(ORDINARY_LINK): No longer define on OpenBSD.
[bpt/emacs.git] / src / emacs.c
CommitLineData
f927c5ae 1/* Fully extensible Emacs, running on Unix, intended for GNU.
0b5538bd 2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
4e6835db 3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
f927c5ae
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4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
40be253a 9the Free Software Foundation; either version 2, or (at your option)
f927c5ae
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10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING. If not, write to
4fc5845f
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19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA. */
f927c5ae
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21
22
68c45bf0 23#include <config.h>
f927c5ae
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24#include <signal.h>
25#include <errno.h>
f927c5ae
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26#include <stdio.h>
27
28#include <sys/types.h>
29#include <sys/file.h>
30
31#ifdef VMS
32#include <ssdef.h>
33#endif
34
cda4a5fd
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35#ifdef HAVE_UNISTD_H
36#include <unistd.h>
37#endif
38
488b7cb3 39#ifdef BSD_SYSTEM
f927c5ae
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40#include <sys/ioctl.h>
41#endif
42
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43#ifdef WINDOWSNT
44#include <fcntl.h>
52c7f9ee
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45#include <windows.h> /* just for w32.h */
46#include "w32.h"
c68a2829 47#include "w32heap.h" /* for prototype of sbrk */
edd3ff1d
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48#endif
49
f927c5ae
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50#include "lisp.h"
51#include "commands.h"
bef79ee4 52#include "intervals.h"
a08a816a 53#include "buffer.h"
3f6abfd7 54#include "window.h"
f927c5ae 55
edc8ae07 56#include "systty.h"
6c3a4e9d 57#include "blockinput.h"
8090eb09 58#include "syssignal.h"
6c362a8b 59#include "process.h"
5bda49c6 60#include "termhooks.h"
dfcf069d 61#include "keyboard.h"
e35f6ff7 62#include "keymap.h"
a41f8bed 63
68c45bf0
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64#ifdef HAVE_SETLOCALE
65#include <locale.h>
66#endif
67
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68#ifdef HAVE_SETRLIMIT
69#include <sys/time.h>
70#include <sys/resource.h>
71#endif
72
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73#ifdef HAVE_PERSONALITY_LINUX32
74#include <sys/personality.h>
75#endif
76
f927c5ae
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77#ifndef O_RDWR
78#define O_RDWR 2
79#endif
80
f95c3f91 81#ifdef HAVE_SETPGID
2b7e8799 82#if !defined (USG) || defined (BSD_PGRPS)
90553aa3 83#undef setpgrp
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84#define setpgrp setpgid
85#endif
2b7e8799 86#endif
f95c3f91 87
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88extern void malloc_warning P_ ((char *));
89extern void set_time_zone_rule P_ ((char *));
8892f40b
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90#ifdef HAVE_INDEX
91extern char *index P_ ((const char *, int));
92#endif
43165242 93
30aa3f19
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94/* Make these values available in GDB, which doesn't see macros. */
95
0dda8fd8
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96#ifdef USE_LSB_TAG
97int gdb_use_lsb = 1;
98#else
99int gdb_use_lsb = 0;
100#endif
101#ifdef NO_UNION_TYPE
102int gdb_use_union = 0;
103#else
104int gdb_use_union = 1;
105#endif
30aa3f19
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106EMACS_INT gdb_valbits = VALBITS;
107EMACS_INT gdb_gctypebits = GCTYPEBITS;
30aa3f19
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108#ifdef DATA_SEG_BITS
109EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
110#else
df50cf6c 111EMACS_INT gdb_data_seg_bits = 0;
30aa3f19 112#endif
00da0e4a 113EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
3fba6ca9 114EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG;
6baa02d6
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115/* GDB might say "No enum type named pvec_type" if we don't have at
116 least one symbol with that type, and then xbacktrace could fail. */
117enum pvec_type gdb_pvec_type = PVEC_TYPE_MASK;
30aa3f19 118
7db35a48 119/* Command line args from shell, as list of strings. */
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120Lisp_Object Vcommand_line_args;
121
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122/* The name under which Emacs was invoked, with any leading directory
123 names discarded. */
124Lisp_Object Vinvocation_name;
125
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126/* The directory name from which Emacs was invoked. */
127Lisp_Object Vinvocation_directory;
128
07f4d123
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129/* The directory name in which to find subdirs such as lisp and etc.
130 nil means get them only from PATH_LOADSEARCH. */
131Lisp_Object Vinstallation_directory;
132
e5d77022
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133/* Hook run by `kill-emacs' before it does really anything. */
134Lisp_Object Vkill_emacs_hook;
135
f9a6326d
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136/* An empty lisp string. To avoid having to build any other. */
137Lisp_Object empty_string;
138
074a066b
GV
139/* Search path separator. */
140Lisp_Object Vpath_separator;
141
f927c5ae
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142/* Set nonzero after Emacs has started up the first time.
143 Prevents reinitialization of the Lisp world and keymaps
144 on subsequent starts. */
145int initialized;
146
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147#ifdef DOUG_LEA_MALLOC
148/* Preserves a pointer to the memory allocated that copies that
149 static data inside glibc's malloc. */
150void *malloc_state_ptr;
151/* From glibc, a routine that returns a copy of the malloc internal state. */
152extern void *malloc_get_state ();
153/* From glibc, a routine that overwrites the malloc internal state. */
fa8459a3 154extern int malloc_set_state ();
7c9cd446
AS
155/* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
156 dumping. Used to work around a bug in glibc's malloc. */
157int malloc_using_checking;
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158#endif
159
271c7b7c 160/* Variable whose value is symbol giving operating system type. */
f927c5ae 161Lisp_Object Vsystem_type;
271c7b7c
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162
163/* Variable whose value is string giving configuration built for. */
164Lisp_Object Vsystem_configuration;
f0fc0b1a
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165
166/* Variable whose value is string giving configuration options,
167 for use when reporting bugs. */
168Lisp_Object Vsystem_configuration_options;
169
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170Lisp_Object Qfile_name_handler_alist;
171
68c45bf0 172/* Current and previous system locales for messages and time. */
ca9c0567
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173Lisp_Object Vsystem_messages_locale;
174Lisp_Object Vprevious_system_messages_locale;
175Lisp_Object Vsystem_time_locale;
176Lisp_Object Vprevious_system_time_locale;
68c45bf0 177
7d0393cf 178/* If non-zero, emacs should not attempt to use a window-specific code,
7db35a48 179 but instead should use the virtual terminal under which it was started. */
f927c5ae
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180int inhibit_window_system;
181
5aa7f46a
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182/* If nonzero, set Emacs to run at this priority. This is also used
183 in child_setup and sys_suspend to make sure subshells run at normal
7db35a48 184 priority; those functions have their own extern declaration. */
31ade731 185EMACS_INT emacs_priority;
3005da00 186
7db35a48
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187/* If non-zero, a filter or a sentinel is running. Tested to save the match
188 data on the first attempt to change it inside asynchronous code. */
7074fde6
FP
189int running_asynch_code;
190
647cec74 191#ifdef BSD_PGRPS
9ae8f997
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192/* See sysdep.c. */
193extern int inherited_pgroup;
194#endif
195
f927c5ae 196#ifdef HAVE_X_WINDOWS
7db35a48 197/* If non-zero, -d was specified, meaning we're using some window system. */
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198int display_arg;
199#endif
200
201/* An address near the bottom of the stack.
202 Tells GC how to save a copy of the stack. */
203char *stack_bottom;
204
dede2792
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205/* The address where the heap starts (from the first sbrk (0) call). */
206static void *my_heap_start;
207
208/* The gap between BSS end and heap start as far as we can tell. */
209static unsigned long heap_bss_diff;
210
211/* If the gap between BSS end and heap start is larger than this we try to
212 work around it, and if that fails, output a warning in dump-emacs. */
213#define MAX_HEAP_BSS_DIFF (1024*1024)
214
215
8ba50e1a 216#ifdef HAVE_WINDOW_SYSTEM
f927c5ae 217extern Lisp_Object Vwindow_system;
8ba50e1a 218#endif /* HAVE_WINDOW_SYSTEM */
f927c5ae 219
1090a161
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220extern Lisp_Object Vauto_save_list_file_name;
221
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222extern Lisp_Object Vinhibit_redisplay;
223
f927c5ae
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224#ifdef USG_SHARED_LIBRARIES
225/* If nonzero, this is the place to put the end of the writable segment
226 at startup. */
227
228unsigned int bss_end = 0;
229#endif
230
231/* Nonzero means running Emacs without interactive terminal. */
232
233int noninteractive;
234
235/* Value of Lisp variable `noninteractive'.
236 Normally same as C variable `noninteractive'
237 but nothing terrible happens if user sets this one. */
238
239int noninteractive1;
e29f86e4
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240
241/* Save argv and argc. */
242char **initial_argv;
243int initial_argc;
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244
245static void sort_args ();
dfcf069d 246void syms_of_emacs ();
bd4590ba 247
f8125c39
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248/* MSVC needs each string be shorter than 2048 bytes, so the usage
249 strings below are split to not overflow this limit. */
73ebcd25 250#define USAGE1 "\
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251Usage: %s [OPTION-OR-FILENAME]...\n\
252\n\
253Run Emacs, the extensible, customizable, self-documenting real-time\n\
254display editor. The recommended way to start Emacs for normal editing\n\
255is with no options at all.\n\
256\n\
49ca717b 257Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
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258read the main documentation for these command-line arguments.\n\
259\n\
260Initialization options:\n\
261\n\
bb0b59bf
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262--batch do not do interactive display; implies -q\n\
263--debug-init enable Emacs Lisp debugger for init file\n\
264--display, -d DISPLAY use X server DISPLAY\n\
265--multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
266--no-desktop do not load a saved desktop\n\
267--no-init-file, -q load neither ~/.emacs nor default.el\n\
268--no-shared-memory, -nl do not use shared memory\n\
269--no-site-file do not load site-start.el\n\
270--no-splash do not display a splash screen on startup\n\
2ff86b4e 271--no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
bae52079 272--quick, -Q equivalent to -q --no-site-file --no-splash\n\
bb0b59bf
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273--script FILE run FILE as an Emacs Lisp script\n\
274--terminal, -t DEVICE use DEVICE for terminal I/O\n\
bd4590ba 275--unibyte, --no-multibyte run Emacs in unibyte mode\n\
bb0b59bf 276--user, -u USER load ~USER/.emacs instead of your own\n\
f8125c39
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277\n%s"
278
279#define USAGE2 "\
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280Action options:\n\
281\n\
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282FILE visit FILE using find-file\n\
283+LINE FILE visit FILE using find-file, then go to line LINE\n\
284+LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
285 column COLUMN\n\
286--directory, -L DIR add DIR to variable load-path\n\
287--eval EXPR evaluate Emacs Lisp expression EXPR\n\
288--execute EXPR evaluate Emacs Lisp expression EXPR\n\
289--file FILE visit FILE using find-file\n\
290--find-file FILE visit FILE using find-file\n\
291--funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
292--insert FILE insert contents of FILE into current buffer\n\
293--kill exit without asking for confirmation\n\
294--load, -l FILE load Emacs Lisp FILE using the load function\n\
295--visit FILE visit FILE using find-file\n\
73ebcd25
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296\n"
297
f8125c39 298#define USAGE3 "\
5b2ca26b 299Display options:\n\
bd4590ba 300\n\
bb0b59bf 301--background-color, -bg COLOR window background color\n\
2ff86b4e
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302--basic-display, -D disable many display features;\n\
303 used for debugging Emacs\n\
bb0b59bf
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304--border-color, -bd COLOR main border color\n\
305--border-width, -bw WIDTH width of main border\n\
ced74849 306--color, --color=MODE override color mode for character terminals;\n\
bb0b59bf
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307 MODE defaults to `auto', and can also\n\
308 be `never', `auto', `always',\n\
309 or a mode name like `ansi8'\n\
310--cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
311--font, -fn FONT default font; must be fixed-width\n\
312--foreground-color, -fg COLOR window foreground color\n\
313--fullheight, -fh make the first frame high as the screen\n\
314--fullscreen, -fs make first frame fullscreen\n\
315--fullwidth, -fw make the first frame wide as the screen\n\
316--geometry, -g GEOMETRY window geometry\n\
f9e36a6d 317--no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
bb0b59bf
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318--iconic start Emacs in iconified state\n\
319--internal-border, -ib WIDTH width between text and main border\n\
320--line-spacing, -lsp PIXELS additional space to put between lines\n\
321--mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
322--name NAME title for initial Emacs frame\n\
49ca717b 323--no-blinking-cursor, -nbc disable blinking cursor\n\
bb0b59bf
EZ
324--reverse-video, -r, -rv switch foreground and background\n\
325--title, -T TITLE title for initial Emacs frame\n\
326--vertical-scroll-bars, -vb enable vertical scroll bars\n\
327--xrm XRESOURCES set additional X resources\n\
328--help display this help and exit\n\
329--version output version information and exit\n\
07beadff
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330\n"
331
332#define USAGE4 "\
bd4590ba
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333You can generally also specify long option names with a single -; for\n\
334example, -batch as well as --batch. You can use any unambiguous\n\
335abbreviation for a --option.\n\
336\n\
337Various environment variables and window system resources also affect\n\
338Emacs' operation. See the main documentation.\n\
07beadff 339\n\
d883731c 340Report bugs to %s. First, please see the Bugs\n\
bd4590ba
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341section of the Emacs manual or the file BUGS.\n"
342
f927c5ae 343\f
7db35a48 344/* Signal code for the fatal signal that was received. */
f927c5ae
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345int fatal_error_code;
346
7db35a48 347/* Nonzero if handling a fatal error already. */
f927c5ae
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348int fatal_error_in_progress;
349
7db35a48 350/* If non-null, call this function from fatal_error_signal before
4fab758d
GM
351 committing suicide. */
352
353void (*fatal_error_signal_hook) P_ ((void));
354
333f1b6f
JD
355#ifdef HAVE_GTK_AND_PTHREAD
356/* When compiled with GTK and running under Gnome, multiple threads meay be
357 created. Keep track of our main thread to make sure signals are delivered
358 to it (see syssignal.h). */
359
360pthread_t main_thread;
361#endif
362
4fab758d 363
7db35a48 364/* Handle bus errors, invalid instruction, etc. */
2447c626 365SIGTYPE
f927c5ae
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366fatal_error_signal (sig)
367 int sig;
368{
333f1b6f 369 SIGNAL_THREAD_CHECK (sig);
f927c5ae
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370 fatal_error_code = sig;
371 signal (sig, SIG_DFL);
372
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373 TOTALLY_UNBLOCK_INPUT;
374
f927c5ae 375 /* If fatal error occurs in code below, avoid infinite recursion. */
8090eb09
JB
376 if (! fatal_error_in_progress)
377 {
378 fatal_error_in_progress = 1;
f927c5ae 379
f7ab4e3d 380 shut_down_emacs (sig, 0, Qnil);
8090eb09 381 }
f927c5ae
JB
382
383#ifdef VMS
f927c5ae
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384 LIB$STOP (SS$_ABORT);
385#else
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386 /* Signal the same code; this time it will really be fatal.
