;;; files.el --- file input and output commands for Emacs
-;; Copyright (C) 1985, 1986, 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-;; 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1987, 1992, 1993, 1994, 1995, 1996,
+;; 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+;; 2006 Free Software Foundation, Inc.
;; Maintainer: FSF
(defcustom delete-auto-save-files t
- "*Non-nil means delete auto-save file when a buffer is saved or killed.
+ "Non-nil means delete auto-save file when a buffer is saved or killed.
Note that the auto-save file will not be deleted if the buffer is killed
when it has unsaved changes."
(defcustom directory-abbrev-alist
nil
- "*Alist of abbreviations for file directories.
+ "Alist of abbreviations for file directories.
A list of elements of the form (FROM . TO), each meaning to replace
FROM with TO when it appears in a directory name. This replacement is
done when setting up the default directory of a newly visited file.
;; Turn off backup files on VMS since it has version numbers.
(defcustom make-backup-files (not (eq system-type 'vax-vms))
- "*Non-nil means make a backup of a file the first time it is saved.
+ "Non-nil means make a backup of a file the first time it is saved.
This can be done by renaming the file or by copying.
Renaming means that Emacs renames the existing file so that it is a
(put 'backup-inhibited 'permanent-local t)
(defcustom backup-by-copying nil
- "*Non-nil means always use copying to create backup files.
+ "Non-nil means always use copying to create backup files.
See documentation of variable `make-backup-files'."
:type 'boolean
:group 'backup)
(defcustom backup-by-copying-when-linked nil
- "*Non-nil means use copying to create backups for files with multiple names.
+ "Non-nil means use copying to create backups for files with multiple names.
This causes the alternate names to refer to the latest version as edited.
This variable is relevant only if `backup-by-copying' is nil."
:type 'boolean
:group 'backup)
(defcustom backup-by-copying-when-mismatch nil
- "*Non-nil means create backups by copying if this preserves owner or group.
+ "Non-nil means create backups by copying if this preserves owner or group.
Renaming may still be used (subject to control of other variables)
when it would not result in changing the owner or group of the file;
that is, for files which are owned by you and whose group matches
:group 'backup)
(defcustom backup-by-copying-when-privileged-mismatch 200
- "*Non-nil means create backups by copying to preserve a privileged owner.
+ "Non-nil means create backups by copying to preserve a privileged owner.
Renaming may still be used (subject to control of other variables)
when it would not result in changing the owner of the file or if the owner
has a user id greater than the value of this variable. This is useful
Called with an absolute file name as argument, it returns t to enable backup.")
(defcustom buffer-offer-save nil
- "*Non-nil in a buffer means always offer to save buffer on exit.
+ "Non-nil in a buffer means always offer to save buffer on exit.
Do so even if the buffer is not visiting a file.
Automatically local in all buffers."
:type 'boolean
(make-variable-buffer-local 'buffer-offer-save)
(defcustom find-file-existing-other-name t
- "*Non-nil means find a file under alternative names, in existing buffers.
+ "Non-nil means find a file under alternative names, in existing buffers.
This means if any existing buffer is visiting the file you want
under another name, you get the existing buffer instead of a new buffer."
:type 'boolean
both at the file level and at the levels of the containing directories."
:type 'boolean
:group 'find-file)
+(put 'find-file-visit-truename 'safe-local-variable 'boolean)
(defcustom revert-without-query nil
- "*Specify which files should be reverted without query.
+ "Specify which files should be reverted without query.
The value is a list of regular expressions.
If the file name matches one of these regular expressions,
then `revert-buffer' reverts the file without querying
"Regexp recognizing file names which aren't allowed by the filesystem.")
(defcustom file-precious-flag nil
- "*Non-nil means protect against I/O errors while saving files.
+ "Non-nil means protect against I/O errors while saving files.
Some modes set this non-nil in particular buffers.
This feature works by writing the new contents into a temporary file
:group 'backup)
(defcustom version-control nil
- "*Control use of version numbers for backup files.
+ "Control use of version numbers for backup files.
t means make numeric backup versions unconditionally.
nil means make them for files that have some already.
`never' means do not make them."
(other :tag "Always" t))
:group 'backup
:group 'vc)
+(put 'version-control 'safe-local-variable
+ '(lambda (x) (or (booleanp x) (equal x 'never))))
(defcustom dired-kept-versions 2
- "*When cleaning directory, number of versions to keep."
+ "When cleaning directory, number of versions to keep."
:type 'integer
:group 'backup
:group 'dired)
(defcustom delete-old-versions nil
- "*If t, delete excess backup versions silently.
+ "If t, delete excess backup versions silently.
If nil, ask confirmation. Any other value prevents any trimming."
:type '(choice (const :tag "Delete" t)
(const :tag "Ask" nil)
:group 'backup)
(defcustom kept-old-versions 2
- "*Number of oldest versions to keep when a new numbered backup is made."
+ "Number of oldest versions to keep when a new numbered backup is made."
:type 'integer
:group 'backup)
+(put 'kept-old-versions 'safe-local-variable 'integerp)
(defcustom kept-new-versions 2
- "*Number of newest versions to keep when a new numbered backup is made.
+ "Number of newest versions to keep when a new numbered backup is made.
Includes the new backup. Must be > 0"
:type 'integer
:group 'backup)
+(put 'kept-new-versions 'safe-local-variable 'integerp)
(defcustom require-final-newline nil
- "*Whether to add a newline automatically at the end of the file.
+ "Whether to add a newline automatically at the end of the file.
A value of t means do this only when the file is about to be saved.
A value of `visit' means do this right after the file is visited.
:group 'editing-basics)
(defcustom mode-require-final-newline t
- "*Whether to add a newline at end of file, in certain major modes.
+ "Whether to add a newline at end of file, in certain major modes.
Those modes set `require-final-newline' to this value when you enable them.
They do so because they are often used for files that are supposed
to end in newlines, and the question is how to arrange that.
:version "22.1")
(defcustom auto-save-default t
- "*Non-nil says by default do auto-saving of every file-visiting buffer."
+ "Non-nil says by default do auto-saving of every file-visiting buffer."
:type 'boolean
:group 'auto-save)
(defcustom auto-save-visited-file-name nil
- "*Non-nil says auto-save a buffer in the file it is visiting, when practical.
+ "Non-nil says auto-save a buffer in the file it is visiting, when practical.
Normally auto-save files are written under other names."
:type 'boolean
:group 'auto-save)
;; Don't put "\\2" inside expand-file-name, since it will be
;; transformed to "/2" on DOS/Windows.
,(concat temporary-file-directory "\\2") t))
- "*Transforms to apply to buffer file name before making auto-save file name.
+ "Transforms to apply to buffer file name before making auto-save file name.
Each transform is a list (REGEXP REPLACEMENT UNIQUIFY):
REGEXP is a regular expression to match against the file name.
If it matches, `replace-match' is used to replace the
:version "21.1")
(defcustom save-abbrevs t
- "*Non-nil means save word abbrevs too when files are saved.
+ "Non-nil means save word abbrevs too when files are saved.
If `silently', don't ask the user before saving."
:type '(choice (const t) (const nil) (const silently))
:group 'abbrev)
(defcustom find-file-run-dired t
- "*Non-nil means allow `find-file' to visit directories.
+ "Non-nil means allow `find-file' to visit directories.
To visit the directory, `find-file' runs `find-directory-functions'."
:type 'boolean
:group 'find-file)
(defcustom find-directory-functions '(cvs-dired-noselect dired-noselect)
- "*List of functions to try in sequence to visit a directory.
+ "List of functions to try in sequence to visit a directory.
Each function is called with the directory name as the sole argument
and should return either a buffer or nil."
:type '(hook :options (cvs-dired-noselect dired-noselect))
'write-contents-functions "22.1")
(defcustom enable-local-variables t
- "*Control use of local variables in files you visit.
-The value can be t, nil or something else.
-A value of t means file local variables specifications are obeyed;
-nil means they are ignored; anything else means query.
+ "Control use of local variables in files you visit.
+The value can be t, nil, :safe, or something else.
+
+A value of t means file local variables specifications are obeyed
+if all the specified variable values are safe; if any values are
+not safe, Emacs queries you, once, whether to set them all.
+\(When you say yes to certain values, they are remembered as safe.)
+
+:safe means set the safe variables, and ignore the rest.
+:all means set all variables, whether safe or not.
+ (Don't set it permanently to :all.)
+nil means always ignore the file local variables.
+
+Any other value means always query you once whether to set them all.
+\(When you say yes to certain values, they are remembered as safe, but
+this has no effect when `enable-local-variables' is \"something else\".)
+
This variable also controls use of major modes specified in
a -*- line.
