;; Copyright (C) 1985, 1986, 1987, 1992, 1993, 1994, 1995, 1996,
;; 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-;; 2006 Free Software Foundation, Inc.
+;; 2006, 2007 Free Software Foundation, Inc.
;; Maintainer: FSF
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
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)
+(put 'find-file-visit-truename 'safe-local-variable 'booleanp)
(defcustom revert-without-query nil
"Specify which files should be reverted without query.
(defcustom version-control nil
"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."
+When t, make numeric backup versions unconditionally.
+When nil, make them for files that have some already.
+The value `never' means do not make them."
:type '(choice (const :tag "Never" never)
(const :tag "If existing" nil)
(other :tag "Always" t))
A value of `visit' means do this right after the file is visited.
A value of `visit-save' means do it at both of those times.
Any other non-nil value means ask user whether to add a newline, when saving.
-nil means don't add newlines.
+A value of nil means don't add newlines.
Certain major modes set this locally to the value obtained
from `mode-require-final-newline'."
A value of `visit-save' means do it at both of those times.
Any other non-nil value means ask user whether to add a newline, when saving.
-nil means do not add newlines. That is a risky choice in this variable
-since this value is used for modes for files that ought to have final newlines.
-So if you set this to nil, you must explicitly check and add
-a final newline, whenever you save a file that really needs one."
+A value of nil means do not add newlines. That is a risky choice in this
+variable since this value is used for modes for files that ought to have
+final newlines. So if you set this to nil, you must explicitly check and
+add a final newline, whenever you save a file that really needs one."
:type '(choice (const :tag "When visiting" visit)
(const :tag "When saving" t)
(const :tag "When visiting or saving" visit-save)
: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.
+A value of 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
"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."
+A value of nil means ignore them; anything else means query."
:type '(choice (const :tag "Obey" t)
(const :tag "Ignore" nil)
(other :tag "Query" other))
(unless (run-hook-with-args-until-failure 'kill-buffer-query-functions)
(error "Aborted"))
(when (and (buffer-modified-p) (buffer-file-name))
- (if (yes-or-no-p (format "Buffer %s is modified; save it first? "
+ (if (yes-or-no-p (format "Buffer %s is modified; kill anyway? "
(buffer-name)))
- (save-buffer)
- (unless (yes-or-no-p "Kill and replace the buffer without saving it? ")
- (error "Aborted"))))
+ (unless (yes-or-no-p "Kill and replace the buffer without saving it? ")
+ (error "Aborted"))
+ (save-buffer)))
(let ((obuf (current-buffer))
(ofile buffer-file-name)
(onum buffer-file-number)
(defun abbreviate-file-name (filename)
"Return a version of FILENAME shortened using `directory-abbrev-alist'.
-This also substitutes \"~\" for the user's home directory and
-removes automounter prefixes (see the variable `automount-dir-prefix')."
+This also substitutes \"~\" for the user's home directory (unless the
+home directory is a root directory) and removes automounter prefixes
+\(see the variable `automount-dir-prefix')."
;; Get rid of the prefixes added by the automounter.
(save-match-data
(if (and automount-dir-prefix
(error "Aborted"))
(if buf
;; We are using an existing buffer.
- (progn
+ (let (nonexistent)
(or nowarn
(verify-visited-file-modtime buf)
(cond ((not (file-exists-p filename))
- (error "File %s no longer exists!" filename))
+ (setq nonexistent t)
+ (message "File %s no longer exists!" filename))
;; Certain files should be reverted automatically
;; if they have changed on disk and not in the buffer.
((and (not (buffer-modified-p buf))
;; writable and vice versa, but if the buffer agrees
;; with the new state of the file, that is ok too.
(let ((read-only (not (file-writable-p buffer-file-name))))
- (unless (or (eq read-only buffer-file-read-only)
+ (unless (or nonexistent
+ (eq read-only buffer-file-read-only)
(eq read-only buffer-read-only))
(when (or nowarn
(let ((question
(when (and (not (eq (not (null rawfile))
(not (null find-file-literally))))
+ (not nonexistent)
;; It is confusing to ask whether to visit
;; non-literally if they have the file in
;; hexl-mode.
