emacs.c 58.8 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Fully extensible Emacs, running on Unix, intended for GNU.
2
   Copyright (C) 1985,86,87,93,94,95,97,98,1999 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
#include <config.h>
Jim Blandy's avatar
Jim Blandy committed
23 24 25 26 27 28 29 30 31 32 33
#include <signal.h>
#include <errno.h>
#include <stdio.h>

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

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

34 35 36 37
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

38
#ifdef BSD_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
39 40 41 42 43
#include <sys/ioctl.h>
#endif

#include "lisp.h"
#include "commands.h"
Joseph Arceneaux's avatar
Joseph Arceneaux committed
44
#include "intervals.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
45
#include "buffer.h"
Jim Blandy's avatar
Jim Blandy committed
46

47
#include "systty.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
48
#include "blockinput.h"
49
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
50
#include "process.h"
51
#include "termhooks.h"
Andreas Schwab's avatar
Andreas Schwab committed
52
#include "keyboard.h"
Jim Blandy's avatar
Jim Blandy committed
53

54 55 56 57
#ifdef HAVE_SETLOCALE
#include <locale.h>
#endif

58 59 60 61 62
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
#include <sys/resource.h>
#endif

Jim Blandy's avatar
Jim Blandy committed
63 64 65 66
#ifndef O_RDWR
#define O_RDWR 2
#endif

67
extern void malloc_warning ();
68
extern void set_time_zone_rule ();
69 70
extern char *index ();

71 72 73 74 75 76 77 78 79 80
/* Make these values available in GDB, which doesn't see macros.  */

EMACS_INT gdb_valbits = VALBITS;
EMACS_INT gdb_gctypebits = GCTYPEBITS;
EMACS_INT gdb_emacs_intbits = sizeof (EMACS_INT) * BITS_PER_CHAR;
#ifdef DATA_SEG_BITS
EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
#else
EMACS_INT  gdb_data_seg_bits = 0;
#endif
Gerd Moellmann's avatar
Gerd Moellmann committed
81
EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
82

Jim Blandy's avatar
Jim Blandy committed
83 84 85
/* Command line args from shell, as list of strings */
Lisp_Object Vcommand_line_args;

86 87 88 89
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

90 91 92
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

93 94 95 96
/* 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
97 98 99
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

100 101 102 103 104 105 106 107
#ifdef SIGUSR1
/* Hooks for signal USR1 and USR2 handing */
Lisp_Object Vsignal_USR1_hook;
#ifdef SIGUSR2
Lisp_Object Vsignal_USR2_hook;
#endif 
#endif

108 109 110
/* Search path separator.  */
Lisp_Object Vpath_separator;

Jim Blandy's avatar
Jim Blandy committed
111 112 113 114 115
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

116 117 118 119 120 121 122 123
#ifdef DOUG_LEA_MALLOC
/* Preserves a pointer to the memory allocated that copies that
   static data inside glibc's malloc.  */
void *malloc_state_ptr;
/* From glibc, a routine that returns a copy of the malloc internal state.  */
extern void *malloc_get_state ();
/* From glibc, a routine that overwrites the malloc internal state.  */
extern void malloc_set_state ();
124 125 126
/* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
   dumping.  Used to work around a bug in glibc's malloc.  */
int malloc_using_checking;
127 128
#endif

129
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
130
Lisp_Object Vsystem_type;
131 132 133

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
134 135 136 137 138

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

139 140
Lisp_Object Qfile_name_handler_alist;

141
/* Current and previous system locales for messages and time.  */
142 143 144 145
Lisp_Object Vsystem_messages_locale;
Lisp_Object Vprevious_system_messages_locale;
Lisp_Object Vsystem_time_locale;
Lisp_Object Vprevious_system_time_locale;
146

Jim Blandy's avatar
Jim Blandy committed
147 148 149 150
/* 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;

151 152 153
/* 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.  */
154 155
int emacs_priority;

156 157 158 159
/* 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;

160
#ifdef BSD_PGRPS
161 162 163 164
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
165 166 167 168 169 170 171 172 173
#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;

174
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
175
extern Lisp_Object Vwindow_system;
176
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
177

178 179
extern Lisp_Object Vauto_save_list_file_name;

Jim Blandy's avatar
Jim Blandy committed
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
#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;
196 197 198 199

/* Save argv and argc.  */
char **initial_argv;
int initial_argc;
200 201

static void sort_args ();
Andreas Schwab's avatar
Andreas Schwab committed
202
void syms_of_emacs ();
Gerd Moellmann's avatar
Gerd Moellmann committed
203