The command \\[normal-mode], when used interactively,
always obeys file local variable specifications and the -*- line,
and ignores this variable."
- :type '(choice (const :tag "Obey" t)
+ :type '(choice (const :tag "Query Unsafe" t)
+ (const :tag "Safe Only" :safe)
+ (const :tag "Do all" :all)
(const :tag "Ignore" nil)
(other :tag "Query" other))
:group 'find-file)
specified in a -*- line.")
(defcustom enable-local-eval 'maybe
- "*Control processing of the \"variable\" `eval' in a file's local variables.
+ "Control processing of the \"variable\" `eval' in a file's local variables.
The value can be t, nil or something else.
A value of t means obey `eval' variables;
nil means ignore them; anything else means query."
(defalias 'file-locked-p 'ignore))
(defcustom view-read-only nil
- "*Non-nil means buffers visiting files read-only do so in view mode.
+ "Non-nil means buffers visiting files read-only do so in view mode.
In fact, this means that all read-only buffers normally have
View mode enabled, including buffers that are read-only because
you visit a file you cannot alter, and buffers you make read-only
:type 'boolean
:group 'view)
+(defvar file-name-history nil
+ "History list of file names entered in the minibuffer.")
+\f
(put 'ange-ftp-completion-hook-function 'safe-magic t)
(defun ange-ftp-completion-hook-function (op &rest args)
"Provides support for ange-ftp host name completion.
This function's standard definition is trivial; it just returns
the argument. However, on Windows and DOS, replace invalid
-characters. On DOS, make sure to obey the 8.3 limitations. On
-Windows, turn Cygwin names into native names, and also turn
-slashes into backslashes if the shell requires it (see
+characters. On DOS, make sure to obey the 8.3 limitations.
+In the native Windows build, turn Cygwin names into native names,
+and also turn slashes into backslashes if the shell requires it (see
`w32-shell-dos-semantics').
See Info node `(elisp)Standard File Names' for more details."
- filename)
+ (if (eq system-type 'cygwin)
+ (let ((name (copy-sequence filename))
+ (start 0))
+ ;; Replace invalid filename characters with !
+ (while (string-match "[?*:<>|\"\000-\037]" name start)
+ (aset name (match-beginning 0) ?!)
+ (setq start (match-end 0)))
+ name)
+ filename))
(defun read-directory-name (prompt &optional dir default-dirname mustmatch initial)
"Read directory name, prompting with PROMPT and completing in directory DIR.
(when (file-directory-p dir)
(dolist (file (file-name-all-completions
(file-name-nondirectory string) dir))
- (push (if string-dir (concat string-dir file) file) names)
+ (add-to-list 'names (if string-dir (concat string-dir file) file))
(when (string-match suffix file)
(setq file (substring file 0 (match-beginning 0)))
(push (if string-dir (concat string-dir file) file) names)))))
(interactive
(list (completing-read "Load library: "
'locate-file-completion
- (cons load-path load-suffixes))))
+ (cons load-path (get-load-suffixes)))))
(load library))
(defun file-remote-p (file)
(pop-to-buffer buffer t norecord)
(raise-frame (window-frame (selected-window)))))
+(defun display-buffer-other-frame (buffer)
+ "Switch to buffer BUFFER in another frame.
+This uses the function `display-buffer' as a subroutine; see its
+documentation for additional customization information."
+ (interactive "BDisplay buffer in other frame: ")
+ (let ((pop-up-frames t)
+ same-window-buffer-names same-window-regexps
+ (old-window (selected-window))
+ new-window)
+ (setq new-window (display-buffer buffer t))
+ (lower-frame (window-frame new-window))
+ (make-frame-invisible (window-frame old-window))
+ (make-frame-visible (window-frame old-window))))
+
(defvar find-file-default nil
"Used within `find-file-read-args'.")
Interactively, or if WILDCARDS is non-nil in a call from Lisp,
expand wildcards (if any) and visit multiple files. You can
-suppress wildcard expansion by setting `find-file-wildcards'.
+suppress wildcard expansion by setting `find-file-wildcards' to nil.
To visit a file without any kind of conversion and without
automatically choosing a major mode, use \\[find-file-literally]."
(mapcar 'switch-to-buffer (cdr value))))
(switch-to-buffer-other-frame value))))
-(defun find-file-existing (filename &optional wildcards)
- "Edit the existing file FILENAME.
-Like \\[find-file] but only allow files that exists."
- (interactive (find-file-read-args "Find existing file: " t))
- (unless (file-exists-p filename) (error "%s does not exist" filename))
- (find-file filename wildcards)
- (current-buffer))
+(defun find-file-existing (filename)
+ "Edit the existing file FILENAME.
+Like \\[find-file] but only allow a file that exists, and do not allow
+file names with wildcards."
+ (interactive (nbutlast (find-file-read-args "Find existing file: " t)))
+ (if (and (not (interactive-p)) (not (file-exists-p filename)))
+ (error "%s does not exist" filename)
+ (find-file filename)
+ (current-buffer)))
(defun find-file-read-only (filename &optional wildcards)
"Edit file FILENAME but don't allow changes.
\(presumably by mistake), use this command to visit the file you really want.
Interactively, or if WILDCARDS is non-nil in a call from Lisp,
-expand wildcards (if any) and replace the file with multiple files."
+expand wildcards (if any) and replace the file with multiple files.
+
+If the current buffer is an indirect buffer, or the base buffer
+for one or more indirect buffers, the other buffer(s) are not
+killed."
(interactive
(let ((file buffer-file-name)
(file-name nil)
This also substitutes \"~\" for the user's home directory and
removes automounter prefixes (see the variable `automount-dir-prefix')."
;; Get rid of the prefixes added by the automounter.
- (if (and automount-dir-prefix
- (string-match automount-dir-prefix filename)
- (file-exists-p (file-name-directory
- (substring filename (1- (match-end 0))))))
- (setq filename (substring filename (1- (match-end 0)))))
- (let ((tail directory-abbrev-alist))
- ;; If any elt of directory-abbrev-alist matches this name,
- ;; abbreviate accordingly.
- (while tail
- (if (string-match (car (car tail)) filename)
+ (save-match-data
+ (if (and automount-dir-prefix
+ (string-match automount-dir-prefix filename)
+ (file-exists-p (file-name-directory
+ (substring filename (1- (match-end 0))))))
+ (setq filename (substring filename (1- (match-end 0)))))
+ (let ((tail directory-abbrev-alist))
+ ;; If any elt of directory-abbrev-alist matches this name,
+ ;; abbreviate accordingly.
+ (while tail
+ (if (string-match (car (car tail)) filename)
+ (setq filename
+ (concat (cdr (car tail)) (substring filename (match-end 0)))))
+ (setq tail (cdr tail)))
+ ;; Compute and save the abbreviated homedir name.
+ ;; We defer computing this until the first time it's needed, to
+ ;; give time for directory-abbrev-alist to be set properly.
+ ;; We include a slash at the end, to avoid spurious matches
+ ;; such as `/usr/foobar' when the home dir is `/usr/foo'.
+ (or abbreviated-home-dir
+ (setq abbreviated-home-dir
+ (let ((abbreviated-home-dir "$foo"))
+ (concat "^" (abbreviate-file-name (expand-file-name "~"))
+ "\\(/\\|\\'\\)"))))
+
+ ;; If FILENAME starts with the abbreviated homedir,
+ ;; make it start with `~' instead.
+ (if (and (string-match abbreviated-home-dir filename)
+ ;; If the home dir is just /, don't change it.
+ (not (and (= (match-end 0) 1)
+ (= (aref filename 0) ?/)))
+ ;; MS-DOS root directories can come with a drive letter;
+ ;; Novell Netware allows drive letters beyond `Z:'.
+ (not (and (or (eq system-type 'ms-dos)
+ (eq system-type 'cygwin)
+ (eq system-type 'windows-nt))
+ (save-match-data
+ (string-match "^[a-zA-`]:/$" filename)))))
(setq filename
- (concat (cdr (car tail)) (substring filename (match-end 0)))))
- (setq tail (cdr tail)))
- ;; Compute and save the abbreviated homedir name.
- ;; We defer computing this until the first time it's needed, to
- ;; give time for directory-abbrev-alist to be set properly.
- ;; We include a slash at the end, to avoid spurious matches
- ;; such as `/usr/foobar' when the home dir is `/usr/foo'.
- (or abbreviated-home-dir
- (setq abbreviated-home-dir
- (let ((abbreviated-home-dir "$foo"))
- (concat "^" (abbreviate-file-name (expand-file-name "~"))
- "\\(/\\|$\\)"))))
-
- ;; If FILENAME starts with the abbreviated homedir,
- ;; make it start with `~' instead.
