;;; files.el --- file input and output commands for Emacs
-;; Copyright (C) 1985, 86, 87, 92, 93,
-;; 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 86, 87, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002
+;;; Free Software Foundation, Inc.
;; Maintainer: FSF
:group 'abbrev
:group 'find-file)
-;;; Turn off backup files on VMS since it has version numbers.
+;; Turn off backup files on VMS since it has version numbers.
(defcustom make-backup-files (not (eq system-type 'vax-vms))
"*Non-nil means make a backup of a file the first time it is saved.
This can be done by renaming the file or by copying.
: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 (- (length temporary-file-directory)))))
- (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 (- (length small-temporary-file-directory)))))))))
-
(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.")
(defvar buffer-file-numbers-unique (not (memq system-type '(windows-nt)))
"Non-nil means that buffer-file-number uniquely identifies files.")
+(defvar buffer-file-read-only nil
+ "Non-nil if visited file was read-only when visited.")
+(make-variable-buffer-local 'buffer-file-read-only)
+
+(defcustom temporary-file-directory
+ (file-name-as-directory
+ (cond ((memq system-type '(ms-dos windows-nt))
+ (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp"))
+ ((memq system-type '(vax-vms axp-vms))
+ (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:"))
+ (t
+ (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp"))))
+ "The directory for writing temporary files."
+ :group 'files
+ :type 'directory)
+
+(defcustom 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."
+ :group 'files
+ :type '(choice (const nil) directory))
+
+;; The system null device. (Should reference NULL_DEVICE from C.)
+(defvar null-device "/dev/null" "The system null device.")
+
(defvar file-name-invalid-regexp
(cond ((and (eq system-type 'ms-dos) (not (msdos-long-file-names)))
(concat "^\\([^A-Z[-`a-z]\\|..+\\)?:\\|" ; colon except after drive
:group 'auto-save)
(defcustom auto-save-file-name-transforms
- '(("\\`/[^/]*:\\(.+/\\)*\\(.*\\)" "/tmp/\\2"))
+ `(("\\`/[^/]*:\\(.+/\\)*\\(.*\\)"
+ ;; Don't put "\\2" inside expand-file-name, since it will be
+ ;; transformed to "/2" on DOS/Windows.
+ ,(concat temporary-file-directory "\\2") t))
"*Transforms to apply to buffer file name before making auto-save file name.
-Each transform is a list (REGEXP REPLACEMENT):
+Each transform is a list (REGEXP REPLACEMENT UNIQUIFY):
REGEXP is a regular expression to match against the file name.
If it matches, `replace-match' is used to replace the
matching part with REPLACEMENT.
+If the optional element UNIQUIFY is non-nil, the auto-save file name is
+constructed by taking the directory part of the replaced file-name,
+concatenated with the buffer file name with all directory separators
+changed to `!' to prevent clashes. This will not work
+correctly if your filesystem truncates the resulting name.
+
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."
+The default value is set up to put the auto-save file into the
+temporary directory (see the variable `temporary-file-directory') for
+editing a remote file.
+
+On MS-DOS filesystems without long names this variable is always
+ignored."
:group 'auto-save
- :type '(repeat (list (string :tag "Regexp") (string :tag "Replacement")))
+ :type '(repeat (list (string :tag "Regexp") (string :tag "Replacement")
+ (boolean :tag "Uniquify")))
:version "21.1")
-(defcustom save-abbrevs nil
+(defcustom save-abbrevs t
"*Non-nil means save word abbrevs too when files are saved.
-Loading an abbrev file sets this to t."
- :type 'boolean
+If `silently', don't ask the user before saving."
+ :type '(choice (const t) (const nil) (const silently))
:group 'abbrev)
(defcustom find-file-run-dired t
(defvar view-read-only nil
"*Non-nil means buffers visiting files read-only, do it in view mode.")
-(defvar temporary-file-directory
- (file-name-as-directory
- (cond ((memq system-type '(ms-dos windows-nt))
- (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp"))
- ((memq system-type '(vax-vms axp-vms))
- (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:"))
- (t
- (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.")
-
(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."
that really does change some file names to canonicalize certain
patterns and to guarantee valid names."
filename)
+
+(defun read-directory-name (prompt &optional dir default-dirname mustmatch initial)
+ "Read directory name, prompting with PROMPT and completing in directory DIR.
+Value is not expanded---you must call `expand-file-name' yourself.
+Default name to DEFAULT-DIRNAME if user enters a null string.
+ (If DEFAULT-DIRNAME is omitted, the current buffer's directory is used,
+ except that if INITIAL is specified, that combined with DIR is used.)
+Fourth arg MUSTMATCH non-nil means require existing directory's name.
+ Non-nil and non-t means also require confirmation after completion.
+Fifth arg INITIAL specifies text to start with.
+DIR defaults to current buffer's directory default."
+ (unless dir
+ (setq dir default-directory))
+ (unless default-dirname
+ (setq default-dirname
+ (if initial (concat dir initial) default-directory)))
+ (read-file-name prompt dir default-dirname mustmatch initial
+ 'file-directory-p))
+
\f
(defun pwd ()
"Show the current default directory."
(defvar cd-path nil
"Value of the CDPATH environment variable, as a list.
-Not actually set up until the first time you you use it.")
+Not actually set up until the first time you use it.")
(defun parse-colon-path (cd-path)
"Explode a colon-separated search path into a list of directory names.
If your environment includes a `CDPATH' variable, try each one of that
colon-separated list of directories when resolving a relative directory name."
(interactive
- (list (read-file-name "Change default directory: "
+ (list (read-directory-name "Change default directory: "
default-directory default-directory
(and (member cd-path '(nil ("./")))
(null (getenv "CDPATH"))))))
(defun load-file (file)
"Load the Lisp file named FILE."
- (interactive "fLoad file: ")
- (let ((completion-ignored-extensions
- (delete ".elc" completion-ignored-extensions)))
- (load (expand-file-name file) nil nil t)))
+ ;; This is a case where .elc makes a lot of sense.
+ (interactive (list (let ((completion-ignored-extensions
+ (remove ".elc" completion-ignored-extensions)))
+ (read-file-name "Load file: "))))
+ (load (expand-file-name file) nil nil t))
+
+(defun locate-file (filename path &optional suffixes predicate)
+ "Search for FILENAME through PATH.
