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
);
459 printf ("Copyright (C) 1996 Free Software Foundation, Inc.\n");
460 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
461 printf ("You may redistribute copies of Emacs\n");
462 printf ("under the terms of the GNU General Public License.\n");
463 printf ("For more information about these matters, ");
464 printf ("see the files named COPYING.\n");
469 /* Map in shared memory, if we are using that. */
471 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
474 /* The shared memory was just restored, which clobbered this. */
480 /* The shared memory was just restored, which clobbered this. */
487 extern int malloc_cookie
;
488 /* This helps out unexnext.c. */
490 if (malloc_jumpstart (malloc_cookie
) != 0)
491 printf ("malloc jumpstart failed!\n");
496 /* If -map specified, map the data file in */
499 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
503 #ifdef LINK_CRTL_SHARE
504 #ifdef SHARABLE_LIB_BUG
505 /* Bletcherous shared libraries! */
507 stdin
= fdopen (0, "r");
509 stdout
= fdopen (1, "w");
511 stderr
= fdopen (2, "w");
514 #endif /* SHARABLE_LIB_BUG */
515 #endif /* LINK_CRTL_SHARE */
518 #ifdef HAVE_SETRLIMIT
519 /* Extend the stack space available. */
520 if (!getrlimit (RLIMIT_STACK
, &rlim
))
522 rlim
.rlim_cur
= rlim
.rlim_max
;
523 setrlimit (RLIMIT_STACK
, &rlim
);
527 /* Record (approximately) where the stack begins. */
528 stack_bottom
= &stack_bottom_variable
;
530 #ifdef RUN_TIME_REMAP
532 run_time_remap (argv
[0]);
535 #ifdef USG_SHARED_LIBRARIES
537 brk ((void *)bss_end
);
542 #ifndef SYSTEM_MALLOC
545 /* Arrange to get warning messages as memory fills up. */
546 memory_warnings (0, malloc_warning
);
548 /* Arrange to disable interrupt input while malloc and friends are
550 uninterrupt_malloc ();
552 #endif /* not SYSTEM_MALLOC */
555 /* We do all file input/output as binary files. When we need to translate
556 newlines, we do that manually. */
560 if (!isatty (fileno (stdin
)))
561 setmode (fileno (stdin
), O_BINARY
);
562 if (!isatty (fileno (stdout
)))
565 setmode (fileno (stdout
), O_BINARY
);
567 #else /* not __DJGPP__ >= 2 */
568 (stdin
)->_flag
&= ~_IOTEXT
;
569 (stdout
)->_flag
&= ~_IOTEXT
;
570 (stderr
)->_flag
&= ~_IOTEXT
;
571 #endif /* not __DJGPP__ >= 2 */
574 #ifdef SET_EMACS_PRIORITY
576 nice (emacs_priority
);
578 #endif /* SET_EMACS_PRIORITY */
580 #ifdef EXTRA_INITIALIZE
584 inhibit_window_system
= 0;
586 /* Handle the -t switch, which specifies filename to use as terminal */
589 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
594 result
= open (term
, O_RDWR
, 2 );
597 char *errstring
= strerror (errno
);
598 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
604 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
607 fprintf (stderr
, "Using %s\n", term
);
608 #ifdef HAVE_WINDOW_SYSTEM
609 inhibit_window_system
= 1; /* -t => -nw */
613 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
614 inhibit_window_system
= 1;
616 /* Handle the -batch switch, which means don't do interactive display. */
618 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
621 /* Handle the --help option, which gives a usage message.. */
622 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
625 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
626 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
627 [--version] [--no-site-file]\n\
628 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
629 [+linenum] file-to-visit [--kill]\n\
630 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
631 the Bugs section of the Emacs manual or the file BUGS.", argv
[0]);
635 #ifdef HAVE_X_WINDOWS
636 /* Stupid kludge to catch command-line display spec. We can't
637 handle this argument entirely in window system dependent code
638 because we don't even know which window system dependent code
639 to run until we've recognized this argument. */
641 char *displayname
= 0;
643 int count_before
= skip_args
;
645 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
647 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
650 /* If we have the form --display=NAME,
651 convert it into -d name.