- (if (and (string-match abbreviated-home-dir filename)
- ;; If the home dir is just /, don't change it.
- (not (and (= (match-end 0) 1)
- (= (aref filename 0) ?/)))
- ;; MS-DOS root directories can come with a drive letter;
- ;; Novell Netware allows drive letters beyond `Z:'.
- (not (and (or (eq system-type 'ms-dos)
- (eq system-type 'cygwin)
- (eq system-type 'windows-nt))
- (save-match-data
- (string-match "^[a-zA-`]:/$" filename)))))
- (setq filename
- (concat "~"
- (substring filename (match-beginning 1) (match-end 1))
- (substring filename (match-end 0)))))
- filename))
+ (concat "~"
+ (match-string 1 filename)
+ (substring filename (match-end 0)))))
+ filename)))
(defcustom find-file-not-true-dirname-list nil
- "*List of logical names for which visiting shouldn't save the true dirname.
+ "List of logical names for which visiting shouldn't save the true dirname.
On VMS, when you visit a file using a logical name that searches a path,
you may or may not want the visited file name to record the specific
directory where the file was found. If you *do not* want that, add the logical
(number (nthcdr 10 attributes))
(list (buffer-list)) found)
(and buffer-file-numbers-unique
- number
+ (car-safe number) ;Make sure the inode is not just nil.
(while (and (not found) list)
(with-current-buffer (car list)
(if (and buffer-file-name
found))))
\f
(defcustom find-file-wildcards t
- "*Non-nil means file-visiting commands should handle wildcards.
+ "Non-nil means file-visiting commands should handle wildcards.
For example, if you specify `*.c', that would visit all the files
whose names match the pattern."
:group 'files
:type 'boolean)
(defcustom find-file-suppress-same-file-warnings nil
- "*Non-nil means suppress warning messages for symlinked files.
+ "Non-nil means suppress warning messages for symlinked files.
When nil, Emacs prints a warning when visiting a file that is already
visited, but with a different name. Setting this option to t
suppresses this warning."
;; hexl-mode.
(not (eq major-mode 'hexl-mode)))
(if (buffer-modified-p)
- (if (y-or-n-p (if rawfile
- "Save file and revisit literally? "
- "Save file and revisit non-literally? "))
+ (if (y-or-n-p
+ (format
+ (if rawfile
+ "The file %s is already visited normally,
+and you have edited the buffer. Now you have asked to visit it literally,
+meaning no coding system handling, format conversion, or local variables.
+Emacs can only visit a file in one way at a time.
+
+Do you want to save the file, and visit it literally instead? "
+ "The file %s is already visited literally,
+meaning no coding system handling, format conversion, or local variables.
+You have edited the buffer. Now you have asked to visit the file normally,
+but Emacs can only visit a file in one way at a time.
+
+Do you want to save the file, and visit it normally instead? ")
+ (file-name-nondirectory filename)))
(progn
(save-buffer)
(find-file-noselect-1 buf filename nowarn
rawfile truename number))
- (if (y-or-n-p (if rawfile
- "Discard your edits and revisit file literally? "
- "Discard your edits and revisit file non-literally? "))
+ (if (y-or-n-p
+ (format
+ (if rawfile
+ "\
+Do you want to discard your changes, and visit the file literally now? "
+ "\
+Do you want to discard your changes, and visit the file normally now? ")))
(find-file-noselect-1 buf filename nowarn
rawfile truename number)
(error (if rawfile "File already visited non-literally"
"File already visited literally"))))
- (if (y-or-n-p (if rawfile
- "Revisit file literally? "
- "Revisit file non-literally? "))
+ (if (y-or-n-p
+ (format
+ (if rawfile
+ "The file %s is already visited normally.
+You have asked to visit it literally,
+meaning no coding system decoding, format conversion, or local variables.
+But Emacs can only visit a file in one way at a time.
+
+Do you want to revisit the file literally now? "
+ "The file %s is already visited literally,
+meaning no coding system decoding, format conversion, or local variables.
+You have asked to visit it normally,
+but Emacs can only visit a file in one way at a time.
+
+Do you want to revisit the file normally now? ")
+ (file-name-nondirectory filename)))
(find-file-noselect-1 buf filename nowarn
rawfile truename number)
(error (if rawfile "File already visited non-literally"
(kill-buffer buf)
(signal 'file-error (list "File is not readable"
filename)))
- ;; Run find-file-not-found-hooks until one returns non-nil.
+ ;; Run find-file-not-found-functions until one returns non-nil.
(or (run-hook-with-args-until-success 'find-file-not-found-functions)
;; If they fail too, set error.
(setq error t)))))
(not (member logical find-file-not-true-dirname-list)))
(setq buffer-file-name buffer-file-truename))
(if find-file-visit-truename
- (setq buffer-file-name
- (setq filename
- (expand-file-name buffer-file-truename))))
+ (setq buffer-file-name (expand-file-name buffer-file-truename)))
;; Set buffer's default directory to that of the file.
(setq default-directory (file-name-directory buffer-file-name))
;; Turn off backup files for certain file names. Since
This function is called automatically from `find-file'. In that case,
we may set up the file-specified mode and local variables,
-depending on the value of `enable-local-variables': if it is t, we do;
-if it is nil, we don't; otherwise, we query.
+depending on the value of `enable-local-variables'.
In addition, if `local-enable-local-variables' is nil, we do
not set local variables (though we do notice a mode specified with -*-.)
("\\.ad[abs]\\'" . ada-mode)
("\\.ad[bs].dg\\'" . ada-mode)
("\\.\\([pP]\\([Llm]\\|erl\\|od\\)\\|al\\)\\'" . perl-mode)
+ ("Imakefile\\'" . makefile-imake-mode)
+ ("Makeppfile\\(?:\\.mk\\)?\\'" . makefile-makepp-mode) ; Put this before .mk
+ ("\\.makepp\\'" . makefile-makepp-mode)
,@(if (memq system-type '(berkeley-unix next-mach darwin))
'(("\\.mk\\'" . makefile-bsdmake-mode)
("GNUmakefile\\'" . makefile-gmake-mode)
("[Mm]akefile\\'" . makefile-bsdmake-mode))
'(("\\.mk\\'" . makefile-gmake-mode) ; Might be any make, give Gnu the host advantage
("[Mm]akefile\\'" . makefile-gmake-mode)))
- ("Makeppfile\\'" . makefile-makepp-mode)
("\\.am\\'" . makefile-automake-mode)
;; Less common extensions come here
;; so more common ones above are found faster.
("\\.[sS]\\'" . asm-mode)
("\\.asm\\'" . asm-mode)
("[cC]hange\\.?[lL]og?\\'" . change-log-mode)
- ("[cC]hange[lL]og\\.[0-9]+\\'" . change-log-mode)
+ ("[cC]hange[lL]og[-.][0-9]+\\'" . change-log-mode)
("\\$CHANGE_LOG\\$\\.TXT" . change-log-mode)
("\\.scm\\.[0-9]*\\'" . scheme-mode)
("\\.[ck]?sh\\'\\|\\.shar\\'\\|/\\.z?profile\\'" . sh-mode)
("\\.tar\\'" . tar-mode)
;; The list of archive file extensions should be in sync with
;; `auto-coding-alist' with `no-conversion' coding system.
- ("\\.\\(arc\\|zip\\|lzh\\|zoo\\|[jew]ar\\|xpi\\)\\'" . archive-mode)
- ("\\.\\(ARC\\|ZIP\\|LZH\\|ZOO\\|[JEW]AR\\|XPI\\)\\'" . archive-mode)
- ("\\.sx[dmicw]\\'" . archive-mode) ; OpenOffice.org
+ ("\\.\\(arc\\|zip\\|lzh\\|lha\\|zoo\\|[jew]ar\\|xpi\\)\\'" . archive-mode)
+ ("\\.\\(ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\)\\'" . archive-mode)
+ ("\\.\\(sx[dmicw]\\|odt\\)\\'" . archive-mode) ; OpenOffice.org
;; Mailer puts message to be edited in
;; /tmp/Re.... or Message
("\\`/tmp/Re" . text-mode)
("/Message[0-9]*\\'" . text-mode)
- ("/drafts/[0-9]+\\'" . mh-letter-mode)
("\\.zone\\'" . zone-mode)
;; some news reader is reported to use this
("\\`/tmp/fol/" . text-mode)
If the file name matches `inhibit-first-line-modes-regexps',
then `auto-mode-alist' is not processed.
+The extensions whose FUNCTION is `archive-mode' should also
+appear in `auto-coding-alist' with `no-conversion' coding system.
