emacs.c 41.8 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Fully extensible Emacs, running on Unix, intended for GNU.
Karl Heuer's avatar
Karl Heuer committed
2
   Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
3 4 5 6 7

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
8
the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
9 10 11 12 13 14 15 16 17
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
Richard M. Stallman's avatar
Richard M. Stallman committed
18 19
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */
Jim Blandy's avatar
Jim Blandy committed
20 21 22 23 24


#include <signal.h>
#include <errno.h>

25
#include <config.h>
Jim Blandy's avatar
Jim Blandy committed
26 27 28 29 30 31 32 33 34
#include <stdio.h>

#include <sys/types.h>
#include <sys/file.h>

#ifdef VMS
#include <ssdef.h>
#endif

35
#ifdef BSD_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
36 37 38 39 40
#include <sys/ioctl.h>
#endif

#include "lisp.h"
#include "commands.h"
Joseph Arceneaux's avatar
Joseph Arceneaux committed
41
#include "intervals.h"
Jim Blandy's avatar
Jim Blandy committed
42

43
#include "systty.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
44
#include "blockinput.h"
45
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
46
#include "process.h"
Jim Blandy's avatar
Jim Blandy committed
47

48 49 50 51 52
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
#include <sys/resource.h>
#endif

Jim Blandy's avatar
Jim Blandy committed
53 54 55 56
#ifndef O_RDWR
#define O_RDWR 2
#endif

57
extern void malloc_warning ();
58
extern void set_time_zone_rule ();
59 60 61
extern char *index ();
extern char *strerror ();

Jim Blandy's avatar
Jim Blandy committed
62 63 64
/* Command line args from shell, as list of strings */
Lisp_Object Vcommand_line_args;

65 66 67 68
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

69 70 71
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

72 73 74 75
/* The directory name in which to find subdirs such as lisp and etc.
   nil means get them only from PATH_LOADSEARCH.  */
Lisp_Object Vinstallation_directory;

Jim Blandy's avatar
Jim Blandy committed
76 77 78
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

Jim Blandy's avatar
Jim Blandy committed
79 80 81 82 83
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

84
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
85
Lisp_Object Vsystem_type;
86 87 88

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
89 90 91 92 93

/* Variable whose value is string giving configuration options,
   for use when reporting bugs.  */
Lisp_Object Vsystem_configuration_options;

94 95
Lisp_Object Qfile_name_handler_alist;

Jim Blandy's avatar
Jim Blandy committed
96 97 98 99
/* If non-zero, emacs should not attempt to use an window-specific code,
   but instead should use the virtual terminal under which it was started */
int inhibit_window_system;

100 101 102
/* If nonzero, set Emacs to run at this priority.  This is also used
   in child_setup and sys_suspend to make sure subshells run at normal
   priority; Those functions have their own extern declaration.  */
103 104
int emacs_priority;

105 106 107 108
/* If non-zero a filter or a sentinel is running.  Tested to save the match
   data on the first attempt to change it inside asynchronous code. */
int running_asynch_code;

109
#ifdef BSD_PGRPS
110 111 112 113
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
114 115 116 117 118 119 120 121 122
#ifdef HAVE_X_WINDOWS
/* If non-zero, -d was specified, meaning we're using some window system. */
int display_arg;
#endif

/* An address near the bottom of the stack.
   Tells GC how to save a copy of the stack.  */
char *stack_bottom;

123
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
124
extern Lisp_Object Vwindow_system;
125
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
126

127 128
extern Lisp_Object Vauto_save_list_file_name;

Jim Blandy's avatar
Jim Blandy committed
129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
#ifdef USG_SHARED_LIBRARIES
/* If nonzero, this is the place to put the end of the writable segment
   at startup.  */

unsigned int bss_end = 0;
#endif

/* Nonzero means running Emacs without interactive terminal.  */

int noninteractive;

/* Value of Lisp variable `noninteractive'.
   Normally same as C variable `noninteractive'
   but nothing terrible happens if user sets this one.  */

int noninteractive1;
145 146 147 148

/* Save argv and argc.  */
char **initial_argv;
int initial_argc;
149 150

static void sort_args ();
Jim Blandy's avatar
Jim Blandy committed
151 152 153 154 155 156 157 158

/* Signal code for the fatal signal that was received */
int fatal_error_code;

/* Nonzero if handling a fatal error already */
int fatal_error_in_progress;

/* Handle bus errors, illegal instruction, etc. */
Jim Blandy's avatar
Jim Blandy committed
159
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
160 161 162 163 164 165
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

166 167
  TOTALLY_UNBLOCK_INPUT;

Jim Blandy's avatar
Jim Blandy committed
168
  /* If fatal error occurs in code below, avoid infinite recursion.  */
169 170 171
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
172

173
      shut_down_emacs (sig, 0, Qnil);
174
    }
Jim Blandy's avatar
Jim Blandy committed
175 176 177 178

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
179 180 181 182
  /* Signal the same code; this time it will really be fatal.
     Remember that since we're in a signal handler, the signal we're
     going to send is probably blocked, so we have to unblock it if we
     want to really receive it.  */
183
#ifndef MSDOS
184
  sigunblock (sigmask (fatal_error_code));
185
#endif
Jim Blandy's avatar
Jim Blandy committed
186 187 188
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
189 190 191

#ifdef SIGDANGER

Richard M. Stallman's avatar
Richard M. Stallman committed
192
/* Handler for SIGDANGER.  */
193 194 195 196 197 198 199
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
200 201 202

  /* It might be unsafe to call do_auto_save now.  */
  force_auto_save_soon ();
203 204
}
#endif
Jim Blandy's avatar
Jim Blandy committed
205 206 207 208 209 210 211 212 213 214

/* Code for dealing with Lisp access to the Unix command line */

static
init_cmdargs (argc, argv, skip_args)
     int argc;
     char **argv;
     int skip_args;
{
  register int i;
215 216 217
  Lisp_Object name, dir, tem;
  int count = specpdl_ptr - specpdl;
  Lisp_Object raw_name;
Jim Blandy's avatar
Jim Blandy committed
218

219 220 221
  initial_argv = argv;
  initial_argc = argc;

222 223 224 225 226 227 228 229 230 231 232
  raw_name = build_string (argv[0]);

  /* Add /: to the front of the name
     if it would otherwise be treated as magic.  */
  tem = Ffind_file_name_handler (raw_name, Qt);
  if (! NILP (tem))
    raw_name = concat2 (build_string ("/:"), raw_name);

