Commit | Line | Data |
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f927c5ae | 1 | /* Fully extensible Emacs, running on Unix, intended for GNU. |
4a2f9c6a | 2 | Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc. |
f927c5ae JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
40be253a | 8 | the Free Software Foundation; either version 2, or (at your option) |
f927c5ae JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
5a7670bf RS |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
f927c5ae JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | #include <errno.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
f927c5ae JB |
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 | ||
488b7cb3 | 35 | #ifdef BSD_SYSTEM |
f927c5ae JB |
36 | #include <sys/ioctl.h> |
37 | #endif | |
38 | ||
f927c5ae JB |
39 | #include "lisp.h" |
40 | #include "commands.h" | |
bef79ee4 | 41 | #include "intervals.h" |
a08a816a | 42 | #include "buffer.h" |
f927c5ae | 43 | |
edc8ae07 | 44 | #include "systty.h" |
6c3a4e9d | 45 | #include "blockinput.h" |
8090eb09 | 46 | #include "syssignal.h" |
6c362a8b | 47 | #include "process.h" |
5bda49c6 | 48 | #include "termhooks.h" |
dfcf069d | 49 | #include "keyboard.h" |
a41f8bed | 50 | |
53c58b5d RS |
51 | #ifdef HAVE_SETRLIMIT |
52 | #include <sys/time.h> | |
53 | #include <sys/resource.h> | |
54 | #endif | |
55 | ||
f927c5ae JB |
56 | #ifndef O_RDWR |
57 | #define O_RDWR 2 | |
58 | #endif | |
59 | ||
43165242 | 60 | extern void malloc_warning (); |
0269dedb | 61 | extern void set_time_zone_rule (); |
43165242 KH |
62 | extern char *index (); |
63 | extern char *strerror (); | |
64 | ||
f927c5ae JB |
65 | /* Command line args from shell, as list of strings */ |
66 | Lisp_Object Vcommand_line_args; | |
67 | ||
59653951 JB |
68 | /* The name under which Emacs was invoked, with any leading directory |
69 | names discarded. */ | |
70 | Lisp_Object Vinvocation_name; | |
71 | ||
ace40a69 RS |
72 | /* The directory name from which Emacs was invoked. */ |
73 | Lisp_Object Vinvocation_directory; | |
74 | ||
07f4d123 RS |
75 | /* The directory name in which to find subdirs such as lisp and etc. |
76 | nil means get them only from PATH_LOADSEARCH. */ | |
77 | Lisp_Object Vinstallation_directory; | |
78 | ||
e5d77022 JB |
79 | /* Hook run by `kill-emacs' before it does really anything. */ |
80 | Lisp_Object Vkill_emacs_hook; | |
81 | ||
7317d9e8 RS |
82 | #ifdef SIGUSR1 |
83 | /* Hooks for signal USR1 and USR2 handing */ | |
84 | Lisp_Object Vsignal_USR1_hook; | |
85 | #ifdef SIGUSR2 | |
86 | Lisp_Object Vsignal_USR2_hook; | |
87 | #endif | |
88 | #endif | |
89 | ||
074a066b GV |
90 | /* Search path separator. */ |
91 | Lisp_Object Vpath_separator; | |
92 | ||
f927c5ae JB |
93 | /* Set nonzero after Emacs has started up the first time. |
94 | Prevents reinitialization of the Lisp world and keymaps | |
95 | on subsequent starts. */ | |
96 | int initialized; | |
97 | ||
15aaf1b5 RS |
98 | #ifdef DOUG_LEA_MALLOC |
99 | /* Preserves a pointer to the memory allocated that copies that | |
100 | static data inside glibc's malloc. */ | |
101 | void *malloc_state_ptr; | |
102 | /* From glibc, a routine that returns a copy of the malloc internal state. */ | |
103 | extern void *malloc_get_state (); | |
104 | /* From glibc, a routine that overwrites the malloc internal state. */ | |
105 | extern void malloc_set_state (); | |
106 | #endif | |
107 | ||
271c7b7c | 108 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 109 | Lisp_Object Vsystem_type; |
271c7b7c RS |
110 | |
111 | /* Variable whose value is string giving configuration built for. */ | |
112 | Lisp_Object Vsystem_configuration; | |
f0fc0b1a KH |
113 | |
114 | /* Variable whose value is string giving configuration options, | |
115 | for use when reporting bugs. */ | |
116 | Lisp_Object Vsystem_configuration_options; | |
117 | ||
213d0b1f RS |
118 | Lisp_Object Qfile_name_handler_alist; |
119 | ||
5bda49c6 RS |
120 | Lisp_Object Qusr1_signal, Qusr2_signal; |
121 | ||
f927c5ae JB |
122 | /* If non-zero, emacs should not attempt to use an window-specific code, |
123 | but instead should use the virtual terminal under which it was started */ | |
124 | int inhibit_window_system; | |
125 | ||
5aa7f46a JB |
126 | /* If nonzero, set Emacs to run at this priority. This is also used |
127 | in child_setup and sys_suspend to make sure subshells run at normal | |
128 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
129 | int emacs_priority; |
130 | ||
7074fde6 FP |
131 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
132 | data on the first attempt to change it inside asynchronous code. */ | |
133 | int running_asynch_code; | |
134 | ||
647cec74 | 135 | #ifdef BSD_PGRPS |
9ae8f997 JB |
136 | /* See sysdep.c. */ |
137 | extern int inherited_pgroup; | |
138 | #endif | |
139 | ||
f927c5ae JB |
140 | #ifdef HAVE_X_WINDOWS |
141 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
142 | int display_arg; | |
143 | #endif | |
144 | ||
145 | /* An address near the bottom of the stack. | |
146 | Tells GC how to save a copy of the stack. */ | |
147 | char *stack_bottom; | |
148 | ||
8ba50e1a | 149 | #ifdef HAVE_WINDOW_SYSTEM |
f927c5ae | 150 | extern Lisp_Object Vwindow_system; |
8ba50e1a | 151 | #endif /* HAVE_WINDOW_SYSTEM */ |
f927c5ae | 152 | |
1090a161 RS |
153 | extern Lisp_Object Vauto_save_list_file_name; |
154 | ||
f927c5ae JB |
155 | #ifdef USG_SHARED_LIBRARIES |
156 | /* If nonzero, this is the place to put the end of the writable segment | |
157 | at startup. */ | |
158 | ||
159 | unsigned int bss_end = 0; | |
160 | #endif | |
161 | ||
162 | /* Nonzero means running Emacs without interactive terminal. */ | |
163 | ||
164 | int noninteractive; | |
165 | ||
166 | /* Value of Lisp variable `noninteractive'. | |
167 | Normally same as C variable `noninteractive' | |
168 | but nothing terrible happens if user sets this one. */ | |
169 | ||
170 | int noninteractive1; | |
e29f86e4 RS |
171 | |
172 | /* Save argv and argc. */ | |
173 | char **initial_argv; | |
174 | int initial_argc; | |
081bef73 RS |
175 | |
176 | static void sort_args (); | |
dfcf069d | 177 | void syms_of_emacs (); |
f927c5ae JB |
178 | \f |
179 | /* Signal code for the fatal signal that was received */ | |
180 | int fatal_error_code; | |
181 | ||
182 | /* Nonzero if handling a fatal error already */ | |
183 | int fatal_error_in_progress; | |
184 | ||
7317d9e8 | 185 | #ifdef SIGUSR1 |
7317d9e8 RS |
186 | SIGTYPE |
187 | handle_USR1_signal (sig) | |
188 | int sig; | |
189 | { | |
5bda49c6 RS |
190 | struct input_event buf; |
191 | ||
192 | buf.kind = non_ascii_keystroke; | |
193 | buf.code = Qusr1_signal; | |
194 | buf.frame_or_window = Fselected_frame (); | |
195 | buf.modifiers = 0; | |
196 | buf.timestamp = 0; | |
197 | ||
198 | kbd_buffer_store_event (&buf); | |
7317d9e8 | 199 | } |
5bda49c6 | 200 | #endif /* SIGUSR1 */ |
fcf01ad3 | 201 | |
7317d9e8 | 202 | #ifdef SIGUSR2 |
7317d9e8 RS |
203 | SIGTYPE |
204 | handle_USR2_signal (sig) | |
205 | int sig; | |
206 | { | |
5bda49c6 RS |
207 | struct input_event buf; |
208 | ||
209 | buf.kind = non_ascii_keystroke; | |
210 | buf.code = Qusr2_signal; | |
211 | buf.frame_or_window = Fselected_frame (); | |
212 | buf.modifiers = 0; | |
213 | buf.timestamp = 0; | |
214 | ||
215 | kbd_buffer_store_event (&buf); | |
7317d9e8 | 216 | } |
5bda49c6 | 217 | #endif /* SIGUSR2 */ |
7317d9e8 | 218 | |
f927c5ae | 219 | /* Handle bus errors, illegal instruction, etc. */ |
2447c626 | 220 | SIGTYPE |
f927c5ae JB |
221 | fatal_error_signal (sig) |
222 | int sig; | |
223 | { | |
f927c5ae JB |
224 | fatal_error_code = sig; |
225 | signal (sig, SIG_DFL); | |
226 | ||
061b7f94 RS |
227 | TOTALLY_UNBLOCK_INPUT; |
228 | ||
f927c5ae | 229 | /* If fatal error occurs in code below, avoid infinite recursion. */ |
8090eb09 JB |
230 | if (! fatal_error_in_progress) |
231 | { | |
232 | fatal_error_in_progress = 1; | |
f927c5ae | 233 | |
f7ab4e3d | 234 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 235 | } |
f927c5ae JB |
236 | |
237 | #ifdef VMS | |
f927c5ae JB |
238 | LIB$STOP (SS$_ABORT); |
239 | #else | |
8090eb09 JB |
240 | /* Signal the same code; this time it will really be fatal. |
241 | Remember that since we're in a signal handler, the signal we're | |
242 | going to send is probably blocked, so we have to unblock it if we | |
243 | want to really receive it. */ | |
29b89fe0 | 244 | #ifndef MSDOS |
a90538cb | 245 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 246 | #endif |
f927c5ae JB |
247 | kill (getpid (), fatal_error_code); |
248 | #endif /* not VMS */ | |
249 | } | |
271c7b7c RS |
250 | |
251 | #ifdef SIGDANGER | |
252 | ||
16c323ee | 253 | /* Handler for SIGDANGER. */ |
271c7b7c RS |
254 | SIGTYPE |
255 | memory_warning_signal (sig) | |
256 | int sig; | |
257 | { | |
258 | signal (sig, memory_warning_signal); | |
259 | ||
260 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
55796183 RS |
261 | |
262 | /* It might be unsafe to call do_auto_save now. */ | |
263 | force_auto_save_soon (); | |
271c7b7c RS |
264 | } |
