;;; files.el --- file input and output commands for Emacs
;; Copyright (C) 1985, 86, 87, 92, 93,
-;; 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
+;; 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
;; Maintainer: FSF
The file's owner and group are unchanged.
The choice of renaming or copying is controlled by the variables
-`backup-by-copying', `backup-by-copying-when-linked' and
-`backup-by-copying-when-mismatch'. See also `backup-inhibited'."
+`backup-by-copying', `backup-by-copying-when-linked',
+`backup-by-copying-when-mismatch' and
+`backup-by-copying-when-privileged-mismatch'. See also `backup-inhibited'."
:type 'boolean
:group 'backup)
:type 'boolean
:group 'backup)
+(defcustom backup-by-copying-when-privileged-mismatch 200
+ "*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
+when low-numbered uid's are used for special system users (such as root)
+that must maintain ownership of certain files.
+This variable is relevant only if `backup-by-copying' and
+`backup-by-copying-when-mismatch' are nil."
+ :type '(choice (const nil) integer)
+ :group 'backup)
+
(defvar backup-enable-predicate
- '(lambda (name)
- (or (< (length name) 5)
- (not (string-equal "/tmp/" (substring name 0 5)))))
+ (lambda (name)
+ (not (or (let ((comp (compare-strings temporary-file-directory 0 nil
+ name 0 nil)))
+ ;; Directory is under temporary-file-directory.
+ (and (not (eq comp t))
+ (< comp -1)))
+ (if small-temporary-file-directory
+ (let ((comp (compare-strings small-temporary-file-directory
+ 0 nil
+ name 0 nil)))
+ ;; Directory is under small-temporary-file-directory.
+ (and (not (eq comp t))
+ (< comp -1)))))))
"Predicate that looks at a file name and decides whether to make backups.
-Called with an absolute file name as argument, it returns t to enable backup.")
+Called with an absolute file name as argument, it returns t to enable backup.
+The default version checks for files in `temporary-file-directory' or
+`small-temporary-file-directory'.")
(defcustom buffer-offer-save nil
- "*Non-nil in a buffer means offer to save the buffer on exit
-even if the buffer is not visiting a file.
+ "*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
:group 'backup)
:type 'boolean
:group 'auto-save)
+(defcustom auto-save-file-name-transforms
+ '(("\\`/[^/]*:\\(.+/\\)*\\(.*\\)" "/tmp/\\2"))
+ "*Transforms to apply to buffer file name before making auto-save file name.
+Each transform is a list (REGEXP REPLACEMENT):
+REGEXP is a regular expression to match against the file name.
+If it matches, `replace-match' is used to replace the
+matching part with REPLACEMENT.
+All the transforms in the list are tried, in the order they are listed.
+When one transform applies, its result is final;
+no further transforms are tried.
+
+The default value is set up to put the auto-save file into `/tmp'
+for editing a remote file."
+ :group 'auto-save
+ :type '(repeat (list (string :tag "Regexp") (string :tag "Replacement")))
+ :version "21.1")
+
(defcustom save-abbrevs nil
"*Non-nil means save word abbrevs too when files are saved.
Loading an abbrev file sets this to t."
:group 'abbrev)
(defcustom find-file-run-dired t
- "*Non-nil says run dired if `find-file' is given the name of a directory."
+ "*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.
+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))
+ :group 'find-file)
+
;;;It is not useful to make this a local variable.
;;;(put 'find-file-not-found-hooks 'permanent-local t)
(defvar find-file-not-found-hooks nil
"List of functions to be called for `find-file' on nonexistent file.
These functions are called as soon as the error is detected.
-`buffer-file-name' is already set up.
+Variable `buffer-file-name' is already set up.
The functions are called in the order given until one of them returns non-nil.")
;;;It is not useful to make this a local variable.
If one of them returns non-nil, the file is considered already written
and the rest are not called.
These hooks are considered to pertain to the visited file.
-So this list is cleared if you change the visited file name.
+So any buffer-local binding of `write-file-hooks' is
+discarded if you change the visited file name with \\[set-visited-file-name].
Don't make this variable buffer-local; instead, use `local-write-file-hooks'.
See also `write-contents-hooks'.")