204
#define USAGE1 "\
Gerd Moellmann's avatar
Gerd Moellmann committed
205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241
Usage: %s [OPTION-OR-FILENAME]...\n\
\n\
Run Emacs, the extensible, customizable, self-documenting real-time\n\
display editor.  The recommended way to start Emacs for normal editing\n\
is with no options at all.\n\
\n\
Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
read the main documentation for these command-line arguments.\n\
\n\
Initialization options:\n\
\n\
--batch			do not do interactive display; implies -q\n\
--debug-init		enable Emacs Lisp debugger during init file\n\
--help			display this help message and exit\n\
--multibyte, --no-unibyte   run Emacs in multibyte mode\n\
--no-init-file, -q	    load neither ~/.emacs nor default.el\n\
--no-shared-memory, -nl	    do not use shared memory\n\
--no-site-file		    do not load site-start.el\n\
--no-windows, -nw	    don't communicate with X, ignoring $DISPLAY\n\
--terminal, -t DEVICE	    use DEVICE for terminal I/O\n\
--unibyte, --no-multibyte   run Emacs in unibyte mode\n\
--user, -u USER		load ~USER/.emacs instead of your own\n\
--version		display version information and exit\n\
\n\
Action options:\n\
\n\
FILE			visit FILE using find-file\n\
+LINENUM FILE		visit FILE using find-file, then go to line LINENUM\n\
--directory, -L DIR	add DIR to variable load-path\n\
--eval EXPR		evaluate Emacs Lisp expression EXPR\n\
--execute EXPR		evaluate Emacs Lisp expression EXPR\n\
--find-file FILE	visit FILE\n\
--funcall, -f FUNC	call Emacs function FUNC with no arguments\n\
--insert FILE		insert contents of FILE into current buffer\n\
--kill			exit without asking for confirmation\n\
--load, -l FILE		load FILE of Emacs Lisp code using the load function\n\
--visit FILE		visit FILE\n\
242 243 244
\n"

#define USAGE2 "\
245
Display options:\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274
\n\
--background-color, -bg COLOR	window background color\n\
--border-color, -bd COLOR	main border color\n\
--border-width, -bw WIDTH	width of main border\n\
--cursor-color, -cr COLOR	color of the Emacs cursor indicating point\n\
--display, -d DISPLAY		use X server DISPLAY\n\
--font, -fn FONT		default font; must be fixed-widthp\n\
--foreground-color, -fg COLOR	window foreground color\n\
--geometry, -g GEOMETRY		window geometry\n\
--iconic			start Emacs in iconified state\n\
--icon-type, -i			use picture of gnu for Emacs icon\n\
--internal-border, -ib WIDTH	width between text and main border\n\
--mouse-color, -ms COLOR 	mouse cursor color in Emacs window\n\
--name NAME			title of main Emacs window\n\
--reverse-video, -r, -rv	switch foreground and background\n\
--title, -T, -wn, TITLE		title for Emacs windows\n\
--vertical-scroll-bars, -vb	enable vertical scroll bars\n\
--xrm XRESOURCES		set additional X resources\n\
\n\
You can generally also specify long option names with a single -; for\n\
example, -batch as well as --batch.  You can use any unambiguous\n\
abbreviation for a --option.\n\
\n\
Various environment variables and window system resources also affect\n\
Emacs' operation.  See the main documentation.\n\
\n\
Report bugs to bug-gnu-emacs@gnu.org.  First, please see the Bugs\n\
section of the Emacs manual or the file BUGS.\n"

Jim Blandy's avatar
Jim Blandy committed
275 276 277 278 279 280 281

/* 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;

282 283 284 285 286
#ifdef SIGUSR1
SIGTYPE
handle_USR1_signal (sig)
     int sig;
{
287 288
  struct input_event buf;

289 290
  buf.kind = user_signal;
  buf.code = 0;
291
  buf.frame_or_window = selected_frame;
292 293 294 295
  buf.modifiers = 0;
  buf.timestamp = 0;

  kbd_buffer_store_event (&buf);
296
}
297
#endif /* SIGUSR1 */
Richard M. Stallman's avatar
Richard M. Stallman committed
298

299 300 301 302 303
#ifdef SIGUSR2
SIGTYPE
handle_USR2_signal (sig)
     int sig;
{
304 305
  struct input_event buf;

306 307
  buf.kind = user_signal;
  buf.code = 1;
308
  buf.frame_or_window = selected_frame;
309 310 311 312
  buf.modifiers = 0;
  buf.timestamp = 0;

  kbd_buffer_store_event (&buf);
313
}
314
#endif /* SIGUSR2 */
315

Jim Blandy's avatar
Jim Blandy committed
316
/* Handle bus errors, illegal instruction, etc. */
Jim Blandy's avatar
Jim Blandy committed
317
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
318 319 320 321 322 323
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

324 325
  TOTALLY_UNBLOCK_INPUT;

Jim Blandy's avatar
Jim Blandy committed
326
  /* If fatal error occurs in code below, avoid infinite recursion.  */
327 328 329
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
330

