1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 1986, 1987, 1993, 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 #include <sys/types.h>
35 #include <sys/ioctl.h>
40 #include <default_acl.h>
46 #include "intervals.h"
49 #include "syssignal.h"
56 extern void malloc_warning ();
57 extern char *index ();
58 extern char *strerror ();
60 /* Command line args from shell, as list of strings */
61 Lisp_Object Vcommand_line_args
;
63 /* The name under which Emacs was invoked, with any leading directory
65 Lisp_Object Vinvocation_name
;
67 /* The directory name from which Emacs was invoked. */
68 Lisp_Object Vinvocation_directory
;
70 /* The directory name in which to find subdirs such as lisp and etc.
71 nil means get them only from PATH_LOADSEARCH. */
72 Lisp_Object Vinstallation_directory
;
74 /* Hook run by `kill-emacs' before it does really anything. */
75 Lisp_Object Vkill_emacs_hook
;
77 /* Set nonzero after Emacs has started up the first time.
78 Prevents reinitialization of the Lisp world and keymaps
79 on subsequent starts. */
82 /* Variable whose value is symbol giving operating system type. */
83 Lisp_Object Vsystem_type
;
85 /* Variable whose value is string giving configuration built for. */
86 Lisp_Object Vsystem_configuration
;
88 /* Variable whose value is string giving configuration options,
89 for use when reporting bugs. */
90 Lisp_Object Vsystem_configuration_options
;
92 /* If non-zero, emacs should not attempt to use an window-specific code,
93 but instead should use the virtual terminal under which it was started */
94 int inhibit_window_system
;
96 /* If nonzero, set Emacs to run at this priority. This is also used
97 in child_setup and sys_suspend to make sure subshells run at normal
98 priority; Those functions have their own extern declaration. */
101 /* If non-zero a filter or a sentinel is running. Tested to save the match
102 data on the first attempt to change it inside asynchronous code. */
103 int running_asynch_code
;
107 extern int inherited_pgroup
;
110 #ifdef HAVE_X_WINDOWS
111 /* If non-zero, -d was specified, meaning we're using some window system. */
115 /* An address near the bottom of the stack.
116 Tells GC how to save a copy of the stack. */
119 #ifdef HAVE_X_WINDOWS
120 extern Lisp_Object Vwindow_system
;
121 #endif /* HAVE_X_WINDOWS */
123 #ifdef USG_SHARED_LIBRARIES
124 /* If nonzero, this is the place to put the end of the writable segment
127 unsigned int bss_end
= 0;
130 /* Nonzero means running Emacs without interactive terminal. */
134 /* Value of Lisp variable `noninteractive'.
135 Normally same as C variable `noninteractive'
136 but nothing terrible happens if user sets this one. */
140 /* Save argv and argc. */
144 static void sort_args ();
146 /* Signal code for the fatal signal that was received */
147 int fatal_error_code
;
149 /* Nonzero if handling a fatal error already */
150 int fatal_error_in_progress
;
152 /* Handle bus errors, illegal instruction, etc. */
154 fatal_error_signal (sig
)
157 fatal_error_code
= sig
;
158 signal (sig
, SIG_DFL
);
160 /* If fatal error occurs in code below, avoid infinite recursion. */
161 if (! fatal_error_in_progress
)
163 fatal_error_in_progress
= 1;
165 shut_down_emacs (sig
, 0, Qnil
);
169 LIB$
STOP (SS$_ABORT
);
171 /* Signal the same code; this time it will really be fatal.
172 Remember that since we're in a signal handler, the signal we're
173 going to send is probably blocked, so we have to unblock it if we
174 want to really receive it. */
176 sigunblock (sigmask (fatal_error_code
));
178 kill (getpid (), fatal_error_code
);
184 /* Handler for SIGDANGER. */
186 memory_warning_signal (sig
)
189 signal (sig
, memory_warning_signal
);
191 malloc_warning ("Operating system warns that virtual memory is running low.\n");
193 /* It might be unsafe to call do_auto_save now. */
194 force_auto_save_soon ();
198 /* Code for dealing with Lisp access to the Unix command line */
201 init_cmdargs (argc
, argv
, skip_args
)
207 Lisp_Object name
, dir
;
212 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
213 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
214 /* If we got no directory in argv[0], search PATH to find where
215 Emacs actually came from. */
216 if (NILP (Vinvocation_directory
))
219 int yes
= openp (Vexec_path
, Vinvocation_name
,
220 EXEC_SUFFIXES
, &found
, 1);
222 Vinvocation_directory
= Ffile_name_directory (found
);
225 Vinstallation_directory
= Qnil
;
227 if (!NILP (Vinvocation_directory
))
229 dir
= Vinvocation_directory
;
230 name
= Fexpand_file_name (Vinvocation_name
, dir
);
233 Lisp_Object tem
, lib_src_exists
;
234 Lisp_Object etc_exists
, info_exists
;
236 /* See if dir contains subdirs for use by Emacs.
