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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 #include <sys/types.h>
35 #include <sys/ioctl.h>
40 #include "intervals.h"
43 #include "syssignal.h"
50 extern void malloc_warning ();
51 extern char *index ();
52 extern char *strerror ();
54 /* Command line args from shell, as list of strings */
55 Lisp_Object Vcommand_line_args
;
57 /* The name under which Emacs was invoked, with any leading directory
59 Lisp_Object Vinvocation_name
;
61 /* The directory name from which Emacs was invoked. */
62 Lisp_Object Vinvocation_directory
;
64 /* The directory name in which to find subdirs such as lisp and etc.
65 nil means get them only from PATH_LOADSEARCH. */
66 Lisp_Object Vinstallation_directory
;
68 /* Hook run by `kill-emacs' before it does really anything. */
69 Lisp_Object Vkill_emacs_hook
;
71 /* Set nonzero after Emacs has started up the first time.
72 Prevents reinitialization of the Lisp world and keymaps
73 on subsequent starts. */
76 /* Variable whose value is symbol giving operating system type. */
77 Lisp_Object Vsystem_type
;
79 /* Variable whose value is string giving configuration built for. */
80 Lisp_Object Vsystem_configuration
;
82 /* Variable whose value is string giving configuration options,
83 for use when reporting bugs. */
84 Lisp_Object Vsystem_configuration_options
;
86 /* If non-zero, emacs should not attempt to use an window-specific code,
87 but instead should use the virtual terminal under which it was started */
88 int inhibit_window_system
;
90 /* If nonzero, set Emacs to run at this priority. This is also used
91 in child_setup and sys_suspend to make sure subshells run at normal
92 priority; Those functions have their own extern declaration. */
95 /* If non-zero a filter or a sentinel is running. Tested to save the match
96 data on the first attempt to change it inside asynchronous code. */
97 int running_asynch_code
;
101 extern int inherited_pgroup
;
104 #ifdef HAVE_X_WINDOWS
105 /* If non-zero, -d was specified, meaning we're using some window system. */
109 /* An address near the bottom of the stack.
110 Tells GC how to save a copy of the stack. */
113 #ifdef HAVE_X_WINDOWS
114 extern Lisp_Object Vwindow_system
;
115 #endif /* HAVE_X_WINDOWS */
117 extern Lisp_Object Vauto_save_list_file_name
;
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
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
361 /* Don't access argv[argc]; give up in advance. */
362 if (argc
<= *skipptr
+ 1)
365 arg
= argv
[*skipptr
+1];
368 if (strcmp (arg
, sstr
) == 0)
372 *valptr
= argv
[*skipptr
+2];
379 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
380 ? p
- arg
: strlen (arg
));
381 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
383 else if (valptr
== NULL
)
394 else if (argv
[*skipptr
+2] != NULL
)
396 *valptr
= argv
[*skipptr
+2];
407 main (argc
, argv
, envp
)
412 char stack_bottom_variable
;
417 sort_args (argc
, argv
);
419 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
422 tem
= Fsymbol_value (intern ("emacs-version"));
425 fprintf (stderr
, "Invalid value of `emacs-version'\n");
430 printf ("%s\n", XSTRING (tem
)->data
);
435 /* Map in shared memory, if we are using that. */
437 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
440 /* The shared memory was just restored, which clobbered this. */
446 /* The shared memory was just restored, which clobbered this. */
453 extern int malloc_cookie
;
454 /* This helps out unexnext.c. */
456 if (malloc_jumpstart (malloc_cookie
) != 0)
457 printf ("malloc jumpstart failed!\n");