+If SUFFIXES is non-nil, it should be a list of suffixes to append to
+file name when searching. If SUFFIXES is nil, it is equivalent to '(\"\").
+If non-nil, PREDICATE is used instead of `file-readable-p'.
+PREDICATE can also be an integer to pass to the `access' system call,
+in which case file-name handlers are ignored. This usage is deprecated.
+
+For compatibility, PREDICATE can also be one of the symbols
+`executable', `readable', `writable', or `exists', or a list of
+one or more of those symbols."
+ (if (and predicate (symbolp predicate) (not (functionp predicate)))
+ (setq predicate (list predicate)))
+ (when (and (consp predicate) (not (functionp predicate)))
+ (setq predicate
+ (logior (if (memq 'executable predicate) 1 0)
+ (if (memq 'writable predicate) 2 0)
+ (if (memq 'readable predicate) 4 0))))
+ (locate-file-internal filename path suffixes predicate))
+
+(defun locate-file-completion (string path-and-suffixes action)
+ "Do completion for file names passed to `locate-file'.
+PATH-AND-SUFFIXES is a pair of lists (DIRECTORIES . SUFFIXES)."
+ (if (file-name-absolute-p string)
+ (read-file-name-internal string nil action)
+ (let ((names nil)
+ (suffix (concat (regexp-opt (cdr path-and-suffixes) t) "\\'"))
+ (string-dir (file-name-directory string)))
+ (dolist (dir (car path-and-suffixes))
+ (if string-dir (setq dir (expand-file-name string-dir dir)))
+ (when (file-directory-p dir)
+ (dolist (file (file-name-all-completions
+ (file-name-nondirectory string) dir))
+ (push (if string-dir (concat string-dir file) file) names)
+ (when (string-match suffix file)
+ (setq file (substring file 0 (match-beginning 0)))
+ (push (if string-dir (concat string-dir file) file) names)))))
+ (if action
+ (all-completions string (mapcar 'list names))
+ (try-completion string (mapcar 'list names))))))
(defun load-library (library)
"Load the library named LIBRARY.
This is an interface to the function `load'."
- (interactive "sLoad library: ")
+ (interactive
+ (list (completing-read "Load library: "
+ 'locate-file-completion
+ (cons load-path load-suffixes))))
(load library))
(defun file-local-copy (file)
(defun switch-to-buffer-other-window (buffer &optional norecord)
"Select buffer BUFFER in another window.
Optional second arg NORECORD non-nil means
-do not put this buffer at the front of the list of recently selected ones."
+do not put this buffer at the front of the list of recently selected ones.
+
+This uses the function `display-buffer' as a subroutine; see its
+documentation for additional customization information."
(interactive "BSwitch to buffer in other window: ")
(let ((pop-up-windows t))
(pop-to-buffer buffer t norecord)))
(defun switch-to-buffer-other-frame (buffer &optional norecord)
"Switch to buffer BUFFER in another frame.
Optional second arg NORECORD non-nil means
-do not put this buffer at the front of the list of recently selected ones."
+do not put this buffer at the front of the list of recently selected ones.
+
+This uses the function `display-buffer' as a subroutine; see its
+documentation for additional customization information."
(interactive "BSwitch to buffer in other frame: ")
(let ((pop-up-frames t))
(pop-to-buffer buffer t norecord)
(raise-frame (window-frame (selected-window)))))
+(defvar find-file-default nil
+ "Used within `find-file-read-args'.")
+
+(defun find-file-read-args (prompt)
+ (list (let ((find-file-default
+ (and buffer-file-name
+ (abbreviate-file-name buffer-file-name)))
+ (munge-default-fun
+ (lambda ()
+ (setq minibuffer-default find-file-default)
+ ;; Clear out this hook so it does not interfere
+ ;; with any recursive minibuffer usage.
+ (pop minibuffer-setup-hook)))
+ (minibuffer-setup-hook
+ minibuffer-setup-hook))
+ (add-hook 'minibuffer-setup-hook munge-default-fun)
+ (read-file-name prompt nil default-directory))
+ current-prefix-arg))
+
(defun find-file (filename &optional wildcards)
"Edit file FILENAME.
Switch to a buffer visiting file FILENAME,
creating one if none already exists.
+Interactively, the default if you just type RET is the current directory,
+but the visited file name is available through the minibuffer history:
+type M-n to pull it into the minibuffer.
+
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")
+ (interactive
+ (find-file-read-args "Find file: "))
(let ((value (find-file-noselect filename nil nil wildcards)))
(if (listp value)
(mapcar 'switch-to-buffer (nreverse value))
"Edit file FILENAME, in another window.
May create a new window, or reuse an existing one.
See the function `display-buffer'.
+
+Interactively, the default if you just type RET is the current directory,
+but the visited file name is available through the minibuffer history:
+type M-n to pull it into the minibuffer.
+
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")
+ (interactive (find-file-read-args "FFind file in other window: "))
(let ((value (find-file-noselect filename nil nil wildcards)))
(if (listp value)
(progn
"Edit file FILENAME, in another frame.
May create a new frame, or reuse an existing one.
See the function `display-buffer'.
+
+Interactively, the default if you just type RET is the current directory,
+but the visited file name is available through the minibuffer history:
+type M-n to pull it into the minibuffer.
+
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")
+ (interactive (find-file-read-args "FFind file in other frame: "))
(let ((value (find-file-noselect filename nil nil wildcards)))
(if (listp value)
(progn
(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")
+ (interactive (find-file-read-args "fFind file read-only: "))
(find-file filename wildcards)
(toggle-read-only 1)
(current-buffer))
"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: \np")
+ (interactive (find-file-read-args "fFind file read-only other window: "))
(find-file-other-window filename wildcards)
(toggle-read-only 1)
(current-buffer))
"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: \np")
+ (interactive (find-file-read-args "fFind file read-only other frame: "))
(find-file-other-frame filename wildcards)
(toggle-read-only 1)
(current-buffer))
(setq found (car list))))
(setq list (cdr list)))
found)
- (let ((number (nthcdr 10 (file-attributes truename)))
- (list (buffer-list)) found)
+ (let* ((attributes (file-attributes truename))
+ (number (nthcdr 10 attributes))
+ (list (buffer-list)) found)
(and buffer-file-numbers-unique
number
(while (and (not found) list)
- (save-excursion
- (set-buffer (car list))
+ (with-current-buffer (car list)
(if (and buffer-file-name
(equal buffer-file-number number)
;; Verify this buffer's file number
;; still belongs to its file.
