1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
36 #include <sys/ioctl.h>
41 #include "intervals.h"
44 #include "blockinput.h"
45 #include "syssignal.h"
52 extern void malloc_warning ();
53 extern void set_time_zone_rule ();
54 extern char *index ();
55 extern char *strerror ();
57 /* Command line args from shell, as list of strings */
58 Lisp_Object Vcommand_line_args
;
60 /* The name under which Emacs was invoked, with any leading directory
62 Lisp_Object Vinvocation_name
;
64 /* The directory name from which Emacs was invoked. */
65 Lisp_Object Vinvocation_directory
;
67 /* The directory name in which to find subdirs such as lisp and etc.
68 nil means get them only from PATH_LOADSEARCH. */
69 Lisp_Object Vinstallation_directory
;
71 /* Hook run by `kill-emacs' before it does really anything. */
72 Lisp_Object Vkill_emacs_hook
;
74 /* Set nonzero after Emacs has started up the first time.
75 Prevents reinitialization of the Lisp world and keymaps
76 on subsequent starts. */
79 /* Variable whose value is symbol giving operating system type. */
80 Lisp_Object Vsystem_type
;
82 /* Variable whose value is string giving configuration built for. */
83 Lisp_Object Vsystem_configuration
;
85 /* Variable whose value is string giving configuration options,
86 for use when reporting bugs. */
87 Lisp_Object Vsystem_configuration_options
;
89 /* If non-zero, emacs should not attempt to use an window-specific code,
90 but instead should use the virtual terminal under which it was started */
91 int inhibit_window_system
;
93 /* If nonzero, set Emacs to run at this priority. This is also used
94 in child_setup and sys_suspend to make sure subshells run at normal
95 priority; Those functions have their own extern declaration. */
98 /* If non-zero a filter or a sentinel is running. Tested to save the match
99 data on the first attempt to change it inside asynchronous code. */
100 int running_asynch_code
;
104 extern int inherited_pgroup
;
107 #ifdef HAVE_X_WINDOWS
108 /* If non-zero, -d was specified, meaning we're using some window system. */
112 /* An address near the bottom of the stack.
113 Tells GC how to save a copy of the stack. */
116 #ifdef HAVE_WINDOW_SYSTEM
117 extern Lisp_Object Vwindow_system
;
118 #endif /* HAVE_WINDOW_SYSTEM */
120 extern Lisp_Object Vauto_save_list_file_name
;
122 #ifdef USG_SHARED_LIBRARIES
123 /* If nonzero, this is the place to put the end of the writable segment
126 unsigned int bss_end
= 0;
129 /* Nonzero means running Emacs without interactive terminal. */
133 /* Value of Lisp variable `noninteractive'.
134 Normally same as C variable `noninteractive'
135 but nothing terrible happens if user sets this one. */
139 /* Save argv and argc. */
143 static void sort_args ();
145 /* Signal code for the fatal signal that was received */
146 int fatal_error_code
;
148 /* Nonzero if handling a fatal error already */
149 int fatal_error_in_progress
;
151 /* Handle bus errors, illegal instruction, etc. */
153 fatal_error_signal (sig
)
156 fatal_error_code
= sig
;
157 signal (sig
, SIG_DFL
);
159 TOTALLY_UNBLOCK_INPUT
;
161 /* If fatal error occurs in code below, avoid infinite recursion. */
162 if (! fatal_error_in_progress
)
164 fatal_error_in_progress
= 1;
166 shut_down_emacs (sig
, 0, Qnil
);
170 LIB$
STOP (SS$_ABORT
);
172 /* Signal the same code; this time it will really be fatal.