462 /* If -map specified, map the data file in */
465 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
469 #ifdef LINK_CRTL_SHARE
470 #ifdef SHAREABLE_LIB_BUG
471 /* Bletcherous shared libraries! */
473 stdin
= fdopen (0, "r");
475 stdout
= fdopen (1, "w");
477 stderr
= fdopen (2, "w");
480 #endif /* SHAREABLE_LIB_BUG */
481 #endif /* LINK_CRTL_SHARE */
484 /* Record (approximately) where the stack begins. */
485 stack_bottom
= &stack_bottom_variable
;
487 #ifdef RUN_TIME_REMAP
489 run_time_remap (argv
[0]);
492 #ifdef USG_SHARED_LIBRARIES
494 brk ((void *)bss_end
);
499 #ifndef SYSTEM_MALLOC
502 /* Arrange to get warning messages as memory fills up. */
503 memory_warnings (0, malloc_warning
);
505 /* Arrange to disable interrupt input while malloc and friends are
507 uninterrupt_malloc ();
509 #endif /* not SYSTEM_MALLOC */
512 /* We do all file input/output as binary files. When we need to translate
513 newlines, we do that manually. */
515 (stdin
)->_flag
&= ~_IOTEXT
;
516 (stdout
)->_flag
&= ~_IOTEXT
;
517 (stderr
)->_flag
&= ~_IOTEXT
;
520 #ifdef SET_EMACS_PRIORITY
522 nice (emacs_priority
);
524 #endif /* SET_EMACS_PRIORITY */
526 #ifdef EXTRA_INITIALIZE
530 inhibit_window_system
= 0;
532 /* Handle the -t switch, which specifies filename to use as terminal */
535 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
540 result
= open (term
, O_RDWR
, 2 );
543 char *errstring
= strerror (errno
);
544 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
550 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
553 fprintf (stderr
, "Using %s\n", term
);
554 #ifdef HAVE_X_WINDOWS
555 inhibit_window_system
= 1; /* -t => -nw */
559 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
560 inhibit_window_system
= 1;
562 /* Handle the -batch switch, which means don't do interactive display. */
564 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
567 /* Handle the --help option, which gives a usage message.. */
568 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
571 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
572 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
573 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
574 file-to-visit [--kill]\n", argv
[0]);
578 #ifdef HAVE_X_WINDOWS
579 /* Stupid kludge to catch command-line display spec. We can't
580 handle this argument entirely in window system dependent code
581 because we don't even know which window system dependent code
582 to run until we've recognized this argument. */
586 int count_before
= skip_args
;
588 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
590 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
593 /* If we have the form --display=NAME,
594 convert it into -d name.
595 This requires inserting a new element into argv. */
596 if (displayname
!= 0 && skip_args
- count_before
== 1)
598 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
601 for (j
= 0; j
< count_before
+ 1; j
++)
603 new[count_before
+ 1] = "-d";
604 new[count_before
+ 2] = displayname
;
605 for (j
= count_before
+ 2; j
<argc
; j
++)
606 new[j
+ 1] = argv
[j
];
610 /* Change --display to -d, when its arg is separate. */
611 else if (displayname
!= 0 && skip_args
> count_before
612 && argv
[count_before
+ 1][1] == '-')
613 argv
[count_before
] = "-d";
615 /* Don't actually discard this arg. */
616 skip_args
= count_before
;
620 if (! noninteractive
)
625 inherited_pgroup
= EMACS_GETPGRP (0);
626 setpgrp (0, getpid ());
629 #if defined (USG5) && defined (INTERRUPT_INPUT)
641 ! noninteractive
|| initialized
647 /* Don't catch these signals in batch mode if not initialized.