(file-exists-p buffer-file-name)
- (equal (nthcdr 10 (file-attributes buffer-file-name))
- number))
+ (equal (file-attributes buffer-file-name)
+ attributes))
(setq found (car list))))
(setq list (cdr list))))
found))))
:version "20.4"
:type 'boolean)
+(defcustom find-file-suppress-same-file-warnings nil
+ "*Non-nil means suppress warning messages for symlinked files.
+When nil, Emacs prints a warning when visiting a file that is already
+visited, but with a different name. Setting this option to t
+suppresses this warning."
+ :group 'files
+ :version "21.1"
+ :type 'boolean)
+
(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
(find-file-wildcards nil))
(if (null files)
(find-file-noselect filename)
- (car (mapcar #'find-file-noselect files))))
+ (mapcar #'find-file-noselect files)))
(let* ((buf (get-file-buffer filename))
(truename (abbreviate-file-name (file-truename filename)))
(number (nthcdr 10 (file-attributes truename)))
(if other
(progn
(or nowarn
+ find-file-suppress-same-file-warnings
(string-equal filename (buffer-file-name other))
(message "%s and %s are the same file"
filename (buffer-file-name other)))
(with-current-buffer buf
(revert-buffer t t)))))
(with-current-buffer buf
- (when (not (eq (not (null rawfile))
- (not (null find-file-literally))))
+
+ ;; Check if a formerly read-only file has become
+ ;; 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)
+ (eq read-only buffer-read-only))
+ (when (or nowarn
+ (let ((question
+ (format "File %s is %s on disk. Change buffer mode? "
+ buffer-file-name
+ (if read-only "read-only" "writable"))))
+ (y-or-n-p question)))
+ (setq buffer-read-only read-only)))
+ (setq buffer-file-read-only read-only))
+
+ (when (and (not (eq (not (null rawfile))
+ (not (null find-file-literally))))
+ ;; It is confusing to ask whether to visit
+ ;; non-literally if they have the file in
+ ;; hexl-mode.
+ (not (eq major-mode 'hexl-mode)))
(if (buffer-modified-p)
(if (y-or-n-p (if rawfile
"Save file and revisit literally? "
"Like `insert-file-contents', but only reads in the file literally.
A buffer may be modified in several ways after reading into the buffer,
to Emacs features such as format decoding, character code
-conversion, find-file-hooks, automatic uncompression, etc.
+conversion, `find-file-hooks', automatic uncompression, etc.
This function ensures that none of these modifications will take place."
(let ((format-alist nil)
(after-insert-file-functions nil)
(coding-system-for-read 'no-conversion)
(coding-system-for-write 'no-conversion)
- (jka-compr-compression-info-list nil)
(find-buffer-file-type-function
(if (fboundp 'find-buffer-file-type)
(symbol-function 'find-buffer-file-type)
- nil)))
+ nil))
+ (inhibit-file-name-handlers '(jka-compr-handler image-file-handler))
+ (inhibit-file-name-operation 'insert-file-contents))
(unwind-protect
(progn
(fset 'find-buffer-file-type (lambda (filename) t))
and multibyte characters are disabled in the resulting buffer.
The major mode used is Fundamental mode regardless of the file name,
and local variable specifications in the file are ignored.
-Automatic uncompression is also disabled.
+Automatic uncompression and adding a newline at the end of the
+file due to `require-final-newline' is also disabled.
You cannot absolutely rely on this function to result in
visiting the file literally. If Emacs already has a buffer
nil
(let* (not-serious
(msg
- (cond ((and error (file-attributes buffer-file-name))
- (setq buffer-read-only t)
- "File exists, but cannot be read")
- ((not buffer-read-only)
- (if (and warn
- ;; 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))
- (setq not-serious t)
- (if error "(New file)" nil)))
- ((not error)
- (setq not-serious t)
- "Note: file is write protected")
- ((file-attributes (directory-file-name default-directory))
- "File not found and directory write-protected")
- ((file-exists-p (file-name-directory buffer-file-name))
- (setq buffer-read-only nil))
- (t
- (setq buffer-read-only nil)
- (if (file-exists-p (file-name-directory (directory-file-name (file-name-directory buffer-file-name))))
- "Use M-x make-directory RET RET to create the directory"
- "Use C-u M-x make-directory RET RET to create directory and its parents")))))
- (if msg
- (progn
- (message msg)
- (or not-serious (sit-for 1 nil t)))))
- (if (and auto-save-default (not noauto))
- (auto-save-mode t)))
+ (cond
+ ((not warn) nil)
+ ((and error (file-attributes buffer-file-name))
+ (setq buffer-read-only t)
+ "File exists, but cannot be read")
+ ((not buffer-read-only)
+ (if (and warn
+ ;; 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))
+ (setq not-serious t)
+ (if error "(New file)" nil)))
+ ((not error)
+ (setq not-serious t)
+ "Note: file is write protected")
+ ((file-attributes (directory-file-name default-directory))
+ "File not found and directory write-protected")
+ ((file-exists-p (file-name-directory buffer-file-name))
+ (setq buffer-read-only nil))
+ (t
+ (setq buffer-read-only nil)
+ (if (file-exists-p (file-name-directory (directory-file-name (file-name-directory buffer-file-name))))
+ "Use M-x make-directory RET RET to create the directory"
+ "Use C-u M-x make-directory RET RET to create directory and its parents")))))
+ (when msg
+ (message "%s" msg)
+ (or not-serious (sit-for 1 nil t))))
+ (when (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))
+ (when (backup-file-name-p buffer-file-name)
+ (setq buffer-read-only t))
+ (unless nomodes
+ (when (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)))
- (view-mode-enter))
+ (when (and buffer-read-only
+ view-read-only
+ (not (eq (get major-mode 'mode-class) 'special)))
+ (view-mode-enter))
(run-hooks 'find-file-hooks)))
(defun normal-mode (&optional find-file)
(mapc
(lambda (elt)
(cons (purecopy (car elt)) (cdr elt)))
- '(("\\.te?xt\\'" . text-mode)
+ '(("\\.in\\'" nil t)
+ ("\\.te?xt\\'" . text-mode)
("\\.c\\'" . c-mode)
("\\.h\\'" . c-mode)
("\\.tex\\'" . tex-mode)
("\\.p\\'" . pascal-mode)
("\\.pas\\'" . pascal-mode)
("\\.ad[abs]\\'" . ada-mode)
- ("\\.\\([pP][Llm]\\|al\\)\\'" . perl-mode)
+ ("\\.ad[bs].dg\\'" . ada-mode)
+ ("\\.\\([pP]\\([Llm]\\|erl\\)\\|al\\)\\'" . perl-mode)
("\\.s?html?\\'" . html-mode)
("\\.cc\\'" . c++-mode)
("\\.hh\\'" . c++-mode)
("\\.m\\'" . objc-mode)
("\\.java\\'" . java-mode)
("\\.mk\\'" . makefile-mode)
- ("\\(M\\|m\\|GNUm\\)akefile\\(\\.in\\)?\\'" . makefile-mode)
+ ("\\(M\\|m\\|GNUm\\)akefile\\'" . makefile-mode)
("\\.am\\'" . makefile-mode) ;For Automake.
