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. */
103 extern int inherited_pgroup
;
106 #ifdef HAVE_X_WINDOWS
107 /* If non-zero, -d was specified, meaning we're using some window system. */
111 /* An address near the bottom of the stack.
112 Tells GC how to save a copy of the stack. */
115 #ifdef HAVE_X_WINDOWS
116 extern Lisp_Object Vwindow_system
;
117 #endif /* HAVE_X_WINDOWS */
119 #ifdef USG_SHARED_LIBRARIES
120 /* If nonzero, this is the place to put the end of the writable segment
123 unsigned int bss_end
= 0;
126 /* Nonzero means running Emacs without interactive terminal. */
130 /* Value of Lisp variable `noninteractive'.
131 Normally same as C variable `noninteractive'
132 but nothing terrible happens if user sets this one. */
136 /* Save argv and argc. */
140 static void sort_args ();
142 /* Signal code for the fatal signal that was received */
143 int fatal_error_code
;
145 /* Nonzero if handling a fatal error already */
146 int fatal_error_in_progress
;
148 /* Handle bus errors, illegal instruction, etc. */
150 fatal_error_signal (sig
)
153 fatal_error_code
= sig
;
154 signal (sig
, SIG_DFL
);
156 /* If fatal error occurs in code below, avoid infinite recursion. */
157 if (! fatal_error_in_progress
)
159 fatal_error_in_progress
= 1;
161 shut_down_emacs (sig
, 0, Qnil
);
165 LIB$
STOP (SS$_ABORT
);
167 /* Signal the same code; this time it will really be fatal.
168 Remember that since we're in a signal handler, the signal we're
169 going to send is probably blocked, so we have to unblock it if we
170 want to really receive it. */
172 sigunblock (sigmask (fatal_error_code
));
174 kill (getpid (), fatal_error_code
);
180 /* Handler for SIGDANGER. */
182 memory_warning_signal (sig
)
185 signal (sig
, memory_warning_signal
);
187 malloc_warning ("Operating system warns that virtual memory is running low.\n");
189 /* It might be unsafe to call do_auto_save now. */
190 force_auto_save_soon ();
194 /* Code for dealing with Lisp access to the Unix command line */
197 init_cmdargs (argc
, argv
, skip_args
)
203 Lisp_Object name
, dir
;
208 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
209 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
210 /* If we got no directory in argv[0], search PATH to find where
211 Emacs actually came from. */
212 if (NILP (Vinvocation_directory
))
215 int yes
= openp (Vexec_path
, Vinvocation_name
,
216 EXEC_SUFFIXES
, &found
, 1);
218 Vinvocation_directory
= Ffile_name_directory (found
);
221 Vinstallation_directory
= Qnil
;
223 if (!NILP (Vinvocation_directory
))
225 dir
= Vinvocation_directory
;
226 name
= Fexpand_file_name (Vinvocation_name
, dir
);
229 Lisp_Object tem
, lib_src_exists
;
230 Lisp_Object etc_exists
, info_exists
;
232 /* See if dir contains subdirs for use by Emacs.
233 Check for the ones that would exist in a build directory,
234 not including lisp and info. */
235 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
236 lib_src_exists
= Ffile_exists_p (tem
);
237 if (!NILP (lib_src_exists
))
239 tem
= Fexpand_file_name (build_string ("etc"), dir
);
240 etc_exists
= Ffile_exists_p (tem
);
241 if (!NILP (etc_exists
))
243 Vinstallation_directory
244 = Ffile_name_as_directory (dir
);
249 /* See if dir's parent contains those subdirs. */
250 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
251 lib_src_exists
= Ffile_exists_p (tem
);
252 if (!NILP (lib_src_exists
))
254 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
255 etc_exists
= Ffile_exists_p (tem
);
256 if (!NILP (etc_exists
))
258 tem
= Fexpand_file_name (build_string (".."), dir
);
259 Vinstallation_directory
260 = Ffile_name_as_directory (tem
);
265 /* If the Emacs executable is actually a link,
266 next try the dir that the link points into. */
267 tem
= Ffile_symlink_p (name
);
270 name
= Fexpand_file_name (tem
, dir
);
271 dir
= Ffile_name_directory (name
);
278 Vcommand_line_args
= Qnil
;
280 for (i
= argc
- 1; i
>= 0; i
--)
282 if (i
== 0 || i
> skip_args
)
