Merge from emacs--devo--0
[bpt/emacs.git] / src / emacs.c
1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Emacs.
7
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, or (at your option)
11 any later version.
12
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.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
22
23
24 #include <config.h>
25 #include <signal.h>
26 #include <errno.h>
27 #include <stdio.h>
28
29 #include <sys/types.h>
30 #include <sys/file.h>
31
32 #ifdef VMS
33 #include <ssdef.h>
34 #endif
35
36 #ifdef HAVE_UNISTD_H
37 #include <unistd.h>
38 #endif
39
40 #ifdef BSD_SYSTEM
41 #include <sys/ioctl.h>
42 #endif
43
44 #ifdef WINDOWSNT
45 #include <fcntl.h>
46 #include <windows.h> /* just for w32.h */
47 #include "w32.h"
48 #include "w32heap.h" /* for prototype of sbrk */
49 #endif
50
51 #include "lisp.h"
52 #include "commands.h"
53 #include "intervals.h"
54 #include "buffer.h"
55 #include "window.h"
56
57 #include "systty.h"
58 #include "blockinput.h"
59 #include "syssignal.h"
60 #include "process.h"
61 #include "frame.h"
62 #include "termhooks.h"
63 #include "keyboard.h"
64 #include "keymap.h"
65
66 #ifdef HAVE_SETLOCALE
67 #include <locale.h>
68 #endif
69
70 #ifdef HAVE_SETRLIMIT
71 #include <sys/time.h>
72 #include <sys/resource.h>
73 #endif
74
75 #ifdef HAVE_PERSONALITY_LINUX32
76 #include <sys/personality.h>
77 #endif
78
79 #ifndef O_RDWR
80 #define O_RDWR 2
81 #endif
82
83 #ifdef HAVE_SETPGID
84 #if !defined (USG) || defined (BSD_PGRPS)
85 #undef setpgrp
86 #define setpgrp setpgid
87 #endif
88 #endif
89
90 extern void malloc_warning P_ ((char *));
91 extern void set_time_zone_rule P_ ((char *));
92 #ifdef HAVE_INDEX
93 extern char *index P_ ((const char *, int));
94 #endif
95
96 /* Make these values available in GDB, which doesn't see macros. */
97
98 #ifdef USE_LSB_TAG
99 int gdb_use_lsb = 1;
100 #else
101 int gdb_use_lsb = 0;
102 #endif
103 #ifdef NO_UNION_TYPE
104 int gdb_use_union = 0;
105 #else
106 int gdb_use_union = 1;
107 #endif
108 EMACS_INT gdb_valbits = VALBITS;
109 EMACS_INT gdb_gctypebits = GCTYPEBITS;
110 #ifdef DATA_SEG_BITS
111 EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
112 #else
113 EMACS_INT gdb_data_seg_bits = 0;
114 #endif
115 EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
116 EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG;
117 /* GDB might say "No enum type named pvec_type" if we don't have at
118 least one symbol with that type, and then xbacktrace could fail. */
119 enum pvec_type gdb_pvec_type = PVEC_TYPE_MASK;
120
121 /* Command line args from shell, as list of strings. */
122 Lisp_Object Vcommand_line_args;
123
124 /* The name under which Emacs was invoked, with any leading directory
125 names discarded. */
126 Lisp_Object Vinvocation_name;
127
128 /* The directory name from which Emacs was invoked. */
129 Lisp_Object Vinvocation_directory;
130
131 /* The directory name in which to find subdirs such as lisp and etc.
132 nil means get them only from PATH_LOADSEARCH. */
133 Lisp_Object Vinstallation_directory;
134
135 /* Hook run by `kill-emacs' before it does really anything. */
136 Lisp_Object Vkill_emacs_hook;
137
138 /* Empty lisp strings. To avoid having to build any others. */
139 Lisp_Object empty_unibyte_string, empty_multibyte_string;
140
141 /* Search path separator. */
142 Lisp_Object Vpath_separator;
143
144 /* Set nonzero after Emacs has started up the first time.
145 Prevents reinitialization of the Lisp world and keymaps
146 on subsequent starts. */
147 int initialized;
148
149 #ifdef DOUG_LEA_MALLOC
150 /* Preserves a pointer to the memory allocated that copies that
151 static data inside glibc's malloc. */
152 void *malloc_state_ptr;
153 /* From glibc, a routine that returns a copy of the malloc internal state. */
154 extern void *malloc_get_state ();
155 /* From glibc, a routine that overwrites the malloc internal state. */
156 extern int malloc_set_state ();
157 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
158 dumping. Used to work around a bug in glibc's malloc. */
159 int malloc_using_checking;
160 #endif
161
162 /* Variable whose value is symbol giving operating system type. */
163 Lisp_Object Vsystem_type;
164
165 /* Variable whose value is string giving configuration built for. */
166 Lisp_Object Vsystem_configuration;
167
168 /* Variable whose value is string giving configuration options,
169 for use when reporting bugs. */
170 Lisp_Object Vsystem_configuration_options;
171
172 Lisp_Object Qfile_name_handler_alist;
173
174 /* Current and previous system locales for messages and time. */
175 Lisp_Object Vsystem_messages_locale;
176 Lisp_Object Vprevious_system_messages_locale;
177 Lisp_Object Vsystem_time_locale;
178 Lisp_Object Vprevious_system_time_locale;
179
180 /* If non-zero, emacs should not attempt to use a window-specific code,
181 but instead should use the virtual terminal under which it was started. */
182 int inhibit_window_system;
183
184 /* If nonzero, set Emacs to run at this priority. This is also used
185 in child_setup and sys_suspend to make sure subshells run at normal
186 priority; those functions have their own extern declaration. */
187 EMACS_INT emacs_priority;
188
189 /* If non-zero, a filter or a sentinel is running. Tested to save the match
190 data on the first attempt to change it inside asynchronous code. */
191 int running_asynch_code;
192
193 #ifdef BSD_PGRPS
194 /* See sysdep.c. */
195 extern int inherited_pgroup;
196 #endif
197
198 #ifdef HAVE_X_WINDOWS
199 /* If non-zero, -d was specified, meaning we're using some window system. */
200 int display_arg;
201 #endif
202
203 /* An address near the bottom of the stack.
204 Tells GC how to save a copy of the stack. */
205 char *stack_bottom;
206
207 /* The address where the heap starts (from the first sbrk (0) call). */
208 static void *my_heap_start;
209
210 /* The gap between BSS end and heap start as far as we can tell. */
211 static unsigned long heap_bss_diff;
212
213 /* If the gap between BSS end and heap start is larger than this we try to
214 work around it, and if that fails, output a warning in dump-emacs. */
215 #define MAX_HEAP_BSS_DIFF (1024*1024)
216
217
218 #ifdef HAVE_WINDOW_SYSTEM
219 extern Lisp_Object Vinitial_window_system;
220 #endif /* HAVE_WINDOW_SYSTEM */
221
222 extern Lisp_Object Vauto_save_list_file_name;
223
224 extern Lisp_Object Vinhibit_redisplay;
225
226 #ifdef USG_SHARED_LIBRARIES
227 /* If nonzero, this is the place to put the end of the writable segment
228 at startup. */
229
230 unsigned int bss_end = 0;
231 #endif
232
233 /* Nonzero means running Emacs without interactive terminal. */
234
235 int noninteractive;
236
237 /* Value of Lisp variable `noninteractive'.
238 Normally same as C variable `noninteractive'
239 but nothing terrible happens if user sets this one. */
240
241 int noninteractive1;
242
243 /* Save argv and argc. */
244 char **initial_argv;
245 int initial_argc;
246
247 static void sort_args ();
248 void syms_of_emacs ();
249
250 /* MSVC needs each string be shorter than 2048 bytes, so the usage
251 strings below are split to not overflow this limit. */
252 #define USAGE1 "\
253 Usage: %s [OPTION-OR-FILENAME]...\n\
254 \n\
255 Run Emacs, the extensible, customizable, self-documenting real-time\n\
256 display editor. The recommended way to start Emacs for normal editing\n\
257 is with no options at all.\n\
258 \n\
259 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
260 read the main documentation for these command-line arguments.\n\
261 \n\
262 Initialization options:\n\
263 \n\
264 --batch do not do interactive display; implies -q\n\
265 --debug-init enable Emacs Lisp debugger for init file\n\
266 --display, -d DISPLAY use X server DISPLAY\n\
267 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
268 --no-desktop do not load a saved desktop\n\
269 --no-init-file, -q load neither ~/.emacs nor default.el\n\
270 --no-shared-memory, -nl do not use shared memory\n\
271 --no-site-file do not load site-start.el\n\
272 --no-splash do not display a splash screen on startup\n\
273 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
274 --quick, -Q equivalent to -q --no-site-file --no-splash\n\
275 --script FILE run FILE as an Emacs Lisp script\n\
276 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
277 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
278 --user, -u USER load ~USER/.emacs instead of your own\n\
279 \n%s"
280
281 #define USAGE2 "\
282 Action options:\n\
283 \n\
284 FILE visit FILE using find-file\n\
285 +LINE go to line LINE in next FILE\n\
286 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
287 --directory, -L DIR add DIR to variable load-path\n\
288 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
289 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
290 --file FILE visit FILE using find-file\n\
291 --find-file FILE visit FILE using find-file\n\
292 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
293 --insert FILE insert contents of FILE into current buffer\n\
294 --kill exit without asking for confirmation\n\
295 --load, -l FILE load Emacs Lisp FILE using the load function\n\
296 --visit FILE visit FILE using find-file\n\
297 \n"
298
299 #define USAGE3 "\
300 Display options:\n\
301 \n\
302 --background-color, -bg COLOR window background color\n\
303 --basic-display, -D disable many display features;\n\
304 used for debugging Emacs\n\
305 --border-color, -bd COLOR main border color\n\
306 --border-width, -bw WIDTH width of main border\n\
307 --color, --color=MODE override color mode for character terminals;\n\
308 MODE defaults to `auto', and can also\n\
309 be `never', `auto', `always',\n\
310 or a mode name like `ansi8'\n\
311 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
312 --font, -fn FONT default font; must be fixed-width\n\
313 --foreground-color, -fg COLOR window foreground color\n\
314 --fullheight, -fh make the first frame high as the screen\n\
315 --fullscreen, -fs make first frame fullscreen\n\
316 --fullwidth, -fw make the first frame wide as the screen\n\
317 --geometry, -g GEOMETRY window geometry\n\
318 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
319 --iconic start Emacs in iconified state\n\
320 --internal-border, -ib WIDTH width between text and main border\n\
321 --line-spacing, -lsp PIXELS additional space to put between lines\n\
322 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
323 --name NAME title for initial Emacs frame\n\
324 --no-blinking-cursor, -nbc disable blinking cursor\n\
325 --reverse-video, -r, -rv switch foreground and background\n\
326 --title, -T TITLE title for initial Emacs frame\n\
327 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
328 --xrm XRESOURCES set additional X resources\n\
329 --help display this help and exit\n\
330 --version output version information and exit\n\
331 \n"
332
333 #define USAGE4 "\
334 You can generally also specify long option names with a single -; for\n\
335 example, -batch as well as --batch. You can use any unambiguous\n\
336 abbreviation for a --option.\n\
337 \n\
338 Various environment variables and window system resources also affect\n\
339 Emacs' operation. See the main documentation.\n\
340 \n\
341 Report bugs to %s. First, please see the Bugs\n\
342 section of the Emacs manual or the file BUGS.\n"
343
344 \f
345 /* Signal code for the fatal signal that was received. */
346 int fatal_error_code;
347
348 /* Nonzero if handling a fatal error already. */
349 int fatal_error_in_progress;
350
351 /* If non-null, call this function from fatal_error_signal before
352 committing suicide. */
353
354 void (*fatal_error_signal_hook) P_ ((void));
355
356 #ifdef HAVE_GTK_AND_PTHREAD
357 /* When compiled with GTK and running under Gnome, multiple threads may be
358 created. Keep track of our main thread to make sure signals are delivered
359 to it (see syssignal.h). */
360
361 pthread_t main_thread;
362 #endif
363
364
365 /* Handle bus errors, invalid instruction, etc. */
366 SIGTYPE
367 fatal_error_signal (sig)
368 int sig;
369 {
370 SIGNAL_THREAD_CHECK (sig);
371 fatal_error_code = sig;
372 signal (sig, SIG_DFL);
373
374 TOTALLY_UNBLOCK_INPUT;
375
376 /* If fatal error occurs in code below, avoid infinite recursion. */
377 if (! fatal_error_in_progress)
378 {
379 fatal_error_in_progress = 1;
380
381 shut_down_emacs (sig, 0, Qnil);
382 }
383
384 #ifdef VMS
385 LIB$STOP (SS$_ABORT);
386 #else
387 /* Signal the same code; this time it will really be fatal.