387 Remember that since we're in a signal handler, the signal we're
388 going to send is probably blocked, so we have to unblock it if we
389 want to really receive it. */
29b89fe0 390#ifndef MSDOS
a90538cb 391 sigunblock (sigmask (fatal_error_code));
29b89fe0 392#endif
4fab758d
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393
394 if (fatal_error_signal_hook)
395 fatal_error_signal_hook ();
7db35a48 396
f927c5ae
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397 kill (getpid (), fatal_error_code);
398#endif /* not VMS */
399}
271c7b7c
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400
401#ifdef SIGDANGER
402
16c323ee 403/* Handler for SIGDANGER. */
271c7b7c
RS
404SIGTYPE
405memory_warning_signal (sig)
406 int sig;
407{
408 signal (sig, memory_warning_signal);
333f1b6f 409 SIGNAL_THREAD_CHECK (sig);
271c7b7c
RS
410
411 malloc_warning ("Operating system warns that virtual memory is running low.\n");
55796183
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412
413 /* It might be unsafe to call do_auto_save now. */
414 force_auto_save_soon ();
271c7b7c
RS
415}
416#endif
fcf01ad3
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417
418/* We define abort, rather than using it from the library,
c9fe9cce 419 so that GDB can return from a breakpoint here.
7db35a48 420 MSDOS has its own definition in msdos.c. */
fcf01ad3 421
37e2fdd2 422#if ! defined (DOS_NT) && ! defined (NO_ABORT)
ca9c0567
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423
424#ifndef ABORT_RETURN_TYPE
425#define ABORT_RETURN_TYPE void
426#endif
427
428ABORT_RETURN_TYPE
fcf01ad3
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429abort ()
430{
431 kill (getpid (), SIGABRT);
37e2fdd2
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432 /* This shouldn't be executed, but it prevents a warning. */
433 exit (1);
fcf01ad3 434}
c9fe9cce 435#endif
fcf01ad3 436
f927c5ae 437\f
7db35a48 438/* Code for dealing with Lisp access to the Unix command line. */
f927c5ae 439
dfcf069d 440static void
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441init_cmdargs (argc, argv, skip_args)
442 int argc;
443 char **argv;
444 int skip_args;
445{
446 register int i;
213d0b1f 447 Lisp_Object name, dir, tem;
aed13378 448 int count = SPECPDL_INDEX ();
213d0b1f 449 Lisp_Object raw_name;
f927c5ae 450
e29f86e4
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451 initial_argv = argv;
452 initial_argc = argc;
453
213d0b1f
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454 raw_name = build_string (argv[0]);
455
456 /* Add /: to the front of the name
457 if it would otherwise be treated as magic. */
458 tem = Ffind_file_name_handler (raw_name, Qt);
459 if (! NILP (tem))
460 raw_name = concat2 (build_string ("/:"), raw_name);
461
462 Vinvocation_name = Ffile_name_nondirectory (raw_name);
463 Vinvocation_directory = Ffile_name_directory (raw_name);
464
ace40a69
RS
465 /* If we got no directory in argv[0], search PATH to find where
466 Emacs actually came from. */
467 if (NILP (Vinvocation_directory))
468 {
469 Lisp_Object found;
470 int yes = openp (Vexec_path, Vinvocation_name,
10c0915e 471 Vexec_suffixes, &found, make_number (X_OK));
e443f843 472 if (yes == 1)
213d0b1f
RS
473 {
474 /* Add /: to the front of the name
475 if it would otherwise be treated as magic. */
476 tem = Ffind_file_name_handler (found, Qt);
477 if (! NILP (tem))
478 found = concat2 (build_string ("/:"), found);
479 Vinvocation_directory = Ffile_name_directory (found);
480 }
ace40a69 481 }
59653951 482
4133b300
RS
483 if (!NILP (Vinvocation_directory)
484 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
213d0b1f
RS
485 /* Emacs was started with relative path, like ./emacs.
486 Make it absolute. */
4133b300
RS
487 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
488
07f4d123
RS
489 Vinstallation_directory = Qnil;
490
491 if (!NILP (Vinvocation_directory))
492 {
493 dir = Vinvocation_directory;
494 name = Fexpand_file_name (Vinvocation_name, dir);
495 while (1)
496 {
f5ab9736 497 Lisp_Object tem, lib_src_exists;
07f4d123
RS
498 Lisp_Object etc_exists, info_exists;
499
f5ab9736
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500 /* See if dir contains subdirs for use by Emacs.
501 Check for the ones that would exist in a build directory,
502 not including lisp and info. */
503 tem = Fexpand_file_name (build_string ("lib-src"), dir);
504 lib_src_exists = Ffile_exists_p (tem);
de004cc6 505
70344b34 506#ifdef MSDOS
de004cc6
RS
507 /* MSDOS installations frequently remove lib-src, but we still
508 must set installation-directory, or else info won't find
509 its files (it uses the value of installation-directory). */
510 tem = Fexpand_file_name (build_string ("info"), dir);
511 info_exists = Ffile_exists_p (tem);
70344b34
EZ
512#else
513 info_exists = Qnil;
514#endif
de004cc6
RS
515
516 if (!NILP (lib_src_exists) || !NILP (info_exists))
07f4d123 517 {
f5ab9736
RS
518 tem = Fexpand_file_name (build_string ("etc"), dir);
519 etc_exists = Ffile_exists_p (tem);
520 if (!NILP (etc_exists))
07f4d123 521 {
f5ab9736
RS
522 Vinstallation_directory
523 = Ffile_name_as_directory (dir);
524 break;
07f4d123
RS
525 }
526 }
527
528 /* See if dir's parent contains those subdirs. */
f5ab9736
RS
529 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
530 lib_src_exists = Ffile_exists_p (tem);
de004cc6 531
70344b34
EZ
532
533#ifdef MSDOS
534 /* See the MSDOS commentary above. */
de004cc6
RS
535 tem = Fexpand_file_name (build_string ("../info"), dir);
536 info_exists = Ffile_exists_p (tem);
70344b34
EZ
537#else
538 info_exists = Qnil;
539#endif
de004cc6
RS
540
541 if (!NILP (lib_src_exists) || !NILP (info_exists))
07f4d123 542 {
f5ab9736
RS
543 tem = Fexpand_file_name (build_string ("../etc"), dir);
544 etc_exists = Ffile_exists_p (tem);
545 if (!NILP (etc_exists))
07f4d123 546 {
f5ab9736
RS
547 tem = Fexpand_file_name (build_string (".."), dir);
548 Vinstallation_directory
549 = Ffile_name_as_directory (tem);
550 break;
07f4d123
RS
551 }
552 }
553
554 /* If the Emacs executable is actually a link,
555 next try the dir that the link points into. */
556 tem = Ffile_symlink_p (name);
557 if (!NILP (tem))
558 {
260ec24d 559 name = Fexpand_file_name (tem, dir);
07f4d123
RS
560 dir = Ffile_name_directory (name);
561 }
562 else
563 break;
564 }
565 }
566
f927c5ae
JB
567 Vcommand_line_args = Qnil;
568
569 for (i = argc - 1; i >= 0; i--)
570 {
571 if (i == 0 || i > skip_args)
a520393d
KH
572 /* For the moment, we keep arguments as is in unibyte strings.
573 They are decoded in the function command-line after we know
574 locale-coding-system. */
f927c5ae 575 Vcommand_line_args
68db37aa 576 = Fcons (make_unibyte_string (argv[i], strlen (argv[i])),
a520393d 577 Vcommand_line_args);
f927c5ae 578 }
213d0b1f
RS
579
580 unbind_to (count, Qnil);
f927c5ae 581}
59653951
JB
582
583DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
7db35a48
PJ
584 doc: /* Return the program name that was used to run Emacs.
585Any directory names are omitted. */)
586 ()
59653951
JB
587{
588 return Fcopy_sequence (Vinvocation_name);
589}
590
ace40a69 591DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
7db35a48
PJ
592 0, 0, 0,
593 doc: /* Return the directory name in which the Emacs executable was located. */)
594 ()
ace40a69
RS
595{
596 return Fcopy_sequence (Vinvocation_directory);
597}
598
f927c5ae
JB
599\f
600#ifdef VMS
601#ifdef LINK_CRTL_SHARE
34035df3 602#ifdef SHARABLE_LIB_BUG
f927c5ae 603extern noshare char **environ;
34035df3 604#endif /* SHARABLE_LIB_BUG */
f927c5ae
JB
605#endif /* LINK_CRTL_SHARE */
606#endif /* VMS */
607
0269dedb
RS
608#ifdef HAVE_TZSET
609/* A valid but unlikely value for the TZ environment value.
610 It is OK (though a bit slower) if the user actually chooses this value. */
611static char dump_tz[] = "UtC0";
612#endif
613
a90538cb 614#ifndef ORDINARY_LINK
efd241cc
RS
615/* We don't include crtbegin.o and crtend.o in the link,
616 so these functions and variables might be missed.
617 Provide dummy definitions to avoid error.
618 (We don't have any real constructors or destructors.) */
619#ifdef __GNUC__
46e65b73 620#ifndef GCC_CTORS_IN_LIBC
dfcf069d 621void __do_global_ctors ()
efd241cc 622{}
dfcf069d 623void __do_global_ctors_aux ()
c83a7064 624{}
dfcf069d 625void __do_global_dtors ()
33143604 626{}
554061d8 627/* GNU/Linux has a bug in its library; avoid an error. */
8a2a6032 628#ifndef GNU_LINUX
c83a7064 629char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
64c1864a 630#endif
c83a7064 631char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
46e65b73 632#endif /* GCC_CTORS_IN_LIBC */
dfcf069d 633void __main ()
efd241cc 634{}
efd241cc 635#endif /* __GNUC__ */
a90538cb 636#endif /* ORDINARY_LINK */
efd241cc 637
e2925360
KH
638/* Test whether the next argument in ARGV matches SSTR or a prefix of
639 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
640 (the argument is supposed to have a value) store in *VALPTR either
641 the next argument or the portion of this one after the equal sign.
642 ARGV is read starting at position *SKIPPTR; this index is advanced
643 by the number of arguments used.