(setq default-directory (file-name-directory buffer-file-name))
;; Turn off backup files for certain file names. Since
;; this is a permanent local, the major mode won't eliminate it.
- (and (not (funcall backup-enable-predicate buffer-file-name))
+ (and backup-enable-predicate
+ (not (funcall backup-enable-predicate buffer-file-name))
(progn
(make-local-variable 'backup-inhibited)
(setq backup-inhibited t)))
(if (file-directory-p filename)
(signal 'file-error (list "Opening input file" "file is a directory"
filename)))
- ;; Check whether the file is uncommonly large (see find-file-noselect):
- (let (size)
- (when (and large-file-warning-threshold
- (setq size (nth 7 (file-attributes filename)))
- (> size large-file-warning-threshold)
- (not (y-or-n-p
- (format "File %s is large (%dMB), really insert? "
- (file-name-nondirectory filename)
- (/ size 1048576)))))
- (error "Aborted")))
(let* ((buffer (find-buffer-visiting (abbreviate-file-name (file-truename filename))
#'buffer-modified-p))
(tem (funcall insert-func filename)))
(if (fboundp 'ucs-set-table-for-input) ; don't lose when building
(ucs-set-table-for-input)))
+(defcustom auto-mode-case-fold nil
+ "Non-nil means to try second pass through `auto-mode-alist'.
+This means that if the first case-sensitive search through the alist fails
+to find a matching major mode, a second case-insensitive search is made.
+On systems with case-insensitive file names, this variable is ignored,
+since only a single case-insensitive search through the alist is made."
+ :group 'files
+ :version "22.1"
+ :type 'boolean)
+
(defvar auto-mode-alist
;; Note: The entries for the modes defined in cc-mode.el (c-mode,
;; c++-mode, java-mode and more) are added through autoload
("[:/]_emacs\\'" . emacs-lisp-mode)
("/crontab\\.X*[0-9]+\\'" . shell-script-mode)
("\\.ml\\'" . lisp-mode)
+ ;; Common Lisp ASDF package system.
+ ("\\.asd\\'" . lisp-mode)
("\\.\\(asn\\|mib\\|smi\\)\\'" . snmp-mode)
("\\.\\(as\\|mi\\|sm\\)2\\'" . snmpv2-mode)
("\\.\\(diffs?\\|patch\\|rej\\)\\'" . diff-mode)
("[/.]c\\(?:on\\)?f\\(?:i?g\\)?\\(?:\\.[a-zA-Z0-9._-]+\\)?\\'" . conf-mode)
("\\`/etc/\\(?:DIR_COLORS\\|ethers\\|.?fstab\\|.*hosts\\|lesskey\\|login\\.?de\\(?:fs\\|vperm\\)\\|magic\\|mtab\\|pam\\.d/.*\\|permissions\\(?:\\.d/.+\\)?\\|protocols\\|rpc\\|services\\)\\'" . conf-space-mode)
("\\`/etc/\\(?:acpid?/.+\\|aliases\\(?:\\.d/.+\\)?\\|default/.+\\|group-?\\|hosts\\..+\\|inittab\\|ksysguarddrc\\|opera6rc\\|passwd-?\\|shadow-?\\|sysconfig/.+\\)\\'" . conf-mode)
+ ;; ChangeLog.old etc. Other change-log-mode entries are above;
+ ;; this has lower priority to avoid matching changelog.sgml etc.
+ ("[cC]hange[lL]og[-.][-0-9a-z]+\\'" . change-log-mode)
;; either user's dot-files or under /etc or some such
("/\\.?\\(?:gnokiirc\\|kde.*rc\\|mime\\.types\\|wgetrc\\)\\'" . conf-mode)
;; alas not all ~/.*rc files are like this
of the regular expression. The mode is then determined as the mode
associated with that interpreter in `interpreter-mode-alist'.")
-(defvar magic-mode-alist
+(defvar magic-mode-alist nil
+ "Alist of buffer beginnings vs. corresponding major mode functions.
+Each element looks like (REGEXP . FUNCTION) or (MATCH-FUNCTION . FUNCTION).
