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 (); | |
7c9cd446 AS |
106 | /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while |
107 | dumping. Used to work around a bug in glibc's malloc. */ | |
108 | int malloc_using_checking; | |
15aaf1b5 RS |
109 | #endif |
110 | ||
271c7b7c | 111 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 112 | Lisp_Object Vsystem_type; |
271c7b7c RS |
113 | |
114 | /* Variable whose value is string giving configuration built for. */ | |
115 | Lisp_Object Vsystem_configuration; | |
f0fc0b1a KH |
116 | |
117 | /* Variable whose value is string giving configuration options, | |
118 | for use when reporting bugs. */ | |
119 | Lisp_Object Vsystem_configuration_options; | |
120 | ||
213d0b1f RS |
121 | Lisp_Object Qfile_name_handler_alist; |
122 | ||
f927c5ae JB |
123 | /* If non-zero, emacs should not attempt to use an window-specific code, |
124 | but instead should use the virtual terminal under which it was started */ | |
125 | int inhibit_window_system; | |
126 | ||
5aa7f46a JB |
127 | /* If nonzero, set Emacs to run at this priority. This is also used |
128 | in child_setup and sys_suspend to make sure subshells run at normal | |
129 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
130 | int emacs_priority; |
131 | ||
7074fde6 FP |
132 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
133 | data on the first attempt to change it inside asynchronous code. */ | |
134 | int running_asynch_code; | |
135 | ||
647cec74 | 136 | #ifdef BSD_PGRPS |
9ae8f997 JB |
137 | /* See sysdep.c. */ |
138 | extern int inherited_pgroup; | |
139 | #endif | |
140 | ||
f927c5ae JB |
141 | #ifdef HAVE_X_WINDOWS |
142 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
143 | int display_arg; | |
144 | #endif | |
145 | ||
146 | /* An address near the bottom of the stack. | |
147 | Tells GC how to save a copy of the stack. */ | |
148 | char *stack_bottom; | |
149 | ||
8ba50e1a | 150 | #ifdef HAVE_WINDOW_SYSTEM |
f927c5ae | 151 | extern Lisp_Object Vwindow_system; |
8ba50e1a | 152 | #endif /* HAVE_WINDOW_SYSTEM */ |
f927c5ae | 153 | |
1090a161 RS |
154 | extern Lisp_Object Vauto_save_list_file_name; |
155 | ||
f927c5ae JB |
156 | #ifdef USG_SHARED_LIBRARIES |
157 | /* If nonzero, this is the place to put the end of the writable segment | |
158 | at startup. */ | |
159 | ||
160 | unsigned int bss_end = 0; | |
161 | #endif | |
162 | ||
163 | /* Nonzero means running Emacs without interactive terminal. */ | |
164 | ||
165 | int noninteractive; | |
166 | ||
167 | /* Value of Lisp variable `noninteractive'. | |
168 | Normally same as C variable `noninteractive' | |
169 | but nothing terrible happens if user sets this one. */ | |
170 | ||
171 | int noninteractive1; | |
e29f86e4 RS |
172 | |
173 | /* Save argv and argc. */ | |
174 | char **initial_argv; | |
175 | int initial_argc; | |
081bef73 RS |
176 | |
177 | static void sort_args (); | |
dfcf069d | 178 | void syms_of_emacs (); |
f927c5ae JB |
179 | \f |
180 | /* Signal code for the fatal signal that was received */ | |
181 | int fatal_error_code; | |
182 | ||
183 | /* Nonzero if handling a fatal error already */ | |
184 | int fatal_error_in_progress; | |
185 | ||
7317d9e8 | 186 | #ifdef SIGUSR1 |
7317d9e8 RS |
187 | SIGTYPE |
188 | handle_USR1_signal (sig) | |
189 | int sig; | |
190 | { | |
5bda49c6 RS |
191 | struct input_event buf; |
192 | ||
e2fa15ff AS |
193 | buf.kind = user_signal; |
194 | buf.code = 0; | |
5bda49c6 RS |
195 | buf.frame_or_window = Fselected_frame (); |
196 | buf.modifiers = 0; | |
197 | buf.timestamp = 0; | |
198 | ||
199 | kbd_buffer_store_event (&buf); | |
7317d9e8 | 200 | } |
5bda49c6 | 201 | #endif /* SIGUSR1 */ |
fcf01ad3 | 202 | |
7317d9e8 | 203 | #ifdef SIGUSR2 |
7317d9e8 RS |
204 | SIGTYPE |
205 | handle_USR2_signal (sig) | |
206 | int sig; | |
207 | { | |
5bda49c6 RS |
208 | struct input_event buf; |
209 | ||
e2fa15ff AS |
210 | buf.kind = user_signal; |
211 | buf.code = 1; | |
5bda49c6 RS |
212 | buf.frame_or_window = Fselected_frame (); |
213 | buf.modifiers = 0; | |
214 | buf.timestamp = 0; | |
215 | ||
216 | kbd_buffer_store_event (&buf); | |
7317d9e8 | 217 | } |
5bda49c6 | 218 | #endif /* SIGUSR2 */ |
7317d9e8 | 219 | |
f927c5ae | 220 | /* Handle bus errors, illegal instruction, etc. */ |
2447c626 | 221 | SIGTYPE |
f927c5ae JB |
222 | fatal_error_signal (sig) |
223 | int sig; | |
224 | { | |
f927c5ae JB |
225 | fatal_error_code = sig; |
226 | signal (sig, SIG_DFL); | |
227 | ||
061b7f94 RS |
228 | TOTALLY_UNBLOCK_INPUT; |
229 | ||
f927c5ae | 230 | /* If fatal error occurs in code below, avoid infinite recursion. */ |
8090eb09 JB |
231 | if (! fatal_error_in_progress) |
232 | { | |
233 | fatal_error_in_progress = 1; | |
f927c5ae | 234 | |
f7ab4e3d | 235 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 236 | } |
f927c5ae JB |
237 | |
238 | #ifdef VMS | |
f927c5ae JB |
239 | LIB$STOP (SS$_ABORT); |
240 | #else | |
8090eb09 JB |
241 | /* Signal the same code; this time it will really be fatal. |
242 | Remember that since we're in a signal handler, the signal we're | |
243 | going to send is probably blocked, so we have to unblock it if we | |
244 | want to really receive it. */ | |
29b89fe0 | 245 | #ifndef MSDOS |
a90538cb | 246 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 247 | #endif |
f927c5ae JB |
248 | kill (getpid (), fatal_error_code); |
249 | #endif /* not VMS */ | |
250 | } | |
271c7b7c RS |
251 | |
252 | #ifdef SIGDANGER | |
253 | ||
16c323ee | 254 | /* Handler for SIGDANGER. */ |
271c7b7c RS |
255 | SIGTYPE |
256 | memory_warning_signal (sig) | |
257 | int sig; | |
258 | { | |
259 | signal (sig, memory_warning_signal); | |
260 | ||
261 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
55796183 RS |
262 | |
263 | /* It might be unsafe to call do_auto_save now. */ | |
264 | force_auto_save_soon (); | |
271c7b7c RS |
265 | } |
266 | #endif | |
fcf01ad3 RS |
267 | |
268 | /* We define abort, rather than using it from the library, | |
c9fe9cce KH |
269 | so that GDB can return from a breakpoint here. |
270 | MSDOS has its own definition on msdos.c */ | |
fcf01ad3 | 271 | |
37e2fdd2 | 272 | #if ! defined (DOS_NT) && ! defined (NO_ABORT) |
fcf01ad3 RS |
273 | void |
274 | abort () | |
275 | { | |
276 | kill (getpid (), SIGABRT); | |
37e2fdd2 RS |
277 | /* This shouldn't be executed, but it prevents a warning. */ |
278 | exit (1); | |
fcf01ad3 | 279 | } |
c9fe9cce | 280 | #endif |
fcf01ad3 | 281 | |
f927c5ae JB |
282 | \f |
283 | /* Code for dealing with Lisp access to the Unix command line */ | |
284 | ||
dfcf069d | 285 | static void |
f927c5ae JB |
286 | init_cmdargs (argc, argv, skip_args) |
287 | int argc; | |
288 | char **argv; | |
289 | int skip_args; | |
290 | { | |
291 | register int i; | |
213d0b1f RS |
292 | Lisp_Object name, dir, tem; |
293 | int count = specpdl_ptr - specpdl; | |
294 | Lisp_Object raw_name; | |
f927c5ae | 295 | |
e29f86e4 RS |
296 | initial_argv = argv; |
297 | initial_argc = argc; | |
298 | ||
213d0b1f RS |
299 | raw_name = build_string (argv[0]); |
300 | ||
301 | /* Add /: to the front of the name | |
302 | if it would otherwise be treated as magic. */ | |
303 | tem = Ffind_file_name_handler (raw_name, Qt); | |
304 | if (! NILP (tem)) | |
305 | raw_name = concat2 (build_string ("/:"), raw_name); | |
306 | ||
307 | Vinvocation_name = Ffile_name_nondirectory (raw_name); | |
308 | Vinvocation_directory = Ffile_name_directory (raw_name); | |
309 | ||
ace40a69 RS |
310 | /* If we got no directory in argv[0], search PATH to find where |
311 | Emacs actually came from. */ | |
312 | if (NILP (Vinvocation_directory)) | |
313 | { | |
314 | Lisp_Object found; | |
315 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 316 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 317 | if (yes == 1) |
213d0b1f RS |
318 | { |
319 | /* Add /: to the front of the name | |
320 | if it would otherwise be treated as magic. */ | |
321 | tem = Ffind_file_name_handler (found, Qt); | |
322 | if (! NILP (tem)) | |
323 | found = concat2 (build_string ("/:"), found); | |
324 | Vinvocation_directory = Ffile_name_directory (found); | |
325 | } | |
ace40a69 | 326 | } |
59653951 | 327 | |
4133b300 RS |
328 | if (!NILP (Vinvocation_directory) |
329 | && NILP (Ffile_name_absolute_p (Vinvocation_directory))) | |
213d0b1f RS |
330 | /* Emacs was started with relative path, like ./emacs. |
331 | Make it absolute. */ | |
4133b300 RS |
332 | Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); |
333 | ||
07f4d123 RS |
334 | Vinstallation_directory = Qnil; |
335 | ||
336 | if (!NILP (Vinvocation_directory)) | |
337 | { | |
338 | dir = Vinvocation_directory; | |
339 | name = Fexpand_file_name (Vinvocation_name, dir); | |