  Vinvocation_name = Ffile_name_nondirectory (raw_name);
  Vinvocation_directory = Ffile_name_directory (raw_name);

233 234 235 236 237 238
  /* If we got no directory in argv[0], search PATH to find where
     Emacs actually came from.  */
  if (NILP (Vinvocation_directory))
    {
      Lisp_Object found;
      int yes = openp (Vexec_path, Vinvocation_name,
Richard M. Stallman's avatar
Richard M. Stallman committed
239
		       EXEC_SUFFIXES, &found, 1);
240
      if (yes == 1)
241 242 243 244 245 246 247 248
	{
	  /* Add /: to the front of the name
	     if it would otherwise be treated as magic.  */
	  tem = Ffind_file_name_handler (found, Qt);
	  if (! NILP (tem))
	    found = concat2 (build_string ("/:"), found);
	  Vinvocation_directory = Ffile_name_directory (found);
	}
249
    }
250

251 252
  if (!NILP (Vinvocation_directory)
      && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
253 254
    /* Emacs was started with relative path, like ./emacs.
       Make it absolute.  */
255 256
    Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);

257 258 259 260 261 262 263 264
  Vinstallation_directory = Qnil;

  if (!NILP (Vinvocation_directory))
    {
      dir = Vinvocation_directory;
      name = Fexpand_file_name (Vinvocation_name, dir);
      while (1)
	{
265
	  Lisp_Object tem, lib_src_exists;
266 267
	  Lisp_Object etc_exists, info_exists;

268 269 270 271 272 273
	  /* See if dir contains subdirs for use by Emacs.
	     Check for the ones that would exist in a build directory,
	     not including lisp and info.  */
	  tem = Fexpand_file_name (build_string ("lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
	  if (!NILP (lib_src_exists))
274
	    {
275 276 277
	      tem = Fexpand_file_name (build_string ("etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
278
		{
279 280 281
		  Vinstallation_directory
		    = Ffile_name_as_directory (dir);
		  break;
282 283 284 285
		}
	    }

	  /* See if dir's parent contains those subdirs.  */
286 287 288
	  tem = Fexpand_file_name (build_string ("../lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
	  if (!NILP (lib_src_exists))
289
	    {
290 291 292
	      tem = Fexpand_file_name (build_string ("../etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
293
		{
294 295 296 297
		  tem = Fexpand_file_name (build_string (".."), dir);
		  Vinstallation_directory
		    = Ffile_name_as_directory (tem);
		  break;
298 299 300 301 302 303 304 305
		}
	    }

	  /* If the Emacs executable is actually a link,
	     next try the dir that the link points into.  */
	  tem = Ffile_symlink_p (name);
	  if (!NILP (tem))
	    {
306
	      name = Fexpand_file_name (tem, dir);
307 308 309 310 311 312 313
	      dir = Ffile_name_directory (name);
	    }
	  else
	    break;
	}
    }

Jim Blandy's avatar
Jim Blandy committed
314 315 316 317 318 319 320 321
  Vcommand_line_args = Qnil;

  for (i = argc - 1; i >= 0; i--)
    {
      if (i == 0 || i > skip_args)
	Vcommand_line_args
	  = Fcons (build_string (argv[i]), Vcommand_line_args);
    }
322 323

  unbind_to (count, Qnil);
Jim Blandy's avatar
Jim Blandy committed
324
}
325 326 327 328 329 330 331 332 333

DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
  "Return the program name that was used to run Emacs.\n\
Any directory names are omitted.")
  ()
{
  return Fcopy_sequence (Vinvocation_name);
}

334 335 336 337 338 339 340 341
DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
  0, 0, 0,
  "Return the directory name in which the Emacs executable was located")
  ()
{
  return Fcopy_sequence (Vinvocation_directory);
}

Jim Blandy's avatar
Jim Blandy committed
342 343 344

#ifdef VMS
#ifdef LINK_CRTL_SHARE
345
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
346
extern noshare char **environ;
347
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
348 349 350
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

351 352 353 354 355 356
#ifdef HAVE_TZSET
/* A valid but unlikely value for the TZ environment value.
   It is OK (though a bit slower) if the user actually chooses this value.  */
static char dump_tz[] = "UtC0";
#endif

357
#ifndef ORDINARY_LINK
358 359 360 361 362
/* We don't include crtbegin.o and crtend.o in the link,
   so these functions and variables might be missed.
   Provide dummy definitions to avoid error.
   (We don't have any real constructors or destructors.)  */
#ifdef __GNUC__
363
#ifndef GCC_CTORS_IN_LIBC
364
__do_global_ctors ()
365
{}
366 367
__do_global_ctors_aux ()
{}
368 369
__do_global_dtors ()
{}
370 371
/* Linux has a bug in its library; avoid an error.  */
#ifndef LINUX
372
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
373
#endif
374
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
375
#endif /* GCC_CTORS_IN_LIBC */
376
__main ()
377 378
{}
#endif /* __GNUC__ */
379
#endif /* ORDINARY_LINK */
380

Karl Heuer's avatar
Karl Heuer committed
381 382 383 384 385 386 387 388 389
/* Test whether the next argument in ARGV matches SSTR or a prefix of
   LSTR (at least MINLEN characters).  If so, then if VALPTR is non-null
   (the argument is supposed to have a value) store in *VALPTR either
   the next argument or the portion of this one after the equal sign.
   ARGV is read starting at position *SKIPPTR; this index is advanced
   by the number of arguments used.

