1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013
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/>. */
21 #define INLINE EXTERN_INLINE
27 #include <sys/types.h>
31 #include <close-stream.h>
38 #include <sys/socket.h>
43 #if defined WINDOWSNT || defined HAVE_NTGUI
44 #include "w32select.h"
46 #include "w32common.h"
53 #ifdef HAVE_WINDOW_SYSTEM
55 #endif /* HAVE_WINDOW_SYSTEM */
57 #ifdef NS_IMPL_GNUSTEP
58 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
59 #include <GNUstepBase/GSConfig.h>
63 #include "intervals.h"
64 #include "character.h"
70 #include "blockinput.h"
71 #include "syssignal.h"
74 #include "termhooks.h"
79 #include "composite.h"
80 #include "dispextern.h"
88 #if (defined PROFILING \
89 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
90 # include <sys/gmon.h>
91 extern void moncontrol (int mode
);
100 #include <sys/resource.h>
103 #ifdef HAVE_PERSONALITY_LINUX32
104 #include <sys/personality.h>
107 static const char emacs_version
[] = VERSION
;
108 static const char emacs_copyright
[] = COPYRIGHT
;
110 /* Empty lisp strings. To avoid having to build any others. */
111 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
114 /* Cache for externally loaded libraries. */
115 Lisp_Object Vlibrary_cache
;
118 /* Set after Emacs has started up the first time.
119 Prevents reinitialization of the Lisp world and keymaps
120 on subsequent starts. */
124 extern void unexec_init_emacs_zone (void);
127 #ifdef DOUG_LEA_MALLOC
128 /* Preserves a pointer to the memory allocated that copies that
129 static data inside glibc's malloc. */
130 static void *malloc_state_ptr
;
131 /* From glibc, a routine that returns a copy of the malloc internal state. */
132 extern void *malloc_get_state (void);
133 /* From glibc, a routine that overwrites the malloc internal state. */
134 extern int malloc_set_state (void*);
135 /* True if the MALLOC_CHECK_ environment variable was set while
136 dumping. Used to work around a bug in glibc's malloc. */
137 static bool malloc_using_checking
;
138 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
139 extern void malloc_enable_thread (void);
142 Lisp_Object Qfile_name_handler_alist
;
144 Lisp_Object Qrisky_local_variable
;
146 Lisp_Object Qkill_emacs
;
147 static Lisp_Object Qkill_emacs_hook
;
149 /* If true, Emacs should not attempt to use a window-specific code,
150 but instead should use the virtual terminal under which it was started. */
151 bool inhibit_window_system
;
153 /* If true, a filter or a sentinel is running. Tested to save the match
154 data on the first attempt to change it inside asynchronous code. */
155 bool running_asynch_code
;
157 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
158 /* If true, -d was specified, meaning we're using some window system. */
162 /* An address near the bottom of the stack.
163 Tells GC how to save a copy of the stack. */
166 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
167 /* The address where the heap starts (from the first sbrk (0) call). */
168 static void *my_heap_start
;
172 /* The gap between BSS end and heap start as far as we can tell. */
173 static uprintmax_t heap_bss_diff
;
176 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
179 On Cocoa, CoreFoundation lib fails in forked process:
180 http://developer.apple.com/ReleaseNotes/
181 CoreFoundation/CoreFoundation.html)
183 On Windows, a Cygwin fork child cannot access the USER subsystem.
185 We mark being in the exec'd process by a daemon name argument of
186 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
187 NAME is the original daemon name, if any. */
188 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
189 # define DAEMON_MUST_EXEC
192 /* True means running Emacs without interactive terminal. */
195 /* True means remove site-lisp directories from load-path. */
198 /* Name for the server started by the daemon.*/
199 static char *daemon_name
;
201 /* Pipe used to send exit notification to the daemon parent at
205 /* Save argv and argc. */
209 static void sort_args (int argc
, char **argv
);
210 static void syms_of_emacs (void);
212 /* C89 needs each string be at most 509 characters, so the usage
213 strings below are split to not overflow this limit. */
214 static char const *const usage_message
[] =
217 Run Emacs, the extensible, customizable, self-documenting real-time\n\
218 display editor. The recommended way to start Emacs for normal editing\n\
219 is with no options at all.\n\
221 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
222 read the main documentation for these command-line arguments.\n\
224 Initialization options:\n\
228 --batch do not do interactive display; implies -q\n\
229 --chdir DIR change to directory DIR\n\
230 --daemon start a server in the background\n\
231 --debug-init enable Emacs Lisp debugger for init file\n\
232 --display, -d DISPLAY use X server DISPLAY\n\
235 --no-desktop do not load a saved desktop\n\
236 --no-init-file, -q load neither ~/.emacs nor default.el\n\
237 --no-shared-memory, -nl do not use shared memory\n\
238 --no-site-file do not load site-start.el\n\
239 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
240 --no-splash do not display a splash screen on startup\n\
241 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
244 --quick, -Q equivalent to:\n\
245 -q --no-site-file --no-site-lisp --no-splash\n\
246 --script FILE run FILE as an Emacs Lisp script\n\
247 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
254 FILE visit FILE using find-file\n\
255 +LINE go to line LINE in next FILE\n\
256 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
257 --directory, -L DIR add DIR to variable load-path\n\
258 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
259 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
262 --file FILE visit FILE using find-file\n\
263 --find-file FILE visit FILE using find-file\n\
264 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
265 --insert FILE insert contents of FILE into current buffer\n\
266 --kill exit without asking for confirmation\n\
267 --load, -l FILE load Emacs Lisp FILE using the load function\n\
268 --visit FILE visit FILE using find-file\n\
274 --background-color, -bg COLOR window background color\n\
275 --basic-display, -D disable many display features;\n\
276 used for debugging Emacs\n\
277 --border-color, -bd COLOR main border color\n\
278 --border-width, -bw WIDTH width of main border\n\
281 --color, --color=MODE override color mode for character terminals;\n\
282 MODE defaults to `auto', and\n\
283 can also be `never', `always',\n\
284 or a mode name like `ansi8'\n\
285 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
286 --font, -fn FONT default font; must be fixed-width\n\
287 --foreground-color, -fg COLOR window foreground color\n\
290 --fullheight, -fh make the first frame high as the screen\n\
291 --fullscreen, -fs make the first frame fullscreen\n\
292 --fullwidth, -fw make the first frame wide as the screen\n\
293 --maximized, -mm make the first frame maximized\n\
294 --geometry, -g GEOMETRY window geometry\n\
297 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
298 --iconic start Emacs in iconified state\n\
299 --internal-border, -ib WIDTH width between text and main border\n\
300 --line-spacing, -lsp PIXELS additional space to put between lines\n\
301 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
302 --name NAME title for initial Emacs frame\n\
305 --no-blinking-cursor, -nbc disable blinking cursor\n\
306 --reverse-video, -r, -rv switch foreground and background\n\
307 --title, -T TITLE title for initial Emacs frame\n\
308 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
309 --xrm XRESOURCES set additional X resources\n\
310 --parent-id XID set parent window\n\
311 --help display this help and exit\n\
312 --version output version information and exit\n\
316 You can generally also specify long option names with a single -; for\n\
317 example, -batch as well as --batch. You can use any unambiguous\n\
318 abbreviation for a --option.\n\
320 Various environment variables and window system resources also affect\n\
321 the operation of Emacs. See the main documentation.\n\
323 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
324 section of the Emacs manual or the file BUGS.\n"
328 /* True if handling a fatal error already. */
329 bool fatal_error_in_progress
;
332 /* NS autrelease pool, for memory management. */
333 static void *ns_pool
;
338 setlocale (int cat
, char const *locale
)
345 /* Report a fatal error due to signal SIG, output a backtrace of at
346 most BACKTRACE_LIMIT lines, and exit. */
348 terminate_due_to_signal (int sig
, int backtrace_limit
)
350 signal (sig
, SIG_DFL
);
351 totally_unblock_input ();
353 /* If fatal error occurs in code below, avoid infinite recursion. */
354 if (! fatal_error_in_progress
)
356 fatal_error_in_progress
= 1;
358 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
359 Fkill_emacs (make_number (sig
));
361 shut_down_emacs (sig
, Qnil
);
362 emacs_backtrace (backtrace_limit
);
365 /* Signal the same code; this time it will really be fatal.