265 | #endif | |
fcf01ad3 RS |
266 | |
267 | /* We define abort, rather than using it from the library, | |
c9fe9cce KH |
268 | so that GDB can return from a breakpoint here. |
269 | MSDOS has its own definition on msdos.c */ | |
fcf01ad3 | 270 | |
37e2fdd2 | 271 | #if ! defined (DOS_NT) && ! defined (NO_ABORT) |
fcf01ad3 RS |
272 | void |
273 | abort () | |
274 | { | |
275 | kill (getpid (), SIGABRT); | |
37e2fdd2 RS |
276 | /* This shouldn't be executed, but it prevents a warning. */ |
277 | exit (1); | |
fcf01ad3 | 278 | } |
c9fe9cce | 279 | #endif |
fcf01ad3 | 280 | |
f927c5ae JB |
281 | \f |
282 | /* Code for dealing with Lisp access to the Unix command line */ | |
283 | ||
dfcf069d | 284 | static void |
f927c5ae JB |
285 | init_cmdargs (argc, argv, skip_args) |
286 | int argc; | |
287 | char **argv; | |
288 | int skip_args; | |
289 | { | |
290 | register int i; | |
213d0b1f RS |
291 | Lisp_Object name, dir, tem; |
292 | int count = specpdl_ptr - specpdl; | |
293 | Lisp_Object raw_name; | |
f927c5ae | 294 | |
e29f86e4 RS |
295 | initial_argv = argv; |
296 | initial_argc = argc; | |
297 | ||
213d0b1f RS |
298 | raw_name = build_string (argv[0]); |
299 | ||
300 | /* Add /: to the front of the name | |
301 | if it would otherwise be treated as magic. */ | |
302 | tem = Ffind_file_name_handler (raw_name, Qt); | |
303 | if (! NILP (tem)) | |
304 | raw_name = concat2 (build_string ("/:"), raw_name); | |
305 | ||
306 | Vinvocation_name = Ffile_name_nondirectory (raw_name); | |
307 | Vinvocation_directory = Ffile_name_directory (raw_name); | |
308 | ||
ace40a69 RS |
309 | /* If we got no directory in argv[0], search PATH to find where |
310 | Emacs actually came from. */ | |
311 | if (NILP (Vinvocation_directory)) | |
312 | { | |
313 | Lisp_Object found; | |
314 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 315 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 316 | if (yes == 1) |
213d0b1f RS |
317 | { |
318 | /* Add /: to the front of the name | |
319 | if it would otherwise be treated as magic. */ | |
320 | tem = Ffind_file_name_handler (found, Qt); | |
321 | if (! NILP (tem)) | |
322 | found = concat2 (build_string ("/:"), found); | |
323 | Vinvocation_directory = Ffile_name_directory (found); | |
324 | } | |
ace40a69 | 325 | } |
59653951 | 326 | |
4133b300 RS |
327 | if (!NILP (Vinvocation_directory) |
328 | && NILP (Ffile_name_absolute_p (Vinvocation_directory))) | |
213d0b1f RS |
329 | /* Emacs was started with relative path, like ./emacs. |
330 | Make it absolute. */ | |
4133b300 RS |
331 | Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); |
332 | ||
07f4d123 RS |
333 | Vinstallation_directory = Qnil; |
334 | ||
335 | if (!NILP (Vinvocation_directory)) | |
336 | { | |
337 | dir = Vinvocation_directory; | |
338 | name = Fexpand_file_name (Vinvocation_name, dir); | |
339 | while (1) | |
340 | { | |
f5ab9736 | 341 | Lisp_Object tem, lib_src_exists; |
07f4d123 RS |
342 | Lisp_Object etc_exists, info_exists; |
343 | ||
f5ab9736 RS |
344 | /* See if dir contains subdirs for use by Emacs. |
345 | Check for the ones that would exist in a build directory, | |
346 | not including lisp and info. */ | |
347 | tem = Fexpand_file_name (build_string ("lib-src"), dir); | |
348 | lib_src_exists = Ffile_exists_p (tem); | |
de004cc6 | 349 | |
70344b34 | 350 | #ifdef MSDOS |
de004cc6 RS |
351 | /* MSDOS installations frequently remove lib-src, but we still |
352 | must set installation-directory, or else info won't find | |
353 | its files (it uses the value of installation-directory). */ | |
354 | tem = Fexpand_file_name (build_string ("info"), dir); | |
355 | info_exists = Ffile_exists_p (tem); | |
70344b34 EZ |
356 | #else |
357 | info_exists = Qnil; | |
358 | #endif | |
de004cc6 RS |
359 | |
360 | if (!NILP (lib_src_exists) || !NILP (info_exists)) | |
07f4d123 | 361 | { |
f5ab9736 RS |
362 | tem = Fexpand_file_name (build_string ("etc"), dir); |
363 | etc_exists = Ffile_exists_p (tem); | |
364 | if (!NILP (etc_exists)) | |
07f4d123 | 365 | { |
f5ab9736 RS |
366 | Vinstallation_directory |
367 | = Ffile_name_as_directory (dir); | |
368 | break; | |
07f4d123 RS |
369 | } |
370 | } | |
371 | ||
372 | /* See if dir's parent contains those subdirs. */ | |
f5ab9736 RS |
373 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
374 | lib_src_exists = Ffile_exists_p (tem); | |
de004cc6 | 375 | |
70344b34 EZ |
376 | |
377 | #ifdef MSDOS | |
378 | /* See the MSDOS commentary above. */ | |
de004cc6 RS |
379 | tem = Fexpand_file_name (build_string ("../info"), dir); |
380 | info_exists = Ffile_exists_p (tem); | |
70344b34 EZ |
381 | #else |
382 | info_exists = Qnil; | |
383 | #endif | |
de004cc6 RS |
384 | |
385 | if (!NILP (lib_src_exists) || !NILP (info_exists)) | |
07f4d123 | 386 | { |
f5ab9736 RS |
387 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
388 | etc_exists = Ffile_exists_p (tem); | |
389 | if (!NILP (etc_exists)) | |
07f4d123 | 390 | { |
f5ab9736 RS |
391 | tem = Fexpand_file_name (build_string (".."), dir); |
392 | Vinstallation_directory | |
393 | = Ffile_name_as_directory (tem); | |
394 | break; | |
07f4d123 RS |
395 | } |
396 | } | |
397 | ||
398 | /* If the Emacs executable is actually a link, | |
399 | next try the dir that the link points into. */ | |
400 | tem = Ffile_symlink_p (name); | |
401 | if (!NILP (tem)) | |
402 | { | |
260ec24d | 403 | name = Fexpand_file_name (tem, dir); |
07f4d123 RS |
404 | dir = Ffile_name_directory (name); |
405 | } | |
406 | else | |
407 | break; | |
408 | } | |
409 | } | |
410 | ||
f927c5ae JB |
411 | Vcommand_line_args = Qnil; |
412 | ||
413 | for (i = argc - 1; i >= 0; i--) | |
414 | { | |
415 | if (i == 0 || i > skip_args) | |
416 | Vcommand_line_args | |
417 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
418 | } | |
213d0b1f RS |
419 | |
420 | unbind_to (count, Qnil); | |
f927c5ae | 421 | } |
59653951 JB |
422 | |
423 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
424 | "Return the program name that was used to run Emacs.\n\ | |
425 | Any directory names are omitted.") | |
426 | () | |
427 | { | |
428 | return Fcopy_sequence (Vinvocation_name); | |
429 | } | |
430 | ||
ace40a69 RS |
431 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
432 | 0, 0, 0, | |
433 | "Return the directory name in which the Emacs executable was located") | |
434 | () | |
435 | { | |
436 | return Fcopy_sequence (Vinvocation_directory); | |
437 | } | |
438 | ||
f927c5ae JB |
439 | \f |
440 | #ifdef VMS | |
441 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 442 | #ifdef SHARABLE_LIB_BUG |
f927c5ae | 443 | extern noshare char **environ; |
34035df3 | 444 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
445 | #endif /* LINK_CRTL_SHARE */ |
446 | #endif /* VMS */ | |
447 | ||
0269dedb RS |
448 | #ifdef HAVE_TZSET |
449 | /* A valid but unlikely value for the TZ environment value. | |
450 | It is OK (though a bit slower) if the user actually chooses this value. */ | |
451 | static char dump_tz[] = "UtC0"; | |
452 | #endif | |
453 | ||
a90538cb | 454 | #ifndef ORDINARY_LINK |
efd241cc RS |
455 | /* We don't include crtbegin.o and crtend.o in the link, |
456 | so these functions and variables might be missed. | |
457 | Provide dummy definitions to avoid error. | |
458 | (We don't have any real constructors or destructors.) */ | |
459 | #ifdef __GNUC__ | |
46e65b73 | 460 | #ifndef GCC_CTORS_IN_LIBC |
dfcf069d | 461 | void __do_global_ctors () |
efd241cc | 462 | {} |
dfcf069d | 463 | void __do_global_ctors_aux () |
c83a7064 | 464 | {} |
dfcf069d | 465 | void __do_global_dtors () |
33143604 | 466 | {} |
64c1864a RS |
467 | /* Linux has a bug in its library; avoid an error. */ |
468 | #ifndef LINUX | |
c83a7064 | 469 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 470 | #endif |
c83a7064 | 471 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
46e65b73 | 472 | #endif /* GCC_CTORS_IN_LIBC */ |
dfcf069d | 473 | void __main () |
efd241cc | 474 | {} |
efd241cc | 475 | #endif /* __GNUC__ */ |
a90538cb | 476 | #endif /* ORDINARY_LINK */ |
efd241cc | 477 | |
e2925360 KH |
478 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
479 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null | |
480 | (the argument is supposed to have a value) store in *VALPTR either | |
481 | the next argument or the portion of this one after the equal sign. | |
482 | ARGV is read starting at position *SKIPPTR; this index is advanced | |
483 | by the number of arguments used. | |
484 | ||
485 | Too bad we can't just use getopt for all of this, but we don't have | |
486 | enough information to do it right. */ | |
081bef73 | 487 | |
e2925360 | 488 | static int |
df6530f8 | 489 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
e2925360 | 490 | char **argv; |
df6530f8 | 491 | int argc; |
e2925360 KH |
492 | char *sstr; |
493 | char *lstr; | |
494 | int minlen; | |
495 | char **valptr; | |
496 | int *skipptr; | |
497 | { | |
498 | char *p; | |
499 | int arglen; | |
df6530f8 RS |
500 | char *arg; |
501 | ||
502 | /* Don't access argv[argc]; give up in advance. */ | |