652 This requires inserting a new element into argv. */
653 if (displayname
!= 0 && skip_args
- count_before
== 1)
655 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
658 for (j
= 0; j
< count_before
+ 1; j
++)
660 new[count_before
+ 1] = "-d";
661 new[count_before
+ 2] = displayname
;
662 for (j
= count_before
+ 2; j
<argc
; j
++)
663 new[j
+ 1] = argv
[j
];
667 /* Change --display to -d, when its arg is separate. */
668 else if (displayname
!= 0 && skip_args
> count_before
669 && argv
[count_before
+ 1][1] == '-')
670 argv
[count_before
+ 1] = "-d";
672 /* Don't actually discard this arg. */
673 skip_args
= count_before
;
677 if (! noninteractive
)
682 inherited_pgroup
= EMACS_GETPGRP (0);
683 setpgrp (0, getpid ());
686 #if defined (USG5) && defined (INTERRUPT_INPUT)
696 /* Don't catch SIGHUP if dumping. */
703 sigblock (sigmask (SIGHUP
));
704 /* In --batch mode, don't catch SIGHUP if already ignored.
705 That makes nohup work. */
707 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
708 signal (SIGHUP
, fatal_error_signal
);
709 sigunblock (sigmask (SIGHUP
));
714 ! noninteractive
|| initialized
720 /* Don't catch these signals in batch mode if dumping.
721 On some machines, this sets static data that would make
722 signal fail to work right when the dumped Emacs is run. */
723 signal (SIGQUIT
, fatal_error_signal
);
724 signal (SIGILL
, fatal_error_signal
);
725 signal (SIGTRAP
, fatal_error_signal
);
727 signal (SIGABRT
, fatal_error_signal
);
730 signal (SIGHWE
, fatal_error_signal
);
733 signal (SIGPRE
, fatal_error_signal
);
736 signal (SIGORE
, fatal_error_signal
);
739 signal (SIGUME
, fatal_error_signal
);
742 signal (SIGDLK
, fatal_error_signal
);
745 signal (SIGCPULIM
, fatal_error_signal
);
748 /* This is missing on some systems - OS/2, for example. */
749 signal (SIGIOT
, fatal_error_signal
);
752 signal (SIGEMT
, fatal_error_signal
);
754 signal (SIGFPE
, fatal_error_signal
);
756 signal (SIGBUS
, fatal_error_signal
);
758 signal (SIGSEGV
, fatal_error_signal
);
760 signal (SIGSYS
, fatal_error_signal
);
762 signal (SIGTERM
, fatal_error_signal
);
764 signal (SIGXCPU
, fatal_error_signal
);
767 signal (SIGXFSZ
, fatal_error_signal
);
771 /* This just means available memory is getting low. */
772 signal (SIGDANGER
, memory_warning_signal
);
776 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
777 signal (SIGXCPU
, fatal_error_signal
);
779 signal (SIGIOINT
, fatal_error_signal
);
781 signal (SIGGRANT
, fatal_error_signal
);
782 signal (SIGRETRACT
, fatal_error_signal
);
783 signal (SIGSOUND
, fatal_error_signal
);
784 signal (SIGMSG
, fatal_error_signal
);
788 noninteractive1
= noninteractive
;
790 /* Perform basic initializations (not merely interning symbols) */
797 init_syntax_once (); /* Create standard syntax table. */
798 /* Must be done before init_buffer */
799 init_casetab_once ();
800 init_buffer_once (); /* Create buffer table and some buffers */
801 init_minibuf_once (); /* Create list of minibuffers */
802 /* Must precede init_window_once */
803 init_window_once (); /* Init the window system */
809 running_asynch_code
= 0;
812 /* Call early 'cause init_environment needs it. */
814 /* Set defaults for several environment variables. */
816 init_environment (argc
, argv
, skip_args
);