284 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
288 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
289 "Return the program name that was used to run Emacs.\n\
290 Any directory names are omitted.")
293 return Fcopy_sequence (Vinvocation_name
);
296 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
298 "Return the directory name in which the Emacs executable was located")
301 return Fcopy_sequence (Vinvocation_directory
);
306 #ifdef LINK_CRTL_SHARE
307 #ifdef SHAREABLE_LIB_BUG
308 extern noshare
char **environ
;
309 #endif /* SHAREABLE_LIB_BUG */
310 #endif /* LINK_CRTL_SHARE */
313 #ifndef ORDINARY_LINK
314 /* We don't include crtbegin.o and crtend.o in the link,
315 so these functions and variables might be missed.
316 Provide dummy definitions to avoid error.
317 (We don't have any real constructors or destructors.) */
319 #ifndef GCC_CTORS_IN_LIBC
322 __do_global_ctors_aux ()
326 /* Linux has a bug in its library; avoid an error. */
328 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
330 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
331 #endif /* GCC_CTORS_IN_LIBC */
334 #endif /* __GNUC__ */
335 #endif /* ORDINARY_LINK */
337 /* Test whether the next argument in ARGV matches SSTR or a prefix of
338 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
339 (the argument is supposed to have a value) store in *VALPTR either
340 the next argument or the portion of this one after the equal sign.
341 ARGV is read starting at position *SKIPPTR; this index is advanced
342 by the number of arguments used.
344 Too bad we can't just use getopt for all of this, but we don't have
345 enough information to do it right. */
348 argmatch (argv
, sstr
, lstr
, minlen
, valptr
, skipptr
)
358 char *arg
= argv
[*skipptr
+1];
361 if (strcmp (arg
, sstr
) == 0)
365 *valptr
= argv
[*skipptr
+2];
372 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
373 ? p
- arg
: strlen (arg
));
374 if (arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
376 else if (valptr
== NULL
)
387 else if (argv
[*skipptr
+2] != NULL
)
389 *valptr
= argv
[*skipptr
+2];
400 main (argc
, argv
, envp
)
405 char stack_bottom_variable
;
410 sort_args (argc
, argv
);
412 /* Map in shared memory, if we are using that. */
414 if (argmatch (argv
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
417 /* The shared memory was just restored, which clobbered this. */
423 /* The shared memory was just restored, which clobbered this. */
429 extern int malloc_cookie
;
431 /* This helps out unexnext.c. */
433 if (malloc_jumpstart (malloc_cookie
) != 0)
434 printf ("malloc jumpstart failed!\n");
438 /* If -map specified, map the data file in */
441 if (argmatch (argv
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
445 #ifdef LINK_CRTL_SHARE
446 #ifdef SHAREABLE_LIB_BUG
447 /* Bletcherous shared libraries! */
449 stdin
= fdopen (0, "r");
451 stdout
= fdopen (1, "w");
453 stderr
= fdopen (2, "w");
456 #endif /* SHAREABLE_LIB_BUG */
457 #endif /* LINK_CRTL_SHARE */
460 /* Record (approximately) where the stack begins. */
461 stack_bottom
= &stack_bottom_variable
;
463 #ifdef RUN_TIME_REMAP
465 run_time_remap (argv
[0]);
468 #ifdef USG_SHARED_LIBRARIES
477 /* If USE_DOMAIN_ACLS environment variable exists,