+
See also `interpreter-mode-alist', which detects executable script modes
based on the interpreters they specify to run,
and `magic-mode-alist', which determines modes based on file contents.")
(defvar magic-mode-alist
`(;; The < comes before the groups (but the first) to reduce backtracking.
;; TODO: UTF-16 <?xml may be preceded by a BOM 0xff 0xfe or 0xfe 0xff.
+ ;; We use [ \t\n] instead of `\\s ' to make regex overflow less likely.
(,(let* ((incomment-re "\\(?:[^-]\\|-[^-]\\)")
- (comment-re (concat "\\(?:!--" incomment-re "*-->\\s *<\\)")))
- (concat "\\(?:<\\?xml\\s +[^>]*>\\)?\\s *<"
+ (comment-re (concat "\\(?:!--" incomment-re "*-->[ \t\n]*<\\)")))
+ (concat "\\(?:<\\?xml[ \t\n]+[^>]*>\\)?[ \t\n]*<"
comment-re "*"
- "\\(?:!DOCTYPE\\s +[^>]*>\\s *<\\s *" comment-re "*\\)?"
+ "\\(?:!DOCTYPE[ \t\n]+[^>]*>[ \t\n]*<[ \t\n]*" comment-re "*\\)?"
"[Hh][Tt][Mm][Ll]"))
. html-mode)
;; These two must come after html, because they are more general:
("<\\?xml " . xml-mode)
(,(let* ((incomment-re "\\(?:[^-]\\|-[^-]\\)")
- (comment-re (concat "\\(?:!--" incomment-re "*-->\\s *<\\)")))
- (concat "\\s *<" comment-re "*!DOCTYPE "))
+ (comment-re (concat "\\(?:!--" incomment-re "*-->[ \t\n]*<\\)")))
+ (concat "[ \t\n]*<" comment-re "*!DOCTYPE "))
. sgml-mode)
("%![^V]" . ps-mode)
("# xmcd " . conf-unix-mode))
If FUNCTION is nil, then it is not called. (That is a way of saying
\"allow `auto-mode-alist' to decide for these files.\")")
+(defvar magic-mode-regexp-match-limit 4000
+ "Upper limit on `magic-mode-alist' regexp matches.")
+
(defun set-auto-mode (&optional keep-mode-if-same)
"Select major mode appropriate for current buffer.
(setq done t)
(or (set-auto-mode-0 mode keep-mode-if-same)
;; continuing would call minor modes again, toggling them off
- (throw 'nop nil)))))
+ (throw 'nop nil))))))
+ (unless done
;; If we didn't, look for an interpreter specified in the first line.
;; As a special case, allow for things like "#!/bin/env perl", which
;; finds the interpreter anywhere in $PATH.
(unless done
(if (setq done (save-excursion
(goto-char (point-min))
- (assoc-default nil magic-mode-alist
- (lambda (re dummy)
- (looking-at re)))))
+ (save-restriction
+ (narrow-to-region (point-min)
+ (min (point-max)
+ (+ (point-min) magic-mode-regexp-match-limit)))
+ (assoc-default nil magic-mode-alist
+ (lambda (re dummy)
+ (looking-at re))))))
(set-auto-mode-0 done keep-mode-if-same)
;; Compare the filename against the entries in auto-mode-alist.
(if buffer-file-name
(setq end (point))
(goto-char beg)
end))))
+\f
+;;; Handling file local variables
+
+(defvar ignored-local-variables
+ '(ignored-local-variables safe-local-variable-values)
+ "Variables to be ignored in a file's local variable spec.")
+
+(defvar hack-local-variables-hook nil
+ "Normal hook run after processing a file's local variables specs.
+Major modes can use this to examine user-specified local variables
+in order to initialize other data structure based on them.")
+
+(defcustom safe-local-variable-values nil
+ "List variable-value pairs that are considered safe.
+Each element is a cons cell (VAR . VAL), where VAR is a variable
+symbol and VAL is a value that is considered safe."
+ :group 'find-file
+ :type 'alist)
+
+(defcustom safe-local-eval-forms nil
+ "Expressions that are considered safe in an `eval:' local variable.
+Add expressions to this list if you want Emacs to evaluate them, when
+they appear in an `eval' local variable specification, without first
+asking you for confirmation."
+ :group 'find-file
+ :version "22.1"
+ :type '(repeat sexp))
-(defun hack-local-variables-confirm (string flag-to-check)
- (or (eq flag-to-check t)
- (and flag-to-check
- (save-window-excursion
- (condition-case nil
- (switch-to-buffer (current-buffer))
- (error
- ;; If we fail to switch in the selected window,
- ;; it is probably a minibuffer or dedicated window.
- ;; So try another window.
- (let ((pop-up-frames nil))
- ;; Refrain from popping up frames since it can't
- ;; be undone by save-window-excursion.
- (pop-to-buffer (current-buffer)))))
- (save-excursion
- (beginning-of-line)
- (set-window-start (selected-window) (point)))
- (y-or-n-p (format string
- (if buffer-file-name
- (file-name-nondirectory buffer-file-name)
- (concat "buffer " (buffer-name)))))))))
+;; Risky local variables:
+(mapc (lambda (var) (put var 'risky-local-variable t))
+ '(after-load-alist
+ auto-mode-alist
+ buffer-auto-save-file-name
+ buffer-file-name
+ buffer-file-truename
+ buffer-undo-list
+ dabbrev-case-fold-search
+ dabbrev-case-replace
+ debugger
+ default-text-properties
+ display-time-string
+ enable-local-eval
+ enable-local-variables
+ eval
+ exec-directory
+ exec-path
+ file-name-handler-alist
+ font-lock-defaults
+ format-alist
+ frame-title-format
+ global-mode-string
+ header-line-format
+ icon-title-format
+ ignored-local-variables
+ imenu--index-alist
+ imenu-generic-expression
+ inhibit-quit
+ input-method-alist
+ load-path
+ max-lisp-eval-depth
+ max-specpdl-size
+ minor-mode-alist
+ minor-mode-map-alist
+ minor-mode-overriding-map-alist
+ mode-line-buffer-identification
+ mode-line-format
+ mode-line-modes
+ mode-line-modified
+ mode-line-mule-info
+ mode-line-position
+ mode-line-process
+ mode-name
+ outline-level
+ overriding-local-map
+ overriding-terminal-local-map
+ parse-time-rules
+ process-environment
+ rmail-output-file-alist
+ safe-local-variable-values
+ safe-local-eval-forms
+ save-some-buffers-action-alist
+ special-display-buffer-names
+ standard-input
+ standard-output
+ unread-command-events
+ vc-mode))
+
+;; Safe local variables:
+;;
+;; For variables defined by major modes, the safety declarations can go into
+;; the major mode's file, since that will be loaded before file variables are
+;; processed.
+;;
+;; For variables defined by minor modes, put the safety declarations in the
+;; file defining the minor mode after the defcustom/defvar using an autoload
+;; cookie, e.g.:
+;;
+;; ;;;###autoload(put 'variable 'safe-local-variable 'stringp)
+;;
+;; Otherwise, when Emacs visits a file specifying that local variable, the
+;; minor mode file may not be loaded yet.
+;;
+;; For variables defined in the C source code the declaration should go here:
+
+(mapc (lambda (pair)
+ (put (car pair) 'safe-local-variable (cdr pair)))
+ '((buffer-read-only . booleanp) ;; C source code
+ (fill-column . integerp) ;; C source code
+ (indent-tabs-mode . booleanp) ;; C source code
+ (left-margin . integerp) ;; C source code
+ (no-update-autoloads . booleanp)
+ (tab-width . integerp) ;; C source code
+ (truncate-lines . booleanp))) ;; C source code
+
+(put 'c-set-style 'safe-local-eval-function t)
+
+(defun hack-local-variables-confirm (vars unsafe-vars risky-vars)
+ (if noninteractive
+ nil
+ (let ((name (if buffer-file-name
+ (file-name-nondirectory buffer-file-name)
+ (concat "buffer " (buffer-name))))
+ (offer-save (and (eq enable-local-variables t) unsafe-vars))
+ prompt char)
+ (save-window-excursion
+ (let ((buf (get-buffer-create "*Local Variables*")))
+ (pop-to-buffer buf)
+ (set (make-local-variable 'cursor-type) nil)
+ (erase-buffer)
+ (if unsafe-vars
+ (insert "The local variables list in " name
+ "\ncontains values that may not be safe (*)"
+ (if risky-vars
+ ", and variables that are risky (**)."
+ "."))
+ (if risky-vars
+ (insert "The local variables list in " name
+ "\ncontains variables that are risky (**).")
+ (insert "A local variables list is specified in " name ".")))