173 Remember that since we're in a signal handler, the signal we're
174 going to send is probably blocked, so we have to unblock it if we
175 want to really receive it. */
177 sigunblock (sigmask (fatal_error_code
));
179 kill (getpid (), fatal_error_code
);
185 /* Handler for SIGDANGER. */
187 memory_warning_signal (sig
)
190 signal (sig
, memory_warning_signal
);
192 malloc_warning ("Operating system warns that virtual memory is running low.\n");
194 /* It might be unsafe to call do_auto_save now. */
195 force_auto_save_soon ();
199 /* Code for dealing with Lisp access to the Unix command line */
202 init_cmdargs (argc
, argv
, skip_args
)
208 Lisp_Object name
, dir
;
213 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
214 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
215 /* If we got no directory in argv[0], search PATH to find where
216 Emacs actually came from. */
217 if (NILP (Vinvocation_directory
))
220 int yes
= openp (Vexec_path
, Vinvocation_name
,
221 EXEC_SUFFIXES
, &found
, 1);
223 Vinvocation_directory
= Ffile_name_directory (found
);
226 if (!NILP (Vinvocation_directory
)
227 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
228 /* Emacs was started with relative path, like ./emacs */
229 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
231 Vinstallation_directory
= Qnil
;
233 if (!NILP (Vinvocation_directory
))
235 dir
= Vinvocation_directory
;
236 name
= Fexpand_file_name (Vinvocation_name
, dir
);
239 Lisp_Object tem
, lib_src_exists
;
240 Lisp_Object etc_exists
, info_exists
;
242 /* See if dir contains subdirs for use by Emacs.
243 Check for the ones that would exist in a build directory,
244 not including lisp and info. */
245 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
246 lib_src_exists
= Ffile_exists_p (tem
);
247 if (!NILP (lib_src_exists
))
249 tem
= Fexpand_file_name (build_string ("etc"), dir
);
250 etc_exists
= Ffile_exists_p (tem
);
251 if (!NILP (etc_exists
))
253 Vinstallation_directory
254 = Ffile_name_as_directory (dir
);
259 /* See if dir's parent contains those subdirs. */
260 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
261 lib_src_exists
= Ffile_exists_p (tem
);
262 if (!NILP (lib_src_exists
))
264 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
265 etc_exists
= Ffile_exists_p (tem
);
266 if (!NILP (etc_exists
))
268 tem
= Fexpand_file_name (build_string (".."), dir
);
269 Vinstallation_directory
270 = Ffile_name_as_directory (tem
);
275 /* If the Emacs executable is actually a link,
276 next try the dir that the link points into. */
277 tem
= Ffile_symlink_p (name
);
280 name
= Fexpand_file_name (tem
, dir
);
281 dir
= Ffile_name_directory (name
);
288 Vcommand_line_args
= Qnil
;
290 for (i
= argc
- 1; i
>= 0; i
--)
292 if (i
== 0 || i
> skip_args
)
294 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
298 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
299 "Return the program name that was used to run Emacs.\n\
300 Any directory names are omitted.")
303 return Fcopy_sequence (Vinvocation_name
);
306 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
308 "Return the directory name in which the Emacs executable was located")
311 return Fcopy_sequence (Vinvocation_directory
);
316 #ifdef LINK_CRTL_SHARE
317 #ifdef SHARABLE_LIB_BUG
318 extern noshare
char **environ
;
319 #endif /* SHARABLE_LIB_BUG */
320 #endif /* LINK_CRTL_SHARE */
324 /* A valid but unlikely value for the TZ environment value.
325 It is OK (though a bit slower) if the user actually chooses this value. */
326 static char dump_tz
[] = "UtC0";
329 #ifndef ORDINARY_LINK
330 /* We don't include crtbegin.o and crtend.o in the link,
331 so these functions and variables might be missed.
332 Provide dummy definitions to avoid error.
333 (We don't have any real constructors or destructors.) */
335 #ifndef GCC_CTORS_IN_LIBC
338 __do_global_ctors_aux ()
342 /* Linux has a bug in its library; avoid an error. */
344 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
346 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
347 #endif /* GCC_CTORS_IN_LIBC */
350 #endif /* __GNUC__ */
351 #endif /* ORDINARY_LINK */
353 /* Test whether the next argument in ARGV matches SSTR or a prefix of
354 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
355 (the argument is supposed to have a value) store in *VALPTR either
356 the next argument or the portion of this one after the equal sign.
357 ARGV is read starting at position *SKIPPTR; this index is advanced
358 by the number of arguments used.