478 use ACLs rather than UNIX modes. */
479 if (egetenv ("USE_DOMAIN_ACLS"))
480 default_acl (USE_DEFACL
);
484 #ifndef SYSTEM_MALLOC
487 /* Arrange to get warning messages as memory fills up. */
488 memory_warnings (0, malloc_warning
);
490 /* Arrange to disable interrupt input while malloc and friends are
492 uninterrupt_malloc ();
494 #endif /* not SYSTEM_MALLOC */
497 /* We do all file input/output as binary files. When we need to translate
498 newlines, we do that manually. */
500 (stdin
)->_flag
&= ~_IOTEXT
;
501 (stdout
)->_flag
&= ~_IOTEXT
;
502 (stderr
)->_flag
&= ~_IOTEXT
;
505 #ifdef SET_EMACS_PRIORITY
507 nice (emacs_priority
);
509 #endif /* SET_EMACS_PRIORITY */
511 #ifdef EXTRA_INITIALIZE
515 inhibit_window_system
= 0;
517 /* Handle the -t switch, which specifies filename to use as terminal */
520 if (argmatch (argv
, "-t", "--terminal", 4, &term
, &skip_args
))
525 result
= open (term
, O_RDWR
, 2 );
528 char *errstring
= strerror (errno
);
529 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
535 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
538 fprintf (stderr
, "Using %s\n", term
);
539 #ifdef HAVE_X_WINDOWS
540 inhibit_window_system
= 1; /* -t => -nw */
544 if (argmatch (argv
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
545 inhibit_window_system
= 1;
547 /* Handle the -batch switch, which means don't do interactive display. */
549 if (argmatch (argv
, "-batch", "--batch", 5, NULL
, &skip_args
))
552 /* Handle the --help option, which gives a usage message.. */
553 if (argmatch (argv
, "-help", "--help", 3, NULL
, &skip_args
))
556 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
557 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
558 \(Arguments above this line must be first; those below may be in any order)\n\
559 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
560 file-to-visit [--kill]\n", argv
[0]);
564 #ifdef HAVE_X_WINDOWS
565 /* Stupid kludge to catch command-line display spec. We can't
566 handle this argument entirely in window system dependent code
567 because we don't even know which window system dependent code
568 to run until we've recognized this argument. */
572 int count_before
= skip_args
;
574 if (argmatch (argv
, "-d", "--display", 3, &displayname
, &skip_args
))
576 else if (argmatch (argv
, "-display", 0, 3, &displayname
, &skip_args
))
579 /* If we have the form --display=NAME,
580 convert it into -d name.
581 This requires inserting a new element into argv. */
582 if (displayname
!= 0 && skip_args
- count_before
== 1)
584 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
587 for (j
= 0; j
< count_before
+ 1; j
++)
589 new[count_before
+ 1] = "-d";
590 new[count_before
+ 2] = displayname
;
591 for (j
= count_before
+ 2; j
<argc
; j
++)
592 new[j
+ 1] = argv
[j
];
596 else if (displayname
!= 0 && argv
[count_before
+ 1][1] == '-')
597 argv
[count_before
] = "-d";
599 /* Don't actually discard this arg. */
600 skip_args
= count_before
;
604 if (! noninteractive
)
609 inherited_pgroup
= EMACS_GETPGRP (0);
610 setpgrp (0, getpid ());
613 #if defined (USG5) && defined (INTERRUPT_INPUT)
625 ! noninteractive
|| initialized
631 /* Don't catch these signals in batch mode if not initialized.
