;;; files.el --- file input and output commands for Emacs
;; Copyright (C) 1985, 86, 87, 92, 93,
-;; 94, 95, 96, 97, 1998 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)
-(defvar backup-enable-predicate
- '(lambda (name)
- (or (< (length name) 5)
- (not (string-equal "/tmp/" (substring name 0 5)))))
+(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)
+
+(defun normal-backup-enable-predicate (name)
+ "Default `backup-enable-predicate' function.
+Checks for files in `temporary-file-directory' or
+`small-temporary-file-directory'."
+ (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)))))))
+
+(defvar backup-enable-predicate 'normal-backup-enable-predicate
"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.")
(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'.")
(or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp"))))
"The directory for writing temporary files.")
+(defvar small-temporary-file-directory
+ (if (eq system-type 'ms-dos) (getenv "TMPDIR"))
+ "The directory for writing small temporary files.
+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 convert-standard-filename (filename)
"Convert a standard file's name to something suitable for the current OS.
This function's standard definition is trivial; it just returns the argument.
-However, on some systems, the function is redefined
-with a definition that really does change some file names."
+However, on some systems, the function is redefined with a definition
+that really does change some file names to canonicalize certain
+patterns and to guarantee valid names."
filename)
\f
(defun pwd ()
Not actually set up until the first time you you use it.")
(defun parse-colon-path (cd-path)
- "Explode a colon-separated search path into a list of directory names."
+ "Explode a colon-separated search path into a list of directory names.
+\(For values of `colon' equal to `path-separator'.)"
+ ;; We could use split-string here.
(and cd-path
(let (cd-prefix cd-list (cd-start 0) cd-colon)
(setq cd-path (concat cd-path path-separator))
(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)))
(pop-to-buffer buffer t norecord)
(raise-frame (window-frame (selected-window)))))
-(defun find-file (filename)
+(defun find-file (filename &optional wildcards)
"Edit file FILENAME.
Switch to a buffer visiting file FILENAME,
-creating one if none already exists."
- (interactive "FFind file: ")
- (switch-to-buffer (find-file-noselect filename)))
-
-(defun find-file-other-window (filename)
+creating one if none already exists.
+Interactively, or if WILDCARDS is non-nil in a call from Lisp,
+expand wildcards (if any) and visit multiple files. Wildcard expansion
+can be suppressed by setting `find-file-wildcards'."
+ (interactive "FFind file: \np")
+ (let ((value (find-file-noselect filename nil nil wildcards)))
+ (if (listp value)
+ (mapcar 'switch-to-buffer (nreverse value))
+ (switch-to-buffer value))))
+
+(defun find-file-other-window (filename &optional wildcards)
"Edit file FILENAME, in another window.
May create a new window, or reuse an existing one.
-See the function `display-buffer'."
- (interactive "FFind file in other window: ")
- (switch-to-buffer-other-window (find-file-noselect filename)))
+See the function `display-buffer'.
+Interactively, or if WILDCARDS is non-nil in a call from Lisp,
+expand wildcards (if any) and visit multiple files."
+ (interactive "FFind file in other window: \np")
+ (let ((value (find-file-noselect filename nil nil wildcards)))
+ (if (listp value)
+ (progn
+ (setq value (nreverse value))
+ (switch-to-buffer-other-window (car value))
+ (mapcar 'switch-to-buffer (cdr value)))
+ (switch-to-buffer-other-window value))))
-(defun find-file-other-frame (filename)
+(defun find-file-other-frame (filename &optional wildcards)
"Edit file FILENAME, in another frame.
May create a new frame, or reuse an existing one.
-See the function `display-buffer'."
- (interactive "FFind file in other frame: ")
- (switch-to-buffer-other-frame (find-file-noselect filename)))
+See the function `display-buffer'.
+Interactively, or if WILDCARDS is non-nil in a call from Lisp,
+expand wildcards (if any) and visit multiple files."