331
      shut_down_emacs (sig, 0, Qnil);
332
    }
Jim Blandy's avatar
Jim Blandy committed
333 334 335 336

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
337 338 339 340
  /* 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.  */
341
#ifndef MSDOS
342
  sigunblock (sigmask (fatal_error_code));
343
#endif
Jim Blandy's avatar
Jim Blandy committed
344 345 346
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
347 348 349

#ifdef SIGDANGER

Richard M. Stallman's avatar
Richard M. Stallman committed
350
/* Handler for SIGDANGER.  */
351 352 353 354 355 356 357
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
358 359 360

  /* It might be unsafe to call do_auto_save now.  */
  force_auto_save_soon ();
361 362
}
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
363 364

/* We define abort, rather than using it from the library,
Karl Heuer's avatar
Karl Heuer committed
365 366
   so that GDB can return from a breakpoint here.
   MSDOS has its own definition on msdos.c  */
Richard M. Stallman's avatar
Richard M. Stallman committed
367

368
#if ! defined (DOS_NT) && ! defined (NO_ABORT)
369 370 371 372 373 374

#ifndef ABORT_RETURN_TYPE
#define ABORT_RETURN_TYPE void
#endif

ABORT_RETURN_TYPE
Richard M. Stallman's avatar
Richard M. Stallman committed
375 376 377
abort ()
{
  kill (getpid (), SIGABRT);
378 379
  /* This shouldn't be executed, but it prevents a warning.  */
  exit (1);
Richard M. Stallman's avatar
Richard M. Stallman committed
380
}
Karl Heuer's avatar
Karl Heuer committed
381
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
382

Jim Blandy's avatar
Jim Blandy committed
383 384 385

/* Code for dealing with Lisp access to the Unix command line */

Andreas Schwab's avatar
Andreas Schwab committed
386
static void
Jim Blandy's avatar
Jim Blandy committed
387 388 389 390 391 392
init_cmdargs (argc, argv, skip_args)
     int argc;
     char **argv;
     int skip_args;
{
  register int i;
393 394 395
  Lisp_Object name, dir, tem;
  int count = specpdl_ptr - specpdl;
  Lisp_Object raw_name;
Jim Blandy's avatar
Jim Blandy committed
396

397 398 399
  initial_argv = argv;
  initial_argc = argc;

400 401 402 403 404 405 406 407 408 409 410
  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);

411 412 413 414 415 416
  /* 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
417
		       EXEC_SUFFIXES, &found, 1);
418
      if (yes == 1)
419 420 421 422 423 424 425 426
	{
	  /* 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);
	}
427
    }
428

429 430
  if (!NILP (Vinvocation_directory)
      && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
431 432
    /* Emacs was started with relative path, like ./emacs.
       Make it absolute.  */
433 434
    Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);

435 436 437 438 439 440 441 442
  Vinstallation_directory = Qnil;

  if (!NILP (Vinvocation_directory))
    {
      dir = Vinvocation_directory;
      name = Fexpand_file_name (Vinvocation_name, dir);
      while (1)
	{
443
	  Lisp_Object tem, lib_src_exists;
444 445
	  Lisp_Object etc_exists, info_exists;

446 447 448 449 450
	  /* 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);
451

452
#ifdef MSDOS
453 454 455 456 457
	  /* MSDOS installations frequently remove lib-src, but we still
	     must set installation-directory, or else info won't find
	     its files (it uses the value of installation-directory).  */
	  tem = Fexpand_file_name (build_string ("info"), dir);
	  info_exists = Ffile_exists_p (tem);
458 459 460
#else
	  info_exists = Qnil;
#endif
461 462

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
463
	    {
464 465 466
	      tem = Fexpand_file_name (build_string ("etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
467
		{
468 469 470
		  Vinstallation_directory
		    = Ffile_name_as_directory (dir);
		  break;
471 472 473 474
		}
	    }

	  /* See if dir's parent contains those subdirs.  */
475 476
	  tem = Fexpand_file_name (build_string ("../lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
477

478 479 480

#ifdef MSDOS
	  /* See the MSDOS commentary above.  */
481 482
	  tem = Fexpand_file_name (build_string ("../info"), dir);
	  info_exists = Ffile_exists_p (tem);
483 484 485
#else
	  info_exists = Qnil;
#endif
486 487

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
488
	    {
489 490 491
	      tem = Fexpand_file_name (build_string ("../etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
492
		{
493 494 495 496
		  tem = Fexpand_file_name (build_string (".."), dir);
		  Vinstallation_directory
		    = Ffile_name_as_directory (tem);
		  break;
497 498 499 500 501 502 503 504
		}
	    }

	  /* 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))
	    {
505
	      name = Fexpand_file_name (tem, dir);
506 507 508 509 510 511 512
	      dir = Ffile_name_directory (name);
	    }
	  else
	    break;
	}
    }