360 Too bad we can't just use getopt for all of this, but we don't have
361 enough information to do it right. */
364 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
377 /* Don't access argv[argc]; give up in advance. */
378 if (argc
<= *skipptr
+ 1)
381 arg
= argv
[*skipptr
+1];
384 if (strcmp (arg
, sstr
) == 0)
388 *valptr
= argv
[*skipptr
+2];
395 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
396 ? p
- arg
: strlen (arg
));
397 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
399 else if (valptr
== NULL
)
410 else if (argv
[*skipptr
+2] != NULL
)
412 *valptr
= argv
[*skipptr
+2];
423 main (argc
, argv
, envp
)
428 char stack_bottom_variable
;
433 #ifdef LINUX_SBRK_BUG
437 sort_args (argc
, argv
);
439 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
442 tem
= Fsymbol_value (intern ("emacs-version"));
445 fprintf (stderr
, "Invalid value of `emacs-version'\n");
450 printf ("%s\n", XSTRING (tem
)->data
);
455 /* Map in shared memory, if we are using that. */
457 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
460 /* The shared memory was just restored, which clobbered this. */
466 /* The shared memory was just restored, which clobbered this. */
473 extern int malloc_cookie
;
474 /* This helps out unexnext.c. */
476 if (malloc_jumpstart (malloc_cookie
) != 0)
477 printf ("malloc jumpstart failed!\n");
482 /* If -map specified, map the data file in */
485 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
489 #ifdef LINK_CRTL_SHARE
490 #ifdef SHARABLE_LIB_BUG
491 /* Bletcherous shared libraries! */
493 stdin
= fdopen (0, "r");
495 stdout
= fdopen (1, "w");
497 stderr
= fdopen (2, "w");
500 #endif /* SHARABLE_LIB_BUG */
501 #endif /* LINK_CRTL_SHARE */
504 /* Record (approximately) where the stack begins. */
505 stack_bottom
= &stack_bottom_variable
;
507 #ifdef RUN_TIME_REMAP
509 run_time_remap (argv
[0]);
512 #ifdef USG_SHARED_LIBRARIES
514 brk ((void *)bss_end
);
519 #ifndef SYSTEM_MALLOC
522 /* Arrange to get warning messages as memory fills up. */
523 memory_warnings (0, malloc_warning
);
525 /* Arrange to disable interrupt input while malloc and friends are
527 uninterrupt_malloc ();
529 #endif /* not SYSTEM_MALLOC */
532 /* We do all file input/output as binary files. When we need to translate
533 newlines, we do that manually. */
537 if (!isatty (fileno (stdin
)))
538 setmode (fileno (stdin
), O_BINARY
);
539 if (!isatty (fileno (stdout
)))
542 setmode (fileno (stdout
), O_BINARY
);
544 #else /* not __DJGPP__ >= 2 */
545 (stdin
)->_flag
&= ~_IOTEXT
;
546 (stdout
)->_flag
&= ~_IOTEXT
;
547 (stderr
)->_flag
&= ~_IOTEXT
;
548 #endif /* not __DJGPP__ >= 2 */
551 #ifdef SET_EMACS_PRIORITY
553 nice (emacs_priority
);
555 #endif /* SET_EMACS_PRIORITY */
557 #ifdef EXTRA_INITIALIZE
561 inhibit_window_system
= 0;
563 /* Handle the -t switch, which specifies filename to use as terminal */
566 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
571 result
= open (term
, O_RDWR
, 2 );
574 char *errstring
= strerror (errno
);
575 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
581 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
584 fprintf (stderr
, "Using %s\n", term
);
585 #ifdef HAVE_WINDOW_SYSTEM
586 inhibit_window_system
= 1; /* -t => -nw */
590 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
591 inhibit_window_system
= 1;
593 /* Handle the -batch switch, which means don't do interactive display. */
595 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
598 /* Handle the --help option, which gives a usage message.. */
599 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
602 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
603 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
604 [--version] [--no-site-file]\n\
605 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
606 [+linenum] file-to-visit [--kill]\n", argv
[0]);
610 #ifdef HAVE_X_WINDOWS
611 /* Stupid kludge to catch command-line display spec. We can't
612 handle this argument entirely in window system dependent code
613 because we don't even know which window system dependent code
614 to run until we've recognized this argument. */
616 char *displayname
= 0;
618 int count_before
= skip_args
;
620 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
622 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
625 /* If we have the form --display=NAME,
626 convert it into -d name.