"The directory for writing temporary files.")
(defvar small-temporary-file-directory
- (if (eq system-type 'ms-dos) (getenv "TMPDIR") temporary-file-directory)
+ (if (eq system-type 'ms-dos) (getenv "TMPDIR"))
"The directory for writing small temporary files.
-This is for systems that have fast storage with limited space,
-such as a RAM disk.")
+If non-nil, this directory is used instead of `temporary-file-directory'
+by programs that create small temporary files. This is for systems that
+have fast storage with limited space, such as a RAM disk.")
;; The system null device. (Should reference NULL_DEVICE from C.)
(defvar null-device "/dev/null" "The system null device.")
-;; This hook function provides support for ange-ftp host name
-;; completion. It runs the usual ange-ftp hook, but only for
-;; completion operations. Having this here avoids the need
-;; to load ange-ftp when it's not really in use.
(defun ange-ftp-completion-hook-function (op &rest args)
+ "Provides support for ange-ftp host name completion.
+Runs the usual ange-ftp hook, but only for completion operations."
+ ;; Having this here avoids the need to load ange-ftp when it's not
+ ;; really in use.
(if (memq op '(file-name-completion file-name-all-completions))
(apply 'ange-ftp-hook-function op args)
(let ((inhibit-file-name-handlers
(defun load-file (file)
"Load the Lisp file named FILE."
(interactive "fLoad file: ")
- (load (expand-file-name file) nil nil t))
+ (let ((completion-ignored-extensions
+ (delete ".elc" completion-ignored-extensions)))
+ (load (expand-file-name file) nil nil t)))
(defun load-library (library)
"Load the library named LIBRARY.
(interactive "sLoad library: ")
(load library))
-(defun file-local-copy (file &optional buffer)
+(defun file-local-copy (file)
"Copy the file FILE into a temporary file on this machine.
Returns the name of the local copy, or nil, if FILE is directly
accessible."
+ ;; This formerly had an optional BUFFER argument that wasn't used by
+ ;; anything.
(let ((handler (find-file-name-handler file 'file-local-copy)))
(if handler
(funcall handler 'file-local-copy file)
(if handler
(setq filename (funcall handler 'file-truename filename))
;; If filename contains a wildcard, newname will be the old name.
- (if (string-match "[*?]" filename)
+ (if (string-match "[[*?]" filename)
(setq newname filename)
;; If filename doesn't exist, newname will be nil.
(setq newname (w32-long-file-name filename)))
(defun find-file-read-only (filename &optional wildcards)
"Edit file FILENAME but don't allow changes.
-Like \\[find-file] but marks buffer as read-only.
+Like `find-file' but marks buffer as read-only.
Use \\[toggle-read-only] to permit editing."
(interactive "fFind file read-only: \np")
(find-file filename wildcards)
Choose the buffer's name using `generate-new-buffer-name'."
(get-buffer-create (generate-new-buffer-name name)))
-(defvar automount-dir-prefix "^/tmp_mnt/"
- "Regexp to match the automounter prefix in a directory name.")
+(defcustom automount-dir-prefix "^/tmp_mnt/"
+ "Regexp to match the automounter prefix in a directory name."
+ :group 'files
+ :type 'regexp)
(defvar abbreviated-home-dir nil
"The user's homedir abbreviated according to `directory-abbrev-alist'.")
For example, if you specify `*.c', that would visit all the files
whose names match the pattern."
:group 'files
+ :version "20.4"
:type 'boolean)
(defun find-file-noselect (filename &optional nowarn rawfile wildcards)
(abbreviate-file-name
(expand-file-name filename)))
(if (file-directory-p filename)
- (if find-file-run-dired
- (dired-noselect (if find-file-visit-truename
- (abbreviate-file-name (file-truename filename))
- filename))
- (error "%s is a directory" filename))
+ (or (and find-file-run-dired
+ (run-hook-with-args-until-success
+ 'find-directory-functions
+ (if find-file-visit-truename
+ (abbreviate-file-name (file-truename filename))
+ filename)))
+ (error "%s is a directory" filename))
(if (and wildcards
find-file-wildcards
(not (string-match "\\`/:" filename))
(string-match "[[*?]" filename))
- (let ((files (file-expand-wildcards filename t))
+ (let ((files (condition-case nil
+ (file-expand-wildcards filename t)
+ (error (list filename))))
(find-file-wildcards nil))
(if (null files)
- (error "No files match `%s'" filename))
- (mapcar #'(lambda (fn) (find-file-noselect fn))
- files))
+ (find-file-noselect filename)
+ (car (mapcar #'find-file-noselect files))))
(let* ((buf (get-file-buffer filename))
(truename (abbreviate-file-name (file-truename filename)))
(number (nthcdr 10 (file-attributes truename)))
This is a permanent local.")