366 Since we're in a signal handler, the signal is blocked, so we
367 have to unblock it if we want to really receive it. */
371 sigemptyset (&unblocked
);
372 sigaddset (&unblocked
, sig
);
373 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
379 /* This shouldn't be executed, but it prevents a warning. */
383 /* Code for dealing with Lisp access to the Unix command line. */
386 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
389 Lisp_Object name
, dir
, handler
;
390 ptrdiff_t count
= SPECPDL_INDEX ();
391 Lisp_Object raw_name
;
396 raw_name
= build_string (argv
[0]);
398 /* Add /: to the front of the name
399 if it would otherwise be treated as magic. */
400 handler
= Ffind_file_name_handler (raw_name
, Qt
);
401 if (! NILP (handler
))
402 raw_name
= concat2 (build_string ("/:"), raw_name
);
404 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
405 Vinvocation_directory
= Ffile_name_directory (raw_name
);
407 /* If we got no directory in argv[0], search PATH to find where
408 Emacs actually came from. */
409 if (NILP (Vinvocation_directory
))
412 int yes
= openp (Vexec_path
, Vinvocation_name
,
413 Vexec_suffixes
, &found
, make_number (X_OK
));
416 /* Add /: to the front of the name
417 if it would otherwise be treated as magic. */
418 handler
= Ffind_file_name_handler (found
, Qt
);
419 if (! NILP (handler
))
420 found
= concat2 (build_string ("/:"), found
);
421 Vinvocation_directory
= Ffile_name_directory (found
);
425 if (!NILP (Vinvocation_directory
)
426 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
427 /* Emacs was started with relative path, like ./emacs.
430 Lisp_Object odir
= original_pwd
? build_string (original_pwd
) : Qnil
;
431 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
434 Vinstallation_directory
= Qnil
;
436 if (!NILP (Vinvocation_directory
))
438 dir
= Vinvocation_directory
;
440 /* If we are running from the build directory, set DIR to the
441 src subdirectory of the Emacs tree, like on Posix
443 if (SBYTES (dir
) > sizeof ("/i386/") - 1
444 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
446 dir
= Fexpand_file_name (build_string ("../.."), dir
);
447 #else /* !WINDOWSNT */
449 name
= Fexpand_file_name (Vinvocation_name
, dir
);
452 Lisp_Object tem
, lib_src_exists
;
453 Lisp_Object etc_exists
, info_exists
;
455 /* See if dir contains subdirs for use by Emacs.
456 Check for the ones that would exist in a build directory,
457 not including lisp and info. */
458 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
459 lib_src_exists
= Ffile_exists_p (tem
);
462 /* MSDOS installations frequently remove lib-src, but we still
463 must set installation-directory, or else info won't find
464 its files (it uses the value of installation-directory). */
465 tem
= Fexpand_file_name (build_string ("info"), dir
);
466 info_exists
= Ffile_exists_p (tem
);
471 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
473 tem
= Fexpand_file_name (build_string ("etc"), dir
);
474 etc_exists
= Ffile_exists_p (tem
);
475 if (!NILP (etc_exists
))
477 Vinstallation_directory
478 = Ffile_name_as_directory (dir
);
483 /* See if dir's parent contains those subdirs. */
484 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
485 lib_src_exists
= Ffile_exists_p (tem
);
489 /* See the MSDOS commentary above. */
490 tem
= Fexpand_file_name (build_string ("../info"), dir
);
491 info_exists
= Ffile_exists_p (tem
);
496 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
498 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
499 etc_exists
= Ffile_exists_p (tem
);
500 if (!NILP (etc_exists
))
502 tem
= Fexpand_file_name (build_string (".."), dir
);
503 Vinstallation_directory
504 = Ffile_name_as_directory (tem
);
509 /* If the Emacs executable is actually a link,
510 next try the dir that the link points into. */
511 tem
= Ffile_symlink_p (name
);
514 name
= Fexpand_file_name (tem
, dir
);
515 dir
= Ffile_name_directory (name
);
522 Vcommand_line_args
= Qnil
;
524 for (i
= argc
- 1; i
>= 0; i
--)
526 if (i
== 0 || i
> skip_args
)
527 /* For the moment, we keep arguments as is in unibyte strings.
528 They are decoded in the function command-line after we know
529 locale-coding-system. */
531 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
534 unbind_to (count
, Qnil
);
537 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
538 doc
: /* Return the program name that was used to run Emacs.
539 Any directory names are omitted. */)
542 return Fcopy_sequence (Vinvocation_name
);
545 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
547 doc
: /* Return the directory name in which the Emacs executable was located. */)
550 return Fcopy_sequence (Vinvocation_directory
);
555 /* A valid but unlikely value for the TZ environment value.
556 It is OK (though a bit slower) if the user actually chooses this value. */
557 static char const dump_tz
[] = "UtC0";
560 /* Test whether the next argument in ARGV matches SSTR or a prefix of
561 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
562 (the argument is supposed to have a value) store in *VALPTR either
563 the next argument or the portion of this one after the equal sign.
564 ARGV is read starting at position *SKIPPTR; this index is advanced
565 by the number of arguments used.