+ (interactive "FFind file in other frame: \np")
+ (let ((value (find-file-noselect filename nil nil wildcards)))
+ (if (listp value)
+ (progn
+ (setq value (nreverse value))
+ (switch-to-buffer-other-frame (car value))
+ (mapcar 'switch-to-buffer (cdr value)))
+ (switch-to-buffer-other-frame value))))
-(defun find-file-read-only (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: ")
- (find-file filename)
+ (interactive "fFind file read-only: \np")
+ (find-file filename wildcards)
(toggle-read-only 1)
(current-buffer))
-(defun find-file-read-only-other-window (filename)
+(defun find-file-read-only-other-window (filename &optional wildcards)
"Edit file FILENAME in another window but don't allow changes.
Like \\[find-file-other-window] but marks buffer as read-only.
Use \\[toggle-read-only] to permit editing."
- (interactive "fFind file read-only other window: ")
- (find-file-other-window filename)
+ (interactive "fFind file read-only other window: \np")
+ (find-file-other-window filename wildcards)
(toggle-read-only 1)
(current-buffer))
-(defun find-file-read-only-other-frame (filename)
+(defun find-file-read-only-other-frame (filename &optional wildcards)
"Edit file FILENAME in another frame but don't allow changes.
Like \\[find-file-other-frame] but marks buffer as read-only.
Use \\[toggle-read-only] to permit editing."
- (interactive "fFind file read-only other frame: ")
- (find-file-other-frame filename)
+ (interactive "fFind file read-only other frame: \np")
+ (find-file-other-frame filename wildcards)
(toggle-read-only 1)
(current-buffer))
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-list'.")
+ "The user's homedir abbreviated according to `directory-abbrev-alist'.")
(defun abbreviate-file-name (filename)
"Return a version of FILENAME shortened using `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)
+(defun find-file-noselect (filename &optional nowarn rawfile wildcards)
"Read file FILENAME into a buffer and return the buffer.
If a buffer exists visiting FILENAME, return that one, but
verify that the file has not changed since visited or saved.
The buffer is not selected, just returned to the caller.
Optional first arg NOWARN non-nil means suppress any warning messages.
-Optional second arg RAWFILE non-nil means the file is read literally."
+Optional second arg RAWFILE non-nil means the file is read literally.
+Optional third arg WILDCARDS non-nil means do wildcard processing
+and visit all the matching files. When wildcards are actually
+used and expanded, the value is a list of buffers
+that are visiting the various files."
(setq filename
(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))
- (if (and find-file-wildcards
+ (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))
- (car (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)))
(or (run-hook-with-args-until-success 'find-file-not-found-hooks)
;; If they fail too, set error.
(setq error t)))))
- ;; Find the file's truename, and maybe use that as visited name.
- (setq buffer-file-truename truename)
+ ;; Record the file's truename, and maybe use that as visited name.
+ (if (equal filename buffer-file-name)
+ (setq buffer-file-truename truename)
+ (setq buffer-file-truename
+ (abbreviate-file-name (file-truename buffer-file-name))))
(setq buffer-file-number number)
;; On VMS, we may want to remember which directory in a search list
;; the file was found in.
(setq filename
(expand-file-name buffer-file-truename))))
;; Set buffer's default directory to that of the file.
- (setq default-directory (file-name-directory filename))
+ (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))
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
+ (view-mode-disable))
(normal-mode t)
(if (and buffer-read-only view-read-only
(not (eq (get major-mode 'mode-class) 'special)))
(prin1-to-string err)))))
(defvar auto-mode-alist
- '(("\\.te?xt\\'" . text-mode)
- ("\\.c\\'" . c-mode)
- ("\\.h\\'" . c-mode)
- ("\\.tex\\'" . tex-mode)
- ("\\.ltx\\'" . latex-mode)
- ("\\.el\\'" . emacs-lisp-mode)
- ("\\.scm\\'" . scheme-mode)
- ("\\.l\\'" . lisp-mode)
- ("\\.lisp\\'" . lisp-mode)
- ("\\.f\\'" . fortran-mode)
- ("\\.F\\'" . fortran-mode)
- ("\\.for\\'" . fortran-mode)
- ("\\.p\\'" . pascal-mode)
- ("\\.pas\\'" . pascal-mode)
- ("\\.ad[abs]\\'" . ada-mode)
- ("\\.\\([pP][Llm]\\|al\\)\\'" . perl-mode)
- ("\\.s?html?\\'" . html-mode)
- ("\\.cc\\'" . c++-mode)
- ("\\.hh\\'" . c++-mode)
- ("\\.hpp\\'" . c++-mode)
- ("\\.C\\'" . c++-mode)
- ("\\.H\\'" . c++-mode)
- ("\\.cpp\\'" . c++-mode)
- ("\\.cxx\\'" . c++-mode)
- ("\\.hxx\\'" . c++-mode)
- ("\\.c\\+\\+\\'" . c++-mode)
- ("\\.h\\+\\+\\'" . c++-mode)
- ("\\.m\\'" . objc-mode)
- ("\\.java\\'" . java-mode)
- ("\\.mk\\'" . makefile-mode)
- ("\\(M\\|m\\|GNUm\\)akefile\\(\\.in\\)?\\'" . makefile-mode)
- ("\\.am\\'" . makefile-mode) ;For Automake.