   Too bad we can't just use getopt for all of this, but we don't have
   enough information to do it right.  */
390

Karl Heuer's avatar
Karl Heuer committed
391
static int
392
argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
Karl Heuer's avatar
Karl Heuer committed
393
     char **argv;
394
     int argc;
Karl Heuer's avatar
Karl Heuer committed
395 396 397 398 399 400 401 402
     char *sstr;
     char *lstr;
     int minlen;
     char **valptr;
     int *skipptr;
{
  char *p;
  int arglen;
403 404 405 406 407 408 409
  char *arg;

  /* Don't access argv[argc]; give up in advance.  */
  if (argc <= *skipptr + 1)
    return 0;

  arg = argv[*skipptr+1];
Karl Heuer's avatar
Karl Heuer committed
410 411 412 413 414 415 416 417 418 419 420 421 422 423 424
  if (arg == NULL)
    return 0;
  if (strcmp (arg, sstr) == 0)
    {
      if (valptr != NULL)
	{
	  *valptr = argv[*skipptr+2];
	  *skipptr += 2;
	}
      else
	*skipptr += 1;
      return 1;
    }
  arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
	    ? p - arg : strlen (arg));
425
  if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
Karl Heuer's avatar
Karl Heuer committed
426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
    return 0;
  else if (valptr == NULL)
    {
      *skipptr += 1;
      return 1;
    }
  else if (p != NULL)
    {
      *valptr = p+1;
      *skipptr += 1;
      return 1;
    }
  else if (argv[*skipptr+2] != NULL)
    {
      *valptr = argv[*skipptr+2];
      *skipptr += 2;
      return 1;
    }
  else
    {
      return 0;
    }
}

Jim Blandy's avatar
Jim Blandy committed
450 451 452 453 454 455 456 457 458 459
/* ARGSUSED */
main (argc, argv, envp)
     int argc;
     char **argv;
     char **envp;
{
  char stack_bottom_variable;
  int skip_args = 0;
  extern int errno;
  extern sys_nerr;
460 461 462
#ifdef HAVE_SETRLIMIT
  struct rlimit rlim;
#endif
Jim Blandy's avatar
Jim Blandy committed
463

464 465 466 467
#ifdef LINUX_SBRK_BUG
  __sbrk (1);
#endif

468 469
  sort_args (argc, argv);

470 471 472 473 474 475 476 477 478 479 480
  if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
    {
      Lisp_Object tem;
      tem = Fsymbol_value (intern ("emacs-version"));
      if (!STRINGP (tem))
	{
	  fprintf (stderr, "Invalid value of `emacs-version'\n");
	  exit (1);
	}
      else
	{
481
	  printf ("GNU Emacs %s\n", XSTRING (tem)->data);
482 483 484 485 486 487
	  printf ("Copyright (C) 1996 Free Software Foundation, Inc.\n");
	  printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
	  printf ("You may redistribute copies of Emacs\n");
	  printf ("under the terms of the GNU General Public License.\n");
	  printf ("For more information about these matters, ");
	  printf ("see the files named COPYING.\n");
488 489 490 491
	  exit (0);
	}
    }

Jim Blandy's avatar
Jim Blandy committed
492 493
/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
494
  if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
495 496 497 498 499 500 501 502 503 504 505 506 507
    {
      map_in_data (0);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 1;
    }
  else
    {
      map_in_data (1);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 0;
    }
#endif

508
#ifdef NeXT
509 510 511 512 513 514 515
  {
    extern int malloc_cookie;
    /* This helps out unexnext.c.  */
    if (initialized)
      if (malloc_jumpstart (malloc_cookie) != 0)
	printf ("malloc jumpstart failed!\n");
  }
516 517
#endif /* NeXT */

Jim Blandy's avatar
Jim Blandy committed
518 519
#ifdef VMS
  /* If -map specified, map the data file in */
Karl Heuer's avatar
Karl Heuer committed
520 521
  {
    char *file;
522
    if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
523 524
      mapin_data (file);
  }
Jim Blandy's avatar
Jim Blandy committed
525 526

#ifdef LINK_CRTL_SHARE
527
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
528 529 530 531 532 533 534 535 536
  /* Bletcherous shared libraries! */
  if (!stdin)
    stdin = fdopen (0, "r");
  if (!stdout)
    stdout = fdopen (1, "w");
  if (!stderr)
    stderr = fdopen (2, "w");
  if (!environ)
    environ = envp;
537
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
538 539 540
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

541 542 543 544 545 546 547 548 549
#ifdef HAVE_SETRLIMIT
  /* Extend the stack space available.  */
  if (!getrlimit (RLIMIT_STACK, &rlim))
    {
      rlim.rlim_cur = rlim.rlim_max;
      setrlimit (RLIMIT_STACK, &rlim);
    }
#endif

Jim Blandy's avatar
Jim Blandy committed
550 551 552 553 554 555 556 557 558 559
  /* Record (approximately) where the stack begins.  */
  stack_bottom = &stack_bottom_variable;

#ifdef RUN_TIME_REMAP
  if (initialized)
    run_time_remap (argv[0]);
#endif

#ifdef USG_SHARED_LIBRARIES
  if (bss_end)
560
    brk ((void *)bss_end);
Jim Blandy's avatar
Jim Blandy committed
561 562 563
#endif

  clearerr (stdin);
564

Jim Blandy's avatar
Jim Blandy committed
565 566
#ifndef SYSTEM_MALLOC
  if (! initialized)
567 568 569 570 571 572 573 574
    {
      /* Arrange to get warning messages as memory fills up.  */
      memory_warnings (0, malloc_warning);

      /* Arrange to disable interrupt input while malloc and friends are
	 running.  */
      uninterrupt_malloc ();
    }
Jim Blandy's avatar
Jim Blandy committed
575 576
#endif	/* not SYSTEM_MALLOC */

577 578 579 580
#ifdef MSDOS
  /* We do all file input/output as binary files.  When we need to translate
     newlines, we do that manually.  */
  _fmode = O_BINARY;
581 582 583 584 585 586 587 588 589 590

#if __DJGPP__ >= 2
  if (!isatty (fileno (stdin)))
    setmode (fileno (stdin), O_BINARY);
  if (!isatty (fileno (stdout)))
    {
      fflush (stdout);
      setmode (fileno (stdout), O_BINARY);
    }
#else  /* not __DJGPP__ >= 2 */
591 592 593
  (stdin)->_flag &= ~_IOTEXT;
  (stdout)->_flag &= ~_IOTEXT;
  (stderr)->_flag &= ~_IOTEXT;
594
#endif /* not __DJGPP__ >= 2 */
595 596
#endif /* MSDOS */

597
#ifdef SET_EMACS_PRIORITY
598
  if (emacs_priority)
599
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
600
  setuid (getuid ());
601
#endif /* SET_EMACS_PRIORITY */
Jim Blandy's avatar
Jim Blandy committed
602

603
#ifdef EXTRA_INITIALIZE
604
  EXTRA_INITIALIZE;
605 606
#endif

Jim Blandy's avatar
Jim Blandy committed
607 608
  inhibit_window_system = 0;

