| blob | 6e1a5b4c799ba973fdf53f3d765422b27c69fff8 |
1 ;;; files.el --- file input and output commands for Emacs
3 ;; Copyright (C) 1985, 86, 87, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002
4 ;;; Free Software Foundation, Inc.
6 ;; Maintainer: FSF
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
25 ;;; Commentary:
27 ;; Defines most of Emacs's file- and directory-handling functions,
28 ;; including basic file visiting, backup generation, link handling,
29 ;; ITS-id version control, load- and write-hook handling, and the like.
31 ;;; Code:
34 "Backups of edited data files."
38 "Finding files."
43 "*Non-nil means delete auto-save file when a buffer is saved or killed.
45 Note that auto-save file will not be deleted if the buffer is killed
46 when it has unsaved changes."
51 nil
52 "*Alist of abbreviations for file directories.
53 A list of elements of the form (FROM . TO), each meaning to replace
54 FROM with TO when it appears in a directory name. This replacement is
55 done when setting up the default directory of a newly visited file.
56 *Every* FROM string should start with `^'.
58 Do not use `~' in the TO strings.
59 They should be ordinary absolute directory names.
61 Use this feature when you have directories which you normally refer to
62 via absolute symbolic links. Make TO the name of the link, and FROM
63 the name it is linked to."
71 ;; Turn off backup files on VMS since it has version numbers.
73 "*Non-nil means make a backup of a file the first time it is saved.
74 This can be done by renaming the file or by copying.
76 Renaming means that Emacs renames the existing file so that it is a
77 backup file, then writes the buffer into a new file. Any other names
78 that the old file had will now refer to the backup file. The new file
79 is owned by you and its group is defaulted.
81 Copying means that Emacs copies the existing file into the backup
82 file, then writes the buffer on top of the existing file. Any other
83 names that the old file had will now refer to the new (edited) file.
84 The file's owner and group are unchanged.
86 The choice of renaming or copying is controlled by the variables
87 `backup-by-copying', `backup-by-copying-when-linked',
88 `backup-by-copying-when-mismatch' and
89 `backup-by-copying-when-privileged-mismatch'. See also `backup-inhibited'."
93 ;; Do this so that local variables based on the file name
94 ;; are not overridden by the major mode.
96 "Non-nil means don't make a backup, regardless of the other parameters.
97 This variable is intended for use by making it local to a buffer.
102 "*Non-nil means always use copying to create backup files.
103 See documentation of variable `make-backup-files'."
108 "*Non-nil means use copying to create backups for files with multiple names.
109 This causes the alternate names to refer to the latest version as edited.
110 This variable is relevant only if `backup-by-copying' is nil."
115 "*Non-nil means create backups by copying if this preserves owner or group.
116 Renaming may still be used (subject to control of other variables)
117 when it would not result in changing the owner or group of the file;
118 that is, for files which are owned by you and whose group matches
119 the default for a new file created there by you.
120 This variable is relevant only if `backup-by-copying' is nil."
125 "*Non-nil means create backups by copying to preserve a privileged owner.
126 Renaming may still be used (subject to control of other variables)
127 when it would not result in changing the owner of the file or if the owner
128 has a user id greater than the value of this variable. This is useful
129 when low-numbered uid's are used for special system users (such as root)
130 that must maintain ownership of certain files.
131 This variable is relevant only if `backup-by-copying' and
132 `backup-by-copying-when-mismatch' are nil."
137 "Predicate that looks at a file name and decides whether to make backups.
141 "*Non-nil in a buffer means always offer to save buffer on exit.
142 Do so even if the buffer is not visiting a file.
143 Automatically local in all buffers."
149 "*Non-nil means find a file under alternative names, in existing buffers.
150 This means if any existing buffer is visiting the file you want
151 under another name, you get the existing buffer instead of a new buffer."
156 "*Non-nil means visit a file under its truename.
157 The truename of a file is found by chasing all links
158 both at the file level and at the levels of the containing directories."
163 nil
164 "*Specify which files should be reverted without query.
165 The value is a list of regular expressions.
166 If the file name matches one of these regular expressions,
167 then `revert-buffer' reverts the file without querying
168 if the file has changed on disk and you have not edited the buffer."
173 "The device number and file number of the file visited in the current buffer.
174 The value is a list of the form (FILENUM DEVNUM).
175 This pair of numbers uniquely identifies the file.
195 "The directory for writing temporary files."
201 "The directory for writing small temporary files.
202 If non-nil, this directory is used instead of `temporary-file-directory'
203 by programs that create small temporary files. This is for systems that
204 have fast storage with limited space, such as a RAM disk."
208 ;; The system null device. (Should reference NULL_DEVICE from C.)
225 "*Non-nil means protect against I/O errors while saving files.
226 Some modes set this non-nil in particular buffers.
228 This feature works by writing the new contents into a temporary file
229 and then renaming the temporary file to replace the original.
230 In this way, any I/O error in writing leaves the original untouched,
231 and there is never any instant where the file is nonexistent.
233 Note that this feature forces backups to be made by copying.
234 Yet, at the same time, saving a precious file
235 breaks any hard links between it and other files."
240 "*Control use of version numbers for backup files.
241 t means make numeric backup versions unconditionally.
242 nil means make them for files that have some already.
243 `never' means do not make them."
251 "*When cleaning directory, number of versions to keep."
257 "*If t, delete excess backup versions silently.
258 If nil, ask confirmation. Any other value prevents any trimming."
265 "*Number of oldest versions to keep when a new numbered backup is made."
270 "*Number of newest versions to keep when a new numbered backup is made.
271 Includes the new backup. Must be > 0"
276 "*Value of t says silently ensure a file ends in a newline when it is saved.
277 Non-nil but not t says ask user whether to add a newline when there isn't one.
278 nil means don't add newlines."
285 "*Non-nil says by default do auto-saving of every file-visiting buffer."
290 "*Non-nil says auto-save a buffer in the file it is visiting, when practical.
291 Normally auto-save files are written under other names."
297 ;; Don't put "\\2" inside expand-file-name, since it will be
298 ;; transformed to "/2" on DOS/Windows.
300 "*Transforms to apply to buffer file name before making auto-save file name.
301 Each transform is a list (REGEXP REPLACEMENT UNIQUIFY):
302 REGEXP is a regular expression to match against the file name.
303 If it matches, `replace-match' is used to replace the
304 matching part with REPLACEMENT.
305 If the optional element UNIQUIFY is non-nil, the auto-save file name is
306 constructed by taking the directory part of the replaced file-name,
307 concatenated with the buffer file name with all directory separators
308 changed to `!' to prevent clashes. This will not work
309 correctly if your filesystem truncates the resulting name.
311 All the transforms in the list are tried, in the order they are listed.
312 When one transform applies, its result is final;
313 no further transforms are tried.
315 The default value is set up to put the auto-save file into the
316 temporary directory (see the variable `temporary-file-directory') for
317 editing a remote file.
319 On MS-DOS filesystems without long names this variable is always
320 ignored."
327 "*Non-nil means save word abbrevs too when files are saved.
328 If `silently', don't ask the user before saving."
333 "*Non-nil means allow `find-file' to visit directories.
334 To visit the directory, `find-file' runs `find-directory-functions'."
339 "*List of functions to try in sequence to visit a directory.
340 Each function is called with the directory name as the sole argument
341 and should return either a buffer or nil."
345 ;;;It is not useful to make this a local variable.
346 ;;;(put 'find-file-not-found-hooks 'permanent-local t)
348 "List of functions to be called for `find-file' on nonexistent file.
349 These functions are called as soon as the error is detected.
350 Variable `buffer-file-name' is already set up.
356 ;;;It is not useful to make this a local variable.
357 ;;;(put 'find-file-hooks 'permanent-local t)
359 "List of functions to be called after a buffer is loaded from a file.
360 The buffer's local variables (if any) will have been processed before the
366 "List of functions to be called before writing out a buffer to a file.
367 If one of them returns non-nil, the file is considered already written
368 and the rest are not called.
369 These hooks are considered to pertain to the visited file.
370 So any buffer-local binding of this variable is discarded if you change
372 change the major mode.
385 "List of functions to be called before writing out a buffer to a file.
386 If one of them returns non-nil, the file is considered already written
387 and the rest are not called.
389 This variable is meant to be used for hooks that pertain to the
390 buffer's contents, not to the particular visited file; thus,
391 `set-visited-file-name' does not clear this variable; but changing the
392 major mode does clear it.
400 "*Control use of local variables in files you visit.
401 The value can be t, nil or something else.
402 A value of t means file local variables specifications are obeyed;
403 nil means they are ignored; anything else means query.
404 This variable also controls use of major modes specified in
405 a -*- line.
408 always obeys file local variable specifications and the -*- line,
409 and ignores this variable."
416 "Like `enable-local-variables' but meant for buffer-local bindings.
417 The meaningful values are nil and non-nil. The default is non-nil.
418 If a major mode sets this to nil, buffer-locally, then any local
419 variables list in the file will be ignored.
421 This variable does not affect the use of major modes
426 The value can be t, nil or something else.
427 A value of t means obey `eval' variables;
428 nil means ignore them; anything else means query.
431 and ignores this variable."
437 ;; Avoid losing in versions where CLASH_DETECTION is disabled.
446 "*Non-nil means buffers visiting files read-only, do it in view mode."
452 "Provides support for ange-ftp host name completion.
453 Runs the usual ange-ftp hook, but only for completion operations."
454 ;; Having this here avoids the need to load ange-ftp when it's not
455 ;; really in use.