644
645 Too bad we can't just use getopt for all of this, but we don't have
646 enough information to do it right. */
081bef73 647
e2925360 648static int
df6530f8 649argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
e2925360 650 char **argv;
df6530f8 651 int argc;
e2925360
KH
652 char *sstr;
653 char *lstr;
654 int minlen;
655 char **valptr;
656 int *skipptr;
657{
6bbd7a29 658 char *p = NULL;
e2925360 659 int arglen;
df6530f8
RS
660 char *arg;
661
662 /* Don't access argv[argc]; give up in advance. */
663 if (argc <= *skipptr + 1)
664 return 0;
665
666 arg = argv[*skipptr+1];
e2925360
KH
667 if (arg == NULL)
668 return 0;
669 if (strcmp (arg, sstr) == 0)
670 {
671 if (valptr != NULL)
672 {
673 *valptr = argv[*skipptr+2];
674 *skipptr += 2;
675 }
676 else
677 *skipptr += 1;
678 return 1;
679 }
680 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
681 ? p - arg : strlen (arg));
c03e1113 682 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
e2925360
KH
683 return 0;
684 else if (valptr == NULL)
685 {
686 *skipptr += 1;
687 return 1;
688 }
689 else if (p != NULL)
690 {
691 *valptr = p+1;
692 *skipptr += 1;
693 return 1;
694 }
695 else if (argv[*skipptr+2] != NULL)
696 {
697 *valptr = argv[*skipptr+2];
698 *skipptr += 2;
699 return 1;
700 }
701 else
702 {
703 return 0;
704 }
705}
706
b6779252 707#ifdef DOUG_LEA_MALLOC
f927c5ae 708
b6779252
KH
709/* malloc can be invoked even before main (e.g. by the dynamic
710 linker), so the dumped malloc state must be restored as early as
711 possible using this special hook. */
712
713static void
714malloc_initialize_hook ()
715{
1f9c3929 716#ifndef USE_CRT_DLL
b6779252 717 extern char **environ;
1f9c3929 718#endif
6000fe37 719
15aaf1b5
RS
720 if (initialized)
721 {
7c9cd446
AS
722 if (!malloc_using_checking)
723 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
724 ignored if the heap to be restored was constructed without
d942e12a
AS
725 malloc checking. Can't use unsetenv, since that calls malloc. */
726 {
727 char **p;
728
a57c4026 729 for (p = environ; p && *p; p++)
d942e12a
AS
730 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
731 {
732 do
733 *p = p[1];
734 while (*++p);
735 break;
736 }
737 }
b6779252 738
15aaf1b5 739 malloc_set_state (malloc_state_ptr);
68db37aa 740#ifndef XMALLOC_OVERRUN_CHECK
15aaf1b5 741 free (malloc_state_ptr);
68db37aa 742#endif
15aaf1b5 743 }
7c9cd446 744 else
dede2792
JD
745 {
746 if (my_heap_start == 0)
747 my_heap_start = sbrk (0);
748 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
749 }
b6779252
KH
750}
751
752void (*__malloc_initialize_hook) () = malloc_initialize_hook;
753
754#endif /* DOUG_LEA_MALLOC */
755
d883731c
PJ
756
757#define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
758#define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
759
760/* This function is used to determine an address to which bug report should
761 be sent. */
762
400d6fa9
PJ
763char *
764bug_reporting_address ()
d883731c 765{
400d6fa9 766 int count = 0;
d883731c
PJ
767 Lisp_Object temp;
768 char *string;
769
770 temp = Fsymbol_value (intern ("emacs-version"));
771
772 /* When `emacs-version' is invalid, use normal address. */
773 if (!STRINGP(temp))
774 return REPORT_EMACS_BUG_ADDRESS;
775
d5db4077 776 string = SDATA (temp);
d883731c 777
400d6fa9
PJ
778 /* Count dots in `emacs-version'. */
779 while (*string)
780 {
781 if (*string == '.')
782 count++;
783 string++;
784 }
d883731c
PJ
785
786 /* When `emacs-version' has at least three dots, it is development or
787 pretest version of Emacs. */
400d6fa9 788 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
d883731c
PJ
789}
790
791
b6779252
KH
792/* ARGSUSED */
793int
3861bdcd
DL
794main (argc, argv
795#ifdef VMS
796, envp
797#endif
798)
b6779252
KH
799 int argc;
800 char **argv;
3861bdcd 801#ifdef VMS
b6779252 802 char **envp;
3861bdcd 803#endif
b6779252 804{
2313132f 805#if GC_MARK_STACK
39ec21ea
GM
806 Lisp_Object dummy;
807#endif
b6779252 808 char stack_bottom_variable;
68c45bf0 809 int do_initial_setlocale;
b6779252 810 int skip_args = 0;
1f9c3929 811#ifndef USE_CRT_DLL
b6779252 812 extern int errno;
1f9c3929 813#endif
b6779252
KH
814#ifdef HAVE_SETRLIMIT
815 struct rlimit rlim;
816#endif
817 int no_loadup = 0;
6e910e07 818 char *junk = 0;
b6779252 819
2313132f 820#if GC_MARK_STACK
39ec21ea
GM
821 extern Lisp_Object *stack_base;
822 stack_base = &dummy;
823#endif
824
dede2792
JD
825 if (!initialized)
826 {
827 extern char my_endbss[];
828 extern char *my_endbss_static;
829
830 if (my_heap_start == 0)
831 my_heap_start = sbrk (0);
832
833 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
834 }
835
b6779252
KH
836#ifdef LINUX_SBRK_BUG
837 __sbrk (1);
15aaf1b5
RS
838#endif
839
d785cf9e
RS
840#ifdef RUN_TIME_REMAP
841 if (initialized)
842 run_time_remap (argv[0]);
843#endif
844
3fb79984 845#ifdef MAC_OSX
e0f712ba
AC
846 if (!initialized)
847 unexec_init_emacs_zone ();
848#endif
849
081bef73 850 sort_args (argc, argv);
956e3c7e
RS
851 argc = 0;
852 while (argv[argc]) argc++;
081bef73 853
3270ae6e
KH
854 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
855 /* We don't know the version number unless this is a dumped Emacs.
856 So ignore --version otherwise. */
857 && initialized)
1702afef
RS
858 {
859 Lisp_Object tem;
860 tem = Fsymbol_value (intern ("emacs-version"));
861 if (!STRINGP (tem))
862 {
863 fprintf (stderr, "Invalid value of `emacs-version'\n");
864 exit (1);
865 }
866 else
867 {
d5db4077 868 printf ("GNU Emacs %s\n", SDATA (tem));
4e6835db 869 printf ("Copyright (C) 2007 Free Software Foundation, Inc.\n");
b455c665
RS
870 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
871 printf ("You may redistribute copies of Emacs\n");
872 printf ("under the terms of the GNU General Public License.\n");
873 printf ("For more information about these matters, ");
94487c4e 874 printf ("see the file named COPYING.\n");
1702afef
RS
875 exit (0);
876 }
877 }
878
dede2792
JD
879#ifdef HAVE_PERSONALITY_LINUX32
880 /* See if there is a gap between the end of BSS and the heap.
881 In that case, set personality and exec ourself again. */
882 if (!initialized
883 && (strcmp (argv[argc-1], "dump") == 0
884 || strcmp (argv[argc-1], "bootstrap") == 0)
885 && heap_bss_diff > MAX_HEAP_BSS_DIFF)
886 {
887 if (! getenv ("EMACS_HEAP_EXEC"))
888 {
889 /* Set this so we only do this once. */
890 putenv("EMACS_HEAP_EXEC=true");
711877f3
MY
891
892 /* A flag to turn off address randomization which is introduced
893 in linux kernel shipped with fedora core 4 */
894#define ADD_NO_RANDOMIZE 0x0040000
895 personality (PER_LINUX32 | ADD_NO_RANDOMIZE);
896#undef ADD_NO_RANDOMIZE
897
dede2792
JD
898 execvp (argv[0], argv);
899
900 /* If the exec fails, try to dump anyway. */
901 perror ("execvp");
902 }
903 }
904#endif /* HAVE_PERSONALITY_LINUX32 */
905
906
f927c5ae
JB
907/* Map in shared memory, if we are using that. */
908#ifdef HAVE_SHM
df6530f8 909 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
f927c5ae
JB
910 {
911 map_in_data (0);
912 /* The shared memory was just restored, which clobbered this. */
913 skip_args = 1;
914 }
915 else
916 {
917 map_in_data (1);
918 /* The shared memory was just restored, which clobbered this. */
919 skip_args = 0;
920 }
921#endif
922
19a36ec6 923#ifdef NeXT
b9df9faa
KH
924 {
925 extern int malloc_cookie;
926 /* This helps out unexnext.c. */
927 if (initialized)
928 if (malloc_jumpstart (malloc_cookie) != 0)
929 printf ("malloc jumpstart failed!\n");
930 }
19a36ec6
RS
931#endif /* NeXT */
932
e0f712ba
AC
933#ifdef MAC_OSX
934 /* Skip process serial number passed in the form -psn_x_y as
a4f8f6cf
YM
935 command-line argument. The WindowServer adds this option when
936 Emacs is invoked from the Finder or by the `open' command. In
937 these cases, the working directory becomes `/', so we change it
938 to the user's home directory. */
e0f712ba 939 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
a4f8f6cf
YM
940 {
941 chdir (getenv ("HOME"));
942 skip_args++;
943 }
e0f712ba
AC
944#endif /* MAC_OSX */
945
f927c5ae 946#ifdef VMS
7db35a48 947 /* If -map specified, map the data file in. */
e2925360
KH
948 {
949 char *file;
70646bb5 950 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args))
e2925360
KH
951 mapin_data (file);
952 }
f927c5ae
JB
953
954#ifdef LINK_CRTL_SHARE
34035df3 955#ifdef SHARABLE_LIB_BUG
7db35a48 956 /* Bletcherous shared libraries! */
f927c5ae
JB
957 if (!stdin)
958 stdin = fdopen (0, "r");
959 if (!stdout)
960 stdout = fdopen (1, "w");
961 if (!stderr)
962 stderr = fdopen (2, "w");
963 if (!environ)
964 environ = envp;
34035df3 965#endif /* SHARABLE_LIB_BUG */
f927c5ae
JB
966#endif /* LINK_CRTL_SHARE */
967#endif /* VMS */
968
ea2acec5 969#if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
6c2935e9
RS
970 /* Extend the stack space available.
971 Don't do that if dumping, since some systems (e.g. DJGPP)
972 might define a smaller stack limit at that time. */
973 if (1
974#ifndef CANNOT_DUMP
975 && (!noninteractive || initialized)
976#endif
977 && !getrlimit (RLIMIT_STACK, &rlim))
53c58b5d 978 {
509a8fcd 979 long newlim;
fa8459a3 980 extern size_t re_max_failures;
03effc23
KH
981 /* Approximate the amount regex.c needs per unit of re_max_failures. */
982 int ratio = 20 * sizeof (char *);
983 /* Then add 33% to cover the size of the smaller stacks that regex.c
984 successively allocates and discards, on its way to the maximum. */
985 ratio += ratio / 3;
986 /* Add in some extra to cover
987 what we're likely to use for other reasons. */
988 newlim = re_max_failures * ratio + 200000;
d0381a7f
RS
989#ifdef __NetBSD__
990 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
991 stack allocation routine for new process that the allocation
992 fails if stack limit is not on page boundary. So, round up the
993 new limit to page boundary. */
994 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
995#endif
509a8fcd 996 if (newlim > rlim.rlim_max)
6c2935e9
RS
997 {
998 newlim = rlim.rlim_max;
03effc23
KH
999 /* Don't let regex.c overflow the stack we have. */
1000 re_max_failures = (newlim - 200000) / ratio;
6c2935e9 1001 }
509a8fcd
RS
1002 if (rlim.rlim_cur < newlim)
1003 rlim.rlim_cur = newlim;
1004
53c58b5d
RS
1005 setrlimit (RLIMIT_STACK, &rlim);
1006 }
ea2acec5 1007#endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
53c58b5d 1008
f927c5ae
JB
1009 /* Record (approximately) where the stack begins. */
1010 stack_bottom = &stack_bottom_variable;
1011
f927c5ae
JB
1012#ifdef USG_SHARED_LIBRARIES
1013 if (bss_end)
1d233b80 1014 brk ((void *)bss_end);
f927c5ae
JB
1015#endif
1016
1017 clearerr (stdin);
9ae8f997 1018
f927c5ae 1019#ifndef SYSTEM_MALLOC
bf7f4e90
RS
1020 /* Arrange to get warning messages as memory fills up. */
1021 memory_warnings (0, malloc_warning);
9ac0d9e0 1022
f5a3c8c4
AI
1023 /* Call malloc at least once, to run the initial __malloc_hook.