340 | while (1) | |
341 | { | |
f5ab9736 | 342 | Lisp_Object tem, lib_src_exists; |
07f4d123 RS |
343 | Lisp_Object etc_exists, info_exists; |
344 | ||
f5ab9736 RS |
345 | /* See if dir contains subdirs for use by Emacs. |
346 | Check for the ones that would exist in a build directory, | |
347 | not including lisp and info. */ | |
348 | tem = Fexpand_file_name (build_string ("lib-src"), dir); | |
349 | lib_src_exists = Ffile_exists_p (tem); | |
de004cc6 | 350 | |
70344b34 | 351 | #ifdef MSDOS |
de004cc6 RS |
352 | /* MSDOS installations frequently remove lib-src, but we still |
353 | must set installation-directory, or else info won't find | |
354 | its files (it uses the value of installation-directory). */ | |
355 | tem = Fexpand_file_name (build_string ("info"), dir); | |
356 | info_exists = Ffile_exists_p (tem); | |
70344b34 EZ |
357 | #else |
358 | info_exists = Qnil; | |
359 | #endif | |
de004cc6 RS |
360 | |
361 | if (!NILP (lib_src_exists) || !NILP (info_exists)) | |
07f4d123 | 362 | { |
f5ab9736 RS |
363 | tem = Fexpand_file_name (build_string ("etc"), dir); |
364 | etc_exists = Ffile_exists_p (tem); | |
365 | if (!NILP (etc_exists)) | |
07f4d123 | 366 | { |
f5ab9736 RS |
367 | Vinstallation_directory |
368 | = Ffile_name_as_directory (dir); | |
369 | break; | |
07f4d123 RS |
370 | } |
371 | } | |
372 | ||
373 | /* See if dir's parent contains those subdirs. */ | |
f5ab9736 RS |
374 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
375 | lib_src_exists = Ffile_exists_p (tem); | |
de004cc6 | 376 | |
70344b34 EZ |
377 | |
378 | #ifdef MSDOS | |
379 | /* See the MSDOS commentary above. */ | |
de004cc6 RS |
380 | tem = Fexpand_file_name (build_string ("../info"), dir); |
381 | info_exists = Ffile_exists_p (tem); | |
70344b34 EZ |
382 | #else |
383 | info_exists = Qnil; | |
384 | #endif | |
de004cc6 RS |
385 | |
386 | if (!NILP (lib_src_exists) || !NILP (info_exists)) | |
07f4d123 | 387 | { |
f5ab9736 RS |
388 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
389 | etc_exists = Ffile_exists_p (tem); | |
390 | if (!NILP (etc_exists)) | |
07f4d123 | 391 | { |
f5ab9736 RS |
392 | tem = Fexpand_file_name (build_string (".."), dir); |
393 | Vinstallation_directory | |
394 | = Ffile_name_as_directory (tem); | |
395 | break; | |
07f4d123 RS |
396 | } |
397 | } | |
398 | ||
399 | /* If the Emacs executable is actually a link, | |
400 | next try the dir that the link points into. */ | |
401 | tem = Ffile_symlink_p (name); | |
402 | if (!NILP (tem)) | |
403 | { | |
260ec24d | 404 | name = Fexpand_file_name (tem, dir); |
07f4d123 RS |
405 | dir = Ffile_name_directory (name); |
406 | } | |
407 | else | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
f927c5ae JB |
412 | Vcommand_line_args = Qnil; |
413 | ||
414 | for (i = argc - 1; i >= 0; i--) | |
415 | { | |
416 | if (i == 0 || i > skip_args) | |
417 | Vcommand_line_args | |
418 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
419 | } | |
213d0b1f RS |
420 | |
421 | unbind_to (count, Qnil); | |
f927c5ae | 422 | } |
59653951 JB |
423 | |
424 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
425 | "Return the program name that was used to run Emacs.\n\ | |
426 | Any directory names are omitted.") | |
427 | () | |
428 | { | |
429 | return Fcopy_sequence (Vinvocation_name); | |
430 | } | |
431 | ||
ace40a69 RS |
432 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
433 | 0, 0, 0, | |
434 | "Return the directory name in which the Emacs executable was located") | |
435 | () | |
436 | { | |
437 | return Fcopy_sequence (Vinvocation_directory); | |
438 | } | |
439 | ||
f927c5ae JB |
440 | \f |
441 | #ifdef VMS | |
442 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 443 | #ifdef SHARABLE_LIB_BUG |
f927c5ae | 444 | extern noshare char **environ; |
34035df3 | 445 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
446 | #endif /* LINK_CRTL_SHARE */ |
447 | #endif /* VMS */ | |
448 | ||
0269dedb RS |
449 | #ifdef HAVE_TZSET |
450 | /* A valid but unlikely value for the TZ environment value. | |
451 | It is OK (though a bit slower) if the user actually chooses this value. */ | |
452 | static char dump_tz[] = "UtC0"; | |
453 | #endif | |
454 | ||
a90538cb | 455 | #ifndef ORDINARY_LINK |
efd241cc RS |
456 | /* We don't include crtbegin.o and crtend.o in the link, |
457 | so these functions and variables might be missed. | |
458 | Provide dummy definitions to avoid error. | |
459 | (We don't have any real constructors or destructors.) */ | |
460 | #ifdef __GNUC__ | |
46e65b73 | 461 | #ifndef GCC_CTORS_IN_LIBC |
dfcf069d | 462 | void __do_global_ctors () |
efd241cc | 463 | {} |
dfcf069d | 464 | void __do_global_ctors_aux () |
c83a7064 | 465 | {} |
dfcf069d | 466 | void __do_global_dtors () |
33143604 | 467 | {} |
64c1864a RS |
468 | /* Linux has a bug in its library; avoid an error. */ |
469 | #ifndef LINUX | |
c83a7064 | 470 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 471 | #endif |
c83a7064 | 472 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
46e65b73 | 473 | #endif /* GCC_CTORS_IN_LIBC */ |
dfcf069d | 474 | void __main () |
efd241cc | 475 | {} |
efd241cc | 476 | #endif /* __GNUC__ */ |
a90538cb | 477 | #endif /* ORDINARY_LINK */ |
efd241cc | 478 | |
e2925360 KH |
479 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
480 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null | |
481 | (the argument is supposed to have a value) store in *VALPTR either | |
482 | the next argument or the portion of this one after the equal sign. | |
483 | ARGV is read starting at position *SKIPPTR; this index is advanced | |
484 | by the number of arguments used. | |
485 | ||
486 | Too bad we can't just use getopt for all of this, but we don't have | |
487 | enough information to do it right. */ | |
081bef73 | 488 | |
e2925360 | 489 | static int |
df6530f8 | 490 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
e2925360 | 491 | char **argv; |
df6530f8 | 492 | int argc; |
e2925360 KH |
493 | char *sstr; |
494 | char *lstr; | |
495 | int minlen; | |
496 | char **valptr; | |
497 | int *skipptr; | |
498 | { | |
499 | char *p; | |
500 | int arglen; | |
df6530f8 RS |
501 | char *arg; |
502 | ||
503 | /* Don't access argv[argc]; give up in advance. */ | |
504 | if (argc <= *skipptr + 1) | |
505 | return 0; | |
506 | ||
507 | arg = argv[*skipptr+1]; | |
e2925360 KH |
508 | if (arg == NULL) |
509 | return 0; | |
510 | if (strcmp (arg, sstr) == 0) | |
511 | { | |
512 | if (valptr != NULL) | |
513 | { | |
514 | *valptr = argv[*skipptr+2]; | |
515 | *skipptr += 2; | |
516 | } | |
517 | else | |
518 | *skipptr += 1; | |
519 | return 1; | |
520 | } | |
521 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL | |
522 | ? p - arg : strlen (arg)); | |
c03e1113 | 523 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
e2925360 KH |
524 | return 0; |
525 | else if (valptr == NULL) | |
526 | { | |
527 | *skipptr += 1; | |
528 | return 1; | |
529 | } | |
530 | else if (p != NULL) | |
531 | { | |
532 | *valptr = p+1; | |
533 | *skipptr += 1; | |
534 | return 1; | |
535 | } | |
536 | else if (argv[*skipptr+2] != NULL) | |
537 | { | |
538 | *valptr = argv[*skipptr+2]; | |
539 | *skipptr += 2; | |
540 | return 1; | |
541 | } | |
542 | else | |
543 | { | |
544 | return 0; | |
545 | } | |
546 | } | |
547 | ||
f927c5ae | 548 | /* ARGSUSED */ |
dfcf069d | 549 | int |
f927c5ae JB |
550 | main (argc, argv, envp) |
551 | int argc; | |
552 | char **argv; | |
553 | char **envp; | |
554 | { | |
555 | char stack_bottom_variable; | |
556 | int skip_args = 0; | |
557 | extern int errno; | |
dfcf069d | 558 | extern int sys_nerr; |
53c58b5d RS |
559 | #ifdef HAVE_SETRLIMIT |
560 | struct rlimit rlim; | |
561 | #endif | |
956e3c7e | 562 | int no_loadup = 0; |
f927c5ae | 563 | |
6000fe37 RS |
564 | #ifdef LINUX_SBRK_BUG |
565 | __sbrk (1); | |
566 | #endif | |
567 | ||
15aaf1b5 RS |
568 | #ifdef DOUG_LEA_MALLOC |
569 | if (initialized) | |
570 | { | |
7c9cd446 AS |
571 | if (!malloc_using_checking) |
572 | /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be | |
573 | ignored if the heap to be restored was constructed without | |
574 | malloc checking. */ | |
575 | unsetenv ("MALLOC_CHECK_"); | |
15aaf1b5 RS |
576 | malloc_set_state (malloc_state_ptr); |
577 | free (malloc_state_ptr); | |
578 | } | |
7c9cd446 AS |
579 | else |
580 | malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL; | |
15aaf1b5 RS |
581 | #endif |
582 | ||
d785cf9e RS |
583 | #ifdef RUN_TIME_REMAP |
584 | if (initialized) | |
585 | run_time_remap (argv[0]); | |
586 | #endif | |
587 | ||
081bef73 | 588 | sort_args (argc, argv); |
956e3c7e RS |
589 | argc = 0; |
590 | while (argv[argc]) argc++; | |
081bef73 | 591 | |
3270ae6e KH |