237 Check for the ones that would exist in a build directory,
238 not including lisp and info. */
239 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
240 lib_src_exists
= Ffile_exists_p (tem
);
241 if (!NILP (lib_src_exists
))
243 tem
= Fexpand_file_name (build_string ("etc"), dir
);
244 etc_exists
= Ffile_exists_p (tem
);
245 if (!NILP (etc_exists
))
247 Vinstallation_directory
248 = Ffile_name_as_directory (dir
);
253 /* See if dir's parent contains those subdirs. */
254 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
255 lib_src_exists
= Ffile_exists_p (tem
);
256 if (!NILP (lib_src_exists
))
258 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
259 etc_exists
= Ffile_exists_p (tem
);
260 if (!NILP (etc_exists
))
262 tem
= Fexpand_file_name (build_string (".."), dir
);
263 Vinstallation_directory
264 = Ffile_name_as_directory (tem
);
269 /* If the Emacs executable is actually a link,
270 next try the dir that the link points into. */
271 tem
= Ffile_symlink_p (name
);
274 name
= Fexpand_file_name (tem
, dir
);
275 dir
= Ffile_name_directory (name
);
282 Vcommand_line_args
= Qnil
;
284 for (i
= argc
- 1; i
>= 0; i
--)
286 if (i
== 0 || i
> skip_args
)
288 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
292 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
293 "Return the program name that was used to run Emacs.\n\
294 Any directory names are omitted.")
297 return Fcopy_sequence (Vinvocation_name
);
300 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
302 "Return the directory name in which the Emacs executable was located")
305 return Fcopy_sequence (Vinvocation_directory
);
310 #ifdef LINK_CRTL_SHARE
311 #ifdef SHAREABLE_LIB_BUG
312 extern noshare
char **environ
;
313 #endif /* SHAREABLE_LIB_BUG */
314 #endif /* LINK_CRTL_SHARE */
317 #ifndef ORDINARY_LINK
318 /* We don't include crtbegin.o and crtend.o in the link,
319 so these functions and variables might be missed.
320 Provide dummy definitions to avoid error.
321 (We don't have any real constructors or destructors.) */
323 #ifndef GCC_CTORS_IN_LIBC
326 __do_global_ctors_aux ()
330 /* Linux has a bug in its library; avoid an error. */
332 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
334 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
335 #endif /* GCC_CTORS_IN_LIBC */
338 #endif /* __GNUC__ */
339 #endif /* ORDINARY_LINK */
341 /* Test whether the next argument in ARGV matches SSTR or a prefix of
342 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
343 (the argument is supposed to have a value) store in *VALPTR either
344 the next argument or the portion of this one after the equal sign.
345 ARGV is read starting at position *SKIPPTR; this index is advanced
346 by the number of arguments used.