+ (insert "\n\nDo you want to apply it? You can type
+y -- to apply the local variables list.
+n -- to ignore the local variables list.")
+ (if offer-save
+ (insert "
+! -- to apply the local variables list, and permanently mark these
+ values (*) as safe (in the future, they will be set automatically.)\n\n")
+ (insert "\n\n"))
+ (dolist (elt vars)
+ (cond ((member elt unsafe-vars)
+ (insert " * "))
+ ((member elt risky-vars)
+ (insert " ** "))
+ (t
+ (insert " ")))
+ (princ (car elt) buf)
+ (insert " : ")
+ ;; Make strings with embedded whitespace easier to read.
+ (let ((print-escape-newlines t))
+ (prin1 (cdr elt) buf))
+ (insert "\n"))
+ (setq prompt
+ (format "Please type %s%s: "
+ (if offer-save "y, n, or !" "y or n")
+ (if (< (line-number-at-pos) (window-body-height))
+ ""
+ ", or C-v to scroll")))
+ (goto-char (point-min))
+ (let ((cursor-in-echo-area t)
+ (exit-chars
+ (if offer-save '(?! ?y ?n ?\s ?\C-g) '(?y ?n ?\s ?\C-g)))
+ done)
+ (while (not done)
+ (message prompt)
+ (setq char (read-event))
+ (if (numberp char)
+ (if (eq char ?\C-v)
+ (condition-case nil
+ (scroll-up)
+ (error (goto-char (point-min))))
+ (setq done (memq (downcase char) exit-chars))))))
+ (setq char (downcase char))
+ (when (and offer-save (= char ?!) unsafe-vars)
+ (dolist (elt unsafe-vars)
+ (add-to-list 'safe-local-variable-values elt))
+ ;; When this is called from desktop-restore-file-buffer,
+ ;; coding-system-for-read may be non-nil. Reset it before
+ ;; writing to .emacs.
+ (if (or custom-file user-init-file)
+ (let ((coding-system-for-read nil))
+ (customize-save-variable
+ 'safe-local-variable-values
+ safe-local-variable-values))))
+ (kill-buffer buf)
+ (or (= char ?!)
+ (= char ?\s)
+ (= char ?y)))))))
(defun hack-local-variables-prop-line (&optional mode-only)
- "Set local variables specified in the -*- line.
+ "Return local variables specified in the -*- line.
Ignore any specification for `mode:' and `coding:';
`set-auto-mode' should already have handled `mode:',
`set-auto-coding' should already have handled `coding:'.
-If MODE-ONLY is non-nil, all we do is check whether the major mode
-is specified, returning t if it is specified."
+
+If MODE-ONLY is non-nil, all we do is check whether the major
+mode is specified, returning t if it is specified. Otherwise,
+return an alist of elements (VAR . VAL), where VAR is a variable
+and VAL is the specified value."
(save-excursion
(goto-char (point-min))
- (let ((result nil)
- (end (set-auto-mode-1))
- mode-specified
- (enable-local-variables
- (and local-enable-local-variables enable-local-variables)))
+ (let ((end (set-auto-mode-1))
+ result mode-specified)
;; Parse the -*- line into the RESULT alist.
;; Also set MODE-SPECIFIED if we see a spec or `mode'.
(cond ((not end)
;; There used to be a downcase here,
;; but the manual didn't say so,
;; and people want to set var names that aren't all lc.
- (let ((key (intern (buffer-substring
- (match-beginning 1)
- (match-end 1))))
+ (let ((key (intern (match-string 1)))
(val (save-restriction
(narrow-to-region (point) end)
(read (current-buffer)))))
;; so we must do that here as well.
;; That is inconsistent, but we're stuck with it.
;; The same can be said for `coding' in set-auto-coding.
- (or (equal (downcase (symbol-name key)) "mode")
+ (or (and (equal (downcase (symbol-name key)) "mode")
+ (setq mode-specified t))
(equal (downcase (symbol-name key)) "coding")
- (setq result (cons (cons key val) result)))
- (if (equal (downcase (symbol-name key)) "mode")
- (setq mode-specified t))
- (skip-chars-forward " \t;")))
- (setq result (nreverse result))))
-
- (if mode-only mode-specified
- (if (and result
- (or mode-only
- (hack-local-variables-confirm
- "Set local variables as specified in -*- line of %s? "
- enable-local-variables)))
- (let ((enable-local-eval enable-local-eval))
- (while result
- (hack-one-local-variable (car (car result)) (cdr (car result)))
- (setq result (cdr result)))))
- nil))))
-
-(defvar hack-local-variables-hook nil
- "Normal hook run after processing a file's local variables specs.
-Major modes can use this to examine user-specified local variables
-in order to initialize other data structure based on them.")
+ (condition-case nil
+ (push (cons (if (eq key 'eval)
+ 'eval
+ (indirect-variable key))
+ val) result)
+ (error nil)))
+ (skip-chars-forward " \t;")))))
+
+ (if mode-only
+ mode-specified
+ result))))
(defun hack-local-variables (&optional mode-only)
"Parse and put into effect this buffer's local variables spec.
If MODE-ONLY is non-nil, all we do is check whether the major mode
is specified, returning t if it is specified."
- (let ((mode-specified
- ;; If MODE-ONLY is t, we check here for specifying the mode
- ;; in the -*- line. If MODE-ONLY is nil, we process
- ;; the -*- line here.
- (hack-local-variables-prop-line mode-only))
- (enable-local-variables
- (and local-enable-local-variables enable-local-variables)))
- ;; Look for "Local variables:" line in last page.
- (save-excursion
- (goto-char (point-max))
- (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move)
- (when (let ((case-fold-search t))
- (and (search-forward "Local Variables:" nil t)
- (or mode-only
- (hack-local-variables-confirm
- "Set local variables as specified at end of %s? "
- enable-local-variables))))
- (skip-chars-forward " \t")
- (let ((enable-local-eval enable-local-eval)
- ;; suffix is what comes after "local variables:" in its line.
- (suffix
- (concat
- (regexp-quote (buffer-substring (point) (line-end-position)))
- "$"))
- ;; prefix is what comes before "local variables:" in its line.
- (prefix
- (concat "^" (regexp-quote
- (buffer-substring (line-beginning-position)
- (match-beginning 0)))))
- beg)
-
- (forward-line 1)
- (let ((startpos (point))
- endpos
- (thisbuf (current-buffer)))
- (save-excursion
- (unless (let ((case-fold-search t))
- (re-search-forward
- (concat prefix "[ \t]*End:[ \t]*" suffix)
- nil t))
- (error "Local variables list is not properly terminated"))
- (beginning-of-line)
- (setq endpos (point)))
-
- (with-temp-buffer
- (insert-buffer-substring thisbuf startpos endpos)
- (goto-char (point-min))
- (subst-char-in-region (point) (point-max) ?\^m ?\n)
- (while (not (eobp))
- ;; Discard the prefix.
- (if (looking-at prefix)
- (delete-region (point) (match-end 0))
- (error "Local variables entry is missing the prefix"))
- (end-of-line)
- ;; Discard the suffix.
- (if (looking-back suffix)
- (delete-region (match-beginning 0) (point))
- (error "Local variables entry is missing the suffix"))
- (forward-line 1))
- (goto-char (point-min))
-
- (while (not (eobp))
- ;; Find the variable name; strip whitespace.
- (skip-chars-forward " \t")
- (setq beg (point))
- (skip-chars-forward "^:\n")
- (if (eolp) (error "Missing colon in local variables entry"))
- (skip-chars-backward " \t")
- (let* ((str (buffer-substring beg (point)))
- (var (read str))
- val)
- ;; Read the variable value.
- (skip-chars-forward "^:")
- (forward-char 1)
- (setq val (read (current-buffer)))
- (if mode-only
- (if (eq var 'mode)
- (setq mode-specified t))
- ;; Set the variable. "Variables" mode and eval are funny.
- (with-current-buffer thisbuf
- (hack-one-local-variable var val))))
- (forward-line 1)))))))
- (unless mode-only
- (run-hooks 'hack-local-variables-hook))
- mode-specified))
-
-(defvar ignored-local-variables ()
- "Variables to be ignored in a file's local variable spec.")
-
-;; Get confirmation before setting these variables as locals in a file.
