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"
50 #include <sys/resource.h>
57 extern void malloc_warning ();
58 extern void set_time_zone_rule ();
59 extern char *index ();
60 extern char *strerror ();
62 /* Command line args from shell, as list of strings */
63 Lisp_Object Vcommand_line_args
;
65 /* The name under which Emacs was invoked, with any leading directory
67 Lisp_Object Vinvocation_name
;
69 /* The directory name from which Emacs was invoked. */
70 Lisp_Object Vinvocation_directory
;
72 /* The directory name in which to find subdirs such as lisp and etc.
73 nil means get them only from PATH_LOADSEARCH. */
74 Lisp_Object Vinstallation_directory
;
76 /* Hook run by `kill-emacs' before it does really anything. */
77 Lisp_Object Vkill_emacs_hook
;
79 /* Set nonzero after Emacs has started up the first time.
80 Prevents reinitialization of the Lisp world and keymaps
81 on subsequent starts. */
84 /* Variable whose value is symbol giving operating system type. */
85 Lisp_Object Vsystem_type
;
87 /* Variable whose value is string giving configuration built for. */
88 Lisp_Object Vsystem_configuration
;
90 /* Variable whose value is string giving configuration options,
91 for use when reporting bugs. */
92 Lisp_Object Vsystem_configuration_options
;
94 /* If non-zero, emacs should not attempt to use an window-specific code,
95 but instead should use the virtual terminal under which it was started */
96 int inhibit_window_system
;
98 /* If nonzero, set Emacs to run at this priority. This is also used
99 in child_setup and sys_suspend to make sure subshells run at normal
100 priority; Those functions have their own extern declaration. */
103 /* If non-zero a filter or a sentinel is running. Tested to save the match
104 data on the first attempt to change it inside asynchronous code. */
105 int running_asynch_code
;
109 extern int inherited_pgroup
;
112 #ifdef HAVE_X_WINDOWS
113 /* If non-zero, -d was specified, meaning we're using some window system. */
117 /* An address near the bottom of the stack.
118 Tells GC how to save a copy of the stack. */
121 #ifdef HAVE_WINDOW_SYSTEM
122 extern Lisp_Object Vwindow_system
;
123 #endif /* HAVE_WINDOW_SYSTEM */
125 extern Lisp_Object Vauto_save_list_file_name
;
127 #ifdef USG_SHARED_LIBRARIES
128 /* If nonzero, this is the place to put the end of the writable segment
131 unsigned int bss_end
= 0;
134 /* Nonzero means running Emacs without interactive terminal. */
138 /* Value of Lisp variable `noninteractive'.
139 Normally same as C variable `noninteractive'
140 but nothing terrible happens if user sets this one. */
144 /* Save argv and argc. */
148 static void sort_args ();
150 /* Signal code for the fatal signal that was received */
151 int fatal_error_code
;
153 /* Nonzero if handling a fatal error already */
154 int fatal_error_in_progress
;
156 /* Handle bus errors, illegal instruction, etc. */
158 fatal_error_signal (sig
)
161 fatal_error_code
= sig
;
162 signal (sig
, SIG_DFL
);
164 TOTALLY_UNBLOCK_INPUT
;
166 /* If fatal error occurs in code below, avoid infinite recursion. */
167 if (! fatal_error_in_progress
)
169 fatal_error_in_progress
= 1;
171 shut_down_emacs (sig
, 0, Qnil
);
175 LIB$
STOP (SS$_ABORT
);
177 /* Signal the same code; this time it will really be fatal.