348 Too bad we can't just use getopt for all of this, but we don't have
349 enough information to do it right. */
352 argmatch (argv
, sstr
, lstr
, minlen
, valptr
, skipptr
)
362 char *arg
= argv
[*skipptr
+1];
365 if (strcmp (arg
, sstr
) == 0)
369 *valptr
= argv
[*skipptr
+2];
376 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
377 ? p
- arg
: strlen (arg
));
378 if (arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
380 else if (valptr
== NULL
)
391 else if (argv
[*skipptr
+2] != NULL
)
393 *valptr
= argv
[*skipptr
+2];
404 main (argc
, argv
, envp
)
409 char stack_bottom_variable
;
414 sort_args (argc
, argv
);
416 /* Map in shared memory, if we are using that. */
418 if (argmatch (argv
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
421 /* The shared memory was just restored, which clobbered this. */
427 /* The shared memory was just restored, which clobbered this. */
433 extern int malloc_cookie
;
435 /* This helps out unexnext.c. */
437 if (malloc_jumpstart (malloc_cookie
) != 0)
438 printf ("malloc jumpstart failed!\n");
442 /* If -map specified, map the data file in */
445 if (argmatch (argv
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
449 #ifdef LINK_CRTL_SHARE
450 #ifdef SHAREABLE_LIB_BUG
451 /* Bletcherous shared libraries! */
453 stdin
= fdopen (0, "r");
455 stdout
= fdopen (1, "w");
457 stderr
= fdopen (2, "w");
460 #endif /* SHAREABLE_LIB_BUG */
461 #endif /* LINK_CRTL_SHARE */
464 /* Record (approximately) where the stack begins. */
465 stack_bottom
= &stack_bottom_variable
;
467 #ifdef RUN_TIME_REMAP
469 run_time_remap (argv
[0]);
472 #ifdef USG_SHARED_LIBRARIES
481 /* If USE_DOMAIN_ACLS environment variable exists,
482 use ACLs rather than UNIX modes. */
483 if (egetenv ("USE_DOMAIN_ACLS"))
484 default_acl (USE_DEFACL
);
488 #ifndef SYSTEM_MALLOC
491 /* Arrange to get warning messages as memory fills up. */
492 memory_warnings (0, malloc_warning
);
494 /* Arrange to disable interrupt input while malloc and friends are
496 uninterrupt_malloc ();
498 #endif /* not SYSTEM_MALLOC */
501 /* We do all file input/output as binary files. When we need to translate
502 newlines, we do that manually. */
504 (stdin
)->_flag
&= ~_IOTEXT
;
505 (stdout
)->_flag
&= ~_IOTEXT
;
506 (stderr
)->_flag
&= ~_IOTEXT
;
509 #ifdef SET_EMACS_PRIORITY
511 nice (emacs_priority
);
513 #endif /* SET_EMACS_PRIORITY */
515 #ifdef EXTRA_INITIALIZE
519 inhibit_window_system
= 0;
521 /* Handle the -t switch, which specifies filename to use as terminal */
524 if (argmatch (argv
, "-t", "--terminal", 4, &term
, &skip_args
))
529 result
= open (term
, O_RDWR
, 2 );
532 char *errstring
= strerror (errno
);
533 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
539 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
542 fprintf (stderr
, "Using %s\n", term
);
543 #ifdef HAVE_X_WINDOWS
544 inhibit_window_system
= 1; /* -t => -nw */
548 if (argmatch (argv
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
549 inhibit_window_system
= 1;
551 /* Handle the -batch switch, which means don't do interactive display. */
553 if (argmatch (argv
, "-batch", "--batch", 5, NULL
, &skip_args
))
556 /* Handle the --help option, which gives a usage message.. */
557 if (argmatch (argv
, "-help", "--help", 3, NULL
, &skip_args
))
560 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
561 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
562 \(Arguments above this line must be first; those below may be in any order)\n\
563 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
564 file-to-visit [--kill]\n", argv
[0]);
568 #ifdef HAVE_X_WINDOWS
569 /* Stupid kludge to catch command-line display spec. We can't
570 handle this argument entirely in window system dependent code
571 because we don't even know which window system dependent code
572 to run until we've recognized this argument. */
576 int count_before
= skip_args
;
578 if (argmatch (argv
, "-d", "--display", 3, &displayname
, &skip_args
))
580 else if (argmatch (argv
, "-display", 0, 3, &displayname
, &skip_args
))
583 /* If we have the form --display=NAME,
584 convert it into -d name.
585 This requires inserting a new element into argv. */
586 if (displayname
!= 0 && skip_args
- count_before
== 1)
588 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
591 for (j
= 0; j
< count_before
+ 1; j
++)
593 new[count_before
+ 1] = "-d";
594 new[count_before
+ 2] = displayname
;
595 for (j
= count_before
+ 2; j
<argc
; j
++)
596 new[j
+ 1] = argv
[j
];
600 else if (displayname
!= 0 && argv
[count_before
+ 1][1] == '-')
601 argv
[count_before
] = "-d";
603 /* Don't actually discard this arg. */
604 skip_args
= count_before
;
608 if (! noninteractive
)
613 inherited_pgroup
= EMACS_GETPGRP (0);
614 setpgrp (0, getpid ());
617 #if defined (USG5) && defined (INTERRUPT_INPUT)
629 ! noninteractive
|| initialized
635 /* Don't catch these signals in batch mode if not initialized.