Jim Blandy's avatar
Jim Blandy committed
513 514 515 516 517 518 519 520
  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);
    }
521 522

  unbind_to (count, Qnil);
Jim Blandy's avatar
Jim Blandy committed
523
}
524 525 526 527 528 529 530 531 532

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);
}

533 534 535 536 537 538 539 540
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
541 542 543

#ifdef VMS
#ifdef LINK_CRTL_SHARE
544
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
545
extern noshare char **environ;
546
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
547 548 549
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

550 551 552 553 554 555
#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

556
#ifndef ORDINARY_LINK
557 558 559 560 561
/* 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__
562
#ifndef GCC_CTORS_IN_LIBC
Andreas Schwab's avatar
Andreas Schwab committed
563
void __do_global_ctors ()
564
{}
Andreas Schwab's avatar
Andreas Schwab committed
565
void __do_global_ctors_aux ()
566
{}
Andreas Schwab's avatar
Andreas Schwab committed
567
void __do_global_dtors ()
568
{}
569 570
/* Linux has a bug in its library; avoid an error.  */
#ifndef LINUX
571
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
572
#endif
573
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
574
#endif /* GCC_CTORS_IN_LIBC */
Andreas Schwab's avatar
Andreas Schwab committed
575
void __main ()
576 577
{}
#endif /* __GNUC__ */
578
#endif /* ORDINARY_LINK */
579

Karl Heuer's avatar
Karl Heuer committed
580 581 582 583 584 585 586 587 588
/* 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.  */
589

Karl Heuer's avatar
Karl Heuer committed
590
static int
591
argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
Karl Heuer's avatar
Karl Heuer committed
592
     char **argv;
593
     int argc;
Karl Heuer's avatar
Karl Heuer committed
594 595 596 597 598 599 600 601
     char *sstr;
     char *lstr;
     int minlen;
     char **valptr;
     int *skipptr;
{
  char *p;
  int arglen;
602 603 604 605 606 607 608
  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
609 610 611 612 613 614 615 616 617 618 619 620 621 622 623
  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));
624
  if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
Karl Heuer's avatar
Karl Heuer committed
625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
    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;
    }
}

649
#ifdef DOUG_LEA_MALLOC
Jim Blandy's avatar
Jim Blandy committed
650

651 652 653 654 655 656 657 658
/* malloc can be invoked even before main (e.g. by the dynamic
   linker), so the dumped malloc state must be restored as early as
   possible using this special hook.  */

static void
malloc_initialize_hook ()
{
  extern char **environ;
659

660 661
  if (initialized)
    {
662 663 664
      if (!malloc_using_checking)
	/* Work around a bug in glibc's malloc.  MALLOC_CHECK_ must be
	   ignored if the heap to be restored was constructed without
665 666 667 668
	   malloc checking.  Can't use unsetenv, since that calls malloc.  */
	{
	  char **p;

669
	  for (p = environ; *p; p++)
670 671 672 673 674 675 676 677
	    if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
	      {
		do
		  *p = p[1];
		while (*++p);
		break;
	      }
	}
678

679 680 681
      malloc_set_state (malloc_state_ptr);
      free (malloc_state_ptr);
    }
682 683
  else
    malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
684 685 686 687 688 689 690 691 692 693 694 695 696 697
}

void (*__malloc_initialize_hook) () = malloc_initialize_hook;

#endif /* DOUG_LEA_MALLOC */

/* ARGSUSED */
int
main (argc, argv, envp)
     int argc;
     char **argv;
     char **envp;
{
  char stack_bottom_variable;
698
  int do_initial_setlocale;
699 700 701 702 703 704 705 706 707 708
  int skip_args = 0;
  extern int errno;
  extern int sys_nerr;
#ifdef HAVE_SETRLIMIT
  struct rlimit rlim;
#endif
  int no_loadup = 0;

#ifdef LINUX_SBRK_BUG
  __sbrk (1);
709 710
#endif

711 712 713 714 715
#ifdef RUN_TIME_REMAP
  if (initialized)
    run_time_remap (argv[0]);
#endif

716
  sort_args (argc, argv);
717 718
  argc = 0;
  while (argv[argc]) argc++;
719

720 721 722 723
  if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
      /* We don't know the version number unless this is a dumped Emacs.
         So ignore --version otherwise.  */
      && initialized)
724 725 726 727 728 729 730 731 732 733
    {
      Lisp_Object tem;
      tem = Fsymbol_value (intern ("emacs-version"));
      if (!STRINGP (tem))
	{
	  fprintf (stderr, "Invalid value of `emacs-version'\n");
	  exit (1);
	}
      else
	{
734
	  printf ("GNU Emacs %s\n", XSTRING (tem)->data);
735
	  printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n");
736 737 738 739
	  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, ");
Karl Heuer's avatar
Karl Heuer committed
740
	  printf ("see the file named COPYING.\n");
741 742 743 744
	  exit (0);
	}
    }