648 On some machines, this sets static data that would make
649 signal fail to work right when the dumped Emacs is run. */
650 signal (SIGHUP
, fatal_error_signal
);
651 signal (SIGQUIT
, fatal_error_signal
);
652 signal (SIGILL
, fatal_error_signal
);
653 signal (SIGTRAP
, fatal_error_signal
);
655 signal (SIGABRT
, fatal_error_signal
);
658 signal (SIGHWE
, fatal_error_signal
);
661 signal (SIGPRE
, fatal_error_signal
);
664 signal (SIGORE
, fatal_error_signal
);
667 signal (SIGUME
, fatal_error_signal
);
670 signal (SIGDLK
, fatal_error_signal
);
673 signal (SIGCPULIM
, fatal_error_signal
);
676 /* This is missing on some systems - OS/2, for example. */
677 signal (SIGIOT
, fatal_error_signal
);
680 signal (SIGEMT
, fatal_error_signal
);
682 signal (SIGFPE
, fatal_error_signal
);
684 signal (SIGBUS
, fatal_error_signal
);
686 signal (SIGSEGV
, fatal_error_signal
);
688 signal (SIGSYS
, fatal_error_signal
);
690 signal (SIGTERM
, fatal_error_signal
);
692 signal (SIGXCPU
, fatal_error_signal
);
695 signal (SIGXFSZ
, fatal_error_signal
);
699 /* This just means available memory is getting low. */
700 signal (SIGDANGER
, memory_warning_signal
);
704 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
705 signal (SIGXCPU
, fatal_error_signal
);
707 signal (SIGIOINT
, fatal_error_signal
);
709 signal (SIGGRANT
, fatal_error_signal
);
710 signal (SIGRETRACT
, fatal_error_signal
);
711 signal (SIGSOUND
, fatal_error_signal
);
712 signal (SIGMSG
, fatal_error_signal
);
716 noninteractive1
= noninteractive
;
718 /* Perform basic initializations (not merely interning symbols) */
725 init_syntax_once (); /* Create standard syntax table. */
726 /* Must be done before init_buffer */
727 init_casetab_once ();
728 init_buffer_once (); /* Create buffer table and some buffers */
729 init_minibuf_once (); /* Create list of minibuffers */
730 /* Must precede init_window_once */
731 init_window_once (); /* Init the window system */
737 running_asynch_code
= 0;
740 /* Call early 'cause init_environment needs it. */
742 /* Set defaults for several environment variables. */
743 if (initialized
) init_environment (argc
, argv
, skip_args
);
746 /* egetenv is a pretty low-level facility, which may get called in
747 many circumstances; it seems flimsy to put off initializing it
748 until calling init_callproc. */
749 set_process_environment ();
750 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
751 if this is not done. Do it after set_process_environment so that we
752 don't pollute Vprocess_environment. */
757 init_buffer (); /* Init default directory of main buffer */
759 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
760 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
761 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
767 init_vms_input ();/* init_display calls get_frame_size, that needs this */
769 init_display (); /* Determine terminal type. init_sys_modes uses results */
771 init_keyboard (); /* This too must precede init_sys_modes */
773 init_vmsproc (); /* And this too. */
775 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
779 #ifdef LISP_FLOAT_TYPE
786 #ifdef CLASH_DETECTION
788 #endif /* CLASH_DETECTION */
790 /* Intern the names of all standard functions and variables; define standard keys */
794 /* The basic levels of Lisp must come first */
795 /* And data must come first of all
796 for the sake of symbols like error-message */
809 syms_of_casefiddle ();
813 #ifndef NO_DIR_LIBRARY
815 #endif /* not NO_DIR_LIBRARY */
821 #ifdef CLASH_DETECTION
823 #endif /* CLASH_DETECTION */
838 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
845 #ifdef HAVE_X_WINDOWS
854 #endif /* HAVE_X_MENU */
855 #endif /* HAVE_X_WINDOWS */
857 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
870 keys_of_casefiddle ();
884 /* Handle -l loadup-and-dump, args passed by Makefile. */
885 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
886 Vtop_level
= Fcons (intern ("load"),
887 Fcons (build_string (file
), Qnil
));
889 /* Unless next switch is -nl, load "loadup.el" first thing. */
890 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
891 Vtop_level
= Fcons (intern ("load"),
892 Fcons (build_string ("loadup.el"), Qnil
));
893 #endif /* CANNOT_DUMP */
898 /* Erase any pre-dump messages in the message log, to avoid confusion */
899 Lisp_Object old_log_max
;
900 old_log_max
= Vmessage_log_max
;
901 XSETFASTINT (Vmessage_log_max
, 0);
902 message_dolog ("", 0, 1);
903 Vmessage_log_max
= old_log_max
;
908 #if defined (sun) || defined (LOCALTIME_CACHE)
909 /* sun's localtime has a bug. it caches the value of the time
910 zone rather than looking it up every time. Since localtime() is
911 called to bolt the undumping time into the undumped emacs, this
912 results in localtime ignoring the TZ environment variable.