388 Remember that since we're in a signal handler, the signal we're
389 going to send is probably blocked, so we have to unblock it if we
390 want to really receive it. */
391 #ifndef MSDOS
392 sigunblock (sigmask (fatal_error_code));
393 #endif
394
395 if (fatal_error_signal_hook)
396 fatal_error_signal_hook ();
397
398 kill (getpid (), fatal_error_code);
399 #endif /* not VMS */
400 }
401
402 #ifdef SIGDANGER
403
404 /* Handler for SIGDANGER. */
405 SIGTYPE
406 memory_warning_signal (sig)
407 int sig;
408 {
409 signal (sig, memory_warning_signal);
410 SIGNAL_THREAD_CHECK (sig);
411
412 malloc_warning ("Operating system warns that virtual memory is running low.\n");
413
414 /* It might be unsafe to call do_auto_save now. */
415 force_auto_save_soon ();
416 }
417 #endif
418
419 /* We define abort, rather than using it from the library,
420 so that GDB can return from a breakpoint here.
421 MSDOS has its own definition in msdos.c. */
422
423 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
424
425 #ifndef ABORT_RETURN_TYPE
426 #define ABORT_RETURN_TYPE void
427 #endif
428
429 ABORT_RETURN_TYPE
430 abort ()
431 {
432 kill (getpid (), SIGABRT);
433 /* This shouldn't be executed, but it prevents a warning. */
434 exit (1);
435 }
436 #endif
437
438 \f
439 /* Code for dealing with Lisp access to the Unix command line. */
440
441 static void
442 init_cmdargs (argc, argv, skip_args)
443 int argc;
444 char **argv;
445 int skip_args;
446 {
447 register int i;
448 Lisp_Object name, dir, tem;
449 int count = SPECPDL_INDEX ();
450 Lisp_Object raw_name;
451
452 initial_argv = argv;
453 initial_argc = argc;
454
455 raw_name = build_string (argv[0]);
456
457 /* Add /: to the front of the name
458 if it would otherwise be treated as magic. */
459 tem = Ffind_file_name_handler (raw_name, Qt);
460 if (! NILP (tem))
461 raw_name = concat2 (build_string ("/:"), raw_name);
462
463 Vinvocation_name = Ffile_name_nondirectory (raw_name);
464 Vinvocation_directory = Ffile_name_directory (raw_name);
465
466 /* If we got no directory in argv[0], search PATH to find where
467 Emacs actually came from. */
468 if (NILP (Vinvocation_directory))
469 {
470 Lisp_Object found;
471 int yes = openp (Vexec_path, Vinvocation_name,
472 Vexec_suffixes, &found, make_number (X_OK));
473 if (yes == 1)
474 {
475 /* Add /: to the front of the name
476 if it would otherwise be treated as magic. */
477 tem = Ffind_file_name_handler (found, Qt);
478 if (! NILP (tem))
479 found = concat2 (build_string ("/:"), found);
480 Vinvocation_directory = Ffile_name_directory (found);
481 }
482 }
483
484 if (!NILP (Vinvocation_directory)
485 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
486 /* Emacs was started with relative path, like ./emacs.
487 Make it absolute. */
488 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
489
490 Vinstallation_directory = Qnil;
491
492 if (!NILP (Vinvocation_directory))
493 {
494 dir = Vinvocation_directory;
495 name = Fexpand_file_name (Vinvocation_name, dir);
496 while (1)
497 {
498 Lisp_Object tem, lib_src_exists;
499 Lisp_Object etc_exists, info_exists;
500
501 /* See if dir contains subdirs for use by Emacs.
502 Check for the ones that would exist in a build directory,
503 not including lisp and info. */
504 tem = Fexpand_file_name (build_string ("lib-src"), dir);
505 lib_src_exists = Ffile_exists_p (tem);
506
507 #ifdef MSDOS
508 /* MSDOS installations frequently remove lib-src, but we still
509 must set installation-directory, or else info won't find
510 its files (it uses the value of installation-directory). */
511 tem = Fexpand_file_name (build_string ("info"), dir);
512 info_exists = Ffile_exists_p (tem);
513 #else
514 info_exists = Qnil;
515 #endif
516
517 if (!NILP (lib_src_exists) || !NILP (info_exists))
518 {
519 tem = Fexpand_file_name (build_string ("etc"), dir);
520 etc_exists = Ffile_exists_p (tem);
521 if (!NILP (etc_exists))
522 {
523 Vinstallation_directory
524 = Ffile_name_as_directory (dir);
525 break;
526 }
527 }
528
529 /* See if dir's parent contains those subdirs. */
530 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
531 lib_src_exists = Ffile_exists_p (tem);
532
533
534 #ifdef MSDOS
535 /* See the MSDOS commentary above. */
536 tem = Fexpand_file_name (build_string ("../info"), dir);
537 info_exists = Ffile_exists_p (tem);
538 #else
539 info_exists = Qnil;
540 #endif
541
542 if (!NILP (lib_src_exists) || !NILP (info_exists))
543 {
544 tem = Fexpand_file_name (build_string ("../etc"), dir);
545 etc_exists = Ffile_exists_p (tem);
546 if (!NILP (etc_exists))
547 {
548 tem = Fexpand_file_name (build_string (".."), dir);
549 Vinstallation_directory
550 = Ffile_name_as_directory (tem);
551 break;
552 }
553 }
554
555 /* If the Emacs executable is actually a link,
556 next try the dir that the link points into. */
557 tem = Ffile_symlink_p (name);
558 if (!NILP (tem))
559 {
560 name = Fexpand_file_name (tem, dir);
561 dir = Ffile_name_directory (name);
562 }
563 else
564 break;
565 }
566 }
567
568 Vcommand_line_args = Qnil;
569
570 for (i = argc - 1; i >= 0; i--)
571 {
572 if (i == 0 || i > skip_args)
573 /* For the moment, we keep arguments as is in unibyte strings.
574 They are decoded in the function command-line after we know
575 locale-coding-system. */
576 Vcommand_line_args
577 = Fcons (make_unibyte_string (argv[i], strlen (argv[i])),
578 Vcommand_line_args);
579 }
580
581 unbind_to (count, Qnil);
582 }
583
584 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
585 doc: /* Return the program name that was used to run Emacs.
586 Any directory names are omitted. */)
587 ()
588 {
589 return Fcopy_sequence (Vinvocation_name);
590 }
591
592 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
593 0, 0, 0,
594 doc: /* Return the directory name in which the Emacs executable was located. */)
595 ()
596 {
597 return Fcopy_sequence (Vinvocation_directory);
598 }
599
600 \f
601 #ifdef VMS
602 #ifdef LINK_CRTL_SHARE
603 #ifdef SHARABLE_LIB_BUG
604 extern noshare char **environ;
605 #endif /* SHARABLE_LIB_BUG */
606 #endif /* LINK_CRTL_SHARE */
607 #endif /* VMS */
608
609 #ifdef HAVE_TZSET
610 /* A valid but unlikely value for the TZ environment value.
611 It is OK (though a bit slower) if the user actually chooses this value. */
612 static char dump_tz[] = "UtC0";
613 #endif
614
615 #ifndef ORDINARY_LINK
616 /* We don't include crtbegin.o and crtend.o in the link,
617 so these functions and variables might be missed.
618 Provide dummy definitions to avoid error.
619 (We don't have any real constructors or destructors.) */
620 #ifdef __GNUC__
621 #ifndef GCC_CTORS_IN_LIBC
622 void __do_global_ctors ()
623 {}
624 void __do_global_ctors_aux ()
625 {}
626 void __do_global_dtors ()
627 {}
628 /* GNU/Linux has a bug in its library; avoid an error. */
629 #ifndef GNU_LINUX
630 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
631 #endif
632 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
633 #endif /* GCC_CTORS_IN_LIBC */
634 void __main ()
635 {}
636 #endif /* __GNUC__ */
637 #endif /* ORDINARY_LINK */
638
639 /* Test whether the next argument in ARGV matches SSTR or a prefix of
640 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
641 (the argument is supposed to have a value) store in *VALPTR either
642 the next argument or the portion of this one after the equal sign.
643 ARGV is read starting at position *SKIPPTR; this index is advanced
644 by the number of arguments used.