+ (mapc
+ (lambda (elt)
+ (cons (purecopy (car elt)) (cdr elt)))
+ '(("\\.te?xt\\'" . text-mode)
+ ("\\.c\\'" . c-mode)
+ ("\\.h\\'" . c-mode)
+ ("\\.tex\\'" . tex-mode)
+ ("\\.ltx\\'" . latex-mode)
+ ("\\.el\\'" . emacs-lisp-mode)
+ ("\\.scm\\'" . scheme-mode)
+ ("\\.l\\'" . lisp-mode)
+ ("\\.lisp\\'" . lisp-mode)
+ ("\\.f\\'" . fortran-mode)
+ ("\\.F\\'" . fortran-mode)
+ ("\\.for\\'" . fortran-mode)
+ ("\\.p\\'" . pascal-mode)
+ ("\\.pas\\'" . pascal-mode)
+ ("\\.ad[abs]\\'" . ada-mode)
+ ("\\.\\([pP][Llm]\\|al\\)\\'" . perl-mode)
+ ("\\.s?html?\\'" . html-mode)
+ ("\\.cc\\'" . c++-mode)
+ ("\\.hh\\'" . c++-mode)
+ ("\\.hpp\\'" . c++-mode)
+ ("\\.C\\'" . c++-mode)
+ ("\\.H\\'" . c++-mode)
+ ("\\.cpp\\'" . c++-mode)
+ ("\\.cxx\\'" . c++-mode)
+ ("\\.hxx\\'" . c++-mode)
+ ("\\.c\\+\\+\\'" . c++-mode)
+ ("\\.h\\+\\+\\'" . c++-mode)
+ ("\\.m\\'" . objc-mode)
+ ("\\.java\\'" . java-mode)
+ ("\\.mk\\'" . makefile-mode)
+ ("\\(M\\|m\\|GNUm\\)akefile\\(\\.in\\)?\\'" . makefile-mode)
+ ("\\.am\\'" . makefile-mode) ;For Automake.
;;; Less common extensions come here
;;; so more common ones above are found faster.