822 /* Initialize environment from registry settings. */
824 init_ntproc (); /* must precede init_editfns */
827 /* egetenv is a pretty low-level facility, which may get called in
828 many circumstances; it seems flimsy to put off initializing it
829 until calling init_callproc. */
830 set_process_environment ();
831 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
832 if this is not done. Do it after set_process_environment so that we
833 don't pollute Vprocess_environment. */
838 init_buffer (); /* Init default directory of main buffer */
840 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
841 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
842 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
848 init_vms_input ();/* init_display calls get_frame_size, that needs this */
850 init_display (); /* Determine terminal type. init_sys_modes uses results */
852 init_keyboard (); /* This too must precede init_sys_modes */
854 init_vmsproc (); /* And this too. */
856 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
860 #ifdef LISP_FLOAT_TYPE
867 #ifdef CLASH_DETECTION
869 #endif /* CLASH_DETECTION */
871 /* Intern the names of all standard functions and variables; define standard keys */
875 /* The basic levels of Lisp must come first */
876 /* And data must come first of all
877 for the sake of symbols like error-message */
890 syms_of_casefiddle ();
894 #ifndef NO_DIR_LIBRARY
896 #endif /* not NO_DIR_LIBRARY */
902 #ifdef CLASH_DETECTION
904 #endif /* CLASH_DETECTION */
919 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
926 #endif /* WINDOWSNT */
929 #ifdef HAVE_X_WINDOWS
936 #endif /* HAVE_X_WINDOWS */
938 #if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
947 syms_of_win32term ();
949 syms_of_win32faces ();
950 syms_of_win32select ();
951 syms_of_win32menu ();
952 #endif /* HAVE_NTGUI */
962 keys_of_casefiddle ();
976 /* Handle -l loadup-and-dump, args passed by Makefile. */
977 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
978 Vtop_level
= Fcons (intern ("load"),
979 Fcons (build_string (file
), Qnil
));
981 /* Unless next switch is -nl, load "loadup.el" first thing. */
982 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
983 Vtop_level
= Fcons (intern ("load"),
984 Fcons (build_string ("loadup.el"), Qnil
));
985 #endif /* CANNOT_DUMP */
990 /* Erase any pre-dump messages in the message log, to avoid confusion */
991 Lisp_Object old_log_max
;
992 old_log_max
= Vmessage_log_max
;
993 XSETFASTINT (Vmessage_log_max
, 0);
994 message_dolog ("", 0, 1);
995 Vmessage_log_max
= old_log_max
;
999 /* If the execution TZ happens to be the same as the dump TZ,
1000 change it to some other value and then change it back,
1001 to force the underlying implementation to reload the TZ info.
1002 This is needed on implementations that load TZ info from files,
1003 since the TZ file contents may differ between dump and execution. */
1004 char *tz
= getenv ("TZ");
1005 if (tz
&& !strcmp (tz
, dump_tz
))
1017 #ifdef LOCALTIME_CACHE
1018 /* Some versions of localtime have a bug. They cache the value of the time
1019 zone rather than looking it up every time. Since localtime() is
1020 called to bolt the undumping time into the undumped emacs, this
1021 results in localtime ignoring the TZ environment variable.