592 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args) |
593 | /* We don't know the version number unless this is a dumped Emacs. | |
594 | So ignore --version otherwise. */ | |
595 | && initialized) | |
1702afef RS |
596 | { |
597 | Lisp_Object tem; | |
598 | tem = Fsymbol_value (intern ("emacs-version")); | |
599 | if (!STRINGP (tem)) | |
600 | { | |
601 | fprintf (stderr, "Invalid value of `emacs-version'\n"); | |
602 | exit (1); | |
603 | } | |
604 | else | |
605 | { | |
30ce1583 | 606 | printf ("GNU Emacs %s\n", XSTRING (tem)->data); |
7e8e59d0 | 607 | printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n"); |
b455c665 RS |
608 | printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n"); |
609 | printf ("You may redistribute copies of Emacs\n"); | |
610 | printf ("under the terms of the GNU General Public License.\n"); | |
611 | printf ("For more information about these matters, "); | |
94487c4e | 612 | printf ("see the file named COPYING.\n"); |
1702afef RS |
613 | exit (0); |
614 | } | |
615 | } | |
616 | ||
f927c5ae JB |
617 | /* Map in shared memory, if we are using that. */ |
618 | #ifdef HAVE_SHM | |
df6530f8 | 619 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
f927c5ae JB |
620 | { |
621 | map_in_data (0); | |
622 | /* The shared memory was just restored, which clobbered this. */ | |
623 | skip_args = 1; | |
624 | } | |
625 | else | |
626 | { | |
627 | map_in_data (1); | |
628 | /* The shared memory was just restored, which clobbered this. */ | |
629 | skip_args = 0; | |
630 | } | |
631 | #endif | |
632 | ||
19a36ec6 | 633 | #ifdef NeXT |
b9df9faa KH |
634 | { |
635 | extern int malloc_cookie; | |
636 | /* This helps out unexnext.c. */ | |
637 | if (initialized) | |
638 | if (malloc_jumpstart (malloc_cookie) != 0) | |
639 | printf ("malloc jumpstart failed!\n"); | |
640 | } | |
19a36ec6 RS |
641 | #endif /* NeXT */ |
642 | ||
f927c5ae JB |
643 | #ifdef VMS |
644 | /* If -map specified, map the data file in */ | |
e2925360 KH |
645 | { |
646 | char *file; | |
df6530f8 | 647 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
e2925360 KH |
648 | mapin_data (file); |
649 | } | |
f927c5ae JB |
650 | |
651 | #ifdef LINK_CRTL_SHARE | |
34035df3 | 652 | #ifdef SHARABLE_LIB_BUG |
f927c5ae JB |
653 | /* Bletcherous shared libraries! */ |
654 | if (!stdin) | |
655 | stdin = fdopen (0, "r"); | |
656 | if (!stdout) | |
657 | stdout = fdopen (1, "w"); | |
658 | if (!stderr) | |
659 | stderr = fdopen (2, "w"); | |
660 | if (!environ) | |
661 | environ = envp; | |
34035df3 | 662 | #endif /* SHARABLE_LIB_BUG */ |
f927c5ae JB |
663 | #endif /* LINK_CRTL_SHARE */ |
664 | #endif /* VMS */ | |
665 | ||
ea2acec5 | 666 | #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK) |
6c2935e9 RS |
667 | /* Extend the stack space available. |
668 | Don't do that if dumping, since some systems (e.g. DJGPP) | |
669 | might define a smaller stack limit at that time. */ | |
670 | if (1 | |
671 | #ifndef CANNOT_DUMP | |
672 | && (!noninteractive || initialized) | |
673 | #endif | |
674 | && !getrlimit (RLIMIT_STACK, &rlim)) | |
53c58b5d | 675 | { |
509a8fcd | 676 | long newlim; |
6c2935e9 | 677 | extern int re_max_failures; |
03effc23 KH |
678 | /* Approximate the amount regex.c needs per unit of re_max_failures. */ |
679 | int ratio = 20 * sizeof (char *); | |
680 | /* Then add 33% to cover the size of the smaller stacks that regex.c | |
681 | successively allocates and discards, on its way to the maximum. */ | |
682 | ratio += ratio / 3; | |
683 | /* Add in some extra to cover | |
684 | what we're likely to use for other reasons. */ | |
685 | newlim = re_max_failures * ratio + 200000; | |
d0381a7f RS |
686 | #ifdef __NetBSD__ |
687 | /* NetBSD (at least NetBSD 1.2G and former) has a bug in its | |
688 | stack allocation routine for new process that the allocation | |
689 | fails if stack limit is not on page boundary. So, round up the | |
690 | new limit to page boundary. */ | |
691 | newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize(); | |
692 | #endif | |
509a8fcd | 693 | if (newlim > rlim.rlim_max) |
6c2935e9 RS |
694 | { |
695 | newlim = rlim.rlim_max; | |
03effc23 KH |
696 | /* Don't let regex.c overflow the stack we have. */ |
697 | re_max_failures = (newlim - 200000) / ratio; | |
6c2935e9 | 698 | } |
509a8fcd RS |
699 | if (rlim.rlim_cur < newlim) |
700 | rlim.rlim_cur = newlim; | |
701 | ||
53c58b5d RS |
702 | setrlimit (RLIMIT_STACK, &rlim); |
703 | } | |
ea2acec5 | 704 | #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */ |
53c58b5d | 705 | |
f927c5ae JB |
706 | /* Record (approximately) where the stack begins. */ |
707 | stack_bottom = &stack_bottom_variable; | |
708 | ||
f927c5ae JB |
709 | #ifdef USG_SHARED_LIBRARIES |
710 | if (bss_end) | |
1d233b80 | 711 | brk ((void *)bss_end); |
f927c5ae JB |
712 | #endif |
713 | ||
714 | clearerr (stdin); | |
9ae8f997 | 715 | |
f927c5ae | 716 | #ifndef SYSTEM_MALLOC |
bf7f4e90 RS |
717 | /* Arrange to get warning messages as memory fills up. */ |
718 | memory_warnings (0, malloc_warning); | |
9ac0d9e0 | 719 | |
f5a3c8c4 AI |
720 | /* Call malloc at least once, to run the initial __malloc_hook. |
721 | Also call realloc and free for consistency. */ | |
722 | free (realloc (malloc (4), 4)); | |
bf7f4e90 RS |
723 | |
724 | /* Arrange to disable interrupt input inside malloc etc. */ | |
725 | uninterrupt_malloc (); | |
f927c5ae JB |
726 | #endif /* not SYSTEM_MALLOC */ |
727 | ||
29b89fe0 RS |
728 | #ifdef MSDOS |
729 | /* We do all file input/output as binary files. When we need to translate | |
730 | newlines, we do that manually. */ | |
731 | _fmode = O_BINARY; | |
18198bb2 RS |
732 | |
733 | #if __DJGPP__ >= 2 | |
734 | if (!isatty (fileno (stdin))) | |
735 | setmode (fileno (stdin), O_BINARY); | |
736 | if (!isatty (fileno (stdout))) | |
737 | { | |
738 | fflush (stdout); | |
739 | setmode (fileno (stdout), O_BINARY); | |
740 | } | |
741 | #else /* not __DJGPP__ >= 2 */ | |
29b89fe0 RS |
742 | (stdin)->_flag &= ~_IOTEXT; |
743 | (stdout)->_flag &= ~_IOTEXT; | |
744 | (stderr)->_flag &= ~_IOTEXT; | |
18198bb2 | 745 | #endif /* not __DJGPP__ >= 2 */ |
29b89fe0 RS |
746 | #endif /* MSDOS */ |
747 | ||
a422068f | 748 | #ifdef SET_EMACS_PRIORITY |
3005da00 | 749 | if (emacs_priority) |
5aa7f46a | 750 | nice (emacs_priority); |
f927c5ae | 751 | setuid (getuid ()); |
a422068f | 752 | #endif /* SET_EMACS_PRIORITY */ |
f927c5ae | 753 | |
d8b3a65d | 754 | #ifdef EXTRA_INITIALIZE |
a9260219 | 755 | EXTRA_INITIALIZE; |
d8b3a65d RS |
756 | #endif |
757 | ||
f927c5ae JB |
758 | inhibit_window_system = 0; |
759 | ||
4fc0b45b | 760 | /* Handle the -t switch, which specifies filename to use as terminal */ |
956e3c7e RS |
761 | while (1) |
762 | { | |
763 | char *term; | |
764 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) | |
765 | { | |
766 | int result; | |
767 | close (0); | |
768 | close (1); | |
769 | result = open (term, O_RDWR, 2 ); | |
770 | if (result < 0) | |
771 | { | |
772 | char *errstring = strerror (errno); | |
773 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); | |
774 | exit (1); | |
775 | } | |
776 | dup (0); | |
777 | if (! isatty (0)) | |
778 | { | |
779 | fprintf (stderr, "emacs: %s: not a tty\n", term); | |
780 | exit (1); | |
781 | } | |
782 | fprintf (stderr, "Using %s\n", term); | |
8ba50e1a | 783 | #ifdef HAVE_WINDOW_SYSTEM |
956e3c7e | 784 | inhibit_window_system = 1; /* -t => -nw */ |
f927c5ae | 785 | #endif |
956e3c7e RS |
786 | } |
787 | else | |
788 | break; | |
789 | } | |
790 | ||
df6530f8 | 791 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
e2925360 | 792 | inhibit_window_system = 1; |
f927c5ae | 793 | |
e2925360 | 794 | /* Handle the -batch switch, which means don't do interactive display. */ |
f927c5ae | 795 | noninteractive = 0; |
df6530f8 | 796 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
e2925360 KH |
797 | noninteractive = 1; |
798 | ||
799 | /* Handle the --help option, which gives a usage message.. */ | |
df6530f8 | 800 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
f927c5ae | 801 | { |
e2925360 | 802 | printf ("\ |
b519fca5 KH |
803 | Usage: %s [--batch] [-t term] [--terminal term]\n\ |
804 | [-d display] [--display display] [-nw] [--no-windows]\n\ | |
e2925360 | 805 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ |
12411c24 | 806 | [--unibyte] [--multibyte] [--version] [--no-site-file]\n\ |
b519fca5 KH |
807 | [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\ |
808 | [--insert file] [+linenum] file-to-visit [--kill]\n\ | |
e1176af4 | 809 | Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\ |
8a7a3407 | 810 | the Bugs section of the Emacs manual or the file BUGS.\n", argv[0]); |