461 inhibit-file-name-handlers)))
466 "Convert a standard file's name to something suitable for the current OS.
467 This function's standard definition is trivial; it just returns the argument.
468 However, on some systems, the function is redefined with a definition
469 that really does change some file names to canonicalize certain
470 patterns and to guarantee valid names."
471 filename)
474 "Read directory name, prompting with PROMPT and completing in directory DIR.
475 Value is not expanded---you must call `expand-file-name' yourself.
476 Default name to DEFAULT-DIRNAME if user enters a null string.
477 (If DEFAULT-DIRNAME is omitted, the current buffer's directory is used,
478 except that if INITIAL is specified, that combined with DIR is used.)
479 Fourth arg MUSTMATCH non-nil means require existing directory's name.
480 Non-nil and non-t means also require confirmation after completion.
481 Fifth arg INITIAL specifies text to start with.
482 DIR defaults to current buffer's directory default."
491 \f
493 "Show the current default directory."
498 "Value of the CDPATH environment variable, as a list.
502 "Explode a colon-separated search path into a list of directory names.
503 \(For values of `colon' equal to `path-separator'.)"
504 ;; We could use split-string here.
512 nil
517 cd-list)))
520 "Change current directory to given absolute file name DIR."
521 ;; Put the name into directory syntax now,
522 ;; because otherwise expand-file-name may give some bad results.
535 "Make DIR become the current buffer's default directory.
536 If your environment includes a `CDPATH' variable, try each one of that
537 colon-separated list of directories when resolving a relative directory name."
540 default-directory default-directory
556 cd-path)
557 nil))
561 "Load the Lisp file named FILE."
562 ;; This is a case where .elc makes a lot of sense.
569 "Search for FILENAME through PATH.
570 If SUFFIXES is non-nil, it should be a list of suffixes to append to
572 If non-nil, PREDICATE is used instead of `file-readable-p'.
573 PREDICATE can also be an integer to pass to the `access' system call,
574 in which case file-name handlers are ignored. This usage is deprecated.
576 For compatibility, PREDICATE can also be one of the symbols
577 `executable', `readable', `writable', or `exists', or a list of
578 one or more of those symbols."
589 "Do completion for file names passed to `locate-file'.
590 PATH-AND-SUFFIXES is a pair of lists (DIRECTORIES . SUFFIXES)."
611 "Load the library named LIBRARY.
612 This is an interface to the function `load'."
615 'locate-file-completion
620 "Test whether FILE specifies a location on a remote system."
626 "Copy the file FILE into a temporary file on this machine.
627 Returns the name of the local copy, or nil, if FILE is directly
628 accessible."
629 ;; This formerly had an optional BUFFER argument that wasn't used by
630 ;; anything.
634 nil)))
637 "Return the truename of FILENAME, which should be absolute.
638 The truename of a file name is found by chasing symbolic links
639 both at the level of the file and at the level of the directories
640 containing it, until no links are left at any level.
642 The arguments COUNTER and PREV-DIRS are used only in recursive calls.
643 Do not specify them in other calls."
644 ;; COUNTER can be a cons cell whose car is the count of how many more links
645 ;; to chase before getting an error.
646 ;; PREV-DIRS can be a cons cell whose car is an alist
647 ;; of truenames we've just recently computed.
649 ;; The last test looks dubious, maybe `+' is meant here? --simon.
659 ;; For speed, remove the ange-ftp completion handler from the list.
660 ;; We know it's not needed here.
661 ;; For even more speed, do this only on the outermost call.
668 ;; andrewi@harlequin.co.uk - none of the following code (except for
669 ;; invoking the file-name handler) currently applies on Windows
670 ;; (ie. there are no native symlinks), but there is an issue with
671 ;; case differences being ignored by the OS, and short "8.3 DOS"
672 ;; name aliases existing for all files. (The short names are not
673 ;; reported by directory-files, but can be used to refer to files.)
674 ;; It seems appropriate for file-truename to resolve these issues in
675 ;; the most natural way, which on Windows is to call the function
676 ;; `w32-long-file-name' - this returns the exact name of a file as
677 ;; it is stored on disk (expanding short name aliases with the full
678 ;; name in the process).
681 ;; For file name that has a special handler, call handler.
682 ;; This is so that ange-ftp can save time by doing a no-op.
685 ;; If filename contains a wildcard, newname will be the old name.
687 ;; If filename exists, use the long name
691 ;; If this file directly leads to a link, process that iteratively
692 ;; so that we don't use lots of stack.
698 ;; For file name that has a special handler, call handler.
699 ;; This is so that ange-ftp can save time by doing a no-op.
702 done t)
704 target dirfile)
705 ;; Get the truename of the directory.
707 ;; If these are equal, we have the (or a) root directory.
709 ;; If this is the same dir we last got the truename for,
710 ;; save time--don't recalculate.
720 done t)
723 done t)
724 ;; Put it back on the file name.
726 ;; Is the file name the name of a link?
729 ;; Yes => chase that link, then start all over
730 ;; since the link may point to a directory name that uses links.
731 ;; We can't safely use expand-file-name here
732 ;; since target might look like foo/../bar where foo
733 ;; is itself a link. Instead, we handle . and .. above.
736 target
738 done nil)
739 ;; No, we are done!
741 filename))
744 "Chase links in FILENAME until a name that is not a link.
745 Unlike `file-truename', this does not check whether a parent
746 directory name is a symbolic link.
747 If the optional argument LIMIT is a number,
748 it means chase no more than that many links and then stop."
756 ;; In the context of a link, `//' doesn't mean what Emacs thinks.
759 ;; Handle `..' by hand, since it needs to work in the
760 ;; target of any directory symlink.
761 ;; This code is not quite complete; it does not handle
762 ;; embedded .. in some cases such as ./../foo and foo/bar/../../../lose.
766 ;; Chase links in the default dir of the symlink.
770 ;; Now find the parent of that dir.
774 newname))
777 "Change the encoding of FILE's name from CODING to NEW-CODING.
778 The value is a new name of FILE.
779 Signals a `file-already-exists' error if a file of the new name
780 already exists unless optional third argument OK-IF-ALREADY-EXISTS
781 is non-nil. A number as third arg means request confirmation if
782 the new name already exists. This is what happens in interactive
783 use with M-x."
786 default-file-name-coding-system))
788 from-coding to-coding)
790 ;; We provide the default coding only when it seems that
791 ;; the filename is correctly decoded by the default
792 ;; coding.
798 filename default-coding)
799 default-coding))
803 ;; We provide the default coding only when a user is going to
804 ;; change the encoding not from the default coding.
808 filename from-coding)))
811 filename from-coding default-coding)
812 default-coding)))
816 default-file-name-coding-system))
817 ;; FILE should have been decoded by DEFAULT-CODING.
821 ;; Suppress further encoding.
826 newname))
827 \f
829 "Select buffer BUFFER in another window.
830 Optional second arg NORECORD non-nil means
831 do not put this buffer at the front of the list of recently selected ones.
833 This uses the function `display-buffer' as a subroutine; see its
834 documentation for additional customization information."
840 "Switch to buffer BUFFER in another frame.
841 Optional second arg NORECORD non-nil means
842 do not put this buffer at the front of the list of recently selected ones.
844 This uses the function `display-buffer' as a subroutine; see its
845 documentation for additional customization information."
861 ;; Clear out this hook so it does not interfere
862 ;; with any recursive minibuffer usage.
865 minibuffer-setup-hook))
868 t))
871 "Edit file FILENAME.
872 Switch to a buffer visiting file FILENAME,
873 creating one if none already exists.
874 Interactively, the default if you just type RET is the current directory,
875 but the visited file name is available through the minibuffer history:
876 type M-n to pull it into the minibuffer.
878 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
879 expand wildcards (if any) and visit multiple files. Wildcard expansion
880 can be suppressed by setting `find-file-wildcards'."
889 "Edit file FILENAME, in another window.
890 May create a new window, or reuse an existing one.
891 See the function `display-buffer'.
893 Interactively, the default if you just type RET is the current directory,
894 but the visited file name is available through the minibuffer history:
895 type M-n to pull it into the minibuffer.
897 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
898 expand wildcards (if any) and visit multiple files."
909 "Edit file FILENAME, in another frame.
910 May create a new frame, or reuse an existing one.
911 See the function `display-buffer'.
913 Interactively, the default if you just type RET is the current directory,
914 but the visited file name is available through the minibuffer history:
915 type M-n to pull it into the minibuffer.
917 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
918 expand wildcards (if any) and visit multiple files."
929 "Edit file FILENAME but don't allow changes.
939 "Edit file FILENAME in another window but don't allow changes.
949 "Edit file FILENAME in another frame but don't allow changes.
959 "Find file FILENAME as a replacement for the file in the next window.
960 This command does not select that window."
979 "Find file FILENAME, select its buffer, kill previous buffer.
980 If the current buffer now contains an empty file that you just visited
981 \(presumably by mistake), use this command to visit the file you really want."
1011 ;; This prevents us from finding the same buffer
1012 ;; if we specified the same file again.
1016 ;; Likewise for dired buffers.
1020 ;; This executes if find-file gets an error
1021 ;; and does not really find anything.
1022 ;; We put things back as they were.
1023 ;; If find-file actually finds something, we kill obuf below.
1032 ;; We already asked; don't ask again.
1035 \f
1037 "Create a suitably named buffer for visiting FILENAME, and return it.