913 This flushes the new TZ value into localtime. */
915 #endif /* defined (sun) || defined (LOCALTIME_CACHE) */
917 /* Enter editor command loop. This never returns. */
922 /* Sort the args so we can find the most important ones
923 at the beginning of argv. */
925 /* First, here's a table of all the standard options. */
935 struct standard_args standard_args
[] =
937 { "-version", "--version", 110, 0 },
938 { "-help", "--help", 110, 0 },
939 { "-nl", "--no-shared-memory", 100, 0 },
941 { "-map", "--map-data", 100, 0 },
943 { "-t", "--terminal", 90, 1 },
944 { "-d", "--display", 80, 1 },
945 { "-display", 0, 80, 1 },
946 { "-nw", "--no-windows", 70, 0 },
947 { "-batch", "--batch", 60, 0 },
948 { "-q", "--no-init-file", 50, 0 },
949 { "-no-init-file", 0, 50, 0 },
950 { "-no-site-file", "--no-site-file", 40, 0 },
951 { "-u", "--user", 30, 1 },
952 { "-user", 0, 30, 1 },
953 { "-debug-init", "--debug-init", 20, 0 },
954 { "-i", "--icon-type", 15, 0 },
955 { "-itype", 0, 15, 0 },
956 { "-iconic", "--iconic", 15, 0 },
957 { "-bg", "--background-color", 10, 1 },
958 { "-background", 0, 10, 1 },
959 { "-fg", "--foreground-color", 10, 1 },
960 { "-foreground", 0, 10, 1 },
961 { "-bd", "--border-color", 10, 1 },
962 { "-bw", "--border-width", 10, 1 },
963 { "-ib", "--internal-border", 10, 1 },
964 { "-ms", "--mouse-color", 10, 1 },
965 { "-cr", "--cursor-color", 10, 1 },
966 { "-fn", "--font", 10, 1 },
967 { "-font", 0, 10, 1 },
968 { "-g", "--geometry", 10, 1 },
969 { "-geometry", 0, 10, 1 },
970 { "-T", "--title", 10, 1 },
971 { "-name", "--name", 10, 1 },
972 { "-xrm", "--xrm", 10, 1 },
973 { "-r", "--reverse-video", 5, 0 },
975 { "-reverse", 0, 5, 0 },
976 { "-vb", "--vertical-scroll-bars", 5, 0 },
977 /* These have the same priority as ordinary file name args,
978 so they are not reordered with respect to those. */
979 { "-L", "--directory", 0, 1 },
980 { "-directory", 0, 0, 1 },
981 { "-l", "--load", 0, 1 },
982 { "-load", 0, 0, 1 },
983 { "-f", "--funcall", 0, 1 },
984 { "-funcall", 0, 0, 1 },
985 { "-insert", "--insert", 0, 1 },
986 /* This should be processed after ordinary file name args and the like. */
987 { "-kill", "--kill", -10, 0 },
990 /* Reorder the elements of ARGV (assumed to have ARGC elements)
991 so that the highest priority ones come first.
992 Do not change the order of elements of equal priority.
993 If an option takes an argument, keep it and its argument together. */
996 sort_args (argc
, argv
)
1000 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1001 /* For each element of argv,
1002 the corresponding element of options is:
1003 0 for an option that takes no arguments,
1004 1 for an option that takes one argument, etc.
1005 -1 for an ordinary non-option argument. */
1006 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1007 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1012 /* Categorize all the options,
1013 and figure out which argv elts are option arguments. */
1014 for (from
= 1; from
< argc
; from
++)
1018 if (argv
[from
][0] == '-')
1023 /* Look for a match with a known old-fashioned option. */
1024 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1025 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1027 options
[from
] = standard_args
[i
].nargs
;
1028 priority
[from
] = standard_args
[i
].priority
;
1029 from
+= standard_args
[i
].nargs
;
1033 /* Look for a match with a known long option.
1034 MATCH is -1 if no match so far, -2 if two or more matches so far,
1035 >= 0 (the table index of the match) if just one match so far. */
1036 if (argv
[from
][1] == '-')
1039 thislen
= strlen (argv
[from
]);
1040 equals
= index (argv
[from
], '=');
1042 thislen
= equals
- argv
[from
];
1045 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1046 if (standard_args
[i
].longname
1047 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1056 /* If we found exactly one match, use that. */
1059 options
[from
] = standard_args
[match
].nargs
;
1060 priority
[from
] = standard_args
[match
].priority
;
1061 /* If --OPTION=VALUE syntax is used,
1062 this option uses just one argv element. */
1065 from
+= options
[from
];
1072 /* Copy the arguments, in order of decreasing priority, to NEW. */
1077 int best_priority
= -2;
1079 /* Find the highest priority remaining option.