e2925360 | 811 | exit (0); |
f927c5ae JB |
812 | } |
813 | ||
edb85f59 RS |
814 | if (! noninteractive) |
815 | { | |
816 | #ifdef BSD_PGRPS | |
817 | if (initialized) | |
818 | { | |
819 | inherited_pgroup = EMACS_GETPGRP (0); | |
820 | setpgrp (0, getpid ()); | |
821 | } | |
822 | #else | |
823 | #if defined (USG5) && defined (INTERRUPT_INPUT) | |
824 | setpgrp (); | |
825 | #endif | |
826 | #endif | |
827 | } | |
828 | ||
fb8e9847 JB |
829 | #ifdef POSIX_SIGNALS |
830 | init_signals (); | |
831 | #endif | |
832 | ||
1efa2983 KH |
833 | /* Don't catch SIGHUP if dumping. */ |
834 | if (1 | |
835 | #ifndef CANNOT_DUMP | |
836 | && initialized | |
837 | #endif | |
838 | ) | |
839 | { | |
57e3d22a | 840 | sigblock (sigmask (SIGHUP)); |
1efa2983 KH |
841 | /* In --batch mode, don't catch SIGHUP if already ignored. |
842 | That makes nohup work. */ | |
843 | if (! noninteractive | |
844 | || signal (SIGHUP, SIG_IGN) != SIG_IGN) | |
845 | signal (SIGHUP, fatal_error_signal); | |
57e3d22a | 846 | sigunblock (sigmask (SIGHUP)); |
1efa2983 KH |
847 | } |
848 | ||
f927c5ae JB |
849 | if ( |
850 | #ifndef CANNOT_DUMP | |
851 | ! noninteractive || initialized | |
852 | #else | |
853 | 1 | |
854 | #endif | |
855 | ) | |
856 | { | |
1efa2983 | 857 | /* Don't catch these signals in batch mode if dumping. |
f927c5ae JB |
858 | On some machines, this sets static data that would make |
859 | signal fail to work right when the dumped Emacs is run. */ | |
f927c5ae JB |
860 | signal (SIGQUIT, fatal_error_signal); |
861 | signal (SIGILL, fatal_error_signal); | |
862 | signal (SIGTRAP, fatal_error_signal); | |
7317d9e8 RS |
863 | #ifdef SIGUSR1 |
864 | signal (SIGUSR1, handle_USR1_signal); | |
865 | #ifdef SIGUSR2 | |
866 | signal (SIGUSR2, handle_USR2_signal); | |
867 | #endif | |
868 | #endif | |
99e372cd RS |
869 | #ifdef SIGABRT |
870 | signal (SIGABRT, fatal_error_signal); | |
871 | #endif | |
872 | #ifdef SIGHWE | |
873 | signal (SIGHWE, fatal_error_signal); | |
874 | #endif | |
875 | #ifdef SIGPRE | |
876 | signal (SIGPRE, fatal_error_signal); | |
877 | #endif | |
878 | #ifdef SIGORE | |
879 | signal (SIGORE, fatal_error_signal); | |
880 | #endif | |
881 | #ifdef SIGUME | |
882 | signal (SIGUME, fatal_error_signal); | |
883 | #endif | |
884 | #ifdef SIGDLK | |
885 | signal (SIGDLK, fatal_error_signal); | |
886 | #endif | |
887 | #ifdef SIGCPULIM | |
888 | signal (SIGCPULIM, fatal_error_signal); | |
889 | #endif | |
a90538cb JB |
890 | #ifdef SIGIOT |
891 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 892 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 893 | #endif |
f927c5ae JB |
894 | #ifdef SIGEMT |
895 | signal (SIGEMT, fatal_error_signal); | |
896 | #endif | |
897 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 898 | #ifdef SIGBUS |
f927c5ae | 899 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 900 | #endif |
f927c5ae | 901 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 902 | #ifdef SIGSYS |
f927c5ae | 903 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 904 | #endif |
f927c5ae JB |
905 | signal (SIGTERM, fatal_error_signal); |
906 | #ifdef SIGXCPU | |
907 | signal (SIGXCPU, fatal_error_signal); | |
908 | #endif | |
909 | #ifdef SIGXFSZ | |
910 | signal (SIGXFSZ, fatal_error_signal); | |
911 | #endif /* SIGXFSZ */ | |
912 | ||
271c7b7c RS |
913 | #ifdef SIGDANGER |
914 | /* This just means available memory is getting low. */ | |
915 | signal (SIGDANGER, memory_warning_signal); | |
916 | #endif | |
917 | ||
f927c5ae | 918 | #ifdef AIX |
56e034fa RS |
919 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
920 | signal (SIGXCPU, fatal_error_signal); | |
0aef8561 | 921 | #ifndef _I386 |
f927c5ae | 922 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 923 | #endif |
f927c5ae JB |
924 | signal (SIGGRANT, fatal_error_signal); |
925 | signal (SIGRETRACT, fatal_error_signal); | |
926 | signal (SIGSOUND, fatal_error_signal); | |
927 | signal (SIGMSG, fatal_error_signal); | |
928 | #endif /* AIX */ | |
929 | } | |
930 | ||
931 | noninteractive1 = noninteractive; | |
932 | ||
933 | /* Perform basic initializations (not merely interning symbols) */ | |
934 | ||
935 | if (!initialized) | |
936 | { | |
937 | init_alloc_once (); | |
938 | init_obarray (); | |
939 | init_eval_once (); | |
270ce821 KH |
940 | init_charset_once (); |
941 | init_coding_once (); | |
f927c5ae | 942 | init_syntax_once (); /* Create standard syntax table. */ |
270ce821 | 943 | init_category_once (); /* Create standard category table. */ |
f927c5ae JB |
944 | /* Must be done before init_buffer */ |
945 | init_casetab_once (); | |
946 | init_buffer_once (); /* Create buffer table and some buffers */ | |
947 | init_minibuf_once (); /* Create list of minibuffers */ | |
948 | /* Must precede init_window_once */ | |
949 | init_window_once (); /* Init the window system */ | |
680256a8 | 950 | init_fileio_once (); /* Must precede any path manipulation. */ |
f927c5ae JB |
951 | } |
952 | ||
953 | init_alloc (); | |
f927c5ae | 954 | init_eval (); |
0968d4ee | 955 | init_coding (); |
f927c5ae | 956 | init_data (); |
7074fde6 | 957 | running_asynch_code = 0; |
0e956009 | 958 | |
a08a816a RS |
959 | /* Handle --unibyte and the EMACS_UNIBYTE envvar, |
960 | but not while dumping. */ | |
961 | if ( | |
962 | #ifndef CANNOT_DUMP | |
963 | ! noninteractive || initialized | |
964 | #else | |
965 | 1 | |
966 | #endif | |
967 | ) | |
968 | { | |
969 | int inhibit_unibyte = 0; | |
970 | ||
971 | /* --multibyte overrides EMACS_UNIBYTE. */ | |
972 | if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args) | |
973 | || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)) | |
974 | inhibit_unibyte = 1; | |
975 | ||
976 | /* --unibyte requests that we set up to do everything with single-byte | |
977 | buffers and strings. We need to handle this before calling | |
978 | init_lread, init_editfns and other places that generate Lisp strings | |
979 | from text in the environment. */ | |
c0218e1b DL |
980 | /* Actually this shouldn't be needed as of 20.4 in a generally |
981 | unibyte environment. As handa says, environment values | |
982 | aren't now decoded; also existing buffers are now made | |
983 | unibyte during startup if .emacs sets unibyte. Tested with | |
984 | 8-bit data in environment variables and /etc/passwd, setting | |
985 | unibyte and Latin-1 in .emacs. -- Dave Love */ | |
a08a816a RS |
986 | if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args) |
987 | || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args) | |
988 | || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte)) | |
989 | { | |
990 | Lisp_Object old_log_max; | |
991 | Lisp_Object symbol, tail; | |
992 | ||
993 | symbol = intern ("default-enable-multibyte-characters"); | |
994 | Fset (symbol, Qnil); | |
995 | ||
6524291c KH |
996 | if (initialized) |
997 | { | |
998 | /* Erase pre-dump messages in *Messages* now so no abort. */ | |
999 | old_log_max = Vmessage_log_max; | |
1000 | XSETFASTINT (Vmessage_log_max, 0); | |
1001 | message_dolog ("", 0, 1, 0); | |
1002 | Vmessage_log_max = old_log_max; | |
1003 | } | |
a08a816a | 1004 | |
3e75bb9e | 1005 | for (tail = Vbuffer_alist; CONSP (tail); |
a08a816a RS |
1006 | tail = XCONS (tail)->cdr) |
1007 | { | |
1008 | Lisp_Object buffer; | |
1009 | ||
3e75bb9e | 1010 | buffer = Fcdr (XCONS (tail)->car); |
a08a816a RS |
1011 | /* Verify that all buffers are empty now, as they |
1012 | ought to be. */ | |
1013 | if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer))) | |
1014 | abort (); | |
1015 | /* It is safe to do this crudely in an empty buffer. */ | |
1016 | XBUFFER (buffer)->enable_multibyte_characters = Qnil; | |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
956e3c7e RS |
1021 | no_loadup |
1022 | = !argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args); | |
1023 | ||
1024 | ||
1025 | #ifdef HAVE_X_WINDOWS | |
1026 | /* Stupid kludge to catch command-line display spec. We can't | |
1027 | handle this argument entirely in window system dependent code | |
1028 | because we don't even know which window system dependent code | |
1029 | to run until we've recognized this argument. */ | |
1030 | { | |
1031 | char *displayname = 0; | |
1032 | int i; | |
1033 | int count_before = skip_args; | |
1034 | ||
1035 | /* Skip any number of -d options, but only use the last one. */ | |
1036 | while (1) | |
1037 | { | |
1038 | int count_before_this = skip_args; | |
1039 | ||
1040 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) | |
1041 | display_arg = 1; | |
1042 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) | |
1043 | display_arg = 1; | |
1044 | else | |
1045 | break; | |
1046 | ||
1047 | count_before = count_before_this; | |
