdef HAVE_GFILENOTIFY
1428 syms_of_gfilenotify ();
1429 #endif /* HAVE_GFILENOTIFY */
1433 #endif /* HAVE_INOTIFY */
1436 syms_of_dbusbind ();
1437 #endif /* HAVE_DBUS */
1441 #ifdef HAVE_W32NOTIFY
1442 syms_of_w32notify ();
1443 #endif /* HAVE_W32NOTIFY */
1444 #endif /* WINDOWSNT */
1446 syms_of_profiler ();
1448 keys_of_casefiddle ();
1451 keys_of_keyboard ();
1457 /* Initialization that must be done even if the global variable
1458 initialized is non zero. */
1460 globals_of_w32font ();
1461 globals_of_w32fns ();
1462 globals_of_w32menu ();
1463 #endif /* HAVE_NTGUI */
1465 #if defined WINDOWSNT || defined HAVE_NTGUI
1466 globals_of_w32select ();
1472 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1473 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1474 init_keyboard (); /* This too must precede init_sys_modes. */
1475 if (!noninteractive
)
1476 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1478 #ifdef HAVE_WINDOW_SYSTEM
1480 #endif /* HAVE_WINDOW_SYSTEM */
1488 /* Handle -l loadup, args passed by Makefile. */
1489 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1490 Vtop_level
= Fcons (intern_c_string ("load"),
1491 Fcons (build_string (file
), Qnil
));
1492 /* Unless next switch is -nl, load "loadup.el" first thing. */
1494 Vtop_level
= Fcons (intern_c_string ("load"),
1495 Fcons (build_string ("loadup.el"), Qnil
));
1502 /* If the execution TZ happens to be the same as the dump TZ,
1503 change it to some other value and then change it back,
1504 to force the underlying implementation to reload the TZ info.
1505 This is needed on implementations that load TZ info from files,
1506 since the TZ file contents may differ between dump and execution. */
1507 char *tz
= getenv ("TZ");
1508 if (tz
&& !strcmp (tz
, dump_tz
))
1518 /* Set up for profiling. This is known to work on FreeBSD,
1519 GNU/Linux and MinGW. It might work on some other systems too.
1520 Give it a try and tell us if it works on your system. To compile
1521 for profiling, use the configure option --enable-profiling. */
1522 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1527 extern unsigned char etext
asm ("etext");
1533 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1542 #ifdef LOCALTIME_CACHE
1543 /* Some versions of localtime have a bug. They cache the value of the time
1544 zone rather than looking it up every time. Since localtime() is
1545 called to bolt the undumping time into the undumped emacs, this
1546 results in localtime ignoring the TZ environment variable.
1547 This flushes the new TZ value into localtime. */
1549 #endif /* defined (LOCALTIME_CACHE) */
1551 /* Enter editor command loop. This never returns. */
1557 /* Sort the args so we can find the most important ones
1558 at the beginning of argv. */
1560 /* First, here's a table of all the standard options. */
1562 struct standard_args
1565 const char *longname
;
1570 static const struct standard_args standard_args
[] =
1572 { "-version", "--version", 150, 0 },
1573 { "-chdir", "--chdir", 130, 1 },
1574 { "-t", "--terminal", 120, 1 },
1575 { "-nw", "--no-window-system", 110, 0 },
1576 { "-nw", "--no-windows", 110, 0 },
1577 { "-batch", "--batch", 100, 0 },
1578 { "-script", "--script", 100, 1 },
1579 { "-daemon", "--daemon", 99, 0 },
1580 { "-help", "--help", 90, 0 },
1581 { "-nl", "--no-loadup", 70, 0 },
1582 { "-nsl", "--no-site-lisp", 65, 0 },
1583 /* -d must come last before the options handled in startup.el. */
1584 { "-d", "--display", 60, 1 },
1585 { "-display", 0, 60, 1 },
1586 /* Now for the options handled in `command-line' (startup.el). */
1587 /* (Note that to imply -nsl, -Q is partially handled here.) */
1588 { "-Q", "--quick", 55, 0 },