1038 FILENAME (sans directory) is used unchanged if that name is free;
1039 otherwise a string <2> or <3> or ... is appended to get an unused name."
1046 "Create and return a buffer with a name based on NAME.
1047 Choose the buffer's name using `generate-new-buffer-name'."
1051 "Regexp to match the automounter prefix in a directory name."
1059 "Return a version of FILENAME shortened using `directory-abbrev-alist'.
1061 removes automounter prefixes (see the variable `automount-dir-prefix')."
1062 ;; Get rid of the prefixes added by the automounter.
1069 ;; If any elt of directory-abbrev-alist matches this name,
1070 ;; abbreviate accordingly.
1076 ;; Compute and save the abbreviated homedir name.
1077 ;; We defer computing this until the first time it's needed, to
1078 ;; give time for directory-abbrev-alist to be set properly.
1079 ;; We include a slash at the end, to avoid spurious matches
1080 ;; such as `/usr/foobar' when the home dir is `/usr/foo'.
1087 ;; If FILENAME starts with the abbreviated homedir,
1088 ;; make it start with `~' instead.
1090 ;; If the home dir is just /, don't change it.
1093 ;; MS-DOS root directories can come with a drive letter;
1094 ;; Novell Netware allows drive letters beyond `Z:'.
1104 filename))
1107 "*List of logical names for which visiting shouldn't save the true dirname.
1108 On VMS, when you visit a file using a logical name that searches a path,
1109 you may or may not want the visited file name to record the specific
1110 directory where the file was found. If you *do not* want that, add the logical
1111 name to this list as a string."
1116 "Return the buffer visiting file FILENAME (a string).
1117 This is like `get-file-buffer', except that it checks for any buffer
1118 visiting the same file, possibly under a different name.
1119 If PREDICATE is non-nil, only a buffer satisfying it can be returned.
1120 If there is no such live buffer, return nil."
1134 found)
1139 number
1144 ;; Verify this buffer's file number
1145 ;; still belongs to its file.
1148 attributes)
1152 found))))
1153 \f
1155 "*Non-nil means file-visiting commands should handle wildcards.
1156 For example, if you specify `*.c', that would visit all the files
1157 whose names match the pattern."
1163 "*Non-nil means suppress warning messages for symlinked files.
1164 When nil, Emacs prints a warning when visiting a file that is already
1165 visited, but with a different name. Setting this option to t
1166 suppresses this warning."
1172 "Maximum size of file above which a confirmation is requested."
1176 "Read file FILENAME into a buffer and return the buffer.
1177 If a buffer exists visiting FILENAME, return that one, but
1178 verify that the file has not changed since visited or saved.
1179 The buffer is not selected, just returned to the caller.
1180 Optional first arg NOWARN non-nil means suppress any warning messages.
1181 Optional second arg RAWFILE non-nil means the file is read literally.
1182 Optional third arg WILDCARDS non-nil means do wildcard processing
1183 and visit all the matching files. When wildcards are actually
1184 used and expanded, the value is a list of buffers
1185 that are visiting the various files."
1192 'find-directory-functions
1195 filename)))
1198 find-file-wildcards
1212 ;; Find any buffer for a file which has same truename.
1214 ;; Let user know if there is a buffer with the same truename.
1218 find-file-suppress-same-file-warnings
1222 ;; Optionally also find that buffer.
1225 ;; Check to see if the file looks uncommonly large.
1227 ;; Don't ask again if we already have the file or
1228 ;; if we're asked to be quiet.
1237 ;; We are using an existing buffer.
1243 ;; Certain files should be reverted automatically
1244 ;; if they have changed on disk and not in the buffer.
1252 found))
1262 "File %s changed on disk. Discard your edits? "
1267 "File %s changed on disk. Discard your edits in %s? "
1275 ;; Check if a formerly read-only file has become
1276 ;; writable and vice versa, but if the buffer agrees
1277 ;; with the new state of the file, that is ok too.
1284 buffer-file-name
1292 ;; It is confusing to ask whether to visit
1293 ;; non-literally if they have the file in
1294 ;; hexl-mode.
1298 "Save file and revisit literally? "
1303 rawfile truename number))
1305 "Discard your edits and revisit file literally? "
1308 rawfile truename number)
1312 "Revisit file literally? "
1315 rawfile truename number)
1318 ;; Return the buffer we are using.
1319 buf)
1320 ;; Create a new buffer.
1323 ;; find-file-noselect-1 may use a different buffer.
1325 rawfile truename number))))))
1329 error)
1332 ;; Needed in case we are re-visiting the file with a different
1333 ;; text representation.
1348 filename)))
1349 ;; Unconditionally set error
1358 filename)))
1359 ;; Run find-file-not-found-hooks until one returns non-nil.
1361 ;; If they fail too, set error.
1363 ;; Record the file's truename, and maybe use that as visited name.
1369 ;; On VMS, we may want to remember which directory in a search list
1370 ;; the file was found in.
1382 ;; Set buffer's default directory to that of the file.
1384 ;; Turn off backup files for certain file names. Since
1385 ;; this is a permanent local, the major mode won't eliminate it.
1398 \f
1400 "Like `insert-file-contents', but only reads in the file literally.
1401 A buffer may be modified in several ways after reading into the buffer,
1402 to Emacs features such as format decoding, character code
1403 conversion, `find-file-hook', automatic uncompression, etc.
1405 This function ensures that none of these modifications will take place."
1413 nil))
1427 filename)))
1437 "Insert contents of file FILENAME into buffer after point with no conversion.
1439 This function is meant for the user to run interactively.
1440 Don't call it from programs! Use `insert-file-contents-literally' instead.
1441 \(Its calling sequence is different; see its documentation)."
1446 "Non-nil if this buffer was made by `find-file-literally' or equivalent.
1451 "Visit file FILENAME with no conversion of any kind.
1452 Format conversion and character code conversion are both disabled,
1453 and multibyte characters are disabled in the resulting buffer.
1454 The major mode used is Fundamental mode regardless of the file name,
1455 and local variable specifications in the file are ignored.
1456 Automatic uncompression and adding a newline at the end of the
1457 file due to `require-final-newline' is also disabled.
1459 You cannot absolutely rely on this function to result in
1460 visiting the file literally. If Emacs already has a buffer
1461 which is visiting the file, you get the existing buffer,
1462 regardless of whether it was created literally or not.
1464 In a Lisp program, if you want to be sure of accessing a file's
1465 contents literally, you should create a temporary buffer and then read
1466 the file contents into it using `insert-file-contents-literally'."
1469 \f
1473 after-find-file-from-revert-buffer
1474 nomodes)
1475 "Called after finding a file and by the default revert function.
1476 Sets buffer mode, parses local variables.
1477 Optional args ERROR, WARN, and NOAUTO: ERROR non-nil means there was an
1478 error in reading the file. WARN non-nil means warn if there
1479 exists an auto-save file more recent than the visited file.
1480 NOAUTO means don't mess with auto-save mode.
1481 Fourth arg AFTER-FIND-FILE-FROM-REVERT-BUFFER non-nil
1482 means this call was from `revert-buffer'.
1483 Fifth arg NOMODES non-nil means don't alter the file's modes.
1484 Finishes by calling the functions in `find-file-hook'
1485 unless NOMODES is non-nil."
1488 nil
1498 ;; No need to warn if buffer is auto-saved
1499 ;; under the name of the visited file.
1501 auto-save-visited-file-name))
1504 buffer-file-name))
1518 (if (file-exists-p (file-name-directory (directory-file-name (file-name-directory buffer-file-name))))
1519 "Use M-x make-directory RET RET to create the directory"
1526 ;; Make people do a little extra work (C-x C-q)
1527 ;; before altering a backup file.
1530 ;; When a file is marked read-only,
1531 ;; make the buffer read-only even if root is looking at it.
1540 view-read-only
1546 "Eval BODY and turn any error into a FORMAT message.
1547 FORMAT can have a %s escape which will be replaced with the actual error.
1548 If `debug-on-error' is set, errors are not caught, so that you can
1549 debug them.
1550 Avoid using a large BODY since it is duplicated."
1559 "Choose the major mode for this buffer automatically.
1560 Also sets up any specified local variables of the file.
1561 Uses the visited file name, the -*- line, and the local variables spec.
1563 This function is called automatically from `find-file'. In that case,
1564 we may set up the file-specified mode and local variables,
1565 depending on the value of `enable-local-variables': if it is t, we do;
1566 if it is nil, we don't; otherwise, we query.
1567 In addition, if `local-enable-local-variables' is nil, we do
1568 not set local variables (though we do notice a mode specified with -*-.)
1570 `enable-local-variables' is ignored if you run `normal-mode' interactively,
1571 or from Lisp without specifying the optional argument FIND-FILE;
1572 in that case, this function acts as if `enable-local-variables' were t."
1622 ;; Less common extensions come here
1623 ;; so more common ones above are found faster.
1633 ;; for MSDOS and MS-Windows (which are case-insensitive)
1681 ;; Mailer puts message to be edited in
1682 ;; /tmp/Re.... or Message
1687 ;; some news reader is reported to use this
1698 ;; .emacs or .gnus or .viper following a directory delimiter in
1699 ;; Unix, MSDOG or VMS syntax.
1702 ;; _emacs following a directory delimiter
1703 ;; in MsDos syntax
1716 ;; Get rid of any trailing .n.m and try again.
1717 ;; This is for files saved by cvs-merge that look like .#<file>.<rev>
1718 ;; or .#<file>.<rev>-<rev> or VC's <file>.~<rev>~.