1048 | } | |
1049 | ||
1050 | /* If we have the form --display=NAME, | |
1051 | convert it into -d name. | |
1052 | This requires inserting a new element into argv. */ | |
1053 | if (displayname != 0 && skip_args - count_before == 1) | |
1054 | { | |
1055 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); | |
1056 | int j; | |
1057 | ||
1058 | for (j = 0; j < count_before + 1; j++) | |
1059 | new[j] = argv[j]; | |
1060 | new[count_before + 1] = "-d"; | |
1061 | new[count_before + 2] = displayname; | |
1062 | for (j = count_before + 2; j <argc; j++) | |
1063 | new[j + 1] = argv[j]; | |
1064 | argv = new; | |
1065 | argc++; | |
1066 | } | |
1067 | /* Change --display to -d, when its arg is separate. */ | |
1068 | else if (displayname != 0 && skip_args > count_before | |
1069 | && argv[count_before + 1][1] == '-') | |
1070 | argv[count_before + 1] = "-d"; | |
1071 | ||
1072 | /* Don't actually discard this arg. */ | |
1073 | skip_args = count_before; | |
1074 | } | |
1075 | #endif | |
1076 | ||
1077 | /* argmatch must not be used after here, | |
1078 | except when bulding temacs | |
1079 | because the -d argument has not been skipped in skip_args. */ | |
1080 | ||
29b89fe0 RS |
1081 | #ifdef MSDOS |
1082 | /* Call early 'cause init_environment needs it. */ | |
1083 | init_dosfns (); | |
1084 | /* Set defaults for several environment variables. */ | |
18198bb2 RS |
1085 | if (initialized) |
1086 | init_environment (argc, argv, skip_args); | |
1087 | else | |
d1fc6752 | 1088 | tzset (); |
18198bb2 | 1089 | #endif /* MSDOS */ |
29b89fe0 | 1090 | |
8ba50e1a GV |
1091 | #ifdef WINDOWSNT |
1092 | /* Initialize environment from registry settings. */ | |
a3a58294 | 1093 | init_environment (argv); |
41f339d4 | 1094 | init_ntproc (); /* must precede init_editfns */ |
8ba50e1a GV |
1095 | #endif |
1096 | ||
0e956009 JB |
1097 | /* egetenv is a pretty low-level facility, which may get called in |
1098 | many circumstances; it seems flimsy to put off initializing it | |
1099 | until calling init_callproc. */ | |
1100 | set_process_environment (); | |
93aed04d RS |
1101 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
1102 | if this is not done. Do it after set_process_environment so that we | |
1103 | don't pollute Vprocess_environment. */ | |
1104 | #ifdef AIX | |
1105 | putenv ("LANG=C"); | |
1106 | #endif | |
0e956009 | 1107 | |
ace40a69 RS |
1108 | init_buffer (); /* Init default directory of main buffer */ |
1109 | ||
7928f0b5 | 1110 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 1111 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
380e25b8 RS |
1112 | |
1113 | if (initialized) | |
1114 | { | |
1115 | /* Erase any pre-dump messages in the message log, to avoid confusion */ | |
1116 | Lisp_Object old_log_max; | |
1117 | old_log_max = Vmessage_log_max; | |
1118 | XSETFASTINT (Vmessage_log_max, 0); | |
f6fe7bb5 | 1119 | message_dolog ("", 0, 1, 0); |
380e25b8 RS |
1120 | Vmessage_log_max = old_log_max; |
1121 | } | |
1122 | ||
7928f0b5 | 1123 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 1124 | init_lread (); |
f927c5ae | 1125 | |
8bb697c0 RS |
1126 | /* Intern the names of all standard functions and variables; |
1127 | define standard keys. */ | |
f927c5ae JB |
1128 | |
1129 | if (!initialized) | |
1130 | { | |
1131 | /* The basic levels of Lisp must come first */ | |
1132 | /* And data must come first of all | |
1133 | for the sake of symbols like error-message */ | |
1134 | syms_of_data (); | |
1135 | syms_of_alloc (); | |
fb8e9847 | 1136 | syms_of_lread (); |
f927c5ae JB |
1137 | syms_of_print (); |
1138 | syms_of_eval (); | |
1139 | syms_of_fns (); | |
f927c5ae | 1140 | syms_of_floatfns (); |
f927c5ae JB |
1141 | |
1142 | syms_of_abbrev (); | |
1143 | syms_of_buffer (); | |
1144 | syms_of_bytecode (); | |
1145 | syms_of_callint (); | |
1146 | syms_of_casefiddle (); | |
1147 | syms_of_casetab (); | |
1148 | syms_of_callproc (); | |
270ce821 KH |
1149 | syms_of_category (); |
1150 | syms_of_ccl (); | |
1151 | syms_of_charset (); | |
f927c5ae JB |
1152 | syms_of_cmds (); |
1153 | #ifndef NO_DIR_LIBRARY | |
1154 | syms_of_dired (); | |
1155 | #endif /* not NO_DIR_LIBRARY */ | |
1156 | syms_of_display (); | |
1157 | syms_of_doc (); | |
1158 | syms_of_editfns (); | |
1159 | syms_of_emacs (); | |
1160 | syms_of_fileio (); | |
270ce821 | 1161 | syms_of_coding (); /* This should be after syms_of_fileio. */ |
f927c5ae JB |
1162 | #ifdef CLASH_DETECTION |
1163 | syms_of_filelock (); | |
1164 | #endif /* CLASH_DETECTION */ | |
1165 | syms_of_indent (); | |
c2c5ed2c | 1166 | syms_of_insdel (); |
f927c5ae JB |
1167 | syms_of_keyboard (); |
1168 | syms_of_keymap (); | |
1169 | syms_of_macros (); | |
1170 | syms_of_marker (); | |
1171 | syms_of_minibuf (); | |
1172 | syms_of_mocklisp (); | |
f927c5ae | 1173 | syms_of_process (); |
f927c5ae | 1174 | syms_of_search (); |
1cbd5d9d | 1175 | syms_of_frame (); |
f927c5ae | 1176 | syms_of_syntax (); |
0d934e7b | 1177 | syms_of_term (); |
f927c5ae | 1178 | syms_of_undo (); |
bef79ee4 JA |
1179 | |
1180 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
1181 | syms_of_textprop (); | |
f927c5ae JB |
1182 | #ifdef VMS |
1183 | syms_of_vmsproc (); | |
1184 | #endif /* VMS */ | |
05687c54 RS |
1185 | #ifdef WINDOWSNT |
1186 | syms_of_ntproc (); | |
1187 | #endif /* WINDOWSNT */ | |
f927c5ae JB |
1188 | syms_of_window (); |
1189 | syms_of_xdisp (); | |
1190 | #ifdef HAVE_X_WINDOWS | |
72412588 | 1191 | syms_of_xterm (); |
f927c5ae | 1192 | syms_of_xfns (); |
270ce821 | 1193 | syms_of_fontset (); |
72412588 JB |
1194 | #ifdef HAVE_X11 |
1195 | syms_of_xselect (); | |
1196 | #endif | |
f927c5ae JB |
1197 | #endif /* HAVE_X_WINDOWS */ |
1198 | ||
1e9c210b | 1199 | #ifndef HAVE_NTGUI |
dcdcce1a | 1200 | syms_of_xfaces (); |
6c850f3c | 1201 | syms_of_xmenu (); |
1e9c210b | 1202 | #endif |
6c850f3c | 1203 | |
8ba50e1a | 1204 | #ifdef HAVE_NTGUI |
fbd6baed GV |
1205 | syms_of_w32term (); |
1206 | syms_of_w32fns (); | |
1207 | syms_of_w32faces (); | |
1208 | syms_of_w32select (); | |
1209 | syms_of_w32menu (); | |
02062ac3 | 1210 | syms_of_fontset (); |
8ba50e1a GV |
1211 | #endif /* HAVE_NTGUI */ |
1212 | ||
f927c5ae JB |
1213 | #ifdef SYMS_SYSTEM |
1214 | SYMS_SYSTEM; | |
1215 | #endif | |
1216 | ||
1217 | #ifdef SYMS_MACHINE | |
1218 | SYMS_MACHINE; | |
1219 | #endif | |
1220 | ||
1221 | keys_of_casefiddle (); | |
1222 | keys_of_cmds (); | |
1223 | keys_of_buffer (); | |
1224 | keys_of_keyboard (); | |
1225 | keys_of_keymap (); | |
1226 | keys_of_macros (); | |
1227 | keys_of_minibuf (); | |
1228 | keys_of_window (); | |
5e67fbc2 | 1229 | keys_of_frame (); |
f927c5ae JB |
1230 | } |
1231 | ||
8bb697c0 RS |
1232 | if (!noninteractive) |
1233 | { | |
1234 | #ifdef VMS | |
1235 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ | |
1236 | #endif /* VMS */ | |
1237 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
1238 | } | |
1239 | init_keyboard (); /* This too must precede init_sys_modes */ | |
1240 | #ifdef VMS | |
1241 | init_vmsproc (); /* And this too. */ | |
1242 | #endif /* VMS */ | |
1243 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
1244 | init_xdisp (); | |
1245 | init_macros (); | |
1246 | init_editfns (); | |
1247 | #ifdef LISP_FLOAT_TYPE | |
1248 | init_floatfns (); | |
1249 | #endif | |
1250 | #ifdef VMS | |
1251 | init_vmsfns (); | |
1252 | #endif /* VMS */ | |
1253 | init_process (); | |
1254 | ||
f927c5ae JB |
1255 | if (!initialized) |
1256 | { | |
e2925360 | 1257 | char *file; |
303901fb | 1258 | /* Handle -l loadup, args passed by Makefile. */ |
df6530f8 | 1259 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
f927c5ae | 1260 | Vtop_level = Fcons (intern ("load"), |
e2925360 | 1261 | Fcons (build_string (file), Qnil)); |
f927c5ae JB |
1262 | #ifdef CANNOT_DUMP |
1263 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
956e3c7e | 1264 | if (! no_loadup) |
f927c5ae JB |
1265 | Vtop_level = Fcons (intern ("load"), |
1266 | Fcons (build_string ("loadup.el"), Qnil)); | |
1267 | #endif /* CANNOT_DUMP */ | |
1268 | } | |
1269 | ||
93572b43 KH |
1270 | if (initialized) |
1271 | { | |
0269dedb RS |
1272 | #ifdef HAVE_TZSET |
1273 | { | |
1274 | /* If the execution TZ happens to be the same as the dump TZ, | |
1275 | change it to some other value and then change it back, | |
1276 | to force the underlying implementation to reload the TZ info. | |
1277 | This is needed on implementations that load TZ info from files, | |
1278 | since the TZ file contents may differ between dump and execution. */ | |
1279 | char *tz = getenv ("TZ"); | |
1280 | if (tz && !strcmp (tz, dump_tz)) | |
1281 | { | |
1282 | ++*tz; | |
1283 | tzset (); | |
1284 | --*tz; | |
1285 | } | |
1286 | } | |