645
646 Too bad we can't just use getopt for all of this, but we don't have
647 enough information to do it right. */
648
649 static int
650 argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
651 char **argv;
652 int argc;
653 char *sstr;
654 char *lstr;
655 int minlen;
656 char **valptr;
657 int *skipptr;
658 {
659 char *p = NULL;
660 int arglen;
661 char *arg;
662
663 /* Don't access argv[argc]; give up in advance. */
664 if (argc <= *skipptr + 1)
665 return 0;
666
667 arg = argv[*skipptr+1];
668 if (arg == NULL)
669 return 0;
670 if (strcmp (arg, sstr) == 0)
671 {
672 if (valptr != NULL)
673 {
674 *valptr = argv[*skipptr+2];
675 *skipptr += 2;
676 }
677 else
678 *skipptr += 1;
679 return 1;
680 }
681 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
682 ? p - arg : strlen (arg));
683 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
684 return 0;
685 else if (valptr == NULL)
686 {
687 *skipptr += 1;
688 return 1;
689 }
690 else if (p != NULL)
691 {
692 *valptr = p+1;
693 *skipptr += 1;
694 return 1;
695 }
696 else if (argv[*skipptr+2] != NULL)
697 {
698 *valptr = argv[*skipptr+2];
699 *skipptr += 2;
700 return 1;
701 }
702 else
703 {
704 return 0;
705 }
706 }
707
708 #ifdef DOUG_LEA_MALLOC
709
710 /* malloc can be invoked even before main (e.g. by the dynamic
711 linker), so the dumped malloc state must be restored as early as
712 possible using this special hook. */
713
714 static void
715 malloc_initialize_hook ()
716 {
717 #ifndef USE_CRT_DLL
718 extern char **environ;
719 #endif
720
721 if (initialized)
722 {
723 if (!malloc_using_checking)
724 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
725 ignored if the heap to be restored was constructed without
726 malloc checking. Can't use unsetenv, since that calls malloc. */
727 {
728 char **p;
729
730 for (p = environ; p && *p; p++)
731 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
732 {
733 do
734 *p = p[1];
735 while (*++p);
736 break;
737 }
738 }
739
740 malloc_set_state (malloc_state_ptr);
741 #ifndef XMALLOC_OVERRUN_CHECK
742 free (malloc_state_ptr);
743 #endif
744 }
745 else
746 {
747 if (my_heap_start == 0)
748 my_heap_start = sbrk (0);
749 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
750 }
751 }
752
753 void (*__malloc_initialize_hook) () = malloc_initialize_hook;
754
755 #endif /* DOUG_LEA_MALLOC */
756
757
758 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
759 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
760
761 /* This function is used to determine an address to which bug report should
762 be sent. */
763
764 char *
765 bug_reporting_address ()
766 {
767 int count = 0;
768 Lisp_Object temp;
769 char *string;
770
771 temp = Fsymbol_value (intern ("emacs-version"));
772
773 /* When `emacs-version' is invalid, use normal address. */
774 if (!STRINGP(temp))
775 return REPORT_EMACS_BUG_ADDRESS;
776
777 string = SDATA (temp);
778
779 /* Count dots in `emacs-version'. */
780 while (*string)
781 {
782 if (*string == '.')
783 count++;
784 string++;
785 }
786
787 /* When `emacs-version' has at least three dots, it is development or
788 pretest version of Emacs. */
789 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
790 }
791
792 #ifdef USE_FONT_BACKEND
793 extern int enable_font_backend;
794 #endif /* USE_FONT_BACKEND */
795
796 /* ARGSUSED */
797 int
798 main (argc, argv
799 #ifdef VMS
800 , envp
801 #endif
802 )
803 int argc;
804 char **argv;
805 #ifdef VMS
806 char **envp;
807 #endif
808 {
809 #if GC_MARK_STACK
810 Lisp_Object dummy;
811 #endif
812 char stack_bottom_variable;
813 int do_initial_setlocale;
814 int skip_args = 0;
815 #ifndef USE_CRT_DLL
816 extern int errno;
817 #endif
818 #ifdef HAVE_SETRLIMIT
819 struct rlimit rlim;
820 #endif
821 int no_loadup = 0;
822 char *junk = 0;
823
824 #if GC_MARK_STACK
825 extern Lisp_Object *stack_base;
826 stack_base = &dummy;
827 #endif
828
829 if (!initialized)
830 {
831 extern char my_endbss[];
832 extern char *my_endbss_static;
833
834 if (my_heap_start == 0)
835 my_heap_start = sbrk (0);
836
837 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
838 }
839
840 #ifdef LINUX_SBRK_BUG
841 __sbrk (1);
842 #endif
843
844 #ifdef RUN_TIME_REMAP
845 if (initialized)
846 run_time_remap (argv[0]);
847 #endif
848
849 #ifdef MAC_OSX
850 if (!initialized)
851 unexec_init_emacs_zone ();
852 #endif
853
854 sort_args (argc, argv);
855 argc = 0;
856 while (argv[argc]) argc++;
857
858 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
859 /* We don't know the version number unless this is a dumped Emacs.
860 So ignore --version otherwise. */
861 && initialized)
862 {
863 Lisp_Object tem, tem2;
864 tem = Fsymbol_value (intern ("emacs-version"));
865 tem2 = Fsymbol_value (intern ("emacs-copyright"));
866 if (!STRINGP (tem))
867 {
868 fprintf (stderr, "Invalid value of `emacs-version'\n");
869 exit (1);
870 }
871 if (!STRINGP (tem2))
872 {
873 fprintf (stderr, "Invalid value of `emacs-copyright'\n");
874 exit (1);
875 }
876 else
877 {
878 printf ("GNU Emacs %s\n", SDATA (tem));
879 printf ("%s\n", SDATA(tem2));
880 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
881 printf ("You may redistribute copies of Emacs\n");
882 printf ("under the terms of the GNU General Public License.\n");
883 printf ("For more information about these matters, ");
884 printf ("see the file named COPYING.\n");
885 exit (0);
886 }
887 }
888
889 #ifdef HAVE_PERSONALITY_LINUX32
890 /* See if there is a gap between the end of BSS and the heap.
891 In that case, set personality and exec ourself again. */
892 if (!initialized
893 && (strcmp (argv[argc-1], "dump") == 0
894 || strcmp (argv[argc-1], "bootstrap") == 0)
895 && heap_bss_diff > MAX_HEAP_BSS_DIFF)
896 {
897 if (! getenv ("EMACS_HEAP_EXEC"))
898 {
899 /* Set this so we only do this once. */
900 putenv("EMACS_HEAP_EXEC=true");
901
902 /* A flag to turn off address randomization which is introduced
903 in linux kernel shipped with fedora core 4 */
904 #define ADD_NO_RANDOMIZE 0x0040000
905 personality (PER_LINUX32 | ADD_NO_RANDOMIZE);
906 #undef ADD_NO_RANDOMIZE
907
908 execvp (argv[0], argv);
909
910 /* If the exec fails, try to dump anyway. */
911 perror ("execvp");
912 }
913 }
914 #endif /* HAVE_PERSONALITY_LINUX32 */
915
916
917 /* Map in shared memory, if we are using that. */
918 #ifdef HAVE_SHM
919 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
920 {
921 map_in_data (0);
922 /* The shared memory was just restored, which clobbered this. */
923 skip_args = 1;
924 }
925 else
926 {
927 map_in_data (1);
928 /* The shared memory was just restored, which clobbered this. */
929 skip_args = 0;
930 }
931 #endif
932
933 #ifdef NeXT
934 {
935 extern int malloc_cookie;
936 /* This helps out unexnext.c. */
937 if (initialized)
938 if (malloc_jumpstart (malloc_cookie) != 0)
939 printf ("malloc jumpstart failed!\n");
940 }
941 #endif /* NeXT */
942
943 #ifdef MAC_OSX
944 /* Skip process serial number passed in the form -psn_x_y as
945 command-line argument. The WindowServer adds this option when
946 Emacs is invoked from the Finder or by the `open' command. In
947 these cases, the working directory becomes `/', so we change it
948 to the user's home directory. */
949 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
950 {
951 chdir (getenv ("HOME"));
952 skip_args++;
953 }
954 #endif /* MAC_OSX */
955
956 #ifdef VMS
957 /* If -map specified, map the data file in. */
958 {
959 char *file;
960 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args))
961 mapin_data (file);
962 }
963
964 #ifdef LINK_CRTL_SHARE
965 #ifdef SHARABLE_LIB_BUG
966 /* Bletcherous shared libraries! */
967 if (!stdin)
968 stdin = fdopen (0, "r");
969 if (!stdout)
970 stdout = fdopen (1, "w");
971 if (!stderr)
972 stderr = fdopen (2, "w");
973 if (!environ)
974 environ = envp;
975 #endif /* SHARABLE_LIB_BUG */
976 #endif /* LINK_CRTL_SHARE */
977 #endif /* VMS */
978
979 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
980 /* Extend the stack space available.
981 Don't do that if dumping, since some systems (e.g. DJGPP)
982 might define a smaller stack limit at that time. */
983 if (1
984 #ifndef CANNOT_DUMP
985 && (!noninteractive || initialized)
986 #endif
987 && !getrlimit (RLIMIT_STACK, &rlim))
988 {
989 long newlim;
990 extern size_t re_max_failures;
991 /* Approximate the amount regex.c needs per unit of re_max_failures. */
992 int ratio = 20 * sizeof (char *);
993 /* Then add 33% to cover the size of the smaller stacks that regex.c
994 successively allocates and discards, on its way to the maximum. */
995 ratio += ratio / 3;
996 /* Add in some extra to cover
997 what we're likely to use for other reasons. */
998 newlim = re_max_failures * ratio + 200000;
999 #ifdef __NetBSD__
1000 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
1001 stack allocation routine for new process that the allocation
1002 fails if stack limit is not on page boundary. So, round up the
1003 new limit to page boundary. */
1004 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
1005 #endif
1006 if (newlim > rlim.rlim_max)
1007 {
1008 newlim = rlim.rlim_max;
1009 /* Don't let regex.c overflow the stack we have. */
1010 re_max_failures = (newlim - 200000) / ratio;
1011 }
1012 if (rlim.rlim_cur < newlim)
1013 rlim.rlim_cur = newlim;
1014
1015 setrlimit (RLIMIT_STACK, &rlim);
1016 }
1017 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1018
1019 /* Record (approximately) where the stack begins. */
1020 stack_bottom = &stack_bottom_variable;
1021
1022 #ifdef USG_SHARED_LIBRARIES
1023 if (bss_end)
1024 brk ((void *)bss_end);
1025 #endif
1026
1027 clearerr (stdin);
1028
1029 #ifndef SYSTEM_MALLOC
1030 /* Arrange to get warning messages as memory fills up. */
1031 memory_warnings (0, malloc_warning);
1032
1033 /* Call malloc at least once, to run the initial __malloc_hook.