-;;; Less common extensions come here
-;;; so more common ones above are found faster.
+ ;; Less common extensions come here
+ ;; so more common ones above are found faster.
("\\.texinfo\\'" . texinfo-mode)
("\\.te?xi\\'" . texinfo-mode)
("\\.s\\'" . asm-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$" . sh-mode)
+ ("\\.m?spec\\'" . sh-mode)
("\\.mm\\'" . nroff-mode)
("\\.me\\'" . nroff-mode)
("\\.ms\\'" . nroff-mode)
("\\.man\\'" . nroff-mode)
("\\.\\(u?lpc\\|pike\\|pmod\\)\\'" . pike-mode)
-;;; The following should come after the ChangeLog pattern
-;;; for the sake of ChangeLog.1, etc.
-;;; and after the .scm.[0-9] pattern too.
- ("\\.[12345678]\\'" . nroff-mode)
("\\.TeX\\'" . tex-mode)
("\\.sty\\'" . latex-mode)
("\\.cls\\'" . latex-mode) ;LaTeX 2e class
("\\.sim\\'" . simula-mode)
("\\.mss\\'" . scribe-mode)
("\\.f90\\'" . f90-mode)
+ ("\\.f95\\'" . f90-mode)
+ ("\\.indent\\.pro\\'" . fundamental-mode) ; to avoid idlwave-mode
("\\.pro\\'" . idlwave-mode)
("\\.lsp\\'" . lisp-mode)
("\\.awk\\'" . awk-mode)
("[:/]_emacs\\'" . emacs-lisp-mode)
("/crontab\\.X*[0-9]+\\'" . shell-script-mode)
("\\.ml\\'" . lisp-mode)
- ("\\.asn$" . snmp-mode)
- ("\\.mib$" . snmp-mode)
- ("\\.smi$" . snmp-mode)
- ("\\.as2$" . snmpv2-mode)
- ("\\.mi2$" . snmpv2-mode)
- ("\\.sm2$" . snmpv2-mode)
+ ("\\.\\(asn\\|mib\\|smi\\)\\'" . snmp-mode)
+ ("\\.\\(as\\|mi\\|sm\\)2\\'" . snmpv2-mode)
("\\.\\(diffs?\\|patch\\|rej\\)\\'" . diff-mode)
- ("\\.[eE]?[pP][sS]$" . ps-mode)
- ("configure\\.in\\'" . autoconf-mode)
+ ("\\.\\(dif\\|pat\\)\\'" . diff-mode) ; for MSDOG
+ ("\\.[eE]?[pP][sS]\\'" . ps-mode)
+ ("configure\\.\\(ac\\|in\\)\\'" . autoconf-mode)
("BROWSE\\'" . ebrowse-tree-mode)
- ("\\.ebrowse\\'" . ebrowse-tree-mode)))
+ ("\\.ebrowse\\'" . ebrowse-tree-mode)
+ ("#\\*mail\\*" . mail-mode)
+ ;; Get rid of any trailing .n.m and try again.
+ ;; This is for files saved by cvs-merge that look like .#<file>.<rev>
+ ;; or .#<file>.<rev>-<rev> or VC's <file>.~<rev>~.
+ ;; Using mode nil rather than `ignore' would let the search continue
+ ;; through this list (with the shortened name) rather than start over.
+ ("\\.~?[0-9]+\\.[0-9][-.0-9]*~?\\'" ignore t)
+ ;; The following should come after the ChangeLog pattern
+ ;; for the sake of ChangeLog.1, etc.
+ ;; and after the .scm.[0-9] and CVS' <file>.<rev> patterns too.
+ ("\\.[1-9]\\'" . nroff-mode)
+ ("\\.g\\'" . antlr-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.)
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 auto-mode-interpreter-regexp
+(defvar auto-mode-interpreter-regexp
"#![ \t]?\\([^ \t\n]*\
/bin/env[ \t]\\)?\\([^ \t\n]+\\)"
"Regular expression matching interpreters, for file mode determination.
then we do not set anything but the major mode,
and we don't even do that unless it would come from the file name."
;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*-
- (let (beg end done modes)
+ (let (end done modes)
(save-excursion
(goto-char (point-min))
(skip-chars-forward " \t\n")
(and enable-local-variables
- ;; Don't look for -*- if this file name matches any
- ;; of the regexps in inhibit-first-line-modes-regexps.
- (let ((temp inhibit-first-line-modes-regexps)
- (name (if buffer-file-name
- (file-name-sans-versions buffer-file-name)
- (buffer-name))))
- (while (let ((sufs inhibit-first-line-modes-suffixes))
- (while (and sufs (not (string-match (car sufs) name)))
- (setq sufs (cdr sufs)))
- sufs)
- (setq name (substring name 0 (match-beginning 0))))
- (while (and temp
- (not (string-match (car temp) name)))
- (setq temp (cdr temp)))
- (not temp))
- (search-forward "-*-" (save-excursion
- ;; If the file begins with "#!"