1287 | #endif | |
93572b43 KH |
1288 | } |
1289 | ||
e610ea43 RS |
1290 | /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on |
1291 | FreeBSD. It might work on some other systems too. | |
1292 | Give it a try and tell me if it works on your system. */ | |
1293 | #ifdef __FreeBSD__ | |
1294 | #ifdef PROFILING | |
1295 | if (initialized) | |
1296 | { | |
1297 | extern void _mcleanup (); | |
1298 | extern char etext; | |
b063fa35 | 1299 | extern Lisp_Object Fredraw_frame (); |
e610ea43 | 1300 | atexit (_mcleanup); |
8b64df46 RS |
1301 | /* This uses Fredraw_frame because that function |
1302 | comes first in the Emacs executable. | |
1303 | It might be better to use something that gives | |
1304 | the start of the text segment, but start_of_text | |
1305 | is not defined on all systems now. */ | |
b063fa35 | 1306 | monstartup (Fredraw_frame, &etext); |
e610ea43 RS |
1307 | } |
1308 | else | |
1309 | moncontrol (0); | |
1310 | #endif | |
1311 | #endif | |
1312 | ||
f927c5ae JB |
1313 | initialized = 1; |
1314 | ||
e7536cff RS |
1315 | #ifdef LOCALTIME_CACHE |
1316 | /* Some versions of localtime have a bug. They cache the value of the time | |
279cc2b8 JB |
1317 | zone rather than looking it up every time. Since localtime() is |
1318 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
1319 | results in localtime ignoring the TZ environment variable. |
1320 | This flushes the new TZ value into localtime. */ | |
1321 | tzset (); | |
e7536cff | 1322 | #endif /* defined (LOCALTIME_CACHE) */ |
279cc2b8 | 1323 | |
f927c5ae JB |
1324 | /* Enter editor command loop. This never returns. */ |
1325 | Frecursive_edit (); | |
1326 | /* NOTREACHED */ | |
1327 | } | |
1328 | \f | |
081bef73 RS |
1329 | /* Sort the args so we can find the most important ones |
1330 | at the beginning of argv. */ | |
1331 | ||
1332 | /* First, here's a table of all the standard options. */ | |
1333 | ||
1334 | struct standard_args | |
1335 | { | |
1336 | char *name; | |
1337 | char *longname; | |
1338 | int priority; | |
1339 | int nargs; | |
1340 | }; | |
1341 | ||
1342 | struct standard_args standard_args[] = | |
1343 | { | |
05922407 RS |
1344 | { "-version", "--version", 150, 0 }, |
1345 | #ifdef HAVE_SHM | |
1346 | { "-nl", "--no-shared-memory", 140, 0 }, | |
1347 | #endif | |
2725719a | 1348 | #ifdef VMS |
05922407 | 1349 | { "-map", "--map-data", 130, 0 }, |
2725719a | 1350 | #endif |
05922407 RS |
1351 | { "-t", "--terminal", 120, 1 }, |
1352 | { "-nw", "--no-windows", 110, 0 }, | |
1353 | { "-batch", "--batch", 100, 0 }, | |
1354 | { "-help", "--help", 90, 0 }, | |
956e3c7e RS |
1355 | { "-no-unibyte", "--no-unibyte", 83, 0 }, |
1356 | { "-multibyte", "--multibyte", 82, 0 }, | |
1357 | { "-unibyte", "--unibyte", 81, 0 }, | |
1358 | { "-no-multibyte", "--no-multibyte", 80, 0 }, | |
05922407 | 1359 | #ifdef CANNOT_DUMP |
956e3c7e | 1360 | { "-nl", "--no-loadup", 70, 0 }, |
05922407 | 1361 | #endif |
956e3c7e RS |
1362 | /* -d must come last before the options handled in startup.el. */ |
1363 | { "-d", "--display", 60, 1 }, | |
1364 | { "-display", 0, 60, 1 }, | |
05922407 | 1365 | /* Now for the options handled in startup.el. */ |
081bef73 RS |
1366 | { "-q", "--no-init-file", 50, 0 }, |
1367 | { "-no-init-file", 0, 50, 0 }, | |
1368 | { "-no-site-file", "--no-site-file", 40, 0 }, | |
1369 | { "-u", "--user", 30, 1 }, | |
1370 | { "-user", 0, 30, 1 }, | |
1371 | { "-debug-init", "--debug-init", 20, 0 }, | |
adab4483 KH |
1372 | { "-i", "--icon-type", 15, 0 }, |
1373 | { "-itype", 0, 15, 0 }, | |
f2bc3538 | 1374 | { "-iconic", "--iconic", 15, 0 }, |
081bef73 RS |
1375 | { "-bg", "--background-color", 10, 1 }, |
1376 | { "-background", 0, 10, 1 }, | |
1377 | { "-fg", "--foreground-color", 10, 1 }, | |
1378 | { "-foreground", 0, 10, 1 }, | |
1379 | { "-bd", "--border-color", 10, 1 }, | |
1380 | { "-bw", "--border-width", 10, 1 }, | |
1381 | { "-ib", "--internal-border", 10, 1 }, | |
1382 | { "-ms", "--mouse-color", 10, 1 }, | |
1383 | { "-cr", "--cursor-color", 10, 1 }, | |
1384 | { "-fn", "--font", 10, 1 }, | |
1385 | { "-font", 0, 10, 1 }, | |
1386 | { "-g", "--geometry", 10, 1 }, | |
1387 | { "-geometry", 0, 10, 1 }, | |
1388 | { "-T", "--title", 10, 1 }, | |
ae63ae52 | 1389 | { "-title", 0, 10, 1 }, |
081bef73 RS |
1390 | { "-name", "--name", 10, 1 }, |
1391 | { "-xrm", "--xrm", 10, 1 }, | |
fcdeb5d9 RS |
1392 | { "-r", "--reverse-video", 5, 0 }, |
1393 | { "-rv", 0, 5, 0 }, | |
1394 | { "-reverse", 0, 5, 0 }, | |
ae63ae52 | 1395 | { "-hb", "--horizontal-scroll-bars", 5, 0 }, |
fcdeb5d9 | 1396 | { "-vb", "--vertical-scroll-bars", 5, 0 }, |
fcdeb5d9 RS |
1397 | /* These have the same priority as ordinary file name args, |
1398 | so they are not reordered with respect to those. */ | |
4af9e0b3 RS |
1399 | { "-L", "--directory", 0, 1 }, |
1400 | { "-directory", 0, 0, 1 }, | |
fcdeb5d9 RS |
1401 | { "-l", "--load", 0, 1 }, |
1402 | { "-load", 0, 0, 1 }, | |
1403 | { "-f", "--funcall", 0, 1 }, | |
1404 | { "-funcall", 0, 0, 1 }, | |
575985b1 | 1405 | { "-eval", "--eval", 0, 1 }, |
2e13f8e9 RS |
1406 | { "-find-file", "--find-file", 0, 1 }, |
1407 | { "-visit", "--visit", 0, 1 }, | |
fcdeb5d9 | 1408 | { "-insert", "--insert", 0, 1 }, |
f2bc3538 | 1409 | /* This should be processed after ordinary file name args and the like. */ |
fcdeb5d9 | 1410 | { "-kill", "--kill", -10, 0 }, |
081bef73 RS |
1411 | }; |
1412 | ||
1413 | /* Reorder the elements of ARGV (assumed to have ARGC elements) | |
1414 | so that the highest priority ones come first. | |
1415 | Do not change the order of elements of equal priority. | |
956e3c7e RS |
1416 | If an option takes an argument, keep it and its argument together. |
1417 | ||
1418 | If an option that takes no argument appears more | |
1419 | than once, eliminate all but one copy of it. */ | |
081bef73 RS |
1420 | |
1421 | static void | |
1422 | sort_args (argc, argv) | |
1423 | int argc; | |
1424 | char **argv; | |
1425 | { | |
1426 | char **new = (char **) xmalloc (sizeof (char *) * argc); | |
1427 | /* For each element of argv, | |
1428 | the corresponding element of options is: | |
1429 | 0 for an option that takes no arguments, | |
1430 | 1 for an option that takes one argument, etc. | |
1431 | -1 for an ordinary non-option argument. */ | |
6dad9359 | 1432 | int *options = (int *) xmalloc (sizeof (int) * argc); |
081bef73 RS |
1433 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
1434 | int to = 1; | |
956e3c7e | 1435 | int incoming_used = 1; |
081bef73 RS |
1436 | int from; |
1437 | int i; | |
c96f26f4 | 1438 | int end_of_options = argc; |
081bef73 RS |
1439 | |
1440 | /* Categorize all the options, | |
1441 | and figure out which argv elts are option arguments. */ | |
1442 | for (from = 1; from < argc; from++) | |
1443 | { | |
1444 | options[from] = -1; | |
fcdeb5d9 | 1445 | priority[from] = 0; |
081bef73 RS |
1446 | if (argv[from][0] == '-') |
1447 | { | |
1448 | int match, thislen; | |
1449 | char *equals; | |
1450 | ||
c96f26f4 RS |
1451 | /* If we have found "--", don't consider |
1452 | any more arguments as options. */ | |
249443b6 | 1453 | if (argv[from][1] == '-' && argv[from][2] == 0) |
c96f26f4 RS |
1454 | { |
1455 | /* Leave the "--", and everything following it, at the end. */ | |
1456 | for (; from < argc; from++) | |
1457 | { | |
1458 | priority[from] = -100; | |
1459 | options[from] = -1; | |
1460 | } | |
1461 | break; | |
1462 | } | |
1463 | ||
081bef73 RS |
1464 | /* Look for a match with a known old-fashioned option. */ |
1465 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1466 | if (!strcmp (argv[from], standard_args[i].name)) | |
1467 | { | |
1468 | options[from] = standard_args[i].nargs; | |
1469 | priority[from] = standard_args[i].priority; | |
fd76ec52 RS |
1470 | if (from + standard_args[i].nargs >= argc) |
1471 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1472 | from += standard_args[i].nargs; |
1473 | goto done; | |
1474 | } | |
1475 | ||
1476 | /* Look for a match with a known long option. | |
1477 | MATCH is -1 if no match so far, -2 if two or more matches so far, | |
1478 | >= 0 (the table index of the match) if just one match so far. */ | |
1479 | if (argv[from][1] == '-') | |
1480 | { | |
1481 | match = -1; | |
1482 | thislen = strlen (argv[from]); | |
1483 | equals = index (argv[from], '='); | |
1484 | if (equals != 0) | |
1485 | thislen = equals - argv[from]; | |
1486 | ||
f609ef57 KH |
1487 | for (i = 0; |
1488 | i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1489 | if (standard_args[i].longname | |
1490 | && !strncmp (argv[from], standard_args[i].longname, | |
1491 | thislen)) | |
081bef73 RS |
1492 | { |
1493 | if (match == -1) | |
1494 | match = i; | |
1495 | else | |