- ("\\.texinfo\\'" . texinfo-mode)
- ("\\.te?xi\\'" . texinfo-mode)
- ("\\.s\\'" . asm-mode)
- ("\\.S\\'" . asm-mode)
- ("\\.asm\\'" . asm-mode)
- ("ChangeLog\\'" . change-log-mode)
- ("change\\.log\\'" . change-log-mode)
- ("changelo\\'" . change-log-mode)
- ("ChangeLog\\.[0-9]+\\'" . change-log-mode)
- ;; for MSDOS and MS-Windows (which are case-insensitive)
- ("changelog\\'" . change-log-mode)
- ("changelog\\.[0-9]+\\'" . change-log-mode)
- ("\\$CHANGE_LOG\\$\\.TXT" . change-log-mode)
- ("\\.scm\\.[0-9]*\\'" . scheme-mode)
- ("\\.[ck]?sh\\'\\|\\.shar\\'\\|/\\.z?profile\\'" . sh-mode)
- ("\\(/\\|\\`\\)\\.\\(bash_profile\\|z?login\\|bash_login\\|z?logout\\)\\'" . sh-mode)
- ("\\(/\\|\\`\\)\\.\\(bash_logout\\|[kz]shrc\\|bashrc\\|t?cshrc\\|esrc\\)\\'" . sh-mode)
- ("\\(/\\|\\`\\)\\.\\([kz]shenv\\|xinitrc\\|startxrc\\|xsession\\)\\'" . sh-mode)
- ("\\.m?spec$" . sh-mode)
- ("\\.mm\\'" . nroff-mode)
- ("\\.me\\'" . nroff-mode)
- ("\\.ms\\'" . nroff-mode)
- ("\\.man\\'" . nroff-mode)
+ ("\\.texinfo\\'" . texinfo-mode)
+ ("\\.te?xi\\'" . texinfo-mode)
+ ("\\.s\\'" . asm-mode)
+ ("\\.S\\'" . asm-mode)
+ ("\\.asm\\'" . asm-mode)
+ ("ChangeLog\\'" . change-log-mode)
+ ("change\\.log\\'" . change-log-mode)
+ ("changelo\\'" . change-log-mode)
+ ("ChangeLog\\.[0-9]+\\'" . change-log-mode)
+ ;; for MSDOS and MS-Windows (which are case-insensitive)
+ ("changelog\\'" . change-log-mode)
+ ("changelog\\.[0-9]+\\'" . change-log-mode)
+ ("\\$CHANGE_LOG\\$\\.TXT" . change-log-mode)
+ ("\\.scm\\.[0-9]*\\'" . scheme-mode)
+ ("\\.[ck]?sh\\'\\|\\.shar\\'\\|/\\.z?profile\\'" . sh-mode)
+ ("\\(/\\|\\`\\)\\.\\(bash_profile\\|z?login\\|bash_login\\|z?logout\\)\\'" . sh-mode)
+ ("\\(/\\|\\`\\)\\.\\(bash_logout\\|shrc\\|[kz]shrc\\|bashrc\\|t?cshrc\\|esrc\\)\\'" . sh-mode)
+ ("\\(/\\|\\`\\)\\.\\([kz]shenv\\|xinitrc\\|startxrc\\|xsession\\)\\'" . sh-mode)
+ ("\\.m?spec$" . sh-mode)
+ ("\\.mm\\'" . nroff-mode)
+ ("\\.me\\'" . nroff-mode)
+ ("\\.ms\\'" . nroff-mode)
+ ("\\.man\\'" . nroff-mode)
+ ("\\.\\(u?lpc\\|pike\\|pmod\\)\\'" . pike-mode)
;;; The following should come after the ChangeLog pattern
;;; for the sake of ChangeLog.1, etc.
;;; and after the .scm.[0-9] pattern too.
- ("\\.[12345678]\\'" . nroff-mode)
- ("\\.TeX\\'" . tex-mode)
- ("\\.sty\\'" . latex-mode)
- ("\\.cls\\'" . latex-mode) ;LaTeX 2e class
- ("\\.clo\\'" . latex-mode) ;LaTeX 2e class option
- ("\\.bbl\\'" . latex-mode)
- ("\\.bib\\'" . bibtex-mode)
- ("\\.sql\\'" . sql-mode)
- ("\\.m4\\'" . m4-mode)
- ("\\.mc\\'" . m4-mode)
- ("\\.mf\\'" . metafont-mode)
- ("\\.mp\\'" . metapost-mode)
- ("\\.vhdl?\\'" . vhdl-mode)
- ("\\.article\\'" . text-mode)
- ("\\.letter\\'" . text-mode)
- ("\\.tcl\\'" . tcl-mode)
- ("\\.exp\\'" . tcl-mode)
- ("\\.itcl\\'" . tcl-mode)
- ("\\.itk\\'" . tcl-mode)
- ("\\.icn\\'" . icon-mode)
- ("\\.sim\\'" . simula-mode)
- ("\\.mss\\'" . scribe-mode)
- ("\\.f90\\'" . f90-mode)
- ("\\.lsp\\'" . lisp-mode)
- ("\\.awk\\'" . awk-mode)
- ("\\.prolog\\'" . prolog-mode)
- ("\\.tar\\'" . tar-mode)
- ("\\.\\(arc\\|zip\\|lzh\\|zoo\\|jar\\)\\'" . archive-mode)
- ("\\.\\(ARC\\|ZIP\\|LZH\\|ZOO\\|JAR\\)\\'" . archive-mode)
- ;; 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)
- ("\\.y\\'" . c-mode)
- ("\\.lex\\'" . c-mode)
- ("\\.oak\\'" . scheme-mode)
- ("\\.sgml?\\'" . sgml-mode)
- ("\\.xml\\'" . sgml-mode)
- ("\\.dtd\\'" . sgml-mode)
- ("\\.ds\\(ss\\)?l\\'" . dsssl-mode)
- ("\\.idl\\'" . idl-mode)
- ;; .emacs following a directory delimiter
- ;; in Unix, MSDOG or VMS syntax.