- ;; (exec interpreter magic), look
- ;; for mode frobs in the first two
- ;; lines. You cannot necessarily
- ;; put them in the first line of
- ;; such a file without screwing up
- ;; the interpreter invocation.
- (end-of-line (and (looking-at "^#!") 2))
- (point)) t)
- (progn
- (skip-chars-forward " \t")
- (setq beg (point))
- (search-forward "-*-"
- (save-excursion (end-of-line) (point))
- t))
- (progn
- (forward-char -3)
- (skip-chars-backward " \t")
- (setq end (point))
- (goto-char beg)
- (if (save-excursion (search-forward ":" end t))
- ;; Find all specifications for the `mode:' variable
- ;; and execute them left to right.
- (while (let ((case-fold-search t))
- (or (and (looking-at "mode:")
- (goto-char (match-end 0)))
- (re-search-forward "[ \t;]mode:" end t)))
- (skip-chars-forward " \t")
- (setq beg (point))
+ (setq end (set-auto-mode-1))
+ (if (save-excursion (search-forward ":" end t))
+ ;; Find all specifications for the `mode:' variable
+ ;; and execute them left to right.
+ (while (let ((case-fold-search t))
+ (or (and (looking-at "mode:")
+ (goto-char (match-end 0)))
+ (re-search-forward "[ \t;]mode:" end t)))
+ (skip-chars-forward " \t")
+ (let ((beg (point)))
(if (search-forward ";" end t)
(forward-char -1)
(goto-char end))
(skip-chars-backward " \t")
- (setq modes (cons (intern (concat (downcase (buffer-substring beg (point))) "-mode"))
- modes)))
- ;; Simple -*-MODE-*- case.
- (setq modes (cons (intern (concat (downcase (buffer-substring beg end))
- "-mode"))
- modes))))))
+ (push (intern (concat (downcase (buffer-substring beg (point))) "-mode"))
+ modes)))
+ ;; Simple -*-MODE-*- case.
+ (push (intern (concat (downcase (buffer-substring (point) end))
+ "-mode"))
+ modes))))
;; If we found modes to use, invoke them now,
;; outside the save-excursion.
- (when modes
- (unless just-from-file-name
- (mapc 'funcall (nreverse modes)))
- (setq done t))
+ (unless just-from-file-name
+ (dolist (mode (nreverse modes))
+ (if (not (functionp mode))
+ (message "Ignoring unknown mode `%s'" mode)
+ (setq done t)
+ (funcall mode))))
;; If we didn't find a mode from a -*- line, try using the file name.
(if (and (not done) buffer-file-name)
(let ((name buffer-file-name)
(if elt
(funcall (cdr elt))))))))))))
+
+(defun set-auto-mode-1 ()
+ "Find the -*- spec in the buffer.
+Call with point at the place to start searching from.
+If one is found, set point to the beginning
+and return the position of the end.
+Otherwise, return nil; point may be changed."
+ (let (beg end)
+ (and
+ ;; Don't look for -*- if this file name matches any
+ ;; of the regexps in inhibit-first-line-modes-regexps.
+ (let ((temp inhibit-first-line-modes-regexps)
+ (name (if buffer-file-name
+ (file-name-sans-versions buffer-file-name)
+ (buffer-name))))
+ (while (let ((sufs inhibit-first-line-modes-suffixes))
+ (while (and sufs (not (string-match (car sufs) name)))
+ (setq sufs (cdr sufs)))
+ sufs)
+ (setq name (substring name 0 (match-beginning 0))))
+ (while (and temp
+ (not (string-match (car temp) name)))
+ (setq temp (cdr temp)))
+ (not temp))
+
+ (search-forward "-*-" (save-excursion
+ ;; If the file begins with "#!"
+ ;; (exec interpreter magic), look
+ ;; for mode frobs in the first two
+ ;; lines. You cannot necessarily
+ ;; put them in the first line of
+ ;; such a file without screwing up
+ ;; the interpreter invocation.
+ (end-of-line (and (looking-at "^#!") 2))
+ (point)) t)
+ (progn
+ (skip-chars-forward " \t")
+ (setq beg (point))
+ (search-forward "-*-"
+ (save-excursion (end-of-line) (point))
+ t))
+ (progn
+ (forward-char -3)
+ (skip-chars-backward " \t")
+ (setq end (point))
+ (goto-char beg)
+ end))))
+
(defun hack-local-variables-prop-line ()
"Set local variables specified in the -*- line.
Ignore any specification for `mode:' and `coding:';
(save-excursion
(goto-char (point-min))
(let ((result nil)
- (end (save-excursion (end-of-line (and (looking-at "^#!") 2)) (point)))
+ (end (set-auto-mode-1))
(enable-local-variables
(and local-enable-local-variables enable-local-variables)))
;; Parse the -*- line into the `result' alist.
- (cond ((not (search-forward "-*-" end t))
- ;; doesn't have one.
+ (cond ((not end)
nil)
((looking-at "[ \t]*\\([^ \t\n\r:;]+\\)\\([ \t]*-\\*-\\)")
;; Simple form: "-*- MODENAME -*-". Already handled.
(t
;; Hairy form: '-*-' [ <variable> ':' <value> ';' ]* '-*-'
;; (last ";" is optional).
- (save-excursion
- (if (search-forward "-*-" end t)
- (setq end (- (point) 3))
- (error "-*- not terminated before end of line")))
(while (< (point) end)
(or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*")
(error "Malformed -*- line"))
(put 'ignored-local-variables 'risky-local-variable t)
(put 'eval 'risky-local-variable t)
(put 'file-name-handler-alist 'risky-local-variable t)
+(put 'minor-mode-alist 'risky-local-variable t)
(put 'minor-mode-map-alist 'risky-local-variable t)
+(put 'minor-mode-overriding-map-alist 'risky-local-variable t)
+(put 'overriding-local-map 'risky-local-variable t)
+(put 'overriding-terminal-local-map 'risky-local-variable t)
+(put 'auto-mode-alist 'risky-local-variable t)
(put 'after-load-alist 'risky-local-variable t)
(put 'buffer-file-name 'risky-local-variable t)
+(put 'buffer-undo-list 'risky-local-variable t)
(put 'buffer-auto-save-file-name 'risky-local-variable t)
(put 'buffer-file-truename 'risky-local-variable t)
+(put 'default-text-properties 'risky-local-variable t)
(put 'exec-path 'risky-local-variable t)
(put 'load-path 'risky-local-variable t)
(put 'exec-directory 'risky-local-variable t)
;; Don't wait for outline.el to be loaded, for the sake of outline-minor-mode.