178 Remember that since we're in a signal handler, the signal we're
179 going to send is probably blocked, so we have to unblock it if we
180 want to really receive it. */
182 sigunblock (sigmask (fatal_error_code
));
184 kill (getpid (), fatal_error_code
);
190 /* Handler for SIGDANGER. */
192 memory_warning_signal (sig
)
195 signal (sig
, memory_warning_signal
);
197 malloc_warning ("Operating system warns that virtual memory is running low.\n");
199 /* It might be unsafe to call do_auto_save now. */
200 force_auto_save_soon ();
204 /* Code for dealing with Lisp access to the Unix command line */
207 init_cmdargs (argc
, argv
, skip_args
)
213 Lisp_Object name
, dir
;
218 Vinvocation_name
= Ffile_name_nondirectory (build_string (argv
[0]));
219 Vinvocation_directory
= Ffile_name_directory (build_string (argv
[0]));
220 /* If we got no directory in argv[0], search PATH to find where
221 Emacs actually came from. */
222 if (NILP (Vinvocation_directory
))
225 int yes
= openp (Vexec_path
, Vinvocation_name
,
226 EXEC_SUFFIXES
, &found
, 1);
228 Vinvocation_directory
= Ffile_name_directory (found
);
231 if (!NILP (Vinvocation_directory
)
232 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
233 /* Emacs was started with relative path, like ./emacs */
234 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
236 Vinstallation_directory
= Qnil
;
238 if (!NILP (Vinvocation_directory
))
240 dir
= Vinvocation_directory
;
241 name
= Fexpand_file_name (Vinvocation_name
, dir
);
244 Lisp_Object tem
, lib_src_exists
;
245 Lisp_Object etc_exists
, info_exists
;
247 /* See if dir contains subdirs for use by Emacs.
248 Check for the ones that would exist in a build directory,
249 not including lisp and info. */
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 Vinstallation_directory
259 = Ffile_name_as_directory (dir
);
264 /* See if dir's parent contains those subdirs. */
265 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
266 lib_src_exists
= Ffile_exists_p (tem
);
267 if (!NILP (lib_src_exists
))
269 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
270 etc_exists
= Ffile_exists_p (tem
);
271 if (!NILP (etc_exists
))
273 tem
= Fexpand_file_name (build_string (".."), dir
);
274 Vinstallation_directory
275 = Ffile_name_as_directory (tem
);
280 /* If the Emacs executable is actually a link,
281 next try the dir that the link points into. */
282 tem
= Ffile_symlink_p (name
);
285 name
= Fexpand_file_name (tem
, dir
);
286 dir
= Ffile_name_directory (name
);
293 Vcommand_line_args
= Qnil
;
295 for (i
= argc
- 1; i
>= 0; i
--)
297 if (i
== 0 || i
> skip_args
)
299 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
303 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
304 "Return the program name that was used to run Emacs.\n\
305 Any directory names are omitted.")
308 return Fcopy_sequence (Vinvocation_name
);
311 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
313 "Return the directory name in which the Emacs executable was located")
316 return Fcopy_sequence (Vinvocation_directory
);
321 #ifdef LINK_CRTL_SHARE
322 #ifdef SHARABLE_LIB_BUG
323 extern noshare
char **environ
;
324 #endif /* SHARABLE_LIB_BUG */
325 #endif /* LINK_CRTL_SHARE */
329 /* A valid but unlikely value for the TZ environment value.
330 It is OK (though a bit slower) if the user actually chooses this value. */
331 static char dump_tz
[] = "UtC0";
334 #ifndef ORDINARY_LINK
335 /* We don't include crtbegin.o and crtend.o in the link,
336 so these functions and variables might be missed.
337 Provide dummy definitions to avoid error.
338 (We don't have any real constructors or destructors.) */
340 #ifndef GCC_CTORS_IN_LIBC
343 __do_global_ctors_aux ()
347 /* Linux has a bug in its library; avoid an error. */
349 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
351 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
352 #endif /* GCC_CTORS_IN_LIBC */
355 #endif /* __GNUC__ */
356 #endif /* ORDINARY_LINK */
358 /* Test whether the next argument in ARGV matches SSTR or a prefix of
359 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
360 (the argument is supposed to have a value) store in *VALPTR either
361 the next argument or the portion of this one after the equal sign.
362 ARGV is read starting at position *SKIPPTR; this index is advanced
363 by the number of arguments used.