1024 Also call realloc and free for consistency. */
1025 free (realloc (malloc (4), 4));
bf7f4e90 1026
06ca62eb 1027# ifndef SYNC_INPUT
bf7f4e90
RS
1028 /* Arrange to disable interrupt input inside malloc etc. */
1029 uninterrupt_malloc ();
06ca62eb 1030# endif /* not SYNC_INPUT */
f927c5ae
JB
1031#endif /* not SYSTEM_MALLOC */
1032
333f1b6f
JD
1033#ifdef HAVE_GTK_AND_PTHREAD
1034 main_thread = pthread_self ();
1035#endif /* HAVE_GTK_AND_PTHREAD */
1036
edd3ff1d 1037#if defined (MSDOS) || defined (WINDOWSNT)
29b89fe0
RS
1038 /* We do all file input/output as binary files. When we need to translate
1039 newlines, we do that manually. */
1040 _fmode = O_BINARY;
edd3ff1d 1041#endif /* MSDOS || WINDOWSNT */
18198bb2 1042
edd3ff1d 1043#ifdef MSDOS
18198bb2
RS
1044#if __DJGPP__ >= 2
1045 if (!isatty (fileno (stdin)))
1046 setmode (fileno (stdin), O_BINARY);
1047 if (!isatty (fileno (stdout)))
1048 {
1049 fflush (stdout);
1050 setmode (fileno (stdout), O_BINARY);
1051 }
1052#else /* not __DJGPP__ >= 2 */
29b89fe0
RS
1053 (stdin)->_flag &= ~_IOTEXT;
1054 (stdout)->_flag &= ~_IOTEXT;
1055 (stderr)->_flag &= ~_IOTEXT;
18198bb2 1056#endif /* not __DJGPP__ >= 2 */
29b89fe0
RS
1057#endif /* MSDOS */
1058
a422068f 1059#ifdef SET_EMACS_PRIORITY
3005da00 1060 if (emacs_priority)
5aa7f46a 1061 nice (emacs_priority);
f927c5ae 1062 setuid (getuid ());
a422068f 1063#endif /* SET_EMACS_PRIORITY */
f927c5ae 1064
68c45bf0
PE
1065 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1066 The build procedure uses this while dumping, to ensure that the
1067 dumped Emacs does not have its system locale tables initialized,
1068 as that might cause screwups when the dumped Emacs starts up. */
1069 {
1070 char *lc_all = getenv ("LC_ALL");
1071 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
1072 }
1073
1074 /* Set locale now, so that initial error messages are localized properly.
1075 fixup_locale must wait until later, since it builds strings. */
1076 if (do_initial_setlocale)
1077 setlocale (LC_ALL, "");
1078
d8b3a65d 1079#ifdef EXTRA_INITIALIZE
a9260219 1080 EXTRA_INITIALIZE;
d8b3a65d
RS
1081#endif
1082
f927c5ae
JB
1083 inhibit_window_system = 0;
1084
7db35a48 1085 /* Handle the -t switch, which specifies filename to use as terminal. */
956e3c7e
RS
1086 while (1)
1087 {
1088 char *term;
1089 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1090 {
1091 int result;
68c45bf0
PE
1092 emacs_close (0);
1093 emacs_close (1);
1094 result = emacs_open (term, O_RDWR, 0);
956e3c7e
RS
1095 if (result < 0)
1096 {
1097 char *errstring = strerror (errno);
186486eb 1098 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
956e3c7e
RS
1099 exit (1);
1100 }
1101 dup (0);
1102 if (! isatty (0))
1103 {
186486eb 1104 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
956e3c7e
RS
1105 exit (1);
1106 }
1107 fprintf (stderr, "Using %s\n", term);
8ba50e1a 1108#ifdef HAVE_WINDOW_SYSTEM
956e3c7e 1109 inhibit_window_system = 1; /* -t => -nw */
f927c5ae 1110#endif
956e3c7e
RS
1111 }
1112 else
1113 break;
1114 }
1115
400d6fa9
PJ
1116 /* Command line option --no-windows is deprecated and thus not mentioned
1117 in the manual and usage informations. */
1118 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1119 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
e2925360 1120 inhibit_window_system = 1;
f927c5ae 1121
e2925360 1122 /* Handle the -batch switch, which means don't do interactive display. */
f927c5ae 1123 noninteractive = 0;
df6530f8 1124 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
55f4edbc
RS
1125 {
1126 noninteractive = 1;
1127 Vundo_outer_limit = Qnil;
1128 }
6e910e07
RS
1129 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1130 {
1131 noninteractive = 1; /* Set batch mode. */
e09b9180
RS
1132 /* Convert --script to --scriptload, un-skip it, and sort again
1133 so that it will be handled in proper sequence. */
1134 argv[skip_args - 1] = "-scriptload";
6e910e07
RS
1135 skip_args -= 2;
1136 sort_args (argc, argv);
1137 }
e2925360 1138
7db35a48 1139 /* Handle the --help option, which gives a usage message. */
df6530f8 1140 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
f927c5ae 1141 {
f8125c39
EZ
1142 printf (USAGE1, argv[0], USAGE2);
1143 printf (USAGE3);
1144 printf (USAGE4, bug_reporting_address ());
e2925360 1145 exit (0);
f927c5ae
JB
1146 }
1147
edb85f59
RS
1148 if (! noninteractive)
1149 {
1150#ifdef BSD_PGRPS
1151 if (initialized)
1152 {
1153 inherited_pgroup = EMACS_GETPGRP (0);
1154 setpgrp (0, getpid ());
1155 }
1156#else
1157#if defined (USG5) && defined (INTERRUPT_INPUT)
1158 setpgrp ();
1159#endif
1160#endif
1161 }
1162
fb8e9847 1163 init_signals ();
fb8e9847 1164
1efa2983
KH
1165 /* Don't catch SIGHUP if dumping. */
1166 if (1
1167#ifndef CANNOT_DUMP
1168 && initialized
1169#endif
1170 )
1171 {
57e3d22a 1172 sigblock (sigmask (SIGHUP));
1efa2983
KH
1173 /* In --batch mode, don't catch SIGHUP if already ignored.
1174 That makes nohup work. */
1175 if (! noninteractive
1176 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1177 signal (SIGHUP, fatal_error_signal);
57e3d22a 1178 sigunblock (sigmask (SIGHUP));
1efa2983
KH
1179 }
1180
f927c5ae
JB
1181 if (
1182#ifndef CANNOT_DUMP
1183 ! noninteractive || initialized
1184#else
1185 1
1186#endif
1187 )
1188 {
1efa2983 1189 /* Don't catch these signals in batch mode if dumping.
f927c5ae
JB
1190 On some machines, this sets static data that would make
1191 signal fail to work right when the dumped Emacs is run. */
f927c5ae
JB
1192 signal (SIGQUIT, fatal_error_signal);
1193 signal (SIGILL, fatal_error_signal);
1194 signal (SIGTRAP, fatal_error_signal);
7317d9e8 1195#ifdef SIGUSR1
71b28d05 1196 add_user_signal (SIGUSR1, "sigusr1");
7317d9e8 1197#endif
8247c60d 1198#ifdef SIGUSR2
71b28d05 1199 add_user_signal (SIGUSR2, "sigusr2");
7317d9e8 1200#endif
99e372cd
RS
1201#ifdef SIGABRT
1202 signal (SIGABRT, fatal_error_signal);
1203#endif
1204#ifdef SIGHWE
1205 signal (SIGHWE, fatal_error_signal);
1206#endif
1207#ifdef SIGPRE
1208 signal (SIGPRE, fatal_error_signal);
1209#endif
1210#ifdef SIGORE
1211 signal (SIGORE, fatal_error_signal);
1212#endif
1213#ifdef SIGUME
1214 signal (SIGUME, fatal_error_signal);
1215#endif
1216#ifdef SIGDLK
1217 signal (SIGDLK, fatal_error_signal);
1218#endif
1219#ifdef SIGCPULIM
1220 signal (SIGCPULIM, fatal_error_signal);
1221#endif
a90538cb
JB
1222#ifdef SIGIOT
1223 /* This is missing on some systems - OS/2, for example. */
f927c5ae 1224 signal (SIGIOT, fatal_error_signal);
a90538cb 1225#endif
f927c5ae
JB
1226#ifdef SIGEMT
1227 signal (SIGEMT, fatal_error_signal);
1228#endif
1229 signal (SIGFPE, fatal_error_signal);
00eaaa32 1230#ifdef SIGBUS
f927c5ae 1231 signal (SIGBUS, fatal_error_signal);
00eaaa32 1232#endif
f927c5ae 1233 signal (SIGSEGV, fatal_error_signal);
00eaaa32 1234#ifdef SIGSYS
f927c5ae 1235 signal (SIGSYS, fatal_error_signal);
00eaaa32 1236#endif
f927c5ae
JB
1237 signal (SIGTERM, fatal_error_signal);
1238#ifdef SIGXCPU
1239 signal (SIGXCPU, fatal_error_signal);
1240#endif
1241#ifdef SIGXFSZ
1242 signal (SIGXFSZ, fatal_error_signal);
1243#endif /* SIGXFSZ */
1244
271c7b7c
RS
1245#ifdef SIGDANGER
1246 /* This just means available memory is getting low. */
1247 signal (SIGDANGER, memory_warning_signal);
1248#endif
1249
f927c5ae 1250#ifdef AIX
56e034fa
RS
1251/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1252 signal (SIGXCPU, fatal_error_signal);
0aef8561 1253#ifndef _I386
f927c5ae 1254 signal (SIGIOINT, fatal_error_signal);
0aef8561 1255#endif
f927c5ae
JB
1256 signal (SIGGRANT, fatal_error_signal);
1257 signal (SIGRETRACT, fatal_error_signal);
1258 signal (SIGSOUND, fatal_error_signal);
1259 signal (SIGMSG, fatal_error_signal);
1260#endif /* AIX */
1261 }
1262
1263 noninteractive1 = noninteractive;
1264
7db35a48 1265/* Perform basic initializations (not merely interning symbols). */
f927c5ae
JB
1266
1267 if (!initialized)
1268 {
1269 init_alloc_once ();
1270 init_obarray ();
1271 init_eval_once ();
270ce821
KH
1272 init_charset_once ();
1273 init_coding_once ();
f927c5ae 1274 init_syntax_once (); /* Create standard syntax table. */
270ce821 1275 init_category_once (); /* Create standard category table. */
7db35a48 1276 /* Must be done before init_buffer. */
f927c5ae 1277 init_casetab_once ();
7db35a48
PJ
1278 init_buffer_once (); /* Create buffer table and some buffers. */
1279 init_minibuf_once (); /* Create list of minibuffers. */
1280 /* Must precede init_window_once. */
1281
90d920b6
GM
1282 /* Call syms_of_xfaces before init_window_once because that
1283 function creates Vterminal_frame. Termcap frames now use
1284 faces, and the face implementation uses some symbols as
1285 face names. */
90d920b6 1286 syms_of_xfaces ();
7a18af49
KR
1287 /* Call syms_of_keyboard before init_window_once because
1288 keyboard sets up symbols that include some face names that
1289 the X support will want to use. This can happen when
1290 CANNOT_DUMP is defined. */
1291 syms_of_keyboard ();
90d920b6 1292
e0f712ba 1293#ifdef MAC_OS8
c1e279c2
AC
1294 /* init_window_once calls make_terminal_frame which on Mac OS
1295 creates a full-fledge output_mac type frame. This does not
1296 work correctly before syms_of_textprop, syms_of_macfns,
1297 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
b15325b2 1298 syms_of_frame, mac_term_init, and init_keyboard have already
c1e279c2 1299 been called. */
1a578e9b
AC
1300 syms_of_textprop ();
1301 syms_of_macfns ();
1302 syms_of_ccl ();
1303 syms_of_fontset ();
1304 syms_of_macterm ();
1305 syms_of_macmenu ();
ab271aca 1306 syms_of_macselect ();
1a578e9b
AC
1307 syms_of_data ();
1308 syms_of_search ();
c1e279c2 1309 syms_of_frame ();
7db35a48 1310
34e1bbc2 1311 init_atimer ();
b15325b2 1312 mac_term_init (build_string ("Mac"), NULL, NULL);
1a578e9b
AC
1313 init_keyboard ();
1314#endif
1315
7db35a48 1316 init_window_once (); /* Init the window system. */
680256a8 1317 init_fileio_once (); /* Must precede any path manipulation. */
0fc4c63e
KS
1318#ifdef HAVE_WINDOW_SYSTEM
1319 init_fringe_once (); /* Swap bitmaps if necessary. */
1320#endif /* HAVE_WINDOW_SYSTEM */
f927c5ae
JB
1321 }
1322
1323 init_alloc ();
68c45bf0
PE
1324
1325 if (do_initial_setlocale)
1326 {
1327 fixup_locale ();
ca9c0567
PE
1328 Vsystem_messages_locale = Vprevious_system_messages_locale;
1329 Vsystem_time_locale = Vprevious_system_time_locale;
68c45bf0
PE
1330 }
1331
f927c5ae
JB
1332 init_eval ();
1333 init_data ();
ad067ea6 1334#ifdef CLASH_DETECTION
01f67d2c 1335 init_filelock ();
ad067ea6 1336#endif
34e1bbc2 1337#ifndef MAC_OS8
ab5d0358 1338 init_atimer ();
34e1bbc2 1339#endif
7074fde6 1340 running_asynch_code = 0;
0e956009 1341
a08a816a
RS
1342 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1343 but not while dumping. */
e721aa94 1344 if (1)
a08a816a
RS
1345 {
1346 int inhibit_unibyte = 0;
1347
1348 /* --multibyte overrides EMACS_UNIBYTE. */
1349 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
e721aa94
SM
1350 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1351 /* Ignore EMACS_UNIBYTE before dumping. */
1352 || (!initialized && noninteractive))
a08a816a
RS
1353 inhibit_unibyte = 1;
1354
1355 /* --unibyte requests that we set up to do everything with single-byte
1356 buffers and strings. We need to handle this before calling
1357 init_lread, init_editfns and other places that generate Lisp strings
1358 from text in the environment. */
c0218e1b
DL
1359 /* Actually this shouldn't be needed as of 20.4 in a generally