-(put 'debugger 'risky-local-variable t)
-(put 'enable-local-eval 'risky-local-variable t)
-(put 'ignored-local-variables 'risky-local-variable t)
-(put 'eval 'risky-local-variable t)
-(put 'file-name-handler-alist 'risky-local-variable t)
-(put 'inhibit-quit 'risky-local-variable t)
-(put 'minor-mode-alist 'risky-local-variable t)
-(put 'minor-mode-map-alist 'risky-local-variable t)
-(put 'minor-mode-overriding-map-alist 'risky-local-variable t)
-(put 'overriding-local-map 'risky-local-variable t)
-(put 'overriding-terminal-local-map 'risky-local-variable t)
-(put 'auto-mode-alist 'risky-local-variable t)
-(put 'after-load-alist 'risky-local-variable t)
-(put 'buffer-file-name 'risky-local-variable t)
-(put 'buffer-undo-list 'risky-local-variable t)
-(put 'buffer-auto-save-file-name 'risky-local-variable t)
-(put 'buffer-file-truename 'risky-local-variable t)
-(put 'default-text-properties 'risky-local-variable t)
-(put 'exec-path 'risky-local-variable t)
-(put 'load-path 'risky-local-variable t)
-(put 'exec-directory 'risky-local-variable t)
-(put 'process-environment 'risky-local-variable t)
-(put 'dabbrev-case-fold-search 'risky-local-variable t)
-(put 'dabbrev-case-replace 'risky-local-variable t)
-;; Don't wait for outline.el to be loaded, for the sake of outline-minor-mode.
-(put 'outline-level 'risky-local-variable t)
-(put 'rmail-output-file-alist 'risky-local-variable t)
-(put 'font-lock-defaults 'risky-local-variable t)
-(put 'special-display-buffer-names 'risky-local-variable t)
-(put 'frame-title-format 'risky-local-variable t)
-(put 'global-mode-string 'risky-local-variable t)
-(put 'header-line-format 'risky-local-variable t)
-(put 'icon-title-format 'risky-local-variable t)
-(put 'input-method-alist 'risky-local-variable t)
-(put 'format-alist 'risky-local-variable t)
-(put 'vc-mode 'risky-local-variable t)
-(put 'imenu-generic-expression 'risky-local-variable t)
-(put 'imenu--index-alist 'risky-local-variable t)
-(put 'standard-input 'risky-local-variable t)
-(put 'standard-output 'risky-local-variable t)
-(put 'unread-command-events 'risky-local-variable t)
-(put 'max-lisp-eval-depth 'risky-local-variable t)
-(put 'max-specpdl-size 'risky-local-variable t)
-(put 'mode-line-format 'risky-local-variable t)
-(put 'mode-line-modified 'risky-local-variable t)
-(put 'mode-line-mule-info 'risky-local-variable t)
-(put 'mode-line-buffer-identification 'risky-local-variable t)
-(put 'mode-line-modes 'risky-local-variable t)
-(put 'mode-line-position 'risky-local-variable t)
-(put 'mode-line-process 'risky-local-variable t)
-(put 'mode-name 'risky-local-variable t)
-(put 'display-time-string 'risky-local-variable t)
-(put 'parse-time-rules 'risky-local-variable t)
-
-;; This case is safe because the user gets to check it before it is used.
-(put 'compile-command 'safe-local-variable 'stringp)
-
-(defun risky-local-variable-p (sym &optional val)
- "Non-nil if SYM could be dangerous as a file-local variable with value VAL.
-If VAL is nil or omitted, the question is whether any value might be
-dangerous."
- (let ((safep (get sym 'safe-local-variable)))
- (or (get sym 'risky-local-variable)
- (and (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-commands?$\\|-predicates?$\\|font-lock-keywords$\\|font-lock-keywords-[0-9]+$\\|font-lock-syntactic-keywords$\\|-frame-alist$\\|-mode-alist$\\|-map$\\|-map-alist$"
- (symbol-name sym))
- (not safep))
- ;; If the safe-local-variable property isn't t or nil,
- ;; then it must return non-nil on the proposed value to be safe.
- (and (not (memq safep '(t nil)))
- (or (null val)
- (not (funcall safep val)))))))
-
-(defcustom safe-local-eval-forms nil
- "*Expressions that are considered \"safe\" in an `eval:' local variable.
-Add expressions to this list if you want Emacs to evaluate them, when
-they appear in an `eval' local variable specification, without first
-asking you for confirmation."
- :group 'find-file
- :version "22.1"
- :type '(repeat sexp))
-
-(put 'c-set-style 'safe-local-eval-function t)
+ (let ((enable-local-variables
+ (and local-enable-local-variables enable-local-variables))
+ result)
+ (when (or mode-only enable-local-variables)
+ (setq result (hack-local-variables-prop-line mode-only))
+ ;; Look for "Local variables:" line in last page.
+ (save-excursion
+ (goto-char (point-max))
+ (search-backward "\n\^L" (max (- (point-max) 3000) (point-min))
+ 'move)
+ (when (let ((case-fold-search t))
+ (search-forward "Local Variables:" nil t))
+ (skip-chars-forward " \t")
+ ;; suffix is what comes after "local variables:" in its line.
+ ;; prefix is what comes before "local variables:" in its line.
+ (let ((suffix
+ (concat
+ (regexp-quote (buffer-substring (point)
+ (line-end-position)))
+ "$"))
+ (prefix
+ (concat "^" (regexp-quote
+ (buffer-substring (line-beginning-position)
+ (match-beginning 0)))))
+ beg)
+
+ (forward-line 1)
+ (let ((startpos (point))
+ endpos
+ (thisbuf (current-buffer)))
+ (save-excursion
+ (unless (let ((case-fold-search t))
+ (re-search-forward
+ (concat prefix "[ \t]*End:[ \t]*" suffix)
+ nil t))
+ (error "Local variables list is not properly terminated"))
+ (beginning-of-line)
+ (setq endpos (point)))
+
+ (with-temp-buffer
+ (insert-buffer-substring thisbuf startpos endpos)
+ (goto-char (point-min))
+ (subst-char-in-region (point) (point-max) ?\^m ?\n)
+ (while (not (eobp))
+ ;; Discard the prefix.
+ (if (looking-at prefix)
+ (delete-region (point) (match-end 0))
+ (error "Local variables entry is missing the prefix"))
+ (end-of-line)
+ ;; Discard the suffix.
+ (if (looking-back suffix)
+ (delete-region (match-beginning 0) (point))
+ (error "Local variables entry is missing the suffix"))
+ (forward-line 1))
+ (goto-char (point-min))
+
+ (while (not (eobp))
+ ;; Find the variable name; strip whitespace.
+ (skip-chars-forward " \t")
+ (setq beg (point))
+ (skip-chars-forward "^:\n")
+ (if (eolp) (error "Missing colon in local variables entry"))
+ (skip-chars-backward " \t")
+ (let* ((str (buffer-substring beg (point)))
+ (var (read str))
+ val)
+ ;; Read the variable value.
+ (skip-chars-forward "^:")
+ (forward-char 1)
+ (setq val (read (current-buffer)))
+ (if mode-only
+ (if (eq var 'mode)
+ (setq result t))
+ (unless (eq var 'coding)
+ (condition-case nil
+ (push (cons (if (eq var 'eval)
+ 'eval
+ (indirect-variable var))
+ val) result)
+ (error nil)))))
+ (forward-line 1)))))))
+
+ ;; We've read all the local variables. Now, return whether the
+ ;; mode is specified (if MODE-ONLY is non-nil), or set the
+ ;; variables (if MODE-ONLY is nil.)
+ (if mode-only
+ result
+ (dolist (ignored ignored-local-variables)
+ (setq result (assq-delete-all ignored result)))
+ (if (null enable-local-eval)
+ (setq result (assq-delete-all 'eval result)))
+ (when result
+ (setq result (nreverse result))
+ ;; Find those variables that we may want to save to
+ ;; `safe-local-variable-values'.
+ (let (risky-vars unsafe-vars)
+ (dolist (elt result)
+ (let ((var (car elt))
+ (val (cdr elt)))
+ (or (eq var 'mode)
+ (and (eq var 'eval)
+ (or (eq enable-local-eval t)
+ (hack-one-local-variable-eval-safep
+ (eval (quote val)))))
+ (safe-local-variable-p var val)
+ (and (risky-local-variable-p var val)
+ (push elt risky-vars))
+ (push elt unsafe-vars))))
+ (if (eq enable-local-variables :safe)
+ ;; If caller wants only the safe variables,
+ ;; install only them.
+ (dolist (elt result)
+ (unless (or (memq (car elt) unsafe-vars)
+ (memq (car elt) risky-vars))
+ (hack-one-local-variable (car elt) (cdr elt))))
+ ;; Query, except in the case where all are known safe
+ ;; if the user wants no quuery in that case.