+After visiting a file, if REGEXP matches the text at the beginning of the
+buffer, or calling MATCH-FUNCTION returns non-nil, `normal-mode' will
+call FUNCTION rather than allowing `auto-mode-alist' to decide the buffer's
+major 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.\")")
+(put 'magic-mode-alist 'risky-local-variable t)
+
+(defvar magic-fallback-mode-alist
`((image-type-auto-detected-p . image-mode)
;; 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.
+ ;; We use [ \t\r\n] instead of `\\s ' to make regex overflow less likely.
(,(let* ((incomment-re "\\(?:[^-]\\|-[^-]\\)")
- (comment-re (concat "\\(?:!--" incomment-re "*-->[ \t\n]*<\\)")))
- (concat "\\(?:<\\?xml[ \t\n]+[^>]*>\\)?[ \t\n]*<"
+ (comment-re (concat "\\(?:!--" incomment-re "*-->[ \t\r\n]*<\\)")))
+ (concat "\\(?:<\\?xml[ \t\r\n]+[^>]*>\\)?[ \t\r\n]*<"
comment-re "*"
- "\\(?:!DOCTYPE[ \t\n]+[^>]*>[ \t\n]*<[ \t\n]*" comment-re "*\\)?"
+ "\\(?:!DOCTYPE[ \t\r\n]+[^>]*>[ \t\r\n]*<[ \t\r\n]*" comment-re "*\\)?"
"[Hh][Tt][Mm][Ll]"))
. html-mode)
+ ("<!DOCTYPE[ \t\r\n]+[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 "*-->[ \t\n]*<\\)")))
- (concat "[ \t\n]*<" comment-re "*!DOCTYPE "))
+ (comment-re (concat "\\(?:!--" incomment-re "*-->[ \t\r\n]*<\\)")))
+ (concat "[ \t\r\n]*<" comment-re "*!DOCTYPE "))
. sgml-mode)
- ("%![^V]" . ps-mode)
+ ("%!PS" . ps-mode)
("# xmcd " . conf-unix-mode))
- "Alist of buffer beginnings vs. corresponding major mode functions.
+ "Like `magic-mode-alist' but has lower priority than `auto-mode-alist'.
Each element looks like (REGEXP . FUNCTION) or (MATCH-FUNCTION . FUNCTION).
After visiting a file, if REGEXP matches the text at the beginning of the
buffer, or calling MATCH-FUNCTION returns non-nil, `normal-mode' will
-call FUNCTION rather than allowing `auto-mode-alist' to decide the buffer's
-major mode.
+call FUNCTION, provided that `magic-mode-alist' and `auto-mode-alist'
+have not specified a mode for this file.
-If FUNCTION is nil, then it is not called. (That is a way of saying
-\"allow `auto-mode-alist' to decide for these files.\")")
-(put 'magic-mode-alist 'risky-local-variable t)
+If FUNCTION is nil, then it is not called.")
+(put 'magic-fallback-mode-alist 'risky-local-variable t)
(defvar magic-mode-regexp-match-limit 4000
- "Upper limit on `magic-mode-alist' regexp matches.")
+ "Upper limit on `magic-mode-alist' regexp matches.
+Also applies to `magic-fallback-mode-alist'.")
(defun set-auto-mode (&optional keep-mode-if-same)
"Select major mode appropriate for current buffer.
-This checks for a -*- mode tag in the buffer's text, checks the
-interpreter that runs this file against `interpreter-mode-alist',
-compares the buffer beginning against `magic-mode-alist', or
-compares the filename against the entries in `auto-mode-alist'.
+To find the right major mode, this function checks for a -*- mode tag,
+checks if it uses an interpreter listed in `interpreter-mode-alist',
+matches the buffer beginning against `magic-mode-alist',
+compares the filename against the entries in `auto-mode-alist',
+then matches the buffer beginning against `magic-fallback-mode-alist'.
It does not check for the `mode:' local variable in the
Local Variables section of the file; for that, use `hack-local-variables'.
-*- mode tag.
If the optional argument KEEP-MODE-IF-SAME is non-nil, then we
-only set the major mode, if that would change it."
+set the major mode only if that would change it. In other words
+we don't actually set it to the same mode the buffer already has."
;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*-
(let (end done mode modes)
;; Find a -*- mode tag
(or (set-auto-mode-0 mode keep-mode-if-same)
;; continuing would call minor modes again, toggling them off
(throw 'nop nil))))))
+ ;; 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 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.