365 Too bad we can't just use getopt for all of this, but we don't have
366 enough information to do it right. */
369 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
382 /* Don't access argv[argc]; give up in advance. */
383 if (argc
<= *skipptr
+ 1)
386 arg
= argv
[*skipptr
+1];
389 if (strcmp (arg
, sstr
) == 0)
393 *valptr
= argv
[*skipptr
+2];
400 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
401 ? p
- arg
: strlen (arg
));
402 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
404 else if (valptr
== NULL
)
415 else if (argv
[*skipptr
+2] != NULL
)
417 *valptr
= argv
[*skipptr
+2];
428 main (argc
, argv
, envp
)
433 char stack_bottom_variable
;
437 #ifdef HAVE_SETRLIMIT
441 #ifdef LINUX_SBRK_BUG
445 sort_args (argc
, argv
);
447 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
450 tem
= Fsymbol_value (intern ("emacs-version"));
453 fprintf (stderr
, "Invalid value of `emacs-version'\n");
458 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
463 /* Map in shared memory, if we are using that. */
465 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
468 /* The shared memory was just restored, which clobbered this. */
474 /* The shared memory was just restored, which clobbered this. */
481 extern int malloc_cookie
;
482 /* This helps out unexnext.c. */
484 if (malloc_jumpstart (malloc_cookie
) != 0)
485 printf ("malloc jumpstart failed!\n");
490 /* If -map specified, map the data file in */
493 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
497 #ifdef LINK_CRTL_SHARE
498 #ifdef SHARABLE_LIB_BUG
499 /* Bletcherous shared libraries! */
501 stdin
= fdopen (0, "r");
503 stdout
= fdopen (1, "w");
505 stderr
= fdopen (2, "w");
508 #endif /* SHARABLE_LIB_BUG */
509 #endif /* LINK_CRTL_SHARE */
512 #ifdef HAVE_SETRLIMIT
513 /* Extend the stack space available. */
514 if (!getrlimit (RLIMIT_STACK
, &rlim
))
516 rlim
.rlim_cur
= rlim
.rlim_max
;
517 setrlimit (RLIMIT_STACK
, &rlim
);
521 /* Record (approximately) where the stack begins. */
522 stack_bottom
= &stack_bottom_variable
;
524 #ifdef RUN_TIME_REMAP
526 run_time_remap (argv
[0]);
529 #ifdef USG_SHARED_LIBRARIES
531 brk ((void *)bss_end
);
536 #ifndef SYSTEM_MALLOC
539 /* Arrange to get warning messages as memory fills up. */
540 memory_warnings (0, malloc_warning
);
542 /* Arrange to disable interrupt input while malloc and friends are
544 uninterrupt_malloc ();
546 #endif /* not SYSTEM_MALLOC */
549 /* We do all file input/output as binary files. When we need to translate
550 newlines, we do that manually. */
554 if (!isatty (fileno (stdin
)))
555 setmode (fileno (stdin
), O_BINARY
);
556 if (!isatty (fileno (stdout
)))
559 setmode (fileno (stdout
), O_BINARY
);
561 #else /* not __DJGPP__ >= 2 */
562 (stdin
)->_flag
&= ~_IOTEXT
;
563 (stdout
)->_flag
&= ~_IOTEXT
;
564 (stderr
)->_flag
&= ~_IOTEXT
;
565 #endif /* not __DJGPP__ >= 2 */
568 #ifdef SET_EMACS_PRIORITY
570 nice (emacs_priority
);
572 #endif /* SET_EMACS_PRIORITY */
574 #ifdef EXTRA_INITIALIZE
578 inhibit_window_system
= 0;
580 /* Handle the -t switch, which specifies filename to use as terminal */
583 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
588 result
= open (term
, O_RDWR
, 2 );
591 char *errstring
= strerror (errno
);
592 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
598 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
601 fprintf (stderr
, "Using %s\n", term
);
602 #ifdef HAVE_WINDOW_SYSTEM
603 inhibit_window_system
= 1; /* -t => -nw */
607 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
608 inhibit_window_system
= 1;
610 /* Handle the -batch switch, which means don't do interactive display. */
612 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
615 /* Handle the --help option, which gives a usage message.. */
616 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
619 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
620 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
621 [--version] [--no-site-file]\n\
622 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
623 [+linenum] file-to-visit [--kill]\n\
624 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
625 the Bugs section of the Emacs manual or the file BUGS.", argv
[0]);
629 #ifdef HAVE_X_WINDOWS
630 /* Stupid kludge to catch command-line display spec. We can't
631 handle this argument entirely in window system dependent code
632 because we don't even know which window system dependent code
633 to run until we've recognized this argument. */
635 char *displayname
= 0;
637 int count_before
= skip_args
;
639 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
641 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
644 /* If we have the form --display=NAME,
645 convert it into -d name.