632 On some machines, this sets static data that would make
633 signal fail to work right when the dumped Emacs is run. */
634 signal (SIGHUP
, fatal_error_signal
);
635 signal (SIGQUIT
, fatal_error_signal
);
636 signal (SIGILL
, fatal_error_signal
);
637 signal (SIGTRAP
, fatal_error_signal
);
639 /* This is missing on some systems - OS/2, for example. */
640 signal (SIGIOT
, fatal_error_signal
);
643 signal (SIGEMT
, fatal_error_signal
);
645 signal (SIGFPE
, fatal_error_signal
);
647 signal (SIGBUS
, fatal_error_signal
);
649 signal (SIGSEGV
, fatal_error_signal
);
651 signal (SIGSYS
, fatal_error_signal
);
653 signal (SIGTERM
, fatal_error_signal
);
655 signal (SIGXCPU
, fatal_error_signal
);
658 signal (SIGXFSZ
, fatal_error_signal
);
662 /* This just means available memory is getting low. */
663 signal (SIGDANGER
, memory_warning_signal
);
667 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
668 signal (SIGXCPU
, fatal_error_signal
);
670 signal (SIGIOINT
, fatal_error_signal
);
672 signal (SIGGRANT
, fatal_error_signal
);
673 signal (SIGRETRACT
, fatal_error_signal
);
674 signal (SIGSOUND
, fatal_error_signal
);
675 signal (SIGMSG
, fatal_error_signal
);
679 noninteractive1
= noninteractive
;
681 /* Perform basic initializations (not merely interning symbols) */
688 init_syntax_once (); /* Create standard syntax table. */
689 /* Must be done before init_buffer */
690 init_casetab_once ();
691 init_buffer_once (); /* Create buffer table and some buffers */
692 init_minibuf_once (); /* Create list of minibuffers */
693 /* Must precede init_window_once */
694 init_window_once (); /* Init the window system */
702 /* Call early 'cause init_environment needs it. */
704 /* Set defaults for several environment variables. */
705 if (initialized
) init_environment (argc
, argv
, skip_args
);
708 /* egetenv is a pretty low-level facility, which may get called in
709 many circumstances; it seems flimsy to put off initializing it
710 until calling init_callproc. */
711 set_process_environment ();
712 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
713 if this is not done. Do it after set_process_environment so that we
714 don't pollute Vprocess_environment. */
719 init_buffer (); /* Init default directory of main buffer */
721 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
722 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
723 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
729 init_vms_input ();/* init_display calls get_frame_size, that needs this */
731 init_display (); /* Determine terminal type. init_sys_modes uses results */
733 init_keyboard (); /* This too must precede init_sys_modes */
735 init_vmsproc (); /* And this too. */
737 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
741 #ifdef LISP_FLOAT_TYPE
748 #ifdef CLASH_DETECTION
750 #endif /* CLASH_DETECTION */
752 /* Intern the names of all standard functions and variables; define standard keys */
756 /* The basic levels of Lisp must come first */
757 /* And data must come first of all
758 for the sake of symbols like error-message */
771 syms_of_casefiddle ();
775 #ifndef NO_DIR_LIBRARY
777 #endif /* not NO_DIR_LIBRARY */
783 #ifdef CLASH_DETECTION
785 #endif /* CLASH_DETECTION */
800 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
807 #ifdef HAVE_X_WINDOWS
816 #endif /* HAVE_X_MENU */
817 #endif /* HAVE_X_WINDOWS */
819 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
832 keys_of_casefiddle ();
846 /* Handle -l loadup-and-dump, args passed by Makefile. */
847 if (argmatch (argv
, "-l", "--load", 3, &file
, &skip_args
))
848 Vtop_level
= Fcons (intern ("load"),
849 Fcons (build_string (file
), Qnil
));
851 /* Unless next switch is -nl, load "loadup.el" first thing. */
852 if (!argmatch (argv
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
853 Vtop_level
= Fcons (intern ("load"),
854 Fcons (build_string ("loadup.el"), Qnil
));
855 #endif /* CANNOT_DUMP */
860 #if defined (sun) || defined (LOCALTIME_CACHE)
861 /* sun's localtime has a bug. it caches the value of the time
862 zone rather than looking it up every time. Since localtime() is
863 called to bolt the undumping time into the undumped emacs, this
864 results in localtime ignoring the TZ environment variable.