1022 This flushes the new TZ value into localtime. */
1024 #endif /* defined (LOCALTIME_CACHE) */
1026 /* Enter editor command loop. This never returns. */
1031 /* Sort the args so we can find the most important ones
1032 at the beginning of argv. */
1034 /* First, here's a table of all the standard options. */
1036 struct standard_args
1044 struct standard_args standard_args
[] =
1046 { "-version", "--version", 110, 0 },
1047 { "-help", "--help", 110, 0 },
1048 { "-nl", "--no-shared-memory", 100, 0 },
1050 { "-map", "--map-data", 100, 0 },
1052 { "-t", "--terminal", 90, 1 },
1053 { "-d", "--display", 80, 1 },
1054 { "-display", 0, 80, 1 },
1055 { "-nw", "--no-windows", 70, 0 },
1056 { "-batch", "--batch", 60, 0 },
1057 { "-q", "--no-init-file", 50, 0 },
1058 { "-no-init-file", 0, 50, 0 },
1059 { "-no-site-file", "--no-site-file", 40, 0 },
1060 { "-u", "--user", 30, 1 },
1061 { "-user", 0, 30, 1 },
1062 { "-debug-init", "--debug-init", 20, 0 },
1063 { "-i", "--icon-type", 15, 0 },
1064 { "-itype", 0, 15, 0 },
1065 { "-iconic", "--iconic", 15, 0 },
1066 { "-bg", "--background-color", 10, 1 },
1067 { "-background", 0, 10, 1 },
1068 { "-fg", "--foreground-color", 10, 1 },
1069 { "-foreground", 0, 10, 1 },
1070 { "-bd", "--border-color", 10, 1 },
1071 { "-bw", "--border-width", 10, 1 },
1072 { "-ib", "--internal-border", 10, 1 },
1073 { "-ms", "--mouse-color", 10, 1 },
1074 { "-cr", "--cursor-color", 10, 1 },
1075 { "-fn", "--font", 10, 1 },
1076 { "-font", 0, 10, 1 },
1077 { "-g", "--geometry", 10, 1 },
1078 { "-geometry", 0, 10, 1 },
1079 { "-T", "--title", 10, 1 },
1080 { "-title", 0, 10, 1 },
1081 { "-name", "--name", 10, 1 },
1082 { "-xrm", "--xrm", 10, 1 },
1083 { "-r", "--reverse-video", 5, 0 },
1085 { "-reverse", 0, 5, 0 },
1086 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1087 { "-vb", "--vertical-scroll-bars", 5, 0 },
1088 /* These have the same priority as ordinary file name args,
1089 so they are not reordered with respect to those. */
1090 { "-L", "--directory", 0, 1 },
1091 { "-directory", 0, 0, 1 },
1092 { "-l", "--load", 0, 1 },
1093 { "-load", 0, 0, 1 },
1094 { "-f", "--funcall", 0, 1 },
1095 { "-funcall", 0, 0, 1 },
1096 { "-eval", "--eval", 0, 1 },
1097 { "-insert", "--insert", 0, 1 },
1098 /* This should be processed after ordinary file name args and the like. */
1099 { "-kill", "--kill", -10, 0 },
1102 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1103 so that the highest priority ones come first.
1104 Do not change the order of elements of equal priority.
1105 If an option takes an argument, keep it and its argument together. */
1108 sort_args (argc
, argv
)
1112 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1113 /* For each element of argv,
1114 the corresponding element of options is:
1115 0 for an option that takes no arguments,
1116 1 for an option that takes one argument, etc.
1117 -1 for an ordinary non-option argument. */
1118 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1119 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1123 int end_of_options
= argc
;
1125 /* Categorize all the options,
1126 and figure out which argv elts are option arguments. */
1127 for (from
= 1; from
< argc
; from
++)
1131 if (argv
[from
][0] == '-')
1136 /* If we have found "--", don't consider
1137 any more arguments as options. */
1138 if (argv
[from
][1] == '-')
1140 /* Leave the "--", and everything following it, at the end. */
1141 for (; from
< argc
; from
++)
1143 priority
[from
] = -100;
1149 /* Look for a match with a known old-fashioned option. */
1150 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1151 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1153 options
[from
] = standard_args
[i
].nargs
;
1154 priority
[from
] = standard_args
[i
].priority
;
1155 if (from
+ standard_args
[i
].nargs
>= argc
)
1156 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1157 from
+= standard_args
[i
].nargs
;
1161 /* Look for a match with a known long option.
1162 MATCH is -1 if no match so far, -2 if two or more matches so far,
1163 >= 0 (the table index of the match) if just one match so far. */
1164 if (argv
[from
][1] == '-')
1167 thislen
= strlen (argv
[from
]);
1168 equals
= index (argv
[from
], '=');
1170 thislen
= equals
- argv
[from
];
1173 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1174 if (standard_args
[i
].longname
1175 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1184 /* If we found exactly one match, use that. */
1187 options
[from
] = standard_args
[match
].nargs
;
1188 priority
[from
] = standard_args
[match
].priority
;
1189 /* If --OPTION=VALUE syntax is used,
1190 this option uses just one argv element. */
1193 if (from
+ options
[from
] >= argc
)
1194 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1195 from
+= options
[from
];
1202 /* Copy the arguments, in order of decreasing priority, to NEW. */
1207 int best_priority
= -9999;
1209 /* Find the highest priority remaining option.