+ (if (or (and (eq enable-local-variables t)
+ (null unsafe-vars)
+ (null risky-vars))
+ (eq enable-local-variables :all)
+ (hack-local-variables-confirm
+ result unsafe-vars risky-vars))
+ (dolist (elt result)
+ (hack-one-local-variable (car elt) (cdr elt)))))))
+ (run-hooks 'hack-local-variables-hook)))))
+
+(defun safe-local-variable-p (sym val)
+ "Non-nil if SYM is safe as a file-local variable with value VAL.
+It is safe if any of these conditions are met:
+
+ * There is a matching entry (SYM . VAL) in the
+ `safe-local-variable-values' user option.
+
+ * The `safe-local-variable' property of SYM is a function that
+ evaluates to a non-nil value with VAL as an argument."
+ (or (member (cons sym val) safe-local-variable-values)
+ (let ((safep (get sym 'safe-local-variable)))
+ (and (functionp safep) (funcall safep val)))))
+
+(defun risky-local-variable-p (sym &optional ignored)
+ "Non-nil if SYM could be dangerous as a file-local variable.
+It is dangerous if either of these conditions are met:
+
+ * Its `risky-local-variable' property is non-nil.
+
+ * Its name ends with \"hook(s)\", \"function(s)\", \"form(s)\", \"map\",
+ \"program\", \"command(s)\", \"predicate(s)\", \"frame-alist\",
+ \"mode-alist\", \"font-lock-(syntactic-)keyword*\",
+ \"map-alist\", or \"bindat-spec\"."
+ ;; If this is an alias, check the base name.
+ (condition-case nil
+ (setq sym (indirect-variable sym))
+ (error nil))
+ (or (get sym 'risky-local-variable)
+ (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|\
+-commands?$\\|-predicates?$\\|font-lock-keywords$\\|font-lock-keywords\
+-[0-9]+$\\|font-lock-syntactic-keywords$\\|-frame-alist$\\|-mode-alist$\\|\
+-map$\\|-map-alist$\\|-bindat-spec$" (symbol-name sym))))
(defun hack-one-local-variable-quotep (exp)
(and (consp exp) (eq (car exp) 'quote) (consp (cdr exp))))
(and (eq (car exp) 'put)
(hack-one-local-variable-quotep (nth 1 exp))
(hack-one-local-variable-quotep (nth 2 exp))
- (memq (nth 1 (nth 2 exp))
- '(lisp-indent-hook))
- ;; Only allow safe values of lisp-indent-hook;
- ;; not functions.
- (or (numberp (nth 3 exp))
- (equal (nth 3 exp) ''defun)))
+ (let ((prop (nth 1 (nth 2 exp))) (val (nth 3 exp)))
+ (cond ((eq prop 'lisp-indent-hook)
+ ;; Only allow safe values of lisp-indent-hook;
+ ;; not functions.
+ (or (numberp val) (equal val ''defun)))
+ ((eq prop 'edebug-form-spec)
+ ;; Only allow indirect form specs.
+ ;; During bootstrapping, edebug-basic-spec might not be
+ ;; defined yet.
+ (and (fboundp 'edebug-basic-spec)
+ (edebug-basic-spec val))))))
;; Allow expressions that the user requested.
(member exp safe-local-eval-forms)
;; Certain functions can be allowed with safe arguments
ok)))))))
(defun hack-one-local-variable (var val)
- "\"Set\" one variable in a local variables spec.
-A few patterns are specified so that any name which matches one
-is considered risky."
+ "Set local variable VAR with value VAL."
(cond ((eq var 'mode)
- (funcall (intern (concat (downcase (symbol-name val))
- "-mode"))))
- ((eq var 'coding)
- ;; We have already handled coding: tag in set-auto-coding.
- nil)
- ((memq var ignored-local-variables)
- nil)
- ;; "Setting" eval means either eval it or do nothing.
- ;; Likewise for setting hook variables.
- ((risky-local-variable-p var val)
- ;; Permit evalling a put of a harmless property.
- ;; if the args do nothing tricky.
- (if (or (and (eq var 'eval)
- (hack-one-local-variable-eval-safep val))
- ;; Permit eval if not root and user says ok.
- (and (not (zerop (user-uid)))
- (hack-local-variables-confirm
- "Process `eval' or hook local variables in %s? "
- enable-local-eval)))
- (if (eq var 'eval)
- (save-excursion (eval val))
- (make-local-variable var)
- (set var val))
- (message "Ignoring risky spec in the local variables list")))
- ;; Ordinary variable, really set it.
- (t (make-local-variable var)
- ;; Make sure the string has no text properties.
- ;; Some text properties can get evaluated in various ways,
- ;; so it is risky to put them on with a local variable list.
- (if (stringp val)
- (set-text-properties 0 (length val) nil val))
- (set var val))))
+ (funcall (intern (concat (downcase (symbol-name val)) "-mode"))))
+ ((eq var 'eval)
+ (save-excursion (eval val)))
+ (t
+ ;; Make sure the string has no text properties.
+ ;; Some text properties can get evaluated in various ways,
+ ;; so it is risky to put them on with a local variable list.
+ (if (stringp val)
+ (set-text-properties 0 (length val) nil val))
+ (set (make-local-variable var) val))))
\f
(defcustom change-major-mode-with-file-name t
- "*Non-nil means \\[write-file] should set the major mode from the file name.
+ "Non-nil means \\[write-file] should set the major mode from the file name.
However, the mode will not be changed if
\(1) a local variables list or the `-*-' line specifies a major mode, or
\(2) the current major mode is a \"special\" mode,
(defun set-visited-file-name (filename &optional no-query along-with-file)
"Change name of file visited in current buffer to FILENAME.
+This also renames the buffer to correspond to the new file.
The next time the buffer is saved it will go in the newly specified file.
-FILENAME nil or an empty string means make buffer not be visiting any file.
+FILENAME nil or an empty string means mark buffer as not visiting any file.
Remember to delete the initial contents of the minibuffer
if you wish to pass an empty string as the argument.
(condition-case nil
(delete-file to-name)
(file-error nil))
- (copy-file from-name to-name t t 'excl)
+ (copy-file from-name to-name nil t)
nil)
(file-already-exists t))
;; The file was somehow created by someone else between
(defun file-name-extension (filename &optional period)
"Return FILENAME's final \"extension\".
The extension, in a file name, is the part that follows the last `.',
+excluding version numbers and backup suffixes,
except that a leading `.', if any, doesn't count.
Return nil for extensionless file names such as `foo'.
Return the empty string for file names such as `foo.'.
This function returns a relative file name which is equivalent to FILENAME
when used with that default directory as the default.
If FILENAME and DIRECTORY lie on different machines or on different drives
-on a DOS/Windows machine, it returns FILENAME on expanded form."
+on a DOS/Windows machine, it returns FILENAME in expanded form."
(save-match-data
(setq directory
(file-name-as-directory (expand-file-name (or directory
ancestor))))))
\f
(defun save-buffer (&optional args)
- "Save current buffer in visited file if modified. Variations are described below.
+ "Save current buffer in visited file if modified.
+Variations are described below.
+
By default, makes the previous version into a backup file
if previously requested or if this is the first save.
Prefixed with one \\[universal-argument], marks this version
(set-visited-file-modtime old-modtime)))
;; Since we have created an entirely new file,
;; make sure it gets the right permission bits set.
- (setq setmodes (or setmodes (cons (file-modes buffer-file-name)
- buffer-file-name)))
+ (setq setmodes (or setmodes
+ (cons (or (file-modes buffer-file-name)
+ (logand ?\666 umask))
+ buffer-file-name)))
;; We succeeded in writing the temp file,
;; so rename it.
(rename-file tempname buffer-file-name t))
;; If we get an error writing the new file, and we made
;; the backup by renaming, undo the backing-up.
(and setmodes (not success)
- (rename-file (cdr setmodes) buffer-file-name))))))
+ (progn
+ (rename-file (cdr setmodes) buffer-file-name t)
+ (setq buffer-backed-up nil)))))))
setmodes))
(defun diff-buffer-with-file (&optional buffer)
(recursive-edit)
;; Return nil to ask about BUF again.
nil)
- "view this file")
- (?d diff-buffer-with-file
- "view changes in file"))
+ "view this buffer")
+ (?d (lambda (buf)
+ (save-window-excursion
+ (diff-buffer-with-file buf))
+ (view-buffer (get-buffer-create "*Diff*")
+ (lambda (ignore) (exit-recursive-edit)))
+ (recursive-edit)
+ nil)
+ "view changes in this buffer"))
"ACTION-ALIST argument used in call to `map-y-or-n-p'.")
-(put 'save-some-buffers-action-alist 'risky-local-variable t)
(defvar buffer-save-without-query nil
"Non-nil means `save-some-buffers' should save this buffer without asking.")
time consuming operations.
For more information on how this variable is used by Auto Revert mode,
-see Info node `(emacs-xtra)Supporting additional buffers'.")