1719 ;; Using mode nil rather than `ignore' would let the search continue
1720 ;; through this list (with the shortened name) rather than start over.
1722 ;; The following should come after the ChangeLog pattern
1723 ;; for the sake of ChangeLog.1, etc.
1724 ;; and after the .scm.[0-9] and CVS' <file>.<rev> patterns too.
1729 "Alist of filename patterns vs corresponding major mode functions.
1730 Each element looks like (REGEXP . FUNCTION) or (REGEXP FUNCTION NON-NIL).
1731 \(NON-NIL stands for anything that is not nil; the value does not matter.)
1732 Visiting a file whose name matches REGEXP specifies FUNCTION as the
1733 mode function to use. FUNCTION will be called, unless it is nil.
1735 If the element has the form (REGEXP FUNCTION NON-NIL), then after
1736 calling FUNCTION (if it's not nil), we delete the suffix that matched
1782 "Alist mapping interpreter names to major modes.
1783 This alist applies to files whose first line starts with `#!'.
1784 Each element looks like (INTERPRETER . MODE).
1785 The car of each element is compared with
1786 the name of the interpreter specified in the first line.
1793 "List of regexps for what to ignore, for `inhibit-first-line-modes-regexps'.
1794 When checking `inhibit-first-line-modes-regexps', we first discard
1800 "Regular expression matching interpreters, for file mode determination.
1801 This regular expression is matched against the first line of a file
1802 to determine the file's mode in `set-auto-mode' when Emacs can't deduce
1803 a mode from the file's name. If it matches, the file is assumed to
1804 be interpreted by the interpreter matched by the second group of the
1805 regular expression. The mode is then determined as the mode associated
1809 "Select major mode appropriate for current buffer.
1810 This checks for a -*- mode tag in the buffer's text,
1811 compares the filename against the entries in `auto-mode-alist',
1812 or checks the interpreter that runs this file against
1813 `interpreter-mode-alist'.
1815 It does not check for the `mode:' local variable in the
1816 Local Variables section of the file; for that, use `hack-local-variables'.
1818 If `enable-local-variables' is nil, this function does not check for a
1819 -*- mode tag.
1821 If the optional argument JUST-FROM-FILE-NAME is non-nil,
1822 then we do not set anything but the major mode,
1823 and we don't even do that unless it would come from the file name."
1824 ;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*-
1832 ;; Find all specifications for the `mode:' variable
1833 ;; and execute them left to right.
1845 modes)))
1846 ;; Simple -*-MODE-*- case.
1849 modes))))
1850 ;; If we found modes to use, invoke them now,
1851 ;; outside the save-excursion.
1858 ;; If we didn't find a mode from a -*- line, try using the file name.
1862 ;; Remove backup-suffixes from file name.
1868 ;; Find first matching alist entry.
1877 keep-going t)
1879 keep-going nil)))
1882 ;; When JUST-FROM-FILE-NAME is set,
1883 ;; we are working on behalf of set-visited-file-name.
1884 ;; In that case, if the major mode specified is the
1885 ;; same one we already have, don't actually reset it.
1886 ;; We don't want to lose minor modes such as Font Lock.
1889 ;; If we can't deduce a mode from the file name,
1890 ;; look for an interpreter specified in the first line.
1891 ;; As a special case, allow for things like "#!/bin/env perl",
1892 ;; which finds the interpreter anywhere in $PATH.
1899 elt)
1900 ;; Map interpreter name to a mode.
1902 interpreter-mode-alist))
1909 "Find the -*- spec in the buffer.
1910 Call with point at the place to start searching from.
1911 If one is found, set point to the beginning
1912 and return the position of the end.
1913 Otherwise, return nil; point may be changed."
1916 ;; Don't look for -*- if this file name matches any
1917 ;; of the regexps in inhibit-first-line-modes-regexps.
1925 sufs)
1933 ;; If the file begins with "#!"
1934 ;; (exec interpreter magic), look
1935 ;; for mode frobs in the first two
1936 ;; lines. You cannot necessarily
1937 ;; put them in the first line of
1938 ;; such a file without screwing up
1939 ;; the interpreter invocation.
1947 t))
1953 end))))
1956 "Set local variables specified in the -*- line.
1957 Ignore any specification for `mode:' and `coding:';
1958 `set-auto-mode' should already have handled `mode:',
1959 `set-auto-coding' should already have handled `coding:'.
1960 If MODE-ONLY is non-nil, all we do is check whether the major mode
1961 is specified, returning t if it is specified."
1966 mode-specified
1969 ;; Parse the -*- line into the RESULT alist.
1970 ;; Also set MODE-SPECIFIED if we see a spec or `mode'.
1972 nil)
1974 ;; Simple form: "-*- MODENAME -*-". Already handled.
1976 nil)
1978 ;; Hairy form: '-*-' [ <variable> ':' <value> ';' ]* '-*-'
1979 ;; (last ";" is optional).
1984 ;; There used to be a downcase here,
1985 ;; but the manual didn't say so,
1986 ;; and people want to set var names that aren't all lc.
1993 ;; It is traditional to ignore
1994 ;; case when checking for `mode' in set-auto-mode,
1995 ;; so we must do that here as well.
1996 ;; That is inconsistent, but we're stuck with it.
1997 ;; The same can be said for `coding' in set-auto-coding.
2015 ;; If we fail to switch in the selected window,
2016 ;; it is probably a minibuffer.
2017 ;; So try another window.
2028 nil))))
2031 "Normal hook run after processing a file's local variables specs.
2032 Major modes can use this to examine user-specified local variables
2036 "Parse and put into effect this buffer's local variables spec.
2037 If MODE-ONLY is non-nil, all we do is check whether the major mode
2038 is specified, returning t if it is specified."
2040 ;; If MODE-ONLY is t, we check here for specifying the mode
2041 ;; in the -*- line. If MODE-ONLY is nil, we process
2042 ;; the -*- line here.
2046 ;; Look for "Local variables:" line in last page.
2053 mode-only
2063 buffer-file-name)
2067 prefix prefixlen suffix beg
2068 mode-specified
2070 ;; The prefix is what comes before "local variables:" in its line.
2071 ;; The suffix is what comes after "local variables:" in its line.
2086 ;; Look at next local variable spec.
2089 ;; Skip the prefix, if any.
2094 ;; Find the variable name; strip whitespace.
2102 val)
2103 ;; Setting variable named "end" means end of list.
2106 ;; Otherwise read the variable value.
2117 ;; Set the variable. "Variables" mode and eval are funny.
2121 mode-specified))
2127 ;; Get confirmation before setting these variables as locals in a file.
2152 ;; Don't wait for outline.el to be loaded, for the sake of outline-minor-mode.
2182 ;; This case is safe because the user gets to check it before it is used.
2186 "Non-nil if SYM could be dangerous as a file-local variable with value VAL.
2187 If VAL is nil, the question is whether any value might be dangerous."
2191 (and (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$\\|font-lock-keywords$\\|font-lock-keywords-[0-9]+$\\|font-lock-syntactic-keywords$\\|-frame-alist$\\|-mode-alist$\\|-map$\\|-map-alist$"
2194 ;; If the safe-local-variable property isn't t or nil,
2195 ;; then it must return non-nil on the proposed value to be safe.
2202 Add expressions to this list if you want Emacs to evaluate them, when
2203 they appear in an `eval' local variable specification, without first
2204 asking you for confirmation."
2221 "Return t if it is safe to eval EXP when it is found in a file."
2223 ;; Detect certain `put' expressions.
2229 ;; Only allow safe values of lisp-indent-hook;
2230 ;; not functions.
2233 ;; Allow expressions that the user requested.
2235 ;; Certain functions can be allowed with safe arguments
2236 ;; or can specify verification functions to try.
2244 ok))
2252 ok)))))))
2256 A few patterns are specified so that any name which matches one
2257 is considered risky."
2262 ;; We have already handled coding: tag in set-auto-coding.
2263 nil)
2264 ;; "Setting" eval means either eval it or do nothing.
2265 ;; Likewise for setting hook variables.
2267 ;; Permit evalling a put of a harmless property.
2268 ;; if the args do nothing tricky.
2271 ;; Permit eval if not root and user says ok.
2290 ;; Ordinary variable, really set it.
2292 ;; Make sure the string has no text properties.
2293 ;; Some text properties can get evaluated in various ways,
2294 ;; so it is risky to put them on with a local variable list.
2299 \f
2302 However, the mode will not be changed if
2303 \(1) a local variables list or the `-*-' line specifies a major mode, or
2305 \ not suitable for ordinary files, or
2306 \(3) the new file name does not particularly specify any mode."
2311 "Change name of file visited in current buffer to FILENAME.
2312 The next time the buffer is saved it will go in the newly specified file.
2313 nil or empty string as argument means make buffer not be visiting any file.
2314 Remember to delete the initial contents of the minibuffer
2315 if you wish to pass an empty string as the argument.
2317 The optional second argument NO-QUERY, if non-nil, inhibits asking for
2318 confirmation in the case where another buffer is already visiting FILENAME.
2320 The optional third argument ALONG-WITH-FILE, if non-nil, means that
2321 the old visited file has been renamed to the new name FILENAME."
2329 nil
2340 filename)))
2359 ;; Abbreviate the file names of the buffer.
2368 nil)))
2369 ;; write-file-functions is normally used for things like ftp-find-file
2370 ;; that visit things that are not local files as if they were files.
2371 ;; Changing to visit an ordinary local file instead should flush the hook.