(setq mode (save-excursion
(goto-char (point-min))
(if (looking-at auto-mode-interpreter-regexp)
;; If we found an interpreter mode to use, invoke it now.
(if done
(set-auto-mode-0 (cdr done) keep-mode-if-same)))
- ;; If we didn't, match the buffer beginning against magic-mode-alist.
+ ;; Next try matching the buffer beginning against magic-mode-alist.
(unless done
(if (setq done (save-excursion
(goto-char (point-min))
(if (functionp re)
(funcall re)
(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
- (let ((name buffer-file-name))
- ;; Remove backup-suffixes from file name.
- (setq name (file-name-sans-versions name))
- (while name
- ;; Find first matching alist entry.
- (let ((case-fold-search
- (memq system-type '(vax-vms windows-nt cygwin))))
- (if (and (setq mode (assoc-default name auto-mode-alist
- 'string-match))
- (consp mode)
- (cadr mode))
- (setq mode (car mode)
- name (substring name 0 (match-beginning 0)))
- (setq name)))
- (when mode
- (set-auto-mode-0 mode keep-mode-if-same)))))))))
+ (set-auto-mode-0 done keep-mode-if-same)))
+ ;; Next compare the filename against the entries in auto-mode-alist.
+ (unless done
+ (if buffer-file-name
+ (let ((name buffer-file-name)
+ (remote-id (file-remote-p buffer-file-name)))
+ ;; Remove remote file name identification.
+ (when (and (stringp remote-id)
+ (string-match (regexp-quote remote-id) name))
+ (setq name (substring name (match-end 0))))
+ ;; Remove backup-suffixes from file name.
+ (setq name (file-name-sans-versions name))
+ (while name
+ ;; Find first matching alist entry.
+ (setq mode
+ (if (memq system-type '(vax-vms windows-nt cygwin))
+ ;; System is case-insensitive.
+ (let ((case-fold-search t))
+ (assoc-default name auto-mode-alist
+ 'string-match))
+ ;; System is case-sensitive.
+ (or
+ ;; First match case-sensitively.
+ (let ((case-fold-search nil))
+ (assoc-default name auto-mode-alist
+ 'string-match))
+ ;; Fallback to case-insensitive match.
+ (and auto-mode-case-fold
+ (let ((case-fold-search t))
+ (assoc-default name auto-mode-alist
+ 'string-match))))))
+ (if (and mode
+ (consp mode)
+ (cadr mode))
+ (setq mode (car mode)
+ name (substring name 0 (match-beginning 0)))
+ (setq name))
+ (when mode
+ (set-auto-mode-0 mode keep-mode-if-same)
+ (setq done t))))))
+ ;; Next try matching the buffer beginning against magic-fallback-mode-alist.
+ (unless done
+ (if (setq done (save-excursion
+ (goto-char (point-min))
+ (save-restriction
+ (narrow-to-region (point-min)
+ (min (point-max)
+ (+ (point-min) magic-mode-regexp-match-limit)))
+ (assoc-default nil magic-fallback-mode-alist
+ (lambda (re dummy)
+ (if (functionp re)
+ (funcall re)
+ (looking-at re)))))))
+ (set-auto-mode-0 done keep-mode-if-same)))))
;; When `keep-mode-if-same' is set, we are working on behalf of
;; set-visited-file-name. In that case, if the major mode specified is the
If optional arg KEEP-MODE-IF-SAME is non-nil, MODE is chased of
any aliases and compared to current major mode. If they are the
same, do nothing and return nil."
- (when keep-mode-if-same
- (while (symbolp (symbol-function mode))
- (setq mode (symbol-function mode)))
- (if (eq mode major-mode)
- (setq mode nil)))
- (when mode
- (funcall mode)
- mode))
+ (unless (and keep-mode-if-same
+ (eq (indirect-function mode)
+ (indirect-function major-mode)))
+ (when mode
+ (funcall mode)
+ mode)))
(defun set-auto-mode-1 ()
"Find the -*- spec in the buffer.