1360 unibyte environment. As handa says, environment values
1361 aren't now decoded; also existing buffers are now made
1362 unibyte during startup if .emacs sets unibyte. Tested with
1363 8-bit data in environment variables and /etc/passwd, setting
7db35a48 1364 unibyte and Latin-1 in .emacs. -- Dave Love */
a08a816a
RS
1365 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1366 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1367 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1368 {
1369 Lisp_Object old_log_max;
1370 Lisp_Object symbol, tail;
1371
1372 symbol = intern ("default-enable-multibyte-characters");
1373 Fset (symbol, Qnil);
1374
6524291c
KH
1375 if (initialized)
1376 {
1377 /* Erase pre-dump messages in *Messages* now so no abort. */
1378 old_log_max = Vmessage_log_max;
1379 XSETFASTINT (Vmessage_log_max, 0);
1380 message_dolog ("", 0, 1, 0);
1381 Vmessage_log_max = old_log_max;
1382 }
a08a816a 1383
3e75bb9e 1384 for (tail = Vbuffer_alist; CONSP (tail);
7539e11f 1385 tail = XCDR (tail))
a08a816a
RS
1386 {
1387 Lisp_Object buffer;
1388
7539e11f 1389 buffer = Fcdr (XCAR (tail));
a08a816a
RS
1390 /* Verify that all buffers are empty now, as they
1391 ought to be. */
1392 if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
1393 abort ();
1394 /* It is safe to do this crudely in an empty buffer. */
1395 XBUFFER (buffer)->enable_multibyte_characters = Qnil;
1396 }
1397 }
1398 }
1399
956e3c7e 1400 no_loadup
b96f9fb7 1401 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
956e3c7e
RS
1402
1403
1404#ifdef HAVE_X_WINDOWS
1405 /* Stupid kludge to catch command-line display spec. We can't
1406 handle this argument entirely in window system dependent code
1407 because we don't even know which window system dependent code
1408 to run until we've recognized this argument. */
1409 {
1410 char *displayname = 0;
956e3c7e
RS
1411 int count_before = skip_args;
1412
1413 /* Skip any number of -d options, but only use the last one. */
1414 while (1)
1415 {
1416 int count_before_this = skip_args;
1417
1418 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1419 display_arg = 1;
1420 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1421 display_arg = 1;
1422 else
1423 break;
1424
1425 count_before = count_before_this;
1426 }
1427
1428 /* If we have the form --display=NAME,
1429 convert it into -d name.
1430 This requires inserting a new element into argv. */
1431 if (displayname != 0 && skip_args - count_before == 1)
1432 {
1433 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1434 int j;
1435
1436 for (j = 0; j < count_before + 1; j++)
1437 new[j] = argv[j];
1438 new[count_before + 1] = "-d";
1439 new[count_before + 2] = displayname;
1440 for (j = count_before + 2; j <argc; j++)
1441 new[j + 1] = argv[j];
1442 argv = new;
1443 argc++;
1444 }
1445 /* Change --display to -d, when its arg is separate. */
1446 else if (displayname != 0 && skip_args > count_before
1447 && argv[count_before + 1][1] == '-')
1448 argv[count_before + 1] = "-d";
1449
1450 /* Don't actually discard this arg. */
1451 skip_args = count_before;
1452 }
1453#endif
1454
1455 /* argmatch must not be used after here,
1456 except when bulding temacs
1457 because the -d argument has not been skipped in skip_args. */
1458
29b89fe0
RS
1459#ifdef MSDOS
1460 /* Call early 'cause init_environment needs it. */
1461 init_dosfns ();
1462 /* Set defaults for several environment variables. */
18198bb2
RS
1463 if (initialized)
1464 init_environment (argc, argv, skip_args);
1465 else
d1fc6752 1466 tzset ();
18198bb2 1467#endif /* MSDOS */
29b89fe0 1468
8ba50e1a 1469#ifdef WINDOWSNT
9785d95b 1470 globals_of_w32 ();
8ba50e1a 1471 /* Initialize environment from registry settings. */
a3a58294 1472 init_environment (argv);
7db35a48 1473 init_ntproc (); /* must precede init_editfns. */
8ba50e1a
GV
1474#endif
1475
3ec33130 1476#if defined (MAC_OSX) && defined (HAVE_CARBON)
1000788b
AC
1477 if (initialized)
1478 init_mac_osx_environment ();
1479#endif
1480
0e956009
JB
1481 /* egetenv is a pretty low-level facility, which may get called in
1482 many circumstances; it seems flimsy to put off initializing it
1483 until calling init_callproc. */
1484 set_process_environment ();
93aed04d
RS
1485 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1486 if this is not done. Do it after set_process_environment so that we
1487 don't pollute Vprocess_environment. */
fa09a82d
DL
1488 /* Setting LANG here will defeat the startup locale processing... */
1489#ifdef AIX3_2
93aed04d
RS
1490 putenv ("LANG=C");
1491#endif
0e956009 1492
7db35a48 1493 init_buffer (); /* Init default directory of main buffer. */
ace40a69 1494
7928f0b5 1495 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
ace40a69 1496 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
380e25b8
RS
1497
1498 if (initialized)
1499 {
7db35a48 1500 /* Erase any pre-dump messages in the message log, to avoid confusion. */
380e25b8
RS
1501 Lisp_Object old_log_max;
1502 old_log_max = Vmessage_log_max;
1503 XSETFASTINT (Vmessage_log_max, 0);
f6fe7bb5 1504 message_dolog ("", 0, 1, 0);
380e25b8
RS
1505 Vmessage_log_max = old_log_max;
1506 }
1507
7928f0b5 1508 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
fb8e9847 1509 init_lread ();
f927c5ae 1510
8bb697c0
RS
1511 /* Intern the names of all standard functions and variables;
1512 define standard keys. */
f927c5ae
JB
1513
1514 if (!initialized)
1515 {
7db35a48 1516 /* The basic levels of Lisp must come first. */
f927c5ae 1517 /* And data must come first of all
7db35a48 1518 for the sake of symbols like error-message. */
e0f712ba
AC
1519#ifndef MAC_OS8
1520 /* Called before init_window_once for Mac OS Classic. */
f927c5ae 1521 syms_of_data ();
1a578e9b 1522#endif
f927c5ae 1523 syms_of_alloc ();
fb8e9847 1524 syms_of_lread ();
f927c5ae
JB
1525 syms_of_print ();
1526 syms_of_eval ();
1527 syms_of_fns ();
f927c5ae 1528 syms_of_floatfns ();
f927c5ae
JB
1529
1530 syms_of_abbrev ();
1531 syms_of_buffer ();
1532 syms_of_bytecode ();
1533 syms_of_callint ();
1534 syms_of_casefiddle ();
1535 syms_of_casetab ();
1536 syms_of_callproc ();
270ce821 1537 syms_of_category ();
e0f712ba
AC
1538#ifndef MAC_OS8
1539 /* Called before init_window_once for Mac OS Classic. */
270ce821 1540 syms_of_ccl ();
1a578e9b 1541#endif
270ce821 1542 syms_of_charset ();
f927c5ae
JB
1543 syms_of_cmds ();
1544#ifndef NO_DIR_LIBRARY
1545 syms_of_dired ();
1546#endif /* not NO_DIR_LIBRARY */
1547 syms_of_display ();
1548 syms_of_doc ();
1549 syms_of_editfns ();
1550 syms_of_emacs ();
1551 syms_of_fileio ();
270ce821 1552 syms_of_coding (); /* This should be after syms_of_fileio. */
f927c5ae
JB
1553#ifdef CLASH_DETECTION
1554 syms_of_filelock ();
1555#endif /* CLASH_DETECTION */
1556 syms_of_indent ();
c2c5ed2c 1557 syms_of_insdel ();
f927c5ae
JB
1558 syms_of_keymap ();
1559 syms_of_macros ();
1560 syms_of_marker ();
1561 syms_of_minibuf ();
f927c5ae 1562 syms_of_process ();
e0f712ba
AC
1563#ifndef MAC_OS8
1564 /* Called before init_window_once for Mac OS Classic. */
f927c5ae 1565 syms_of_search ();
1cbd5d9d 1566 syms_of_frame ();
c1e279c2 1567#endif
f927c5ae 1568 syms_of_syntax ();
0d934e7b 1569 syms_of_term ();
f927c5ae 1570 syms_of_undo ();
90d920b6
GM
1571#ifdef HAVE_SOUND
1572 syms_of_sound ();
1573#endif
e0f712ba
AC
1574#ifndef MAC_OS8
1575 /* Called before init_window_once for Mac OS Classic. */
bef79ee4 1576 syms_of_textprop ();
1a578e9b 1577#endif
9d100795 1578 syms_of_composite ();
f927c5ae
JB
1579#ifdef VMS
1580 syms_of_vmsproc ();
1581#endif /* VMS */
05687c54
RS
1582#ifdef WINDOWSNT
1583 syms_of_ntproc ();
1584#endif /* WINDOWSNT */
f927c5ae
JB
1585 syms_of_window ();
1586 syms_of_xdisp ();
0fc4c63e
KS
1587#ifdef HAVE_WINDOW_SYSTEM
1588 syms_of_fringe ();
6e7e181d 1589 syms_of_image ();
0fc4c63e 1590#endif /* HAVE_WINDOW_SYSTEM */
f927c5ae 1591#ifdef HAVE_X_WINDOWS
72412588 1592 syms_of_xterm ();
f927c5ae 1593 syms_of_xfns ();
270ce821 1594 syms_of_fontset ();
28b1b672
JD
1595#ifdef HAVE_X_SM
1596 syms_of_xsmfns ();
1597#endif
72412588
JB
1598#ifdef HAVE_X11
1599 syms_of_xselect ();
1600#endif
f927c5ae
JB
1601#endif /* HAVE_X_WINDOWS */
1602
1e9c210b 1603#ifndef HAVE_NTGUI
e0f712ba
AC
1604#ifndef MAC_OS
1605 /* Called before init_window_once for Mac OS Classic. */
6c850f3c 1606 syms_of_xmenu ();
1e9c210b 1607#endif
1a578e9b 1608#endif
6c850f3c 1609
8ba50e1a 1610#ifdef HAVE_NTGUI
fbd6baed
GV
1611 syms_of_w32term ();
1612 syms_of_w32fns ();
fbd6baed
GV
1613 syms_of_w32select ();
1614 syms_of_w32menu ();
02062ac3 1615 syms_of_fontset ();
8ba50e1a
GV
1616#endif /* HAVE_NTGUI */
1617
3ec33130 1618#if defined (MAC_OSX) && defined (HAVE_CARBON)
e0f712ba
AC
1619 syms_of_macterm ();
1620 syms_of_macfns ();
1621 syms_of_macmenu ();
ab271aca 1622 syms_of_macselect ();
e0f712ba 1623 syms_of_fontset ();
3ec33130 1624#endif /* MAC_OSX && HAVE_CARBON */
e0f712ba 1625
f927c5ae
JB
1626#ifdef SYMS_SYSTEM
1627 SYMS_SYSTEM;
1628#endif
1629
1630#ifdef SYMS_MACHINE
1631 SYMS_MACHINE;
1632#endif
1633
1634 keys_of_casefiddle ();
1635 keys_of_cmds ();
1636 keys_of_buffer ();
1637 keys_of_keyboard ();
1638 keys_of_keymap ();
f927c5ae
JB
1639 keys_of_minibuf ();
1640 keys_of_window ();
9785d95b 1641 }
3b6536b1 1642 else
9785d95b 1643 {
3b6536b1
AS
1644 /* Initialization that must be done even if the global variable
1645 initialized is non zero. */
9785d95b
BK
1646#ifdef HAVE_NTGUI
1647 globals_of_w32fns ();
1648 globals_of_w32menu ();
52c7f9ee 1649 globals_of_w32select ();
3b6536b1 1650#endif /* HAVE_NTGUI */
f927c5ae
JB
1651 }
1652
8bb697c0
RS
1653 if (!noninteractive)
1654 {
1655#ifdef VMS
7db35a48 1656 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
8bb697c0 1657#endif /* VMS */
7db35a48 1658 init_display (); /* Determine terminal type. init_sys_modes uses results. */
8bb697c0 1659 }
e0f712ba
AC
1660#ifndef MAC_OS8
1661 /* Called before init_window_once for Mac OS Classic. */
7db35a48 1662 init_keyboard (); /* This too must precede init_sys_modes. */
1a578e9b 1663#endif
8bb697c0 1664#ifdef VMS
7db35a48 1665 init_vmsproc (); /* And this too. */
8bb697c0 1666#endif /* VMS */
7db35a48 1667 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
90d920b6 1668 init_fns ();
8bb697c0 1669 init_xdisp ();
0fc4c63e
KS
1670#ifdef HAVE_WINDOW_SYSTEM
1671 init_fringe ();
6e7e181d 1672 init_image ();
0fc4c63e 1673#endif /* HAVE_WINDOW_SYSTEM */
8bb697c0
RS
1674 init_macros ();
1675 init_editfns ();
8bb697c0 1676 init_floatfns ();
8bb697c0
RS
1677#ifdef VMS
1678 init_vmsfns ();
1679#endif /* VMS */
1680 init_process ();
90d920b6
GM
1681#ifdef HAVE_SOUND
1682 init_sound ();
1683#endif
75816372 1684 init_window ();
8bb697c0 1685
f927c5ae
JB
1686 if (!initialized)
1687 {
e2925360 1688 char *file;
7db35a48 1689 /* Handle -l loadup, args passed by Makefile. */
df6530f8 1690 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
f927c5ae 1691 Vtop_level = Fcons (intern ("load"),
e2925360 1692 Fcons (build_string (file), Qnil));
f927c5ae 1693 /* Unless next switch is -nl, load "loadup.el" first thing. */
956e3c7e 1694 if (! no_loadup)
f927c5ae
JB
1695 Vtop_level = Fcons (intern ("load"),
1696 Fcons (build_string ("loadup.el"), Qnil));
f927c5ae
JB
1697 }
1698
93572b43
KH
1699 if (initialized)
1700 {
0269dedb
RS
1701#ifdef HAVE_TZSET
1702 {
1703 /* If the execution TZ happens to be the same as the dump TZ,
1704 change it to some other value and then change it back,
1705 to force the underlying implementation to reload the TZ info.