2376 ;; If buffer was read-only because of version control,
2377 ;; that reason is gone now, so make it writable.
2381 ;; Turn off backup files for certain file names.
2382 ;; Since this is a permanent local, the major mode won't eliminate it.
2389 ;; If auto-save was not already on, turn it on if appropriate.
2393 ;; If auto save is on, start using a new name.
2394 ;; We deliberately don't rename or delete the old auto save
2395 ;; for the old visited file name. This is because perhaps
2396 ;; the user wants to save the new state and then compare with the
2397 ;; previous state from the auto save file.
2400 ;; Rename the old auto save file if any.
2407 ;; Update the major mode, if the file name determines it.
2409 ;; Don't change the mode if it is special.
2412 ;; Don't change the mode if the local variable list specifies it.
2418 "Write current buffer into file FILENAME.
2419 This makes the buffer visit that file, and marks it as not modified.
2421 If you specify just a directory name as FILENAME, that means to use
2422 the default file name but in that directory. You can also yank
2423 the default file name into the minibuffer to edit it, using M-n.
2425 If the buffer is not already visiting a file, the default file name
2426 for the output file is the buffer name.
2428 If optional second arg CONFIRM is non-nil, this function
2429 asks for confirmation before overwriting an existing file.
2430 Interactively, confirmation is required unless you supply a prefix argument."
2431 ;; (interactive "FWrite file: ")
2435 nil nil nil nil)
2439 default-directory)
2440 nil nil))
2444 ;; If arg is just a directory,
2445 ;; use the default file name, but in that directory.
2456 ;; Make buffer writable if file is writable.
2461 \f
2463 "Make a backup of the disk file visited by the current buffer, if appropriate.
2464 This is normally done before saving the buffer the first time.
2466 A backup may be done by renaming or by copying; see documentation of
2467 variable `make-backup-files'. If it's done by renaming, then the file is
2468 no longer accessible under its old name.
2470 The value is non-nil after a backup was made by renaming.
2471 It has the form (MODES . BACKUPNAME).
2472 MODES is the result of `file-modes' on the original
2473 file; this means that the caller, after saving the buffer, should change
2474 the modes of the new file to agree with the old modes.
2475 BACKUPNAME is the backup file name, which is the old file renamed."
2482 backup-info backupname targets setmodes)
2483 ;; If specified name is a symbolic link, chase it to the target.
2484 ;; Thus we make the backups in the directory where the real file is.
2489 ;; (if (file-directory-p buffer-file-name)
2490 ;; (error "Cannot save buffer in directory %s" buffer-file-name))
2494 ;; If have old versions to maybe delete,
2495 ;; ask the user to confirm now, before doing anything.
2496 ;; But don't actually delete til later.
2501 real-file-name)))))
2503 ;; Actually write the back up file.
2506 ; (file-symlink-p buffer-file-name)
2507 backup-by-copying
2508 ;; Don't rename a suid or sgid file.
2522 ;; rename-file should delete old backup.
2526 ;; If trouble writing the backup, write it in ~.
2535 ;; Now delete the old versions, if desired.
2542 setmodes)
2549 ;; If copying fails because file TO-NAME
2550 ;; is not writable, delete that file and try again.
2558 "Return file NAME sans backup versions or strings.
2559 This is a separate procedure so your site-init or startup file can
2560 redefine it.
2561 If the optional argument KEEP-BACKUP-VERSION is non-nil,
2562 we do not remove backup version numbers, only true file version numbers."
2568 ;; VMS version number is (a) semicolon, optional
2569 ;; sign, zero or more digits or (b) period, option
2570 ;; sign, zero or more digits, provided this is the
2571 ;; second period encountered outside of the
2572 ;; device/directory part of the file name.
2575 name)
2585 "Return t if deleting FILE and rewriting it would preserve the owner."
2590 ;; Return t if the file doesn't exist, since it's true that no
2591 ;; information would be lost by an (attempted) delete and create.
2597 The extension, in a file name, is the part that follows the last `.',
2598 except that a leading `.', if any, doesn't count."
2601 directory)
2605 ;; Don't use expand-file-name here; if DIRECTORY is relative,
2606 ;; we don't want to expand it.
2609 filename))))
2613 The extension, in a file name, is the part that follows the last `.',
2614 except that a leading `.', if any, doesn't count.
2615 Return nil for extensionless file names such as `foo'.
2616 Return the empty string for file names such as `foo.'.
2618 If PERIOD is non-nil, then the returned value includes the period
2619 that delimits the extension, and if FILENAME has no extension,
2630 "A function to use instead of the default `make-backup-file-name'.
2631 A value of nil gives the default `make-backup-file-name' behaviour.
2633 This could be buffer-local to do something special for specific
2634 files. If you define it, you may need to change `backup-file-name-p'
2635 and `file-name-sans-versions' too.
2637 See also `backup-directory-alist'."
2643 "Alist of filename patterns and backup directory names.
2644 Each element looks like (REGEXP . DIRECTORY). Backups of files with
2645 names matching REGEXP will be made in DIRECTORY. DIRECTORY may be
2646 relative or absolute. If it is absolute, so that all matching files
2647 are backed up into the same directory, the file names in this
2648 directory will be the full name of the file backed up with all
2649 directory separators changed to `!' to prevent clashes. This will not
2650 work correctly if your filesystem truncates the resulting name.
2652 For the common case of all backups going into one directory, the alist
2654 directory name.
2656 If this variable is nil, or it fails to match a filename, the backup
2657 is made in the original file's directory.
2659 On MS-DOS filesystems without long names this variable is always
2660 ignored."
2666 "Default `backup-enable-predicate' function.
2667 Checks for files in `temporary-file-directory' or
2668 `small-temporary-file-directory'."
2671 ;; Directory is under temporary-file-directory.
2676 0 nil
2678 ;; Directory is under small-temporary-file-directory.
2683 "Create the non-numeric backup file name for FILE.
2684 Normally this will just be the file's name with `~' appended.
2685 Customization hooks are provided as follows.
2687 If the variable `make-backup-file-name-function' is non-nil, its value
2688 should be a function which will be called with FILE as its argument;
2689 the resulting name is used.
2691 Otherwise a match for FILE is sought in `backup-directory-alist'; see
2692 the documentation of that variable. If the directory for the backup
2693 doesn't exist, it is created."
2707 "Subroutine of `make-backup-file-name' and `find-backup-file-name'."
2709 elt backup-directory)
2714 alist nil)))
2720 file
2724 ;; Normalize DOSish file names: downcase the drive
2725 ;; letter, if any, and replace the leading "x:" with
2726 ;; "/drive_x".
2729 ;; Replace any invalid file-name characters (for the
2730 ;; case of backing up remote files).
2734 "drive_"
2737 ""
2740 ;; Make the name unique by substituting directory
2741 ;; separators. It may not really be worth bothering about
2742 ;; doubling `!'s in the original name...
2747 backup-directory))
2754 "Return non-nil if FILE is a backup file name (numeric or not).
2755 This is a separate function so you can redefine it for customization.
2756 You may need to redefine `file-name-sans-versions' as well."
2761 ;; This is used in various files.
2762 ;; The usage of backup-extract-version-start is not very clean,
2763 ;; but I can't see a good alternative, so as of now I am leaving it alone.
2765 "Given the name of a numeric backup file, FN, return the backup number.
2766 Uses the free variable `backup-extract-version-start', whose value should be
2767 the index in the name where the version number begins."
2773 ;; I believe there is no need to alter this behavior for VMS;
2774 ;; since backup files are not made on VMS, it should not get called.
2776 "Find a file name for a backup file FN, and suggestions for deletions.
2777 Value is a list whose car is the name for the backup file
2778 and whose cdr is a list of old versions to consider deleting now.
2779 If the value is nil, don't make a backup.
2780 Uses `backup-directory-alist' in the same way as does
2781 `make-backup-file-name'."
2783 ;; Run a handler for this function so that ange-ftp can refuse to do it.
2787 ;; We don't support numbered backups on plain MS-DOS
2788 ;; when long file names are unavailable.
2798 possibilities deserve-versions-p versions)
2801 base-versions
2804 possibilities)
2805 #'<)
2810 kept-old-versions
2811 kept-new-versions
2818 ;; Delete nothing if there is overflow
2819 ;; in the number of versions to keep.
2825 v))))))))))
2828 "Return number of names file FILENAME has."
2831 ;; (defun file-relative-name (filename &optional directory)
2832 ;; "Convert FILENAME to be relative to DIRECTORY (default: `default-directory').
2833 ;; This function returns a relative file name which is equivalent to FILENAME
2834 ;; when used with that default directory as the default.
2835 ;; If this is impossible (which can happen on MSDOS and Windows
2836 ;; when the file name and directory use different drive names)
2837 ;; then it returns FILENAME."
2838 ;; (save-match-data
2839 ;; (let ((fname (expand-file-name filename)))
2840 ;; (setq directory (file-name-as-directory
2841 ;; (expand-file-name (or directory default-directory))))
2842 ;; ;; On Microsoft OSes, if FILENAME and DIRECTORY have different
2843 ;; ;; drive names, they can't be relative, so return the absolute name.
2844 ;; (if (and (or (eq system-type 'ms-dos)
2845 ;; (eq system-type 'cygwin)
2846 ;; (eq system-type 'windows-nt))
2847 ;; (not (string-equal (substring fname 0 2)
2848 ;; (substring directory 0 2))))
2849 ;; filename
2850 ;; (let ((ancestor ".")