567 Too bad we can't just use getopt for all of this, but we don't have
568 enough information to do it right. */
571 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
572 int minlen
, char **valptr
, int *skipptr
)
578 /* Don't access argv[argc]; give up in advance. */
579 if (argc
<= *skipptr
+ 1)
582 arg
= argv
[*skipptr
+1];
585 if (strcmp (arg
, sstr
) == 0)
589 *valptr
= argv
[*skipptr
+2];
596 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
597 ? p
- arg
: strlen (arg
));
598 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
600 else if (valptr
== NULL
)
611 else if (argv
[*skipptr
+2] != NULL
)
613 *valptr
= argv
[*skipptr
+2];
623 #ifdef DOUG_LEA_MALLOC
625 /* malloc can be invoked even before main (e.g. by the dynamic
626 linker), so the dumped malloc state must be restored as early as
627 possible using this special hook. */
630 malloc_initialize_hook (void)
634 if (!malloc_using_checking
)
635 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
636 ignored if the heap to be restored was constructed without
637 malloc checking. Can't use unsetenv, since that calls malloc. */
641 for (p
= environ
; p
&& *p
; p
++)
642 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
651 malloc_set_state (malloc_state_ptr
);
652 #ifndef XMALLOC_OVERRUN_CHECK
653 free (malloc_state_ptr
);
658 if (my_heap_start
== 0)
659 my_heap_start
= sbrk (0);
660 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
664 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
666 #endif /* DOUG_LEA_MALLOC */
668 /* Close standard output and standard error, reporting any write
669 errors as best we can. This is intended for use with atexit. */
671 close_output_streams (void)
673 if (close_stream (stdout
) != 0)
675 emacs_perror ("Write error to standard output");
676 _exit (EXIT_FAILURE
);
679 if (close_stream (stderr
) != 0)
680 _exit (EXIT_FAILURE
);
685 main (int argc
, char **argv
)
690 char stack_bottom_variable
;
691 bool do_initial_setlocale
;
694 #ifdef HAVE_SETRLIMIT
700 #ifdef DAEMON_MUST_EXEC
705 /* If we use --chdir, this records the original directory. */
706 char *original_pwd
= 0;
712 #ifdef G_SLICE_ALWAYS_MALLOC
713 /* This is used by the Cygwin build. It's not needed starting with
714 cygwin-1.7.24, but it doesn't do any harm. */
715 xputenv ("G_SLICE=always-malloc");
721 extern char my_endbss
[];
722 extern char *my_endbss_static
;
724 if (my_heap_start
== 0)
725 my_heap_start
= sbrk (0);
727 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
731 #if defined WINDOWSNT || defined HAVE_NTGUI
732 /* Set global variables used to detect Windows version. Do this as
733 early as possible. (unexw32.c calls this function as well, but
734 the additional call here is harmless.) */
735 cache_system_info ();
738 #ifdef RUN_TIME_REMAP
740 run_time_remap (argv
[0]);
743 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
746 unexec_init_emacs_zone ();
749 atexit (close_output_streams
);
751 sort_args (argc
, argv
);
753 while (argv
[argc
]) argc
++;
755 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
757 const char *version
, *copyright
;
760 Lisp_Object tem
, tem2
;
761 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
762 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
765 fprintf (stderr
, "Invalid value of `emacs-version'\n");
770 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
775 version
= SSDATA (tem
);
776 copyright
= SSDATA (tem2
);
781 version
= emacs_version
;
782 copyright
= emacs_copyright
;
784 printf ("GNU Emacs %s\n", version
);
785 printf ("%s\n", copyright
);
786 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
787 printf ("You may redistribute copies of Emacs\n");
788 printf ("under the terms of the GNU General Public License.\n");
789 printf ("For more information about these matters, ");
790 printf ("see the file named COPYING.\n");
794 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
796 original_pwd
= get_current_dir_name ();
797 if (chdir (ch_to_dir
) != 0)
799 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
800 argv
[0], ch_to_dir
, strerror (errno
));
805 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
806 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
808 #ifdef HAVE_PERSONALITY_LINUX32
809 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
811 /* Set this so we only do this once. */
812 xputenv ("EMACS_HEAP_EXEC=true");
814 /* A flag to turn off address randomization which is introduced
815 in linux kernel shipped with fedora core 4 */
816 #define ADD_NO_RANDOMIZE 0x0040000
817 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
818 #undef ADD_NO_RANDOMIZE
820 execvp (argv
[0], argv
);
822 /* If the exec fails, try to dump anyway. */
823 emacs_perror (argv
[0]);
825 #endif /* HAVE_PERSONALITY_LINUX32 */
827 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
828 /* Extend the stack space available.
829 Don't do that if dumping, since some systems (e.g. DJGPP)
830 might define a smaller stack limit at that time. */
833 && (!noninteractive
|| initialized
)
835 && !getrlimit (RLIMIT_STACK
, &rlim
))
838 extern size_t re_max_failures
;
839 /* Approximate the amount regex.c needs per unit of re_max_failures. */
840 int ratio
= 20 * sizeof (char *);
841 /* Then add 33% to cover the size of the smaller stacks that regex.c
842 successively allocates and discards, on its way to the maximum. */
844 /* Add in some extra to cover
845 what we're likely to use for other reasons. */
846 newlim
= re_max_failures
* ratio
+ 200000;
848 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
849 stack allocation routine for new process that the allocation
850 fails if stack limit is not on page boundary. So, round up the
851 new limit to page boundary. */
852 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
854 if (newlim
> rlim
.rlim_max
)
856 newlim
= rlim
.rlim_max
;
857 /* Don't let regex.c overflow the stack we have. */
858 re_max_failures
= (newlim
- 200000) / ratio
;
860 if (rlim
.rlim_cur
< newlim
)
861 rlim
.rlim_cur
= newlim
;
863 setrlimit (RLIMIT_STACK
, &rlim
);
865 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
867 /* Record (approximately) where the stack begins. */
868 stack_bottom
= &stack_bottom_variable
;
872 #ifndef SYSTEM_MALLOC
873 /* Arrange to get warning messages as memory fills up. */
874 memory_warnings (0, malloc_warning
);
876 /* Call malloc at least once, to run malloc_initialize_hook.
877 Also call realloc and free for consistency. */
878 free (realloc (malloc (4), 4));
880 #endif /* not SYSTEM_MALLOC */
882 #if defined (MSDOS) || defined (WINDOWSNT)
883 /* We do all file input/output as binary files. When we need to translate
884 newlines, we do that manually. */
886 #endif /* MSDOS || WINDOWSNT */
889 if (!isatty (fileno (stdin
)))
890 setmode (fileno (stdin
), O_BINARY
);
891 if (!isatty (fileno (stdout
)))
894 setmode (fileno (stdout
), O_BINARY
);
898 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
899 The build procedure uses this while dumping, to ensure that the
900 dumped Emacs does not have its system locale tables initialized,
901 as that might cause screwups when the dumped Emacs starts up. */
903 char *lc_all
= getenv ("LC_ALL");
904 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
907 /* Set locale now, so that initial error messages are localized properly.
908 fixup_locale must wait until later, since it builds strings. */
909 if (do_initial_setlocale
)
910 setlocale (LC_ALL
, "");
912 inhibit_window_system
= 0;
914 /* Handle the -t switch, which specifies filename to use as terminal. */
918 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
923 result
= emacs_open (term
, O_RDWR
, 0);
924 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
926 char *errstring
= strerror (errno
);
927 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
932 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
935 fprintf (stderr
, "Using %s\n", term
);
936 #ifdef HAVE_WINDOW_SYSTEM
937 inhibit_window_system
= 1; /* -t => -nw */
944 /* Command line option --no-windows is deprecated and thus not mentioned
945 in the manual and usage information. */
946 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
947 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
948 inhibit_window_system
= 1;
950 /* Handle the -batch switch, which means don't do interactive display. */
952 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
955 Vundo_outer_limit
= Qnil
;
957 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
959 noninteractive
= 1; /* Set batch mode. */
960 /* Convert --script to -scriptload, un-skip it, and sort again
961 so that it will be handled in proper sequence. */
962 /* FIXME broken for --script=FILE - is that supposed to work? */
963 argv
[skip_args
- 1] = (char *) "-scriptload";
965 sort_args (argc
, argv
);
968 /* Handle the --help option, which gives a usage message. */
969 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
972 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
973 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
974 fputs (usage_message
[i
], stdout
);
978 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
979 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
984 /* Start as a daemon: fork a new child process which will run the
985 rest of the initialization code, then exit.