627 This requires inserting a new element into argv. */
628 if (displayname
!= 0 && skip_args
- count_before
== 1)
630 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
633 for (j
= 0; j
< count_before
+ 1; j
++)
635 new[count_before
+ 1] = "-d";
636 new[count_before
+ 2] = displayname
;
637 for (j
= count_before
+ 2; j
<argc
; j
++)
638 new[j
+ 1] = argv
[j
];
642 /* Change --display to -d, when its arg is separate. */
643 else if (displayname
!= 0 && skip_args
> count_before
644 && argv
[count_before
+ 1][1] == '-')
645 argv
[count_before
+ 1] = "-d";
647 /* Don't actually discard this arg. */
648 skip_args
= count_before
;
652 if (! noninteractive
)
657 inherited_pgroup
= EMACS_GETPGRP (0);
658 setpgrp (0, getpid ());
661 #if defined (USG5) && defined (INTERRUPT_INPUT)
671 /* Don't catch SIGHUP if dumping. */
679 /* In --batch mode, don't catch SIGHUP if already ignored.
680 That makes nohup work. */
682 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
683 signal (SIGHUP
, fatal_error_signal
);
684 sigunblockx (SIGHUP
);
689 ! noninteractive
|| initialized
695 /* Don't catch these signals in batch mode if dumping.
696 On some machines, this sets static data that would make
697 signal fail to work right when the dumped Emacs is run. */
698 signal (SIGQUIT
, fatal_error_signal
);
699 signal (SIGILL
, fatal_error_signal
);
700 signal (SIGTRAP
, fatal_error_signal
);
702 signal (SIGABRT
, fatal_error_signal
);
705 signal (SIGHWE
, fatal_error_signal
);
708 signal (SIGPRE
, fatal_error_signal
);
711 signal (SIGORE
, fatal_error_signal
);
714 signal (SIGUME
, fatal_error_signal
);
717 signal (SIGDLK
, fatal_error_signal
);
720 signal (SIGCPULIM
, fatal_error_signal
);
723 /* This is missing on some systems - OS/2, for example. */
724 signal (SIGIOT
, fatal_error_signal
);
727 signal (SIGEMT
, fatal_error_signal
);
729 signal (SIGFPE
, fatal_error_signal
);
731 signal (SIGBUS
, fatal_error_signal
);
733 signal (SIGSEGV
, fatal_error_signal
);
735 signal (SIGSYS
, fatal_error_signal
);
737 signal (SIGTERM
, fatal_error_signal
);
739 signal (SIGXCPU
, fatal_error_signal
);
742 signal (SIGXFSZ
, fatal_error_signal
);
746 /* This just means available memory is getting low. */
747 signal (SIGDANGER
, memory_warning_signal
);
751 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
752 signal (SIGXCPU
, fatal_error_signal
);
754 signal (SIGIOINT
, fatal_error_signal
);
756 signal (SIGGRANT
, fatal_error_signal
);
757 signal (SIGRETRACT
, fatal_error_signal
);
758 signal (SIGSOUND
, fatal_error_signal
);
759 signal (SIGMSG
, fatal_error_signal
);
763 noninteractive1
= noninteractive
;
765 /* Perform basic initializations (not merely interning symbols) */
772 init_syntax_once (); /* Create standard syntax table. */
773 /* Must be done before init_buffer */
774 init_casetab_once ();
775 init_buffer_once (); /* Create buffer table and some buffers */
776 init_minibuf_once (); /* Create list of minibuffers */
777 /* Must precede init_window_once */
778 init_window_once (); /* Init the window system */
784 running_asynch_code
= 0;
787 /* Call early 'cause init_environment needs it. */
789 /* Set defaults for several environment variables. */
791 init_environment (argc
, argv
, skip_args