503 | if (argc <= *skipptr + 1) | |
504 | return 0; | |
505 | ||
506 | arg = argv[*skipptr+1]; | |
e2925360 KH |
507 | if (arg == NULL) |
508 | return 0; | |
509 | if (strcmp (arg, sstr) == 0) | |
510 | { | |
511 | if (valptr != NULL) | |
512 | { | |
513 | *valptr = argv[*skipptr+2]; | |
514 | *skipptr += 2; | |
515 | } | |
516 | else | |
517 | *skipptr += 1; | |
518 | return 1; | |
519 | } | |
520 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL | |
521 | ? p - arg : strlen (arg)); | |
c03e1113 | 522 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
e2925360 KH |
523 | return 0; |
524 | else if (valptr == NULL) | |
525 | { | |
526 | *skipptr += 1; | |
527 | return 1; | |
528 | } | |
529 | else if (p != NULL) | |
530 | { | |
531 | *valptr = p+1; | |
532 | *skipptr += 1; | |
533 | return 1; | |
534 | } | |
535 | else if (argv[*skipptr+2] != NULL) | |
536 | { | |
537 | *valptr = argv[*skipptr+2]; | |
538 | *skipptr += 2; | |
539 | return 1; | |
540 | } | |
541 | else | |
542 | { | |
543 | return 0; | |
544 | } | |
545 | } | |
546 | ||
f927c5ae | 547 | /* ARGSUSED */ |
dfcf069d | 548 | int |
f927c5ae JB |
549 | main (argc, argv, envp) |
550 | int argc; | |
551 | char **argv; | |
552 | char **envp; | |
553 | { | |
554 | char stack_bottom_variable; | |
555 | int skip_args = 0; | |
556 | extern int errno; | |
dfcf069d | 557 | extern int sys_nerr; |
53c58b5d RS |
558 | #ifdef HAVE_SETRLIMIT |
559 | struct rlimit rlim; | |
560 | #endif | |
956e3c7e | 561 | int no_loadup = 0; |
f927c5ae | 562 | |
6000fe37 RS |
563 | #ifdef LINUX_SBRK_BUG |
564 | __sbrk (1); | |
565 | #endif | |
566 | ||
15aaf1b5 RS |
567 | #ifdef DOUG_LEA_MALLOC |
568 | if (initialized) | |
569 | { | |
570 | malloc_set_state (malloc_state_ptr); | |
571 | free (malloc_state_ptr); | |
572 | } | |
573 | #endif | |
574 | ||
d785cf9e RS |
575 | #ifdef RUN_TIME_REMAP |
576 | if (initialized) | |
577 | run_time_remap (argv[0]); | |
578 | #endif | |
579 | ||
081bef73 | 580 | sort_args (argc, argv); |
956e3c7e RS |
581 | argc = 0; |
582 | while (argv[argc]) argc++; | |
081bef73 | 583 | |
3270ae6e KH |
584 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args) |
585 | /* We don't know the version number unless this is a dumped Emacs. | |
586 | So ignore --version otherwise. */ | |
587 | && initialized) | |
1702afef RS |
588 | { |
589 | Lisp_Object tem; | |
590 | tem = Fsymbol_value (intern ("emacs-version")); | |
591 | if (!STRINGP (tem)) | |
592 | { | |
593 | fprintf (stderr, "Invalid value of `emacs-version'\n"); | |
594 | exit (1); | |
595 | } | |
596 | else | |
597 | { | |
30ce1583 | 598 | printf ("GNU Emacs %s\n", XSTRING (tem)->data); |
7e8e59d0 | 599 | printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n"); |
b455c665 RS |
600 | printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n"); |
601 | printf ("You may redistribute copies of Emacs\n"); | |
602 | printf ("under the terms of the GNU General Public License.\n"); | |
603 | printf ("For more information about these matters, "); | |
94487c4e | 604 | printf ("see the file named COPYING.\n"); |
1702afef RS |
605 | exit (0); |
606 | } | |
607 | } | |
608 | ||
f927c5ae JB |
609 | /* Map in shared memory, if we are using that. */ |
610 | #ifdef HAVE_SHM | |
df6530f8 | 611 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
f927c5ae JB |
612 | { |
613 | map_in_data (0); | |
614 | /* The shared memory was just restored, which clobbered this. */ | |
615 | skip_args = 1; | |
616 | } | |
617 | else | |
618 | { | |
619 | map_in_data (1); | |
620 | /* The shared memory was just restored, which clobbered this. */ | |
621 | skip_args = 0; | |
622 | } | |
623 | #endif | |
624 | ||
19a36ec6 | 625 | #ifdef NeXT |
b9df9faa KH |
626 | { |
627 | extern int malloc_cookie; | |
628 | /* This helps out unexnext.c. */ | |
629 | if (initialized) | |
630 | if (malloc_jumpstart (malloc_cookie) != 0) | |
631 | printf ("malloc jumpstart failed!\n"); | |
632 | } | |
19a36ec6 RS |
633 | #endif /* NeXT */ |
634 | ||
f927c5ae JB |
635 | #ifdef VMS |
636 | /* If -map specified, map the data file in */ | |
e2925360 KH |
637 | { |
638 | char *file; | |
df6530f8 | 639 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
e2925360 KH |
640 | mapin_data (file); |
641 | } | |
f927c5ae JB |
642 | |
643 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 644 | #ifdef SHARABLE_LIB_BUG |
f927c5ae JB |
645 | /* Bletcherous shared libraries! */ |
646 | if (!stdin) | |
647 | stdin = fdopen (0, "r"); | |
648 | if (!stdout) | |
649 | stdout = fdopen (1, "w"); | |
650 | if (!stderr) | |
651 | stderr = fdopen (2, "w"); | |
652 | if (!environ) | |
653 | environ = envp; | |
34035df3 | 654 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
655 | #endif /* LINK_CRTL_SHARE */ |
656 | #endif /* VMS */ | |
657 | ||
ea2acec5 | 658 | #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK) |
6c2935e9 RS |
659 | /* Extend the stack space available. |
660 | Don't do that if dumping, since some systems (e.g. DJGPP) | |
661 | might define a smaller stack limit at that time. */ | |
662 | if (1 | |
663 | #ifndef CANNOT_DUMP | |
664 | && (!noninteractive || initialized) | |
665 | #endif | |
666 | && !getrlimit (RLIMIT_STACK, &rlim)) | |
53c58b5d | 667 | { |
509a8fcd | 668 | long newlim; |
6c2935e9 | 669 | extern int re_max_failures; |
03effc23 KH |
670 | /* Approximate the amount regex.c needs per unit of re_max_failures. */ |
671 | int ratio = 20 * sizeof (char *); | |
672 | /* Then add 33% to cover the size of the smaller stacks that regex.c | |
673 | successively allocates and discards, on its way to the maximum. */ | |
674 | ratio += ratio / 3; | |
675 | /* Add in some extra to cover | |
676 | what we're likely to use for other reasons. */ | |
677 | newlim = re_max_failures * ratio + 200000; | |
d0381a7f RS |
678 | #ifdef __NetBSD__ |
679 | /* NetBSD (at least NetBSD 1.2G and former) has a bug in its | |
680 | stack allocation routine for new process that the allocation | |
681 | fails if stack limit is not on page boundary. So, round up the | |
682 | new limit to page boundary. */ | |
683 | newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize(); | |
684 | #endif | |
509a8fcd | 685 | if (newlim > rlim.rlim_max) |
6c2935e9 RS |
686 | { |
687 | newlim = rlim.rlim_max; | |
03effc23 KH |
688 | /* Don't let regex.c overflow the stack we have. */ |
689 | re_max_failures = (newlim - 200000) / ratio; | |
6c2935e9 | 690 | } |
509a8fcd RS |
691 | if (rlim.rlim_cur < newlim) |
692 | rlim.rlim_cur = newlim; | |
693 | ||
53c58b5d RS |
694 | setrlimit (RLIMIT_STACK, &rlim); |
695 | } | |
ea2acec5 | 696 | #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */ |
53c58b5d | 697 | |
f927c5ae JB |
698 | /* Record (approximately) where the stack begins. */ |
699 | stack_bottom = &stack_bottom_variable; | |
700 | ||
f927c5ae JB |
701 | #ifdef USG_SHARED_LIBRARIES |
702 | if (bss_end) | |
1d233b80 | 703 | brk ((void *)bss_end); |
f927c5ae JB |
704 | #endif |
705 | ||
706 | clearerr (stdin); | |
9ae8f997 | 707 | |
f927c5ae | 708 | #ifndef SYSTEM_MALLOC |
bf7f4e90 RS |
709 | /* Arrange to get warning messages as memory fills up. */ |
710 | memory_warnings (0, malloc_warning); | |
9ac0d9e0 | 711 | |
bf7f4e90 RS |
712 | /* Call malloc at least once, to run the initial __malloc_hook. */ |
713 | malloc (4); | |
714 | ||
715 | /* Arrange to disable interrupt input inside malloc etc. */ | |
716 | uninterrupt_malloc (); | |
f927c5ae JB |
717 | #endif /* not SYSTEM_MALLOC */ |
718 | ||
29b89fe0 RS |
719 | #ifdef MSDOS |
720 | /* We do all file input/output as binary files. When we need to translate | |
721 | newlines, we do that manually. */ | |
722 | _fmode = O_BINARY; | |
18198bb2 RS |
723 | |
724 | #if __DJGPP__ >= 2 | |
725 | if (!isatty (fileno (stdin))) | |
726 | setmode (fileno (stdin), O_BINARY); | |
727 | if (!isatty (fileno (stdout))) | |
728 | { | |
729 | fflush (stdout); | |
730 | setmode (fileno (stdout), O_BINARY); | |
731 | } | |
732 | #else /* not __DJGPP__ >= 2 */ | |
29b89fe0 RS |
733 | (stdin)->_flag &= ~_IOTEXT; |
734 | (stdout)->_flag &= ~_IOTEXT; | |
735 | (stderr)->_flag &= ~_IOTEXT; | |
18198bb2 | 736 | #endif /* not __DJGPP__ >= 2 */ |
29b89fe0 RS |
737 | #endif /* MSDOS */ |
738 | ||
a422068f | 739 | #ifdef SET_EMACS_PRIORITY |
3005da00 | 740 | if (emacs_priority) |
5aa7f46a | 741 | nice (emacs_priority); |
f927c5ae | 742 | setuid (getuid ()); |
a422068f | 743 | #endif /* SET_EMACS_PRIORITY */ |
f927c5ae | 744 | |
d8b3a65d | 745 | #ifdef EXTRA_INITIALIZE |
a9260219 | 746 | EXTRA_INITIALIZE; |
d8b3a65d RS |
747 | #endif |
748 | ||
f927c5ae JB |
749 | inhibit_window_system = 0; |
750 | ||
4fc0b45b | 751 | /* Handle the -t switch, which specifies filename to use as terminal */ |
956e3c7e RS |
752 | while (1) |
753 | { | |
754 | char *term; | |
755 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) | |
756 | { | |
757 | int result; | |
758 | close (0); | |
759 | close (1); | |
760 | result = open (term, O_RDWR, 2 ); | |
761 | if (result < 0) | |
762 | { | |
763 | char *errstring = strerror (errno); | |