2851 ;; (fname-dir (file-name-as-directory fname)))
2852 ;; (while (and (not (string-match (concat "^" (regexp-quote directory)) fname-dir))
2853 ;; (not (string-match (concat "^" (regexp-quote directory)) fname)))
2854 ;; (setq directory (file-name-directory (substring directory 0 -1))
2855 ;; ancestor (if (equal ancestor ".")
2856 ;; ".."
2857 ;; (concat "../" ancestor))))
2858 ;; ;; Now ancestor is empty, or .., or ../.., etc.
2859 ;; (if (string-match (concat "^" (regexp-quote directory)) fname)
2860 ;; ;; We matched within FNAME's directory part.
2861 ;; ;; Add the rest of FNAME onto ANCESTOR.
2862 ;; (let ((rest (substring fname (match-end 0))))
2863 ;; (if (and (equal ancestor ".")
2864 ;; (not (equal rest "")))
2865 ;; ;; But don't bother with ANCESTOR if it would give us `./'.
2866 ;; rest
2867 ;; (concat (file-name-as-directory ancestor) rest)))
2868 ;; ;; We matched FNAME's directory equivalent.
2869 ;; ancestor))))))
2872 "Convert FILENAME to be relative to DIRECTORY (default: `default-directory').
2873 This function returns a relative file name which is equivalent to FILENAME
2874 when used with that default directory as the default.
2875 If FILENAME and DIRECTORY lie on different machines or on different drives
2876 on a DOS/Windows machine, it returns FILENAME on expanded form."
2880 default-directory))))
2888 ;; Test for different drives on DOS/Windows
2893 ;; Test for different remote file handlers
2895 ;; Test for different remote file system identification
2897 hf
2907 filename
2917 filename-dir))
2919 filename)))
2922 ".."
2924 ;; Now ancestor is empty, or .., or ../.., etc.
2926 ;; We matched within FILENAME's directory part.
2927 ;; Add the rest of FILENAME onto ANCESTOR.
2930 ;; But don't bother with ANCESTOR if it would give us `./'.
2931 rest
2933 ;; We matched FILENAME's directory equivalent.
2934 ancestor))))))
2935 \f
2937 "Save current buffer in visited file if modified. Versions described below.
2938 By default, makes the previous version into a backup file
2939 if previously requested or if this is the first save.
2941 to become a backup when the next save is done.
2943 unconditionally makes the previous version into a backup file.
2945 to become a backup when the next save is done,
2946 and unconditionally makes the previous version into a backup file.
2948 With argument of 0, never make the previous version into a backup file.
2950 If a file's name is FOO, the names of its numbered backup versions are
2951 FOO.~i~ for various integers i. A non-numbered backup file is called FOO~.
2952 Numeric backups (rather than FOO~) will be made if value of
2953 `version-control' is not the atom `never' and either there are already
2954 numeric versions of the file being backed up, or `version-control' is
2955 non-nil.
2956 We don't want excessive versions piling up, so there are variables
2957 `kept-old-versions', which tells Emacs how many oldest versions to keep,
2958 and `kept-new-versions', which tells how many newest versions to keep.
2959 Defaults are 2 old versions and 2 new.
2960 `dired-kept-versions' controls dired's clean-directory (.) command.
2961 If `delete-old-versions' is nil, system will query user
2962 before trimming versions. Otherwise it does it silently.
2964 If `vc-make-backup-files' is nil, which is the default,
2965 no backup files are made for files managed by version control.
2966 (This is because the version control system itself records previous versions.)
2968 See the subroutine `basic-save-buffer' for more information."
2981 "Delete auto-save file for current buffer if `delete-auto-save-files' is t.
2982 Normally delete only if the file was written by this Emacs since
2983 the last real save, but optional arg FORCE non-nil means delete anyway."
2997 "Normal hook that is run after a buffer is saved to its file."
3003 "If non-nil, use this coding system for saving the buffer.
3004 More precisely, use this coding system in place of the
3005 value of `buffer-file-coding-system', when saving the buffer.
3006 Calling `write-region' for any purpose other than saving the buffer
3007 will still use `buffer-file-coding-system'; this variable has no effect
3014 "Save the current buffer in its visited file, if it has been modified.
3015 The hooks `write-contents-functions' and `write-file-functions' get a chance
3016 to do the job of saving; if they do not, then the buffer is saved in
3017 the visited file file in the usual way.
3018 After saving the buffer, this function runs `after-save-hook'."
3021 ;; In an indirect buffer, save its base buffer instead.
3026 setmodes)
3027 ;; On VMS, rename file and buffer to get rid of version number.
3032 ;; Strip VMS version number before save.
3035 ;; Construct a (unique) buffer name to correspond.
3040 ;; If buffer has no file name, ask user for one.
3047 filename))
3072 ;; Support VC version backups.
3077 ;; If a hook returned t, file is already "written".
3078 ;; Otherwise, write it the usual way now.
3080 ;; Now we have saved the current buffer. Let's make sure
3081 ;; that buffer-file-coding-system is fixed to what
3082 ;; actually used for saving by binding it locally.
3092 ;; If the auto-save file was recent before this command,
3093 ;; delete it now.
3095 ;; Support VC `implicit' locking.
3100 ;; This does the "real job" of writing a buffer into its visited file
3101 ;; and making a backup file. This is what is normally done
3102 ;; but inhibited if one of write-file-functions returns non-nil.
3103 ;; It returns a value (MODES . BACKUPNAME), like backup-buffer.
3110 ;; This returns a value (MODES . BACKUPNAME), like backup-buffer.
3124 buffer-file-name)))
3132 ;; If file is precious, write temp name, then rename it.
3133 ;; This requires write access to the containing dir,
3134 ;; which is why we don't try it if we don't have that access.
3136 tempname nogood i succeed
3140 ;; Find the temporary name to write under.
3147 "%s$tmp$%d"
3149 dir i))
3155 tempname nil realname
3156 buffer-file-truename)
3158 ;; If writing the temp file fails,
3159 ;; delete the temp file.
3166 ;; Since we have created an entirely new file
3167 ;; and renamed it, make sure it gets the
3168 ;; right permission bits set.
3170 buffer-file-name)))
3171 ;; We succeeded in writing the temp file,
3172 ;; so rename it.
3174 ;; If file not writable, see if we can make it writable
3175 ;; temporarily while we write it.
3176 ;; But no need to do so if we have just backed it up
3177 ;; (setmodes is set) because that says we're superseding.
3179 ;; Change the mode back, after writing.
3186 buffer-file-name nil t buffer-file-truename)
3188 ;; If we get an error writing the new file, and we made
3189 ;; the backup by renaming, undo the backing-up.
3192 setmodes))
3195 "View the differences between BUFFER and its associated file.
3196 This requires the external program `diff' to be in your `exec-path'."
3211 ;; Display that message for 1 second so that user can read it
3212 ;; in the minibuffer.
3214 ;; return always nil, so that save-buffers-kill-emacs will not move
3215 ;; over to the next unsaved buffer when calling `d'.
3216 nil)
3219 '((?\C-r
3225 ;; Return nil to ask about BUF again.
3226 nil)
3228 (?d diff-buffer-with-file
3234 "Save some modified file-visiting buffers. Asks user about each one.
3235 You can answer `y' to save, `n' not to save, `C-r' to look at the
3236 buffer in question with `view-buffer' before deciding or `d' to
3237 view the differences using `diff-buffer-to-file'.
3239 Optional argument (the prefix) non-nil means save all with no questions.
3240 Optional second argument PRED determines which buffers are considered:
3241 If PRED is nil, all the file-visiting buffers are considered.
3242 If PRED is t, then certain non-file buffers will also be considered.
3243 If PRED is a zero-argument function, it indicates for each buffer whether
3244 to consider it or not when called with that buffer current.
3246 See `save-some-buffers-action-alist' if you want to
3247 change the additional actions you can take on files."
3266 t
3279 save-some-buffers-action-alist))
3286 abbrev-file-name)))
3288 ;; Don't keep bothering user if he says no.
3290 t))))
3293 \f
3295 "Mark current buffer as unmodified, not needing to be saved.
3298 It is not a good idea to use this function in Lisp programs, because it
3299 prints a message in the minibuffer. Instead, use `set-buffer-modified-p'."
3306 "Change whether this buffer is visiting its file read-only.
3307 With arg, set read-only iff arg is positive.
3308 If visiting file read-only and `view-read-only' is non-nil, enter view mode."
3313 nil ; do nothing.
3314 ;; Toggle.
3321 ;; If view-mode is already active, `view-mode-enter' is a nop.
3333 "Insert contents of file FILENAME into buffer after point.
3334 Set mark after the inserted text.
3336 This function is meant for the user to run interactively.
3337 Don't call it from programs! Use `insert-file-contents' instead.
3338 \(Its calling sequence is different; see its documentation)."
3343 "Append the contents of the region to the end of file FILENAME.
3344 When called from a function, expects three arguments,
3345 START, END and FILENAME. START and END are buffer positions
3346 saying what text to write."
3351 "Return most recent backup file for FILENAME or nil if no backups exist."
3352 ;; `make-backup-file-name' will get us the right directory for
3353 ;; ordinary or numeric backups. It might create a directory for
3354 ;; backups as a side-effect, according to `backup-directory-alist'.
3361 tem)
3370 newest))
3373 "Rename current buffer to a similar name not already taken.
3374 This function is useful for creating multiple shell process buffers
3375 or multiple mail buffers, etc."