);
797 init_gettimeofday ();
803 /* Initialize environment from registry settings. */
807 /* egetenv is a pretty low-level facility, which may get called in
808 many circumstances; it seems flimsy to put off initializing it
809 until calling init_callproc. */
810 set_process_environment ();
811 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
812 if this is not done. Do it after set_process_environment so that we
813 don't pollute Vprocess_environment. */
818 init_buffer (); /* Init default directory of main buffer */
820 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
821 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
822 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
828 init_vms_input ();/* init_display calls get_frame_size, that needs this */
830 init_display (); /* Determine terminal type. init_sys_modes uses results */
832 init_keyboard (); /* This too must precede init_sys_modes */
834 init_vmsproc (); /* And this too. */
836 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
840 #ifdef LISP_FLOAT_TYPE
847 #ifdef CLASH_DETECTION
849 #endif /* CLASH_DETECTION */
851 /* Intern the names of all standard functions and variables; define standard keys */
855 /* The basic levels of Lisp must come first */
856 /* And data must come first of all
857 for the sake of symbols like error-message */
870 syms_of_casefiddle ();
874 #ifndef NO_DIR_LIBRARY
876 #endif /* not NO_DIR_LIBRARY */
882 #ifdef CLASH_DETECTION
884 #endif /* CLASH_DETECTION */
899 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
906 #ifdef HAVE_X_WINDOWS
913 #endif /* HAVE_X_WINDOWS */
915 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
924 syms_of_win32term ();
926 syms_of_win32faces ();
927 syms_of_win32select ();
928 syms_of_win32menu ();
929 #endif /* HAVE_NTGUI */
939 keys_of_casefiddle ();
953 /* Handle -l loadup-and-dump, args passed by Makefile. */
954 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
955 Vtop_level
= Fcons (intern ("load"),
956 Fcons (build_string (file
), Qnil
));
958 /* Unless next switch is -nl, load "loadup.el" first thing. */
959 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
960 Vtop_level
= Fcons (intern ("load"),
961 Fcons (build_string ("loadup.el"), Qnil
));
962 #endif /* CANNOT_DUMP */
967 /* Erase any pre-dump messages in the message log, to avoid confusion */
968 Lisp_Object old_log_max
;
969 old_log_max
= Vmessage_log_max
;
970 XSETFASTINT (Vmessage_log_max
, 0);
971 message_dolog ("", 0, 1);
972 Vmessage_log_max
= old_log_max
;
976 /* If the execution TZ happens to be the same as the dump TZ,
977 change it to some other value and then change it back,
978 to force the underlying implementation to reload the TZ info.
979 This is needed on implementations that load TZ info from files,
980 since the TZ file contents may differ between dump and execution. */
981 char *tz
= getenv ("TZ");
982 if (tz
&& !strcmp (tz
, dump_tz
))
994 #ifdef LOCALTIME_CACHE
995 /* Some versions of localtime have a bug. They cache the value of the time
996 zone rather than looking it up every time. Since localtime() is
997 called to bolt the undumping time into the undumped emacs, this
998 results in localtime ignoring the TZ environment variable.