865 This flushes the new TZ value into localtime. */
867 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
869 /* Handle the GNU standard option --version. */
870 if (argmatch (argv
, "-version", "--version", 3, NULL
, &skip_args
))
873 ver
= call0 (intern ("emacs-version"));
875 printf ("%s\n", XSTRING (ver
)->data
);
879 /* Enter editor command loop. This never returns. */
884 /* Sort the args so we can find the most important ones
885 at the beginning of argv. */
887 /* First, here's a table of all the standard options. */
897 struct standard_args standard_args
[] =
899 { "-nl", "--no-shared-memory", 100, 0 },
900 { "-map", "--map-data", 100, 0 },
901 { "-t", "--terminal", 90, 1 },
902 { "-d", "--display", 80, 1 },
903 { "-display", 0, 80, 1 },
904 { "-nw", "--no-windows", 70, 0 },
905 { "-batch", "--batch", 60, 0 },
906 { "-q", "--no-init-file", 50, 0 },
907 { "-no-init-file", 0, 50, 0 },
908 { "-no-site-file", "--no-site-file", 40, 0 },
909 { "-u", "--user", 30, 1 },
910 { "-user", 0, 30, 1 },
911 { "-debug-init", "--debug-init", 20, 0 },
912 { "-l", "--load", 10, 1 },
913 { "-load", 0, 10, 1 },
914 { "-f", "--funcall", 10, 1 },
915 { "-funcall", 0, 10, 1 },
916 { "-insert", "--insert", 10, 1 },
917 { "-bg", "--background-color", 10, 1 },
918 { "-background", 0, 10, 1 },
919 { "-fg", "--foreground-color", 10, 1 },
920 { "-foreground", 0, 10, 1 },
921 { "-bd", "--border-color", 10, 1 },
922 { "-bw", "--border-width", 10, 1 },
923 { "-ib", "--internal-border", 10, 1 },
924 { "-ms", "--mouse-color", 10, 1 },
925 { "-cr", "--cursor-color", 10, 1 },
926 { "-fn", "--font", 10, 1 },
927 { "-font", 0, 10, 1 },
928 { "-g", "--geometry", 10, 1 },
929 { "-geometry", 0, 10, 1 },
930 { "-T", "--title", 10, 1 },
931 { "-i", "--icon-type", 10, 1 },
932 { "-itype", 0, 10, 1 },
933 { "-name", "--name", 10, 1 },
934 { "-xrm", "--xrm", 10, 1 },
935 { "-r", "--reverse-video", 0, 0 },
937 { "-reverse", 0, 0, 0 },
938 { "-vb", "--vertical-scroll-bars", 0, 0 },
939 { "-iconic", "--iconic", 0, 0 },
940 { "-kill", "--kill", 0, 0 },
943 /* Reorder the elements of ARGV (assumed to have ARGC elements)
944 so that the highest priority ones come first.
945 Do not change the order of elements of equal priority.
946 If an option takes an argument, keep it and its argument together. */
949 sort_args (argc
, argv
)
953 char **new = (char **) xmalloc (sizeof (char *) * argc
);
954 /* For each element of argv,
955 the corresponding element of options is:
956 0 for an option that takes no arguments,
957 1 for an option that takes one argument, etc.
958 -1 for an ordinary non-option argument. */
959 char *options
= (char *) xmalloc (argc
);
960 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
965 /* Categorize all the options,
966 and figure out which argv elts are option arguments. */
967 for (from
= 1; from
< argc
; from
++)
971 if (argv
[from
][0] == '-')
976 /* Look for a match with a known old-fashioned option. */
977 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
978 if (!strcmp (argv
[from
], standard_args
[i
].name
))
980 options
[from
] = standard_args
[i
].nargs
;
981 priority
[from
] = standard_args
[i
].priority
;
982 from
+= standard_args
[i
].nargs
;
986 /* Look for a match with a known long option.
987 MATCH is -1 if no match so far, -2 if two or more matches so far,
988 >= 0 (the table index of the match) if just one match so far. */
989 if (argv
[from
][1] == '-')
992 thislen
= strlen (argv
[from
]);
993 equals
= index (argv
[from
], '=');
995 thislen
= equals
- argv
[from
];
997 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
998 if (!strncmp (argv
[from
], standard_args
[i
].longname
, thislen
))
1006 /* If we found exactly one match, use that. */
1009 options
[from
] = standard_args
[match
].nargs
;
1010 priority
[from
] = standard_args
[match
].priority
;
1011 /* If --OPTION=VALUE syntax is used,
1012 this option uses just one argv element. */
1015 from
+= options
[from
];
1022 /* Copy the arguments, in order of decreasing priority, to NEW. */
1027 int best_priority
= -2;
1029 /* Find the highest priority remaining option.