1080 If several have equal priority, take the first of them. */
1081 for (from
= 1; from
< argc
; from
++)
1083 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1085 best_priority
= priority
[from
];
1088 /* Skip option arguments--they are tied to the options. */
1089 if (options
[from
] > 0)
1090 from
+= options
[from
];
1096 /* Copy the highest priority remaining option, with its args, to NEW. */
1097 new[to
++] = argv
[best
];
1098 for (i
= 0; i
< options
[best
]; i
++)
1099 new[to
++] = argv
[best
+ i
+ 1];
1101 /* Clear out this option in ARGV. */
1103 for (i
= 0; i
< options
[best
]; i
++)
1104 argv
[best
+ i
+ 1] = 0;
1107 bcopy (new, argv
, sizeof (char *) * argc
);
1110 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1111 "Exit the Emacs job and kill it.\n\
1112 If ARG is an integer, return ARG as the exit program code.\n\
1113 If ARG is a string, stuff it as keyboard input.\n\n\
1114 The value of `kill-emacs-hook', if not void,\n\
1115 is a list of functions (of no args),\n\
1116 all of which are called before Emacs is actually killed.")
1120 Lisp_Object hook
, hook1
;
1122 struct gcpro gcpro1
;
1129 if (!NILP (Vrun_hooks
) && !noninteractive
)
1130 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1134 /* Is it really necessary to do this deassign
1135 when we are going to exit anyway? */
1140 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1142 /* If we have an auto-save list file,
1143 kill it because we are exiting Emacs deliberately (not crashing).
1144 Do it after shut_down_emacs, which does an auto-save. */
1145 if (STRINGP (Vauto_save_list_file_name
))
1146 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1148 exit (INTEGERP (arg
) ? XINT (arg
)
1159 /* Perform an orderly shutdown of Emacs. Autosave any modified
1160 buffers, kill any child processes, clean up the terminal modes (if
1161 we're in the foreground), and other stuff like that. Don't perform
1162 any redisplay; this may be called when Emacs is shutting down in
1163 the background, or after its X connection has died.
1165 If SIG is a signal number, print a message for it.
1167 This is called by fatal signal handlers, X protocol error handlers,
1171 shut_down_emacs (sig
, no_x
, stuff
)
1175 /* Prevent running of hooks from now on. */
1178 /* If we are controlling the terminal, reset terminal modes */
1179 #ifdef EMACS_HAVE_TTY_PGRP
1181 int pgrp
= EMACS_GETPGRP (0);
1184 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1189 if (sig
&& sig
!= SIGTERM
)
1190 fprintf (stderr
, "Fatal error (%d).", sig
);
1198 stuff_buffered_input (stuff
);
1200 kill_buffer_processes (Qnil
);
1201 Fdo_auto_save (Qt
, Qnil
);
1203 #ifdef CLASH_DETECTION
1204 unlock_all_files ();
1208 kill_vms_processes ();
1211 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1212 #ifdef HAVE_X_WINDOWS
1213 /* It's not safe to call intern here. Maybe we are crashing. */
1214 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1215 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1216 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1218 Fx_close_current_connection ();
1219 #endif /* HAVE_X_WINDOWS */
1223 /* There is a tendency for a SIGIO signal to arrive within exit,
1224 and cause a SIGHUP because the input descriptor is already closed. */
1226 signal (SIGIO
, SIG_IGN
);
1236 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1237 "Dump current state of Emacs into data file FILENAME.\n\
1238 This function exists on systems that use HAVE_SHM.")
1240 Lisp_Object intoname
;
1242 extern char my_edata
[];
1245 CHECK_STRING (intoname
, 0);
1246 intoname
= Fexpand_file_name (intoname
, Qnil
);
1249 Vpurify_flag
= Qnil
;
1252 /* Tell malloc where start of impure now is */
1253 /* Also arrange for warnings when nearly out of space. */
1254 #ifndef SYSTEM_MALLOC
1255 memory_warnings (my_edata
, malloc_warning
);
1257 map_out_data (XSTRING (intoname
)->data
);
1264 #else /* not HAVE_SHM */
1266 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1267 "Dump current state of Emacs into executable file FILENAME.\n\
1268 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1269 This is used in the file `loadup.el' when building Emacs.\n\
1271 Bind `command-line-processed' to nil before dumping,\n\
1272 if you want the dumped Emacs to process its command line\n\
1273 and announce itself normally when it is run.")