764 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); | |
765 | exit (1); | |
766 | } | |
767 | dup (0); | |
768 | if (! isatty (0)) | |
769 | { | |
770 | fprintf (stderr, "emacs: %s: not a tty\n", term); | |
771 | exit (1); | |
772 | } | |
773 | fprintf (stderr, "Using %s\n", term); | |
8ba50e1a | 774 | #ifdef HAVE_WINDOW_SYSTEM |
956e3c7e | 775 | inhibit_window_system = 1; /* -t => -nw */ |
f927c5ae | 776 | #endif |
956e3c7e RS |
777 | } |
778 | else | |
779 | break; | |
780 | } | |
781 | ||
df6530f8 | 782 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
e2925360 | 783 | inhibit_window_system = 1; |
f927c5ae | 784 | |
e2925360 | 785 | /* Handle the -batch switch, which means don't do interactive display. */ |
f927c5ae | 786 | noninteractive = 0; |
df6530f8 | 787 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
e2925360 KH |
788 | noninteractive = 1; |
789 | ||
790 | /* Handle the --help option, which gives a usage message.. */ | |
df6530f8 | 791 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
f927c5ae | 792 | { |
e2925360 | 793 | printf ("\ |
b519fca5 KH |
794 | Usage: %s [--batch] [-t term] [--terminal term]\n\ |
795 | [-d display] [--display display] [-nw] [--no-windows]\n\ | |
e2925360 | 796 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ |
12411c24 | 797 | [--unibyte] [--multibyte] [--version] [--no-site-file]\n\ |
b519fca5 KH |
798 | [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\ |
799 | [--insert file] [+linenum] file-to-visit [--kill]\n\ | |
e1176af4 | 800 | Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\ |
8a7a3407 | 801 | the Bugs section of the Emacs manual or the file BUGS.\n", argv[0]); |
e2925360 | 802 | exit (0); |
f927c5ae JB |
803 | } |
804 | ||
edb85f59 RS |
805 | if (! noninteractive) |
806 | { | |
807 | #ifdef BSD_PGRPS | |
808 | if (initialized) | |
809 | { | |
810 | inherited_pgroup = EMACS_GETPGRP (0); | |
811 | setpgrp (0, getpid ()); | |
812 | } | |
813 | #else | |
814 | #if defined (USG5) && defined (INTERRUPT_INPUT) | |
815 | setpgrp (); | |
816 | #endif | |
817 | #endif | |
818 | } | |
819 | ||
fb8e9847 JB |
820 | #ifdef POSIX_SIGNALS |
821 | init_signals (); | |
822 | #endif | |
823 | ||
1efa2983 KH |
824 | /* Don't catch SIGHUP if dumping. */ |
825 | if (1 | |
826 | #ifndef CANNOT_DUMP | |
827 | && initialized | |
828 | #endif | |
829 | ) | |
830 | { | |
57e3d22a | 831 | sigblock (sigmask (SIGHUP)); |
1efa2983 KH |
832 | /* In --batch mode, don't catch SIGHUP if already ignored. |
833 | That makes nohup work. */ | |
834 | if (! noninteractive | |
835 | || signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
836 | signal (SIGHUP, fatal_error_signal); | |
57e3d22a | 837 | sigunblock (sigmask (SIGHUP)); |
1efa2983 KH |
838 | } |
839 | ||
f927c5ae JB |
840 | if ( |
841 | #ifndef CANNOT_DUMP | |
842 | ! noninteractive || initialized | |
843 | #else | |
844 | 1 | |
845 | #endif | |
846 | ) | |
847 | { | |
1efa2983 | 848 | /* Don't catch these signals in batch mode if dumping. |
f927c5ae JB |
849 | On some machines, this sets static data that would make |
850 | signal fail to work right when the dumped Emacs is run. */ | |
f927c5ae JB |
851 | signal (SIGQUIT, fatal_error_signal); |
852 | signal (SIGILL, fatal_error_signal); | |
853 | signal (SIGTRAP, fatal_error_signal); | |
7317d9e8 RS |
854 | #ifdef SIGUSR1 |
855 | signal (SIGUSR1, handle_USR1_signal); | |
856 | #ifdef SIGUSR2 | |
857 | signal (SIGUSR2, handle_USR2_signal); | |
858 | #endif | |
859 | #endif | |
99e372cd RS |
860 | #ifdef SIGABRT |
861 | signal (SIGABRT, fatal_error_signal); | |
862 | #endif | |
863 | #ifdef SIGHWE | |
864 | signal (SIGHWE, fatal_error_signal); | |
865 | #endif | |
866 | #ifdef SIGPRE | |
867 | signal (SIGPRE, fatal_error_signal); | |
868 | #endif | |
869 | #ifdef SIGORE | |
870 | signal (SIGORE, fatal_error_signal); | |
871 | #endif | |
872 | #ifdef SIGUME | |
873 | signal (SIGUME, fatal_error_signal); | |
874 | #endif | |
875 | #ifdef SIGDLK | |
876 | signal (SIGDLK, fatal_error_signal); | |
877 | #endif | |
878 | #ifdef SIGCPULIM | |
879 | signal (SIGCPULIM, fatal_error_signal); | |
880 | #endif | |
a90538cb JB |
881 | #ifdef SIGIOT |
882 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 883 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 884 | #endif |
f927c5ae JB |
885 | #ifdef SIGEMT |
886 | signal (SIGEMT, fatal_error_signal); | |
887 | #endif | |
888 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 889 | #ifdef SIGBUS |
f927c5ae | 890 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 891 | #endif |
f927c5ae | 892 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 893 | #ifdef SIGSYS |
f927c5ae | 894 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 895 | #endif |
f927c5ae JB |
896 | signal (SIGTERM, fatal_error_signal); |
897 | #ifdef SIGXCPU | |
898 | signal (SIGXCPU, fatal_error_signal); | |
899 | #endif | |
900 | #ifdef SIGXFSZ | |
901 | signal (SIGXFSZ, fatal_error_signal); | |
902 | #endif /* SIGXFSZ */ | |
903 | ||
271c7b7c RS |
904 | #ifdef SIGDANGER |
905 | /* This just means available memory is getting low. */ | |
906 | signal (SIGDANGER, memory_warning_signal); | |
907 | #endif | |
908 | ||
f927c5ae | 909 | #ifdef AIX |
56e034fa RS |
910 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
911 | signal (SIGXCPU, fatal_error_signal); | |
0aef8561 | 912 | #ifndef _I386 |
f927c5ae | 913 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 914 | #endif |
f927c5ae JB |
915 | signal (SIGGRANT, fatal_error_signal); |
916 | signal (SIGRETRACT, fatal_error_signal); | |
917 | signal (SIGSOUND, fatal_error_signal); | |
918 | signal (SIGMSG, fatal_error_signal); | |
919 | #endif /* AIX */ | |
920 | } | |
921 | ||
922 | noninteractive1 = noninteractive; | |
923 | ||
924 | /* Perform basic initializations (not merely interning symbols) */ | |
925 | ||
926 | if (!initialized) | |
927 | { | |
928 | init_alloc_once (); | |
929 | init_obarray (); | |
930 | init_eval_once (); | |
270ce821 KH |
931 | init_charset_once (); |
932 | init_coding_once (); | |
f927c5ae | 933 | init_syntax_once (); /* Create standard syntax table. */ |
270ce821 | 934 | init_category_once (); /* Create standard category table. */ |
f927c5ae JB |
935 | /* Must be done before init_buffer */ |
936 | init_casetab_once (); | |
937 | init_buffer_once (); /* Create buffer table and some buffers */ | |
938 | init_minibuf_once (); /* Create list of minibuffers */ | |
939 | /* Must precede init_window_once */ | |
940 | init_window_once (); /* Init the window system */ | |
680256a8 | 941 | init_fileio_once (); /* Must precede any path manipulation. */ |
f927c5ae JB |
942 | } |
943 | ||
944 | init_alloc (); | |
f927c5ae | 945 | init_eval (); |
0968d4ee | 946 | init_coding (); |
f927c5ae | 947 | init_data (); |
7074fde6 | 948 | running_asynch_code = 0; |
0e956009 | 949 | |
a08a816a RS |
950 | /* Handle --unibyte and the EMACS_UNIBYTE envvar, |
951 | but not while dumping. */ | |
952 | if ( | |
953 | #ifndef CANNOT_DUMP | |
954 | ! noninteractive || initialized | |
955 | #else | |
956 | 1 | |
957 | #endif | |
958 | ) | |
959 | { | |
960 | int inhibit_unibyte = 0; | |
961 | ||
962 | /* --multibyte overrides EMACS_UNIBYTE. */ | |
963 | if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args) | |
964 | || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)) | |
965 | inhibit_unibyte = 1; | |
966 | ||
967 | /* --unibyte requests that we set up to do everything with single-byte | |
968 | buffers and strings. We need to handle this before calling | |
969 | init_lread, init_editfns and other places that generate Lisp strings | |
970 | from text in the environment. */ | |
c0218e1b DL |
971 | /* Actually this shouldn't be needed as of 20.4 in a generally |
972 | unibyte environment. As handa says, environment values | |
973 | aren't now decoded; also existing buffers are now made | |
974 | unibyte during startup if .emacs sets unibyte. Tested with | |
975 | 8-bit data in environment variables and /etc/passwd, setting | |
976 | unibyte and Latin-1 in .emacs. -- Dave Love */ | |
a08a816a RS |
977 | if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args) |
978 | || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args) | |
979 | || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte)) | |
980 | { | |
981 | Lisp_Object old_log_max; | |
982 | Lisp_Object symbol, tail; | |
983 | ||
984 | symbol = intern ("default-enable-multibyte-characters"); | |
985 | Fset (symbol, Qnil); | |
986 | ||
6524291c KH |
987 | if (initialized) |
988 | { | |
989 | /* Erase pre-dump messages in *Messages* now so no abort. */ | |
990 | old_log_max = Vmessage_log_max; | |
991 | XSETFASTINT (Vmessage_log_max, 0); | |
992 | message_dolog ("", 0, 1, 0); | |
993 | Vmessage_log_max = old_log_max; | |
994 | } | |
a08a816a | 995 | |
3e75bb9e | 996 | for (tail = Vbuffer_alist; CONSP (tail); |
a08a816a RS |
997 | tail = XCONS (tail)->cdr) |
998 | { | |
999 | Lisp_Object buffer; | |
1000 | ||
3e75bb9e | 1001 | buffer = Fcdr (XCONS (tail)->car); |
a08a816a RS |
1002 | /* Verify that all buffers are empty now, as they |