1034 Also call realloc and free for consistency. */
1035 free (realloc (malloc (4), 4));
1036
1037 # ifndef SYNC_INPUT
1038 /* Arrange to disable interrupt input inside malloc etc. */
1039 uninterrupt_malloc ();
1040 # endif /* not SYNC_INPUT */
1041 #endif /* not SYSTEM_MALLOC */
1042
1043 #ifdef HAVE_GTK_AND_PTHREAD
1044 main_thread = pthread_self ();
1045 #endif /* HAVE_GTK_AND_PTHREAD */
1046
1047 #if defined (MSDOS) || defined (WINDOWSNT)
1048 /* We do all file input/output as binary files. When we need to translate
1049 newlines, we do that manually. */
1050 _fmode = O_BINARY;
1051 #endif /* MSDOS || WINDOWSNT */
1052
1053 #ifdef MSDOS
1054 #if __DJGPP__ >= 2
1055 if (!isatty (fileno (stdin)))
1056 setmode (fileno (stdin), O_BINARY);
1057 if (!isatty (fileno (stdout)))
1058 {
1059 fflush (stdout);
1060 setmode (fileno (stdout), O_BINARY);
1061 }
1062 #else /* not __DJGPP__ >= 2 */
1063 (stdin)->_flag &= ~_IOTEXT;
1064 (stdout)->_flag &= ~_IOTEXT;
1065 (stderr)->_flag &= ~_IOTEXT;
1066 #endif /* not __DJGPP__ >= 2 */
1067 #endif /* MSDOS */
1068
1069 #ifdef SET_EMACS_PRIORITY
1070 if (emacs_priority)
1071 nice (emacs_priority);
1072 setuid (getuid ());
1073 #endif /* SET_EMACS_PRIORITY */
1074
1075 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1076 The build procedure uses this while dumping, to ensure that the
1077 dumped Emacs does not have its system locale tables initialized,
1078 as that might cause screwups when the dumped Emacs starts up. */
1079 {
1080 char *lc_all = getenv ("LC_ALL");
1081 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
1082 }
1083
1084 /* Set locale now, so that initial error messages are localized properly.
1085 fixup_locale must wait until later, since it builds strings. */
1086 if (do_initial_setlocale)
1087 setlocale (LC_ALL, "");
1088
1089 #ifdef EXTRA_INITIALIZE
1090 EXTRA_INITIALIZE;
1091 #endif
1092
1093 inhibit_window_system = 0;
1094
1095 /* Handle the -t switch, which specifies filename to use as terminal. */
1096 while (1)
1097 {
1098 char *term;
1099 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1100 {
1101 int result;
1102 emacs_close (0);
1103 emacs_close (1);
1104 result = emacs_open (term, O_RDWR, 0);
1105 if (result < 0)
1106 {
1107 char *errstring = strerror (errno);
1108 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1109 exit (1);
1110 }
1111 dup (0);
1112 if (! isatty (0))
1113 {
1114 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1115 exit (1);
1116 }
1117 fprintf (stderr, "Using %s\n", term);
1118 #ifdef HAVE_WINDOW_SYSTEM
1119 inhibit_window_system = 1; /* -t => -nw */
1120 #endif
1121 }
1122 else
1123 break;
1124 }
1125
1126 /* Command line option --no-windows is deprecated and thus not mentioned
1127 in the manual and usage informations. */
1128 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1129 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
1130 inhibit_window_system = 1;
1131
1132 /* Handle the -batch switch, which means don't do interactive display. */
1133 noninteractive = 0;
1134 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
1135 {
1136 noninteractive = 1;
1137 Vundo_outer_limit = Qnil;
1138 }
1139 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1140 {
1141 noninteractive = 1; /* Set batch mode. */
1142 /* Convert --script to --scriptload, un-skip it, and sort again
1143 so that it will be handled in proper sequence. */
1144 argv[skip_args - 1] = "-scriptload";
1145 skip_args -= 2;
1146 sort_args (argc, argv);
1147 }
1148
1149 /* Handle the --help option, which gives a usage message. */
1150 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
1151 {
1152 printf (USAGE1, argv[0], USAGE2);
1153 printf (USAGE3);
1154 printf (USAGE4, bug_reporting_address ());
1155 exit (0);
1156 }
1157
1158 if (! noninteractive)
1159 {
1160 #ifdef BSD_PGRPS
1161 if (initialized)
1162 {
1163 inherited_pgroup = EMACS_GETPGRP (0);
1164 setpgrp (0, getpid ());
1165 }
1166 #else
1167 #if defined (USG5) && defined (INTERRUPT_INPUT)
1168 setpgrp ();
1169 #endif
1170 #endif
1171 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1172 {
1173 extern void malloc_enable_thread P_ ((void));
1174
1175 malloc_enable_thread ();
1176 }
1177 #endif
1178 }
1179
1180 init_signals ();
1181
1182 /* Don't catch SIGHUP if dumping. */
1183 if (1
1184 #ifndef CANNOT_DUMP
1185 && initialized
1186 #endif
1187 )
1188 {
1189 sigblock (sigmask (SIGHUP));
1190 /* In --batch mode, don't catch SIGHUP if already ignored.
1191 That makes nohup work. */
1192 if (! noninteractive
1193 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1194 signal (SIGHUP, fatal_error_signal);
1195 sigunblock (sigmask (SIGHUP));
1196 }
1197
1198 if (
1199 #ifndef CANNOT_DUMP
1200 ! noninteractive || initialized
1201 #else
1202 1
1203 #endif
1204 )
1205 {
1206 /* Don't catch these signals in batch mode if dumping.
1207 On some machines, this sets static data that would make
1208 signal fail to work right when the dumped Emacs is run. */
1209 signal (SIGQUIT, fatal_error_signal);
1210 signal (SIGILL, fatal_error_signal);
1211 signal (SIGTRAP, fatal_error_signal);
1212 #ifdef SIGUSR1
1213 add_user_signal (SIGUSR1, "sigusr1");
1214 #endif
1215 #ifdef SIGUSR2
1216 add_user_signal (SIGUSR2, "sigusr2");
1217 #endif
1218 #ifdef SIGABRT
1219 signal (SIGABRT, fatal_error_signal);
1220 #endif
1221 #ifdef SIGHWE
1222 signal (SIGHWE, fatal_error_signal);
1223 #endif
1224 #ifdef SIGPRE
1225 signal (SIGPRE, fatal_error_signal);
1226 #endif
1227 #ifdef SIGORE
1228 signal (SIGORE, fatal_error_signal);
1229 #endif
1230 #ifdef SIGUME
1231 signal (SIGUME, fatal_error_signal);
1232 #endif
1233 #ifdef SIGDLK
1234 signal (SIGDLK, fatal_error_signal);
1235 #endif
1236 #ifdef SIGCPULIM
1237 signal (SIGCPULIM, fatal_error_signal);
1238 #endif
1239 #ifdef SIGIOT
1240 /* This is missing on some systems - OS/2, for example. */
1241 signal (SIGIOT, fatal_error_signal);
1242 #endif
1243 #ifdef SIGEMT
1244 signal (SIGEMT, fatal_error_signal);
1245 #endif
1246 signal (SIGFPE, fatal_error_signal);
1247 #ifdef SIGBUS
1248 signal (SIGBUS, fatal_error_signal);
1249 #endif
1250 signal (SIGSEGV, fatal_error_signal);
1251 #ifdef SIGSYS
1252 signal (SIGSYS, fatal_error_signal);
1253 #endif
1254 signal (SIGTERM, fatal_error_signal);
1255 #ifdef SIGXCPU
1256 signal (SIGXCPU, fatal_error_signal);
1257 #endif
1258 #ifdef SIGXFSZ
1259 signal (SIGXFSZ, fatal_error_signal);
1260 #endif /* SIGXFSZ */
1261
1262 #ifdef SIGDANGER
1263 /* This just means available memory is getting low. */
1264 signal (SIGDANGER, memory_warning_signal);
1265 #endif
1266
1267 #ifdef AIX
1268 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1269 signal (SIGXCPU, fatal_error_signal);
1270 #ifndef _I386
1271 signal (SIGIOINT, fatal_error_signal);
1272 #endif
1273 signal (SIGGRANT, fatal_error_signal);
1274 signal (SIGRETRACT, fatal_error_signal);
1275 signal (SIGSOUND, fatal_error_signal);
1276 signal (SIGMSG, fatal_error_signal);
1277 #endif /* AIX */
1278 }
1279
1280 noninteractive1 = noninteractive;
1281
1282 /* Perform basic initializations (not merely interning symbols). */
1283
1284 if (!initialized)
1285 {
1286 init_alloc_once ();
1287 init_obarray ();
1288 init_eval_once ();
1289 init_character_once ();
1290 init_charset_once ();
1291 init_coding_once ();
1292 init_syntax_once (); /* Create standard syntax table. */
1293 init_category_once (); /* Create standard category table. */
1294 /* Must be done before init_buffer. */
1295 init_casetab_once ();
1296 init_buffer_once (); /* Create buffer table and some buffers. */
1297 init_minibuf_once (); /* Create list of minibuffers. */
1298 /* Must precede init_window_once. */
1299
1300 /* Call syms_of_xfaces before init_window_once because that
1301 function creates Vterminal_frame. Termcap frames now use
1302 faces, and the face implementation uses some symbols as
1303 face names. */
1304 syms_of_xfaces ();
1305 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1306 be better to arrange things not to have this dependency. */
1307 syms_of_keymap ();
1308 /* Call syms_of_keyboard before init_window_once because
1309 keyboard sets up symbols that include some face names that
1310 the X support will want to use. This can happen when
1311 CANNOT_DUMP is defined. */
1312 syms_of_keyboard ();
1313
1314 #ifdef MAC_OS8
1315 /* init_window_once calls make_terminal_frame which on Mac OS
1316 creates a full-fledge output_mac type frame. This does not
1317 work correctly before syms_of_textprop, syms_of_macfns,
1318 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1319 syms_of_frame, mac_term_init, and init_keyboard have already
1320 been called. */
1321 syms_of_textprop ();
1322 syms_of_macfns ();
1323 syms_of_ccl ();
1324 syms_of_fontset ();
1325 syms_of_macterm ();
1326 syms_of_macmenu ();
1327 syms_of_macselect ();
1328 syms_of_search ();
1329 syms_of_frame ();
1330
1331 init_atimer ();
1332 mac_term_init (build_string ("Mac"), NULL, NULL);
1333 init_keyboard ();
1334 #endif