999 This flushes the new TZ value into localtime. */
1001 #endif /* defined (LOCALTIME_CACHE) */
1003 /* Enter editor command loop. This never returns. */
1008 /* Sort the args so we can find the most important ones
1009 at the beginning of argv. */
1011 /* First, here's a table of all the standard options. */
1013 struct standard_args
1021 struct standard_args standard_args
[] =
1023 { "-version", "--version", 110, 0 },
1024 { "-help", "--help", 110, 0 },
1025 { "-nl", "--no-shared-memory", 100, 0 },
1027 { "-map", "--map-data", 100, 0 },
1029 { "-t", "--terminal", 90, 1 },
1030 { "-d", "--display", 80, 1 },
1031 { "-display", 0, 80, 1 },
1032 { "-nw", "--no-windows", 70, 0 },
1033 { "-batch", "--batch", 60, 0 },
1034 { "-q", "--no-init-file", 50, 0 },
1035 { "-no-init-file", 0, 50, 0 },
1036 { "-no-site-file", "--no-site-file", 40, 0 },
1037 { "-u", "--user", 30, 1 },
1038 { "-user", 0, 30, 1 },
1039 { "-debug-init", "--debug-init", 20, 0 },
1040 { "-i", "--icon-type", 15, 0 },
1041 { "-itype", 0, 15, 0 },
1042 { "-iconic", "--iconic", 15, 0 },
1043 { "-bg", "--background-color", 10, 1 },
1044 { "-background", 0, 10, 1 },
1045 { "-fg", "--foreground-color", 10, 1 },
1046 { "-foreground", 0, 10, 1 },
1047 { "-bd", "--border-color", 10, 1 },
1048 { "-bw", "--border-width", 10, 1 },
1049 { "-ib", "--internal-border", 10, 1 },
1050 { "-ms", "--mouse-color", 10, 1 },
1051 { "-cr", "--cursor-color", 10, 1 },
1052 { "-fn", "--font", 10, 1 },
1053 { "-font", 0, 10, 1 },
1054 { "-g", "--geometry", 10, 1 },
1055 { "-geometry", 0, 10, 1 },
1056 { "-T", "--title", 10, 1 },
1057 { "-title", 0, 10, 1 },
1058 { "-name", "--name", 10, 1 },
1059 { "-rn", 0, 10, 1 },
1060 { "-xrm", "--xrm", 10, 1 },
1061 { "-r", "--reverse-video", 5, 0 },
1063 { "-reverse", 0, 5, 0 },
1064 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1065 { "-vb", "--vertical-scroll-bars", 5, 0 },
1066 /* These have the same priority as ordinary file name args,
1067 so they are not reordered with respect to those. */
1068 { "-L", "--directory", 0, 1 },
1069 { "-directory", 0, 0, 1 },
1070 { "-l", "--load", 0, 1 },
1071 { "-load", 0, 0, 1 },
1072 { "-f", "--funcall", 0, 1 },
1073 { "-funcall", 0, 0, 1 },
1074 { "-eval", "--eval", 0, 1 },
1075 { "-insert", "--insert", 0, 1 },
1076 /* This should be processed after ordinary file name args and the like. */
1077 { "-kill", "--kill", -10, 0 },
1080 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1081 so that the highest priority ones come first.
1082 Do not change the order of elements of equal priority.
1083 If an option takes an argument, keep it and its argument together. */
1086 sort_args (argc
, argv
)
1090 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1091 /* For each element of argv,
1092 the corresponding element of options is:
1093 0 for an option that takes no arguments,
1094 1 for an option that takes one argument, etc.
1095 -1 for an ordinary non-option argument. */
1096 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1097 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1102 /* Categorize all the options,
1103 and figure out which argv elts are option arguments. */
1104 for (from
= 1; from
< argc
; from
++)
1108 if (argv
[from
][0] == '-')
1113 /* Look for a match with a known old-fashioned option. */
1114 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1115 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1117 options
[from
] = standard_args
[i
].nargs
;
1118 priority
[from
] = standard_args
[i
].priority
;
1119 if (from
+ standard_args
[i
].nargs
>= argc
)
1120 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1121 from
+= standard_args
[i
].nargs
;
1125 /* Look for a match with a known long option.
1126 MATCH is -1 if no match so far, -2 if two or more matches so far,
1127 >= 0 (the table index of the match) if just one match so far. */
1128 if (argv
[from
][1] == '-')
1131 thislen
= strlen (argv
[from
]);
1132 equals
= index (argv
[from
], '=');
1134 thislen
= equals
- argv
[from
];
1137 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1138 if (standard_args
[i
].longname
1139 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1148 /* If we found exactly one match, use that. */
1151 options
[from
] = standard_args
[match
].nargs
;
1152 priority
[from
] = standard_args
[match
].priority
;
1153 /* If --OPTION=VALUE syntax is used,
1154 this option uses just one argv element. */
1157 if (from
+ options
[from
] >= argc
)
1158 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1159 from
+= options
[from
];
1166 /* Copy the arguments, in order of decreasing priority, to NEW. */
1171 int best_priority
= -9999;
1173 /* Find the highest priority remaining option.