(put 'find-file-literally 'permanent-local t)
-(defun find-file-literally (filename)
+(defun find-file-literally (filename)
"Visit file FILENAME with no conversion of any kind.
Format conversion and character code conversion are both disabled,
and multibyte characters are disabled in the resulting buffer.
(msg
(cond ((and error (file-attributes buffer-file-name))
(setq buffer-read-only t)
- "File exists, but cannot be read.")
+ "File exists, but cannot be read")
((not buffer-read-only)
(if (and warn
- (file-newer-than-file-p (make-auto-save-file-name)
+ ;; No need to warn if buffer is auto-saved
+ ;; under the name of the visited file.
+ (not (and buffer-file-name
+ auto-save-visited-file-name))
+ (file-newer-than-file-p (or buffer-auto-save-file-name
+ (make-auto-save-file-name))
buffer-file-name))
(format "%s has auto save data; consider M-x recover-file"
(file-name-nondirectory buffer-file-name))
(or not-serious (sit-for 1 nil t)))))
(if (and auto-save-default (not noauto))
(auto-save-mode t)))
+ ;; Make people do a little extra work (C-x C-q)
+ ;; before altering a backup file.
+ (if (backup-file-name-p buffer-file-name)
+ (setq buffer-read-only t))
(if nomodes
nil
(and view-read-only view-mode
("\\.sim\\'" . simula-mode)
("\\.mss\\'" . scribe-mode)
("\\.f90\\'" . f90-mode)
+ ("\\.pro\\'" . idlwave-mode)
("\\.lsp\\'" . lisp-mode)
("\\.awk\\'" . awk-mode)
("\\.prolog\\'" . prolog-mode)
;; _emacs following a directory delimiter
;; in MsDos syntax
("[:/]_emacs\\'" . emacs-lisp-mode)
+ ("/crontab\\.X*[0-9]+\\'" . shell-script-mode)
("\\.ml\\'" . lisp-mode)
("\\.asn$" . snmp-mode)
("\\.mib$" . snmp-mode)
("\\.smi$" . snmp-mode)
("\\.as2$" . snmpv2-mode)
("\\.mi2$" . snmpv2-mode)
- ("\\.sm2$" . snmpv2-mode))
+ ("\\.sm2$" . snmpv2-mode)
+ ("\\.\\(diffs?\\|patch\\|rej\\)\\'" . diff-mode)
+ ("\\.[eE]?[pP][sS]$" . ps-mode)
+ ("configure\\.in\\'" . autoconf-mode)
+ ("EBROWSE\\'" . ebrowse-tree-mode)
+ ("\\.ebrowse\\'" . ebrowse-tree-mode))
"\
Alist of filename patterns vs corresponding major mode functions.
Each element looks like (REGEXP . FUNCTION) or (REGEXP FUNCTION NON-NIL).
When checking `inhibit-first-line-modes-regexps', we first discard
from the end of the file name anything that matches one of these regexps.")
-(defvar user-init-file nil
- "File name, including directory, of user's initialization file.")
-
(defun set-auto-mode (&optional just-from-file-name)
"Select major mode appropriate for current buffer.