1210 If several have equal priority, take the first of them. */
1211 for (from
= 1; from
< argc
; from
++)
1213 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1215 best_priority
= priority
[from
];
1218 /* Skip option arguments--they are tied to the options. */
1219 if (options
[from
] > 0)
1220 from
+= options
[from
];
1226 /* Copy the highest priority remaining option, with its args, to NEW. */
1227 new[to
++] = argv
[best
];
1228 for (i
= 0; i
< options
[best
]; i
++)
1229 new[to
++] = argv
[best
+ i
+ 1];
1231 /* Clear out this option in ARGV. */
1233 for (i
= 0; i
< options
[best
]; i
++)
1234 argv
[best
+ i
+ 1] = 0;
1237 bcopy (new, argv
, sizeof (char *) * argc
);
1240 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1241 "Exit the Emacs job and kill it.\n\
1242 If ARG is an integer, return ARG as the exit program code.\n\
1243 If ARG is a string, stuff it as keyboard input.\n\n\
1244 The value of `kill-emacs-hook', if not void,\n\
1245 is a list of functions (of no args),\n\
1246 all of which are called before Emacs is actually killed.")
1250 Lisp_Object hook
, hook1
;
1252 struct gcpro gcpro1
;
1259 if (!NILP (Vrun_hooks
) && !noninteractive
)
1260 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1264 /* Is it really necessary to do this deassign
1265 when we are going to exit anyway? */
1270 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1272 /* If we have an auto-save list file,
1273 kill it because we are exiting Emacs deliberately (not crashing).
1274 Do it after shut_down_emacs, which does an auto-save. */
1275 if (STRINGP (Vauto_save_list_file_name
))
1276 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1278 exit (INTEGERP (arg
) ? XINT (arg
)
1289 /* Perform an orderly shutdown of Emacs. Autosave any modified
1290 buffers, kill any child processes, clean up the terminal modes (if
1291 we're in the foreground), and other stuff like that. Don't perform
1292 any redisplay; this may be called when Emacs is shutting down in
1293 the background, or after its X connection has died.
1295 If SIG is a signal number, print a message for it.
1297 This is called by fatal signal handlers, X protocol error handlers,
1301 shut_down_emacs (sig
, no_x
, stuff
)
1305 /* Prevent running of hooks from now on. */
1308 /* If we are controlling the terminal, reset terminal modes */
1309 #ifdef EMACS_HAVE_TTY_PGRP
1311 int pgrp
= EMACS_GETPGRP (0);
1314 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1319 if (sig
&& sig
!= SIGTERM
)
1320 fprintf (stderr
, "Fatal error (%d).", sig
);
1328 stuff_buffered_input (stuff
);
1330 kill_buffer_processes (Qnil
);
1331 Fdo_auto_save (Qt
, Qnil
);
1333 #ifdef CLASH_DETECTION
1334 unlock_all_files ();
1338 kill_vms_processes ();
1341 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1342 #ifdef HAVE_X_WINDOWS
1343 /* It's not safe to call intern here. Maybe we are crashing. */
1344 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1345 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1346 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1348 Fx_close_current_connection ();
1349 #endif /* HAVE_X_WINDOWS */
1353 /* There is a tendency for a SIGIO signal to arrive within exit,
1354 and cause a SIGHUP because the input descriptor is already closed. */
1356 signal (SIGIO
, SIG_IGN
);
1370 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1371 "Dump current state of Emacs into data file FILENAME.\n\
1372 This function exists on systems that use HAVE_SHM.")
1374 Lisp_Object filename
;
1376 extern char my_edata
[];
1379 CHECK_STRING (filename
, 0);
1380 filename
= Fexpand_file_name (filename
, Qnil
);
1383 Vpurify_flag
= Qnil
;
1386 /* Tell malloc where start of impure now is */
1387 /* Also arrange for warnings when nearly out of space. */
1388 #ifndef SYSTEM_MALLOC
1389 memory_warnings (my_edata
, malloc_warning
);
1391 map_out_data (XSTRING (filename
)->data
);
1398 #else /* not HAVE_SHM */
1400 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1401 "Dump current state of Emacs into executable file FILENAME.\n\
1402 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1403 This is used in the file `loadup.el' when building Emacs.\n\
1405 Bind `command-line-processed' to nil before dumping,\n\
1406 if you want the dumped Emacs to process its command line\n\
1407 and announce itself normally when it is run.")