Jim Blandy's avatar
Jim Blandy committed
609
  /* Handle the -t switch, which specifies filename to use as terminal */
Karl Heuer's avatar
Karl Heuer committed
610 611
  {
    char *term;
612
    if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
      {
	int result;
	close (0);
	close (1);
	result = open (term, O_RDWR, 2 );
	if (result < 0)
	  {
	    char *errstring = strerror (errno);
	    fprintf (stderr, "emacs: %s: %s\n", term, errstring);
	    exit (1);
	  }
	dup (0);
	if (! isatty (0))
	  {
	    fprintf (stderr, "emacs: %s: not a tty\n", term);
	    exit (1);
	  }
	fprintf (stderr, "Using %s\n", term);
631
#ifdef HAVE_WINDOW_SYSTEM
Karl Heuer's avatar
Karl Heuer committed
632
	inhibit_window_system = 1; /* -t => -nw */
Jim Blandy's avatar
Jim Blandy committed
633
#endif
Karl Heuer's avatar
Karl Heuer committed
634 635
      }
  }
636
  if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
637
    inhibit_window_system = 1;
Jim Blandy's avatar
Jim Blandy committed
638

Karl Heuer's avatar
Karl Heuer committed
639
  /* Handle the -batch switch, which means don't do interactive display.  */
Jim Blandy's avatar
Jim Blandy committed
640
  noninteractive = 0;
641
  if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
642 643 644
    noninteractive = 1;

  /* Handle the --help option, which gives a usage message..  */
645
  if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
646
    {
Karl Heuer's avatar
Karl Heuer committed
647 648 649
      printf ("\
Usage: %s [-t term] [--terminal term]  [-nw] [--no-windows]  [--batch]\n\
      [-q] [--no-init-file]  [-u user] [--user user]  [--debug-init]\n\
Karl Heuer's avatar
Karl Heuer committed
650
      [--version] [--no-site-file]\n\
Karl Heuer's avatar
Karl Heuer committed
651
      [-f func] [--funcall func]  [-l file] [--load file]  [--insert file]\n\
652 653 654
      [+linenum] file-to-visit  [--kill]\n\
Report bugs to bug-gnu-emacs@prep.ai.mit.edu.  First, please see\n\
the Bugs section of the Emacs manual or the file BUGS.", argv[0]);
Karl Heuer's avatar
Karl Heuer committed
655
      exit (0);
Jim Blandy's avatar
Jim Blandy committed
656 657
    }

658 659 660 661 662 663
#ifdef HAVE_X_WINDOWS
  /* Stupid kludge to catch command-line display spec.  We can't
     handle this argument entirely in window system dependent code
     because we don't even know which window system dependent code
     to run until we've recognized this argument.  */
  {
664
    char *displayname = 0;
665 666 667
    int i;
    int count_before = skip_args;

668
    if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
669
      display_arg = 1;
670
    else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689
      display_arg = 1;

    /* If we have the form --display=NAME,
       convert it into  -d name.
       This requires inserting a new element into argv.  */
    if (displayname != 0 && skip_args - count_before == 1)
      {
	char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
	int j;

	for (j = 0; j < count_before + 1; j++)
	  new[j] = argv[j];
	new[count_before + 1] = "-d";
	new[count_before + 2] = displayname;
	for (j = count_before + 2; j <argc; j++)
	  new[j + 1] = argv[j];
	argv = new;
	argc++;
      }
690 691 692
    /* Change --display to -d, when its arg is separate.  */
    else if (displayname != 0 && skip_args > count_before
	     && argv[count_before + 1][1] == '-')
693
      argv[count_before + 1] = "-d";
694 695 696 697 698 699

    /* Don't actually discard this arg.  */
    skip_args = count_before;
  }
#endif

700 701 702 703 704 705 706 707 708 709 710 711 712 713 714
  if (! noninteractive)
    {
#ifdef BSD_PGRPS
      if (initialized)
	{
	  inherited_pgroup = EMACS_GETPGRP (0);
	  setpgrp (0, getpid ());
	}
#else
#if defined (USG5) && defined (INTERRUPT_INPUT)
      setpgrp ();
#endif
#endif
    }

Jim Blandy's avatar
Jim Blandy committed
715 716 717 718
#ifdef POSIX_SIGNALS
  init_signals ();
#endif

719 720 721 722 723 724 725
  /* Don't catch SIGHUP if dumping.  */
  if (1
#ifndef CANNOT_DUMP
      && initialized
#endif
      )
    {
726
      sigblock (sigmask (SIGHUP));
727 728 729 730 731
      /* In --batch mode, don't catch SIGHUP if already ignored.
	 That makes nohup work.  */
      if (! noninteractive
	  || signal (SIGHUP, SIG_IGN) != SIG_IGN)
	signal (SIGHUP, fatal_error_signal);
732
      sigunblock (sigmask (SIGHUP));
733 734
    }

Jim Blandy's avatar
Jim Blandy committed
735 736 737 738 739 740 741 742
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
743
      /* Don't catch these signals in batch mode if dumping.
Jim Blandy's avatar
Jim Blandy committed
744 745 746 747 748
	 On some machines, this sets static data that would make
	 signal fail to work right when the dumped Emacs is run.  */
      signal (SIGQUIT, fatal_error_signal);
      signal (SIGILL, fatal_error_signal);
      signal (SIGTRAP, fatal_error_signal);
749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
#ifdef SIGABRT
      signal (SIGABRT, fatal_error_signal);
#endif
#ifdef SIGHWE
      signal (SIGHWE, fatal_error_signal);
#endif
#ifdef SIGPRE
      signal (SIGPRE, fatal_error_signal);
#endif
#ifdef SIGORE
      signal (SIGORE, fatal_error_signal);
#endif
#ifdef SIGUME
      signal (SIGUME, fatal_error_signal);
#endif
#ifdef SIGDLK
      signal (SIGDLK, fatal_error_signal);
#endif
#ifdef SIGCPULIM
      signal (SIGCPULIM, fatal_error_signal);
#endif
770 771
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
772
      signal (SIGIOT, fatal_error_signal);
773
#endif
Jim Blandy's avatar
Jim Blandy committed
774 775 776 777
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
778
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
779
      signal (SIGBUS, fatal_error_signal);
780
#endif
Jim Blandy's avatar
Jim Blandy committed
781
      signal (SIGSEGV, fatal_error_signal);
782
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
783
      signal (SIGSYS, fatal_error_signal);
784
#endif
Jim Blandy's avatar
Jim Blandy committed
785 786 787 788 789 790 791 792
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