This checks for a -*- mode tag in the buffer's text,
(if (string-match (car (car alist)) name)
(if (and (consp (cdr (car alist)))
(nth 2 (car alist)))
- (progn
- (setq mode (car (cdr (car alist)))
- name (substring name 0 (match-beginning 0))
- keep-going t))
+ (setq mode (car (cdr (car alist)))
+ name (substring name 0 (match-beginning 0))
+ keep-going t)
(setq mode (cdr (car alist))
keep-going nil)))
(setq alist (cdr alist))))
(let ((interpreter
(save-excursion
(goto-char (point-min))
- (if (looking-at "#![ \t]?\\([^ \t\n]*/bin/env[ \t]\\)?\\([^ \t\n]+\\)")
- (buffer-substring (match-beginning 2)
- (match-end 2))
+ (if (looking-at "#![ \t]?\\([^ \t\n]*\
+/bin/env[ \t]\\)?\\([^ \t\n]+\\)")
+ (match-string 2)
"")))
elt)
;; Map interpreter name to a mode.
(funcall (cdr elt))))))))))))
(defun hack-local-variables-prop-line ()
- ;; Set 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:'.
+ "Set 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:'."
(save-excursion
(goto-char (point-min))
(let ((result nil)
(error "-*- not terminated before end of line")))
(while (< (point) end)
(or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*")
- (error "malformed -*- line"))
+ (error "Malformed -*- line"))
(goto-char (match-end 0))
;; There used to be a downcase here,
;; but the manual didn't say so,
(defun hack-one-local-variable-quotep (exp)
(and (consp exp) (eq (car exp) 'quote) (consp (cdr exp))))
-;; "Set" one variable in a local variables spec.
-;; A few variable names are treated specially.
(defun hack-one-local-variable (var val)
+ "\"Set\" one variable in a local variables spec.
+A few variable names are treated specially."
(cond ((eq var 'mode)
(funcall (intern (concat (downcase (symbol-name val))
"-mode"))))
;; Actually write the back up file.
(condition-case ()
(if (or file-precious-flag
- ; (file-symlink-p buffer-file-name)
+ ; (file-symlink-p buffer-file-name)
backup-by-copying
(and backup-by-copying-when-linked
(> (file-nlinks real-file-name) 1))
- (and backup-by-copying-when-mismatch
+ (and (or backup-by-copying-when-mismatch
+ (integerp backup-by-copying-when-privileged-mismatch))
(let ((attr (file-attributes real-file-name)))
- (or (nth 9 attr)
- (not (file-ownership-preserved-p real-file-name))))))
+ (and (or backup-by-copying-when-mismatch
+ (and (integerp (nth 2 attr))
+ (integerp backup-by-copying-when-privileged-mismatch)
+ (<= (nth 2 attr) backup-by-copying-when-privileged-mismatch)))
+ (or (nth 9 attr)
+ (not (file-ownership-preserved-p real-file-name)))))))
(condition-case ()
(copy-file real-file-name backupname t t)
(file-error
(file-error nil))))))
(defun file-name-sans-versions (name &optional keep-backup-version)
- "Return FILENAME sans backup versions or strings.
+ "Return file NAME sans backup versions or strings.
This is a separate procedure so your site-init or startup file can
redefine it.
If the optional argument KEEP-BACKUP-VERSION is non-nil,
(length name))))))))
(defun file-ownership-preserved-p (file)
- "Returns t if deleting FILE and rewriting it would preserve the owner."
+ "Return t if deleting FILE and rewriting it would preserve the owner."
(let ((handler (find-file-name-handler file 'file-ownership-preserved-p)))
(if handler
(funcall handler 'file-ownership-preserved-p file)
(if period
"")))))
+(defcustom make-backup-file-name-function nil
+ "A function to use instead of the default `make-backup-file-name'.
+A value of nil gives the default `make-backup-file-name' behaviour.
+
+This could be buffer-local to do something special for for specific
+files. If you define it, you may need to change `backup-file-name-p'
+and `file-name-sans-versions' too.
+
+See also `backup-directory-alist'."
+ :group 'backup
+ :type '(choice (const :tag "Default" nil)
+ (function :tag "Your function")))
+
+(defcustom backup-directory-alist nil
+ "Alist of filename patterns and backup directory names.
+Each element looks like (REGEXP . DIRECTORY). Backups of files with
+names matching REGEXP will be made in DIRECTORY. DIRECTORY may be
+relative or absolute. If it is absolute, so that all matching files
+are backed up into the same directory, the file names in this
+directory will be the full name of the file backed up with all
+directory separators changed to `|' to prevent clashes. This will not
+work correctly if your filesystem truncates the resulting name.