1003 | ought to be. */ | |
1004 | if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer))) | |
1005 | abort (); | |
1006 | /* It is safe to do this crudely in an empty buffer. */ | |
1007 | XBUFFER (buffer)->enable_multibyte_characters = Qnil; | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | ||
956e3c7e RS |
1012 | no_loadup |
1013 | = !argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args); | |
1014 | ||
1015 | ||
1016 | #ifdef HAVE_X_WINDOWS | |
1017 | /* Stupid kludge to catch command-line display spec. We can't | |
1018 | handle this argument entirely in window system dependent code | |
1019 | because we don't even know which window system dependent code | |
1020 | to run until we've recognized this argument. */ | |
1021 | { | |
1022 | char *displayname = 0; | |
1023 | int i; | |
1024 | int count_before = skip_args; | |
1025 | ||
1026 | /* Skip any number of -d options, but only use the last one. */ | |
1027 | while (1) | |
1028 | { | |
1029 | int count_before_this = skip_args; | |
1030 | ||
1031 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) | |
1032 | display_arg = 1; | |
1033 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) | |
1034 | display_arg = 1; | |
1035 | else | |
1036 | break; | |
1037 | ||
1038 | count_before = count_before_this; | |
1039 | } | |
1040 | ||
1041 | /* If we have the form --display=NAME, | |
1042 | convert it into -d name. | |
1043 | This requires inserting a new element into argv. */ | |
1044 | if (displayname != 0 && skip_args - count_before == 1) | |
1045 | { | |
1046 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); | |
1047 | int j; | |
1048 | ||
1049 | for (j = 0; j < count_before + 1; j++) | |
1050 | new[j] = argv[j]; | |
1051 | new[count_before + 1] = "-d"; | |
1052 | new[count_before + 2] = displayname; | |
1053 | for (j = count_before + 2; j <argc; j++) | |
1054 | new[j + 1] = argv[j]; | |
1055 | argv = new; | |
1056 | argc++; | |
1057 | } | |
1058 | /* Change --display to -d, when its arg is separate. */ | |
1059 | else if (displayname != 0 && skip_args > count_before | |
1060 | && argv[count_before + 1][1] == '-') | |
1061 | argv[count_before + 1] = "-d"; | |
1062 | ||
1063 | /* Don't actually discard this arg. */ | |
1064 | skip_args = count_before; | |
1065 | } | |
1066 | #endif | |
1067 | ||
1068 | /* argmatch must not be used after here, | |
1069 | except when bulding temacs | |
1070 | because the -d argument has not been skipped in skip_args. */ | |
1071 | ||
29b89fe0 RS |
1072 | #ifdef MSDOS |
1073 | /* Call early 'cause init_environment needs it. */ | |
1074 | init_dosfns (); | |
1075 | /* Set defaults for several environment variables. */ | |
18198bb2 RS |
1076 | if (initialized) |
1077 | init_environment (argc, argv, skip_args); | |
1078 | else | |
d1fc6752 | 1079 | tzset (); |
18198bb2 | 1080 | #endif /* MSDOS */ |
29b89fe0 | 1081 | |
8ba50e1a GV |
1082 | #ifdef WINDOWSNT |
1083 | /* Initialize environment from registry settings. */ | |
a3a58294 | 1084 | init_environment (argv); |
41f339d4 | 1085 | init_ntproc (); /* must precede init_editfns */ |
8ba50e1a GV |
1086 | #endif |
1087 | ||
0e956009 JB |
1088 | /* egetenv is a pretty low-level facility, which may get called in |
1089 | many circumstances; it seems flimsy to put off initializing it | |
1090 | until calling init_callproc. */ | |
1091 | set_process_environment (); | |
93aed04d RS |
1092 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
1093 | if this is not done. Do it after set_process_environment so that we | |
1094 | don't pollute Vprocess_environment. */ | |
1095 | #ifdef AIX | |
1096 | putenv ("LANG=C"); | |
1097 | #endif | |
0e956009 | 1098 | |
ace40a69 RS |
1099 | init_buffer (); /* Init default directory of main buffer */ |
1100 | ||
7928f0b5 | 1101 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 1102 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
380e25b8 RS |
1103 | |
1104 | if (initialized) | |
1105 | { | |
1106 | /* Erase any pre-dump messages in the message log, to avoid confusion */ | |
1107 | Lisp_Object old_log_max; | |
1108 | old_log_max = Vmessage_log_max; | |
1109 | XSETFASTINT (Vmessage_log_max, 0); | |
f6fe7bb5 | 1110 | message_dolog ("", 0, 1, 0); |
380e25b8 RS |
1111 | Vmessage_log_max = old_log_max; |
1112 | } | |
1113 | ||
7928f0b5 | 1114 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 1115 | init_lread (); |
f927c5ae | 1116 | |
8bb697c0 RS |
1117 | /* Intern the names of all standard functions and variables; |
1118 | define standard keys. */ | |
f927c5ae JB |
1119 | |
1120 | if (!initialized) | |
1121 | { | |
1122 | /* The basic levels of Lisp must come first */ | |
1123 | /* And data must come first of all | |
1124 | for the sake of symbols like error-message */ | |
1125 | syms_of_data (); | |
1126 | syms_of_alloc (); | |
fb8e9847 | 1127 | syms_of_lread (); |
f927c5ae JB |
1128 | syms_of_print (); |
1129 | syms_of_eval (); | |
1130 | syms_of_fns (); | |
f927c5ae | 1131 | syms_of_floatfns (); |
f927c5ae JB |
1132 | |
1133 | syms_of_abbrev (); | |
1134 | syms_of_buffer (); | |
1135 | syms_of_bytecode (); | |
1136 | syms_of_callint (); | |
1137 | syms_of_casefiddle (); | |
1138 | syms_of_casetab (); | |
1139 | syms_of_callproc (); | |
270ce821 KH |
1140 | syms_of_category (); |
1141 | syms_of_ccl (); | |
1142 | syms_of_charset (); | |
f927c5ae JB |
1143 | syms_of_cmds (); |
1144 | #ifndef NO_DIR_LIBRARY | |
1145 | syms_of_dired (); | |
1146 | #endif /* not NO_DIR_LIBRARY */ | |
1147 | syms_of_display (); | |
1148 | syms_of_doc (); | |
1149 | syms_of_editfns (); | |
1150 | syms_of_emacs (); | |
1151 | syms_of_fileio (); | |
270ce821 | 1152 | syms_of_coding (); /* This should be after syms_of_fileio. */ |
f927c5ae JB |
1153 | #ifdef CLASH_DETECTION |
1154 | syms_of_filelock (); | |
1155 | #endif /* CLASH_DETECTION */ | |
1156 | syms_of_indent (); | |
c2c5ed2c | 1157 | syms_of_insdel (); |
f927c5ae JB |
1158 | syms_of_keyboard (); |
1159 | syms_of_keymap (); | |
1160 | syms_of_macros (); | |
1161 | syms_of_marker (); | |
1162 | syms_of_minibuf (); | |
1163 | syms_of_mocklisp (); | |
f927c5ae | 1164 | syms_of_process (); |
f927c5ae | 1165 | syms_of_search (); |
1cbd5d9d | 1166 | syms_of_frame (); |
f927c5ae | 1167 | syms_of_syntax (); |
0d934e7b | 1168 | syms_of_term (); |
f927c5ae | 1169 | syms_of_undo (); |
bef79ee4 JA |
1170 | |
1171 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
1172 | syms_of_textprop (); | |
f927c5ae JB |
1173 | #ifdef VMS |
1174 | syms_of_vmsproc (); | |
1175 | #endif /* VMS */ | |
05687c54 RS |
1176 | #ifdef WINDOWSNT |
1177 | syms_of_ntproc (); | |
1178 | #endif /* WINDOWSNT */ | |
f927c5ae JB |
1179 | syms_of_window (); |
1180 | syms_of_xdisp (); | |
1181 | #ifdef HAVE_X_WINDOWS | |
72412588 | 1182 | syms_of_xterm (); |
f927c5ae | 1183 | syms_of_xfns (); |
270ce821 | 1184 | syms_of_fontset (); |
72412588 JB |
1185 | #ifdef HAVE_X11 |
1186 | syms_of_xselect (); | |
1187 | #endif | |
f927c5ae JB |
1188 | #endif /* HAVE_X_WINDOWS */ |
1189 | ||
1e9c210b | 1190 | #ifndef HAVE_NTGUI |
dcdcce1a | 1191 | syms_of_xfaces (); |
6c850f3c | 1192 | syms_of_xmenu (); |
1e9c210b | 1193 | #endif |
6c850f3c | 1194 | |
8ba50e1a | 1195 | #ifdef HAVE_NTGUI |
fbd6baed GV |
1196 | syms_of_w32term (); |
1197 | syms_of_w32fns (); | |
1198 | syms_of_w32faces (); | |
1199 | syms_of_w32select (); | |
1200 | syms_of_w32menu (); | |
02062ac3 | 1201 | syms_of_fontset (); |
8ba50e1a GV |
1202 | #endif /* HAVE_NTGUI */ |
1203 | ||
f927c5ae JB |
1204 | #ifdef SYMS_SYSTEM |
1205 | SYMS_SYSTEM; | |
1206 | #endif | |
1207 | ||
1208 | #ifdef SYMS_MACHINE | |
1209 | SYMS_MACHINE; | |
1210 | #endif | |
1211 | ||
1212 | keys_of_casefiddle (); | |
1213 | keys_of_cmds (); | |
1214 | keys_of_buffer (); | |
1215 | keys_of_keyboard (); | |
1216 | keys_of_keymap (); | |
1217 | keys_of_macros (); | |
1218 | keys_of_minibuf (); | |
1219 | keys_of_window (); | |
5e67fbc2 | 1220 | keys_of_frame (); |
f927c5ae JB |
1221 | } |
1222 | ||
8bb697c0 RS |
1223 | if (!noninteractive) |
1224 | { | |
1225 | #ifdef VMS | |
1226 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ | |
1227 | #endif /* VMS */ | |
1228 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
1229 | } | |
1230 | init_keyboard (); /* This too must precede init_sys_modes */ | |
1231 | #ifdef VMS | |
1232 | init_vmsproc (); /* And this too. */ | |
1233 | #endif /* VMS */ | |
1234 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
1235 | init_xdisp (); | |
1236 | init_macros (); | |
1237 | init_editfns (); | |
1238 | #ifdef LISP_FLOAT_TYPE | |
1239 | init_floatfns (); | |
1240 | #endif | |
1241 | #ifdef VMS | |
1242 | init_vmsfns (); | |
1243 | #endif /* VMS */ | |
1244 | init_process (); | |
1245 | ||
f927c5ae JB |
1246 | if (!initialized) |
1247 | { | |
e2925360 | 1248 | char *file; |
303901fb | 1249 | /* Handle -l loadup, args passed by Makefile. */ |
df6530f8 | 1250 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
f927c5ae | 1251 | Vtop_level = Fcons (intern ("load"), |
e2925360 | 1252 | Fcons (build_string (file), Qnil)); |
f927c5ae JB |
1253 | #ifdef CANNOT_DUMP |