+see Info node `(emacs)Supporting additional buffers'.")
(defvar before-revert-hook nil
"Normal hook for `revert-buffer' to run before reverting.
to nil.
Optional second argument NOCONFIRM means don't ask for confirmation at
-all. (The local variable `revert-without-query', if non-nil, prevents
-confirmation.)
+all. \(The variable `revert-without-query' offers another way to
+revert buffers without querying for confirmation.)
Optional third argument PRESERVE-MODES non-nil means don't alter
the files modes. Normally we reinitialize them using `normal-mode'.
(error "Buffer does not seem to be associated with any file"))
((or noconfirm
(and (not (buffer-modified-p))
- (let ((tail revert-without-query)
- (found nil))
- (while tail
- (if (string-match (car tail) file-name)
- (setq found t))
- (setq tail (cdr tail)))
- found))
+ (catch 'found
+ (dolist (regexp revert-without-query)
+ (when (string-match regexp file-name)
+ (throw 'found t)))))
(yes-or-no-p (format "Revert buffer from file %s? "
file-name)))
(run-hooks 'before-revert-hook)
(and (not auto-save-p)
(not (verify-visited-file-modtime (current-buffer)))
(setq buffer-backed-up nil))
- ;; Get rid of all undo records for this buffer.
- (or (eq buffer-undo-list t)
- (setq buffer-undo-list nil))
;; Effectively copy the after-revert-hook status,
;; since after-find-file will clobber it.
(let ((global-hook (default-value 'after-revert-hook))
- (local-hook-p (local-variable-p 'after-revert-hook))
- (local-hook (and (local-variable-p 'after-revert-hook)
- after-revert-hook)))
- (let (buffer-read-only
- ;; Don't make undo records for the reversion.
- (buffer-undo-list t))
- (if revert-buffer-insert-file-contents-function
- (funcall revert-buffer-insert-file-contents-function
- file-name auto-save-p)
- (if (not (file-exists-p file-name))
- (error (if buffer-file-number
- "File %s no longer exists!"
- "Cannot revert nonexistent file %s")
- file-name))
- ;; Bind buffer-file-name to nil
- ;; so that we don't try to lock the file.
- (let ((buffer-file-name nil))
- (or auto-save-p
- (unlock-buffer)))
- (widen)
- (let ((coding-system-for-read
- ;; Auto-saved file shoule be read by Emacs'
- ;; internal coding.
- (if auto-save-p 'auto-save-coding
- (or coding-system-for-read
- buffer-file-coding-system-explicit))))
- ;; This force after-insert-file-set-coding
- ;; (called from insert-file-contents) to set
- ;; buffer-file-coding-system to a proper value.
- (kill-local-variable 'buffer-file-coding-system)
-
- ;; Note that this preserves point in an intelligent way.
- (if preserve-modes
- (let ((buffer-file-format buffer-file-format))
- (insert-file-contents file-name (not auto-save-p)
- nil nil t))
- (insert-file-contents file-name (not auto-save-p)
- nil nil t)))))
+ (local-hook (when (local-variable-p 'after-revert-hook)
+ after-revert-hook))
+ (inhibit-read-only t))
+ (cond
+ (revert-buffer-insert-file-contents-function
+ (unless (eq buffer-undo-list t)
+ ;; Get rid of all undo records for this buffer.
+ (setq buffer-undo-list nil))
+ ;; Don't make undo records for the reversion.
+ (let ((buffer-undo-list t))
+ (funcall revert-buffer-insert-file-contents-function
+ file-name auto-save-p)))
+ ((not (file-exists-p file-name))
+ (error (if buffer-file-number
+ "File %s no longer exists!"
+ "Cannot revert nonexistent file %s")
+ file-name))
+ (t
+ ;; Bind buffer-file-name to nil
+ ;; so that we don't try to lock the file.
+ (let ((buffer-file-name nil))
+ (or auto-save-p
+ (unlock-buffer)))
+ (widen)
+ (let ((coding-system-for-read
+ ;; Auto-saved file should be read by Emacs'
+ ;; internal coding.
+ (if auto-save-p 'auto-save-coding
+ (or coding-system-for-read
+ buffer-file-coding-system-explicit))))
+ (if (and (not enable-multibyte-characters)
+ coding-system-for-read
+ (not (memq (coding-system-base
+ coding-system-for-read)
+ '(no-conversion raw-text))))
+ ;; As a coding system suitable for multibyte
+ ;; buffer is specified, make the current
+ ;; buffer multibyte.
+ (set-buffer-multibyte t))
+
+ ;; This force after-insert-file-set-coding
+ ;; (called from insert-file-contents) to set
+ ;; buffer-file-coding-system to a proper value.
+ (kill-local-variable 'buffer-file-coding-system)
+
+ ;; Note that this preserves point in an intelligent way.
+ (if preserve-modes
+ (let ((buffer-file-format buffer-file-format))
+ (insert-file-contents file-name (not auto-save-p)
+ nil nil t))
+ (insert-file-contents file-name (not auto-save-p)
+ nil nil t)))))
;; Recompute the truename in case changes in symlinks
;; have changed the truename.
(setq buffer-file-truename
(after-find-file nil nil t t preserve-modes)
;; Run after-revert-hook as it was before we reverted.
(setq-default revert-buffer-internal-hook global-hook)
- (if local-hook-p
+ (if local-hook
(set (make-local-variable 'revert-buffer-internal-hook)
local-hook)
(kill-local-variable 'revert-buffer-internal-hook))
(insert-directory-safely file-name switches))))
(yes-or-no-p (format "Recover auto save file %s? " file-name)))
(switch-to-buffer (find-file-noselect file t))
- (let ((buffer-read-only nil)
+ (let ((inhibit-read-only t)
;; Keep the current buffer-file-coding-system.
(coding-system buffer-file-coding-system)
- ;; Auto-saved file shoule be read with special coding.
+ ;; Auto-saved file should be read with special coding.
(coding-system-for-read 'auto-save-coding))
(erase-buffer)
(insert-file-contents file-name nil)
(setq autofile
(buffer-substring-no-properties
(point)
- (save-excursion
- (end-of-line)
- (point))))
+ (line-end-position)))
(setq thisfile
(expand-file-name
(substring
"#")))
;; Make sure auto-save file names don't contain characters
;; invalid for the underlying filesystem.
- (if (and (memq system-type '(ms-dos windows-nt))
+ (if (and (memq system-type '(ms-dos windows-nt cygwin))
;; Don't modify remote (ange-ftp) filenames
(not (string-match "^/\\w+@[-A-Za-z0-9._]+:" result)))
(convert-standard-filename result)
((file-writable-p default-directory) default-directory)
((file-writable-p "/var/tmp/") "/var/tmp/")
("~/")))))
- (if (and (memq system-type '(ms-dos windows-nt))
+ (if (and (memq system-type '(ms-dos windows-nt cygwin))
;; Don't modify remote (ange-ftp) filenames
(not (string-match "^/\\w+@[-A-Za-z0-9._]+:" fname)))
;; The call to convert-standard-filename is in case
\f
(defcustom list-directory-brief-switches
(if (eq system-type 'vax-vms) "" "-CF")
- "*Switches for `list-directory' to pass to `ls' for brief listing."
+ "Switches for `list-directory' to pass to `ls' for brief listing."
:type 'string
:group 'dired)
(if (eq system-type 'vax-vms)
"/PROTECTION/SIZE/DATE/OWNER/WIDTH=(OWNER:10)"
"-l")
- "*Switches for `list-directory' to pass to `ls' for verbose listing."
+ "Switches for `list-directory' to pass to `ls' for verbose listing."
:type 'string
:group 'dired)
"Absolute or relative name of the `ls' program used by `insert-directory'.")
(defcustom directory-free-space-program "df"
- "*Program to get the amount of free space on a file system.
+ "Program to get the amount of free space on a file system.
We assume the output has the format of `df'.
The value of this variable must be just a command name or file name;
if you want to specify options, use `directory-free-space-args'.
(defcustom directory-free-space-args
(if (eq system-type 'darwin) "-k" "-Pk")
- "*Options to use when running `directory-free-space-program'."
+ "Options to use when running `directory-free-space-program'."
:type 'string
:group 'dired)
(define-key ctl-x-5-map "f" 'find-file-other-frame)
(define-key ctl-x-5-map "\C-f" 'find-file-other-frame)
(define-key ctl-x-5-map "r" 'find-file-read-only-other-frame)
+(define-key ctl-x-5-map "\C-o" 'display-buffer-other-frame)
;; arch-tag: bc68d3ea-19ca-468b-aac6-3a4a7766101f
;;; files.el ends here