- ("[]>:/\\]\\..*emacs\\'" . emacs-lisp-mode)
- ("\\`\\..*emacs\\'" . emacs-lisp-mode)
- ;; _emacs following a directory delimiter
- ;; in MsDos syntax
- ("[:/]_emacs\\'" . emacs-lisp-mode)
- ("\\.ml\\'" . lisp-mode)
- ("\\.asn$" . snmp-mode)
- ("\\.mib$" . snmp-mode)
- ("\\.smi$" . snmp-mode)
- ("\\.as2$" . snmpv2-mode)
- ("\\.mi2$" . snmpv2-mode)
- ("\\.sm2$" . snmpv2-mode))
- "\
-Alist of filename patterns vs corresponding major mode functions.
+ ("\\.[12345678]\\'" . nroff-mode)
+ ("\\.TeX\\'" . tex-mode)
+ ("\\.sty\\'" . latex-mode)
+ ("\\.cls\\'" . latex-mode) ;LaTeX 2e class
+ ("\\.clo\\'" . latex-mode) ;LaTeX 2e class option
+ ("\\.bbl\\'" . latex-mode)
+ ("\\.bib\\'" . bibtex-mode)
+ ("\\.sql\\'" . sql-mode)
+ ("\\.m4\\'" . m4-mode)
+ ("\\.mc\\'" . m4-mode)
+ ("\\.mf\\'" . metafont-mode)
+ ("\\.mp\\'" . metapost-mode)
+ ("\\.vhdl?\\'" . vhdl-mode)
+ ("\\.article\\'" . text-mode)
+ ("\\.letter\\'" . text-mode)
+ ("\\.tcl\\'" . tcl-mode)
+ ("\\.exp\\'" . tcl-mode)
+ ("\\.itcl\\'" . tcl-mode)
+ ("\\.itk\\'" . tcl-mode)
+ ("\\.icn\\'" . icon-mode)
+ ("\\.sim\\'" . simula-mode)
+ ("\\.mss\\'" . scribe-mode)
+ ("\\.f90\\'" . f90-mode)
+ ("\\.pro\\'" . idlwave-mode)
+ ("\\.lsp\\'" . lisp-mode)
+ ("\\.awk\\'" . awk-mode)
+ ("\\.prolog\\'" . prolog-mode)
+ ("\\.tar\\'" . tar-mode)
+ ("\\.\\(arc\\|zip\\|lzh\\|zoo\\|jar\\)\\'" . archive-mode)
+ ("\\.\\(ARC\\|ZIP\\|LZH\\|ZOO\\|JAR\\)\\'" . archive-mode)
+ ;; Mailer puts message to be edited in
+ ;; /tmp/Re.... or Message
+ ("\\`/tmp/Re" . text-mode)
+ ("/Message[0-9]*\\'" . text-mode)
+ ("/drafts/[0-9]+\\'" . mh-letter-mode)
+ ("\\.zone\\'" . zone-mode)
+ ;; some news reader is reported to use this
+ ("\\`/tmp/fol/" . text-mode)
+ ("\\.y\\'" . c-mode)
+ ("\\.lex\\'" . c-mode)
+ ("\\.oak\\'" . scheme-mode)
+ ("\\.sgml?\\'" . sgml-mode)
+ ("\\.xml\\'" . sgml-mode)
+ ("\\.dtd\\'" . sgml-mode)
+ ("\\.ds\\(ss\\)?l\\'" . dsssl-mode)
+ ("\\.idl\\'" . idl-mode)
+ ;; .emacs following a directory delimiter
+ ;; in Unix, MSDOG or VMS syntax.