1335 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1336 syms_of_data ();
1337 syms_of_fileio ();
1338 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1339 syms_of_alloc ();
1340 /* Before syms_of_coding because it initializes Qcharsetp. */
1341 syms_of_charset ();
1342 /* Before init_window_once, because it sets up the
1343 Vcoding_system_hash_table. */
1344 syms_of_coding (); /* This should be after syms_of_fileio. */
1345
1346 init_window_once (); /* Init the window system. */
1347 init_fileio_once (); /* Must precede any path manipulation. */
1348 #ifdef HAVE_WINDOW_SYSTEM
1349 init_fringe_once (); /* Swap bitmaps if necessary. */
1350 #endif /* HAVE_WINDOW_SYSTEM */
1351 }
1352
1353 init_alloc ();
1354
1355 if (do_initial_setlocale)
1356 {
1357 fixup_locale ();
1358 Vsystem_messages_locale = Vprevious_system_messages_locale;
1359 Vsystem_time_locale = Vprevious_system_time_locale;
1360 }
1361
1362 init_eval ();
1363 init_data ();
1364 #ifdef CLASH_DETECTION
1365 init_filelock ();
1366 #endif
1367 init_atimer ();
1368 running_asynch_code = 0;
1369
1370 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1371 but not while dumping. */
1372 if (1)
1373 {
1374 int inhibit_unibyte = 0;
1375
1376 /* --multibyte overrides EMACS_UNIBYTE. */
1377 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
1378 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1379 /* Ignore EMACS_UNIBYTE before dumping. */
1380 || (!initialized && noninteractive))
1381 inhibit_unibyte = 1;
1382
1383 /* --unibyte requests that we set up to do everything with single-byte
1384 buffers and strings. We need to handle this before calling
1385 init_lread, init_editfns and other places that generate Lisp strings
1386 from text in the environment. */
1387 /* Actually this shouldn't be needed as of 20.4 in a generally
1388 unibyte environment. As handa says, environment values
1389 aren't now decoded; also existing buffers are now made
1390 unibyte during startup if .emacs sets unibyte. Tested with
1391 8-bit data in environment variables and /etc/passwd, setting
1392 unibyte and Latin-1 in .emacs. -- Dave Love */
1393 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1394 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1395 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1396 {
1397 Lisp_Object old_log_max;
1398 Lisp_Object symbol, tail;
1399
1400 symbol = intern ("default-enable-multibyte-characters");
1401 Fset (symbol, Qnil);
1402
1403 if (initialized)
1404 {
1405 /* Erase pre-dump messages in *Messages* now so no abort. */
1406 old_log_max = Vmessage_log_max;
1407 XSETFASTINT (Vmessage_log_max, 0);
1408 message_dolog ("", 0, 1, 0);
1409 Vmessage_log_max = old_log_max;
1410 }
1411
1412 for (tail = Vbuffer_alist; CONSP (tail);
1413 tail = XCDR (tail))
1414 {
1415 Lisp_Object buffer;
1416
1417 buffer = Fcdr (XCAR (tail));
1418 /* Make a multibyte buffer unibyte. */
1419 if (BUF_Z_BYTE (XBUFFER (buffer)) > BUF_Z (XBUFFER (buffer)))
1420 {
1421 struct buffer *current = current_buffer;
1422
1423 set_buffer_temp (XBUFFER (buffer));
1424 Fset_buffer_multibyte (Qnil);
1425 set_buffer_temp (current);
1426 }
1427 }
1428 }
1429 }
1430
1431 no_loadup
1432 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1433
1434 #ifdef USE_FONT_BACKEND
1435 enable_font_backend = 1;
1436 if (argmatch (argv, argc, "-enable-font-backend", "--enable-font-backend",
1437 4, NULL, &skip_args))
1438 enable_font_backend = 1;
1439 else if (argmatch (argv, argc,
1440 "-disable-font-backend", "--disable-font-backend",
1441 4, NULL, &skip_args))
1442 enable_font_backend = 0;
1443 #endif /* USE_FONT_BACKEND */
1444
1445 #ifdef HAVE_X_WINDOWS
1446 /* Stupid kludge to catch command-line display spec. We can't
1447 handle this argument entirely in window system dependent code
1448 because we don't even know which window system dependent code
1449 to run until we've recognized this argument. */
1450 {
1451 char *displayname = 0;
1452 int count_before = skip_args;
1453
1454 /* Skip any number of -d options, but only use the last one. */
1455 while (1)
1456 {
1457 int count_before_this = skip_args;
1458
1459 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1460 display_arg = 1;
1461 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1462 display_arg = 1;
1463 else
1464 break;
1465
1466 count_before = count_before_this;
1467 }
1468
1469 /* If we have the form --display=NAME,
1470 convert it into -d name.
1471 This requires inserting a new element into argv. */
1472 if (displayname != 0 && skip_args - count_before == 1)
1473 {
1474 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1475 int j;
1476
1477 for (j = 0; j < count_before + 1; j++)
1478 new[j] = argv[j];
1479 new[count_before + 1] = "-d";
1480 new[count_before + 2] = displayname;
1481 for (j = count_before + 2; j <argc; j++)
1482 new[j + 1] = argv[j];
1483 argv = new;
1484 argc++;
1485 }
1486 /* Change --display to -d, when its arg is separate. */
1487 else if (displayname != 0 && skip_args > count_before
1488 && argv[count_before + 1][1] == '-')
1489 argv[count_before + 1] = "-d";
1490
1491 /* Don't actually discard this arg. */
1492 skip_args = count_before;
1493 }
1494 #endif
1495
1496 /* argmatch must not be used after here,
1497 except when bulding temacs
1498 because the -d argument has not been skipped in skip_args. */
1499
1500 #ifdef MSDOS
1501 /* Call early 'cause init_environment needs it. */
1502 init_dosfns ();
1503 /* Set defaults for several environment variables. */
1504 if (initialized)
1505 init_environment (argc, argv, skip_args);
1506 else
1507 tzset ();
1508 #endif /* MSDOS */
1509
1510 #ifdef WINDOWSNT
1511 globals_of_w32 ();
1512 /* Initialize environment from registry settings. */
1513 init_environment (argv);
1514 init_ntproc (); /* must precede init_editfns. */
1515 #endif
1516
1517 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1518 if (initialized)
1519 init_mac_osx_environment ();
1520 #endif
1521
1522 /* egetenv is a pretty low-level facility, which may get called in
1523 many circumstances; it seems flimsy to put off initializing it
1524 until calling init_callproc. */
1525 set_initial_environment ();
1526 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1527 if this is not done. Do it after set_global_environment so that we
1528 don't pollute Vglobal_environment. */
1529 /* Setting LANG here will defeat the startup locale processing... */
1530 #ifdef AIX3_2
1531 putenv ("LANG=C");
1532 #endif
1533
1534 init_buffer (); /* Init default directory of main buffer. */
1535
1536 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1537 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1538
1539 if (initialized)
1540 {
1541 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1542 Lisp_Object old_log_max;
1543 old_log_max = Vmessage_log_max;
1544 XSETFASTINT (Vmessage_log_max, 0);
1545 message_dolog ("", 0, 1, 0);
1546 Vmessage_log_max = old_log_max;
1547 }
1548
1549 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1550 init_lread ();
1551
1552 /* Intern the names of all standard functions and variables;
1553 define standard keys. */
1554
1555 if (!initialized)
1556 {
1557 /* The basic levels of Lisp must come first. */
1558 /* And data must come first of all
1559 for the sake of symbols like error-message. */
1560 /* Called before init_window_once for Mac OS Classic. */
1561 syms_of_data ();
1562 #endif
1563 syms_of_chartab ();
1564 syms_of_lread ();
1565 syms_of_print ();
1566 syms_of_eval ();
1567 syms_of_fns ();
1568 syms_of_floatfns ();
1569
1570 syms_of_buffer ();
1571 syms_of_bytecode ();
1572 syms_of_callint ();
1573 syms_of_casefiddle ();
1574 syms_of_casetab ();
1575 syms_of_callproc ();
1576 syms_of_category ();
1577 syms_of_ccl ();
1578 #endif
1579 syms_of_character ();
1580 syms_of_cmds ();
1581 #ifndef NO_DIR_LIBRARY
1582 syms_of_dired ();
1583 #endif /* not NO_DIR_LIBRARY */
1584 syms_of_display ();
1585 syms_of_doc ();
1586 syms_of_editfns ();
1587 syms_of_emacs ();
1588 #ifdef CLASH_DETECTION
1589 syms_of_filelock ();
1590 #endif /* CLASH_DETECTION */
1591 syms_of_indent ();
1592 syms_of_insdel ();
1593 /* syms_of_keymap (); */
1594 syms_of_macros ();
1595 syms_of_marker ();
1596 syms_of_minibuf ();
1597 syms_of_process ();
1598 syms_of_search ();
1599 syms_of_frame ();
1600 syms_of_syntax ();
1601 syms_of_terminal ();
1602 syms_of_term ();
1603 syms_of_undo ();
1604 #ifdef HAVE_SOUND
1605 syms_of_sound ();
1606 #endif
1607 syms_of_textprop ();
1608 syms_of_composite ();
1609 #ifdef VMS
1610 syms_of_vmsproc ();
1611 #endif /* VMS */
1612 #ifdef WINDOWSNT
1613 syms_of_ntproc ();
1614 #endif /* WINDOWSNT */
1615 syms_of_window ();
1616 syms_of_xdisp ();
1617 #ifdef HAVE_WINDOW_SYSTEM
1618 syms_of_font ();
1619 syms_of_fringe ();
1620 syms_of_image ();
1621 #endif /* HAVE_WINDOW_SYSTEM */
1622 #ifdef HAVE_X_WINDOWS
1623 syms_of_xterm ();
1624 syms_of_xfns ();
1625 syms_of_fontset ();
1626 #ifdef HAVE_X_SM
1627 syms_of_xsmfns ();
1628 #endif
1629 #ifdef HAVE_X11
1630 syms_of_xselect ();
1631 #endif