646 This requires inserting a new element into argv. */
647 if (displayname
!= 0 && skip_args
- count_before
== 1)
649 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
652 for (j
= 0; j
< count_before
+ 1; j
++)
654 new[count_before
+ 1] = "-d";
655 new[count_before
+ 2] = displayname
;
656 for (j
= count_before
+ 2; j
<argc
; j
++)
657 new[j
+ 1] = argv
[j
];
661 /* Change --display to -d, when its arg is separate. */
662 else if (displayname
!= 0 && skip_args
> count_before
663 && argv
[count_before
+ 1][1] == '-')
664 argv
[count_before
+ 1] = "-d";
666 /* Don't actually discard this arg. */
667 skip_args
= count_before
;
671 if (! noninteractive
)
676 inherited_pgroup
= EMACS_GETPGRP (0);
677 setpgrp (0, getpid ());
680 #if defined (USG5) && defined (INTERRUPT_INPUT)
690 /* Don't catch SIGHUP if dumping. */
697 sigblock (sigmask (SIGHUP
));
698 /* In --batch mode, don't catch SIGHUP if already ignored.
699 That makes nohup work. */
701 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
702 signal (SIGHUP
, fatal_error_signal
);
703 sigunblock (sigmask (SIGHUP
));
708 ! noninteractive
|| initialized
714 /* Don't catch these signals in batch mode if dumping.
715 On some machines, this sets static data that would make
716 signal fail to work right when the dumped Emacs is run. */
717 signal (SIGQUIT
, fatal_error_signal
);
718 signal (SIGILL
, fatal_error_signal
);
719 signal (SIGTRAP
, fatal_error_signal
);
721 signal (SIGABRT
, fatal_error_signal
);
724 signal (SIGHWE
, fatal_error_signal
);
727 signal (SIGPRE
, fatal_error_signal
);
730 signal (SIGORE
, fatal_error_signal
);
733 signal (SIGUME
, fatal_error_signal
);
736 signal (SIGDLK
, fatal_error_signal
);
739 signal (SIGCPULIM
, fatal_error_signal
);
742 /* This is missing on some systems - OS/2, for example. */
743 signal (SIGIOT
, fatal_error_signal
);
746 signal (SIGEMT
, fatal_error_signal
);
748 signal (SIGFPE
, fatal_error_signal
);
750 signal (SIGBUS
, fatal_error_signal
);
752 signal (SIGSEGV
, fatal_error_signal
);
754 signal (SIGSYS
, fatal_error_signal
);
756 signal (SIGTERM
, fatal_error_signal
);
758 signal (SIGXCPU
, fatal_error_signal
);
761 signal (SIGXFSZ
, fatal_error_signal
);
765 /* This just means available memory is getting low. */
766 signal (SIGDANGER
, memory_warning_signal
);
770 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
771 signal (SIGXCPU
, fatal_error_signal
);
773 signal (SIGIOINT
, fatal_error_signal
);
775 signal (SIGGRANT
, fatal_error_signal
);
776 signal (SIGRETRACT
, fatal_error_signal
);
777 signal (SIGSOUND
, fatal_error_signal
);
778 signal (SIGMSG
, fatal_error_signal
);
782 noninteractive1
= noninteractive
;
784 /* Perform basic initializations (not merely interning symbols) */
791 init_syntax_once (); /* Create standard syntax table. */
792 /* Must be done before init_buffer */
793 init_casetab_once ();
794 init_buffer_once (); /* Create buffer table and some buffers */
795 init_minibuf_once (); /* Create list of minibuffers */
796 /* Must precede init_window_once */
797 init_window_once (); /* Init the window system */
803 running_asynch_code
= 0;
806 /* Call early 'cause init_environment needs it. */
808 /* Set defaults for several environment variables. */
810 init_environment (argc
, argv
, skip_args
);