+ ("[]>:/\\]\\..*emacs\\'" . emacs-lisp-mode)
+ ("\\`\\..*emacs\\'" . emacs-lisp-mode)
+ ;; _emacs following a directory delimiter
+ ;; in MsDos syntax
+ ("[:/]_emacs\\'" . emacs-lisp-mode)
+ ("/crontab\\.X*[0-9]+\\'" . shell-script-mode)
+ ("\\.ml\\'" . lisp-mode)
+ ("\\.asn$" . snmp-mode)
+ ("\\.mib$" . snmp-mode)
+ ("\\.smi$" . snmp-mode)
+ ("\\.as2$" . snmpv2-mode)
+ ("\\.mi2$" . snmpv2-mode)
+ ("\\.sm2$" . snmpv2-mode)
+ ("\\.\\(diffs?\\|patch\\|rej\\)\\'" . diff-mode)
+ ("\\.[eE]?[pP][sS]$" . ps-mode)
+ ("configure\\.in\\'" . autoconf-mode)
+ ("BROWSE\\'" . 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).
\(NON-NIL stands for anything that is not nil; the value does not matter.)
Visiting a file whose name matches REGEXP specifies FUNCTION as the
(defvar interpreter-mode-alist
- '(("perl" . perl-mode)
- ("perl5" . perl-mode)
- ("miniperl" . perl-mode)
- ("wish" . tcl-mode)
- ("wishx" . tcl-mode)
- ("tcl" . tcl-mode)
- ("tclsh" . tcl-mode)
- ("awk" . awk-mode)
- ("mawk" . awk-mode)
- ("nawk" . awk-mode)
- ("gawk" . awk-mode)
- ("scm" . scheme-mode)
- ("ash" . sh-mode)
- ("bash" . sh-mode)
- ("csh" . sh-mode)
- ("dtksh" . sh-mode)
- ("es" . sh-mode)
- ("itcsh" . sh-mode)
- ("jsh" . sh-mode)
- ("ksh" . sh-mode)
- ("oash" . sh-mode)
- ("pdksh" . sh-mode)
- ("rc" . sh-mode)
- ("rpm" . sh-mode)
- ("sh" . sh-mode)
- ("sh5" . sh-mode)
- ("tcsh" . sh-mode)
- ("wksh" . sh-mode)
- ("wsh" . sh-mode)
- ("zsh" . sh-mode)
- ("tail" . text-mode)
- ("more" . text-mode)
- ("less" . text-mode)
- ("pg" . text-mode))
+ (mapc
+ (lambda (l)
+ (cons (purecopy (car l)) (cdr l)))
+ '(("perl" . perl-mode)
+ ("perl5" . perl-mode)
+ ("miniperl" . perl-mode)
+ ("wish" . tcl-mode)
+ ("wishx" . tcl-mode)
+ ("tcl" . tcl-mode)
+ ("tclsh" . tcl-mode)
+ ("awk" . awk-mode)
+ ("mawk" . awk-mode)
+ ("nawk" . awk-mode)
+ ("gawk" . awk-mode)
+ ("scm" . scheme-mode)
+ ("ash" . sh-mode)
+ ("bash" . sh-mode)
+ ("bash2" . sh-mode)
+ ("csh" . sh-mode)
+ ("dtksh" . sh-mode)
+ ("es" . sh-mode)
+ ("itcsh" . sh-mode)
+ ("jsh" . sh-mode)
+ ("ksh" . sh-mode)
+ ("oash" . sh-mode)
+ ("pdksh" . sh-mode)
+ ("rc" . sh-mode)
+ ("rpm" . sh-mode)
+ ("sh" . sh-mode)
+ ("sh5" . sh-mode)
+ ("tcsh" . sh-mode)
+ ("wksh" . sh-mode)
+ ("wsh" . sh-mode)
+ ("zsh" . sh-mode)
+ ("tail" . text-mode)
+ ("more" . text-mode)
+ ("less" . text-mode)
+ ("pg" . text-mode)
+ ("make" . makefile-mode) ; Debian uses this
+ ("guile" . scheme-mode)
+ ("clisp" . lisp-mode)))
"Alist mapping interpreter names to major modes.