793 794 795 796 797
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
798
#ifdef AIX
799 800
/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU.  */
      signal (SIGXCPU, fatal_error_signal);
801
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
802
      signal (SIGIOINT, fatal_error_signal);
803
#endif
Jim Blandy's avatar
Jim Blandy committed
804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831
      signal (SIGGRANT, fatal_error_signal);
      signal (SIGRETRACT, fatal_error_signal);
      signal (SIGSOUND, fatal_error_signal);
      signal (SIGMSG, fatal_error_signal);
#endif /* AIX */
    }

  noninteractive1 = noninteractive;

/* Perform basic initializations (not merely interning symbols) */

  if (!initialized)
    {
      init_alloc_once ();
      init_obarray ();
      init_eval_once ();
      init_syntax_once ();	/* Create standard syntax table.  */
		      /* Must be done before init_buffer */
      init_casetab_once ();
      init_buffer_once ();	/* Create buffer table and some buffers */
      init_minibuf_once ();	/* Create list of minibuffers */
			      /* Must precede init_window_once */
      init_window_once ();	/* Init the window system */
    }

  init_alloc ();
  init_eval ();
  init_data ();
832
  running_asynch_code = 0;
833

834 835 836 837
#ifdef MSDOS
  /* Call early 'cause init_environment needs it.  */
  init_dosfns ();
  /* Set defaults for several environment variables.  */
838 839 840
  if (initialized)
    init_environment (argc, argv, skip_args);
  else
841
    tzset ();
842
#endif /* MSDOS */
843

844 845 846
#ifdef WINDOWSNT
  /* Initialize environment from registry settings.  */
  init_environment ();
847
  init_ntproc ();	/* must precede init_editfns */
848 849
#endif

850 851 852 853
  /* egetenv is a pretty low-level facility, which may get called in
     many circumstances; it seems flimsy to put off initializing it
     until calling init_callproc.  */
  set_process_environment ();
854 855 856 857 858 859
  /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
     if this is not done.  Do it after set_process_environment so that we
     don't pollute Vprocess_environment.  */
#ifdef AIX
  putenv ("LANG=C");
#endif
860

861 862
  init_buffer ();	/* Init default directory of main buffer */

863
  init_callproc_1 ();	/* Must precede init_cmdargs and init_sys_modes.  */
864
  init_cmdargs (argc, argv, skip_args);	/* Must precede init_lread.  */
865 866 867 868 869 870 871 872 873 874 875

  if (initialized)
    {
      /* Erase any pre-dump messages in the message log, to avoid confusion */
      Lisp_Object old_log_max;
      old_log_max = Vmessage_log_max;
      XSETFASTINT (Vmessage_log_max, 0);
      message_dolog ("", 0, 1);
      Vmessage_log_max = old_log_max;
    }

876
  init_callproc ();	/* Must follow init_cmdargs but not init_sys_modes.  */
Jim Blandy's avatar
Jim Blandy committed
877
  init_lread ();
Jim Blandy's avatar
Jim Blandy committed
878 879 880 881

  if (!noninteractive)
    {
#ifdef VMS
Jim Blandy's avatar
Jim Blandy committed
882
      init_vms_input ();/* init_display calls get_frame_size, that needs this */
Jim Blandy's avatar
Jim Blandy committed
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900
#endif /* VMS */
      init_display ();	/* Determine terminal type.  init_sys_modes uses results */
    }
  init_keyboard ();	/* This too must precede init_sys_modes */
#ifdef VMS
  init_vmsproc ();	/* And this too. */
#endif /* VMS */
  init_sys_modes ();	/* Init system terminal modes (RAW or CBREAK, etc.) */
  init_xdisp ();
  init_macros ();
  init_editfns ();
#ifdef LISP_FLOAT_TYPE
  init_floatfns ();
#endif
#ifdef VMS
  init_vmsfns ();
#endif /* VMS */
  init_process ();
Jim Blandy's avatar
Jim Blandy committed
901 902 903
#ifdef CLASH_DETECTION
  init_filelock ();
#endif /* CLASH_DETECTION */
Jim Blandy's avatar
Jim Blandy committed
904 905 906 907 908 909 910 911 912 913

/* Intern the names of all standard functions and variables; define standard keys */

  if (!initialized)
    {
      /* The basic levels of Lisp must come first */
      /* And data must come first of all
	 for the sake of symbols like error-message */
      syms_of_data ();
      syms_of_alloc ();
Jim Blandy's avatar
Jim Blandy committed
914
      syms_of_lread ();
Jim Blandy's avatar
Jim Blandy committed
915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947
      syms_of_print ();
      syms_of_eval ();
      syms_of_fns ();
      syms_of_floatfns ();

      syms_of_abbrev ();
      syms_of_buffer ();
      syms_of_bytecode ();
      syms_of_callint ();
      syms_of_casefiddle ();
      syms_of_casetab ();
      syms_of_callproc ();
      syms_of_cmds ();
#ifndef NO_DIR_LIBRARY
      syms_of_dired ();
#endif /* not NO_DIR_LIBRARY */
      syms_of_display ();
      syms_of_doc ();
      syms_of_editfns ();
      syms_of_emacs ();
      syms_of_fileio ();
#ifdef CLASH_DETECTION
      syms_of_filelock ();
#endif /* CLASH_DETECTION */
      syms_of_indent ();
      syms_of_keyboard ();
      syms_of_keymap ();
      syms_of_macros ();
      syms_of_marker ();
      syms_of_minibuf ();
      syms_of_mocklisp ();
      syms_of_process ();
      syms_of_search ();
Jim Blandy's avatar
Jim Blandy committed
948
      syms_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
949
      syms_of_syntax ();
Karl Heuer's avatar
Karl Heuer committed
950
      syms_of_term ();
Jim Blandy's avatar
Jim Blandy committed
951
      syms_of_undo ();
Joseph Arceneaux's avatar
Joseph Arceneaux committed
952 953 954