Jim Blandy's avatar
Jim Blandy committed
745 746
/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
747
  if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
748 749 750 751 752 753 754 755 756 757 758 759 760
    {
      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

761
#ifdef NeXT
762 763 764 765 766 767 768
  {
    extern int malloc_cookie;
    /* This helps out unexnext.c.  */
    if (initialized)
      if (malloc_jumpstart (malloc_cookie) != 0)
	printf ("malloc jumpstart failed!\n");
  }
769 770
#endif /* NeXT */

Jim Blandy's avatar
Jim Blandy committed
771 772
#ifdef VMS
  /* If -map specified, map the data file in */
Karl Heuer's avatar
Karl Heuer committed
773 774
  {
    char *file;
775
    if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
776 777
      mapin_data (file);
  }
Jim Blandy's avatar
Jim Blandy committed
778 779

#ifdef LINK_CRTL_SHARE
780
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
781 782 783 784 785 786 787 788 789
  /* 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;
790
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
791 792 793
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

794
#if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
795 796 797 798 799 800 801 802
  /* Extend the stack space available.
     Don't do that if dumping, since some systems (e.g. DJGPP)
     might define a smaller stack limit at that time.  */
  if (1
#ifndef CANNOT_DUMP
      && (!noninteractive || initialized)
#endif
      && !getrlimit (RLIMIT_STACK, &rlim))
803
    {
804
      long newlim;
805
      extern int re_max_failures;
806 807 808 809 810 811 812 813
      /* Approximate the amount regex.c needs per unit of re_max_failures.  */
      int ratio = 20 * sizeof (char *);
      /* Then add 33% to cover the size of the smaller stacks that regex.c
	 successively allocates and discards, on its way to the maximum.  */
      ratio += ratio / 3;
      /* Add in some extra to cover
	 what we're likely to use for other reasons.  */
      newlim = re_max_failures * ratio + 200000;
814 815 816 817 818 819 820
#ifdef __NetBSD__
      /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
       stack allocation routine for new process that the allocation
       fails if stack limit is not on page boundary.  So, round up the
       new limit to page boundary.  */
      newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
#endif
821
      if (newlim > rlim.rlim_max)
822 823
	{
	  newlim = rlim.rlim_max;
824 825
	  /* Don't let regex.c overflow the stack we have.  */
	  re_max_failures = (newlim - 200000) / ratio;
826
	}
827 828 829
      if (rlim.rlim_cur < newlim)
	rlim.rlim_cur = newlim;

830 831
      setrlimit (RLIMIT_STACK, &rlim);
    }
832
#endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
833

Jim Blandy's avatar
Jim Blandy committed
834 835 836 837 838
  /* Record (approximately) where the stack begins.  */
  stack_bottom = &stack_bottom_variable;

#ifdef USG_SHARED_LIBRARIES
  if (bss_end)
839
    brk ((void *)bss_end);
Jim Blandy's avatar
Jim Blandy committed
840 841 842
#endif

  clearerr (stdin);
843

Jim Blandy's avatar
Jim Blandy committed
844
#ifndef SYSTEM_MALLOC
845 846
  /* Arrange to get warning messages as memory fills up.  */
  memory_warnings (0, malloc_warning);
847

848 849 850
  /* Call malloc at least once, to run the initial __malloc_hook.
     Also call realloc and free for consistency.  */
  free (realloc (malloc (4), 4));
851 852 853

  /* Arrange to disable interrupt input inside malloc etc.  */
  uninterrupt_malloc ();
Jim Blandy's avatar
Jim Blandy committed
854 855
#endif	/* not SYSTEM_MALLOC */

856 857 858 859
#ifdef MSDOS
  /* We do all file input/output as binary files.  When we need to translate
     newlines, we do that manually.  */
  _fmode = O_BINARY;
860 861 862 863 864 865 866 867 868 869

#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 */
870 871 872
  (stdin)->_flag &= ~_IOTEXT;
  (stdout)->_flag &= ~_IOTEXT;
  (stderr)->_flag &= ~_IOTEXT;
873
#endif /* not __DJGPP__ >= 2 */
874 875
#endif /* MSDOS */

876
#ifdef SET_EMACS_PRIORITY
877
  if (emacs_priority)
878
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
879
  setuid (getuid ());
880
#endif /* SET_EMACS_PRIORITY */
Jim Blandy's avatar
Jim Blandy committed
881

882 883 884 885 886 887 888 889 890 891 892 893 894 895
  /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
     The build procedure uses this while dumping, to ensure that the
     dumped Emacs does not have its system locale tables initialized,
     as that might cause screwups when the dumped Emacs starts up.  */
  {
    char *lc_all = getenv ("LC_ALL");
    do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
  }