(put 'outline-level 'risky-local-variable t)
(put 'rmail-output-file-alist 'risky-local-variable t)
+(put 'font-lock-defaults 'risky-local-variable t)
+(put 'special-display-buffer-names 'risky-local-variable t)
+(put 'frame-title-format 'risky-local-variable t)
+(put 'global-mode-string 'risky-local-variable t)
+(put 'header-line-format 'risky-local-variable t)
+(put 'icon-title-format 'risky-local-variable t)
+(put 'input-method-alist 'risky-local-variable t)
+(put 'format-alist 'risky-local-variable t)
+(put 'vc-mode 'risky-local-variable t)
+(put 'imenu-generic-expression 'risky-local-variable t)
+(put 'imenu-index-alist 'risky-local-variable t)
+(put 'standard-input 'risky-local-variable t)
+(put 'standard-output 'risky-local-variable t)
+(put 'unread-command-events 'risky-local-variable t)
+(put 'max-lisp-eval-depth 'risky-local-variable t)
+(put 'max-specpdl-size 'risky-local-variable t)
+(put 'mode-line-format 'risky-local-variable t)
+(put 'mode-line-modified 'risky-local-variable t)
+(put 'mode-line-mule-info 'risky-local-variable t)
+(put 'mode-line-buffer-identification 'risky-local-variable t)
+(put 'mode-line-modes 'risky-local-variable t)
+(put 'mode-line-position 'risky-local-variable t)
+(put 'display-time-string 'risky-local-variable t)
;; This one is safe because the user gets to check it before it is used.
(put 'compile-command 'safe-local-variable t)
(defun hack-one-local-variable (var val)
"\"Set\" one variable in a local variables spec.
-A few variable names are treated specially."
+A few patterns are specified so that any name which matches one
+is considered risky."
(cond ((eq var 'mode)
(funcall (intern (concat (downcase (symbol-name val))
"-mode"))))
;; Likewise for setting hook variables.
((or (get var 'risky-local-variable)
(and
- (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$"
+ (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$\\|font-lock-keywords$\\|font-lock-keywords-[0-9]+$\\|font-lock-syntactic-keywords$\\|-frame-alist$\\|-mode-alist$\\|-map$\\|-map-alist$"
(symbol-name var))
(not (get var 'safe-local-variable))))
;; Permit evalling a put of a harmless property.
(message "Ignoring `eval:' in the local variables list")))
;; Ordinary variable, really set it.
(t (make-local-variable var)
+ ;; Make sure the string has no text properties.
+ ;; Some text properties can get evaluated in various ways,
+ ;; so it is risky to put them on with a local variable list.
+ (if (stringp val)
+ (set-text-properties 0 (length val) nil val))
(set var val))))
\f
(setq backup-info (find-backup-file-name real-file-name)
backupname (car backup-info)
targets (cdr backup-info))
-;;; (if (file-directory-p buffer-file-name)
-;;; (error "Cannot save buffer in directory %s" buffer-file-name))
+ ;; (if (file-directory-p buffer-file-name)
+ ;; (error "Cannot save buffer in directory %s" buffer-file-name))
(if backup-info
(condition-case ()
(let ((delete-old-versions
(defun file-name-sans-extension (filename)
"Return FILENAME sans final \"extension\".
-The extension, in a file name, is the part that follows the last `.'."
+The extension, in a file name, is the part that follows the last `.',
+except that a leading `.', if any, doesn't count."
(save-match-data
(let ((file (file-name-sans-versions (file-name-nondirectory filename)))
directory)
- (if (string-match "\\.[^.]*\\'" file)
+ (if (and (string-match "\\.[^.]*\\'" file)
+ (not (eq 0 (match-beginning 0))))
(if (setq directory (file-name-directory filename))
(expand-file-name (substring file 0 (match-beginning 0))
directory)
(defun file-name-extension (filename &optional period)
"Return FILENAME's final \"extension\".
-The extension, in a file name, is the part that follows the last `.'.
+The extension, in a file name, is the part that follows the last `.',
+except that a leading `.', if any, doesn't count.
Return nil for extensionless file names such as `foo'.
Return the empty string for file names such as `foo.'.
the value is \"\"."
(save-match-data
(let ((file (file-name-sans-versions (file-name-nondirectory filename))))
- (if (string-match "\\.[^.]*\\'" file)
+ (if (and (string-match "\\.[^.]*\\'" file)
+ (not (eq 0 (match-beginning 0))))
(substring file (+ (match-beginning 0) (if period 0 1)))
(if period
"")))))
"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
+This could be buffer-local to do something special for specific
files. If you define it, you may need to change `backup-file-name-p'
and `file-name-sans-versions' too.
On MS-DOS filesystems without long names this variable is always
ignored."
:group 'backup
- :type '(repeat (cons (regexp :tag "Regexp macthing filename")
+ :type '(repeat (cons (regexp :tag "Regexp matching filename")
(directory :tag "Backup directory name"))))
+(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 (- (length temporary-file-directory)))))
+ (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 (- (length small-temporary-file-directory)))))))))
+
(defun make-backup-file-name (file)
"Create the non-numeric backup file name for FILE.
Normally this will just be the file's name with `~' appended.
(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 file (expand-file-name (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_"
;; 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)
+ (if (or (eq version-control 'never)
+ ;; We don't support numbered backups on plain MS-DOS
+ ;; when long file names are unavailable.