1632 #endif /* HAVE_X_WINDOWS */
1633
1634 #ifndef HAVE_NTGUI
1635 #ifndef MAC_OS
1636 /* Called before init_window_once for Mac OS Classic. */
1637 syms_of_xmenu ();
1638 #endif
1639 #endif
1640
1641 #ifdef HAVE_NTGUI
1642 syms_of_w32term ();
1643 syms_of_w32fns ();
1644 syms_of_w32select ();
1645 syms_of_w32menu ();
1646 syms_of_fontset ();
1647 #endif /* HAVE_NTGUI */
1648
1649 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1650 syms_of_macterm ();
1651 syms_of_macfns ();
1652 syms_of_macmenu ();
1653 syms_of_macselect ();
1654 syms_of_fontset ();
1655 #endif /* MAC_OSX && HAVE_CARBON */
1656
1657 #ifdef HAVE_DBUS
1658 syms_of_dbusbind ();
1659 #endif /* HAVE_DBUS */
1660
1661 #ifdef SYMS_SYSTEM
1662 SYMS_SYSTEM;
1663 #endif
1664
1665 #ifdef SYMS_MACHINE
1666 SYMS_MACHINE;
1667 #endif
1668
1669 keys_of_casefiddle ();
1670 keys_of_cmds ();
1671 keys_of_buffer ();
1672 keys_of_keyboard ();
1673 keys_of_keymap ();
1674 keys_of_minibuf ();
1675 keys_of_window ();
1676 }
1677 else
1678 {
1679 /* Initialization that must be done even if the global variable
1680 initialized is non zero. */
1681 #ifdef HAVE_NTGUI
1682 globals_of_w32fns ();
1683 globals_of_w32menu ();
1684 globals_of_w32select ();
1685 #endif /* HAVE_NTGUI */
1686 }
1687
1688 init_charset ();
1689
1690 init_editfns (); /* init_process uses Voperating_system_release. */
1691 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1692 init_keyboard (); /* This too must precede init_sys_modes. */
1693 #ifdef VMS
1694 init_vmsproc (); /* And this too. */
1695 #endif /* VMS */
1696 if (!noninteractive)
1697 {
1698 #ifdef VMS
1699 init_vms_input ();/* init_display calls get_tty_size, that needs this. */
1700 #endif /* VMS */
1701 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1702 }
1703 init_fns ();
1704 init_xdisp ();
1705 #ifdef HAVE_WINDOW_SYSTEM
1706 init_fringe ();
1707 init_image ();
1708 #endif /* HAVE_WINDOW_SYSTEM */
1709 init_macros ();
1710 init_floatfns ();
1711 #ifdef VMS
1712 init_vmsfns ();
1713 #endif /* VMS */
1714 #ifdef HAVE_SOUND
1715 init_sound ();
1716 #endif
1717 init_window ();
1718
1719 if (!initialized)
1720 {
1721 char *file;
1722 /* Handle -l loadup, args passed by Makefile. */
1723 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1724 Vtop_level = Fcons (intern ("load"),
1725 Fcons (build_string (file), Qnil));
1726 /* Unless next switch is -nl, load "loadup.el" first thing. */
1727 if (! no_loadup)
1728 Vtop_level = Fcons (intern ("load"),
1729 Fcons (build_string ("loadup.el"), Qnil));
1730 }
1731
1732 if (initialized)
1733 {
1734 #ifdef HAVE_TZSET
1735 {
1736 /* If the execution TZ happens to be the same as the dump TZ,
1737 change it to some other value and then change it back,
1738 to force the underlying implementation to reload the TZ info.
1739 This is needed on implementations that load TZ info from files,
1740 since the TZ file contents may differ between dump and execution. */
1741 char *tz = getenv ("TZ");
1742 if (tz && !strcmp (tz, dump_tz))
1743 {
1744 ++*tz;
1745 tzset ();
1746 --*tz;
1747 }
1748 }
1749 #endif
1750 }
1751
1752 /* Set up for profiling. This is known to work on FreeBSD,
1753 GNU/Linux and MinGW. It might work on some other systems too.
1754 Give it a try and tell us if it works on your system. To compile
1755 for profiling, add -pg to the switches your platform uses in
1756 CFLAGS and LDFLAGS. For example:
1757 `make CFLAGS="-pg -g -O -DPROFILING=1" LDFLAGS="-pg -g"'. */
1758 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1759 #ifdef PROFILING
1760 if (initialized)
1761 {
1762 extern void _mcleanup ();
1763 #ifdef __MINGW32__
1764 extern unsigned char etext asm ("etext");
1765 #else
1766 extern char etext;
1767 #endif
1768 extern void safe_bcopy ();
1769 extern void dump_opcode_frequencies ();
1770
1771 atexit (_mcleanup);
1772 /* This uses safe_bcopy because that function comes first in the
1773 Emacs executable. It might be better to use something that
1774 gives the start of the text segment, but start_of_text is not
1775 defined on all systems now. */
1776 monstartup (safe_bcopy, &etext);
1777 }
1778 else
1779 moncontrol (0);
1780 #endif
1781 #endif
1782
1783 initialized = 1;
1784
1785 #ifdef LOCALTIME_CACHE
1786 /* Some versions of localtime have a bug. They cache the value of the time
1787 zone rather than looking it up every time. Since localtime() is
1788 called to bolt the undumping time into the undumped emacs, this
1789 results in localtime ignoring the TZ environment variable.
1790 This flushes the new TZ value into localtime. */
1791 tzset ();
1792 #endif /* defined (LOCALTIME_CACHE) */
1793
1794 /* Enter editor command loop. This never returns. */
1795 Frecursive_edit ();
1796 /* NOTREACHED */
1797 return 0;
1798 }
1799 \f
1800 /* Sort the args so we can find the most important ones
1801 at the beginning of argv. */
1802
1803 /* First, here's a table of all the standard options. */
1804
1805 struct standard_args
1806 {
1807 char *name;
1808 char *longname;
1809 int priority;
1810 int nargs;
1811 };
1812
1813 struct standard_args standard_args[] =
1814 {
1815 { "-version", "--version", 150, 0 },
1816 #ifdef HAVE_SHM
1817 { "-nl", "--no-shared-memory", 140, 0 },
1818 #endif
1819 #ifdef VMS
1820 { "-map", "--map-data", 130, 0 },
1821 #endif
1822 { "-t", "--terminal", 120, 1 },
1823 { "-nw", "--no-window-system", 110, 0 },
1824 { "-nw", "--no-windows", 110, 0 },
1825 { "-batch", "--batch", 100, 0 },
1826 { "-script", "--script", 100, 1 },
1827 { "-help", "--help", 90, 0 },
1828 { "-no-unibyte", "--no-unibyte", 83, 0 },
1829 { "-multibyte", "--multibyte", 82, 0 },
1830 { "-unibyte", "--unibyte", 81, 0 },
1831 { "-no-multibyte", "--no-multibyte", 80, 0 },
1832 { "-nl", "--no-loadup", 70, 0 },
1833 { "-enable-font-backend", "--enable-font-backend", 65, 0 },
1834 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1835 /* -d must come last before the options handled in startup.el. */
1836 { "-d", "--display", 60, 1 },
1837 { "-display", 0, 60, 1 },
1838 /* Now for the options handled in startup.el. */
1839 { "-Q", "--quick", 55, 0 },
1840 { "-quick", 0, 55, 0 },
1841 { "-q", "--no-init-file", 50, 0 },
1842 { "-no-init-file", 0, 50, 0 },
1843 { "-no-site-file", "--no-site-file", 40, 0 },
1844 { "-u", "--user", 30, 1 },
1845 { "-user", 0, 30, 1 },
1846 { "-debug-init", "--debug-init", 20, 0 },
1847 { "-nbi", "--no-bitmap-icon", 15, 0 },
1848 { "-iconic", "--iconic", 15, 0 },
1849 { "-D", "--basic-display", 12, 0},
1850 { "-basic-display", 0, 12, 0},
1851 { "-bg", "--background-color", 10, 1 },
1852 { "-background", 0, 10, 1 },
1853 { "-fg", "--foreground-color", 10, 1 },
1854 { "-foreground", 0, 10, 1 },
1855 { "-bd", "--border-color", 10, 1 },
1856 { "-bw", "--border-width", 10, 1 },
1857 { "-ib", "--internal-border", 10, 1 },
1858 { "-ms", "--mouse-color", 10, 1 },
1859 { "-cr", "--cursor-color", 10, 1 },
1860 { "-nbc", "--no-blinking-cursor", 10, 0 },
1861 { "-fn", "--font", 10, 1 },
1862 { "-font", 0, 10, 1 },
1863 { "-fs", "--fullscreen", 10, 0 },
1864 { "-fw", "--fullwidth", 10, 0 },
1865 { "-fh", "--fullheight", 10, 0 },
1866 { "-g", "--geometry", 10, 1 },
1867 { "-geometry", 0, 10, 1 },
1868 { "-T", "--title", 10, 1 },
1869 { "-title", 0, 10, 1 },
1870 { "-name", "--name", 10, 1 },
1871 { "-xrm", "--xrm", 10, 1 },
1872 { "-r", "--reverse-video", 5, 0 },
1873 { "-rv", 0, 5, 0 },
1874 { "-reverse", 0, 5, 0 },
1875 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1876 { "-vb", "--vertical-scroll-bars", 5, 0 },
1877 { "-color", "--color", 5, 0},
1878 { "-no-splash", "--no-splash", 3, 0 },
1879 { "-no-desktop", "--no-desktop", 3, 0 },
1880 /* These have the same priority as ordinary file name args,
1881 so they are not reordered with respect to those. */
1882 { "-L", "--directory", 0, 1 },
1883 { "-directory", 0, 0, 1 },
1884 { "-l", "--load", 0, 1 },
1885 { "-load", 0, 0, 1 },
1886 { "-scriptload", "--scriptload", 0, 1 },
1887 { "-f", "--funcall", 0, 1 },
1888 { "-funcall", 0, 0, 1 },
1889 { "-eval", "--eval", 0, 1 },
1890 { "-execute", "--execute", 0, 1 },
1891 { "-find-file", "--find-file", 0, 1 },
1892 { "-visit", "--visit", 0, 1 },
1893 { "-file", "--file", 0, 1 },
1894 { "-insert", "--insert", 0, 1 },
1895 /* This should be processed after ordinary file name args and the like. */
1896 { "-kill", "--kill", -10, 0 },
1897 };
1898
1899 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1900 so that the highest priority ones come first.
1901 Do not change the order of elements of equal priority.
1902 If an option takes an argument, keep it and its argument together.
1903
1904 If an option that takes no argument appears more
1905 than once, eliminate all but one copy of it. */
1906
1907 static void
1908 sort_args (argc, argv)
1909 int argc;
1910 char **argv;
1911 {
1912 char **new = (char **) xmalloc (sizeof (char *) * argc);
1913 /* For each element of argv,
1914 the corresponding element of options is:
1915 0 for an option that takes no arguments,
1916 1 for an option that takes one argument, etc.