987 Detaching a daemon requires the following steps:
991 - close the tty file-descriptors
993 We only want to do the last 2 steps once the daemon is ready to
994 serve requests, i.e. after loading .emacs (initialization).
995 OTOH initialization may start subprocesses (e.g. ispell) and these
996 should be run from the proper process (the one that will end up
997 running as daemon) and with the proper "session id" in order for
998 them to keep working after detaching, so fork and setsid need to be
999 performed before initialization.
1001 We want to avoid exiting before the server socket is ready, so
1002 use a pipe for synchronization. The parent waits for the child
1003 to close its end of the pipe (using `daemon-initialized')
1005 if (emacs_pipe (daemon_pipe
) != 0)
1007 fprintf (stderr
, "Cannot pipe!\n");
1011 #ifndef DAEMON_MUST_EXEC
1013 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1014 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1015 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1016 #endif /* USE_GTK */
1018 #else /* DAEMON_MUST_EXEC */
1019 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1020 f
= fork (); /* in orig */
1022 f
= 0; /* in exec'd */
1023 #endif /* !DAEMON_MUST_EXEC */
1029 /* Close unused writing end of the pipe. */
1030 emacs_close (daemon_pipe
[1]);
1032 /* Just wait for the child to close its end of the pipe. */
1035 retval
= read (daemon_pipe
[0], &buf
, 1);
1037 while (retval
== -1 && errno
== EINTR
);
1041 fprintf (stderr
, "Error reading status from child\n");
1044 else if (retval
== 0)
1046 fprintf (stderr
, "Error: server did not start correctly\n");
1050 emacs_close (daemon_pipe
[0]);
1055 emacs_perror ("fork");
1056 exit (EXIT_CANCELED
);
1059 #ifdef DAEMON_MUST_EXEC
1061 /* In orig process, forked as child, OR in exec'd. */
1062 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1063 { /* In orig, child: now exec w/special daemon name. */
1066 snprintf (fdStr
, sizeof fdStr
,
1067 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1068 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1070 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1072 fprintf (stderr
, "daemon: child name too long\n");
1073 exit (EXIT_CANNOT_INVOKE
);
1076 argv
[skip_args
] = fdStr
;
1078 execvp (argv
[0], argv
);
1079 emacs_perror (argv
[0]);
1080 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1083 /* In exec'd: parse special dname into pipe and name info. */
1084 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1085 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1087 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1088 exit (EXIT_CANNOT_INVOKE
);
1090 dname_arg2
[0] = '\0';
1091 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1093 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1095 #endif /* DAEMON_MUST_EXEC */
1098 daemon_name
= xstrdup (dname_arg
);
1099 /* Close unused reading end of the pipe. */
1100 emacs_close (daemon_pipe
[0]);
1104 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1109 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1110 # ifndef CANNOT_DUMP
1111 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1112 that causes an infinite recursive loop with FreeBSD. But do make
1113 it thread-safe when creating emacs, otherwise bootstrap-emacs
1114 fails on Cygwin. See Bug#14569. */
1115 if (!noninteractive
|| initialized
)
1117 malloc_enable_thread ();
1120 init_signals (dumping
);
1122 noninteractive1
= noninteractive
;
1124 /* Perform basic initializations (not merely interning symbols). */
1131 init_charset_once ();
1132 init_coding_once ();
1133 init_syntax_once (); /* Create standard syntax table. */
1134 init_category_once (); /* Create standard category table. */
1135 init_casetab_once (); /* Must be done before init_buffer_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 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1162 /* Before syms_of_coding because it initializes Qcharsetp. */
1164 /* Before init_window_once, because it sets up the
1165 Vcoding_system_hash_table. */
1166 syms_of_coding (); /* This should be after syms_of_fileio. */
1168 init_window_once (); /* Init the window system. */
1169 #ifdef HAVE_WINDOW_SYSTEM
1170 init_fringe_once (); /* Swap bitmaps if necessary. */
1171 #endif /* HAVE_WINDOW_SYSTEM */
1176 if (do_initial_setlocale
)
1179 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1180 Vsystem_time_locale
= Vprevious_system_time_locale
;
1185 running_asynch_code
= 0;
1189 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1192 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1195 ns_pool
= ns_alloc_autorelease_pool ();
1196 if (!noninteractive
)
1198 #ifdef NS_IMPL_COCOA
1199 /* Started from GUI? */
1200 /* FIXME: Do the right thing if getenv returns NULL, or if
1202 if (! inhibit_window_system
&& ! isatty (0))
1203 chdir (getenv ("HOME"));
1204 if (skip_args
< argc
)
1206 if (!strncmp (argv
[skip_args
], "-psn", 4))
1209 chdir (getenv ("HOME"));
1211 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1214 chdir (getenv ("HOME"));
1219 #endif /* HAVE_NS */
1221 #ifdef HAVE_X_WINDOWS
1222 /* Stupid kludge to catch command-line display spec. We can't
1223 handle this argument entirely in window system dependent code
1224 because we don't even know which window system dependent code
1225 to run until we've recognized this argument. */
1227 char *displayname
= 0;
1228 int count_before
= skip_args
;
1230 /* Skip any number of -d options, but only use the last one. */
1233 int count_before_this
= skip_args
;
1235 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1237 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1242 count_before
= count_before_this
;
1245 /* If we have the form --display=NAME,
1246 convert it into -d name.