1706 This is needed on implementations that load TZ info from files,
1707 since the TZ file contents may differ between dump and execution. */
1708 char *tz = getenv ("TZ");
1709 if (tz && !strcmp (tz, dump_tz))
1710 {
1711 ++*tz;
1712 tzset ();
1713 --*tz;
1714 }
1715 }
1716#endif
93572b43
KH
1717 }
1718
ecf783fa
EZ
1719 /* Set up for profiling. This is known to work on FreeBSD,
1720 GNU/Linux and MinGW. It might work on some other systems too.
1721 Give it a try and tell us if it works on your system. To compile
5a693cc0
EZ
1722 for profiling, add -pg to the switches your platform uses in
1723 CFLAGS and LDFLAGS. For example:
665b5955 1724 `make CFLAGS="-pg -g -O -DPROFILING=1" LDFLAGS="-pg -g"'. */
ecf783fa 1725#if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
e610ea43
RS
1726#ifdef PROFILING
1727 if (initialized)
1728 {
7db35a48 1729 extern void _mcleanup ();
ecf783fa
EZ
1730#ifdef __MINGW32__
1731 extern unsigned char etext asm ("etext");
1732#else
e610ea43 1733 extern char etext;
ecf783fa 1734#endif
90d920b6 1735 extern void safe_bcopy ();
67a5596f
GM
1736 extern void dump_opcode_frequencies ();
1737
e610ea43 1738 atexit (_mcleanup);
90d920b6
GM
1739 /* This uses safe_bcopy because that function comes first in the
1740 Emacs executable. It might be better to use something that
1741 gives the start of the text segment, but start_of_text is not
1742 defined on all systems now. */
1743 monstartup (safe_bcopy, &etext);
e610ea43
RS
1744 }
1745 else
1746 moncontrol (0);
1747#endif
1748#endif
1749
f927c5ae
JB
1750 initialized = 1;
1751
e7536cff
RS
1752#ifdef LOCALTIME_CACHE
1753 /* Some versions of localtime have a bug. They cache the value of the time
279cc2b8
JB
1754 zone rather than looking it up every time. Since localtime() is
1755 called to bolt the undumping time into the undumped emacs, this
afe9fae9 1756 results in localtime ignoring the TZ environment variable.
7db35a48 1757 This flushes the new TZ value into localtime. */
afe9fae9 1758 tzset ();
e7536cff 1759#endif /* defined (LOCALTIME_CACHE) */
279cc2b8 1760
f927c5ae
JB
1761 /* Enter editor command loop. This never returns. */
1762 Frecursive_edit ();
1763 /* NOTREACHED */
6bbd7a29 1764 return 0;
f927c5ae
JB
1765}
1766\f
081bef73
RS
1767/* Sort the args so we can find the most important ones
1768 at the beginning of argv. */
1769
1770/* First, here's a table of all the standard options. */
1771
1772struct standard_args
1773{
1774 char *name;
1775 char *longname;
1776 int priority;
1777 int nargs;
1778};
1779
1780struct standard_args standard_args[] =
1781{
05922407
RS
1782 { "-version", "--version", 150, 0 },
1783#ifdef HAVE_SHM
1784 { "-nl", "--no-shared-memory", 140, 0 },
1785#endif
2725719a 1786#ifdef VMS
05922407 1787 { "-map", "--map-data", 130, 0 },
2725719a 1788#endif
05922407 1789 { "-t", "--terminal", 120, 1 },
400d6fa9 1790 { "-nw", "--no-window-system", 110, 0 },
05922407
RS
1791 { "-nw", "--no-windows", 110, 0 },
1792 { "-batch", "--batch", 100, 0 },
6e910e07 1793 { "-script", "--script", 100, 1 },
05922407 1794 { "-help", "--help", 90, 0 },
956e3c7e
RS
1795 { "-no-unibyte", "--no-unibyte", 83, 0 },
1796 { "-multibyte", "--multibyte", 82, 0 },
1797 { "-unibyte", "--unibyte", 81, 0 },
1798 { "-no-multibyte", "--no-multibyte", 80, 0 },
956e3c7e 1799 { "-nl", "--no-loadup", 70, 0 },
956e3c7e
RS
1800 /* -d must come last before the options handled in startup.el. */
1801 { "-d", "--display", 60, 1 },
1802 { "-display", 0, 60, 1 },
05922407 1803 /* Now for the options handled in startup.el. */
a1716a57
RS
1804 { "-Q", "--quick", 55, 0 },
1805 { "-quick", 0, 55, 0 },
081bef73
RS
1806 { "-q", "--no-init-file", 50, 0 },
1807 { "-no-init-file", 0, 50, 0 },
1808 { "-no-site-file", "--no-site-file", 40, 0 },
af2bf12f 1809 { "-no-splash", "--no-splash", 40, 0 },
081bef73
RS
1810 { "-u", "--user", 30, 1 },
1811 { "-user", 0, 30, 1 },
1812 { "-debug-init", "--debug-init", 20, 0 },
f9e36a6d 1813 { "-nbi", "--no-bitmap-icon", 15, 0 },
f2bc3538 1814 { "-iconic", "--iconic", 15, 0 },
a1716a57 1815 { "-D", "--basic-display", 12, 0},
e09b9180 1816 { "-basic-display", 0, 12, 0},
081bef73
RS
1817 { "-bg", "--background-color", 10, 1 },
1818 { "-background", 0, 10, 1 },
1819 { "-fg", "--foreground-color", 10, 1 },
1820 { "-foreground", 0, 10, 1 },
1821 { "-bd", "--border-color", 10, 1 },
1822 { "-bw", "--border-width", 10, 1 },
1823 { "-ib", "--internal-border", 10, 1 },
1824 { "-ms", "--mouse-color", 10, 1 },
1825 { "-cr", "--cursor-color", 10, 1 },
49ca717b 1826 { "-nbc", "--no-blinking-cursor", 10, 0 },
081bef73
RS
1827 { "-fn", "--font", 10, 1 },
1828 { "-font", 0, 10, 1 },
94452530
EZ
1829 { "-fs", "--fullscreen", 10, 0 },
1830 { "-fw", "--fullwidth", 10, 0 },
1831 { "-fh", "--fullheight", 10, 0 },
081bef73
RS
1832 { "-g", "--geometry", 10, 1 },
1833 { "-geometry", 0, 10, 1 },
1834 { "-T", "--title", 10, 1 },
ae63ae52 1835 { "-title", 0, 10, 1 },
081bef73
RS
1836 { "-name", "--name", 10, 1 },
1837 { "-xrm", "--xrm", 10, 1 },
fcdeb5d9
RS
1838 { "-r", "--reverse-video", 5, 0 },
1839 { "-rv", 0, 5, 0 },
1840 { "-reverse", 0, 5, 0 },
ae63ae52 1841 { "-hb", "--horizontal-scroll-bars", 5, 0 },
fcdeb5d9 1842 { "-vb", "--vertical-scroll-bars", 5, 0 },
d20e1b1e 1843 { "-color", "--color", 5, 0},
fcdeb5d9
RS
1844 /* These have the same priority as ordinary file name args,
1845 so they are not reordered with respect to those. */
4af9e0b3
RS
1846 { "-L", "--directory", 0, 1 },
1847 { "-directory", 0, 0, 1 },
fcdeb5d9
RS
1848 { "-l", "--load", 0, 1 },
1849 { "-load", 0, 0, 1 },
e09b9180 1850 { "-scriptload", "--scriptload", 0, 1 },
fcdeb5d9
RS
1851 { "-f", "--funcall", 0, 1 },
1852 { "-funcall", 0, 0, 1 },
575985b1 1853 { "-eval", "--eval", 0, 1 },
67a5596f 1854 { "-execute", "--execute", 0, 1 },
2e13f8e9
RS
1855 { "-find-file", "--find-file", 0, 1 },
1856 { "-visit", "--visit", 0, 1 },
67a5596f 1857 { "-file", "--file", 0, 1 },
fcdeb5d9 1858 { "-insert", "--insert", 0, 1 },
f2bc3538 1859 /* This should be processed after ordinary file name args and the like. */
fcdeb5d9 1860 { "-kill", "--kill", -10, 0 },
081bef73
RS
1861};
1862
1863/* Reorder the elements of ARGV (assumed to have ARGC elements)
1864 so that the highest priority ones come first.
1865 Do not change the order of elements of equal priority.
956e3c7e
RS
1866 If an option takes an argument, keep it and its argument together.
1867
1868 If an option that takes no argument appears more
1869 than once, eliminate all but one copy of it. */
081bef73
RS
1870
1871static void
1872sort_args (argc, argv)
1873 int argc;
1874 char **argv;
1875{
1876 char **new = (char **) xmalloc (sizeof (char *) * argc);
1877 /* For each element of argv,
1878 the corresponding element of options is:
1879 0 for an option that takes no arguments,
1880 1 for an option that takes one argument, etc.