1409 Lisp_Object filename
, symfile
;
1411 extern char my_edata
[];
1414 CHECK_STRING (filename
, 0);
1415 filename
= Fexpand_file_name (filename
, Qnil
);
1416 if (!NILP (symfile
))
1418 CHECK_STRING (symfile
, 0);
1419 if (XSTRING (symfile
)->size
)
1420 symfile
= Fexpand_file_name (symfile
, Qnil
);
1424 Vpurify_flag
= Qnil
;
1427 set_time_zone_rule (dump_tz
);
1428 #ifndef LOCALTIME_CACHE
1429 /* Force a tz reload, since set_time_zone_rule doesn't. */
1436 mapout_data (XSTRING (filename
)->data
);
1438 /* Tell malloc where start of impure now is */
1439 /* Also arrange for warnings when nearly out of space. */
1440 #ifndef SYSTEM_MALLOC
1442 /* On Windows, this was done before dumping, and that once suffices.
1443 Meanwhile, my_edata is not valid on Windows. */
1444 memory_warnings (my_edata
, malloc_warning
);
1445 #endif /* not WINDOWSNT */
1447 unexec (XSTRING (filename
)->data
,
1448 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1449 #endif /* not VMS */
1456 #endif /* not HAVE_SHM */
1458 #endif /* not CANNOT_DUMP */
1465 decode_env_path (evarname
, defalt
)
1466 char *evarname
, *defalt
;
1468 register char *path
, *p
;
1472 /* It's okay to use getenv here, because this function is only used
1473 to initialize variables when Emacs starts up, and isn't called
1476 path
= (char *) getenv (evarname
);
1484 p
= index (path
, SEPCHAR
);
1485 if (!p
) p
= path
+ strlen (path
);
1486 lpath
= Fcons (p
- path
? make_string (path
, p
- path
)
1487 : build_string ("."),
1494 return Fnreverse (lpath
);
1501 defsubr (&Sdump_emacs_data
);
1503 defsubr (&Sdump_emacs
);
1507 defsubr (&Skill_emacs
);
1509 defsubr (&Sinvocation_name
);
1510 defsubr (&Sinvocation_directory
);
1512 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1513 "Args passed by shell to Emacs, as a list of strings.");
1515 DEFVAR_LISP ("system-type", &Vsystem_type
,
1516 "Value is symbol indicating type of operating system you are using.");
1517 Vsystem_type
= intern (SYSTEM_TYPE
);
1519 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1520 "Value is string indicating configuration Emacs was built for.");
1521 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1523 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1524 "String containing the configuration options Emacs was built with.");
1525 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1527 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1528 "Non-nil means Emacs is running without interactive terminal.");
1530 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1531 "Hook to be run whenever kill-emacs is called.\n\
1532 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1533 in other similar situations), functions placed on this hook should not\n\
1534 expect to be able to interact with the user. To ask for confirmation,\n\
1535 see `kill-emacs-query-functions' instead.");
1536 Vkill_emacs_hook
= Qnil
;
1538 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1539 "Priority for Emacs to run at.\n\
1540 This value is effective only if set before Emacs is dumped,\n\
1541 and only if the Emacs executable is installed with setuid to permit\n\
1542 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1543 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1544 before you compile Emacs, to enable the code for this feature.");
1547 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1548 "The program name that was used to run Emacs.\n\
1549 Any directory names are omitted.");
1551 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1552 "The directory in which the Emacs executable was found, to run it.\n\
1553 The value is nil if that directory's name is not known.");
1555 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1556 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1557 This is non-nil when we can't find those directories in their standard\n\
1558 installed locations, but we can find them\n\
1559 near where the Emacs executable was found.");
1560 Vinstallation_directory
= Qnil
;