  /* Set locale now, so that initial error messages are localized properly.
     fixup_locale must wait until later, since it builds strings.  */
  if (do_initial_setlocale)
    setlocale (LC_ALL, "");

896
#ifdef EXTRA_INITIALIZE
897
  EXTRA_INITIALIZE;
898 899
#endif

Jim Blandy's avatar
Jim Blandy committed
900 901
  inhibit_window_system = 0;

Jim Blandy's avatar
Jim Blandy committed
902
  /* Handle the -t switch, which specifies filename to use as terminal */
903 904 905 906 907 908
  while (1)
    {
      char *term;
      if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
	{
	  int result;
909 910 911
	  emacs_close (0);
	  emacs_close (1);
	  result = emacs_open (term, O_RDWR, 0);
912 913 914 915 916 917 918 919 920 921 922 923 924
	  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);
925
#ifdef HAVE_WINDOW_SYSTEM
926
	  inhibit_window_system = 1; /* -t => -nw */
Jim Blandy's avatar
Jim Blandy committed
927
#endif
928 929 930 931 932
	}
      else
	break;
    }

933
  if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
934
    inhibit_window_system = 1;
Jim Blandy's avatar
Jim Blandy committed
935

Karl Heuer's avatar
Karl Heuer committed
936
  /* Handle the -batch switch, which means don't do interactive display.  */
Jim Blandy's avatar
Jim Blandy committed
937
  noninteractive = 0;
938
  if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
939 940 941
    noninteractive = 1;

  /* Handle the --help option, which gives a usage message..  */
942
  if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
943
    {
944 945
      printf (USAGE1, argv[0]);
      printf (USAGE2);
Karl Heuer's avatar
Karl Heuer committed
946
      exit (0);
Jim Blandy's avatar
Jim Blandy committed
947 948
    }

949 950 951 952 953 954 955 956 957 958 959 960 961 962 963
  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
964 965
  init_signals ();

966 967 968 969 970 971 972
  /* Don't catch SIGHUP if dumping.  */
  if (1
#ifndef CANNOT_DUMP
      && initialized
#endif
      )
    {
973
      sigblock (sigmask (SIGHUP));
974 975 976 977 978
      /* 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);
979
      sigunblock (sigmask (SIGHUP));
980 981
    }

Jim Blandy's avatar
Jim Blandy committed
982 983 984 985 986 987 988 989
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
990
      /* Don't catch these signals in batch mode if dumping.
Jim Blandy's avatar
Jim Blandy committed
991 992 993 994 995
	 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);
996 997 998 999 1000 1001
#ifdef SIGUSR1
      signal (SIGUSR1, handle_USR1_signal);
#ifdef SIGUSR2
      signal (SIGUSR2, handle_USR2_signal);
#endif
#endif
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
#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
1023 1024
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
1025
      signal (SIGIOT, fatal_error_signal);
1026
#endif
Jim Blandy's avatar
Jim Blandy committed
1027 1028 1029 1030
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
1031
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
1032
      signal (SIGBUS, fatal_error_signal);
1033
#endif
Jim Blandy's avatar
Jim Blandy committed
1034
      signal (SIGSEGV, fatal_error_signal);
1035
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
1036
      signal (SIGSYS, fatal_error_signal);
1037
#endif
Jim Blandy's avatar
Jim Blandy committed
1038 1039 1040 1041 1042 1043 1044 1045
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

1046 1047 1048 1049 1050
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
1051
#ifdef AIX
1052 1053
/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU.  */
      signal (SIGXCPU, fatal_error_signal);
1054
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
1055
      signal (SIGIOINT, fatal_error_signal);
1056
#endif
Jim Blandy's avatar
Jim Blandy committed
1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
      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 ();
1073 1074
      init_charset_once ();
      init_coding_once ();
Jim Blandy's avatar
Jim Blandy committed
1075
      init_syntax_once ();	/* Create standard syntax table.  */
1076
      init_category_once ();	/* Create standard category table.  */
Jim Blandy's avatar
Jim Blandy committed
1077 1078 1079 1080
		      /* 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 */
Gerd Moellmann's avatar
Gerd Moellmann committed
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090
				/* Must precede init_window_once */
      
      /* Call syms_of_xfaces before init_window_once because that
	 function creates Vterminal_frame.  Termcap frames now use
	 faces, and the face implementation uses some symbols as
	 face names.  */
#ifndef HAVE_NTGUI
      syms_of_xfaces ();
#endif

Jim Blandy's avatar
Jim Blandy committed
1091
      init_window_once ();	/* Init the window system */
1092
      init_fileio_once ();	/* Must precede any path manipulation.  */
Jim Blandy's avatar
Jim Blandy committed
1093 1094 1095
    }

  init_alloc ();
1096 1097 1098 1099

  if (do_initial_setlocale)
    {
      fixup_locale ();
1100 1101
      Vsystem_messages_locale = Vprevious_system_messages_locale;
      Vsystem_time_locale = Vprevious_system_time_locale;
1102 1103
    }