      /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
      syms_of_textprop ();
Jim Blandy's avatar
Jim Blandy committed
955 956 957
#ifdef VMS
      syms_of_vmsproc ();
#endif /* VMS */
958 959 960
#ifdef WINDOWSNT
      syms_of_ntproc ();
#endif /* WINDOWSNT */
Jim Blandy's avatar
Jim Blandy committed
961 962 963
      syms_of_window ();
      syms_of_xdisp ();
#ifdef HAVE_X_WINDOWS
Jim Blandy's avatar
Jim Blandy committed
964
      syms_of_xterm ();
Jim Blandy's avatar
Jim Blandy committed
965
      syms_of_xfns ();
966
      syms_of_xfaces ();
Jim Blandy's avatar
Jim Blandy committed
967 968 969
#ifdef HAVE_X11
      syms_of_xselect ();
#endif
Jim Blandy's avatar
Jim Blandy committed
970 971
#endif /* HAVE_X_WINDOWS */

Morten Welinder's avatar
Morten Welinder committed
972 973 974 975
#if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
      syms_of_xfaces ();
#endif

976
#ifndef HAVE_NTGUI
977
      syms_of_xmenu ();
978
#endif
979

980 981 982 983 984 985 986 987
#ifdef HAVE_NTGUI
      syms_of_win32term ();
      syms_of_win32fns ();
      syms_of_win32faces ();
      syms_of_win32select ();
      syms_of_win32menu ();
#endif /* HAVE_NTGUI */

Jim Blandy's avatar
Jim Blandy committed
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003
#ifdef SYMS_SYSTEM
      SYMS_SYSTEM;
#endif

#ifdef SYMS_MACHINE
      SYMS_MACHINE;
#endif

      keys_of_casefiddle ();
      keys_of_cmds ();
      keys_of_buffer ();
      keys_of_keyboard ();
      keys_of_keymap ();
      keys_of_macros ();
      keys_of_minibuf ();
      keys_of_window ();
1004
      keys_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
1005 1006 1007 1008
    }

  if (!initialized)
    {
Karl Heuer's avatar
Karl Heuer committed
1009
      char *file;
Jim Blandy's avatar
Jim Blandy committed
1010
      /* Handle -l loadup-and-dump, args passed by Makefile. */
1011
      if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
1012
	Vtop_level = Fcons (intern ("load"),
Karl Heuer's avatar
Karl Heuer committed
1013
			    Fcons (build_string (file), Qnil));
Jim Blandy's avatar
Jim Blandy committed
1014 1015
#ifdef CANNOT_DUMP
      /* Unless next switch is -nl, load "loadup.el" first thing.  */
1016
      if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
1017 1018 1019 1020 1021
	Vtop_level = Fcons (intern ("load"),
			    Fcons (build_string ("loadup.el"), Qnil));
#endif /* CANNOT_DUMP */
    }

1022 1023
  if (initialized)
    {
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
#ifdef HAVE_TZSET
      {
	/* If the execution TZ happens to be the same as the dump TZ,
	   change it to some other value and then change it back,
	   to force the underlying implementation to reload the TZ info.
	   This is needed on implementations that load TZ info from files,
	   since the TZ file contents may differ between dump and execution.  */
	char *tz = getenv ("TZ");
	if (tz && !strcmp (tz, dump_tz))
	  {
	    ++*tz;
	    tzset ();
	    --*tz;
	  }
      }
#endif
1040 1041
    }

Jim Blandy's avatar
Jim Blandy committed
1042 1043
  initialized = 1;

1044 1045
#ifdef LOCALTIME_CACHE
  /* Some versions of localtime have a bug.  They cache the value of the time
Jim Blandy's avatar
Jim Blandy committed
1046 1047
     zone rather than looking it up every time.  Since localtime() is
     called to bolt the undumping time into the undumped emacs, this
1048 1049 1050
     results in localtime ignoring the TZ environment variable.
     This flushes the new TZ value into localtime. */
  tzset ();
1051
#endif /* defined (LOCALTIME_CACHE) */
Jim Blandy's avatar
Jim Blandy committed
1052

Jim Blandy's avatar
Jim Blandy committed
1053 1054 1055 1056 1057
  /* Enter editor command loop.  This never returns.  */
  Frecursive_edit ();
  /* NOTREACHED */
}

1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
/* Sort the args so we can find the most important ones
   at the beginning of argv.  */

/* First, here's a table of all the standard options.  */

struct standard_args
{
  char *name;
  char *longname;
  int priority;
  int nargs;
};

struct standard_args standard_args[] =
{
1073 1074
  { "-version", "--version", 110, 0 },
  { "-help", "--help", 110, 0 },
1075
  { "-nl", "--no-shared-memory", 100, 0 },
1076
#ifdef VMS
1077
  { "-map", "--map-data", 100, 0 },
1078
#endif
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
  { "-t", "--terminal", 90, 1 },
  { "-d", "--display", 80, 1 },
  { "-display", 0, 80, 1 },
  { "-nw", "--no-windows", 70, 0 },
  { "-batch", "--batch", 60, 0 },
  { "-q", "--no-init-file", 50, 0 },
  { "-no-init-file", 0, 50, 0 },
  { "-no-site-file", "--no-site-file", 40, 0 },
  { "-u", "--user", 30, 1 },
  { "-user", 0, 30, 1 },
  { "-debug-init", "--debug-init", 20, 0 },
1090 1091
  { "-i", "--icon-type", 15, 0 },
  { "-itype", 0, 15, 0 },
1092
  { "-iconic", "--iconic", 15, 0 },
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
  { "-bg", "--background-color", 10, 1 },
  { "-background", 0, 10, 1 },
  { "-fg", "--foreground-color", 10, 1 },
  { "-foreground", 0, 10, 1 },
  { "-bd", "--border-color", 10, 1 },
  { "-bw", "--border-width", 10, 1 },
  { "-ib", "--internal-border", 10, 1 },
  { "-ms", "--mouse-color", 10, 1 },
  { "-cr", "--cursor-color", 10, 1 },
  { "-fn", "--font", 10, 1 },
  { "-font", 0, 10, 1 },
  { "-g", "--geometry", 10, 1 },
  { "-geometry", 0, 10, 1 },
  { "-T", "--title", 10, 1 },
1107
  { "-title", 0, 10, 1 },
1108 1109
  { "-name", "--name", 10, 1 },
  { "-xrm", "--xrm", 10, 1 },
1110 1111 1112
  { "-r", "--reverse-video", 5, 0 },
  { "-rv", 0, 5, 0 },
  { "-reverse", 0, 5, 0 },
1113
  { "-hb", "--horizontal-scroll-bars", 5, 0 },
1114 1115 1116
  { "-vb", "--vertical-scroll-bars", 5, 0 },
  /* These have the same priority as ordinary file name args,
     so they are not reordered with respect to those.  */
1117 1118
  { "-L", "--directory", 0, 1 },
  { "-directory", 0, 0, 1 },
1119 1120 1121 1122
  { "-l", "--load", 0, 1 },
  { "-load", 0, 0, 1 },
  { "-f", "--funcall", 0, 1 },
  { "-funcall", 0, 0, 1 },
1123
  { "-eval", "--eval", 0, 1 },
1124
  { "-insert", "--insert", 0, 1 },
1125
  /* This should be processed after ordinary file name args and the like.  */
1126
  { "-kill", "--kill", -10, 0 },
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
};