1174 If several have equal priority, take the first of them. */
1175 for (from
= 1; from
< argc
; from
++)
1177 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1179 best_priority
= priority
[from
];
1182 /* Skip option arguments--they are tied to the options. */
1183 if (options
[from
] > 0)
1184 from
+= options
[from
];
1190 /* Copy the highest priority remaining option, with its args, to NEW. */
1191 new[to
++] = argv
[best
];
1192 for (i
= 0; i
< options
[best
]; i
++)
1193 new[to
++] = argv
[best
+ i
+ 1];
1195 /* Clear out this option in ARGV. */
1197 for (i
= 0; i
< options
[best
]; i
++)
1198 argv
[best
+ i
+ 1] = 0;
1201 bcopy (new, argv
, sizeof (char *) * argc
);
1204 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1205 "Exit the Emacs job and kill it.\n\
1206 If ARG is an integer, return ARG as the exit program code.\n\
1207 If ARG is a string, stuff it as keyboard input.\n\n\
1208 The value of `kill-emacs-hook', if not void,\n\
1209 is a list of functions (of no args),\n\
1210 all of which are called before Emacs is actually killed.")
1214 Lisp_Object hook
, hook1
;
1216 struct gcpro gcpro1
;
1223 if (!NILP (Vrun_hooks
) && !noninteractive
)
1224 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1228 /* Is it really necessary to do this deassign
1229 when we are going to exit anyway? */
1234 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1236 /* If we have an auto-save list file,
1237 kill it because we are exiting Emacs deliberately (not crashing).
1238 Do it after shut_down_emacs, which does an auto-save. */
1239 if (STRINGP (Vauto_save_list_file_name
))
1240 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1242 exit (INTEGERP (arg
) ? XINT (arg
)
1253 /* Perform an orderly shutdown of Emacs. Autosave any modified
1254 buffers, kill any child processes, clean up the terminal modes (if
1255 we're in the foreground), and other stuff like that. Don't perform
1256 any redisplay; this may be called when Emacs is shutting down in
1257 the background, or after its X connection has died.
1259 If SIG is a signal number, print a message for it.
1261 This is called by fatal signal handlers, X protocol error handlers,
1265 shut_down_emacs (sig
, no_x
, stuff
)
1269 /* Prevent running of hooks from now on. */
1272 /* If we are controlling the terminal, reset terminal modes */
1273 #ifdef EMACS_HAVE_TTY_PGRP
1275 int pgrp
= EMACS_GETPGRP (0);
1278 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1283 if (sig
&& sig
!= SIGTERM
)
1284 fprintf (stderr
, "Fatal error (%d).", sig
);
1292 stuff_buffered_input (stuff
);
1294 kill_buffer_processes (Qnil
);
1295 Fdo_auto_save (Qt
, Qnil
);
1297 #ifdef CLASH_DETECTION
1298 unlock_all_files ();
1302 kill_vms_processes ();
1305 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1306 #ifdef HAVE_X_WINDOWS
1307 /* It's not safe to call intern here. Maybe we are crashing. */
1308 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1309 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1310 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1312 Fx_close_current_connection ();
1313 #endif /* HAVE_X_WINDOWS */
1317 /* There is a tendency for a SIGIO signal to arrive within exit,
1318 and cause a SIGHUP because the input descriptor is already closed. */
1320 signal (SIGIO
, SIG_IGN
);
1330 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1331 "Dump current state of Emacs into data file FILENAME.\n\
1332 This function exists on systems that use HAVE_SHM.")
1334 Lisp_Object filename
;
1336 extern char my_edata
[];
1339 CHECK_STRING (filename
, 0);
1340 filename
= Fexpand_file_name (filename
, Qnil
);
1343 Vpurify_flag
= Qnil
;
1346 /* Tell malloc where start of impure now is */
1347 /* Also arrange for warnings when nearly out of space. */
1348 #ifndef SYSTEM_MALLOC
1349 memory_warnings (my_edata
, malloc_warning
);
1351 map_out_data (XSTRING (filename
)->data
);
1358 #else /* not HAVE_SHM */
1360 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1361 "Dump current state of Emacs into executable file FILENAME.\n\
1362 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1363 This is used in the file `loadup.el' when building Emacs.\n\
1365 Bind `command-line-processed' to nil before dumping,\n\
1366 if you want the dumped Emacs to process its command line\n\
1367 and announce itself normally when it is run.")