1589 { "-quick", 0, 55, 0 },
1590 { "-q", "--no-init-file", 50, 0 },
1591 { "-no-init-file", 0, 50, 0 },
1592 { "-no-site-file", "--no-site-file", 40, 0 },
1593 { "-u", "--user", 30, 1 },
1594 { "-user", 0, 30, 1 },
1595 { "-debug-init", "--debug-init", 20, 0 },
1596 { "-iconic", "--iconic", 15, 0 },
1597 { "-D", "--basic-display", 12, 0},
1598 { "-basic-display", 0, 12, 0},
1599 { "-nbc", "--no-blinking-cursor", 12, 0 },
1600 /* Now for the options handled in `command-line-1' (startup.el). */
1601 { "-nbi", "--no-bitmap-icon", 10, 0 },
1602 { "-bg", "--background-color", 10, 1 },
1603 { "-background", 0, 10, 1 },
1604 { "-fg", "--foreground-color", 10, 1 },
1605 { "-foreground", 0, 10, 1 },
1606 { "-bd", "--border-color", 10, 1 },
1607 { "-bw", "--border-width", 10, 1 },
1608 { "-ib", "--internal-border", 10, 1 },
1609 { "-ms", "--mouse-color", 10, 1 },
1610 { "-cr", "--cursor-color", 10, 1 },
1611 { "-fn", "--font", 10, 1 },
1612 { "-font", 0, 10, 1 },
1613 { "-fs", "--fullscreen", 10, 0 },
1614 { "-fw", "--fullwidth", 10, 0 },
1615 { "-fh", "--fullheight", 10, 0 },
1616 { "-mm", "--maximized", 10, 0 },
1617 { "-g", "--geometry", 10, 1 },
1618 { "-geometry", 0, 10, 1 },
1619 { "-T", "--title", 10, 1 },
1620 { "-title", 0, 10, 1 },
1621 { "-name", "--name", 10, 1 },
1622 { "-xrm", "--xrm", 10, 1 },
1623 { "-parent-id", "--parent-id", 10, 1 },
1624 { "-r", "--reverse-video", 5, 0 },
1626 { "-reverse", 0, 5, 0 },
1627 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1628 { "-vb", "--vertical-scroll-bars", 5, 0 },
1629 { "-color", "--color", 5, 0},
1630 { "-no-splash", "--no-splash", 3, 0 },
1631 { "-no-desktop", "--no-desktop", 3, 0 },
1633 { "-NSAutoLaunch", 0, 5, 1 },
1634 { "-NXAutoLaunch", 0, 5, 1 },
1635 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1636 { "-_NSMachLaunch", 0, 85, 1 },
1637 { "-MachLaunch", 0, 85, 1 },
1638 { "-macosx", 0, 85, 0 },
1639 { "-NSHost", 0, 85, 1 },
1641 /* These have the same priority as ordinary file name args,
1642 so they are not reordered with respect to those. */
1643 { "-L", "--directory", 0, 1 },
1644 { "-directory", 0, 0, 1 },
1645 { "-l", "--load", 0, 1 },
1646 { "-load", 0, 0, 1 },
1647 /* This has no longname, because using --scriptload confuses sort_args,
1648 because then the --script long option seems to match twice; ie
1649 you can't have a long option which is a prefix of another long
1650 option. In any case, this is entirely an internal option. */
1651 { "-scriptload", NULL
, 0, 1 },
1652 { "-f", "--funcall", 0, 1 },
1653 { "-funcall", 0, 0, 1 },
1654 { "-eval", "--eval", 0, 1 },
1655 { "-execute", "--execute", 0, 1 },
1656 { "-find-file", "--find-file", 0, 1 },
1657 { "-visit", "--visit", 0, 1 },
1658 { "-file", "--file", 0, 1 },
1659 { "-insert", "--insert", 0, 1 },
1661 { "-NXOpen", 0, 0, 1 },
1662 { "-NXOpenTemp", 0, 0, 1 },
1663 { "-NSOpen", 0, 0, 1 },
1664 { "-NSOpenTemp", 0, 0, 1 },
1665 { "-GSFilePath", 0, 0, 1 },
1667 /* This should be processed after ordinary file name args and the like. */
1668 { "-kill", "--kill", -10, 0 },
1671 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1672 so that the highest priority ones come first.
1673 Do not change the order of elements of equal priority.
1674 If an option takes an argument, keep it and its argument together.
1676 If an option that takes no argument appears more
1677 than once, eliminate all but one copy of it. */
1680 sort_args (int argc
, char **argv
)
1682 char **new = xmalloc (argc
* sizeof *new);
1683 /* For each element of argv,
1684 the corresponding element of options is:
1685 0 for an option that takes no arguments,
1686 1 for an option that takes one argument, etc.