Jim Blandy's avatar
Jim Blandy committed
1104
  init_eval ();
Kenichi Handa's avatar
Kenichi Handa committed
1105
  init_coding ();
Jim Blandy's avatar
Jim Blandy committed
1106
  init_data ();
1107 1108 1109
#ifdef CLASH_DETECTION
  init_filelock ();;
#endif
Gerd Moellmann's avatar
Gerd Moellmann committed
1110
  init_atimer ();
1111
  running_asynch_code = 0;
1112

Richard M. Stallman's avatar
Richard M. Stallman committed
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
  /* Handle --unibyte and the EMACS_UNIBYTE envvar,
     but not while dumping.  */
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
      int inhibit_unibyte = 0;

      /* --multibyte overrides EMACS_UNIBYTE.  */
      if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
	  || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args))
	inhibit_unibyte = 1;

      /* --unibyte requests that we set up to do everything with single-byte
	 buffers and strings.  We need to handle this before calling
	 init_lread, init_editfns and other places that generate Lisp strings
	 from text in the environment.  */
Dave Love's avatar
Dave Love committed
1134 1135 1136 1137 1138 1139
      /* Actually this shouldn't be needed as of 20.4 in a generally
	 unibyte environment.  As handa says, environment values
	 aren't now decoded; also existing buffers are now made
	 unibyte during startup if .emacs sets unibyte.  Tested with
	 8-bit data in environment variables and /etc/passwd, setting
	 unibyte and Latin-1 in .emacs. -- Dave Love */
Richard M. Stallman's avatar
Richard M. Stallman committed
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149
      if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
	  || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
	  || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
	{
	  Lisp_Object old_log_max;
	  Lisp_Object symbol, tail;

	  symbol = intern ("default-enable-multibyte-characters");
	  Fset (symbol, Qnil);

1150 1151 1152 1153 1154 1155 1156 1157
	  if (initialized)
	    {
	      /* Erase pre-dump messages in *Messages* now so no abort.  */
	      old_log_max = Vmessage_log_max;
	      XSETFASTINT (Vmessage_log_max, 0);
	      message_dolog ("", 0, 1, 0);
	      Vmessage_log_max = old_log_max;
	    }
Richard M. Stallman's avatar
Richard M. Stallman committed
1158

1159
	  for (tail = Vbuffer_alist; CONSP (tail);
1160
	       tail = XCDR (tail))
Richard M. Stallman's avatar
Richard M. Stallman committed
1161 1162 1163
	    {
	      Lisp_Object buffer;

1164
	      buffer = Fcdr (XCAR (tail));
Richard M. Stallman's avatar
Richard M. Stallman committed
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
	      /* Verify that all buffers are empty now, as they
		 ought to be.  */
	      if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
		abort ();
	      /* It is safe to do this crudely in an empty buffer.  */
	      XBUFFER (buffer)->enable_multibyte_characters = Qnil;
	    }
	}
    }

1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
  no_loadup
    = !argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);


#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.  */
  {
    char *displayname = 0;
    int count_before = skip_args;

    /* Skip any number of -d options, but only use the last one.  */
    while (1)
      {
	int count_before_this = skip_args;

	if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
	  display_arg = 1;
	else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
	  display_arg = 1;
	else
	  break;

	count_before = count_before_this;
      }

    /* 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++;
      }
    /* Change --display to -d, when its arg is separate.  */
    else if (displayname != 0 && skip_args > count_before
	     && argv[count_before + 1][1] == '-')
      argv[count_before + 1] = "-d";

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

  /* argmatch must not be used after here,
     except when bulding temacs
     because the -d argument has not been skipped in skip_args.  */

1234 1235 1236 1237
#ifdef MSDOS
  /* Call early 'cause init_environment needs it.  */
  init_dosfns ();
  /* Set defaults for several environment variables.  */
1238 1239 1240
  if (initialized)
    init_environment (argc, argv, skip_args);
  else
1241
    tzset ();
1242
#endif /* MSDOS */
1243

1244 1245
#ifdef WINDOWSNT
  /* Initialize environment from registry settings.  */
1246
  init_environment (argv);
1247
  init_ntproc ();	/* must precede init_editfns */
1248 1249
#endif

1250 1251 1252 1253
  /* 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 ();
1254 1255 1256
  /* 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.  */
1257 1258
  /* Setting LANG here will defeat the startup locale processing...  */
#ifdef AIX3_2
1259 1260
  putenv ("LANG=C");
#endif
1261