1496 | match = -2; | |
1497 | } | |
1498 | ||
1499 | /* If we found exactly one match, use that. */ | |
1500 | if (match >= 0) | |
1501 | { | |
1502 | options[from] = standard_args[match].nargs; | |
1503 | priority[from] = standard_args[match].priority; | |
1504 | /* If --OPTION=VALUE syntax is used, | |
1505 | this option uses just one argv element. */ | |
1506 | if (equals != 0) | |
1507 | options[from] = 0; | |
fd76ec52 RS |
1508 | if (from + options[from] >= argc) |
1509 | fatal ("Option `%s' requires an argument\n", argv[from]); | |
081bef73 RS |
1510 | from += options[from]; |
1511 | } | |
1512 | } | |
1513 | done: ; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | /* Copy the arguments, in order of decreasing priority, to NEW. */ | |
1518 | new[0] = argv[0]; | |
956e3c7e | 1519 | while (incoming_used < argc) |
081bef73 RS |
1520 | { |
1521 | int best = -1; | |
2c70c992 | 1522 | int best_priority = -9999; |
081bef73 RS |
1523 | |
1524 | /* Find the highest priority remaining option. | |
1525 | If several have equal priority, take the first of them. */ | |
1526 | for (from = 1; from < argc; from++) | |
1527 | { | |
1528 | if (argv[from] != 0 && priority[from] > best_priority) | |
1529 | { | |
1530 | best_priority = priority[from]; | |
1531 | best = from; | |
1532 | } | |
1533 | /* Skip option arguments--they are tied to the options. */ | |
1534 | if (options[from] > 0) | |
1535 | from += options[from]; | |
1536 | } | |
1537 | ||
1538 | if (best < 0) | |
1539 | abort (); | |
1540 | ||
956e3c7e RS |
1541 | /* Copy the highest priority remaining option, with its args, to NEW. |
1542 | Unless it is a duplicate of the previous one. */ | |
1543 | if (! (options[best] == 0 | |
1544 | && ! strcmp (new[to - 1], argv[best]))) | |
1545 | { | |
1546 | new[to++] = argv[best]; | |
1547 | for (i = 0; i < options[best]; i++) | |
1548 | new[to++] = argv[best + i + 1]; | |
1549 | } | |
1550 | ||
1551 | incoming_used += 1 + (options[best] > 0 ? options[best] : 0); | |
081bef73 RS |
1552 | |
1553 | /* Clear out this option in ARGV. */ | |
1554 | argv[best] = 0; | |
1555 | for (i = 0; i < options[best]; i++) | |
1556 | argv[best + i + 1] = 0; | |
1557 | } | |
1558 | ||
81b7af72 RS |
1559 | /* If duplicate options were deleted, fill up extra space with null ptrs. */ |
1560 | while (to < argc) | |
1561 | new[to++] = 0; | |
1562 | ||
6dad9359 | 1563 | bcopy (new, argv, sizeof (char *) * argc); |
0bf591da RS |
1564 | |
1565 | free (options); | |
1566 | free (new); | |
1567 | free (priority); | |
081bef73 RS |
1568 | } |
1569 | \f | |
f927c5ae | 1570 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
edc8ae07 | 1571 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
1572 | If ARG is an integer, return ARG as the exit program code.\n\ |
1573 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
1574 | The value of `kill-emacs-hook', if not void,\n\ | |
1575 | is a list of functions (of no args),\n\ | |
1576 | all of which are called before Emacs is actually killed.") | |
1577 | (arg) | |
1578 | Lisp_Object arg; | |
1579 | { | |
1580 | Lisp_Object hook, hook1; | |
1581 | int i; | |
1582 | struct gcpro gcpro1; | |
1583 | ||
1584 | GCPRO1 (arg); | |
1585 | ||
1586 | if (feof (stdin)) | |
1587 | arg = Qt; | |
1588 | ||
2447c626 | 1589 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
1590 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
1591 | ||
f927c5ae JB |
1592 | UNGCPRO; |
1593 | ||
1594 | /* Is it really necessary to do this deassign | |
1595 | when we are going to exit anyway? */ | |
1596 | /* #ifdef VMS | |
1597 | stop_vms_input (); | |
1598 | #endif */ | |
40be253a | 1599 | |
d0068e25 | 1600 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 1601 | |
58545838 KH |
1602 | /* If we have an auto-save list file, |
1603 | kill it because we are exiting Emacs deliberately (not crashing). | |
1604 | Do it after shut_down_emacs, which does an auto-save. */ | |
1605 | if (STRINGP (Vauto_save_list_file_name)) | |
1606 | unlink (XSTRING (Vauto_save_list_file_name)->data); | |
1607 | ||
55ccc0b3 | 1608 | exit (INTEGERP (arg) ? XINT (arg) |
f927c5ae JB |
1609 | #ifdef VMS |
1610 | : 1 | |
1611 | #else | |
1612 | : 0 | |
1613 | #endif | |
1614 | ); | |
1615 | /* NOTREACHED */ | |
1616 | } | |
40be253a JB |
1617 | |
1618 | ||
1619 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
1620 | buffers, kill any child processes, clean up the terminal modes (if | |
1621 | we're in the foreground), and other stuff like that. Don't perform | |
1622 | any redisplay; this may be called when Emacs is shutting down in | |
1623 | the background, or after its X connection has died. | |
1624 | ||
1625 | If SIG is a signal number, print a message for it. | |
1626 | ||
1627 | This is called by fatal signal handlers, X protocol error handlers, | |
1628 | and Fkill_emacs. */ | |
f7ab4e3d | 1629 | |
40be253a | 1630 | void |
f7ab4e3d | 1631 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 1632 | int sig, no_x; |
f7ab4e3d | 1633 | Lisp_Object stuff; |
40be253a | 1634 | { |
829d872b RS |
1635 | /* Prevent running of hooks from now on. */ |
1636 | Vrun_hooks = Qnil; | |
1637 | ||
40be253a JB |
1638 | /* If we are controlling the terminal, reset terminal modes */ |
1639 | #ifdef EMACS_HAVE_TTY_PGRP | |
1640 | { | |
d04d81d2 RS |
1641 | int pgrp = EMACS_GETPGRP (0); |
1642 | ||
40be253a JB |
1643 | int tpgrp; |
1644 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 1645 | && tpgrp == pgrp) |
40be253a JB |
1646 | { |
1647 | fflush (stdout); | |
1648 | reset_sys_modes (); | |
1649 | if (sig && sig != SIGTERM) | |
1650 | fprintf (stderr, "Fatal error (%d).", sig); | |
1651 | } | |
1652 | } | |
1653 | #else | |
1654 | fflush (stdout); | |
1655 | reset_sys_modes (); | |
1656 | #endif | |
1657 | ||
f7ab4e3d RS |
1658 | stuff_buffered_input (stuff); |
1659 | ||
40be253a JB |
1660 | kill_buffer_processes (Qnil); |
1661 | Fdo_auto_save (Qt, Qnil); | |
1662 | ||
1663 | #ifdef CLASH_DETECTION | |
1664 | unlock_all_files (); | |
1665 | #endif | |
1666 | ||
1667 | #ifdef VMS | |
1668 | kill_vms_processes (); | |
1669 | #endif | |
1670 | ||
5e7f8733 | 1671 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
41423a80 | 1672 | #ifdef HAVE_X_WINDOWS |
f7511647 RS |
1673 | /* It's not safe to call intern here. Maybe we are crashing. */ |
1674 | if (!noninteractive && SYMBOLP (Vwindow_system) | |
1675 | && XSYMBOL (Vwindow_system)->name->size == 1 | |
1676 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' | |
1677 | && ! no_x) | |
41423a80 RS |
1678 | Fx_close_current_connection (); |
1679 | #endif /* HAVE_X_WINDOWS */ | |
5e7f8733 | 1680 | #endif |
41423a80 | 1681 | |
40be253a JB |
1682 | #ifdef SIGIO |
1683 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
1684 | and cause a SIGHUP because the input descriptor is already closed. */ | |
1685 | unrequest_sigio (); | |
1686 | signal (SIGIO, SIG_IGN); | |
1687 | #endif | |
41f339d4 RS |
1688 | |
1689 | #ifdef WINDOWSNT | |
1690 | term_ntproc (); | |
1691 | #endif | |
d546e578 EZ |
1692 | |
1693 | #ifdef MSDOS | |
1694 | dos_cleanup (); | |
1695 | #endif | |
40be253a JB |
1696 | } |
1697 | ||
1698 | ||
f927c5ae JB |
1699 | \f |
1700 | #ifndef CANNOT_DUMP | |
f927c5ae JB |
1701 | |
1702 | #ifdef HAVE_SHM | |
1703 | ||
1704 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
1705 | "Dump current state of Emacs into data file FILENAME.\n\ | |
1706 | This function exists on systems that use HAVE_SHM.") | |
c9aae259 EN |
1707 | (filename) |
1708 | Lisp_Object filename; | |
f927c5ae | 1709 | { |
55697f5b | 1710 | extern char my_edata[]; |
f927c5ae | 1711 | Lisp_Object tem; |
f927c5ae | 1712 | |
c9aae259 EN |
1713 | CHECK_STRING (filename, 0); |
1714 | filename = Fexpand_file_name (filename, Qnil); | |
f927c5ae JB |
1715 | |
1716 | tem = Vpurify_flag; | |
1717 | Vpurify_flag = Qnil; | |
1718 | ||
1719 | fflush (stdout); | |
1720 | /* Tell malloc where start of impure now is */ | |
1721 | /* Also arrange for warnings when nearly out of space. */ | |
1722 | #ifndef SYSTEM_MALLOC | |
1090a161 | 1723 | memory_warnings (my_edata, malloc_warning); |
f927c5ae | 1724 | #endif |
c9aae259 | 1725 | map_out_data (XSTRING (filename)->data); |
f927c5ae JB |
1726 | |
1727 | Vpurify_flag = tem; | |
1728 | ||
1729 | return Qnil; | |
1730 | } | |
1731 | ||
1732 | #else /* not HAVE_SHM */ | |
1733 | ||
1734 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
1735 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
1736 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
1737 | This is used in the file `loadup.el' when building Emacs.\n\ | |
1738 | \n\ | |
87a98b1a | 1739 | You must run Emacs in batch mode in order to dump it.") |
c9aae259 EN |