(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
+ '((buffer-read-only . booleanp) ;; C source code
+ (default-directory . stringp) ;; 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)
", or C-v to scroll")))
(goto-char (point-min))
(let ((cursor-in-echo-area t)
+ (executing-kbd-macro executing-kbd-macro)
(exit-chars
(if offer-save '(?! ?y ?n ?\s ?\C-g) '(?y ?n ?\s ?\C-g)))
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))))))
+ (cond ((eq char ?\C-v)
+ (condition-case nil
+ (scroll-up)
+ (error (goto-char (point-min)))))
+ ;; read-event returns -1 if we are in a kbd
+ ;; macro and there are no more events in the
+ ;; macro. In that case, attempt to get an
+ ;; event interactively.
+ ((and executing-kbd-macro (= char -1))
+ (setq executing-kbd-macro nil))
+ (t (setq done (memq (downcase char) exit-chars)))))))
(setq char (downcase char))
(when (and offer-save (= char ?!) unsafe-vars)
(dolist (elt unsafe-vars)
;; During bootstrapping, edebug-basic-spec might not be
;; defined yet.
(and (fboundp 'edebug-basic-spec)
- (edebug-basic-spec val))))))
+ (hack-one-local-variable-quotep val)
+ (edebug-basic-spec (nth 1 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 local variable VAR with value VAL."
+ "Set local variable VAR with value VAL.
+If VAR is `mode', call `VAL-mode' as a function unless it's
+already the major mode."
(cond ((eq var 'mode)
- (funcall (intern (concat (downcase (symbol-name val)) "-mode"))))
+ (let ((mode (intern (concat (downcase (symbol-name val))
+ "-mode"))))
+ (unless (eq (indirect-function mode)
+ (indirect-function major-mode))
+ (funcall mode))))
((eq var 'eval)
(save-excursion (eval val)))
(t
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,
-\ not suitable for ordinary files, or
+\ not suitable for ordinary files, or
\(3) the new file name does not particularly specify any mode."
:type 'boolean
:group 'editing-basics)
;; Turn off backup files for certain file names.
;; Since this is a permanent local, the major mode won't eliminate it.
(and buffer-file-name
+ backup-enable-predicate
(not (funcall backup-enable-predicate buffer-file-name))
(progn
(make-local-variable 'backup-inhibited)
(convert-standard-filename
"~/%backup%~")))
(message "Cannot write backup file; backing up in %s"
- (file-name-nondirectory backupname))
+ backupname)
(sleep-for 1)
(backup-buffer-copy real-file-name backupname modes)))
(setq buffer-backed-up t)
(defun make-backup-file-name-1 (file)
"Subroutine of `make-backup-file-name' and `find-backup-file-name'."
(let ((alist backup-directory-alist)
- elt backup-directory)
+ elt backup-directory abs-backup-directory)
(while alist
(setq elt (pop alist))
(if (string-match (car elt) file)
;; file's directory. By expanding explicitly here, we avoid
;; depending on default-directory.
(if backup-directory
- (setq backup-directory (expand-file-name backup-directory
- (file-name-directory file))))
- (if (and backup-directory (not (file-exists-p backup-directory)))
+ (setq abs-backup-directory
+ (expand-file-name backup-directory
+ (file-name-directory file))))
+ (if (and abs-backup-directory (not (file-exists-p abs-backup-directory)))
(condition-case nil
- (make-directory backup-directory 'parents)
- (file-error (setq backup-directory nil))))
+ (make-directory abs-backup-directory 'parents)
+ (file-error (setq backup-directory nil
+ abs-backup-directory nil))))
(if (null backup-directory)
file
(if (file-name-absolute-p backup-directory)
(replace-regexp-in-string "!" "!!" file))
backup-directory))
(expand-file-name (file-name-nondirectory file)
- (file-name-as-directory
- (expand-file-name backup-directory
- (file-name-directory file))))))))
+ (file-name-as-directory abs-backup-directory))))))
(defun backup-file-name-p (file)
"Return non-nil if FILE is a backup file name (numeric or not).
(let ((filename
(expand-file-name
(read-file-name "File to save in: ") nil)))
- (and (file-exists-p filename)
- (or (y-or-n-p (format "File `%s' exists; overwrite? "
- filename))
- (error "Canceled")))
+ (if (file-exists-p filename)
+ (if (file-directory-p filename)
+ ;; Signal an error if the user specified the name of an
+ ;; existing directory.