1247 This requires inserting a new element into argv. */
1248 if (displayname
&& count_before
< skip_args
)
1250 if (skip_args
== count_before
+ 1)
1252 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1253 (argc
- (count_before
+ 2)) * sizeof *argv
);
1254 argv
[count_before
+ 2] = displayname
;
1257 argv
[count_before
+ 1] = (char *) "-d";
1262 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1263 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1267 /* Don't actually discard this arg. */
1268 skip_args
= count_before
;
1270 #else /* !HAVE_X_WINDOWS */
1273 int count_before
= skip_args
;
1275 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1276 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1279 skip_args
= count_before
;
1283 /* argmatch must not be used after here,
1284 except when building temacs
1285 because the -d argument has not been skipped in skip_args. */
1288 /* Call early 'cause init_environment needs it. */
1290 /* Set defaults for several environment variables. */
1292 init_environment (argc
, argv
, skip_args
);
1297 #ifdef HAVE_GFILENOTIFY
1298 globals_of_gfilenotify ();
1303 #ifdef HAVE_W32NOTIFY
1304 globals_of_w32notify ();
1306 /* Initialize environment from registry settings. */
1307 init_environment (argv
);
1308 init_ntproc (dumping
); /* must precede init_editfns. */
1311 /* Initialize and GC-protect Vinitial_environment and
1312 Vprocess_environment before set_initial_environment fills them
1315 syms_of_callproc ();
1316 /* egetenv is a pretty low-level facility, which may get called in
1317 many circumstances; it seems flimsy to put off initializing it
1318 until calling init_callproc. Do not do it when dumping. */
1320 set_initial_environment ();
1322 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1323 if this is not done. Do it after set_global_environment so that we
1324 don't pollute Vglobal_environment. */
1325 /* Setting LANG here will defeat the startup locale processing... */
1330 init_buffer (); /* Init default directory of main buffer. */
1332 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1334 /* Must precede init_lread. */
1335 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1339 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1340 Lisp_Object old_log_max
;
1341 old_log_max
= Vmessage_log_max
;
1342 XSETFASTINT (Vmessage_log_max
, 0);
1343 message_dolog ("", 0, 1, 0);
1344 Vmessage_log_max
= old_log_max
;
1347 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1351 /* Check to see if Emacs has been installed correctly. */
1352 check_windows_init_file ();
1355 /* Intern the names of all standard functions and variables;
1356 define standard keys. */
1360 /* The basic levels of Lisp must come first. Note that
1361 syms_of_data and some others have already been called. */
1366 syms_of_floatfns ();
1369 syms_of_bytecode ();
1371 syms_of_casefiddle ();
1373 syms_of_category ();
1375 syms_of_character ();
1382 syms_of_filelock ();
1385 /* syms_of_keymap (); */
1393 syms_of_terminal ();
1399 syms_of_textprop ();
1400 syms_of_composite ();
1403 #endif /* WINDOWSNT */
1410 #ifdef HAVE_WINDOW_SYSTEM
1413 #endif /* HAVE_WINDOW_SYSTEM */
1414 #ifdef HAVE_X_WINDOWS
1419 syms_of_xsettings ();
1426 #endif /* HAVE_X_WINDOWS */
1433 syms_of_decompress ();
1443 #endif /* HAVE_NTGUI */
1445 #if defined WINDOWSNT || defined HAVE_NTGUI
1446 syms_of_w32select ();
1453 syms_of_win16select ();
1460 syms_of_nsselect ();
1462 #endif /* HAVE_NS */
1468 #ifdef HAVE_GFILENOTIFY
1469 syms_of_gfilenotify ();
1470 #endif /* HAVE_GFILENOTIFY */
1474 #endif /* HAVE_INOTIFY */
1477 syms_of_dbusbind ();
1478 #endif /* HAVE_DBUS */
1482 #ifdef HAVE_W32NOTIFY
1483 syms_of_w32notify ();
1484 #endif /* HAVE_W32NOTIFY */
1485 #endif /* WINDOWSNT */
1487 syms_of_profiler ();
1489 keys_of_casefiddle ();
1492 keys_of_keyboard ();
1498 /* Initialization that must be done even if the global variable
1499 initialized is non zero. */
1501 globals_of_w32font ();
1502 globals_of_w32fns ();
1503 globals_of_w32menu ();
1504 #endif /* HAVE_NTGUI */
1506 #if defined WINDOWSNT || defined HAVE_NTGUI
1507 globals_of_w32select ();
1513 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1514 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1515 init_keyboard (); /* This too must precede init_sys_modes. */
1516 if (!noninteractive
)
1517 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1519 #ifdef HAVE_WINDOW_SYSTEM
1521 #endif /* HAVE_WINDOW_SYSTEM */
1529 /* Handle -l loadup, args passed by Makefile. */
1530 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1531 Vtop_level
= list2 (intern_c_string ("load"), build_string (file
));
1532 /* Unless next switch is -nl, load "loadup.el" first thing. */
1534 Vtop_level
= list2 (intern_c_string ("load"),
1535 build_string ("loadup.el"));
1542 /* If the execution TZ happens to be the same as the dump TZ,
1543 change it to some other value and then change it back,
1544 to force the underlying implementation to reload the TZ info.
1545 This is needed on implementations that load TZ info from files,
1546 since the TZ file contents may differ between dump and execution. */
1547 char *tz
= getenv ("TZ");
1548 if (tz
&& !strcmp (tz
, dump_tz
))
1558 /* Set up for profiling. This is known to work on FreeBSD,
1559 GNU/Linux and MinGW. It might work on some other systems too.
1560 Give it a try and tell us if it works on your system. To compile
1561 for profiling, use the configure option --enable-profiling. */
1562 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1567 extern unsigned char etext
asm ("etext");
1573 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1582 #ifdef LOCALTIME_CACHE
1583 /* Some versions of localtime have a bug. They cache the value of the time
1584 zone rather than looking it up every time. Since localtime() is
1585 called to bolt the undumping time into the undumped emacs, this
1586 results in localtime ignoring the TZ environment variable.
1587 This flushes the new TZ value into localtime. */
1589 #endif /* defined (LOCALTIME_CACHE) */
1591 /* Enter editor command loop. This never returns. */
1597 /* Sort the args so we can find the most important ones
1598 at the beginning of argv. */
1600 /* First, here's a table of all the standard options. */
1602 struct standard_args
1605 const char *longname
;
1610 static const struct standard_args standard_args
[] =
1612 { "-version", "--version", 150, 0 },
1613 { "-chdir", "--chdir", 130, 1 },
1614 { "-t", "--terminal", 120, 1 },
1615 { "-nw", "--no-window-system", 110, 0 },
1616 { "-nw", "--no-windows", 110, 0 },
1617 { "-batch", "--batch", 100, 0 },
1618 { "-script", "--script", 100, 1 },
1619 { "-daemon", "--daemon", 99, 0 },
1620 { "-help", "--help", 90, 0 },
1621 { "-nl", "--no-loadup", 70, 0 },
1622 { "-nsl", "--no-site-lisp", 65, 0 },
1623 /* -d must come last before the options handled in startup.el. */
1624 { "-d", "--display", 60, 1 },
1625 { "-display", 0, 60, 1 },
1626 /* Now for the options handled in `command-line' (startup.el). */
1627 /* (Note that to imply -nsl, -Q is partially handled here.) */
1628 { "-Q", "--quick", 55, 0 },
1629 { "-quick", 0, 55, 0 },