+
+For the common case of all backups going into one directory, the alist
+should contain a single element pairing \".\" with the appropriate
+directory name.
+
+If this variable is nil, or it fails to match a filename, the backup
+is made in the original file's directory.
+
+On MS-DOS filesystems without long names this variable is always
+ignored."
+ :group 'backup
+ :type '(repeat (cons (regexp :tag "Regexp macthing filename")
+ (directory :tag "Backup directory name"))))
+
(defun make-backup-file-name (file)
"Create the non-numeric backup file name for FILE.
-This is a separate function so you can redefine it for customization."
- (if (and (eq system-type 'ms-dos)
- (not (msdos-long-file-names)))
- (let ((fn (file-name-nondirectory file)))
- (concat (file-name-directory file)
- (or
- (and (string-match "\\`[^.]+\\'" fn)
- (concat (match-string 0 fn) ".~"))
- (and (string-match "\\`[^.]+\\.\\(..?\\)?" fn)
- (concat (match-string 0 fn) "~")))))
- (concat file "~")))
+Normally this will just be the file's name with `~' appended.
+Customization hooks are provided as follows.
+
+If the variable `make-backup-file-name-function' is non-nil, its value
+should be a function which will be called with FILE as its argument;
+the resulting name is used.
+
+Otherwise a match for FILE is sought in `backup-directory-alist'; see
+the documentation of that variable. If the directory for the backup
+doesn't exist, it is created."
+ (if make-backup-file-name-function
+ (funcall make-backup-file-name-function file)
+ (if (and (eq system-type 'ms-dos)
+ (not (msdos-long-file-names)))
+ (let ((fn (file-name-nondirectory file)))
+ (concat (file-name-directory file)
+ (or (and (string-match "\\`[^.]+\\'" fn)
+ (concat (match-string 0 fn) ".~"))
+ (and (string-match "\\`[^.]+\\.\\(..?\\)?" fn)
+ (concat (match-string 0 fn) "~")))))
+ (concat (make-backup-file-name-1 file) "~"))))
+
+(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)
+ (while alist
+ (setq elt (pop alist))
+ (if (string-match (car elt) file)
+ (setq backup-directory (cdr elt)
+ alist nil)))
+ (if (null backup-directory)
+ file
+ (unless (file-exists-p backup-directory)
+ (condition-case nil
+ (make-directory backup-directory 'parents)
+ (file-error file)))
+ (if (file-name-absolute-p backup-directory)
+ ;; Make the name unique by substituting directory
+ ;; separators. It may not really be worth bothering about
+ ;; doubling `|'s in the original name...
+ (expand-file-name
+ (subst-char-in-string
+ directory-sep-char ?|
+ (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))))))))
(defun backup-file-name-p (file)
"Return non-nil if FILE is a backup file name (numeric or not).
;; The usage of backup-extract-version-start is not very clean,
;; but I can't see a good alternative, so as of now I am leaving it alone.
(defun backup-extract-version (fn)
- "Given the name of a numeric backup file, return the backup number.
+ "Given the name of a numeric backup file, FN, return the backup number.
Uses the free variable `backup-extract-version-start', whose value should be
the index in the name where the version number begins."
(if (and (string-match "[0-9]+~$" fn backup-extract-version-start)
;; I believe there is no need to alter this behavior for VMS;
;; since backup files are not made on VMS, it should not get called.
(defun find-backup-file-name (fn)
- "Find a file name for a backup file, and suggestions for deletions.
+ "Find a file name for a backup file FN, and suggestions for deletions.
Value is a list whose car is the name for the backup file
- and whose cdr is a list of old versions to consider deleting now.
-If the value is nil, don't make a backup."
+and whose cdr is a list of old versions to consider deleting now.
+If the value is nil, don't make a backup.
+Uses `backup-directory-alist' in the same way as does
+`make-backup-file-name'."
(let ((handler (find-file-name-handler fn 'find-backup-file-name)))
;; Run a handler for this function so that ange-ftp can refuse to do it.