1254 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
956e3c7e | 1255 | if (! no_loadup) |
f927c5ae JB |
1256 | Vtop_level = Fcons (intern ("load"), |
1257 | Fcons (build_string ("loadup.el"), Qnil)); | |
1258 | #endif /* CANNOT_DUMP */ | |
1259 | } | |
1260 | ||
93572b43 KH |
1261 | if (initialized) |
1262 | { | |
0269dedb RS |
1263 | #ifdef HAVE_TZSET |
1264 | { | |
1265 | /* If the execution TZ happens to be the same as the dump TZ, | |
1266 | change it to some other value and then change it back, | |
1267 | to force the underlying implementation to reload the TZ info. | |
1268 | This is needed on implementations that load TZ info from files, | |
1269 | since the TZ file contents may differ between dump and execution. */ | |
1270 | char *tz = getenv ("TZ"); | |
1271 | if (tz && !strcmp (tz, dump_tz)) | |
1272 | { | |
1273 | ++*tz; | |
1274 | tzset (); | |
1275 | --*tz; | |
1276 | } | |
1277 | } | |
1278 | #endif | |
93572b43 KH |
1279 | } |
1280 | ||
e610ea43 RS |
1281 | /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on |
1282 | FreeBSD. It might work on some other systems too. | |
1283 | Give it a try and tell me if it works on your system. */ | |
1284 | #ifdef __FreeBSD__ | |
1285 | #ifdef PROFILING | |
1286 | if (initialized) | |
1287 | { | |
1288 | extern void _mcleanup (); | |
1289 | extern char etext; | |
b063fa35 | 1290 | extern Lisp_Object Fredraw_frame (); |
e610ea43 | 1291 | atexit (_mcleanup); |
8b64df46 RS |
1292 | /* This uses Fredraw_frame because that function |
1293 | comes first in the Emacs executable. | |
1294 | It might be better to use something that gives | |
1295 | the start of the text segment, but start_of_text | |
1296 | is not defined on all systems now. */ | |
b063fa35 | 1297 | monstartup (Fredraw_frame, &etext); |
e610ea43 RS |
1298 | } |
1299 | else | |
1300 | moncontrol (0); | |
1301 | #endif | |
1302 | #endif | |
1303 | ||
f927c5ae JB |
1304 | initialized = 1; |
1305 | ||
e7536cff RS |
1306 | #ifdef LOCALTIME_CACHE |
1307 | /* Some versions of localtime have a bug. They cache the value of the time | |
279cc2b8 JB |
1308 | zone rather than looking it up every time. Since localtime() is |
1309 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
1310 | results in localtime ignoring the TZ environment variable. |
1311 | This flushes the new TZ value into localtime. */ | |
1312 | tzset (); | |
e7536cff | 1313 | #endif /* defined (LOCALTIME_CACHE) */ |
279cc2b8 | 1314 | |
f927c5ae JB |
1315 | /* Enter editor command loop. This never returns. */ |
1316 | Frecursive_edit (); | |
1317 | /* NOTREACHED */ | |
1318 | } | |
1319 | \f | |
081bef73 RS |
1320 | /* Sort the args so we can find the most important ones |
1321 | at the beginning of argv. */ | |
1322 | ||
1323 | /* First, here's a table of all the standard options. */ | |
1324 | ||
1325 | struct standard_args | |
1326 | { | |
1327 | char *name; | |
1328 | char *longname; | |
1329 | int priority; | |
1330 | int nargs; | |
1331 | }; | |
1332 | ||
1333 | struct standard_args standard_args[] = | |
1334 | { | |
05922407 RS |
1335 | { "-version", "--version", 150, 0 }, |
1336 | #ifdef HAVE_SHM | |
1337 | { "-nl", "--no-shared-memory", 140, 0 }, | |
1338 | #endif | |
2725719a | 1339 | #ifdef VMS |
05922407 | 1340 | { "-map", "--map-data", 130, 0 }, |
2725719a | 1341 | #endif |
05922407 RS |
1342 | { "-t", "--terminal", 120, 1 }, |
1343 | { "-nw", "--no-windows", 110, 0 }, | |
1344 | { "-batch", "--batch", 100, 0 }, | |
1345 | { "-help", "--help", 90, 0 }, | |
956e3c7e RS |
1346 | { "-no-unibyte", "--no-unibyte", 83, 0 }, |
1347 | { "-multibyte", "--multibyte", 82, 0 }, | |
1348 | { "-unibyte", "--unibyte", 81, 0 }, | |
1349 | { "-no-multibyte", "--no-multibyte", 80, 0 }, | |
05922407 | 1350 | #ifdef CANNOT_DUMP |
956e3c7e | 1351 | { "-nl", "--no-loadup", 70, 0 }, |
05922407 | 1352 | #endif |
956e3c7e RS |
1353 | /* -d must come last before the options handled in startup.el. */ |
1354 | { "-d", "--display", 60, 1 }, | |
1355 | { "-display", 0, 60, 1 }, | |
05922407 | 1356 | /* Now for the options handled in startup.el. */ |
081bef73 RS |
1357 | { "-q", "--no-init-file", 50, 0 }, |
1358 | { "-no-init-file", 0, 50, 0 }, | |
1359 | { "-no-site-file", "--no-site-file", 40, 0 }, | |
1360 | { "-u", "--user", 30, 1 }, | |
1361 | { "-user", 0, 30, 1 }, | |
1362 | { "-debug-init", "--debug-init", 20, 0 }, | |
adab4483 KH |
1363 | { "-i", "--icon-type", 15, 0 }, |
1364 | { "-itype", 0, 15, 0 }, | |
f2bc3538 | 1365 | { "-iconic", "--iconic", 15, 0 }, |
081bef73 RS |
1366 | { "-bg", "--background-color", 10, 1 }, |
1367 | { "-background", 0, 10, 1 }, | |
1368 | { "-fg", "--foreground-color", 10, 1 }, | |
1369 | { "-foreground", 0, 10, 1 }, | |
1370 | { "-bd", "--border-color", 10, 1 }, | |
1371 | { "-bw", "--border-width", 10, 1 }, | |
1372 | { "-ib", "--internal-border", 10, 1 }, | |
1373 | { "-ms", "--mouse-color", 10, 1 }, | |
1374 | { "-cr", "--cursor-color", 10, 1 }, | |
1375 | { "-fn", "--font", 10, 1 }, | |
1376 | { "-font", 0, 10, 1 }, | |
1377 | { "-g", "--geometry", 10, 1 }, | |
1378 | { "-geometry", 0, 10, 1 }, | |
1379 | { "-T", "--title", 10, 1 }, | |
ae63ae52 | 1380 | { "-title", 0, 10, 1 }, |
081bef73 RS |
1381 | { "-name", "--name", 10, 1 }, |
1382 | { "-xrm", "--xrm", 10, 1 }, | |
fcdeb5d9 RS |
1383 | { "-r", "--reverse-video", 5, 0 }, |
1384 | { "-rv", 0, 5, 0 }, | |
1385 | { "-reverse", 0, 5, 0 }, | |
ae63ae52 | 1386 | { "-hb", "--horizontal-scroll-bars", 5, 0 }, |
fcdeb5d9 | 1387 | { "-vb", "--vertical-scroll-bars", 5, 0 }, |
fcdeb5d9 RS |
1388 | /* These have the same priority as ordinary file name args, |
1389 | so they are not reordered with respect to those. */ | |
4af9e0b3 RS |
1390 | { "-L", "--directory", 0, 1 }, |
1391 | { "-directory", 0, 0, 1 }, | |
fcdeb5d9 RS |
1392 | { "-l", "--load", 0, 1 }, |
1393 | { "-load", 0, 0, 1 }, | |
1394 | { "-f", "--funcall", 0, 1 }, | |
1395 | { "-funcall", 0, 0, 1 }, | |
575985b1 | 1396 | { "-eval", "--eval", 0, 1 }, |
2e13f8e9 RS |
1397 | { "-find-file", "--find-file", 0, 1 }, |
1398 | { "-visit", "--visit", 0, 1 }, | |
fcdeb5d9 | 1399 | { "-insert", "--insert", 0, 1 }, |
f2bc3538 | 1400 | /* This should be processed after ordinary file name args and the like. */ |
fcdeb5d9 | 1401 | { "-kill", "--kill", -10, 0 }, |
081bef73 RS |
1402 | }; |
1403 | ||
1404 | /* Reorder the elements of ARGV (assumed to have ARGC elements) | |
1405 | so that the highest priority ones come first. | |
1406 | Do not change the order of elements of equal priority. | |
956e3c7e RS |
1407 | If an option takes an argument, keep it and its argument together. |
1408 | ||
1409 | If an option that takes no argument appears more | |
1410 | than once, eliminate all but one copy of it. */ | |
081bef73 RS |
1411 | |
1412 | static void | |
1413 | sort_args (argc, argv) | |
1414 | int argc; | |
1415 | char **argv; | |
1416 | { | |
1417 | char **new = (char **) xmalloc (sizeof (char *) * argc); | |
1418 | /* For each element of argv, | |
1419 | the corresponding element of options is: | |
1420 | 0 for an option that takes no arguments, | |
1421 | 1 for an option that takes one argument, etc. | |
1422 | -1 for an ordinary non-option argument. */ | |
6dad9359 | 1423 | int *options = (int *) xmalloc (sizeof (int) * argc); |
081bef73 RS |
1424 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
1425 | int to = 1; | |
956e3c7e | 1426 | int incoming_used = 1; |
081bef73 RS |
1427 | int from; |
1428 | int i; | |
c96f26f4 | 1429 | int end_of_options = argc; |
081bef73 RS |
1430 | |
1431 | /* Categorize all the options, | |
1432 | and figure out which argv elts are option arguments. */ | |
1433 | for (from = 1; from < argc; from++) | |
1434 | { | |
1435 | options[from] = -1; | |
fcdeb5d9 | 1436 | priority[from] = 0; |
081bef73 RS |
1437 | if (argv[from][0] == '-') |
1438 | { | |
1439 | int match, thislen; | |
1440 | char *equals; | |
1441 | ||
c96f26f4 RS |
1442 | /* If we have found "--", don't consider |
1443 | any more arguments as options. */ | |
249443b6 | 1444 | if (argv[from][1] == '-' && argv[from][2] == 0) |
c96f26f4 RS |
1445 | { |
1446 | /* Leave the "--", and everything following it, at the end. */ | |
1447 | for (; from < argc; from++) | |
1448 | { | |
1449 | priority[from] = -100; | |
1450 | options[from] = -1; | |
1451 | } | |
1452 | break; | |
1453 | } | |
1454 | ||
081bef73 RS |
1455 | /* Look for a match with a known old-fashioned option. */ |
1456 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1457 | if (!strcmp (argv[from], standard_args[i].name)) | |
1458 | { | |
1459 | options[from] = standard_args[i].nargs; | |
1460 | priority[from] = standard_args[i].priority; | |
fd76ec52 RS |
1461 | if (from + standard_args[i].nargs >= argc) |
1462 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1463 | from += standard_args[i].nargs; |
1464 | goto done; | |
1465 | } | |
1466 | ||
1467 | /* Look for a match with a known long option. | |
1468 | MATCH is -1 if no match so far, -2 if two or more matches so far, | |
1469 | >= 0 (the table index of the match) if just one match so far. */ | |