1917 -1 for an ordinary non-option argument. */
1918 int *options = (int *) xmalloc (sizeof (int) * argc);
1919 int *priority = (int *) xmalloc (sizeof (int) * argc);
1920 int to = 1;
1921 int incoming_used = 1;
1922 int from;
1923 int i;
1924
1925 /* Categorize all the options,
1926 and figure out which argv elts are option arguments. */
1927 for (from = 1; from < argc; from++)
1928 {
1929 options[from] = -1;
1930 priority[from] = 0;
1931 if (argv[from][0] == '-')
1932 {
1933 int match, thislen;
1934 char *equals;
1935
1936 /* If we have found "--", don't consider
1937 any more arguments as options. */
1938 if (argv[from][1] == '-' && argv[from][2] == 0)
1939 {
1940 /* Leave the "--", and everything following it, at the end. */
1941 for (; from < argc; from++)
1942 {
1943 priority[from] = -100;
1944 options[from] = -1;
1945 }
1946 break;
1947 }
1948
1949 /* Look for a match with a known old-fashioned option. */
1950 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1951 if (!strcmp (argv[from], standard_args[i].name))
1952 {
1953 options[from] = standard_args[i].nargs;
1954 priority[from] = standard_args[i].priority;
1955 if (from + standard_args[i].nargs >= argc)
1956 fatal ("Option `%s' requires an argument\n", argv[from]);
1957 from += standard_args[i].nargs;
1958 goto done;
1959 }
1960
1961 /* Look for a match with a known long option.
1962 MATCH is -1 if no match so far, -2 if two or more matches so far,
1963 >= 0 (the table index of the match) if just one match so far. */
1964 if (argv[from][1] == '-')
1965 {
1966 match = -1;
1967 thislen = strlen (argv[from]);
1968 equals = index (argv[from], '=');
1969 if (equals != 0)
1970 thislen = equals - argv[from];
1971
1972 for (i = 0;
1973 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1974 if (standard_args[i].longname
1975 && !strncmp (argv[from], standard_args[i].longname,
1976 thislen))
1977 {
1978 if (match == -1)
1979 match = i;
1980 else
1981 match = -2;
1982 }
1983
1984 /* If we found exactly one match, use that. */
1985 if (match >= 0)
1986 {
1987 options[from] = standard_args[match].nargs;
1988 priority[from] = standard_args[match].priority;
1989 /* If --OPTION=VALUE syntax is used,
1990 this option uses just one argv element. */
1991 if (equals != 0)
1992 options[from] = 0;
1993 if (from + options[from] >= argc)
1994 fatal ("Option `%s' requires an argument\n", argv[from]);
1995 from += options[from];
1996 }
1997 }
1998 done: ;
1999 }
2000 }
2001
2002 /* Copy the arguments, in order of decreasing priority, to NEW. */
2003 new[0] = argv[0];
2004 while (incoming_used < argc)
2005 {
2006 int best = -1;
2007 int best_priority = -9999;
2008
2009 /* Find the highest priority remaining option.
2010 If several have equal priority, take the first of them. */
2011 for (from = 1; from < argc; from++)
2012 {
2013 if (argv[from] != 0 && priority[from] > best_priority)
2014 {
2015 best_priority = priority[from];
2016 best = from;
2017 }
2018 /* Skip option arguments--they are tied to the options. */
2019 if (options[from] > 0)
2020 from += options[from];
2021 }
2022
2023 if (best < 0)
2024 abort ();
2025
2026 /* Copy the highest priority remaining option, with its args, to NEW.
2027 Unless it is a duplicate of the previous one. */
2028 if (! (options[best] == 0
2029 && ! strcmp (new[to - 1], argv[best])))
2030 {
2031 new[to++] = argv[best];
2032 for (i = 0; i < options[best]; i++)
2033 new[to++] = argv[best + i + 1];
2034 }
2035
2036 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
2037
2038 /* Clear out this option in ARGV. */
2039 argv[best] = 0;
2040 for (i = 0; i < options[best]; i++)
2041 argv[best + i + 1] = 0;
2042 }
2043
2044 /* If duplicate options were deleted, fill up extra space with null ptrs. */
2045 while (to < argc)
2046 new[to++] = 0;
2047
2048 bcopy (new, argv, sizeof (char *) * argc);
2049
2050 xfree (options);
2051 xfree (new);
2052 xfree (priority);
2053 }
2054 \f
2055 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
2056 doc: /* Exit the Emacs job and kill it.
2057 If ARG is an integer, return ARG as the exit program code.
2058 If ARG is a string, stuff it as keyboard input.
2059
2060 The value of `kill-emacs-hook', if not void,
2061 is a list of functions (of no args),
2062 all of which are called before Emacs is actually killed. */)
2063 (arg)
2064 Lisp_Object arg;
2065 {
2066 struct gcpro gcpro1;
2067
2068 GCPRO1 (arg);
2069
2070 if (feof (stdin))
2071 arg = Qt;
2072
2073 if (!NILP (Vrun_hooks) && !noninteractive)
2074 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
2075
2076 UNGCPRO;
2077
2078 /* Is it really necessary to do this deassign
2079 when we are going to exit anyway? */
2080 /* #ifdef VMS
2081 stop_vms_input ();
2082 #endif */
2083
2084 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
2085
2086 /* If we have an auto-save list file,
2087 kill it because we are exiting Emacs deliberately (not crashing).
2088 Do it after shut_down_emacs, which does an auto-save. */
2089 if (STRINGP (Vauto_save_list_file_name))
2090 unlink (SDATA (Vauto_save_list_file_name));
2091
2092 exit (INTEGERP (arg) ? XINT (arg) : EXIT_SUCCESS);
2093 /* NOTREACHED */
2094 return Qnil;
2095 }
2096
2097
2098 /* Perform an orderly shutdown of Emacs. Autosave any modified
2099 buffers, kill any child processes, clean up the terminal modes (if
2100 we're in the foreground), and other stuff like that. Don't perform
2101 any redisplay; this may be called when Emacs is shutting down in
2102 the background, or after its X connection has died.
2103
2104 If SIG is a signal number, print a message for it.
2105
2106 This is called by fatal signal handlers, X protocol error handlers,
2107 and Fkill_emacs. */
2108
2109 void
2110 shut_down_emacs (sig, no_x, stuff)
2111 int sig, no_x;
2112 Lisp_Object stuff;
2113 {
2114 /* Prevent running of hooks from now on. */
2115 Vrun_hooks = Qnil;
2116
2117 /* Don't update display from now on. */
2118 Vinhibit_redisplay = Qt;
2119
2120 /* If we are controlling the terminal, reset terminal modes. */
2121 #ifdef EMACS_HAVE_TTY_PGRP
2122 {
2123 int pgrp = EMACS_GETPGRP (0);
2124
2125 int tpgrp;
2126 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
2127 && tpgrp == pgrp)
2128 {
2129 reset_all_sys_modes ();
2130 if (sig && sig != SIGTERM)
2131 fprintf (stderr, "Fatal error (%d)", sig);
2132 }
2133 }
2134 #else
2135 fflush (stdout);
2136 reset_all_sys_modes ();
2137 #endif
2138
2139 stuff_buffered_input (stuff);
2140
2141 #ifdef subprocesses
2142 inhibit_sentinels = 1;
2143 #endif
2144 kill_buffer_processes (Qnil);
2145 Fdo_auto_save (Qt, Qnil);
2146
2147 #ifdef CLASH_DETECTION
2148 unlock_all_files ();
2149 #endif
2150
2151 #ifdef VMS
2152 kill_vms_processes ();
2153 #endif
2154
2155 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2156 #ifdef HAVE_X_WINDOWS
2157 /* It's not safe to call intern here. Maybe we are crashing. */
2158 if (!noninteractive && SYMBOLP (Vinitial_window_system)
2159 && SCHARS (SYMBOL_NAME (Vinitial_window_system)) == 1
2160 && SREF (SYMBOL_NAME (Vinitial_window_system), 0) == 'x'
2161 && ! no_x)
2162 Fx_close_current_connection ();
2163 #endif /* HAVE_X_WINDOWS */
2164 #endif
2165
2166 #ifdef SIGIO
2167 /* There is a tendency for a SIGIO signal to arrive within exit,
2168 and cause a SIGHUP because the input descriptor is already closed. */
2169 unrequest_sigio ();
2170 signal (SIGIO, SIG_IGN);
2171 #endif
2172
2173 #ifdef WINDOWSNT
2174 term_ntproc ();
2175 #endif
2176
2177 /* Do this only if terminating normally, we want glyph matrices
2178 etc. in a core dump. */
2179 if (sig == 0 || sig == SIGTERM)
2180 {
2181 check_glyph_memory ();
2182 check_message_stack ();
2183 }
2184
2185 #ifdef MSDOS
2186 dos_cleanup ();
2187 #endif
2188 }
2189
2190
2191 \f
2192 #ifndef CANNOT_DUMP
2193
2194 #ifdef HAVE_SHM
2195
2196 DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
2197 doc: /* Dump current state of Emacs into data file FILENAME.
2198 This function exists on systems that use HAVE_SHM. */)
2199 (filename)
2200 Lisp_Object filename;
2201 {
2202 extern char my_edata[];
2203 Lisp_Object tem;
2204
2205 check_pure_size ();
2206 CHECK_STRING (filename);
2207 filename = Fexpand_file_name (filename, Qnil);
2208
2209 tem = Vpurify_flag;
2210 Vpurify_flag = Qnil;
2211
2212 fflush (stdout);
2213 /* Tell malloc where start of impure now is. */
2214 /* Also arrange for warnings when nearly out of space. */
2215 #ifndef SYSTEM_MALLOC
2216 memory_warnings (my_edata, malloc_warning);
2217 #endif
2218 map_out_data (SDATA (filename));
2219
2220 Vpurify_flag = tem;
2221
2222 return Qnil;
2223 }
2224
2225 #else /* not HAVE_SHM */
2226
2227 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2228 doc: /* Dump current state of Emacs into executable file FILENAME.
2229 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2230 This is used in the file `loadup.el' when building Emacs.