1030 If several have equal priority, take the first of them. */
1031 for (from
= 1; from
< argc
; from
++)
1033 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1035 best_priority
= priority
[from
];
1038 /* Skip option arguments--they are tied to the options. */
1039 if (options
[from
] > 0)
1040 from
+= options
[from
];
1046 /* Copy the highest priority remaining option, with its args, to NEW. */
1047 new[to
++] = argv
[best
];
1048 for (i
= 0; i
< options
[best
]; i
++)
1049 new[to
++] = argv
[best
+ i
+ 1];
1051 /* Clear out this option in ARGV. */
1053 for (i
= 0; i
< options
[best
]; i
++)
1054 argv
[best
+ i
+ 1] = 0;
1057 bcopy (new, argv
, sizeof (char *) * (argc
+ 1));
1060 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1061 "Exit the Emacs job and kill it.\n\
1062 If ARG is an integer, return ARG as the exit program code.\n\
1063 If ARG is a string, stuff it as keyboard input.\n\n\
1064 The value of `kill-emacs-hook', if not void,\n\
1065 is a list of functions (of no args),\n\
1066 all of which are called before Emacs is actually killed.")
1070 Lisp_Object hook
, hook1
;
1072 struct gcpro gcpro1
;
1079 if (!NILP (Vrun_hooks
) && !noninteractive
)
1080 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1084 /* Is it really necessary to do this deassign
1085 when we are going to exit anyway? */
1090 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1092 exit (INTEGERP (arg
) ? XINT (arg
)
1103 /* Perform an orderly shutdown of Emacs. Autosave any modified
1104 buffers, kill any child processes, clean up the terminal modes (if
1105 we're in the foreground), and other stuff like that. Don't perform
1106 any redisplay; this may be called when Emacs is shutting down in
1107 the background, or after its X connection has died.
1109 If SIG is a signal number, print a message for it.
1111 This is called by fatal signal handlers, X protocol error handlers,
1115 shut_down_emacs (sig
, no_x
, stuff
)
1119 /* Prevent running of hooks from now on. */
1122 /* If we are controlling the terminal, reset terminal modes */
1123 #ifdef EMACS_HAVE_TTY_PGRP
1125 int pgrp
= EMACS_GETPGRP (0);
1128 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1133 if (sig
&& sig
!= SIGTERM
)
1134 fprintf (stderr
, "Fatal error (%d).", sig
);
1142 stuff_buffered_input (stuff
);
1144 kill_buffer_processes (Qnil
);
1145 Fdo_auto_save (Qt
, Qnil
);
1147 #ifdef CLASH_DETECTION
1148 unlock_all_files ();
1152 kill_vms_processes ();
1155 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1156 #ifdef HAVE_X_WINDOWS
1157 /* It's not safe to call intern here. Maybe we are crashing. */
1158 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1159 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1160 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1162 Fx_close_current_connection ();
1163 #endif /* HAVE_X_WINDOWS */
1167 /* There is a tendency for a SIGIO signal to arrive within exit,
1168 and cause a SIGHUP because the input descriptor is already closed. */
1170 signal (SIGIO
, SIG_IGN
);
1177 /* Nothing like this can be implemented on an Apollo.