This alist applies to files whose first line starts with `#!'.
Each element looks like (INTERPRETER . MODE).
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,
;; outside the save-excursion.
(when modes
(unless just-from-file-name
- (mapcar 'funcall (nreverse modes)))
+ (mapc 'funcall (nreverse modes)))
(setq done t))
;; If we didn't find a mode from a -*- line, try using the file name.
(if (and (not done) buffer-file-name)
(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"))))
(defun write-file (filename &optional confirm)
"Write current buffer into file FILENAME.
-Makes buffer visit that file, and marks it not modified.
-If the buffer is already visiting a file, you can specify
-a directory name as FILENAME, to write a file of the same
-old name in that directory.
+This makes the buffer visit that file, and marks it as not modified.
+
+If you specify just a directory name as FILENAME, that means to use
+the default file name but in that directory. You can also yank
+the default file name into the minibuffer to edit it, using M-n.
-If optional second arg CONFIRM is non-nil,
-ask for confirmation for overwriting an existing file.
+If the buffer is not already visiting a file, the default file name
+for the output file is the buffer name.
+
+If optional second arg CONFIRM is non-nil, this function
+asks for confirmation before overwriting an existing file.
Interactively, confirmation is required unless you supply a prefix argument."
;; (interactive "FWrite file: ")
(interactive
(list (if buffer-file-name
(read-file-name "Write file: "
nil nil nil nil)
- (read-file-name "Write file: "
- (cdr (assq 'default-directory
- (buffer-local-variables)))
- nil nil (file-name-nondirectory (buffer-name))))
+ (read-file-name "Write file: " default-directory
+ (expand-file-name
+ (file-name-nondirectory (buffer-name))
+ default-directory)
+ nil nil))
(not current-prefix-arg)))
(or (null filename) (string-equal filename "")
(progn
;; If arg is just a directory,
- ;; use same file name, but in that directory.
- (if (and (file-directory-p filename) buffer-file-name)
+ ;; use the default file name, but in that directory.
+ (if (file-directory-p filename)
(setq filename (concat (file-name-as-directory filename)
- (file-name-nondirectory buffer-file-name))))
+ (file-name-nondirectory
+ (or buffer-file-name (buffer-name))))))
(and confirm
(file-exists-p filename)
(or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
;; 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 dir-sep-string)
+ (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)
+ (progn
+ (when (memq system-type '(windows-nt ms-dos))
+ ;; Normalize DOSish file names: convert all slashes to
+ ;; directory-sep-char, downcase the drive letter, if any,
+ ;; and replace the leading "x:" with "/drive_x".
+ (or (file-name-absolute-p file)
+ (setq file (expand-file-name file))) ; make defaults explicit
+ ;; Replace any invalid file-name characters (for the
+ ;; case of backing up remote files).
+ (setq file (convert-standard-filename file))
+ (setq dir-sep-string (char-to-string directory-sep-char))
+ (or (eq directory-sep-char ?/)
+ (subst-char-in-string ?/ ?\\ file))
+ (or (eq directory-sep-char ?\\)
+ (subst-char-in-string ?\\ ?/ file))
+ (if (eq (aref file 1) ?:)
+ (setq file (concat dir-sep-string
+ "drive_"
+ (char-to-string (downcase (aref file 0)))
+ (if (eq (aref file 2) directory-sep-char)
+ ""
+ dir-sep-string)
+ (substring file 2)))))
+ ;; 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).
(defvar backup-extract-version-start)
;; This is used in various files.
-;; The usage of bv-length is not very clean,
-;; but I can't see a good alternative,
-;; so as of now I am leaving it alone.