1369 Lisp_Object filename
, symfile
;
1371 extern char my_edata
[];
1374 CHECK_STRING (filename
, 0);
1375 filename
= Fexpand_file_name (filename
, Qnil
);
1376 if (!NILP (symfile
))
1378 CHECK_STRING (symfile
, 0);
1379 if (XSTRING (symfile
)->size
)
1380 symfile
= Fexpand_file_name (symfile
, Qnil
);
1384 Vpurify_flag
= Qnil
;
1387 set_time_zone_rule (dump_tz
);
1388 #ifndef LOCALTIME_CACHE
1389 /* Force a tz reload, since set_time_zone_rule doesn't. */
1396 mapout_data (XSTRING (filename
)->data
);
1398 /* Tell malloc where start of impure now is */
1399 /* Also arrange for warnings when nearly out of space. */
1400 #ifndef SYSTEM_MALLOC
1402 /* On Windows, this was done before dumping, and that once suffices.
1403 Meanwhile, my_edata is not valid on Windows. */
1404 memory_warnings (my_edata
, malloc_warning
);
1405 #endif /* not WINDOWSNT */
1407 unexec (XSTRING (filename
)->data
,
1408 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1409 #endif /* not VMS */
1416 #endif /* not HAVE_SHM */
1418 #endif /* not CANNOT_DUMP */
1425 decode_env_path (evarname
, defalt
)
1426 char *evarname
, *defalt
;
1428 register char *path
, *p
;
1432 /* It's okay to use getenv here, because this function is only used
1433 to initialize variables when Emacs starts up, and isn't called
1436 path
= (char *) getenv (evarname
);
1444 p
= index (path
, SEPCHAR
);
1445 if (!p
) p
= path
+ strlen (path
);
1446 lpath
= Fcons (p
- path
? make_string (path
, p
- path
)
1447 : build_string ("."),
1454 return Fnreverse (lpath
);
1461 defsubr (&Sdump_emacs_data
);
1463 defsubr (&Sdump_emacs
);
1467 defsubr (&Skill_emacs
);
1469 defsubr (&Sinvocation_name
);
1470 defsubr (&Sinvocation_directory
);
1472 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1473 "Args passed by shell to Emacs, as a list of strings.");
1475 DEFVAR_LISP ("system-type", &Vsystem_type
,
1476 "Value is symbol indicating type of operating system you are using.");
1477 Vsystem_type
= intern (SYSTEM_TYPE
);
1479 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1480 "Value is string indicating configuration Emacs was built for.");
1481 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1483 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1484 "String containing the configuration options Emacs was built with.");
1485 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1487 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1488 "Non-nil means Emacs is running without interactive terminal.");
1490 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1491 "Hook to be run whenever kill-emacs is called.\n\
1492 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1493 in other similar situations), functions placed on this hook should not\n\
1494 expect to be able to interact with the user. To ask for confirmation,\n\
1495 see `kill-emacs-query-functions' instead.");
1496 Vkill_emacs_hook
= Qnil
;
1498 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1499 "Priority for Emacs to run at.\n\
1500 This value is effective only if set before Emacs is dumped,\n\
1501 and only if the Emacs executable is installed with setuid to permit\n\
1502 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1503 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1504 before you compile Emacs, to enable the code for this feature.");
1507 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1508 "The program name that was used to run Emacs.\n\
1509 Any directory names are omitted.");
1511 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1512 "The directory in which the Emacs executable was found, to run it.\n\
1513 The value is nil if that directory's name is not known.");
1515 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1516 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1517 This is non-nil when we can't find those directories in their standard\n\
1518 installed locations, but we can find them\n\
1519 near where the Emacs executable was found.");
1520 Vinstallation_directory
= Qnil
;