1262 1263
  init_buffer ();	/* Init default directory of main buffer */

1264
  init_callproc_1 ();	/* Must precede init_cmdargs and init_sys_modes.  */
1265
  init_cmdargs (argc, argv, skip_args);	/* Must precede init_lread.  */
1266 1267 1268 1269 1270 1271 1272

  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);
1273
      message_dolog ("", 0, 1, 0);
1274 1275 1276
      Vmessage_log_max = old_log_max;
    }

1277
  init_callproc ();	/* Must follow init_cmdargs but not init_sys_modes.  */
Jim Blandy's avatar
Jim Blandy committed
1278
  init_lread ();
Jim Blandy's avatar
Jim Blandy committed
1279

1280 1281
  /* Intern the names of all standard functions and variables;
     define standard keys.  */
Jim Blandy's avatar
Jim Blandy committed
1282 1283 1284 1285 1286 1287 1288 1289

  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
1290
      syms_of_lread ();
Jim Blandy's avatar
Jim Blandy committed
1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302
      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 ();
1303 1304 1305
      syms_of_category ();
      syms_of_ccl ();
      syms_of_charset ();
Jim Blandy's avatar
Jim Blandy committed
1306 1307 1308 1309 1310 1311 1312 1313 1314
      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 ();
1315
      syms_of_coding ();	/* This should be after syms_of_fileio.  */
Jim Blandy's avatar
Jim Blandy committed
1316 1317 1318 1319
#ifdef CLASH_DETECTION
      syms_of_filelock ();
#endif /* CLASH_DETECTION */
      syms_of_indent ();
1320
      syms_of_insdel ();
Jim Blandy's avatar
Jim Blandy committed
1321 1322 1323 1324 1325 1326 1327 1328
      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
1329
      syms_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
1330
      syms_of_syntax ();
Karl Heuer's avatar
Karl Heuer committed
1331
      syms_of_term ();
Jim Blandy's avatar
Jim Blandy committed
1332
      syms_of_undo ();
Gerd Moellmann's avatar
Gerd Moellmann committed
1333 1334 1335
#ifdef HAVE_SOUND
      syms_of_sound ();
#endif
Joseph Arceneaux's avatar
Joseph Arceneaux committed
1336 1337

      syms_of_textprop ();
1338
      syms_of_composite ();
Jim Blandy's avatar
Jim Blandy committed
1339 1340 1341
#ifdef VMS
      syms_of_vmsproc ();
#endif /* VMS */
1342 1343 1344
#ifdef WINDOWSNT
      syms_of_ntproc ();
#endif /* WINDOWSNT */
Jim Blandy's avatar
Jim Blandy committed
1345 1346 1347
      syms_of_window ();
      syms_of_xdisp ();
#ifdef HAVE_X_WINDOWS
Jim Blandy's avatar
Jim Blandy committed
1348
      syms_of_xterm ();
Jim Blandy's avatar
Jim Blandy committed
1349
      syms_of_xfns ();
1350
      syms_of_fontset ();
Jim Blandy's avatar
Jim Blandy committed
1351 1352 1353
#ifdef HAVE_X11
      syms_of_xselect ();
#endif
Jim Blandy's avatar
Jim Blandy committed
1354 1355
#endif /* HAVE_X_WINDOWS */

1356
#ifndef HAVE_NTGUI
1357
      syms_of_xmenu ();
1358
#endif
1359

1360
#ifdef HAVE_NTGUI
1361 1362 1363 1364 1365
      syms_of_w32term ();
      syms_of_w32fns ();
      syms_of_w32faces ();
      syms_of_w32select ();
      syms_of_w32menu ();
1366
      syms_of_fontset ();
1367 1368
#endif /* HAVE_NTGUI */

Jim Blandy's avatar
Jim Blandy committed
1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384
#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 ();
1385
      keys_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
1386 1387
    }

1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
  if (!noninteractive)
    {
#ifdef VMS
      init_vms_input ();/* init_display calls get_frame_size, that needs this */
#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.) */
Gerd Moellmann's avatar
Gerd Moellmann committed
1400 1401 1402 1403
#ifdef HAVE_X_WINDOWS
  init_xfns ();
#endif /* HAVE_X_WINDOWS */
  init_fns ();
1404 1405 1406 1407 1408 1409 1410 1411
  init_xdisp ();
  init_macros ();
  init_editfns ();
  init_floatfns ();
#ifdef VMS
  init_vmsfns ();
#endif /* VMS */
  init_process ();
Gerd Moellmann's avatar
Gerd Moellmann committed
1412 1413 1414
#ifdef HAVE_SOUND
  init_sound ();
#endif
1415

Jim Blandy's avatar
Jim Blandy committed
1416 1417
  if (!initialized)
    {
Karl Heuer's avatar
Karl Heuer committed
1418
      char *file;
Karl Heuer's avatar
Karl Heuer committed
1419
      /* Handle -l loadup, args passed by Makefile. */