1275 Lisp_Object intoname
, symname
;
1277 extern char my_edata
[];
1280 CHECK_STRING (intoname
, 0);
1281 intoname
= Fexpand_file_name (intoname
, Qnil
);
1282 if (!NILP (symname
))
1284 CHECK_STRING (symname
, 0);
1285 if (XSTRING (symname
)->size
)
1286 symname
= Fexpand_file_name (symname
, Qnil
);
1290 Vpurify_flag
= Qnil
;
1294 mapout_data (XSTRING (intoname
)->data
);
1296 /* Tell malloc where start of impure now is */
1297 /* Also arrange for warnings when nearly out of space. */
1298 #ifndef SYSTEM_MALLOC
1300 /* On Windows, this was done before dumping, and that once suffices.
1301 Meanwhile, my_edata is not valid on Windows. */
1302 memory_warnings (my_edata
, malloc_warning
);
1303 #endif /* not WINDOWSNT */
1305 unexec (XSTRING (intoname
)->data
,
1306 !NILP (symname
) ? XSTRING (symname
)->data
: 0, my_edata
, 0, 0);
1307 #endif /* not VMS */
1314 #endif /* not HAVE_SHM */
1316 #endif /* not CANNOT_DUMP */
1323 decode_env_path (evarname
, defalt
)
1324 char *evarname
, *defalt
;
1326 register char *path
, *p
;
1330 /* It's okay to use getenv here, because this function is only used
1331 to initialize variables when Emacs starts up, and isn't called
1334 path
= (char *) getenv (evarname
);
1342 p
= index (path
, SEPCHAR
);
1343 if (!p
) p
= path
+ strlen (path
);
1344 lpath
= Fcons (p
- path
? make_string (path
, p
- path
) : Qnil
,
1351 return Fnreverse (lpath
);
1358 defsubr (&Sdump_emacs_data
);
1360 defsubr (&Sdump_emacs
);
1364 defsubr (&Skill_emacs
);
1366 defsubr (&Sinvocation_name
);
1367 defsubr (&Sinvocation_directory
);
1369 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1370 "Args passed by shell to Emacs, as a list of strings.");
1372 DEFVAR_LISP ("system-type", &Vsystem_type
,
1373 "Value is symbol indicating type of operating system you are using.");
1374 Vsystem_type
= intern (SYSTEM_TYPE
);
1376 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1377 "Value is string indicating configuration Emacs was built for.");
1378 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1380 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1381 "String containing the configuration options Emacs was built with.");
1382 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1384 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1385 "Non-nil means Emacs is running without interactive terminal.");
1387 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1388 "Hook to be run whenever kill-emacs is called.\n\
1389 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1390 in other similar situations), functions placed on this hook should not\n\
1391 expect to be able to interact with the user. To ask for confirmation,\n\
1392 see `kill-emacs-query-functions' instead.");
1393 Vkill_emacs_hook
= Qnil
;
1395 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1396 "Priority for Emacs to run at.\n\
1397 This value is effective only if set before Emacs is dumped,\n\
1398 and only if the Emacs executable is installed with setuid to permit\n\
1399 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1400 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1401 before you compile Emacs, to enable the code for this feature.");
1404 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1405 "The program name that was used to run Emacs.\n\
1406 Any directory names are omitted.");
1408 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1409 "The directory in which the Emacs executable was found, to run it.\n\
1410 The value is nil if that directory's name is not known.");
1412 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1413 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1414 This is non-nil when we can't find those directories in their standard\n\
1415 installed locations, but we can find them\n\
1416 near where the Emacs executable was found.");
1417 Vinstallation_directory
= Qnil
;