/* Reorder the elements of ARGV (assumed to have ARGC elements)
   so that the highest priority ones come first.
   Do not change the order of elements of equal priority.
   If an option takes an argument, keep it and its argument together.  */

static void
sort_args (argc, argv)
     int argc;
     char **argv;
{
  char **new = (char **) xmalloc (sizeof (char *) * argc);
  /* For each element of argv,
     the corresponding element of options is:
     0 for an option that takes no arguments,
     1 for an option that takes one argument, etc.
     -1 for an ordinary non-option argument.  */
1145
  int *options = (int *) xmalloc (sizeof (int) * argc);
1146 1147 1148 1149
  int *priority = (int *) xmalloc (sizeof (int) * argc);
  int to = 1;
  int from;
  int i;
1150
  int end_of_options = argc;
1151 1152 1153 1154 1155 1156

  /* Categorize all the options,
     and figure out which argv elts are option arguments.  */
  for (from = 1; from < argc; from++)
    {
      options[from] = -1;
1157
      priority[from] = 0;
1158 1159 1160 1161 1162
      if (argv[from][0] == '-')
	{
	  int match, thislen;
	  char *equals;

1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175
	  /* If we have found "--", don't consider
	     any more arguments as options.  */
	  if (argv[from][1] == '-')
	    {
	      /* Leave the "--", and everything following it, at the end.  */
	      for (; from < argc; from++)
		{
		  priority[from] = -100;
		  options[from] = -1;
		}
	      break;
	    }

1176 1177 1178 1179 1180 1181
	  /* Look for a match with a known old-fashioned option.  */
	  for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
	    if (!strcmp (argv[from], standard_args[i].name))
	      {
		options[from] = standard_args[i].nargs;
		priority[from] = standard_args[i].priority;
1182 1183
		if (from + standard_args[i].nargs >= argc)
		  fatal ("Option `%s' requires an argument\n", argv[from]);
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
		from += standard_args[i].nargs;
		goto done;
	      }

	  /* Look for a match with a known long option.
	     MATCH is -1 if no match so far, -2 if two or more matches so far,
	     >= 0 (the table index of the match) if just one match so far.  */
	  if (argv[from][1] == '-')
	    {
	      match = -1;
	      thislen = strlen (argv[from]);
	      equals = index (argv[from], '=');
	      if (equals != 0)
		thislen = equals - argv[from];

1199 1200 1201 1202 1203
	      for (i = 0;
		   i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
		if (standard_args[i].longname
		    && !strncmp (argv[from], standard_args[i].longname,
				 thislen))
1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
		  {
		    if (match == -1)
		      match = i;
		    else
		      match = -2;
		  }

	      /* If we found exactly one match, use that.  */
	      if (match >= 0)
		{
		  options[from] = standard_args[match].nargs;
		  priority[from] = standard_args[match].priority;
		  /* If --OPTION=VALUE syntax is used,
		     this option uses just one argv element.  */
		  if (equals != 0)
		    options[from] = 0;
1220 1221
		  if (from + options[from] >= argc)
		    fatal ("Option `%s' requires an argument\n", argv[from]);
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
		  from += options[from];
		}
	    }
	done: ;
	}
    }

  /* Copy the arguments, in order of decreasing priority, to NEW.  */
  new[0] = argv[0];
  while (to < argc)
    {
      int best = -1;
1234
      int best_priority = -9999;
1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263

      /* Find the highest priority remaining option.
	 If several have equal priority, take the first of them.  */
      for (from = 1; from < argc; from++)
	{
	  if (argv[from] != 0 && priority[from] > best_priority)
	    {
	      best_priority = priority[from];
	      best = from;
	    }
	  /* Skip option arguments--they are tied to the options.  */
	  if (options[from] > 0)
	    from += options[from];
	}
	    
      if (best < 0)
	abort ();

      /* Copy the highest priority remaining option, with its args, to NEW.  */
      new[to++] = argv[best];
      for (i = 0; i < options[best]; i++)
	new[to++] = argv[best + i + 1];

      /* Clear out this option in ARGV.  */
      argv[best] = 0;
      for (i = 0; i < options[best]; i++)
	argv[best + i + 1] = 0;
    }

1264
  bcopy (new, argv, sizeof (char *) * argc);
1265 1266
}

Jim Blandy's avatar
Jim Blandy committed
1267
DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1268
  "Exit the Emacs job and kill it.\n\
Jim Blandy's avatar
Jim Blandy committed
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
If ARG is an integer, return ARG as the exit program code.\n\
If ARG is a  string, stuff it as keyboard input.\n\n\
The value of `kill-emacs-hook', if not void,\n\
is a list of functions (of no args),\n\
all of which are called before Emacs is actually killed.")
  (arg)
     Lisp_Object arg;
{
  Lisp_Object hook, hook1;
  int i;
  struct gcpro gcpro1;

  GCPRO1 (arg);

  if (feof (stdin))
    arg = Qt;

Jim Blandy's avatar
Jim Blandy committed
1286
  if (!NILP (Vrun_hooks) && !noninteractive)
Jim Blandy's avatar
Jim Blandy committed
1287 1288 1289 1290 1291 1292 1293 1294 1295
    call1 (Vrun_hooks, intern ("kill-emacs-hook"));

  UNGCPRO;

/* Is it really necessary to do this deassign
   when we are going to exit anyway?  */
/* #ifdef VMS
  stop_vms_input ();
 #endif  */
1296

1297
  shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
1298

1299 1300 1301 1302 1303 1304
  /* If we have an auto-save list file,
     kill it because we are exiting Emacs deliberately (not crashing).
     Do it after shut_down_emacs, which does an auto-save.  */
  if (STRINGP (Vauto_save_list_file_name))
    unlink (XSTRING (Vauto_save_list_file_name)->data);

1305
  exit (INTEGERP (arg) ? XINT (arg)
Jim Blandy's avatar
Jim Blandy committed
1306 1307 1308 1309 1310 1311 1312 1313
#ifdef VMS
	: 1
#else
	: 0
#endif
	);
  /* NOTREACHED */
}
1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325


/* Perform an orderly shutdown of Emacs.  Autosave any modified
   buffers, kill any child processes, clean up the terminal modes (if
   we're in the foreground), and other stuff like that.  Don't perform
   any redisplay; this may be called when Emacs is shutting down in
   the background, or after its X connection has died.