1470 | if (argv[from][1] == '-') | |
1471 | { | |
1472 | match = -1; | |
1473 | thislen = strlen (argv[from]); | |
1474 | equals = index (argv[from], '='); | |
1475 | if (equals != 0) | |
1476 | thislen = equals - argv[from]; | |
1477 | ||
f609ef57 KH |
1478 | for (i = 0; |
1479 | i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1480 | if (standard_args[i].longname | |
1481 | && !strncmp (argv[from], standard_args[i].longname, | |
1482 | thislen)) | |
081bef73 RS |
1483 | { |
1484 | if (match == -1) | |
1485 | match = i; | |
1486 | else | |
1487 | match = -2; | |
1488 | } | |
1489 | ||
1490 | /* If we found exactly one match, use that. */ | |
1491 | if (match >= 0) | |
1492 | { | |
1493 | options[from] = standard_args[match].nargs; | |
1494 | priority[from] = standard_args[match].priority; | |
1495 | /* If --OPTION=VALUE syntax is used, | |
1496 | this option uses just one argv element. */ | |
1497 | if (equals != 0) | |
1498 | options[from] = 0; | |
fd76ec52 RS |
1499 | if (from + options[from] >= argc) |
1500 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1501 | from += options[from]; |
1502 | } | |
1503 | } | |
1504 | done: ; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | /* Copy the arguments, in order of decreasing priority, to NEW. */ | |
1509 | new[0] = argv[0]; | |
956e3c7e | 1510 | while (incoming_used < argc) |
081bef73 RS |
1511 | { |
1512 | int best = -1; | |
2c70c992 | 1513 | int best_priority = -9999; |
081bef73 RS |
1514 | |
1515 | /* Find the highest priority remaining option. | |
1516 | If several have equal priority, take the first of them. */ | |
1517 | for (from = 1; from < argc; from++) | |
1518 | { | |
1519 | if (argv[from] != 0 && priority[from] > best_priority) | |
1520 | { | |
1521 | best_priority = priority[from]; | |
1522 | best = from; | |
1523 | } | |
1524 | /* Skip option arguments--they are tied to the options. */ | |
1525 | if (options[from] > 0) | |
1526 | from += options[from]; | |
1527 | } | |
1528 | ||
1529 | if (best < 0) | |
1530 | abort (); | |
1531 | ||
956e3c7e RS |
1532 | /* Copy the highest priority remaining option, with its args, to NEW. |
1533 | Unless it is a duplicate of the previous one. */ | |
1534 | if (! (options[best] == 0 | |
1535 | && ! strcmp (new[to - 1], argv[best]))) | |
1536 | { | |
1537 | new[to++] = argv[best]; | |
1538 | for (i = 0; i < options[best]; i++) | |
1539 | new[to++] = argv[best + i + 1]; | |
1540 | } | |
1541 | ||
1542 | incoming_used += 1 + (options[best] > 0 ? options[best] : 0); | |
081bef73 RS |
1543 | |
1544 | /* Clear out this option in ARGV. */ | |
1545 | argv[best] = 0; | |
1546 | for (i = 0; i < options[best]; i++) | |
1547 | argv[best + i + 1] = 0; | |
1548 | } | |
1549 | ||
81b7af72 RS |
1550 | /* If duplicate options were deleted, fill up extra space with null ptrs. */ |
1551 | while (to < argc) | |
1552 | new[to++] = 0; | |
1553 | ||
6dad9359 | 1554 | bcopy (new, argv, sizeof (char *) * argc); |
0bf591da RS |
1555 | |
1556 | free (options); | |
1557 | free (new); | |
1558 | free (priority); | |
081bef73 RS |
1559 | } |
1560 | \f | |
f927c5ae | 1561 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
edc8ae07 | 1562 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
1563 | If ARG is an integer, return ARG as the exit program code.\n\ |
1564 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
1565 | The value of `kill-emacs-hook', if not void,\n\ | |
1566 | is a list of functions (of no args),\n\ | |
1567 | all of which are called before Emacs is actually killed.") | |
1568 | (arg) | |
1569 | Lisp_Object arg; | |
1570 | { | |
1571 | Lisp_Object hook, hook1; | |
1572 | int i; | |
1573 | struct gcpro gcpro1; | |
1574 | ||
1575 | GCPRO1 (arg); | |
1576 | ||
1577 | if (feof (stdin)) | |
1578 | arg = Qt; | |
1579 | ||
2447c626 | 1580 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
1581 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
1582 | ||
f927c5ae JB |
1583 | UNGCPRO; |
1584 | ||
1585 | /* Is it really necessary to do this deassign | |
1586 | when we are going to exit anyway? */ | |
1587 | /* #ifdef VMS | |
1588 | stop_vms_input (); | |
1589 | #endif */ | |
40be253a | 1590 | |
d0068e25 | 1591 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 1592 | |
58545838 KH |
1593 | /* If we have an auto-save list file, |
1594 | kill it because we are exiting Emacs deliberately (not crashing). | |
1595 | Do it after shut_down_emacs, which does an auto-save. */ | |
1596 | if (STRINGP (Vauto_save_list_file_name)) | |
1597 | unlink (XSTRING (Vauto_save_list_file_name)->data); | |
1598 | ||
55ccc0b3 | 1599 | exit (INTEGERP (arg) ? XINT (arg) |
f927c5ae JB |
1600 | #ifdef VMS |
1601 | : 1 | |
1602 | #else | |
1603 | : 0 | |
1604 | #endif | |
1605 | ); | |
1606 | /* NOTREACHED */ | |
1607 | } | |
40be253a JB |
1608 | |
1609 | ||
1610 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
1611 | buffers, kill any child processes, clean up the terminal modes (if | |
1612 | we're in the foreground), and other stuff like that. Don't perform | |
1613 | any redisplay; this may be called when Emacs is shutting down in | |
1614 | the background, or after its X connection has died. | |
1615 | ||
1616 | If SIG is a signal number, print a message for it. | |
1617 | ||
1618 | This is called by fatal signal handlers, X protocol error handlers, | |
1619 | and Fkill_emacs. */ | |
f7ab4e3d | 1620 | |
40be253a | 1621 | void |
f7ab4e3d | 1622 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 1623 | int sig, no_x; |
f7ab4e3d | 1624 | Lisp_Object stuff; |
40be253a | 1625 | { |
829d872b RS |
1626 | /* Prevent running of hooks from now on. */ |
1627 | Vrun_hooks = Qnil; | |
1628 | ||
40be253a JB |
1629 | /* If we are controlling the terminal, reset terminal modes */ |
1630 | #ifdef EMACS_HAVE_TTY_PGRP | |
1631 | { | |
d04d81d2 RS |
1632 | int pgrp = EMACS_GETPGRP (0); |
1633 | ||
40be253a JB |
1634 | int tpgrp; |
1635 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 1636 | && tpgrp == pgrp) |
40be253a JB |
1637 | { |
1638 | fflush (stdout); | |
1639 | reset_sys_modes (); | |
1640 | if (sig && sig != SIGTERM) | |
1641 | fprintf (stderr, "Fatal error (%d).", sig); | |
1642 | } | |
1643 | } | |
1644 | #else | |
1645 | fflush (stdout); | |
1646 | reset_sys_modes (); | |
1647 | #endif | |
1648 | ||
f7ab4e3d RS |
1649 | stuff_buffered_input (stuff); |
1650 | ||
40be253a JB |
1651 | kill_buffer_processes (Qnil); |
1652 | Fdo_auto_save (Qt, Qnil); | |
1653 | ||
1654 | #ifdef CLASH_DETECTION | |
1655 | unlock_all_files (); | |
1656 | #endif | |
1657 | ||
1658 | #ifdef VMS | |
1659 | kill_vms_processes (); | |
1660 | #endif | |
1661 | ||
5e7f8733 | 1662 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
41423a80 | 1663 | #ifdef HAVE_X_WINDOWS |
f7511647 RS |
1664 | /* It's not safe to call intern here. Maybe we are crashing. */ |
1665 | if (!noninteractive && SYMBOLP (Vwindow_system) | |
1666 | && XSYMBOL (Vwindow_system)->name->size == 1 | |
1667 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' | |
1668 | && ! no_x) | |
41423a80 RS |
1669 | Fx_close_current_connection (); |
1670 | #endif /* HAVE_X_WINDOWS */ | |
5e7f8733 | 1671 | #endif |
41423a80 | 1672 | |
40be253a JB |
1673 | #ifdef SIGIO |
1674 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
1675 | and cause a SIGHUP because the input descriptor is already closed. */ | |
1676 | unrequest_sigio (); | |
1677 | signal (SIGIO, SIG_IGN); | |
1678 | #endif | |
41f339d4 RS |
1679 | |
1680 | #ifdef WINDOWSNT | |
1681 | term_ntproc (); | |
1682 | #endif | |
d546e578 EZ |
1683 | |
1684 | #ifdef MSDOS | |
1685 | dos_cleanup (); | |
1686 | #endif | |
40be253a JB |
1687 | } |
1688 | ||
1689 | ||
f927c5ae JB |
1690 | \f |
1691 | #ifndef CANNOT_DUMP | |
f927c5ae JB |
1692 | |
1693 | #ifdef HAVE_SHM | |
1694 | ||
1695 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
1696 | "Dump current state of Emacs into data file FILENAME.\n\ | |
1697 | This function exists on systems that use HAVE_SHM.") | |
c9aae259 EN |
1698 | (filename) |
1699 | Lisp_Object filename; | |
f927c5ae | 1700 | { |
55697f5b | 1701 | extern char my_edata[]; |
f927c5ae | 1702 | Lisp_Object tem; |
f927c5ae | 1703 | |
c9aae259 EN |
1704 | CHECK_STRING (filename, 0); |
1705 | filename = Fexpand_file_name (filename, Qnil); | |
f927c5ae JB |
1706 | |
1707 | tem = Vpurify_flag; | |
1708 | Vpurify_flag = Qnil; | |
1709 | ||
1710 | fflush (stdout); | |
1711 | /* Tell malloc where start of impure now is */ | |
1712 | /* Also arrange for warnings when nearly out of space. */ | |
1713 | #ifndef SYSTEM_MALLOC | |
1090a161 | 1714 | memory_warnings (my_edata, malloc_warning); |
f927c5ae | 1715 | #endif |
c9aae259 | 1716 | map_out_data (XSTRING (filename)->data); |
f927c5ae JB |
1717 | |
1718 | Vpurify_flag = tem; | |
1719 | ||
1720 | return Qnil; | |
1721 | } | |
1722 | ||
1723 | #else /* not HAVE_SHM */ | |
1724 | ||
1725 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
1726 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
1727 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