1740 | (filename, symfile) |
1741 | Lisp_Object filename, symfile; | |
f927c5ae | 1742 | { |
55697f5b | 1743 | extern char my_edata[]; |
f927c5ae | 1744 | Lisp_Object tem; |
1b7ddf4f RS |
1745 | Lisp_Object symbol; |
1746 | int count = specpdl_ptr - specpdl; | |
f927c5ae | 1747 | |
87a98b1a RS |
1748 | if (! noninteractive) |
1749 | error ("Dumping Emacs works only in batch mode"); | |
1750 | ||
1b7ddf4f RS |
1751 | /* Bind `command-line-processed' to nil before dumping, |
1752 | so that the dumped Emacs will process its command line | |
1753 | and set up to work with X windows if appropriate. */ | |
1754 | symbol = intern ("command-line-process"); | |
1755 | specbind (symbol, Qnil); | |
1756 | ||
c9aae259 EN |
1757 | CHECK_STRING (filename, 0); |
1758 | filename = Fexpand_file_name (filename, Qnil); | |
1759 | if (!NILP (symfile)) | |
f927c5ae | 1760 | { |
c9aae259 EN |
1761 | CHECK_STRING (symfile, 0); |
1762 | if (XSTRING (symfile)->size) | |
1763 | symfile = Fexpand_file_name (symfile, Qnil); | |
f927c5ae JB |
1764 | } |
1765 | ||
1766 | tem = Vpurify_flag; | |
1767 | Vpurify_flag = Qnil; | |
1768 | ||
0269dedb RS |
1769 | #ifdef HAVE_TZSET |
1770 | set_time_zone_rule (dump_tz); | |
1771 | #ifndef LOCALTIME_CACHE | |
1772 | /* Force a tz reload, since set_time_zone_rule doesn't. */ | |
1773 | tzset (); | |
1774 | #endif | |
1775 | #endif | |
1776 | ||
f927c5ae JB |
1777 | fflush (stdout); |
1778 | #ifdef VMS | |
c9aae259 | 1779 | mapout_data (XSTRING (filename)->data); |
f927c5ae JB |
1780 | #else |
1781 | /* Tell malloc where start of impure now is */ | |
1782 | /* Also arrange for warnings when nearly out of space. */ | |
1783 | #ifndef SYSTEM_MALLOC | |
cc5f52cb RS |
1784 | #ifndef WINDOWSNT |
1785 | /* On Windows, this was done before dumping, and that once suffices. | |
1786 | Meanwhile, my_edata is not valid on Windows. */ | |
cb37cf78 | 1787 | memory_warnings (my_edata, malloc_warning); |
cc5f52cb | 1788 | #endif /* not WINDOWSNT */ |
15aaf1b5 RS |
1789 | #endif |
1790 | #ifdef DOUG_LEA_MALLOC | |
1791 | malloc_state_ptr = malloc_get_state (); | |
f927c5ae | 1792 | #endif |
c9aae259 EN |
1793 | unexec (XSTRING (filename)->data, |
1794 | !NILP (symfile) ? XSTRING (symfile)->data : 0, my_edata, 0, 0); | |
15aaf1b5 RS |
1795 | #ifdef DOUG_LEA_MALLOC |
1796 | free (malloc_state_ptr); | |
1797 | #endif | |
f927c5ae JB |
1798 | #endif /* not VMS */ |
1799 | ||
1800 | Vpurify_flag = tem; | |
1801 | ||
1b7ddf4f | 1802 | return unbind_to (count, Qnil); |
f927c5ae JB |
1803 | } |
1804 | ||
1805 | #endif /* not HAVE_SHM */ | |
1806 | ||
1807 | #endif /* not CANNOT_DUMP */ | |
1808 | \f | |
4b163808 | 1809 | #ifndef SEPCHAR |
f927c5ae JB |
1810 | #define SEPCHAR ':' |
1811 | #endif | |
1812 | ||
1813 | Lisp_Object | |
1814 | decode_env_path (evarname, defalt) | |
1815 | char *evarname, *defalt; | |
1816 | { | |
1817 | register char *path, *p; | |
213d0b1f | 1818 | Lisp_Object lpath, element, tem; |
f927c5ae | 1819 | |
2447c626 JB |
1820 | /* It's okay to use getenv here, because this function is only used |
1821 | to initialize variables when Emacs starts up, and isn't called | |
1822 | after that. */ | |
e065a56e JB |
1823 | if (evarname != 0) |
1824 | path = (char *) getenv (evarname); | |
1825 | else | |
1826 | path = 0; | |
f927c5ae JB |
1827 | if (!path) |
1828 | path = defalt; | |
6a30e6d6 RS |
1829 | #ifdef DOS_NT |
1830 | /* Ensure values from the environment use the proper directory separator. */ | |
1831 | if (path) | |
1832 | { | |
1833 | p = alloca (strlen (path) + 1); | |
1834 | strcpy (p, path); | |
1835 | path = p; | |
1836 | ||
1837 | if ('/' == DIRECTORY_SEP) | |
1838 | dostounix_filename (path); | |
1839 | else | |
1840 | unixtodos_filename (path); | |
1841 | } | |
1842 | #endif | |
f927c5ae JB |
1843 | lpath = Qnil; |
1844 | while (1) | |
1845 | { | |
1846 | p = index (path, SEPCHAR); | |
1847 | if (!p) p = path + strlen (path); | |
213d0b1f RS |
1848 | element = (p - path ? make_string (path, p - path) |
1849 | : build_string (".")); | |
1850 | ||
1851 | /* Add /: to the front of the name | |
1852 | if it would otherwise be treated as magic. */ | |
1853 | tem = Ffind_file_name_handler (element, Qt); | |
1854 | if (! NILP (tem)) | |
1855 | element = concat2 (build_string ("/:"), element); | |
1856 | ||
1857 | lpath = Fcons (element, lpath); | |
f927c5ae JB |
1858 | if (*p) |
1859 | path = p + 1; | |
1860 | else | |
1861 | break; | |
1862 | } | |
1863 | return Fnreverse (lpath); | |
1864 | } | |
1865 | ||
dfcf069d | 1866 | void |
f927c5ae JB |
1867 | syms_of_emacs () |
1868 | { | |
213d0b1f RS |
1869 | Qfile_name_handler_alist = intern ("file-name-handler-alist"); |
1870 | staticpro (&Qfile_name_handler_alist); | |
1871 | ||
83591e66 | 1872 | #ifndef CANNOT_DUMP |
f927c5ae JB |
1873 | #ifdef HAVE_SHM |
1874 | defsubr (&Sdump_emacs_data); | |
1875 | #else | |
1876 | defsubr (&Sdump_emacs); | |
83591e66 | 1877 | #endif |
f927c5ae JB |
1878 | #endif |
1879 | ||
1880 | defsubr (&Skill_emacs); | |
1881 | ||
59653951 | 1882 | defsubr (&Sinvocation_name); |
ace40a69 | 1883 | defsubr (&Sinvocation_directory); |
59653951 | 1884 | |
f927c5ae JB |
1885 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
1886 | "Args passed by shell to Emacs, as a list of strings."); | |
1887 | ||
1888 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
1889 | "Value is symbol indicating type of operating system you are using."); | |
1890 | Vsystem_type = intern (SYSTEM_TYPE); | |
1891 | ||
271c7b7c RS |
1892 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
1893 | "Value is string indicating configuration Emacs was built for."); | |
f7511647 | 1894 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
271c7b7c | 1895 | |
f0fc0b1a KH |
1896 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
1897 | "String containing the configuration options Emacs was built with."); | |
1898 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); | |
1899 | ||
f927c5ae JB |
1900 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
1901 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 1902 | |
e5d77022 | 1903 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
1904 | "Hook to be run whenever kill-emacs is called.\n\ |
1905 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
1906 | in other similar situations), functions placed on this hook should not\n\ | |
9f232a5d RS |
1907 | expect to be able to interact with the user. To ask for confirmation,\n\ |
1908 | see `kill-emacs-query-functions' instead."); | |
edc8ae07 | 1909 | Vkill_emacs_hook = Qnil; |
3005da00 | 1910 | |
7317d9e8 RS |
1911 | #ifdef SIGUSR1 |
1912 | DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook, | |
3e75bb9e | 1913 | "Hook to be run whenever emacs receives a USR1 signal"); |
7317d9e8 RS |
1914 | Vsignal_USR1_hook = Qnil; |
1915 | #ifdef SIGUSR2 | |
1916 | DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook, | |
3e75bb9e | 1917 | "Hook to be run whenever emacs receives a USR2 signal"); |
7317d9e8 RS |
1918 | Vsignal_USR2_hook = Qnil; |
1919 | #endif | |
1920 | #endif | |
1921 | ||
1922 | ||
3005da00 RS |
1923 | DEFVAR_INT ("emacs-priority", &emacs_priority, |
1924 | "Priority for Emacs to run at.\n\ | |
1925 | This value is effective only if set before Emacs is dumped,\n\ | |
1926 | and only if the Emacs executable is installed with setuid to permit\n\ | |
621ecf99 | 1927 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
a422068f | 1928 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
e7a9e1c3 RS |
1929 | before you compile Emacs, to enable the code for this feature."); |
1930 | emacs_priority = 0; | |
074a066b GV |
1931 | |
1932 | DEFVAR_LISP ("path-separator", &Vpath_separator, | |
1933 | "The directory separator in search paths, as a string."); | |
1934 | { | |
1935 | char c = SEPCHAR; | |
1936 | Vpath_separator = make_string (&c, 1); | |
1937 | } | |
59653951 | 1938 | |
f67de86f RS |
1939 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
1940 | "The program name that was used to run Emacs.\n\ | |
1941 | Any directory names are omitted."); | |
1942 | ||
1943 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, | |
1944 | "The directory in which the Emacs executable was found, to run it.\n\ | |
1945 | The value is nil if that directory's name is not known."); | |
1946 | ||
1947 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, | |
1948 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ | |
1949 | This is non-nil when we can't find those directories in their standard\n\ | |
1950 | installed locations, but we can find them\n\ | |
1951 | near where the Emacs executable was found."); | |
07f4d123 | 1952 | Vinstallation_directory = Qnil; |
f927c5ae | 1953 | } |