(if handler
(funcall handler 'find-backup-file-name fn)
(if (eq version-control 'never)
(list (make-backup-file-name fn))
- (let* ((base-versions (concat (file-name-nondirectory fn) ".~"))
+ (let* ((basic-name (make-backup-file-name-1 fn))
+ (base-versions (concat (file-name-nondirectory basic-name)
+ ".~"))
(backup-extract-version-start (length base-versions))
- possibilities
- (versions nil)
(high-water-mark 0)
- (deserve-versions-p nil)
- (number-to-delete 0))
+ (number-to-delete 0)
+ possibilities deserve-versions-p versions)
(condition-case ()
(setq possibilities (file-name-all-completions
base-versions
- (file-name-directory fn))
- versions (sort (mapcar
- (function backup-extract-version)
- possibilities)
- '<)
+ (file-name-directory basic-name))
+ versions (sort (mapcar #'backup-extract-version
+ possibilities)
+ #'<)
high-water-mark (apply 'max 0 versions)
deserve-versions-p (or version-control
(> high-water-mark 0))
number-to-delete (- (length versions)
- kept-old-versions kept-new-versions -1))
- (file-error
- (setq possibilities nil)))
+ kept-old-versions
+ kept-new-versions
+ -1))
+ (file-error (setq possibilities nil)))
(if (not deserve-versions-p)
- (list (make-backup-file-name fn))
- (cons (concat fn ".~" (int-to-string (1+ high-water-mark)) "~")
+ (list (concat basic-name "~"))
+ (cons (format "%s.~%d~" basic-name (1+ high-water-mark))
(if (and (> number-to-delete 0)
;; Delete nothing if there is overflow
;; in the number of versions to keep.
(>= (+ kept-new-versions kept-old-versions -1) 0))
- (mapcar (function (lambda (n)
- (concat fn ".~" (int-to-string n) "~")))
+ (mapcar (lambda (n)
+ (format "%s.~%d~" basic-name n))
(let ((v (nthcdr kept-old-versions versions)))
(rplacd (nthcdr (1- number-to-delete) v) ())
v))))))))))
(car (cdr (file-attributes filename))))
(defun file-relative-name (filename &optional directory)
- "Convert FILENAME to be relative to DIRECTORY (default: default-directory).
+ "Convert FILENAME to be relative to DIRECTORY (default: `default-directory').
This function returns a relative file name which is equivalent to FILENAME
when used with that default directory as the default.
If this is impossible (which can happen on MSDOS and Windows
(if (and (eq system-type 'ms-dos)
(not (msdos-long-file-names)))
"%s#%d.tm#" ; MSDOS limits files to 8+3
- "%s#tmp#%d")
+ (if (memq system-type '(vax-vms axp-vms))
+ "%s$tmp$%d"
+ "%s#tmp#%d"))
dir i))
(setq nogood (file-exists-p tempname))
(setq i (1+ i)))
buffer-file-name nil t buffer-file-truename)))
setmodes))
-(defun save-some-buffers (&optional arg exiting)
+(defun save-some-buffers (&optional arg pred)
"Save some modified file-visiting buffers. Asks user about each one.
Optional argument (the prefix) non-nil means save all with no questions.
-Optional second argument EXITING means ask about certain non-file buffers
- as well as about file buffers."
+Optional second argument PRED determines which buffers are considered:
+If PRED is nil, all the file-visiting buffers are considered.
+If PRED is t, then certain non-file buffers will also be considered.
+If PRED is a zero-argument function, it indicates for each buffer whether
+to consider it or not when called with that buffer current."
(interactive "P")
(save-window-excursion
(let* ((queried nil)
(not (buffer-base-buffer buffer))
(or
(buffer-file-name buffer)
- (and exiting
+ (and pred
(progn
(set-buffer buffer)
(and buffer-offer-save (> (buffer-size) 0)))))
+ (or (not (functionp pred))
+ (with-current-buffer buffer (funcall pred)))
(if arg
t
(setq queried t)
(defun file-newest-backup (filename)
"Return most recent backup file for FILENAME or nil if no backups exist."