1881 -1 for an ordinary non-option argument. */
6dad9359 1882 int *options = (int *) xmalloc (sizeof (int) * argc);
081bef73
RS
1883 int *priority = (int *) xmalloc (sizeof (int) * argc);
1884 int to = 1;
956e3c7e 1885 int incoming_used = 1;
081bef73
RS
1886 int from;
1887 int i;
1888
1889 /* Categorize all the options,
1890 and figure out which argv elts are option arguments. */
1891 for (from = 1; from < argc; from++)
1892 {
1893 options[from] = -1;
fcdeb5d9 1894 priority[from] = 0;
081bef73
RS
1895 if (argv[from][0] == '-')
1896 {
1897 int match, thislen;
1898 char *equals;
1899
c96f26f4
RS
1900 /* If we have found "--", don't consider
1901 any more arguments as options. */
249443b6 1902 if (argv[from][1] == '-' && argv[from][2] == 0)
c96f26f4
RS
1903 {
1904 /* Leave the "--", and everything following it, at the end. */
1905 for (; from < argc; from++)
1906 {
1907 priority[from] = -100;
1908 options[from] = -1;
1909 }
1910 break;
1911 }
1912
081bef73
RS
1913 /* Look for a match with a known old-fashioned option. */
1914 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1915 if (!strcmp (argv[from], standard_args[i].name))
1916 {
1917 options[from] = standard_args[i].nargs;
1918 priority[from] = standard_args[i].priority;
fd76ec52
RS
1919 if (from + standard_args[i].nargs >= argc)
1920 fatal ("Option `%s' requires an argument\n", argv[from]);
081bef73
RS
1921 from += standard_args[i].nargs;
1922 goto done;
1923 }
1924
1925 /* Look for a match with a known long option.
1926 MATCH is -1 if no match so far, -2 if two or more matches so far,
1927 >= 0 (the table index of the match) if just one match so far. */
1928 if (argv[from][1] == '-')
1929 {
1930 match = -1;
1931 thislen = strlen (argv[from]);
1932 equals = index (argv[from], '=');
1933 if (equals != 0)
1934 thislen = equals - argv[from];
1935
f609ef57
KH
1936 for (i = 0;
1937 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1938 if (standard_args[i].longname
1939 && !strncmp (argv[from], standard_args[i].longname,
1940 thislen))
081bef73
RS
1941 {
1942 if (match == -1)
1943 match = i;
1944 else
1945 match = -2;
1946 }
1947
1948 /* If we found exactly one match, use that. */
1949 if (match >= 0)
1950 {
1951 options[from] = standard_args[match].nargs;
1952 priority[from] = standard_args[match].priority;
1953 /* If --OPTION=VALUE syntax is used,
1954 this option uses just one argv element. */
1955 if (equals != 0)
1956 options[from] = 0;
fd76ec52
RS
1957 if (from + options[from] >= argc)
1958 fatal ("Option `%s' requires an argument\n", argv[from]);
081bef73
RS
1959 from += options[from];
1960 }
1961 }
1962 done: ;
1963 }
1964 }
1965
1966 /* Copy the arguments, in order of decreasing priority, to NEW. */
1967 new[0] = argv[0];
956e3c7e 1968 while (incoming_used < argc)
081bef73
RS
1969 {
1970 int best = -1;
2c70c992 1971 int best_priority = -9999;
081bef73
RS
1972
1973 /* Find the highest priority remaining option.
1974 If several have equal priority, take the first of them. */
1975 for (from = 1; from < argc; from++)
1976 {
1977 if (argv[from] != 0 && priority[from] > best_priority)
1978 {
1979 best_priority = priority[from];
1980 best = from;
1981 }
1982 /* Skip option arguments--they are tied to the options. */
1983 if (options[from] > 0)
1984 from += options[from];
1985 }
7db35a48 1986
081bef73
RS
1987 if (best < 0)
1988 abort ();
1989
956e3c7e
RS
1990 /* Copy the highest priority remaining option, with its args, to NEW.
1991 Unless it is a duplicate of the previous one. */
1992 if (! (options[best] == 0
1993 && ! strcmp (new[to - 1], argv[best])))
1994 {
1995 new[to++] = argv[best];
1996 for (i = 0; i < options[best]; i++)
1997 new[to++] = argv[best + i + 1];
1998 }
1999
2000 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
081bef73
RS
2001
2002 /* Clear out this option in ARGV. */
2003 argv[best] = 0;
2004 for (i = 0; i < options[best]; i++)
2005 argv[best + i + 1] = 0;
2006 }
2007
81b7af72
RS
2008 /* If duplicate options were deleted, fill up extra space with null ptrs. */
2009 while (to < argc)
2010 new[to++] = 0;
2011
6dad9359 2012 bcopy (new, argv, sizeof (char *) * argc);
0bf591da 2013
68db37aa
KS
2014 xfree (options);
2015 xfree (new);
2016 xfree (priority);
081bef73
RS
2017}
2018\f
f927c5ae 2019DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
7db35a48
PJ
2020 doc: /* Exit the Emacs job and kill it.
2021If ARG is an integer, return ARG as the exit program code.
b224de9b 2022If ARG is a string, stuff it as keyboard input.
7db35a48
PJ
2023
2024The value of `kill-emacs-hook', if not void,
2025is a list of functions (of no args),
2026all of which are called before Emacs is actually killed. */)
2027 (arg)
f927c5ae
JB
2028 Lisp_Object arg;
2029{
f927c5ae
JB
2030 struct gcpro gcpro1;
2031
2032 GCPRO1 (arg);
2033
2034 if (feof (stdin))
2035 arg = Qt;
2036
2447c626 2037 if (!NILP (Vrun_hooks) && !noninteractive)
f927c5ae
JB
2038 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
2039
f927c5ae
JB
2040 UNGCPRO;
2041
2042/* Is it really necessary to do this deassign
2043 when we are going to exit anyway? */
2044/* #ifdef VMS
2045 stop_vms_input ();
2046 #endif */
40be253a 2047
d0068e25 2048 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
40be253a 2049
58545838
KH
2050 /* If we have an auto-save list file,
2051 kill it because we are exiting Emacs deliberately (not crashing).
2052 Do it after shut_down_emacs, which does an auto-save. */
2053 if (STRINGP (Vauto_save_list_file_name))
d5db4077 2054 unlink (SDATA (Vauto_save_list_file_name));
58545838 2055
fa439170 2056 exit (INTEGERP (arg) ? XINT (arg) : EXIT_SUCCESS);
f927c5ae 2057 /* NOTREACHED */
f1145b54 2058 return Qnil;
f927c5ae 2059}
40be253a
JB
2060
2061
2062/* Perform an orderly shutdown of Emacs. Autosave any modified
2063 buffers, kill any child processes, clean up the terminal modes (if
2064 we're in the foreground), and other stuff like that. Don't perform
2065 any redisplay; this may be called when Emacs is shutting down in
2066 the background, or after its X connection has died.
2067
2068 If SIG is a signal number, print a message for it.
2069
2070 This is called by fatal signal handlers, X protocol error handlers,
2071 and Fkill_emacs. */
f7ab4e3d 2072
40be253a 2073void
f7ab4e3d 2074shut_down_emacs (sig, no_x, stuff)
41423a80 2075 int sig, no_x;
f7ab4e3d 2076 Lisp_Object stuff;
40be253a 2077{
829d872b
RS
2078 /* Prevent running of hooks from now on. */
2079 Vrun_hooks = Qnil;
2080
9db03f6c
KS
2081 /* Don't update display from now on. */
2082 Vinhibit_redisplay = Qt;
2083
7db35a48 2084 /* If we are controlling the terminal, reset terminal modes. */
40be253a
JB
2085#ifdef EMACS_HAVE_TTY_PGRP
2086 {
d04d81d2
RS
2087 int pgrp = EMACS_GETPGRP (0);
2088
40be253a
JB
2089 int tpgrp;
2090 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
5a570e37 2091 && tpgrp == pgrp)
40be253a
JB
2092 {
2093 fflush (stdout);
2094 reset_sys_modes ();
2095 if (sig && sig != SIGTERM)
7c402969 2096 fprintf (stderr, "Fatal error (%d)", sig);
40be253a
JB
2097 }
2098 }
2099#else
2100 fflush (stdout);
2101 reset_sys_modes ();
2102#endif
2103
f7ab4e3d
RS
2104 stuff_buffered_input (stuff);
2105
ba7c29f3 2106#ifdef subprocesses
92d835a4 2107 inhibit_sentinels = 1;
ba7c29f3 2108#endif
40be253a
JB
2109 kill_buffer_processes (Qnil);
2110 Fdo_auto_save (Qt, Qnil);
2111
2112#ifdef CLASH_DETECTION
2113 unlock_all_files ();
2114#endif
2115
2116#ifdef VMS
2117 kill_vms_processes ();
2118#endif
2119
5e7f8733 2120#if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
41423a80 2121#ifdef HAVE_X_WINDOWS
f7511647
RS
2122 /* It's not safe to call intern here. Maybe we are crashing. */
2123 if (!noninteractive && SYMBOLP (Vwindow_system)
d5db4077
KR
2124 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1
2125 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x'
f7511647 2126 && ! no_x)
41423a80
RS
2127 Fx_close_current_connection ();
2128#endif /* HAVE_X_WINDOWS */
5e7f8733 2129#endif
41423a80 2130
40be253a
JB
2131#ifdef SIGIO
2132 /* There is a tendency for a SIGIO signal to arrive within exit,
2133 and cause a SIGHUP because the input descriptor is already closed. */
2134 unrequest_sigio ();
2135 signal (SIGIO, SIG_IGN);
2136#endif
41f339d4
RS
2137
2138#ifdef WINDOWSNT
2139 term_ntproc ();
2140#endif
d546e578 2141
cd8d4168
GM
2142 /* Do this only if terminating normally, we want glyph matrices
2143 etc. in a core dump. */
200f868e 2144 if (sig == 0 || sig == SIGTERM)
cd8d4168
GM
2145 {
2146 check_glyph_memory ();
2147 check_message_stack ();
2148 }
90d920b6 2149
d546e578
EZ
2150#ifdef MSDOS
2151 dos_cleanup ();
2152#endif
40be253a
JB
2153}
2154
2155
f927c5ae
JB
2156\f
2157#ifndef CANNOT_DUMP
f927c5ae
JB
2158
2159#ifdef HAVE_SHM
2160
2161DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
7db35a48
PJ
2162 doc: /* Dump current state of Emacs into data file FILENAME.
2163This function exists on systems that use HAVE_SHM. */)
2164 (filename)
c9aae259 2165 Lisp_Object filename;
f927c5ae 2166{
55697f5b 2167 extern char my_edata[];
f927c5ae 2168 Lisp_Object tem;
f927c5ae 2169
4fab758d 2170 check_pure_size ();
b7826503 2171 CHECK_STRING (filename);
c9aae259 2172 filename = Fexpand_file_name (filename, Qnil);
f927c5ae
JB
2173
2174 tem = Vpurify_flag;
2175 Vpurify_flag = Qnil;
2176
2177 fflush (stdout);
7db35a48 2178 /* Tell malloc where start of impure now is. */
f927c5ae
JB
2179 /* Also arrange for warnings when nearly out of space. */
2180#ifndef SYSTEM_MALLOC
1090a161 2181 memory_warnings (my_edata, malloc_warning);
f927c5ae 2182#endif
d5db4077 2183 map_out_data (SDATA (filename));
f927c5ae
JB
2184
2185 Vpurify_flag = tem;
2186
2187 return Qnil;
2188}
2189
2190#else /* not HAVE_SHM */
2191
2192DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
7db35a48
PJ
2193 doc: /* Dump current state of Emacs into executable file FILENAME.
2194Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2195This is used in the file `loadup.el' when building Emacs.