1630 { "-q", "--no-init-file", 50, 0 },
1631 { "-no-init-file", 0, 50, 0 },
1632 { "-no-site-file", "--no-site-file", 40, 0 },
1633 { "-u", "--user", 30, 1 },
1634 { "-user", 0, 30, 1 },
1635 { "-debug-init", "--debug-init", 20, 0 },
1636 { "-iconic", "--iconic", 15, 0 },
1637 { "-D", "--basic-display", 12, 0},
1638 { "-basic-display", 0, 12, 0},
1639 { "-nbc", "--no-blinking-cursor", 12, 0 },
1640 /* Now for the options handled in `command-line-1' (startup.el). */
1641 { "-nbi", "--no-bitmap-icon", 10, 0 },
1642 { "-bg", "--background-color", 10, 1 },
1643 { "-background", 0, 10, 1 },
1644 { "-fg", "--foreground-color", 10, 1 },
1645 { "-foreground", 0, 10, 1 },
1646 { "-bd", "--border-color", 10, 1 },
1647 { "-bw", "--border-width", 10, 1 },
1648 { "-ib", "--internal-border", 10, 1 },
1649 { "-ms", "--mouse-color", 10, 1 },
1650 { "-cr", "--cursor-color", 10, 1 },
1651 { "-fn", "--font", 10, 1 },
1652 { "-font", 0, 10, 1 },
1653 { "-fs", "--fullscreen", 10, 0 },
1654 { "-fw", "--fullwidth", 10, 0 },
1655 { "-fh", "--fullheight", 10, 0 },
1656 { "-mm", "--maximized", 10, 0 },
1657 { "-g", "--geometry", 10, 1 },
1658 { "-geometry", 0, 10, 1 },
1659 { "-T", "--title", 10, 1 },
1660 { "-title", 0, 10, 1 },
1661 { "-name", "--name", 10, 1 },
1662 { "-xrm", "--xrm", 10, 1 },
1663 { "-parent-id", "--parent-id", 10, 1 },
1664 { "-r", "--reverse-video", 5, 0 },
1666 { "-reverse", 0, 5, 0 },
1667 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1668 { "-vb", "--vertical-scroll-bars", 5, 0 },
1669 { "-color", "--color", 5, 0},
1670 { "-no-splash", "--no-splash", 3, 0 },
1671 { "-no-desktop", "--no-desktop", 3, 0 },
1673 { "-NSAutoLaunch", 0, 5, 1 },
1674 { "-NXAutoLaunch", 0, 5, 1 },
1675 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1676 { "-_NSMachLaunch", 0, 85, 1 },
1677 { "-MachLaunch", 0, 85, 1 },
1678 { "-macosx", 0, 85, 0 },
1679 { "-NSHost", 0, 85, 1 },
1681 /* These have the same priority as ordinary file name args,
1682 so they are not reordered with respect to those. */
1683 { "-L", "--directory", 0, 1 },
1684 { "-directory", 0, 0, 1 },
1685 { "-l", "--load", 0, 1 },
1686 { "-load", 0, 0, 1 },
1687 /* This has no longname, because using --scriptload confuses sort_args,
1688 because then the --script long option seems to match twice; ie
1689 you can't have a long option which is a prefix of another long
1690 option. In any case, this is entirely an internal option. */
1691 { "-scriptload", NULL
, 0, 1 },
1692 { "-f", "--funcall", 0, 1 },
1693 { "-funcall", 0, 0, 1 },
1694 { "-eval", "--eval", 0, 1 },
1695 { "-execute", "--execute", 0, 1 },
1696 { "-find-file", "--find-file", 0, 1 },
1697 { "-visit", "--visit", 0, 1 },
1698 { "-file", "--file", 0, 1 },
1699 { "-insert", "--insert", 0, 1 },
1701 { "-NXOpen", 0, 0, 1 },
1702 { "-NXOpenTemp", 0, 0, 1 },
1703 { "-NSOpen", 0, 0, 1 },
1704 { "-NSOpenTemp", 0, 0, 1 },
1705 { "-GSFilePath", 0, 0, 1 },
1707 /* This should be processed after ordinary file name args and the like. */
1708 { "-kill", "--kill", -10, 0 },
1711 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1712 so that the highest priority ones come first.
1713 Do not change the order of elements of equal priority.
1714 If an option takes an argument, keep it and its argument together.
1716 If an option that takes no argument appears more
1717 than once, eliminate all but one copy of it. */
1720 sort_args (int argc
, char **argv
)
1722 char **new = xmalloc (argc
* sizeof *new);
1723 /* For each element of argv,
1724 the corresponding element of options is:
1725 0 for an option that takes no arguments,
1726 1 for an option that takes one argument, etc.
1727 -1 for an ordinary non-option argument. */
1728 int *options
= xnmalloc (argc
, sizeof *options
);
1729 int *priority
= xnmalloc (argc
, sizeof *priority
);
1731 int incoming_used
= 1;
1735 /* Categorize all the options,
1736 and figure out which argv elts are option arguments. */
1737 for (from
= 1; from
< argc
; from
++)
1741 if (argv
[from
][0] == '-')
1745 /* If we have found "--", don't consider
1746 any more arguments as options. */
1747 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1749 /* Leave the "--", and everything following it, at the end. */
1750 for (; from
< argc
; from
++)
1752 priority
[from
] = -100;
1758 /* Look for a match with a known old-fashioned option. */
1759 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1760 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1762 options
[from
] = standard_args
[i
].nargs
;
1763 priority
[from
] = standard_args
[i
].priority
;
1764 if (from
+ standard_args
[i
].nargs
>= argc
)
1765 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1766 from
+= standard_args
[i
].nargs
;
1770 /* Look for a match with a known long option.
1771 MATCH is -1 if no match so far, -2 if two or more matches so far,
1772 >= 0 (the table index of the match) if just one match so far. */
1773 if (argv
[from
][1] == '-')
1775 char const *equals
= strchr (argv
[from
], '=');
1777 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1782 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1783 if (standard_args
[i
].longname
1784 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1793 /* If we found exactly one match, use that. */
1796 options
[from
] = standard_args
[match
].nargs
;
1797 priority
[from
] = standard_args
[match
].priority
;
1798 /* If --OPTION=VALUE syntax is used,
1799 this option uses just one argv element. */
1802 if (from
+ options
[from
] >= argc
)
1803 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1804 from
+= options
[from
];
1806 /* FIXME When match < 0, shouldn't there be some error,
1807 or at least indication to the user that there was a
1814 /* Copy the arguments, in order of decreasing priority, to NEW. */
1816 while (incoming_used
< argc
)
1819 int best_priority
= -9999;
1821 /* Find the highest priority remaining option.
1822 If several have equal priority, take the first of them. */
1823 for (from
= 1; from
< argc
; from
++)
1825 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1827 best_priority
= priority
[from
];
1830 /* Skip option arguments--they are tied to the options. */
1831 if (options
[from
] > 0)
1832 from
+= options
[from
];
1838 /* Copy the highest priority remaining option, with its args, to NEW.
1839 Unless it is a duplicate of the previous one. */
1840 if (! (options
[best
] == 0
1841 && ! strcmp (new[to
- 1], argv
[best
])))
1843 new[to
++] = argv
[best
];
1844 for (i
= 0; i
< options
[best
]; i
++)
1845 new[to
++] = argv
[best
+ i
+ 1];
1848 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1850 /* Clear out this option in ARGV. */
1852 for (i
= 0; i
< options
[best
]; i
++)
1853 argv
[best
+ i
+ 1] = 0;
1856 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1860 memcpy (argv
, new, sizeof (char *) * argc
);
1867 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1868 doc
: /* Exit the Emacs job and kill it.
1869 If ARG is an integer, return ARG as the exit program code.
1870 If ARG is a string, stuff it as keyboard input.
1872 This function is called upon receipt of the signals SIGTERM
1873 or SIGHUP, and upon SIGINT in batch mode.