   If SIG is a signal number, print a message for it.

   This is called by fatal signal handlers, X protocol error handlers,
   and Fkill_emacs.  */
1326

1327
void
1328
shut_down_emacs (sig, no_x, stuff)
1329
     int sig, no_x;
1330
     Lisp_Object stuff;
1331
{
1332 1333 1334
  /* Prevent running of hooks from now on.  */
  Vrun_hooks = Qnil;

1335 1336 1337
  /* If we are controlling the terminal, reset terminal modes */
#ifdef EMACS_HAVE_TTY_PGRP
  {
1338 1339
    int pgrp = EMACS_GETPGRP (0);

1340 1341
    int tpgrp;
    if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
1342
	&& tpgrp == pgrp)
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
      {
	fflush (stdout);
	reset_sys_modes ();
	if (sig && sig != SIGTERM)
	  fprintf (stderr, "Fatal error (%d).", sig);
      }
  }
#else
  fflush (stdout);
  reset_sys_modes ();
#endif

1355 1356
  stuff_buffered_input (stuff);

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367
  kill_buffer_processes (Qnil);
  Fdo_auto_save (Qt, Qnil);

#ifdef CLASH_DETECTION
  unlock_all_files ();
#endif

#ifdef VMS
  kill_vms_processes ();
#endif

1368
#if 0 /* This triggers a bug in XCloseDisplay and is not needed.  */
1369
#ifdef HAVE_X_WINDOWS
1370 1371 1372 1373 1374
  /* It's not safe to call intern here.  Maybe we are crashing.  */
  if (!noninteractive && SYMBOLP (Vwindow_system)
      && XSYMBOL (Vwindow_system)->name->size == 1
      && XSYMBOL (Vwindow_system)->name->data[0] == 'x'
      && ! no_x)
1375 1376
    Fx_close_current_connection ();
#endif /* HAVE_X_WINDOWS */
1377
#endif
1378

1379 1380 1381 1382 1383 1384
#ifdef SIGIO
  /* There is a tendency for a SIGIO signal to arrive within exit,
     and cause a SIGHUP because the input descriptor is already closed.  */
  unrequest_sigio ();
  signal (SIGIO, SIG_IGN);
#endif
1385 1386 1387 1388

#ifdef WINDOWSNT
  term_ntproc ();
#endif
1389 1390 1391
}


Jim Blandy's avatar
Jim Blandy committed
1392 1393 1394 1395 1396 1397 1398 1399

#ifndef CANNOT_DUMP

#ifdef HAVE_SHM

DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
  "Dump current state of Emacs into data file FILENAME.\n\
This function exists on systems that use HAVE_SHM.")
1400 1401
  (filename)
     Lisp_Object filename;
Jim Blandy's avatar
Jim Blandy committed
1402
{
1403
  extern char my_edata[];
Jim Blandy's avatar
Jim Blandy committed
1404 1405
  Lisp_Object tem;

1406 1407
  CHECK_STRING (filename, 0);
  filename = Fexpand_file_name (filename, Qnil);
Jim Blandy's avatar
Jim Blandy committed
1408 1409 1410 1411 1412 1413 1414 1415

  tem = Vpurify_flag;
  Vpurify_flag = Qnil;

  fflush (stdout);
  /* Tell malloc where start of impure now is */
  /* Also arrange for warnings when nearly out of space.  */
#ifndef SYSTEM_MALLOC
1416
  memory_warnings (my_edata, malloc_warning);
Jim Blandy's avatar
Jim Blandy committed
1417
#endif
1418
  map_out_data (XSTRING (filename)->data);
Jim Blandy's avatar
Jim Blandy committed
1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434

  Vpurify_flag = tem;

  return Qnil;
}

#else /* not HAVE_SHM */

DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
  "Dump current state of Emacs into executable file FILENAME.\n\
Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
This is used in the file `loadup.el' when building Emacs.\n\
\n\
Bind `command-line-processed' to nil before dumping,\n\
if you want the dumped Emacs to process its command line\n\
and announce itself normally when it is run.")
1435 1436
  (filename, symfile)
     Lisp_Object filename, symfile;
Jim Blandy's avatar
Jim Blandy committed
1437
{
1438
  extern char my_edata[];
Jim Blandy's avatar
Jim Blandy committed
1439 1440
  Lisp_Object tem;

1441 1442 1443
  CHECK_STRING (filename, 0);
  filename = Fexpand_file_name (filename, Qnil);
  if (!NILP (symfile))
Jim Blandy's avatar
Jim Blandy committed
1444
    {
1445 1446 1447
      CHECK_STRING (symfile, 0);
      if (XSTRING (symfile)->size)
	symfile = Fexpand_file_name (symfile, Qnil);
Jim Blandy's avatar
Jim Blandy committed
1448 1449 1450 1451 1452
    }

  tem = Vpurify_flag;
  Vpurify_flag = Qnil;

1453 1454 1455 1456 1457 1458 1459 1460
#ifdef HAVE_TZSET
  set_time_zone_rule (dump_tz);
#ifndef LOCALTIME_CACHE
  /* Force a tz reload, since set_time_zone_rule doesn't.  */
  tzset ();
#endif
#endif

Jim Blandy's avatar
Jim Blandy committed
1461 1462
  fflush (stdout);
#ifdef VMS
1463
  mapout_data (XSTRING (filename)->data);
Jim Blandy's avatar
Jim Blandy committed
1464 1465 1466 1467
#else
  /* Tell malloc where start of impure now is */
  /* Also arrange for warnings when nearly out of space.  */
#ifndef SYSTEM_MALLOC
1468 1469 1470
#ifndef WINDOWSNT
  /* On Windows, this was done before dumping, and that once suffices.
     Meanwhile, my_edata is not valid on Windows.  */
Richard M. Stallman's avatar