2196
2197You must run Emacs in batch mode in order to dump it. */)
2198 (filename, symfile)
c9aae259 2199 Lisp_Object filename, symfile;
f927c5ae 2200{
55697f5b 2201 extern char my_edata[];
f927c5ae 2202 Lisp_Object tem;
1b7ddf4f 2203 Lisp_Object symbol;
331379bf 2204 int count = SPECPDL_INDEX ();
4fab758d
GM
2205
2206 check_pure_size ();
f927c5ae 2207
87a98b1a
RS
2208 if (! noninteractive)
2209 error ("Dumping Emacs works only in batch mode");
2210
848a925e 2211#ifdef GNU_LINUX
dede2792
JD
2212 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2213 {
2214 fprintf (stderr, "**************************************************\n");
2215 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
9b33d596 2216 fprintf (stderr, "heap (%lu byte). This usually means that exec-shield\n",
c37caf9d
JD
2217 heap_bss_diff);
2218 fprintf (stderr, "or something similar is in effect. The dump may\n");
2219 fprintf (stderr, "fail because of this. See the section about \n");
2220 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
dede2792
JD
2221 fprintf (stderr, "**************************************************\n");
2222 }
848a925e 2223#endif /* GNU_LINUX */
dede2792 2224
1b7ddf4f
RS
2225 /* Bind `command-line-processed' to nil before dumping,
2226 so that the dumped Emacs will process its command line
2227 and set up to work with X windows if appropriate. */
4aaa3607 2228 symbol = intern ("command-line-processed");
1b7ddf4f
RS
2229 specbind (symbol, Qnil);
2230
b7826503 2231 CHECK_STRING (filename);
c9aae259
EN
2232 filename = Fexpand_file_name (filename, Qnil);
2233 if (!NILP (symfile))
f927c5ae 2234 {
b7826503 2235 CHECK_STRING (symfile);
d5db4077 2236 if (SCHARS (symfile))
c9aae259 2237 symfile = Fexpand_file_name (symfile, Qnil);
f927c5ae
JB
2238 }
2239
2240 tem = Vpurify_flag;
2241 Vpurify_flag = Qnil;
2242
0269dedb
RS
2243#ifdef HAVE_TZSET
2244 set_time_zone_rule (dump_tz);
2245#ifndef LOCALTIME_CACHE
2246 /* Force a tz reload, since set_time_zone_rule doesn't. */
2247 tzset ();
2248#endif
2249#endif
2250
f927c5ae
JB
2251 fflush (stdout);
2252#ifdef VMS
d5db4077 2253 mapout_data (SDATA (filename));
f927c5ae 2254#else
7db35a48 2255 /* Tell malloc where start of impure now is. */
f927c5ae
JB
2256 /* Also arrange for warnings when nearly out of space. */
2257#ifndef SYSTEM_MALLOC
cc5f52cb
RS
2258#ifndef WINDOWSNT
2259 /* On Windows, this was done before dumping, and that once suffices.
2260 Meanwhile, my_edata is not valid on Windows. */
cb37cf78 2261 memory_warnings (my_edata, malloc_warning);
cc5f52cb 2262#endif /* not WINDOWSNT */
15aaf1b5 2263#endif
06ca62eb 2264#if !defined (SYSTEM_MALLOC) && defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
aa477689
JD
2265 /* Pthread may call malloc before main, and then we will get an endless
2266 loop, because pthread_self (see alloc.c) calls malloc the first time
2267 it is called on some systems. */
2268 reset_malloc_hooks ();
2269#endif
15aaf1b5
RS
2270#ifdef DOUG_LEA_MALLOC
2271 malloc_state_ptr = malloc_get_state ();
f927c5ae 2272#endif
2b7377ca 2273
a74c5ec1 2274#ifdef USE_MMAP_FOR_BUFFERS
2b7377ca
GM
2275 mmap_set_vars (0);
2276#endif
d5db4077
KR
2277 unexec (SDATA (filename),
2278 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
a74c5ec1 2279#ifdef USE_MMAP_FOR_BUFFERS
2b7377ca
GM
2280 mmap_set_vars (1);
2281#endif
15aaf1b5
RS
2282#ifdef DOUG_LEA_MALLOC
2283 free (malloc_state_ptr);
2284#endif
f927c5ae
JB
2285#endif /* not VMS */
2286
2287 Vpurify_flag = tem;
2288
1b7ddf4f 2289 return unbind_to (count, Qnil);
f927c5ae
JB
2290}
2291
2292#endif /* not HAVE_SHM */
2293
2294#endif /* not CANNOT_DUMP */
2295\f
68c45bf0
PE
2296#if HAVE_SETLOCALE
2297/* Recover from setlocale (LC_ALL, ""). */
2298void
2299fixup_locale ()
2300{
68c45bf0
PE
2301 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2302 so that numbers are read and printed properly for Emacs Lisp. */
2303 setlocale (LC_NUMERIC, "C");
68c45bf0
PE
2304}
2305
0c8559bb
PE
2306/* Set system locale CATEGORY, with previous locale *PLOCALE, to
2307 DESIRED_LOCALE. */
68c45bf0
PE
2308static void
2309synchronize_locale (category, plocale, desired_locale)
2310 int category;
2311 Lisp_Object *plocale;
2312 Lisp_Object desired_locale;
2313{
0c8559bb
PE
2314 if (! EQ (*plocale, desired_locale))
2315 {
2316 *plocale = desired_locale;
2317 setlocale (category, (STRINGP (desired_locale)
3b6536b1 2318 ? (char *) SDATA (desired_locale)
0c8559bb
PE
2319 : ""));
2320 }
68c45bf0
PE
2321}
2322
ca9c0567 2323/* Set system time locale to match Vsystem_time_locale, if possible. */
68c45bf0 2324void
ca9c0567 2325synchronize_system_time_locale ()
68c45bf0 2326{
ca9c0567
PE
2327 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2328 Vsystem_time_locale);
68c45bf0
PE
2329}
2330
ca9c0567
PE
2331/* Set system messages locale to match Vsystem_messages_locale, if
2332 possible. */
68c45bf0 2333void
ca9c0567 2334synchronize_system_messages_locale ()
68c45bf0
PE
2335{
2336#ifdef LC_MESSAGES
ca9c0567
PE
2337 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2338 Vsystem_messages_locale);
68c45bf0
PE
2339#endif
2340}
2341#endif /* HAVE_SETLOCALE */
2342\f
4b163808 2343#ifndef SEPCHAR
f927c5ae
JB
2344#define SEPCHAR ':'
2345#endif
2346
2347Lisp_Object
2348decode_env_path (evarname, defalt)
2349 char *evarname, *defalt;
2350{
2351 register char *path, *p;
213d0b1f 2352 Lisp_Object lpath, element, tem;
f927c5ae 2353
2447c626
JB
2354 /* It's okay to use getenv here, because this function is only used
2355 to initialize variables when Emacs starts up, and isn't called
2356 after that. */
e065a56e
JB
2357 if (evarname != 0)
2358 path = (char *) getenv (evarname);
2359 else
2360 path = 0;
f927c5ae
JB
2361 if (!path)
2362 path = defalt;
6a30e6d6
RS
2363#ifdef DOS_NT
2364 /* Ensure values from the environment use the proper directory separator. */
2365 if (path)
2366 {
2367 p = alloca (strlen (path) + 1);
2368 strcpy (p, path);
2369 path = p;
2370
2371 if ('/' == DIRECTORY_SEP)
2372 dostounix_filename (path);
2373 else
2374 unixtodos_filename (path);
2375 }
2376#endif
f927c5ae
JB
2377 lpath = Qnil;
2378 while (1)
2379 {
2380 p = index (path, SEPCHAR);
2381 if (!p) p = path + strlen (path);
213d0b1f
RS
2382 element = (p - path ? make_string (path, p - path)
2383 : build_string ("."));
2384
2385 /* Add /: to the front of the name
2386 if it would otherwise be treated as magic. */
2387 tem = Ffind_file_name_handler (element, Qt);
ca3df2d5
RS
2388
2389 /* However, if the handler says "I'm safe",
2390 don't bother adding /:. */
2391 if (SYMBOLP (tem))
2392 {
2393 Lisp_Object prop;
2394 prop = Fget (tem, intern ("safe-magic"));
2395 if (! NILP (prop))
2396 tem = Qnil;
2397 }
2398
213d0b1f
RS
2399 if (! NILP (tem))
2400 element = concat2 (build_string ("/:"), element);
2401
2402 lpath = Fcons (element, lpath);
f927c5ae
JB
2403 if (*p)
2404 path = p + 1;
2405 else
2406 break;
2407 }
2408 return Fnreverse (lpath);
2409}
2410
dfcf069d 2411void
f927c5ae
JB
2412syms_of_emacs ()
2413{
213d0b1f
RS
2414 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2415 staticpro (&Qfile_name_handler_alist);
2416
83591e66 2417#ifndef CANNOT_DUMP
f927c5ae
JB
2418#ifdef HAVE_SHM
2419 defsubr (&Sdump_emacs_data);
2420#else
2421 defsubr (&Sdump_emacs);
83591e66 2422#endif
f927c5ae
JB
2423#endif
2424
2425 defsubr (&Skill_emacs);
2426
59653951 2427 defsubr (&Sinvocation_name);
ace40a69 2428 defsubr (&Sinvocation_directory);
59653951 2429
f927c5ae 2430 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2a9d2ed6
RS
2431 doc: /* Args passed by shell to Emacs, as a list of strings.
2432Many arguments are deleted from the list as they are processed. */);
f927c5ae
JB
2433
2434 DEFVAR_LISP ("system-type", &Vsystem_type,
40a8993a
NR
2435 doc: /* Value is symbol indicating type of operating system you are using.
2436Special values:
2437 `gnu/linux' compiled for a GNU/Linux system.
2438 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2439 `macos' compiled for Mac OS 9.
2440 `ms-dos' compiled as an MS-DOS application.
2441 `windows-nt' compiled as a native W32 application.
2442 `cygwin' compiled using the Cygwin library.
e2e87e15
JB
2443 `vax-vms' or
2444 `axp-vms' compiled for a (Open)VMS system.
40a8993a 2445Anything else indicates some sort of Unix system. */);
f927c5ae
JB
2446 Vsystem_type = intern (SYSTEM_TYPE);
2447
271c7b7c 2448 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
7db35a48
PJ
2449 doc: /* Value is string indicating configuration Emacs was built for.
2450On MS-Windows, the value reflects the OS flavor and version on which
2451Emacs is running. */);
f7511647 2452 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
271c7b7c 2453
f0fc0b1a 2454 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
7db35a48 2455 doc: /* String containing the configuration options Emacs was built with. */);
f0fc0b1a
KH
2456 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2457
f927c5ae 2458 DEFVAR_BOOL ("noninteractive", &noninteractive1,
7db35a48 2459 doc: /* Non-nil means Emacs is running without interactive terminal. */);
e5d77022 2460
e5d77022 2461 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
d77b70e5
MR
2462 doc: /* Hook to be run when kill-emacs is called.
2463Since `kill-emacs' may be invoked when the terminal is disconnected (or
7db35a48
PJ
2464in other similar situations), functions placed on this hook should not
2465expect to be able to interact with the user. To ask for confirmation,
d77b70e5
MR
2466see `kill-emacs-query-functions' instead.
2467
2468The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
edc8ae07 2469 Vkill_emacs_hook = Qnil;
3005da00 2470
f9a6326d
SM
2471 empty_string = build_string ("");
2472 staticpro (&empty_string);
2473
3005da00 2474 DEFVAR_INT ("emacs-priority", &emacs_priority,
7db35a48
PJ
2475 doc: /* Priority for Emacs to run at.
2476This value is effective only if set before Emacs is dumped,
2477and only if the Emacs executable is installed with setuid to permit
2478it to change priority. (Emacs sets its uid back to the real uid.)
2479Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2480before you compile Emacs, to enable the code for this feature. */);
e7a9e1c3 2481 emacs_priority = 0;
074a066b
GV
2482
2483 DEFVAR_LISP ("path-separator", &Vpath_separator,
c7ed3276
EZ
2484 doc: /* String containing the character that separates directories in
2485search paths, such as PATH and other similar environment variables. */);
074a066b
GV
2486 {
2487 char c = SEPCHAR;
2488 Vpath_separator = make_string (&c, 1);
2489 }
59653951 2490
f67de86f 2491 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
7db35a48
PJ
2492 doc: /* The program name that was used to run Emacs.
2493Any directory names are omitted. */);
f67de86f
RS
2494
2495 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
7db35a48
PJ
2496 doc: /* The directory in which the Emacs executable was found, to run it.
2497The value is nil if that directory's name is not known. */);
f67de86f
RS
2498
2499 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
7db35a48
PJ
2500 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2501This is non-nil when we can't find those directories in their standard
2502installed locations, but we can find them
2503near where the Emacs executable was found. */);
07f4d123 2504 Vinstallation_directory = Qnil;
68c45bf0 2505
ca9c0567 2506 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
7db35a48 2507 doc: /* System locale for messages. */);
ca9c0567 2508 Vsystem_messages_locale = Qnil;
68c45bf0 2509
ca9c0567 2510 DEFVAR_LISP ("previous-system-messages-locale",
7db35a48
PJ
2511 &Vprevious_system_messages_locale,
2512 doc: /* Most recently used system locale for messages. */);
ca9c0567 2513 Vprevious_system_messages_locale = Qnil;
68c45bf0 2514
ca9c0567 2515 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
7db35a48 2516 doc: /* System locale for time. */);
ca9c0567 2517 Vsystem_time_locale = Qnil;
68c45bf0 2518
ca9c0567 2519 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
7db35a48 2520 doc: /* Most recently used system locale for time. */);
ca9c0567 2521 Vprevious_system_time_locale = Qnil;
f927c5ae 2522}
ab5796a9
MB
2523
2524/* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2525 (do not change this comment) */