3383 ;; If the existing buffer name has a <NNN>,
3384 ;; which isn't part of the file name (if any),
3385 ;; then get rid of that.
3391 "Create the directory DIR and any nonexistent parent dirs.
3392 Interactively, the default choice of directory to create
3393 is the current default directory for file names.
3394 That is useful when you have visited a file in a nonexistent directory.
3396 Noninteractively, the second (optional) argument PARENTS says whether
3397 to create parent directories if they don't exist."
3400 nil nil)
3401 t))
3402 ;; If default-directory is a remote directory,
3403 ;; make sure we find its make-directory handler.
3411 create-list)
3418 \f
3421 "Function to use to revert this buffer, or nil to do the default.
3422 The function receives two arguments IGNORE-AUTO and NOCONFIRM,
3427 "Function to use to insert contents when reverting this buffer.
3428 Gets two args, first the nominal file name to use,
3429 and second, t if reading the auto-save file.
3434 "Normal hook for `revert-buffer' to run before reverting.
3435 If `revert-buffer-function' is used to override the normal revert
3439 "Normal hook for `revert-buffer' to run after reverting.
3440 Note that the hook value that it runs is the value that was in effect
3441 before reverting; that makes a difference if you have buffer-local
3442 hook functions.
3444 If `revert-buffer-function' is used to override the normal revert
3450 "Replace current buffer text with the text of the visited file on disk.
3451 This undoes all changes since the file was visited or saved.
3452 With a prefix argument, offer to revert from latest auto-save file, if
3453 that is more recent than the visited file.
3455 This command also works for special buffers that contain text which
3456 doesn't come from a file, but reflects some other data base instead:
3457 for example, Dired buffers and `buffer-list' buffers. In these cases,
3458 it reconstructs the buffer contents from the appropriate data base.
3460 When called from Lisp, the first argument is IGNORE-AUTO; only offer
3461 to revert from the auto-save file when this is nil. Note that the
3462 sense of this argument is the reverse of the prefix argument, for the
3463 sake of backward compatibility. IGNORE-AUTO is optional, defaulting
3464 to nil.
3466 Optional second argument NOCONFIRM means don't ask for confirmation at
3467 all. (The local variable `revert-without-query', if non-nil, prevents
3468 confirmation.)
3470 Optional third argument PRESERVE-MODES non-nil means don't alter
3471 the files modes. Normally we reinitialize them using `normal-mode'.
3473 If the value of `revert-buffer-function' is non-nil, it is called to
3474 do all the work for this command. Otherwise, the hooks
3475 `before-revert-hook' and `after-revert-hook' are run at the beginning
3476 and the end, and if `revert-buffer-insert-file-contents-function' is
3477 non-nil, it is called instead of rereading visited file contents."
3479 ;; I admit it's odd to reverse the sense of the prefix argument, but
3480 ;; there is a lot of code out there which assumes that the first
3481 ;; argument should be t to avoid consulting the auto-save file, and
3482 ;; there's no straightforward way to encourage authors to notice a
3483 ;; reversal of the argument sense. So I'm just changing the user
3484 ;; interface, but leaving the programmatic interface the same.
3490 buffer-auto-save-file-name
3495 buffer-auto-save-file-name
3496 buffer-file-name)))
3507 found))
3509 file-name)))
3511 ;; If file was backed up but has changed since,
3512 ;; we shd make another backup.
3516 ;; Get rid of all undo records for this buffer.
3519 ;; Effectively copy the after-revert-hook status,
3520 ;; since after-find-file will clobber it.
3524 after-revert-hook)))
3526 ;; Don't make undo records for the reversion.
3530 file-name auto-save-p)
3533 "File %s no longer exists!"
3535 file-name))
3536 ;; Bind buffer-file-name to nil
3537 ;; so that we don't try to lock the file.
3543 ;; Auto-saved file shoule be read without
3544 ;; any code conversion.
3547 buffer-file-coding-system))))
3548 ;; This force
3549 ;; after-insert-file-set-buffer-file-coding-system
3550 ;; (called from insert-file-contents) to set
3551 ;; buffer-file-coding-system to a proper value.
3554 ;; Note that this preserves point in an intelligent way.
3558 nil nil t))
3560 nil nil t)))))
3561 ;; Recompute the truename in case changes in symlinks
3562 ;; have changed the truename.
3566 ;; Run after-revert-hook as it was before we reverted.
3570 local-hook)
3573 t)))))
3576 "Recover the visited file--get contents from its last auto-save file."
3581 "Visit file FILE, but get contents from its last auto-save file."
3582 ;; Actually putting the file name in the minibuffer should be used
3583 ;; only rarely.
3584 ;; Not just because users often use the default.
3604 ;; Use insert-directory-safely, not insert-directory,
3605 ;; because these files might not exist. In particular,
3606 ;; FILE might not exist if the auto-save file was for
3607 ;; a buffer that didn't visit a file, such as "*mail*".
3608 ;; The code in v20.x called `ls' directly, so we need
3609 ;; to emulate what `ls' did in that case.
3615 ;; Keep the current buffer-file-coding-system.
3617 ;; Auto-saved file shoule be read without any code conversion.
3626 "Recover auto save files from a previous Emacs session.
3627 This command first displays a Dired buffer showing you the
3628 previous sessions that you could recover from.
3629 To choose one, move point to the proper line and then type C-c C-c.
3630 Then you'll be asked about a number of files to recover."
3640 auto-save-list-file-prefix)))
3641 t)
3650 ;; Each line starts with a space
3651 ;; so that Font Lock mode won't highlight the first character.
3660 "Choose one saved session to recover auto-save files from.
3661 This command is used in the special Dired buffer created by
3664 ;; Get the name of the session file to recover from.
3666 files
3672 ;; Read in the auto-save-list file.
3676 ;; Loop thru the text of that file
3677 ;; and get out the names of the files to recover.
3681 ;; This is a pair of lines for a non-file-visiting buffer.
3682 ;; Get the auto-save file name and manufacture
3683 ;; a "visited file name" from that.
3699 ;; This pair of lines is a file-visiting
3700 ;; buffer. Use the visited file name.
3710 ;; Ignore a file if its auto-save file does not exist now.
3714 ;; The file contains a pair of line for each auto-saved buffer.
3715 ;; The first line of the pair contains the visited file name
3716 ;; or is empty if the buffer was not visiting a file.
3717 ;; The second line is the auto-save file name.
3725 files
3731 "For each buffer in LIST, ask whether to kill it.
3732 LIST defaults to all existing live buffers."
3743 name
3748 \f
3750 "Toggle auto-saving of contents of current buffer.
3751 With prefix argument ARG, turn auto-saving on if positive, else off."
3756 ;; If auto-save is off because buffer has shrunk,
3757 ;; then toggling should turn it on.
3762 buffer-file-name
3764 ;; If -1 was stored here, to temporarily turn off saving,
3765 ;; turn it back on.
3771 buffer-auto-save-file-name)
3774 "Adjust current buffer's auto save file name for current conditions.
3775 Also rename any existing auto save file, if it was made in this session."
3787 "Return file name to use for auto-saves of current buffer.
3788 Does not consider `auto-save-visited-file-name' as that variable is checked
3789 before calling this function. You can redefine this for customization.
3790 See also `auto-save-file-name-p'."
3794 result uniq)
3795 ;; Apply user-specified translations
3796 ;; to the file name.
3800 filename)
3810 filename))))
3815 ;; We truncate the file name to DOS 8+3 limits
3816 ;; before doing anything else, because the regexp
3817 ;; passed to string-match below cannot handle
3818 ;; extensions longer than 3 characters, multiple
3819 ;; dots, and other atrocities.
3824 fn)
3829 "#"
3832 ;; Make sure auto-save file names don't contain characters
3833 ;; invalid for the underlying filesystem.
3835 ;; Don't modify remote (ange-ftp) filenames
3838 result))
3840 ;; Deal with buffers that don't have any associated files. (Mail
3841 ;; mode tends to create a good number of these.)
3845 file-name)
3846 ;; Eliminate all slashes and backslashes by
3847 ;; replacing them with sequences that start with %.
3848 ;; Quote % also, to keep distinct names distinct.
3857 ;; Generate the file name.
3863 ;; Try a few alternative directories, to get one we can
3864 ;; write it.
3870 ;; Don't modify remote (ange-ftp) filenames
3872 ;; The call to convert-standard-filename is in case
3873 ;; buffer-name includes characters not allowed by the
3874 ;; DOS/Windows filesystems. make-temp-file writes to the
3875 ;; file it creates, so we must fix the file name _before_
3876 ;; make-temp-file is called.
3878 fname))
3880 ;; make-temp-file creates the file,
3881 ;; but we don't want it to exist until we do an auto-save.
3885 file-name)))
3888 "Return non-nil if FILENAME can be yielded by `make-auto-save-file-name'.
3889 FILENAME should lack slashes. You can redefine this for customization."
3891 \f
3893 "Given a shell file name pattern WILDCARD, return an equivalent regexp.
3894 The generated regexp will match a filename iff the filename
3895 matches that wildcard according to shell rules. Only wildcards known
3896 by `sh' are supported."
3898 ;; Copy the initial run of non-special characters.
3901 ;; If no special characters, we're almost done.
3905 j)
3907 result
3928 ;; Found "[^". Insert a `\0' character
3929 ;; (which cannot happen in a filename)
3930 ;; into the character class, so that `^'
3931 ;; is not the first character after `[',
3932 ;; and thus non-special in a regexp.