- (let* ((filename (expand-file-name filename))
+ ;; `make-backup-file-name' will get us the right directory for
+ ;; ordinary or numeric backups. It might create a directory for
+ ;; backups as a side-effect, according to `backup-directory-alist'.
+ (let* ((filename (file-name-sans-versions
+ (make-backup-file-name filename)))
(file (file-name-nondirectory filename))
(dir (file-name-directory filename))
(comp (file-name-all-completions file dir))
(newest nil)
tem)
(while comp
- (setq tem (car comp)
- comp (cdr comp))
+ (setq tem (pop comp))
(cond ((and (backup-file-name-p tem)
(string= (file-name-sans-versions tem) file))
(setq tem (concat dir tem))
to nil.
Optional second argument NOCONFIRM means don't ask for confirmation at
-all. (The local variable `revert-without-query', if non-nil, prevents
+all. (The local variable `revert-without-query', if non-nil, prevents
confirmation.)
Optional third argument PRESERVE-MODES non-nil means don't alter
before calling this function. You can redefine this for customization.
See also `auto-save-file-name-p'."
(if buffer-file-name
- (if (and (eq system-type 'ms-dos)
- (not (msdos-long-file-names)))
- (let ((fn (file-name-nondirectory buffer-file-name)))
- (string-match "\\`\\([^.]+\\)\\(\\.\\(..?\\)?.?\\|\\)\\'" fn)
- (concat (file-name-directory buffer-file-name)
- "#" (match-string 1 fn)
- "." (match-string 3 fn) "#"))
- (concat (file-name-directory buffer-file-name)
- "#"
- (file-name-nondirectory buffer-file-name)
- "#"))
+ (let ((list auto-save-file-name-transforms)
+ (filename buffer-file-name)
+ result)
+ ;; Apply user-specified translations
+ ;; to the file name.
+ (while (and list (not result))
+ (if (string-match (car (car list)) filename)
+ (setq result (replace-match (cadr (car list)) t nil
+ filename)))
+ (setq list (cdr list)))
+ (if result (setq filename result))
+
+ (if (and (eq system-type 'ms-dos)
+ (not (msdos-long-file-names)))
+ (let ((fn (file-name-nondirectory buffer-file-name)))
+ (string-match "\\`\\([^.]+\\)\\(\\.\\(..?\\)?.?\\|\\)\\'" fn)
+ (concat (file-name-directory buffer-file-name)
+ "#" (match-string 1 fn)
+ "." (match-string 3 fn) "#"))
+ (concat (file-name-directory filename)
+ "#"
+ (file-name-nondirectory filename)
+ "#")))
;; Deal with buffers that don't have any associated files. (Mail
;; mode tends to create a good number of these.)
\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)
(if (/= result 0)
;; We get here if ls failed.
;; Access the file to get a suitable error.
- (access-file file "Reading directory")))))))
-
+ (access-file file "Reading directory")
+ ;; Replace "total" with "used", to avoid confusion.
+ ;; Add in the amount of free space.
+ (save-excursion
+ (goto-char (point-min))
+ (when (re-search-forward "^total" nil t)
+ (replace-match "used")
+ (end-of-line)
+ (let (available)
+ (with-temp-buffer
+ (call-process "df" nil t nil ".")
+ (goto-char (point-min))
+ (forward-line 1)
+ (skip-chars-forward "^ \t")
+ (forward-word 3)
+ (let ((end (point)))
+ (forward-word -1)
+ (setq available (buffer-substring (point) end))))
+ (insert " available " available))))))))))
+
(defvar kill-emacs-query-functions nil
"Functions to call with no arguments to query about killing Emacs.
If any of these functions returns nil, killing Emacs is cancelled.
(run-hook-with-args-until-failure 'kill-emacs-query-functions)
(kill-emacs)))
\f
-;; We use /: as a prefix to "quote" a file name
+;; We use /: as a prefix to "quote" a file name
;; so that magic file name handlers will not apply to it.
(setq file-name-handler-alist
(default-directory
(if (eq operation 'insert-directory)
(directory-file-name
- (expand-file-name
+ (expand-file-name
(unhandled-file-name-directory default-directory)))
default-directory))
;; Get a list of the indices of the args which are file names.
HCoop / bpt / emacs.git / blobdiff