816 /* Initialize environment from registry settings. */
818 init_ntproc (); /* must precede init_editfns */
821 /* egetenv is a pretty low-level facility, which may get called in
822 many circumstances; it seems flimsy to put off initializing it
823 until calling init_callproc. */
824 set_process_environment ();
825 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
826 if this is not done. Do it after set_process_environment so that we
827 don't pollute Vprocess_environment. */
832 init_buffer (); /* Init default directory of main buffer */
834 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
835 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
836 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
842 init_vms_input ();/* init_display calls get_frame_size, that needs this */
844 init_display (); /* Determine terminal type. init_sys_modes uses results */
846 init_keyboard (); /* This too must precede init_sys_modes */
848 init_vmsproc (); /* And this too. */
850 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
854 #ifdef LISP_FLOAT_TYPE
861 #ifdef CLASH_DETECTION
863 #endif /* CLASH_DETECTION */
865 /* Intern the names of all standard functions and variables; define standard keys */
869 /* The basic levels of Lisp must come first */
870 /* And data must come first of all
871 for the sake of symbols like error-message */
884 syms_of_casefiddle ();
888 #ifndef NO_DIR_LIBRARY
890 #endif /* not NO_DIR_LIBRARY */
896 #ifdef CLASH_DETECTION
898 #endif /* CLASH_DETECTION */
913 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
920 #endif /* WINDOWSNT */
923 #ifdef HAVE_X_WINDOWS
930 #endif /* HAVE_X_WINDOWS */
932 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
941 syms_of_win32term ();
943 syms_of_win32faces ();
944 syms_of_win32select ();
945 syms_of_win32menu ();
946 #endif /* HAVE_NTGUI */
956 keys_of_casefiddle ();
970 /* Handle -l loadup-and-dump, args passed by Makefile. */
971 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
972 Vtop_level
= Fcons (intern ("load"),
973 Fcons (build_string (file
), Qnil
));
975 /* Unless next switch is -nl, load "loadup.el" first thing. */
976 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
977 Vtop_level
= Fcons (intern ("load"),
978 Fcons (build_string ("loadup.el"), Qnil
));
979 #endif /* CANNOT_DUMP */
984 /* Erase any pre-dump messages in the message log, to avoid confusion */
985 Lisp_Object old_log_max
;
986 old_log_max
= Vmessage_log_max
;
987 XSETFASTINT (Vmessage_log_max
, 0);
988 message_dolog ("", 0, 1);
989 Vmessage_log_max
= old_log_max
;
993 /* If the execution TZ happens to be the same as the dump TZ,
994 change it to some other value and then change it back,
995 to force the underlying implementation to reload the TZ info.
996 This is needed on implementations that load TZ info from files,
997 since the TZ file contents may differ between dump and execution. */
998 char *tz
= getenv ("TZ");
999 if (tz
&& !strcmp (tz
, dump_tz
))
1011 #ifdef LOCALTIME_CACHE
1012 /* Some versions of localtime have a bug. They cache the value of the time
1013 zone rather than looking it up every time. Since localtime() is
1014 called to bolt the undumping time into the undumped emacs, this
1015 results in localtime ignoring the TZ environment variable.