1182 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1183 "Dump current state of Emacs into data file FILENAME.\n\
1184 This function exists on systems that use HAVE_SHM.")
1186 Lisp_Object intoname
;
1188 extern int my_edata
;
1191 CHECK_STRING (intoname
, 0);
1192 intoname
= Fexpand_file_name (intoname
, Qnil
);
1195 Vpurify_flag
= Qnil
;
1198 /* Tell malloc where start of impure now is */
1199 /* Also arrange for warnings when nearly out of space. */
1200 #ifndef SYSTEM_MALLOC
1201 memory_warnings (&my_edata
, malloc_warning
);
1203 map_out_data (XSTRING (intoname
)->data
);
1210 #else /* not HAVE_SHM */
1212 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1213 "Dump current state of Emacs into executable file FILENAME.\n\
1214 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1215 This is used in the file `loadup.el' when building Emacs.\n\
1217 Bind `command-line-processed' to nil before dumping,\n\
1218 if you want the dumped Emacs to process its command line\n\
1219 and announce itself normally when it is run.")
1221 Lisp_Object intoname
, symname
;
1223 extern int my_edata
;
1226 CHECK_STRING (intoname
, 0);
1227 intoname
= Fexpand_file_name (intoname
, Qnil
);
1228 if (!NILP (symname
))
1230 CHECK_STRING (symname
, 0);
1231 if (XSTRING (symname
)->size
)
1232 symname
= Fexpand_file_name (symname
, Qnil
);
1236 Vpurify_flag
= Qnil
;
1240 mapout_data (XSTRING (intoname
)->data
);
1242 /* Tell malloc where start of impure now is */
1243 /* Also arrange for warnings when nearly out of space. */
1244 #ifndef SYSTEM_MALLOC
1246 /* On Windows, this was done before dumping, and that once suffices.
1247 Meanwhile, my_edata is not valid on Windows. */
1248 memory_warnings (&my_edata
, malloc_warning
);
1249 #endif /* not WINDOWSNT */
1251 unexec (XSTRING (intoname
)->data
,
1252 !NILP (symname
) ? XSTRING (symname
)->data
: 0, &my_edata
, 0, 0);
1253 #endif /* not VMS */
1260 #endif /* not HAVE_SHM */
1262 #endif /* not CANNOT_DUMP */
1269 decode_env_path (evarname
, defalt
)
1270 char *evarname
, *defalt
;
1272 register char *path
, *p
;
1276 /* It's okay to use getenv here, because this function is only used
1277 to initialize variables when Emacs starts up, and isn't called
1280 path
= (char *) getenv (evarname
);
1288 p
= index (path
, SEPCHAR
);
1289 if (!p
) p
= path
+ strlen (path
);
1290 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1297 return Fnreverse (lpath
);
1304 defsubr (&Sdump_emacs_data
);
1306 defsubr (&Sdump_emacs
);
1310 defsubr (&Skill_emacs
);
1312 defsubr (&Sinvocation_name
);
1313 defsubr (&Sinvocation_directory
);
1315 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1316 "Args passed by shell to Emacs, as a list of strings.");
1318 DEFVAR_LISP ("system-type", &Vsystem_type
,
1319 "Value is symbol indicating type of operating system you are using.");
1320 Vsystem_type
= intern (SYSTEM_TYPE
);
1322 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1323 "Value is string indicating configuration Emacs was built for.");
1324 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1326 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1327 "String containing the configuration options Emacs was built with.");
1328 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1330 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1331 "Non-nil means Emacs is running without interactive terminal.");
1333 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1334 "Hook to be run whenever kill-emacs is called.\n\
1335 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1336 in other similar situations), functions placed on this hook should not\n\
1337 expect to be able to interact with the user.");
1338 Vkill_emacs_hook
= Qnil
;
1340 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1341 "Priority for Emacs to run at.\n\
1342 This value is effective only if set before Emacs is dumped,\n\
1343 and only if the Emacs executable is installed with setuid to permit\n\
1344 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1345 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1346 before you compile Emacs, to enable the code for this feature.");
1349 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1350 "The program name that was used to run Emacs.\n\
1351 Any directory names are omitted.");
1353 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1354 "The directory in which the Emacs executable was found, to run it.\n\
1355 The value is nil if that directory's name is not known.");
1357 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1358 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1359 This is non-nil when we can't find those directories in their standard\n\
1360 installed locations, but we can find them\n\
1361 near where the Emacs executable was found.");
1362 Vinstallation_directory
= Qnil
;