1687 -1 for an ordinary non-option argument. */
1688 int *options
= xnmalloc (argc
, sizeof *options
);
1689 int *priority
= xnmalloc (argc
, sizeof *priority
);
1691 int incoming_used
= 1;
1695 /* Categorize all the options,
1696 and figure out which argv elts are option arguments. */
1697 for (from
= 1; from
< argc
; from
++)
1701 if (argv
[from
][0] == '-')
1705 /* If we have found "--", don't consider
1706 any more arguments as options. */
1707 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1709 /* Leave the "--", and everything following it, at the end. */
1710 for (; from
< argc
; from
++)
1712 priority
[from
] = -100;
1718 /* Look for a match with a known old-fashioned option. */
1719 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1720 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1722 options
[from
] = standard_args
[i
].nargs
;
1723 priority
[from
] = standard_args
[i
].priority
;
1724 if (from
+ standard_args
[i
].nargs
>= argc
)
1725 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1726 from
+= standard_args
[i
].nargs
;
1730 /* Look for a match with a known long option.
1731 MATCH is -1 if no match so far, -2 if two or more matches so far,
1732 >= 0 (the table index of the match) if just one match so far. */
1733 if (argv
[from
][1] == '-')
1735 char const *equals
= strchr (argv
[from
], '=');
1737 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1742 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1743 if (standard_args
[i
].longname
1744 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1753 /* If we found exactly one match, use that. */
1756 options
[from
] = standard_args
[match
].nargs
;
1757 priority
[from
] = standard_args
[match
].priority
;
1758 /* If --OPTION=VALUE syntax is used,
1759 this option uses just one argv element. */
1762 if (from
+ options
[from
] >= argc
)
1763 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1764 from
+= options
[from
];
1766 /* FIXME When match < 0, shouldn't there be some error,
1767 or at least indication to the user that there was a
1774 /* Copy the arguments, in order of decreasing priority, to NEW. */
1776 while (incoming_used
< argc
)
1779 int best_priority
= -9999;
1781 /* Find the highest priority remaining option.
1782 If several have equal priority, take the first of them. */
1783 for (from
= 1; from
< argc
; from
++)
1785 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1787 best_priority
= priority
[from
];
1790 /* Skip option arguments--they are tied to the options. */
1791 if (options
[from
] > 0)
1792 from
+= options
[from
];
1798 /* Copy the highest priority remaining option, with its args, to NEW.
1799 Unless it is a duplicate of the previous one. */
1800 if (! (options
[best
] == 0
1801 && ! strcmp (new[to
- 1], argv
[best
])))
1803 new[to
++] = argv
[best
];
1804 for (i
= 0; i
< options
[best
]; i
++)
1805 new[to
++] = argv
[best
+ i
+ 1];
1808 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1810 /* Clear out this option in ARGV. */
1812 for (i
= 0; i
< options
[best
]; i
++)
1813 argv
[best
+ i
+ 1] = 0;
1816 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1820 memcpy (argv
, new, sizeof (char *) * argc
);
1827 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1828 doc
: /* Exit the Emacs job and kill it.
1829 If ARG is an integer, return ARG as the exit program code.
1830 If ARG is a string, stuff it as keyboard input.
1832 This function is called upon receipt of the signals SIGTERM
1833 or SIGHUP, and upon SIGINT in batch mode.
1835 The value of `kill-emacs-hook', if not void,
1836 is a list of functions (of no args),
1837 all of which are called before Emacs is actually killed. */)
1840 struct gcpro gcpro1
;
1848 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1850 waiting_for_input
= 0;
1851 Frun_hooks (1, &Qkill_emacs_hook
);
1854 #ifdef HAVE_X_WINDOWS
1855 /* Transfer any clipboards we own to the clipboard manager. */
1856 x_clipboard_manager_save_all ();
1859 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1862 ns_release_autorelease_pool (ns_pool
);
1865 /* If we have an auto-save list file,
1866 kill it because we are exiting Emacs deliberately (not crashing).
1867 Do it after shut_down_emacs, which does an auto-save. */
1868 if (STRINGP (Vauto_save_list_file_name
))
1870 Lisp_Object listfile
;
1871 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1872 unlink (SSDATA (listfile
));
1876 exit_code
= (XINT (arg
) < 0
1877 ? XINT (arg
) | INT_MIN
1878 : XINT (arg
) & INT_MAX
);
1880 exit_code
= EXIT_SUCCESS
;
1885 /* Perform an orderly shutdown of Emacs. Autosave any modified
1886 buffers, kill any child processes, clean up the terminal modes (if
1887 we're in the foreground), and other stuff like that. Don't perform
1888 any redisplay; this may be called when Emacs is shutting down in
1889 the background, or after its X connection has died.