636 On some machines, this sets static data that would make
637 signal fail to work right when the dumped Emacs is run. */
638 signal (SIGHUP
, fatal_error_signal
);
639 signal (SIGQUIT
, fatal_error_signal
);
640 signal (SIGILL
, fatal_error_signal
);
641 signal (SIGTRAP
, fatal_error_signal
);
643 /* This is missing on some systems - OS/2, for example. */
644 signal (SIGIOT
, fatal_error_signal
);
647 signal (SIGEMT
, fatal_error_signal
);
649 signal (SIGFPE
, fatal_error_signal
);
651 signal (SIGBUS
, fatal_error_signal
);
653 signal (SIGSEGV
, fatal_error_signal
);
655 signal (SIGSYS
, fatal_error_signal
);
657 signal (SIGTERM
, fatal_error_signal
);
659 signal (SIGXCPU
, fatal_error_signal
);
662 signal (SIGXFSZ
, fatal_error_signal
);
666 /* This just means available memory is getting low. */
667 signal (SIGDANGER
, memory_warning_signal
);
671 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
672 signal (SIGXCPU
, fatal_error_signal
);
674 signal (SIGIOINT
, fatal_error_signal
);
676 signal (SIGGRANT
, fatal_error_signal
);
677 signal (SIGRETRACT
, fatal_error_signal
);
678 signal (SIGSOUND
, fatal_error_signal
);
679 signal (SIGMSG
, fatal_error_signal
);
683 noninteractive1
= noninteractive
;
685 /* Perform basic initializations (not merely interning symbols) */
692 init_syntax_once (); /* Create standard syntax table. */
693 /* Must be done before init_buffer */
694 init_casetab_once ();
695 init_buffer_once (); /* Create buffer table and some buffers */
696 init_minibuf_once (); /* Create list of minibuffers */
697 /* Must precede init_window_once */
698 init_window_once (); /* Init the window system */
704 running_asynch_code
= 0;
707 /* Call early 'cause init_environment needs it. */
709 /* Set defaults for several environment variables. */
710 if (initialized
) init_environment (argc
, argv
, skip_args
);
713 /* egetenv is a pretty low-level facility, which may get called in
714 many circumstances; it seems flimsy to put off initializing it
715 until calling init_callproc. */
716 set_process_environment ();
717 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
718 if this is not done. Do it after set_process_environment so that we
719 don't pollute Vprocess_environment. */
724 init_buffer (); /* Init default directory of main buffer */
726 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
727 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
728 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
734 init_vms_input ();/* init_display calls get_frame_size, that needs this */
736 init_display (); /* Determine terminal type. init_sys_modes uses results */
738 init_keyboard (); /* This too must precede init_sys_modes */
740 init_vmsproc (); /* And this too. */
742 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
746 #ifdef LISP_FLOAT_TYPE
753 #ifdef CLASH_DETECTION
755 #endif /* CLASH_DETECTION */
757 /* Intern the names of all standard functions and variables; define standard keys */
761 /* The basic levels of Lisp must come first */
762 /* And data must come first of all
763 for the sake of symbols like error-message */
776 syms_of_casefiddle ();
780 #ifndef NO_DIR_LIBRARY
782 #endif /* not NO_DIR_LIBRARY */
788 #ifdef CLASH_DETECTION
790 #endif /* CLASH_DETECTION */
805 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
812 #ifdef HAVE_X_WINDOWS
821 #endif /* HAVE_X_MENU */
822 #endif /* HAVE_X_WINDOWS */
824 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
837 keys_of_casefiddle ();
851 /* Handle -l loadup-and-dump, args passed by Makefile. */
852 if (argmatch (argv
, "-l", "--load", 3, &file
, &skip_args
))
853 Vtop_level
= Fcons (intern ("load"),
854 Fcons (build_string (file
), Qnil
));
856 /* Unless next switch is -nl, load "loadup.el" first thing. */
857 if (!argmatch (argv
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
858 Vtop_level
= Fcons (intern ("load"),
859 Fcons (build_string ("loadup.el"), Qnil
));
860 #endif /* CANNOT_DUMP */
865 #if defined (sun) || defined (LOCALTIME_CACHE)
866 /* sun's localtime has a bug. it caches the value of the time
867 zone rather than looking it up every time. Since localtime() is
868 called to bolt the undumping time into the undumped emacs, this
869 results in localtime ignoring the TZ environment variable.