1016 This flushes the new TZ value into localtime. */
1018 #endif /* defined (LOCALTIME_CACHE) */
1020 /* Enter editor command loop. This never returns. */
1025 /* Sort the args so we can find the most important ones
1026 at the beginning of argv. */
1028 /* First, here's a table of all the standard options. */
1030 struct standard_args
1038 struct standard_args standard_args
[] =
1040 { "-version", "--version", 110, 0 },
1041 { "-help", "--help", 110, 0 },
1042 { "-nl", "--no-shared-memory", 100, 0 },
1044 { "-map", "--map-data", 100, 0 },
1046 { "-t", "--terminal", 90, 1 },
1047 { "-d", "--display", 80, 1 },
1048 { "-display", 0, 80, 1 },
1049 { "-nw", "--no-windows", 70, 0 },
1050 { "-batch", "--batch", 60, 0 },
1051 { "-q", "--no-init-file", 50, 0 },
1052 { "-no-init-file", 0, 50, 0 },
1053 { "-no-site-file", "--no-site-file", 40, 0 },
1054 { "-u", "--user", 30, 1 },
1055 { "-user", 0, 30, 1 },
1056 { "-debug-init", "--debug-init", 20, 0 },
1057 { "-i", "--icon-type", 15, 0 },
1058 { "-itype", 0, 15, 0 },
1059 { "-iconic", "--iconic", 15, 0 },
1060 { "-bg", "--background-color", 10, 1 },
1061 { "-background", 0, 10, 1 },
1062 { "-fg", "--foreground-color", 10, 1 },
1063 { "-foreground", 0, 10, 1 },
1064 { "-bd", "--border-color", 10, 1 },
1065 { "-bw", "--border-width", 10, 1 },
1066 { "-ib", "--internal-border", 10, 1 },
1067 { "-ms", "--mouse-color", 10, 1 },
1068 { "-cr", "--cursor-color", 10, 1 },
1069 { "-fn", "--font", 10, 1 },
1070 { "-font", 0, 10, 1 },
1071 { "-g", "--geometry", 10, 1 },
1072 { "-geometry", 0, 10, 1 },
1073 { "-T", "--title", 10, 1 },
1074 { "-title", 0, 10, 1 },
1075 { "-name", "--name", 10, 1 },
1076 { "-xrm", "--xrm", 10, 1 },
1077 { "-r", "--reverse-video", 5, 0 },
1079 { "-reverse", 0, 5, 0 },
1080 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1081 { "-vb", "--vertical-scroll-bars", 5, 0 },
1082 /* These have the same priority as ordinary file name args,
1083 so they are not reordered with respect to those. */
1084 { "-L", "--directory", 0, 1 },
1085 { "-directory", 0, 0, 1 },
1086 { "-l", "--load", 0, 1 },
1087 { "-load", 0, 0, 1 },
1088 { "-f", "--funcall", 0, 1 },
1089 { "-funcall", 0, 0, 1 },
1090 { "-eval", "--eval", 0, 1 },
1091 { "-insert", "--insert", 0, 1 },
1092 /* This should be processed after ordinary file name args and the like. */
1093 { "-kill", "--kill", -10, 0 },
1096 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1097 so that the highest priority ones come first.
1098 Do not change the order of elements of equal priority.
1099 If an option takes an argument, keep it and its argument together. */
1102 sort_args (argc
, argv
)
1106 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1107 /* For each element of argv,
1108 the corresponding element of options is:
1109 0 for an option that takes no arguments,
1110 1 for an option that takes one argument, etc.
1111 -1 for an ordinary non-option argument. */
1112 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1113 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1117 int end_of_options
= argc
;
1119 /* Categorize all the options,
1120 and figure out which argv elts are option arguments. */
1121 for (from
= 1; from
< argc
; from
++)
1125 if (argv
[from
][0] == '-')
1130 /* If we have found "--", don't consider
1131 any more arguments as options. */
1132 if (argv
[from
][1] == '-')
1134 /* Leave the "--", and everything following it, at the end. */
1135 for (; from
< argc
; from
++)
1137 priority
[from
] = -100;
1143 /* Look for a match with a known old-fashioned option. */
1144 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1145 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1147 options
[from
] = standard_args
[i
].nargs
;
1148 priority
[from
] = standard_args
[i
].priority
;
1149 if (from
+ standard_args
[i
].nargs
>= argc
)
1150 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1151 from
+= standard_args
[i
].nargs
;
1155 /* Look for a match with a known long option.
1156 MATCH is -1 if no match so far, -2 if two or more matches so far,
1157 >= 0 (the table index of the match) if just one match so far. */
1158 if (argv
[from
][1] == '-')
1161 thislen
= strlen (argv
[from
]);
1162 equals
= index (argv
[from
], '=');
1164 thislen
= equals
- argv
[from
];
1167 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1168 if (standard_args
[i
].longname
1169 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1178 /* If we found exactly one match, use that. */
1181 options
[from
] = standard_args
[match
].nargs
;
1182 priority
[from
] = standard_args
[match
].priority
;
1183 /* If --OPTION=VALUE syntax is used,
1184 this option uses just one argv element. */
1187 if (from
+ options
[from
] >= argc
)
1188 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1189 from
+= options
[from
];
1196 /* Copy the arguments, in order of decreasing priority, to NEW. */
1201 int best_priority
= -9999;
1203 /* Find the highest priority remaining option.