1875 The value of `kill-emacs-hook', if not void,
1876 is a list of functions (of no args),
1877 all of which are called before Emacs is actually killed. */)
1880 struct gcpro gcpro1
;
1888 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1890 waiting_for_input
= 0;
1891 Frun_hooks (1, &Qkill_emacs_hook
);
1894 #ifdef HAVE_X_WINDOWS
1895 /* Transfer any clipboards we own to the clipboard manager. */
1896 x_clipboard_manager_save_all ();
1899 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1902 ns_release_autorelease_pool (ns_pool
);
1905 /* If we have an auto-save list file,
1906 kill it because we are exiting Emacs deliberately (not crashing).
1907 Do it after shut_down_emacs, which does an auto-save. */
1908 if (STRINGP (Vauto_save_list_file_name
))
1910 Lisp_Object listfile
;
1911 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1912 unlink (SSDATA (listfile
));
1916 exit_code
= (XINT (arg
) < 0
1917 ? XINT (arg
) | INT_MIN
1918 : XINT (arg
) & INT_MAX
);
1920 exit_code
= EXIT_SUCCESS
;
1925 /* Perform an orderly shutdown of Emacs. Autosave any modified
1926 buffers, kill any child processes, clean up the terminal modes (if
1927 we're in the foreground), and other stuff like that. Don't perform
1928 any redisplay; this may be called when Emacs is shutting down in
1929 the background, or after its X connection has died.
1931 If SIG is a signal number, print a message for it.
1933 This is called by fatal signal handlers, X protocol error handlers,
1937 shut_down_emacs (int sig
, Lisp_Object stuff
)
1939 /* Prevent running of hooks from now on. */
1942 /* Don't update display from now on. */
1943 Vinhibit_redisplay
= Qt
;
1945 /* If we are controlling the terminal, reset terminal modes. */
1948 pid_t pgrp
= getpgrp ();
1949 pid_t tpgrp
= tcgetpgrp (0);
1950 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1952 reset_all_sys_modes ();
1953 if (sig
&& sig
!= SIGTERM
)
1955 static char const format
[] = "Fatal error %d: ";
1956 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1957 int buflen
= sprintf (buf
, format
, sig
);
1958 char const *sig_desc
= safe_strsignal (sig
);
1959 emacs_write (STDERR_FILENO
, buf
, buflen
);
1960 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1966 reset_all_sys_modes ();
1969 stuff_buffered_input (stuff
);
1971 inhibit_sentinels
= 1;
1972 kill_buffer_processes (Qnil
);
1973 Fdo_auto_save (Qt
, Qnil
);
1975 #ifdef CLASH_DETECTION
1976 unlock_all_files ();
1979 /* There is a tendency for a SIGIO signal to arrive within exit,
1980 and cause a SIGHUP because the input descriptor is already closed. */
1984 /* Do this only if terminating normally, we want glyph matrices
1985 etc. in a core dump. */
1986 if (sig
== 0 || sig
== SIGTERM
)
1988 check_glyph_memory ();
1989 check_message_stack ();
1997 ns_term_shutdown (sig
);
2001 xml_cleanup_parser ();
2015 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2016 doc
: /* Dump current state of Emacs into executable file FILENAME.
2017 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2018 This is used in the file `loadup.el' when building Emacs.
2020 You must run Emacs in batch mode in order to dump it. */)
2021 (Lisp_Object filename
, Lisp_Object symfile
)
2025 ptrdiff_t count
= SPECPDL_INDEX ();
2029 if (! noninteractive
)
2030 error ("Dumping Emacs works only in batch mode");
2034 /* Warn if the gap between BSS end and heap start is larger than this. */
2035 # define MAX_HEAP_BSS_DIFF (1024*1024)
2037 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2039 fprintf (stderr
, "**************************************************\n");
2040 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2041 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2043 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2044 fprintf (stderr
, "fail because of this. See the section about\n");
2045 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2046 fprintf (stderr
, "**************************************************\n");
2048 #endif /* GNU_LINUX */
2050 /* Bind `command-line-processed' to nil before dumping,
2051 so that the dumped Emacs will process its command line
2052 and set up to work with X windows if appropriate. */
2053 symbol
= intern ("command-line-processed");
2054 specbind (symbol
, Qnil
);
2056 CHECK_STRING (filename
);
2057 filename
= Fexpand_file_name (filename
, Qnil
);
2058 filename
= ENCODE_FILE (filename
);
2059 if (!NILP (symfile
))
2061 CHECK_STRING (symfile
);
2062 if (SCHARS (symfile
))
2064 symfile
= Fexpand_file_name (symfile
, Qnil
);
2065 symfile
= ENCODE_FILE (symfile
);
2070 Vpurify_flag
= Qnil
;
2073 set_time_zone_rule (dump_tz
);
2074 #ifndef LOCALTIME_CACHE
2075 /* Force a tz reload, since set_time_zone_rule doesn't. */
2081 /* Tell malloc where start of impure now is. */
2082 /* Also arrange for warnings when nearly out of space. */
2083 #ifndef SYSTEM_MALLOC
2085 /* On Windows, this was done before dumping, and that once suffices.
2086 Meanwhile, my_edata is not valid on Windows. */
2088 extern char my_edata
[];
2089 memory_warnings (my_edata
, malloc_warning
);
2091 #endif /* not WINDOWSNT */
2092 #endif /* not SYSTEM_MALLOC */
2093 #ifdef DOUG_LEA_MALLOC
2094 malloc_state_ptr
= malloc_get_state ();
2097 #ifdef USE_MMAP_FOR_BUFFERS
2100 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2101 #ifdef USE_MMAP_FOR_BUFFERS
2104 #ifdef DOUG_LEA_MALLOC
2105 free (malloc_state_ptr
);
2109 Vlibrary_cache
= Qnil
;
2111 #ifdef HAVE_WINDOW_SYSTEM
2112 reset_image_types ();
2117 return unbind_to (count
, Qnil
);
2120 #endif /* not CANNOT_DUMP */
2123 /* Recover from setlocale (LC_ALL, ""). */
2127 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2128 so that numbers are read and printed properly for Emacs Lisp. */
2129 setlocale (LC_NUMERIC
, "C");
2132 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2135 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2137 if (! EQ (*plocale
, desired_locale
))
2139 *plocale
= desired_locale
;
2140 setlocale (category
, (STRINGP (desired_locale
)
2141 ? SSDATA (desired_locale
)
2146 /* Set system time locale to match Vsystem_time_locale, if possible. */
2148 synchronize_system_time_locale (void)
2150 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2151 Vsystem_time_locale
);
2154 /* Set system messages locale to match Vsystem_messages_locale, if
2157 synchronize_system_messages_locale (void)
2160 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2161 Vsystem_messages_locale
);
2164 #endif /* HAVE_SETLOCALE */
2168 decode_env_path (const char *evarname
, const char *defalt
)
2170 const char *path
, *p
;
2171 Lisp_Object lpath
, element
, tem
;
2174 const char *emacs_dir
= egetenv ("emacs_dir");
2175 static const char *emacs_dir_env
= "%emacs_dir%/";
2176 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2179 /* It's okay to use getenv here, because this function is only used
2180 to initialize variables when Emacs starts up, and isn't called
2183 path
= getenv (evarname
);
2194 /* Ensure values from the environment use the proper directory separator. */
2197 char *path_copy
= alloca (strlen (path
) + 1);
2198 strcpy (path_copy
, path
);
2199 dostounix_filename (path_copy
, 0);
2206 p
= strchr (path
, SEPCHAR
);
2208 p
= path
+ strlen (path
);
2209 element
= (p
- path
? make_string (path
, p
- path
)
2210 : build_string ("."));
2212 /* Relative file names in the default path are interpreted as
2213 being relative to $emacs_dir. */
2214 if (emacs_dir
&& defaulted
2215 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2216 element
= Fexpand_file_name (Fsubstring (element
,
2217 make_number (emacs_dir_len
),
2219 build_string (emacs_dir
));
2222 /* Add /: to the front of the name
2223 if it would otherwise be treated as magic. */
2224 tem
= Ffind_file_name_handler (element
, Qt
);
2226 /* However, if the handler says "I'm safe",
2227 don't bother adding /:. */
2231 prop
= Fget (tem
, intern ("safe-magic"));
2237 element
= concat2 (build_string ("/:"), element
);
2239 lpath
= Fcons (element
, lpath
);
2245 return Fnreverse (lpath
);
2248 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2249 doc
: /* Return non-nil if the current emacs process is a daemon.