1891 If SIG is a signal number, print a message for it.
1893 This is called by fatal signal handlers, X protocol error handlers,
1897 shut_down_emacs (int sig
, Lisp_Object stuff
)
1899 /* Prevent running of hooks from now on. */
1902 /* Don't update display from now on. */
1903 Vinhibit_redisplay
= Qt
;
1905 /* If we are controlling the terminal, reset terminal modes. */
1908 pid_t pgrp
= getpgrp ();
1909 pid_t tpgrp
= tcgetpgrp (0);
1910 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1912 reset_all_sys_modes ();
1913 if (sig
&& sig
!= SIGTERM
)
1915 static char const format
[] = "Fatal error %d: ";
1916 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1917 int buflen
= sprintf (buf
, format
, sig
);
1918 char const *sig_desc
= safe_strsignal (sig
);
1919 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1920 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1926 reset_all_sys_modes ();
1929 stuff_buffered_input (stuff
);
1931 inhibit_sentinels
= 1;
1932 kill_buffer_processes (Qnil
);
1933 Fdo_auto_save (Qt
, Qnil
);
1935 #ifdef CLASH_DETECTION
1936 unlock_all_files ();
1939 /* There is a tendency for a SIGIO signal to arrive within exit,
1940 and cause a SIGHUP because the input descriptor is already closed. */
1944 /* Do this only if terminating normally, we want glyph matrices
1945 etc. in a core dump. */
1946 if (sig
== 0 || sig
== SIGTERM
)
1948 check_glyph_memory ();
1949 check_message_stack ();
1957 ns_term_shutdown (sig
);
1961 xml_cleanup_parser ();
1975 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1976 doc
: /* Dump current state of Emacs into executable file FILENAME.
1977 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1978 This is used in the file `loadup.el' when building Emacs.
1980 You must run Emacs in batch mode in order to dump it. */)
1981 (Lisp_Object filename
, Lisp_Object symfile
)
1985 ptrdiff_t count
= SPECPDL_INDEX ();
1989 if (! noninteractive
)
1990 error ("Dumping Emacs works only in batch mode");
1994 /* Warn if the gap between BSS end and heap start is larger than this. */
1995 # define MAX_HEAP_BSS_DIFF (1024*1024)
1997 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1999 fprintf (stderr
, "**************************************************\n");
2000 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2001 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2003 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2004 fprintf (stderr
, "fail because of this. See the section about\n");
2005 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2006 fprintf (stderr
, "**************************************************\n");
2008 #endif /* GNU_LINUX */
2010 /* Bind `command-line-processed' to nil before dumping,
2011 so that the dumped Emacs will process its command line
2012 and set up to work with X windows if appropriate. */
2013 symbol
= intern ("command-line-processed");
2014 specbind (symbol
, Qnil
);
2016 CHECK_STRING (filename
);
2017 filename
= Fexpand_file_name (filename
, Qnil
);
2018 if (!NILP (symfile
))
2020 CHECK_STRING (symfile
);
2021 if (SCHARS (symfile
))
2022 symfile
= Fexpand_file_name (symfile
, Qnil
);
2026 Vpurify_flag
= Qnil
;
2029 set_time_zone_rule (dump_tz
);
2030 #ifndef LOCALTIME_CACHE
2031 /* Force a tz reload, since set_time_zone_rule doesn't. */
2037 /* Tell malloc where start of impure now is. */
2038 /* Also arrange for warnings when nearly out of space. */
2039 #ifndef SYSTEM_MALLOC
2041 /* On Windows, this was done before dumping, and that once suffices.