1204 If several have equal priority, take the first of them. */
1205 for (from
= 1; from
< argc
; from
++)
1207 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1209 best_priority
= priority
[from
];
1212 /* Skip option arguments--they are tied to the options. */
1213 if (options
[from
] > 0)
1214 from
+= options
[from
];
1220 /* Copy the highest priority remaining option, with its args, to NEW. */
1221 new[to
++] = argv
[best
];
1222 for (i
= 0; i
< options
[best
]; i
++)
1223 new[to
++] = argv
[best
+ i
+ 1];
1225 /* Clear out this option in ARGV. */
1227 for (i
= 0; i
< options
[best
]; i
++)
1228 argv
[best
+ i
+ 1] = 0;
1231 bcopy (new, argv
, sizeof (char *) * argc
);
1234 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1235 "Exit the Emacs job and kill it.\n\
1236 If ARG is an integer, return ARG as the exit program code.\n\
1237 If ARG is a string, stuff it as keyboard input.\n\n\
1238 The value of `kill-emacs-hook', if not void,\n\
1239 is a list of functions (of no args),\n\
1240 all of which are called before Emacs is actually killed.")
1244 Lisp_Object hook
, hook1
;
1246 struct gcpro gcpro1
;
1253 if (!NILP (Vrun_hooks
) && !noninteractive
)
1254 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1258 /* Is it really necessary to do this deassign
1259 when we are going to exit anyway? */
1264 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1266 /* If we have an auto-save list file,
1267 kill it because we are exiting Emacs deliberately (not crashing).
1268 Do it after shut_down_emacs, which does an auto-save. */
1269 if (STRINGP (Vauto_save_list_file_name
))
1270 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1272 exit (INTEGERP (arg
) ? XINT (arg
)
1283 /* Perform an orderly shutdown of Emacs. Autosave any modified
1284 buffers, kill any child processes, clean up the terminal modes (if
1285 we're in the foreground), and other stuff like that. Don't perform
1286 any redisplay; this may be called when Emacs is shutting down in
1287 the background, or after its X connection has died.
1289 If SIG is a signal number, print a message for it.
1291 This is called by fatal signal handlers, X protocol error handlers,
1295 shut_down_emacs (sig
, no_x
, stuff
)
1299 /* Prevent running of hooks from now on. */
1302 /* If we are controlling the terminal, reset terminal modes */
1303 #ifdef EMACS_HAVE_TTY_PGRP
1305 int pgrp
= EMACS_GETPGRP (0);
1308 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1313 if (sig
&& sig
!= SIGTERM
)
1314 fprintf (stderr
, "Fatal error (%d).", sig
);
1322 stuff_buffered_input (stuff
);
1324 kill_buffer_processes (Qnil
);
1325 Fdo_auto_save (Qt
, Qnil
);
1327 #ifdef CLASH_DETECTION
1328 unlock_all_files ();
1332 kill_vms_processes ();
1335 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1336 #ifdef HAVE_X_WINDOWS
1337 /* It's not safe to call intern here. Maybe we are crashing. */
1338 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1339 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1340 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1342 Fx_close_current_connection ();
1343 #endif /* HAVE_X_WINDOWS */
1347 /* There is a tendency for a SIGIO signal to arrive within exit,
1348 and cause a SIGHUP because the input descriptor is already closed. */
1350 signal (SIGIO
, SIG_IGN
);
1364 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1365 "Dump current state of Emacs into data file FILENAME.\n\
1366 This function exists on systems that use HAVE_SHM.")
1368 Lisp_Object filename
;
1370 extern char my_edata
[];
1373 CHECK_STRING (filename
, 0);
1374 filename
= Fexpand_file_name (filename
, Qnil
);
1377 Vpurify_flag
= Qnil
;
1380 /* Tell malloc where start of impure now is */
1381 /* Also arrange for warnings when nearly out of space. */
1382 #ifndef SYSTEM_MALLOC
1383 memory_warnings (my_edata
, malloc_warning
);
1385 map_out_data (XSTRING (filename
)->data
);
1392 #else /* not HAVE_SHM */
1394 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1395 "Dump current state of Emacs into executable file FILENAME.\n\
1396 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1397 This is used in the file `loadup.el' when building Emacs.\n\
1399 Bind `command-line-processed' to nil before dumping,\n\
1400 if you want the dumped Emacs to process its command line\n\
1401 and announce itself normally when it is run.")