2250 If the daemon was given a name argument, return that name. */)
2255 return build_string (daemon_name
);
2262 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2263 doc
: /* Mark the Emacs daemon as being initialized.
2264 This finishes the daemonization process by doing the other half of detaching
2265 from the parent process and its tty file descriptors. */)
2272 error ("This function can only be called if emacs is run as a daemon");
2274 if (daemon_pipe
[1] < 0)
2275 error ("The daemon has already been initialized");
2277 if (NILP (Vafter_init_time
))
2278 error ("This function can only be called after loading the init files");
2280 /* Get rid of stdin, stdout and stderr. */
2281 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2283 err
|= dup2 (nfd
, 0) < 0;
2284 err
|= dup2 (nfd
, 1) < 0;
2285 err
|= dup2 (nfd
, 2) < 0;
2286 err
|= emacs_close (nfd
) != 0;
2288 /* Closing the pipe will notify the parent that it can exit.
2289 FIXME: In case some other process inherited the pipe, closing it here
2290 won't notify the parent because it's still open elsewhere, so we
2291 additionally send a byte, just to make sure the parent really exits.
2292 Instead, we should probably close the pipe in start-process and
2293 call-process to make sure the pipe is never inherited by
2295 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2296 err
|= emacs_close (daemon_pipe
[1]) != 0;
2297 /* Set it to an invalid value so we know we've already run this function. */
2298 daemon_pipe
[1] = -1;
2301 error ("I/O error during daemon initialization");
2306 syms_of_emacs (void)
2308 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2309 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2310 DEFSYM (Qkill_emacs
, "kill-emacs");
2311 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2314 defsubr (&Sdump_emacs
);
2317 defsubr (&Skill_emacs
);
2319 defsubr (&Sinvocation_name
);
2320 defsubr (&Sinvocation_directory
);
2321 defsubr (&Sdaemonp
);
2322 defsubr (&Sdaemon_initialized
);
2324 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2325 doc
: /* Args passed by shell to Emacs, as a list of strings.
2326 Many arguments are deleted from the list as they are processed. */);
2328 DEFVAR_LISP ("system-type", Vsystem_type
,
2329 doc
: /* The value is a symbol indicating the type of operating system you are using.
2331 `gnu' compiled for a GNU Hurd system.
2332 `gnu/linux' compiled for a GNU/Linux system.
2333 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2334 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2335 `ms-dos' compiled as an MS-DOS application.
2336 `windows-nt' compiled as a native W32 application.
2337 `cygwin' compiled using the Cygwin library.
2338 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2339 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2340 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2341 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2343 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2344 doc
: /* Value is string indicating configuration Emacs was built for.
2345 On MS-Windows, the value reflects the OS flavor and version on which
2346 Emacs is running. */);
2347 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2349 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2350 doc
: /* String containing the configuration options Emacs was built with. */);
2351 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2353 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2354 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2356 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2357 doc
: /* Hook run when `kill-emacs' is called.
2358 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2359 in other similar situations), functions placed on this hook should not
2360 expect to be able to interact with the user. To ask for confirmation,
2361 see `kill-emacs-query-functions' instead.
2363 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2364 `noninteractive' was non-nil. */);
2365 Vkill_emacs_hook
= Qnil
;
2367 DEFVAR_LISP ("path-separator", Vpath_separator
,
2368 doc
: /* String containing the character that separates directories in
2369 search paths, such as PATH and other similar environment variables. */);
2372 Vpath_separator
= make_string (&c
, 1);
2375 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2376 doc
: /* The program name that was used to run Emacs.
2377 Any directory names are omitted. */);
2379 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2380 doc
: /* The directory in which the Emacs executable was found, to run it.
2381 The value is nil if that directory's name is not known. */);
2383 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2384 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2385 In an installed Emacs, this is normally nil. It is non-nil if
2386 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2387 within the variable `invocation-directory' or its parent. For example,
2388 this is the case when running an uninstalled Emacs executable from its
2389 build directory. */);
2390 Vinstallation_directory
= Qnil
;
2392 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2393 doc
: /* System locale for messages. */);
2394 Vsystem_messages_locale
= Qnil
;
2396 DEFVAR_LISP ("previous-system-messages-locale",
2397 Vprevious_system_messages_locale
,
2398 doc
: /* Most recently used system locale for messages. */);
2399 Vprevious_system_messages_locale
= Qnil
;
2401 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2402 doc
: /* System locale for time. */);
2403 Vsystem_time_locale
= Qnil
;
2405 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2406 doc
: /* Most recently used system locale for time. */);
2407 Vprevious_system_time_locale
= Qnil
;
2409 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2410 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2411 Vbefore_init_time
= Qnil
;
2413 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2414 doc
: /* Value of `current-time' after loading the init files.
2415 This is nil during initialization. */);
2416 Vafter_init_time
= Qnil
;
2418 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2419 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2420 inhibit_x_resources
= 0;
2422 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2423 doc
: /* Short copyright string for this version of Emacs. */);
2424 Vemacs_copyright
= build_string (emacs_copyright
);
2426 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2427 doc
: /* Version numbers of this version of Emacs. */);
2428 Vemacs_version
= build_string (emacs_version
);
2430 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2431 doc
: /* Alist of dynamic libraries vs external files implementing them.
2432 Each element is a list (LIBRARY FILE...), where the car is a symbol
2433 representing a supported external library, and the rest are strings giving
2434 alternate filenames for that library.
2436 Emacs tries to load the library from the files in the order they appear on
2437 the list; if none is loaded, the running session of Emacs won't have access
2440 Note that image types `pbm' and `xbm' do not need entries in this variable
2441 because they do not depend on external libraries and are always available.
2443 Also note that this is not a generic facility for accessing external
2444 libraries; only those already known by Emacs will be loaded. */);
2445 Vdynamic_library_alist
= Qnil
;
2446 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2449 Vlibrary_cache
= Qnil
;
2450 staticpro (&Vlibrary_cache
);
2453 /* Make sure IS_DAEMON starts up as false. */