870 This flushes the new TZ value into localtime. */
872 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
874 /* Handle the GNU standard option --version. */
875 if (argmatch (argv
, "-version", "--version", 3, NULL
, &skip_args
))
878 ver
= call0 (intern ("emacs-version"));
880 printf ("%s\n", XSTRING (ver
)->data
);
884 /* Enter editor command loop. This never returns. */
889 /* Sort the args so we can find the most important ones
890 at the beginning of argv. */
892 /* First, here's a table of all the standard options. */
902 struct standard_args standard_args
[] =
904 { "-nl", "--no-shared-memory", 100, 0 },
905 { "-map", "--map-data", 100, 0 },
906 { "-t", "--terminal", 90, 1 },
907 { "-d", "--display", 80, 1 },
908 { "-display", 0, 80, 1 },
909 { "-nw", "--no-windows", 70, 0 },
910 { "-batch", "--batch", 60, 0 },
911 { "-q", "--no-init-file", 50, 0 },
912 { "-no-init-file", 0, 50, 0 },
913 { "-no-site-file", "--no-site-file", 40, 0 },
914 { "-u", "--user", 30, 1 },
915 { "-user", 0, 30, 1 },
916 { "-debug-init", "--debug-init", 20, 0 },
917 { "-l", "--load", 10, 1 },
918 { "-load", 0, 10, 1 },
919 { "-f", "--funcall", 10, 1 },
920 { "-funcall", 0, 10, 1 },
921 { "-insert", "--insert", 10, 1 },
922 { "-bg", "--background-color", 10, 1 },
923 { "-background", 0, 10, 1 },
924 { "-fg", "--foreground-color", 10, 1 },
925 { "-foreground", 0, 10, 1 },
926 { "-bd", "--border-color", 10, 1 },
927 { "-bw", "--border-width", 10, 1 },
928 { "-ib", "--internal-border", 10, 1 },
929 { "-ms", "--mouse-color", 10, 1 },
930 { "-cr", "--cursor-color", 10, 1 },
931 { "-fn", "--font", 10, 1 },
932 { "-font", 0, 10, 1 },
933 { "-g", "--geometry", 10, 1 },
934 { "-geometry", 0, 10, 1 },
935 { "-T", "--title", 10, 1 },
936 { "-i", "--icon-type", 10, 1 },
937 { "-itype", 0, 10, 1 },
938 { "-name", "--name", 10, 1 },
939 { "-xrm", "--xrm", 10, 1 },
940 { "-r", "--reverse-video", 0, 0 },
942 { "-reverse", 0, 0, 0 },
943 { "-vb", "--vertical-scroll-bars", 0, 0 },
944 { "-iconic", "--iconic", 0, 0 },
945 { "-kill", "--kill", 0, 0 },
948 /* Reorder the elements of ARGV (assumed to have ARGC elements)
949 so that the highest priority ones come first.
950 Do not change the order of elements of equal priority.
951 If an option takes an argument, keep it and its argument together. */
954 sort_args (argc
, argv
)
958 char **new = (char **) xmalloc (sizeof (char *) * argc
);
959 /* For each element of argv,
960 the corresponding element of options is:
961 0 for an option that takes no arguments,
962 1 for an option that takes one argument, etc.
963 -1 for an ordinary non-option argument. */
964 char *options
= (char *) xmalloc (argc
);
965 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
970 /* Categorize all the options,
971 and figure out which argv elts are option arguments. */
972 for (from
= 1; from
< argc
; from
++)
976 if (argv
[from
][0] == '-')
981 /* Look for a match with a known old-fashioned option. */
982 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
983 if (!strcmp (argv
[from
], standard_args
[i
].name
))
985 options
[from
] = standard_args
[i
].nargs
;
986 priority
[from
] = standard_args
[i
].priority
;
987 from
+= standard_args
[i
].nargs
;
991 /* Look for a match with a known long option.