+ (and (eq system-type 'ms-dos)
+ (not (msdos-long-file-names))))
(list (make-backup-file-name fn))
(let* ((basic-name (make-backup-file-name-1 fn))
(base-versions (concat (file-name-nondirectory basic-name)
-1))
(file-error (setq possibilities nil)))
(if (not deserve-versions-p)
- (list (concat basic-name "~"))
+ (list (make-backup-file-name fn))
(cons (format "%s.~%d~" basic-name (1+ high-water-mark))
(if (and (> number-to-delete 0)
;; Delete nothing if there is overflow
(make-backup-files (or (and make-backup-files (not (eq args 0)))
(memq args '(16 64)))))
(and modp (memq args '(16 64)) (setq buffer-backed-up nil))
- (if (and modp large) (message "Saving file %s..." (buffer-file-name)))
+ (if (and modp large (buffer-file-name))
+ (message "Saving file %s..." (buffer-file-name)))
(basic-save-buffer)
(and modp (memq args '(4 64)) (setq buffer-backed-up nil))))
(widen)
(save-excursion
(and (> (point-max) 1)
+ (not find-file-literally)
(/= (char-after (1- (point-max))) ?\n)
(not (and (eq selective-display t)
(= (char-after (1- (point-max))) ?\r)))
(save-excursion
(goto-char (point-max))
(insert ?\n))))
+ ;; Support VC version backups.
+ (vc-before-save)
(or (run-hook-with-args-until-success 'write-contents-hooks)
(run-hook-with-args-until-success 'local-write-file-hooks)
(run-hook-with-args-until-success 'write-file-hooks)
;; delete the temp file.
(or succeed
(progn
- (delete-file tempname)
+ (condition-case nil
+ (delete-file tempname)
+ (file-error nil))
(set-visited-file-modtime old-modtime))))
;; Since we have created an entirely new file
;; and renamed it, make sure it gets the
(and save-abbrevs abbrevs-changed
(progn
(if (or arg
+ (eq save-abbrevs 'silently)
(y-or-n-p (format "Save abbrevs in %s? "
abbrev-file-name)))
(write-abbrev-file nil))
(let ((coding-system-for-read
;; Auto-saved file shoule be read without
;; any code conversion.
- (if auto-save-p 'no-conversion
+ (if auto-save-p 'emacs-mule-unix
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))))
+ (if preserve-modes
+ (let ((buffer-file-formats buffer-file-formats))
+ (insert-file-contents file-name (not auto-save-p)
+ nil nil t))
+ (insert-file-contents file-name (not auto-save-p)
+ nil nil t)))))
;; Recompute the truename in case changes in symlinks
;; have changed the truename.
(setq buffer-file-truename
(if (file-symlink-p file)
(setq switches (concat switches "L")))
(set-buffer standard-output)
- (insert-directory file switches)
- (insert-directory file-name switches))))
+ ;; Use insert-directory-safely, not insert-directory,
+ ;; because these files might not exist. In particular,
+ ;; FILE might not exist if the auto-save file was for
+ ;; a buffer that didn't visit a file, such as "*mail*".
+ ;; The code in v20.x called `ls' directly, so we need
+ ;; to emulate what `ls' did in that case.
+ (insert-directory-safely file switches)
+ (insert-directory-safely file-name switches))))
(yes-or-no-p (format "Recover auto save file %s? " file-name)))
(switch-to-buffer (find-file-noselect file t))
(let ((buffer-read-only nil)
;; 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))
+ (coding-system-for-read 'emacs-mule-unix))
(erase-buffer)
(insert-file-contents file-name nil)
(set-buffer-file-coding-system coding-system))
(if buffer-file-name
(let ((list auto-save-file-name-transforms)
(filename buffer-file-name)
- result)
+ result uniq)
;; 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)))
+ filename)
+ uniq (car (cddr (car list)))))
(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)
- "#")))
+ (if result
+ (if uniq
+ (setq filename (concat
+ (file-name-directory result)
+ (subst-char-in-string
+ directory-sep-char ?!
+ (replace-regexp-in-string "!" "!!"
+ filename))))
+ (setq filename result)))
+ (setq result
+ (if (and (eq system-type 'ms-dos)
+ (not (msdos-long-file-names)))
+ ;; We truncate the file name to DOS 8+3 limits
+ ;; before doing anything else, because the regexp
+ ;; passed to string-match below cannot handle
+ ;; extensions longer than 3 characters, multiple
+ ;; dots, and other atrocities.
+ (let ((fn (dos-8+3-filename
+ (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)
+ "#")))
+ ;; Make sure auto-save file names don't contain characters
+ ;; invalid for the underlying filesystem.
+ (if (and (memq system-type '(ms-dos windows-nt))
+ ;; Don't modify remote (ange-ftp) filenames
+ (not (string-match "^/\\w+@[-A-Za-z0-9._]+:" result)))
+ (convert-standard-filename result)
+ result))
;; Deal with buffers that don't have any associated files. (Mail
;; mode tends to create a good number of these.)
(let ((buffer-name (buffer-name))
- (limit 0))
+ (limit 0)
+ filename)
;; Eliminate all slashes and backslashes by
;; replacing them with sequences that start with %.
;; Quote % also, to keep distinct names distinct.
(setq buffer-name (replace-match replacement t t buffer-name))
(setq limit (1+ (match-end 0)))))
;; Generate the file name.
- (expand-file-name
- (format "#%s#%s#" buffer-name (make-temp-name ""))
- ;; Try a few alternative directories, to get one we can write it.
- (cond
- ((file-writable-p default-directory) default-directory)
- ((file-writable-p "/var/tmp/") "/var/tmp/")
- ("~/"))))))
+ (setq file-name
+ (make-temp-file
+ (let ((fname
+ (expand-file-name
+ (format "#%s#" buffer-name)
+ ;; Try a few alternative directories, to get one we can
+ ;; write it.
+ (cond
+ ((file-writable-p default-directory) default-directory)
+ ((file-writable-p "/var/tmp/") "/var/tmp/")
+ ("~/")))))
+ (if (and (memq system-type '(ms-dos windows-nt))
+ ;; Don't modify remote (ange-ftp) filenames
+ (not (string-match "^/\\w+@[-A-Za-z0-9._]+:" fname)))
+ ;; The call to convert-standard-filename is in case
+ ;; buffer-name includes characters not allowed by the
+ ;; DOS/Windows filesystems. make-temp-file writes to the
+ ;; file it creates, so we must fix the file name _before_
+ ;; make-temp-file is called.