2231
2232 You must run Emacs in batch mode in order to dump it. */)
2233 (filename, symfile)
2234 Lisp_Object filename, symfile;
2235 {
2236 extern char my_edata[];
2237 Lisp_Object tem;
2238 Lisp_Object symbol;
2239 int count = SPECPDL_INDEX ();
2240
2241 check_pure_size ();
2242
2243 if (! noninteractive)
2244 error ("Dumping Emacs works only in batch mode");
2245
2246 #ifdef GNU_LINUX
2247 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2248 {
2249 fprintf (stderr, "**************************************************\n");
2250 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2251 fprintf (stderr, "heap (%lu bytes). This usually means that exec-shield\n",
2252 heap_bss_diff);
2253 fprintf (stderr, "or something similar is in effect. The dump may\n");
2254 fprintf (stderr, "fail because of this. See the section about\n");
2255 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
2256 fprintf (stderr, "**************************************************\n");
2257 }
2258 #endif /* GNU_LINUX */
2259
2260 /* Bind `command-line-processed' to nil before dumping,
2261 so that the dumped Emacs will process its command line
2262 and set up to work with X windows if appropriate. */
2263 symbol = intern ("command-line-processed");
2264 specbind (symbol, Qnil);
2265
2266 CHECK_STRING (filename);
2267 filename = Fexpand_file_name (filename, Qnil);
2268 if (!NILP (symfile))
2269 {
2270 CHECK_STRING (symfile);
2271 if (SCHARS (symfile))
2272 symfile = Fexpand_file_name (symfile, Qnil);
2273 }
2274
2275 tem = Vpurify_flag;
2276 Vpurify_flag = Qnil;
2277
2278 #ifdef HAVE_TZSET
2279 set_time_zone_rule (dump_tz);
2280 #ifndef LOCALTIME_CACHE
2281 /* Force a tz reload, since set_time_zone_rule doesn't. */
2282 tzset ();
2283 #endif
2284 #endif
2285
2286 fflush (stdout);
2287 #ifdef VMS
2288 mapout_data (SDATA (filename));
2289 #else
2290 /* Tell malloc where start of impure now is. */
2291 /* Also arrange for warnings when nearly out of space. */
2292 #ifndef SYSTEM_MALLOC
2293 #ifndef WINDOWSNT
2294 /* On Windows, this was done before dumping, and that once suffices.
2295 Meanwhile, my_edata is not valid on Windows. */
2296 memory_warnings (my_edata, malloc_warning);
2297 #endif /* not WINDOWSNT */
2298 #endif
2299 #if !defined (SYSTEM_MALLOC) && defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2300 /* Pthread may call malloc before main, and then we will get an endless
2301 loop, because pthread_self (see alloc.c) calls malloc the first time
2302 it is called on some systems. */
2303 reset_malloc_hooks ();
2304 #endif
2305 #ifdef DOUG_LEA_MALLOC
2306 malloc_state_ptr = malloc_get_state ();
2307 #endif
2308
2309 #ifdef USE_MMAP_FOR_BUFFERS
2310 mmap_set_vars (0);
2311 #endif
2312 unexec (SDATA (filename),
2313 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
2314 #ifdef USE_MMAP_FOR_BUFFERS
2315 mmap_set_vars (1);
2316 #endif
2317 #ifdef DOUG_LEA_MALLOC
2318 free (malloc_state_ptr);
2319 #endif
2320 #endif /* not VMS */
2321
2322 Vpurify_flag = tem;
2323
2324 return unbind_to (count, Qnil);
2325 }
2326
2327 #endif /* not HAVE_SHM */
2328
2329 #endif /* not CANNOT_DUMP */
2330 \f
2331 #if HAVE_SETLOCALE
2332 /* Recover from setlocale (LC_ALL, ""). */
2333 void
2334 fixup_locale ()
2335 {
2336 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2337 so that numbers are read and printed properly for Emacs Lisp. */
2338 setlocale (LC_NUMERIC, "C");
2339 }
2340
2341 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2342 DESIRED_LOCALE. */
2343 static void
2344 synchronize_locale (category, plocale, desired_locale)
2345 int category;
2346 Lisp_Object *plocale;
2347 Lisp_Object desired_locale;
2348 {
2349 if (! EQ (*plocale, desired_locale))
2350 {
2351 *plocale = desired_locale;
2352 setlocale (category, (STRINGP (desired_locale)
2353 ? (char *) SDATA (desired_locale)
2354 : ""));
2355 }
2356 }
2357
2358 /* Set system time locale to match Vsystem_time_locale, if possible. */
2359 void
2360 synchronize_system_time_locale ()
2361 {
2362 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2363 Vsystem_time_locale);
2364 }
2365
2366 /* Set system messages locale to match Vsystem_messages_locale, if
2367 possible. */
2368 void
2369 synchronize_system_messages_locale ()
2370 {
2371 #ifdef LC_MESSAGES
2372 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2373 Vsystem_messages_locale);
2374 #endif
2375 }
2376 #endif /* HAVE_SETLOCALE */
2377 \f
2378 #ifndef SEPCHAR
2379 #define SEPCHAR ':'
2380 #endif
2381
2382 Lisp_Object
2383 decode_env_path (evarname, defalt)
2384 char *evarname, *defalt;
2385 {
2386 register char *path, *p;
2387 Lisp_Object lpath, element, tem;
2388
2389 /* It's okay to use getenv here, because this function is only used
2390 to initialize variables when Emacs starts up, and isn't called
2391 after that. */
2392 if (evarname != 0)
2393 path = (char *) getenv (evarname);
2394 else
2395 path = 0;
2396 if (!path)
2397 path = defalt;
2398 #ifdef DOS_NT
2399 /* Ensure values from the environment use the proper directory separator. */
2400 if (path)
2401 {
2402 p = alloca (strlen (path) + 1);
2403 strcpy (p, path);
2404 path = p;
2405
2406 if ('/' == DIRECTORY_SEP)
2407 dostounix_filename (path);
2408 else
2409 unixtodos_filename (path);
2410 }
2411 #endif
2412 lpath = Qnil;
2413 while (1)
2414 {
2415 p = index (path, SEPCHAR);
2416 if (!p) p = path + strlen (path);
2417 element = (p - path ? make_string (path, p - path)
2418 : build_string ("."));
2419
2420 /* Add /: to the front of the name
2421 if it would otherwise be treated as magic. */
2422 tem = Ffind_file_name_handler (element, Qt);
2423
2424 /* However, if the handler says "I'm safe",
2425 don't bother adding /:. */
2426 if (SYMBOLP (tem))
2427 {
2428 Lisp_Object prop;
2429 prop = Fget (tem, intern ("safe-magic"));
2430 if (! NILP (prop))
2431 tem = Qnil;
2432 }
2433
2434 if (! NILP (tem))
2435 element = concat2 (build_string ("/:"), element);
2436
2437 lpath = Fcons (element, lpath);
2438 if (*p)
2439 path = p + 1;
2440 else
2441 break;
2442 }
2443 return Fnreverse (lpath);
2444 }
2445
2446 void
2447 syms_of_emacs ()
2448 {
2449 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2450 staticpro (&Qfile_name_handler_alist);
2451
2452 #ifndef CANNOT_DUMP
2453 #ifdef HAVE_SHM
2454 defsubr (&Sdump_emacs_data);
2455 #else
2456 defsubr (&Sdump_emacs);
2457 #endif
2458 #endif
2459
2460 defsubr (&Skill_emacs);
2461
2462 defsubr (&Sinvocation_name);
2463 defsubr (&Sinvocation_directory);
2464
2465 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2466 doc: /* Args passed by shell to Emacs, as a list of strings.
2467 Many arguments are deleted from the list as they are processed. */);
2468
2469 DEFVAR_LISP ("system-type", &Vsystem_type,
2470 doc: /* Value is symbol indicating type of operating system you are using.
2471 Special values:
2472 `gnu/linux' compiled for a GNU/Linux system.
2473 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2474 `macos' compiled for Mac OS 9.
2475 `ms-dos' compiled as an MS-DOS application.
2476 `windows-nt' compiled as a native W32 application.
2477 `cygwin' compiled using the Cygwin library.
2478 `vax-vms' or
2479 `axp-vms' compiled for a (Open)VMS system.
2480 Anything else indicates some sort of Unix system. */);
2481 Vsystem_type = intern (SYSTEM_TYPE);
2482
2483 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
2484 doc: /* Value is string indicating configuration Emacs was built for.
2485 On MS-Windows, the value reflects the OS flavor and version on which
2486 Emacs is running. */);
2487 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2488
2489 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
2490 doc: /* String containing the configuration options Emacs was built with. */);
2491 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2492
2493 DEFVAR_BOOL ("noninteractive", &noninteractive1,
2494 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2495
2496 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
2497 doc: /* Hook to be run when `kill-emacs' is called.
2498 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2499 in other similar situations), functions placed on this hook should not
2500 expect to be able to interact with the user. To ask for confirmation,
2501 see `kill-emacs-query-functions' instead.
2502
2503 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2504 Vkill_emacs_hook = Qnil;
2505
2506 DEFVAR_INT ("emacs-priority", &emacs_priority,
2507 doc: /* Priority for Emacs to run at.
2508 This value is effective only if set before Emacs is dumped,
2509 and only if the Emacs executable is installed with setuid to permit
2510 it to change priority. (Emacs sets its uid back to the real uid.)
2511 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2512 before you compile Emacs, to enable the code for this feature. */);
2513 emacs_priority = 0;
2514
2515 DEFVAR_LISP ("path-separator", &Vpath_separator,
2516 doc: /* String containing the character that separates directories in
2517 search paths, such as PATH and other similar environment variables. */);
2518 {
2519 char c = SEPCHAR;
2520 Vpath_separator = make_string (&c, 1);
2521 }
2522
2523 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
2524 doc: /* The program name that was used to run Emacs.
2525 Any directory names are omitted. */);
2526
2527 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
2528 doc: /* The directory in which the Emacs executable was found, to run it.
2529 The value is nil if that directory's name is not known. */);
2530
2531 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
2532 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2533 This is non-nil when we can't find those directories in their standard
2534 installed locations, but we can find them near where the Emacs executable
2535 was found. */);
2536 Vinstallation_directory = Qnil;
2537
2538 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
2539 doc: /* System locale for messages. */);
2540 Vsystem_messages_locale = Qnil;
2541
2542 DEFVAR_LISP ("previous-system-messages-locale",
2543 &Vprevious_system_messages_locale,
2544 doc: /* Most recently used system locale for messages. */);
2545 Vprevious_system_messages_locale = Qnil;
2546
2547 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
2548 doc: /* System locale for time. */);
2549 Vsystem_time_locale = Qnil;
2550
2551 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
2552 doc: /* Most recently used system locale for time. */);
2553 Vprevious_system_time_locale = Qnil;
2554 }
2555
2556 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2557 (do not change this comment) */