+ (error "%s is a directory" filename)
+ (unless (y-or-n-p (format "File `%s' exists; overwrite? "
+ filename))
+ (error "Canceled")))
+ ;; Signal an error if the specified name refers to a
+ ;; non-existing directory.
+ (let ((dir (file-name-directory filename)))
+ (unless (file-directory-p dir)
+ (if (file-exists-p dir)
+ (error "%s is not a directory" dir)
+ (error "%s: no such directory" dir)))))
(set-visited-file-name filename)))
(or (verify-visited-file-modtime (current-buffer))
(not (file-exists-p buffer-file-name))
(if (not (file-directory-p dir))
(if (file-exists-p dir)
(error "%s is not a directory" dir)
- (error "%s: no such directory" buffer-file-name))
+ (error "%s: no such directory" dir))
(if (not (file-exists-p buffer-file-name))
(error "Directory %s write-protected" dir)
(if (yes-or-no-p
(defun toggle-read-only (&optional arg)
"Change whether this buffer is visiting its file read-only.
-With arg, set read-only iff arg is positive.
-If visiting file read-only and `view-read-only' is non-nil, enter view mode."
+With prefix argument ARG, make the buffer read-only if ARG is
+positive, otherwise make it writable. If visiting file read-only
+and `view-read-only' is non-nil, enter view mode."
(interactive "P")
(if (and arg
(if (> (prefix-numeric-value arg) 0) buffer-read-only
\f
(defun wildcard-to-regexp (wildcard)
"Given a shell file name pattern WILDCARD, return an equivalent regexp.
-The generated regexp will match a filename iff the filename
+The generated regexp will match a filename only if the filename
matches that wildcard according to shell rules. Only wildcards known
by `sh' are supported."
(let* ((i (string-match "[[.*+\\^$?]" wildcard))
"Return the amount of free space on directory DIR's file system.
The result is a string that gives the number of free 1KB blocks,
or nil if the system call or the program which retrieve the information
-fail.
+fail. It returns also nil when DIR is a remote directory.
This function calls `file-system-info' if it is available, or invokes the
program specified by `directory-free-space-program' if that is non-nil."
- ;; Try to find the number of free blocks. Non-Posix systems don't
- ;; always have df, but might have an equivalent system call.
- (if (fboundp 'file-system-info)
- (let ((fsinfo (file-system-info dir)))
- (if fsinfo
- (format "%.0f" (/ (nth 2 fsinfo) 1024))))
- (save-match-data
- (with-temp-buffer
- (when (and directory-free-space-program
- (eq 0 (call-process directory-free-space-program
- nil t nil
- directory-free-space-args
- dir)))
- ;; Usual format is a header line followed by a line of
- ;; numbers.
- (goto-char (point-min))
- (forward-line 1)
- (if (not (eobp))
- (progn
- ;; Move to the end of the "available blocks" number.
- (skip-chars-forward "^ \t")
- (forward-word 3)
- ;; Copy it into AVAILABLE.
- (let ((end (point)))
- (forward-word -1)
- (buffer-substring (point) end)))))))))
+ (when (not (file-remote-p dir))
+ ;; Try to find the number of free blocks. Non-Posix systems don't
+ ;; always have df, but might have an equivalent system call.
+ (if (fboundp 'file-system-info)
+ (let ((fsinfo (file-system-info dir)))
+ (if fsinfo
+ (format "%.0f" (/ (nth 2 fsinfo) 1024))))
+ (save-match-data
+ (with-temp-buffer
+ (when (and directory-free-space-program
+ (eq 0 (call-process directory-free-space-program
+ nil t nil
+ directory-free-space-args
+ dir)))
+ ;; Usual format is a header line followed by a line of
+ ;; numbers.
+ (goto-char (point-min))
+ (forward-line 1)
+ (if (not (eobp))
+ (progn
+ ;; Move to the end of the "available blocks" number.
+ (skip-chars-forward "^ \t")
+ (forward-word 3)
+ ;; Copy it into AVAILABLE.
+ (let ((end (point)))
+ (forward-word -1)
+ (buffer-substring (point) end))))))))))
;; The following expression replaces `dired-move-to-filename-regexp'.
(defvar directory-listing-before-filename-regexp
HCoop / bpt / emacs.git / blobdiff