992 MATCH is -1 if no match so far, -2 if two or more matches so far,
993 >= 0 (the table index of the match) if just one match so far. */
994 if (argv
[from
][1] == '-')
997 thislen
= strlen (argv
[from
]);
998 equals
= index (argv
[from
], '=');
1000 thislen
= equals
- argv
[from
];
1002 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1003 if (!strncmp (argv
[from
], standard_args
[i
].longname
, thislen
))
1011 /* If we found exactly one match, use that. */
1014 options
[from
] = standard_args
[match
].nargs
;
1015 priority
[from
] = standard_args
[match
].priority
;
1016 /* If --OPTION=VALUE syntax is used,
1017 this option uses just one argv element. */
1020 from
+= options
[from
];
1027 /* Copy the arguments, in order of decreasing priority, to NEW. */
1032 int best_priority
= -2;
1034 /* Find the highest priority remaining option.
1035 If several have equal priority, take the first of them. */
1036 for (from
= 1; from
< argc
; from
++)
1038 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1040 best_priority
= priority
[from
];
1043 /* Skip option arguments--they are tied to the options. */
1044 if (options
[from
] > 0)
1045 from
+= options
[from
];
1051 /* Copy the highest priority remaining option, with its args, to NEW. */
1052 new[to
++] = argv
[best
];
1053 for (i
= 0; i
< options
[best
]; i
++)
1054 new[to
++] = argv
[best
+ i
+ 1];
1056 /* Clear out this option in ARGV. */
1058 for (i
= 0; i
< options
[best
]; i
++)
1059 argv
[best
+ i
+ 1] = 0;
1062 bcopy (new, argv
, sizeof (char *) * (argc
+ 1));
1065 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1066 "Exit the Emacs job and kill it.\n\
1067 If ARG is an integer, return ARG as the exit program code.\n\
1068 If ARG is a string, stuff it as keyboard input.\n\n\
1069 The value of `kill-emacs-hook', if not void,\n\
1070 is a list of functions (of no args),\n\
1071 all of which are called before Emacs is actually killed.")
1075 Lisp_Object hook
, hook1
;
1077 struct gcpro gcpro1
;
1084 if (!NILP (Vrun_hooks
) && !noninteractive
)
1085 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1089 /* Is it really necessary to do this deassign
1090 when we are going to exit anyway? */
1095 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1097 exit (INTEGERP (arg
) ? XINT (arg
)
1108 /* Perform an orderly shutdown of Emacs. Autosave any modified
1109 buffers, kill any child processes, clean up the terminal modes (if
1110 we're in the foreground), and other stuff like that. Don't perform
1111 any redisplay; this may be called when Emacs is shutting down in
1112 the background, or after its X connection has died.
1114 If SIG is a signal number, print a message for it.
1116 This is called by fatal signal handlers, X protocol error handlers,
1120 shut_down_emacs (sig
, no_x
, stuff
)
1124 /* Prevent running of hooks from now on. */
1127 /* If we are controlling the terminal, reset terminal modes */
1128 #ifdef EMACS_HAVE_TTY_PGRP
1130 int pgrp
= EMACS_GETPGRP (0);
1133 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1138 if (sig
&& sig
!= SIGTERM
)
1139 fprintf (stderr
, "Fatal error (%d).", sig
);
1147 stuff_buffered_input (stuff
);
1149 kill_buffer_processes (Qnil
);
1150 Fdo_auto_save (Qt
, Qnil
);
1152 #ifdef CLASH_DETECTION
1153 unlock_all_files ();
1157 kill_vms_processes ();
1160 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1161 #ifdef HAVE_X_WINDOWS
1162 /* It's not safe to call intern here. Maybe we are crashing. */
1163 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1164 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1165 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1167 Fx_close_current_connection ();
1168 #endif /* HAVE_X_WINDOWS */
1172 /* There is a tendency for a SIGIO signal to arrive within exit,
1173 and cause a SIGHUP because the input descriptor is already closed. */
1175 signal (SIGIO
, SIG_IGN
);
1182 /* Nothing like this can be implemented on an Apollo.