1728 | This is used in the file `loadup.el' when building Emacs.\n\ | |
1729 | \n\ | |
87a98b1a | 1730 | You must run Emacs in batch mode in order to dump it.") |
c9aae259 EN |
1731 | (filename, symfile) |
1732 | Lisp_Object filename, symfile; | |
f927c5ae | 1733 | { |
55697f5b | 1734 | extern char my_edata[]; |
f927c5ae | 1735 | Lisp_Object tem; |
1b7ddf4f RS |
1736 | Lisp_Object symbol; |
1737 | int count = specpdl_ptr - specpdl; | |
f927c5ae | 1738 | |
87a98b1a RS |
1739 | if (! noninteractive) |
1740 | error ("Dumping Emacs works only in batch mode"); | |
1741 | ||
1b7ddf4f RS |
1742 | /* Bind `command-line-processed' to nil before dumping, |
1743 | so that the dumped Emacs will process its command line | |
1744 | and set up to work with X windows if appropriate. */ | |
1745 | symbol = intern ("command-line-process"); | |
1746 | specbind (symbol, Qnil); | |
1747 | ||
c9aae259 EN |
1748 | CHECK_STRING (filename, 0); |
1749 | filename = Fexpand_file_name (filename, Qnil); | |
1750 | if (!NILP (symfile)) | |
f927c5ae | 1751 | { |
c9aae259 EN |
1752 | CHECK_STRING (symfile, 0); |
1753 | if (XSTRING (symfile)->size) | |
1754 | symfile = Fexpand_file_name (symfile, Qnil); | |
f927c5ae JB |
1755 | } |
1756 | ||
1757 | tem = Vpurify_flag; | |
1758 | Vpurify_flag = Qnil; | |
1759 | ||
0269dedb RS |
1760 | #ifdef HAVE_TZSET |
1761 | set_time_zone_rule (dump_tz); | |
1762 | #ifndef LOCALTIME_CACHE | |
1763 | /* Force a tz reload, since set_time_zone_rule doesn't. */ | |
1764 | tzset (); | |
1765 | #endif | |
1766 | #endif | |
1767 | ||
f927c5ae JB |
1768 | fflush (stdout); |
1769 | #ifdef VMS | |
c9aae259 | 1770 | mapout_data (XSTRING (filename)->data); |
f927c5ae JB |
1771 | #else |
1772 | /* Tell malloc where start of impure now is */ | |
1773 | /* Also arrange for warnings when nearly out of space. */ | |
1774 | #ifndef SYSTEM_MALLOC | |
cc5f52cb RS |
1775 | #ifndef WINDOWSNT |
1776 | /* On Windows, this was done before dumping, and that once suffices. | |
1777 | Meanwhile, my_edata is not valid on Windows. */ | |
cb37cf78 | 1778 | memory_warnings (my_edata, malloc_warning); |
cc5f52cb | 1779 | #endif /* not WINDOWSNT */ |
15aaf1b5 RS |
1780 | #endif |
1781 | #ifdef DOUG_LEA_MALLOC | |
1782 | malloc_state_ptr = malloc_get_state (); | |
f927c5ae | 1783 | #endif |
c9aae259 EN |
1784 | unexec (XSTRING (filename)->data, |
1785 | !NILP (symfile) ? XSTRING (symfile)->data : 0, my_edata, 0, 0); | |
15aaf1b5 RS |
1786 | #ifdef DOUG_LEA_MALLOC |
1787 | free (malloc_state_ptr); | |
1788 | #endif | |
f927c5ae JB |
1789 | #endif /* not VMS */ |
1790 | ||
1791 | Vpurify_flag = tem; | |
1792 | ||
1b7ddf4f | 1793 | return unbind_to (count, Qnil); |
f927c5ae JB |
1794 | } |
1795 | ||
1796 | #endif /* not HAVE_SHM */ | |
1797 | ||
1798 | #endif /* not CANNOT_DUMP */ | |
1799 | \f | |
4b163808 | 1800 | #ifndef SEPCHAR |
f927c5ae JB |
1801 | #define SEPCHAR ':' |
1802 | #endif | |
1803 | ||
1804 | Lisp_Object | |
1805 | decode_env_path (evarname, defalt) | |
1806 | char *evarname, *defalt; | |
1807 | { | |
1808 | register char *path, *p; | |
213d0b1f | 1809 | Lisp_Object lpath, element, tem; |
f927c5ae | 1810 | |
2447c626 JB |
1811 | /* It's okay to use getenv here, because this function is only used |
1812 | to initialize variables when Emacs starts up, and isn't called | |
1813 | after that. */ | |
e065a56e JB |
1814 | if (evarname != 0) |
1815 | path = (char *) getenv (evarname); | |
1816 | else | |
1817 | path = 0; | |
f927c5ae JB |
1818 | if (!path) |
1819 | path = defalt; | |
6a30e6d6 RS |
1820 | #ifdef DOS_NT |
1821 | /* Ensure values from the environment use the proper directory separator. */ | |
1822 | if (path) | |
1823 | { | |
1824 | p = alloca (strlen (path) + 1); | |
1825 | strcpy (p, path); | |
1826 | path = p; | |
1827 | ||
1828 | if ('/' == DIRECTORY_SEP) | |
1829 | dostounix_filename (path); | |
1830 | else | |
1831 | unixtodos_filename (path); | |
1832 | } | |
1833 | #endif | |
f927c5ae JB |
1834 | lpath = Qnil; |
1835 | while (1) | |
1836 | { | |
1837 | p = index (path, SEPCHAR); | |
1838 | if (!p) p = path + strlen (path); | |
213d0b1f RS |
1839 | element = (p - path ? make_string (path, p - path) |
1840 | : build_string (".")); | |
1841 | ||
1842 | /* Add /: to the front of the name | |
1843 | if it would otherwise be treated as magic. */ | |
1844 | tem = Ffind_file_name_handler (element, Qt); | |
1845 | if (! NILP (tem)) | |
1846 | element = concat2 (build_string ("/:"), element); | |
1847 | ||
1848 | lpath = Fcons (element, lpath); | |
f927c5ae JB |
1849 | if (*p) |
1850 | path = p + 1; | |
1851 | else | |
1852 | break; | |
1853 | } | |
1854 | return Fnreverse (lpath); | |
1855 | } | |
1856 | ||
dfcf069d | 1857 | void |
f927c5ae JB |
1858 | syms_of_emacs () |
1859 | { | |
213d0b1f RS |
1860 | Qfile_name_handler_alist = intern ("file-name-handler-alist"); |
1861 | staticpro (&Qfile_name_handler_alist); | |
1862 | ||
5bda49c6 RS |
1863 | Qusr1_signal = intern ("usr1-signal"); |
1864 | staticpro (&Qusr1_signal); | |
1865 | Qusr2_signal = intern ("usr2-signal"); | |
1866 | staticpro (&Qusr2_signal); | |
1867 | ||
83591e66 | 1868 | #ifndef CANNOT_DUMP |
f927c5ae JB |
1869 | #ifdef HAVE_SHM |
1870 | defsubr (&Sdump_emacs_data); | |
1871 | #else | |
1872 | defsubr (&Sdump_emacs); | |
83591e66 | 1873 | #endif |
f927c5ae JB |
1874 | #endif |
1875 | ||
1876 | defsubr (&Skill_emacs); | |
1877 | ||
59653951 | 1878 | defsubr (&Sinvocation_name); |
ace40a69 | 1879 | defsubr (&Sinvocation_directory); |
59653951 | 1880 | |
f927c5ae JB |
1881 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
1882 | "Args passed by shell to Emacs, as a list of strings."); | |
1883 | ||
1884 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
1885 | "Value is symbol indicating type of operating system you are using."); | |
1886 | Vsystem_type = intern (SYSTEM_TYPE); | |
1887 | ||
271c7b7c RS |
1888 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
1889 | "Value is string indicating configuration Emacs was built for."); | |
f7511647 | 1890 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
271c7b7c | 1891 | |
f0fc0b1a KH |
1892 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
1893 | "String containing the configuration options Emacs was built with."); | |
1894 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); | |
1895 | ||
f927c5ae JB |
1896 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
1897 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 1898 | |
e5d77022 | 1899 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
1900 | "Hook to be run whenever kill-emacs is called.\n\ |
1901 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
1902 | in other similar situations), functions placed on this hook should not\n\ | |
9f232a5d RS |
1903 | expect to be able to interact with the user. To ask for confirmation,\n\ |
1904 | see `kill-emacs-query-functions' instead."); | |
edc8ae07 | 1905 | Vkill_emacs_hook = Qnil; |
3005da00 | 1906 | |
7317d9e8 RS |
1907 | #ifdef SIGUSR1 |
1908 | DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook, | |
3e75bb9e | 1909 | "Hook to be run whenever emacs receives a USR1 signal"); |
7317d9e8 RS |
1910 | Vsignal_USR1_hook = Qnil; |
1911 | #ifdef SIGUSR2 | |
1912 | DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook, | |
3e75bb9e | 1913 | "Hook to be run whenever emacs receives a USR2 signal"); |
7317d9e8 RS |
1914 | Vsignal_USR2_hook = Qnil; |
1915 | #endif | |
1916 | #endif | |
1917 | ||
1918 | ||
3005da00 RS |
1919 | DEFVAR_INT ("emacs-priority", &emacs_priority, |
1920 | "Priority for Emacs to run at.\n\ | |
1921 | This value is effective only if set before Emacs is dumped,\n\ | |
1922 | and only if the Emacs executable is installed with setuid to permit\n\ | |
621ecf99 | 1923 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
a422068f | 1924 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
e7a9e1c3 RS |
1925 | before you compile Emacs, to enable the code for this feature."); |
1926 | emacs_priority = 0; | |
074a066b GV |
1927 | |
1928 | DEFVAR_LISP ("path-separator", &Vpath_separator, | |
1929 | "The directory separator in search paths, as a string."); | |
1930 | { | |
1931 | char c = SEPCHAR; | |
1932 | Vpath_separator = make_string (&c, 1); | |
1933 | } | |
59653951 | 1934 | |
f67de86f RS |
1935 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
1936 | "The program name that was used to run Emacs.\n\ | |
1937 | Any directory names are omitted."); | |
1938 | ||
1939 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, | |
1940 | "The directory in which the Emacs executable was found, to run it.\n\ | |
1941 | The value is nil if that directory's name is not known."); | |
1942 | ||
1943 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, | |
1944 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ | |
1945 | This is non-nil when we can't find those directories in their standard\n\ | |
1946 | installed locations, but we can find them\n\ | |
1947 | near where the Emacs executable was found."); | |
07f4d123 | 1948 | Vinstallation_directory = Qnil; |
f927c5ae | 1949 | } |