2042 Meanwhile, my_edata is not valid on Windows. */
2044 extern char my_edata
[];
2045 memory_warnings (my_edata
, malloc_warning
);
2047 #endif /* not WINDOWSNT */
2048 #endif /* not SYSTEM_MALLOC */
2049 #ifdef DOUG_LEA_MALLOC
2050 malloc_state_ptr
= malloc_get_state ();
2053 #ifdef USE_MMAP_FOR_BUFFERS
2056 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2057 #ifdef USE_MMAP_FOR_BUFFERS
2060 #ifdef DOUG_LEA_MALLOC
2061 free (malloc_state_ptr
);
2065 Vlibrary_cache
= Qnil
;
2067 #ifdef HAVE_WINDOW_SYSTEM
2068 reset_image_types ();
2073 return unbind_to (count
, Qnil
);
2076 #endif /* not CANNOT_DUMP */
2079 /* Recover from setlocale (LC_ALL, ""). */
2083 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2084 so that numbers are read and printed properly for Emacs Lisp. */
2085 setlocale (LC_NUMERIC
, "C");
2088 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2091 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2093 if (! EQ (*plocale
, desired_locale
))
2095 *plocale
= desired_locale
;
2096 setlocale (category
, (STRINGP (desired_locale
)
2097 ? SSDATA (desired_locale
)
2102 /* Set system time locale to match Vsystem_time_locale, if possible. */
2104 synchronize_system_time_locale (void)
2106 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2107 Vsystem_time_locale
);
2110 /* Set system messages locale to match Vsystem_messages_locale, if
2113 synchronize_system_messages_locale (void)
2116 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2117 Vsystem_messages_locale
);
2120 #endif /* HAVE_SETLOCALE */
2124 decode_env_path (const char *evarname
, const char *defalt
)
2126 const char *path
, *p
;
2127 Lisp_Object lpath
, element
, tem
;
2130 const char *emacs_dir
= egetenv ("emacs_dir");
2131 static const char *emacs_dir_env
= "%emacs_dir%/";
2132 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2135 /* It's okay to use getenv here, because this function is only used
2136 to initialize variables when Emacs starts up, and isn't called
2139 path
= getenv (evarname
);
2150 /* Ensure values from the environment use the proper directory separator. */
2153 char *path_copy
= alloca (strlen (path
) + 1);
2154 strcpy (path_copy
, path
);
2155 dostounix_filename (path_copy
, 0);
2162 p
= strchr (path
, SEPCHAR
);
2164 p
= path
+ strlen (path
);
2165 element
= (p
- path
? make_string (path
, p
- path
)
2166 : build_string ("."));
2168 /* Relative file names in the default path are interpreted as
2169 being relative to $emacs_dir. */
2170 if (emacs_dir
&& defaulted
2171 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2172 element
= Fexpand_file_name (Fsubstring (element
,
2173 make_number (emacs_dir_len
),
2175 build_string (emacs_dir
));
2178 /* Add /: to the front of the name
2179 if it would otherwise be treated as magic. */
2180 tem
= Ffind_file_name_handler (element
, Qt
);
2182 /* However, if the handler says "I'm safe",
2183 don't bother adding /:. */
2187 prop
= Fget (tem
, intern ("safe-magic"));
2193 element
= concat2 (build_string ("/:"), element
);
2195 lpath
= Fcons (element
, lpath
);
2201 return Fnreverse (lpath
);
2204 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2205 doc
: /* Return non-nil if the current emacs process is a daemon.
2206 If the daemon was given a name argument, return that name. */)
2211 return build_string (daemon_name
);
2218 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2219 doc
: /* Mark the Emacs daemon as being initialized.
2220 This finishes the daemonization process by doing the other half of detaching
2221 from the parent process and its tty file descriptors. */)
2228 error ("This function can only be called if emacs is run as a daemon");
2230 if (daemon_pipe
[1] < 0)
2231 error ("The daemon has already been initialized");
2233 if (NILP (Vafter_init_time
))
2234 error ("This function can only be called after loading the init files");
2236 /* Get rid of stdin, stdout and stderr. */
2237 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2239 err
|= dup2 (nfd
, 0) < 0;
2240 err
|= dup2 (nfd
, 1) < 0;
2241 err
|= dup2 (nfd
, 2) < 0;
2242 err
|= close (nfd
) != 0;
2244 /* Closing the pipe will notify the parent that it can exit.
2245 FIXME: In case some other process inherited the pipe, closing it here
2246 won't notify the parent because it's still open elsewhere, so we
2247 additionally send a byte, just to make sure the parent really exits.
2248 Instead, we should probably close the pipe in start-process and
2249 call-process to make sure the pipe is never inherited by
2251 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2252 err
|= close (daemon_pipe
[1]) != 0;
2253 /* Set it to an invalid value so we know we've already run this function. */
2254 daemon_pipe
[1] = -1;
2257 error ("I/O error during daemon initialization");
2262 syms_of_emacs (void)
2264 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2265 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2266 DEFSYM (Qkill_emacs
, "kill-emacs");
2267 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
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. */