1403 Lisp_Object filename
, symfile
;
1405 extern char my_edata
[];
1408 CHECK_STRING (filename
, 0);
1409 filename
= Fexpand_file_name (filename
, Qnil
);
1410 if (!NILP (symfile
))
1412 CHECK_STRING (symfile
, 0);
1413 if (XSTRING (symfile
)->size
)
1414 symfile
= Fexpand_file_name (symfile
, Qnil
);
1418 Vpurify_flag
= Qnil
;
1421 set_time_zone_rule (dump_tz
);
1422 #ifndef LOCALTIME_CACHE
1423 /* Force a tz reload, since set_time_zone_rule doesn't. */
1430 mapout_data (XSTRING (filename
)->data
);
1432 /* Tell malloc where start of impure now is */
1433 /* Also arrange for warnings when nearly out of space. */
1434 #ifndef SYSTEM_MALLOC
1436 /* On Windows, this was done before dumping, and that once suffices.
1437 Meanwhile, my_edata is not valid on Windows. */
1438 memory_warnings (my_edata
, malloc_warning
);
1439 #endif /* not WINDOWSNT */
1441 unexec (XSTRING (filename
)->data
,
1442 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1443 #endif /* not VMS */
1450 #endif /* not HAVE_SHM */
1452 #endif /* not CANNOT_DUMP */
1459 decode_env_path (evarname
, defalt
)
1460 char *evarname
, *defalt
;
1462 register char *path
, *p
;
1466 /* It's okay to use getenv here, because this function is only used
1467 to initialize variables when Emacs starts up, and isn't called
1470 path
= (char *) getenv (evarname
);
1478 p
= index (path
, SEPCHAR
);
1479 if (!p
) p
= path
+ strlen (path
);
1480 lpath
= Fcons (p
- path
? make_string (path
, p
- path
)
1481 : build_string ("."),
1488 return Fnreverse (lpath
);
1495 defsubr (&Sdump_emacs_data
);
1497 defsubr (&Sdump_emacs
);
1501 defsubr (&Skill_emacs
);
1503 defsubr (&Sinvocation_name
);
1504 defsubr (&Sinvocation_directory
);
1506 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1507 "Args passed by shell to Emacs, as a list of strings.");
1509 DEFVAR_LISP ("system-type", &Vsystem_type
,
1510 "Value is symbol indicating type of operating system you are using.");
1511 Vsystem_type
= intern (SYSTEM_TYPE
);
1513 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1514 "Value is string indicating configuration Emacs was built for.");
1515 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1517 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1518 "String containing the configuration options Emacs was built with.");
1519 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1521 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1522 "Non-nil means Emacs is running without interactive terminal.");
1524 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1525 "Hook to be run whenever kill-emacs is called.\n\
1526 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1527 in other similar situations), functions placed on this hook should not\n\
1528 expect to be able to interact with the user. To ask for confirmation,\n\
1529 see `kill-emacs-query-functions' instead.");
1530 Vkill_emacs_hook
= Qnil
;
1532 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1533 "Priority for Emacs to run at.\n\
1534 This value is effective only if set before Emacs is dumped,\n\
1535 and only if the Emacs executable is installed with setuid to permit\n\
1536 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1537 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1538 before you compile Emacs, to enable the code for this feature.");
1541 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1542 "The program name that was used to run Emacs.\n\
1543 Any directory names are omitted.");
1545 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1546 "The directory in which the Emacs executable was found, to run it.\n\
1547 The value is nil if that directory's name is not known.");
1549 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1550 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1551 This is non-nil when we can't find those directories in their standard\n\
1552 installed locations, but we can find them\n\
1553 near where the Emacs executable was found.");
1554 Vinstallation_directory
= Qnil
;