+;; 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
(file-error nil))
(set-buffer-auto-saved))))
-(defvar after-save-hook nil
- "Normal hook that is run after a buffer is saved to its file.")
+(defvar auto-save-hook nil
+ "Normal hook run just before auto-saving.")
+
+(defcustom after-save-hook nil
+ "Normal hook that is run after a buffer is saved to its file."
+ :options '(executable-make-buffer-file-executable-if-script-p)
+ :type 'hook
+ :group 'files)
(defvar save-buffer-coding-system nil
"If non-nil, use this coding system for saving the buffer.
(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)))
(cond ((and tempsetmodes (not setmodes))
;; Change the mode back, after writing.
(setq setmodes (file-modes buffer-file-name))
- (set-file-modes buffer-file-name 511)))
+ (set-file-modes buffer-file-name (logior setmodes 128))))
(write-region (point-min) (point-max)
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))
(defvar revert-buffer-insert-file-contents-function nil
"Function to use to insert contents when reverting this buffer.
Gets two args, first the nominal file name to use,
-and second, t if reading the auto-save file.")
+and second, t if reading the auto-save file.
+
+The function you specify is responsible for updating (or preserving) point.")
(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
+all. (The local variable `revert-without-query', if non-nil, prevents
confirmation.)
Optional third argument PRESERVE-MODES non-nil means don't alter
(interactive (list (not current-prefix-arg)))
(if revert-buffer-function
(funcall revert-buffer-function ignore-auto noconfirm)
- (let* ((opoint (point))
- (auto-save-p (and (not ignore-auto)
+ (let* ((auto-save-p (and (not ignore-auto)
(recent-auto-save-p)
buffer-auto-save-file-name
(file-readable-p buffer-auto-save-file-name)
;; any code conversion.
(if auto-save-p 'no-conversion
coding-system-for-read)))
+ ;; Note that this preserves point in an intelligent way.
(insert-file-contents file-name (not auto-save-p)
nil nil t))))
- (goto-char (min opoint (point-max)))
;; Recompute the truename in case changes in symlinks
;; have changed the truename.
(setq buffer-file-truename
(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)
+ ;; Keep the current buffer-file-coding-system.
+ (coding-system buffer-file-coding-system)
;; Auto-saved file shoule be read without any code conversion.
(coding-system-for-read 'no-conversion))
(erase-buffer)
- (insert-file-contents file-name nil))
+ (insert-file-contents file-name nil)
+ (set-buffer-file-coding-system coding-system))
(after-find-file nil nil t))
(t (error "Recover-file cancelled")))))
(interactive)
(if (null auto-save-list-file-prefix)
(error "You set `auto-save-list-file-prefix' to disable making session files"))
+ (let ((dir (file-name-directory auto-save-list-file-prefix)))
+ (unless (file-directory-p dir)
+ (make-directory dir t)))
(let ((ls-lisp-support-shell-wildcards t))
(dired (concat auto-save-list-file-prefix "*")
(concat dired-listing-switches "t")))
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)
;; A list of all dirs that DIRPART specifies.
;; This can be more than one dir
;; if DIRPART contains wildcards.
- (dirs (if (and dirpart (string-match "[[.*+\\^$?]" dirpart))
+ (dirs (if (and dirpart (string-match "[[*?]" dirpart))
(mapcar 'file-name-as-directory
(file-expand-wildcards (directory-file-name dirpart)))
(list dirpart)))
(when (or (null (car dirs)) ; Possible if DIRPART is not wild.
(file-directory-p (directory-file-name (car dirs))))
(let ((this-dir-contents
- (directory-files (or (car dirs) ".") full
- (wildcard-to-regexp nondir))))
+ ;; Filter out "." and ".."
+ (delq nil
+ (mapcar #'(lambda (name)
+ (unless (string-match "\\`\\.\\.?\\'"
+ (file-name-nondirectory name))
+ name))
+ (directory-files (or (car dirs) ".") full
+ (wildcard-to-regexp nondir))))))
(setq contents
(nconc
(if (and (car dirs) (not full))
(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