3937 ;; I don't think `]' can appear in a
3938 ;; character class in a wildcard, but
3939 ;; let's be general here.
3946 i
3959 ;; Shell wildcards should match the entire filename,
3960 ;; not its part. Make the regexp say so.
3962 \f
3965 "*Switches for `list-directory' to pass to `ls' for brief listing."
3971 "/PROTECTION/SIZE/DATE/OWNER/WIDTH=(OWNER:10)"
3973 "*Switches for `list-directory' to pass to `ls' for verbose listing."
3978 "Expand wildcard pattern PATTERN.
3979 This returns a list of file names which match the pattern.
3981 If PATTERN is written as an absolute relative file name,
3982 the values are absolute also.
3984 If PATTERN is written as a relative file name, it is interpreted
3985 relative to the current default directory, `default-directory'.
3986 The file names returned are normally also relative to the current
3987 default directory. However, if FULL is non-nil, they are absolute."
3991 ;; A list of all dirs that DIRPART specifies.
3992 ;; This can be more than one dir
3993 ;; if DIRPART contains wildcards.
3998 contents)
4003 ;; Filter out "." and ".."
4008 name))
4015 this-dir-contents)
4016 this-dir-contents)
4017 contents))))
4019 contents)))
4022 "Display a list of files in or matching DIRNAME, a la `ls'.
4023 DIRNAME is globbed by the shell if necessary.
4024 Prefix arg (second arg if noninteractive) means supply -l switch to `ls'.
4025 Actions controlled by variables `list-directory-brief-switches'
4026 and `list-directory-verbose-switches'."
4030 nil default-directory nil)
4031 pfx)))
4033 list-directory-brief-switches))
4034 buffer)
4047 ;; Finishing with-output-to-temp-buffer seems to clobber default-directory.
4055 "Quote characters special to the shell in PATTERN, leave wildcards alone.
4057 PATTERN is assumed to represent a file-name wildcard suitable for the
4058 underlying filesystem. For Unix and GNU/Linux, the characters from the
4060 the parts of the pattern which don't include wildcard characters are
4061 quoted with double quotes.
4062 Existing quote characters in PATTERN are left alone, so you can pass
4063 PATTERN that already quotes some of the special characters."
4067 ;; DOS/Windows don't allow `"' in file names. So if the
4068 ;; argument has quotes, we can safely assume it is already
4069 ;; quoted by the caller.
4071 ;; We quote [&()#$'] in case their shell is a port of a
4072 ;; Unixy shell. We quote [,=+] because stock DOS and
4073 ;; Windows shells require that in some cases, such as
4074 ;; passing arguments to batch files that use positional
4075 ;; arguments like %1.
4077 pattern
4080 end)
4097 pattern))))
4104 "*Program to get the amount of free space on a file system.
4105 We assume the output has the format of `df'.
4106 The value of this variable must be just a command name or file name;
4107 if you want to specify options, use `directory-free-space-args'.
4109 A value of nil disables this feature.
4111 If the function `file-system-info' is defined, it is always used in
4112 preference to the program given by this variable."
4118 "*Options to use when running `directory-free-space-program'."
4123 "Return the mount of free space on directory DIR's file system.
4124 The result is a string that gives the number of free 1KB blocks,
4125 or nil if the system call or the program which retrieve the infornmation
4126 fail.
4128 This function calls `file-system-info' if it is available, or invokes the
4129 program specified by `directory-free-space-program' if that is non-nil."
4130 ;; Try to find the number of free blocks. Non-Posix systems don't
4131 ;; always have df, but might have an equivalent system call.
4140 nil t nil
4141 directory-free-space-args
4142 dir)))
4143 ;; Usual format is a header line followed by a line of
4144 ;; numbers.
4149 ;; Move to the end of the "available blocks" number.
4152 ;; Copy it into AVAILABLE.
4158 ;; insert-directory
4159 ;; - must insert _exactly_one_line_ describing FILE if WILDCARD and
4160 ;; FULL-DIRECTORY-P is nil.
4161 ;; The single line of output must display FILE's name as it was
4162 ;; given, namely, an absolute path name.
4163 ;; - must insert exactly one line for each file if WILDCARD or
4164 ;; FULL-DIRECTORY-P is t, plus one optional "total" line
4165 ;; before the file lines, plus optional text after the file lines.
4166 ;; Lines are delimited by "\n", so filenames containing "\n" are not
4167 ;; allowed.
4168 ;; File lines should display the basename.
4169 ;; - must be consistent with
4170 ;; - functions dired-move-to-filename, (these two define what a file line is)
4171 ;; dired-move-to-end-of-filename,
4172 ;; dired-between-files, (shortcut for (not (dired-move-to-filename)))
4173 ;; dired-insert-headerline
4174 ;; dired-after-subdir-garbage (defines what a "total" line is)
4175 ;; - variable dired-subdir-regexp
4176 ;; - may be passed "--dired" as the first argument in SWITCHES.
4177 ;; Filename handlers might have to remove this switch if their
4178 ;; "ls" command does not support it.
4180 "Insert directory listing for FILE, formatted according to SWITCHES.
4181 Leaves point after the inserted text.
4182 SWITCHES may be a string of options, or a list of strings.
4183 Optional third arg WILDCARD means treat FILE as shell wildcard.
4184 Optional fourth arg FULL-DIRECTORY-P means file is a directory and
4185 switches do not contain `d', so that a full listing is expected.
4187 This works by running a directory listing program
4188 whose name is in the variable `insert-directory-program'.
4189 If WILDCARD, it also runs the shell specified by `shell-file-name'."
4190 ;; We need the directory in order to find the right handler.
4195 wildcard full-directory-p)
4200 ;; Read the actual directory using `insert-directory-program'.
4201 ;; RESULT gets the status code.
4203 ;; putting text property `dired-filename, decode one
4204 ;; bunch by one to preserve that property.
4206 ;; This is to control encoding the arguments in call-process.
4210 default-file-name-coding-system))))
4213 ;; Run ls in the directory part of the file pattern
4214 ;; using the last component as argument.
4221 shell-file-name nil t nil
4222 "-c"
4224 ""
4226 insert-directory-program
4227 " -d "
4229 switches
4231 " -- "
4232 ;; Quote some characters that have
4233 ;; special meanings in shells; but
4234 ;; don't quote the wildcards--we want
4235 ;; them to be special. We also
4236 ;; currently don't quote the quoting
4237 ;; characters in case people want to
4238 ;; use them explicitly to quote
4239 ;; wildcard characters.
4241 ;; SunOS 4.1.3, SVr4 and others need the "." to list the
4242 ;; directory if FILE is a symbolic link.
4244 insert-directory-program nil t nil
4248 ;; Split the switches at any spaces so we can
4249 ;; pass separate options as separate args.
4251 ;; Avoid lossage if FILE starts with `-'.
4259 file))))))))
4261 ;; If `insert-directory-program' failed, signal an error.
4263 ;; On non-Posix systems, we cannot open a directory, so
4264 ;; don't even try, because that will always result in
4265 ;; the ubiquitous "Access denied". Instead, show the
4266 ;; command line so the user can try to guess what went wrong.
4271 insert-directory-program
4273 file result)
4274 ;; Unix. Access the file to get a suitable error.
4291 ;; It seems that we can't trust ls's output as to
4292 ;; byte positions of filenames.
4299 ;; Now decode what read if necessary.
4301 file-name-coding-system
4302 default-file-name-coding-system
4304 val pos)
4308 ;; If no coding system is specified or detection is
4309 ;; requested, detect the coding.
4327 ;; Try to insert the amount of free space.
4330 ;; First find the line to put it on.
4334 ;; Replace "total" with "used", to avoid confusion.
4341 "Insert directory listing for FILE, formatted according to SWITCHES.
4343 Like `insert-directory', but if FILE does not exist, it inserts a
4344 message to that effect instead of signaling an error."
4347 ;; Simulate the message printed by `ls'.
4351 "Functions to call with no arguments to query about killing Emacs.
4352 If any of these functions returns nil, killing Emacs is cancelled.
4354 but `kill-emacs', the low level primitive, does not.
4358 "How to ask for confirmation when leaving Emacs.
4359 If nil, the default, don't ask at all. If the value is non-nil, it should
4360 be a predicate function such as `yes-or-no-p'."
4368 "Offer to save each buffer, then kill this Emacs process.
4369 With prefix arg, silently save all file-visiting buffers, then kill."
4378 ;; process-list is not defined on VMS.
4380 active)
4389 ;; Query the user for other things, perhaps.
4394 \f
4395 ;; We use /: as a prefix to "quote" a file name
4396 ;; so that magic file name handlers will not apply to it.
4400 file-name-handler-alist))
4402 ;; We depend on being the last handler on the list,
4403 ;; so that anything else which does need handling
4404 ;; has been handled already.
4405 ;; So it is safe for us to inhibit *all* magic file name handlers.
4414 default-directory))
4415 ;; Get a list of the indices of the args which are file names.
4418 ;; The first five are special because they
4419 ;; return a file name. We want to include the /:
4420 ;; in the return value.
4421 ;; So just avoid stripping it in the first place.
4427 ;; `identity' means just return the first arg
4428 ;; as stripped of its quoting.
4436 ;; For all other operations, treat the first argument only
4437 ;; as the file name.
4439 ;; Copy ARGUMENTS so we can replace elements in it.
4441 ;; Strip off the /: from the file names that have this handler.
4449 "/"
4455 \f
4479 ;;; files.el ends here