1187 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1188 "Dump current state of Emacs into data file FILENAME.\n\
1189 This function exists on systems that use HAVE_SHM.")
1191 Lisp_Object intoname
;
1193 extern int my_edata
;
1196 CHECK_STRING (intoname
, 0);
1197 intoname
= Fexpand_file_name (intoname
, Qnil
);
1200 Vpurify_flag
= Qnil
;
1203 /* Tell malloc where start of impure now is */
1204 /* Also arrange for warnings when nearly out of space. */
1205 #ifndef SYSTEM_MALLOC
1206 memory_warnings (&my_edata
, malloc_warning
);
1208 map_out_data (XSTRING (intoname
)->data
);
1215 #else /* not HAVE_SHM */
1217 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1218 "Dump current state of Emacs into executable file FILENAME.\n\
1219 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1220 This is used in the file `loadup.el' when building Emacs.\n\
1222 Bind `command-line-processed' to nil before dumping,\n\
1223 if you want the dumped Emacs to process its command line\n\
1224 and announce itself normally when it is run.")
1226 Lisp_Object intoname
, symname
;
1228 extern int my_edata
;
1231 CHECK_STRING (intoname
, 0);
1232 intoname
= Fexpand_file_name (intoname
, Qnil
);
1233 if (!NILP (symname
))
1235 CHECK_STRING (symname
, 0);
1236 if (XSTRING (symname
)->size
)
1237 symname
= Fexpand_file_name (symname
, Qnil
);
1241 Vpurify_flag
= Qnil
;
1245 mapout_data (XSTRING (intoname
)->data
);
1247 /* Tell malloc where start of impure now is */
1248 /* Also arrange for warnings when nearly out of space. */
1249 #ifndef SYSTEM_MALLOC
1251 /* On Windows, this was done before dumping, and that once suffices.
1252 Meanwhile, my_edata is not valid on Windows. */
1253 memory_warnings (&my_edata
, malloc_warning
);
1254 #endif /* not WINDOWSNT */
1256 unexec (XSTRING (intoname
)->data
,
1257 !NILP (symname
) ? XSTRING (symname
)->data
: 0, &my_edata
, 0, 0);
1258 #endif /* not VMS */
1265 #endif /* not HAVE_SHM */
1267 #endif /* not CANNOT_DUMP */
1274 decode_env_path (evarname
, defalt
)
1275 char *evarname
, *defalt
;
1277 register char *path
, *p
;
1281 /* It's okay to use getenv here, because this function is only used
1282 to initialize variables when Emacs starts up, and isn't called
1285 path
= (char *) getenv (evarname
);
1293 p
= index (path
, SEPCHAR
);
1294 if (!p
) p
= path
+ strlen (path
);
1295 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1302 return Fnreverse (lpath
);
1309 defsubr (&Sdump_emacs_data
);
1311 defsubr (&Sdump_emacs
);
1315 defsubr (&Skill_emacs
);
1317 defsubr (&Sinvocation_name
);
1318 defsubr (&Sinvocation_directory
);
1320 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1321 "Args passed by shell to Emacs, as a list of strings.");
1323 DEFVAR_LISP ("system-type", &Vsystem_type
,
1324 "Value is symbol indicating type of operating system you are using.");
1325 Vsystem_type
= intern (SYSTEM_TYPE
);
1327 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1328 "Value is string indicating configuration Emacs was built for.");
1329 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1331 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1332 "String containing the configuration options Emacs was built with.");
1333 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1335 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1336 "Non-nil means Emacs is running without interactive terminal.");
1338 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1339 "Hook to be run whenever kill-emacs is called.\n\
1340 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1341 in other similar situations), functions placed on this hook should not\n\
1342 expect to be able to interact with the user.");
1343 Vkill_emacs_hook
= Qnil
;
1345 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1346 "Priority for Emacs to run at.\n\
1347 This value is effective only if set before Emacs is dumped,\n\
1348 and only if the Emacs executable is installed with setuid to permit\n\
1349 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1350 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1351 before you compile Emacs, to enable the code for this feature.");
1354 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1355 "The program name that was used to run Emacs.\n\
1356 Any directory names are omitted.");
1358 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1359 "The directory in which the Emacs executable was found, to run it.\n\
1360 The value is nil if that directory's name is not known.");
1362 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1363 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1364 This is non-nil when we can't find those directories in their standard\n\
1365 installed locations, but we can find them\n\
1366 near where the Emacs executable was found.");
1367 Vinstallation_directory
= Qnil
;