+ (convert-standard-filename fname)
+ fname))
+ nil "#"))
+ ;; make-temp-file creates the file,
+ ;; but we don't want it to exist until we do an auto-save.
+ (condition-case ()
+ (delete-file file-name)
+ (file-error nil))
+ file-name)))
(defun auto-save-file-name-p (filename)
"Return non-nil if FILENAME can be yielded by `make-auto-save-file-name'.
relative to the current default directory, `default-directory'.
The file names returned are normally also relative to the current
default directory. However, if FULL is non-nil, they are absolute."
- (let* ((nondir (file-name-nondirectory pattern))
- (dirpart (file-name-directory pattern))
- ;; 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))
- (mapcar 'file-name-as-directory
- (file-expand-wildcards (directory-file-name dirpart)))
- (list dirpart)))
- contents)
- (while dirs
- (when (or (null (car dirs)) ; Possible if DIRPART is not wild.
- (file-directory-p (directory-file-name (car dirs))))
- (let ((this-dir-contents
- ;; 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))
- (mapcar (function (lambda (name) (concat (car dirs) name)))
- this-dir-contents)
- this-dir-contents)
- contents))))
- (setq dirs (cdr dirs)))
- contents))
+ (save-match-data
+ (let* ((nondir (file-name-nondirectory pattern))
+ (dirpart (file-name-directory pattern))
+ ;; 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))
+ (mapcar 'file-name-as-directory
+ (file-expand-wildcards (directory-file-name dirpart)))
+ (list dirpart)))
+ contents)
+ (while dirs
+ (when (or (null (car dirs)) ; Possible if DIRPART is not wild.
+ (file-directory-p (directory-file-name (car dirs))))
+ (let ((this-dir-contents
+ ;; 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))
+ (mapcar (function (lambda (name) (concat (car dirs) name)))
+ this-dir-contents)
+ this-dir-contents)
+ contents))))
+ (setq dirs (cdr dirs)))
+ contents)))
(defun list-directory (dirname &optional verbose)
"Display a list of files in or matching DIRNAME, a la `ls'.
nil default-directory nil)
pfx)))
(let ((switches (if verbose list-directory-verbose-switches
- list-directory-brief-switches)))
+ list-directory-brief-switches))
+ buffer)
(or dirname (setq dirname default-directory))
(setq dirname (expand-file-name dirname))
(with-output-to-temp-buffer "*Directory*"
+ (setq buffer standard-output)
(buffer-disable-undo standard-output)
(princ "Directory ")
(princ dirname)
(terpri)
(save-excursion
(set-buffer "*Directory*")
- (setq default-directory
- (if (file-directory-p dirname)
- (file-name-as-directory dirname)
- (file-name-directory dirname)))
(let ((wildcard (not (file-directory-p dirname))))
- (insert-directory dirname switches wildcard (not wildcard)))))))
+ (insert-directory dirname switches wildcard (not wildcard)))))
+ ;; Finishing with-output-to-temp-buffer seems to clobber default-directory.
+ (with-current-buffer buffer
+ (setq default-directory
+ (if (file-directory-p dirname)
+ (file-name-as-directory dirname)
+ (file-name-directory dirname))))))
(defun shell-quote-wildcard-pattern (pattern)
"Quote characters special to the shell in PATTERN, leave wildcards alone.
(substring pattern (match-beginning 0)))
beg (1+ (match-end 0)))))
pattern))))
-
+
(defvar insert-directory-program "ls"
"Absolute or relative name of the `ls' program used by `insert-directory'.")
+(defcustom directory-free-space-program "df"
+ "*Program to get the amount of free space on a file system.
+We assume the output has the format of `df'.
+The value of this variable must be just a command name or file name;
+if you want to specify options, use `directory-free-space-args'.
+
+A value of nil disables this feature.
+
+If the function `file-system-info' is defined, it is always used in
+preference to the program given by this variable."
+ :type '(choice (string :tag "Program") (const :tag "None" nil))
+ :group 'dired)
+
+(defcustom directory-free-space-args "-Pk"
+ "*Options to use when running `directory-free-space-program'."
+ :type 'string
+ :group 'dired)
+
+(defun get-free-disk-space (dir)
+ "Return the mount 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 infornmation
+fail.
+
+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
+ (zerop (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)))))))))
+
+
;; insert-directory
;; - must insert _exactly_one_line_ describing FILE if WILDCARD and
;; FULL-DIRECTORY-P is nil.
whose name is in the variable `insert-directory-program'.
If WILDCARD, it also runs the shell specified by `shell-file-name'."
;; We need the directory in order to find the right handler.
- (let* ((file (expand-file-name file))
- (handler (find-file-name-handler file 'insert-directory)))
+ (let ((handler (find-file-name-handler (expand-file-name file)
+ 'insert-directory)))
(if handler
(funcall handler 'insert-directory file switches
wildcard full-directory-p)
(if (eq system-type 'vax-vms)
(vms-read-directory file switches (current-buffer))
- (let* ((coding-system-for-read
- (and enable-multibyte-characters
- (or file-name-coding-system
- default-file-name-coding-system)))
- ;; This is to control encoding the arguments in call-process.
- (coding-system-for-write coding-system-for-read)
- (result
- (if wildcard
- ;; Run ls in the directory of the file pattern we asked for
- (let ((default-directory (file-name-directory file))
- (pattern (file-name-nondirectory file)))
- (call-process
- shell-file-name nil t nil
- "-c" (concat (if (memq system-type '(ms-dos windows-nt))
- ""
- "\\") ; Disregard Unix shell aliases!
- insert-directory-program
- " -d "
- (if (stringp switches)
- switches
- (mapconcat 'identity switches " "))
- " -- "
- ;; Quote some characters that have
- ;; special meanings in shells; but
- ;; don't quote the wildcards--we
- ;; want them to be special. We
- ;; also currently don't quote the
- ;; quoting characters in case
- ;; people want to use them
- ;; explicitly to quote wildcard
- ;; characters.
- (shell-quote-wildcard-pattern pattern))))
- ;; SunOS 4.1.3, SVr4 and others need the "." to list the
- ;; directory if FILE is a symbolic link.
- (apply 'call-process
- insert-directory-program nil t nil
- (append
- (if (listp switches) switches
- (unless (equal switches "")
- ;; Split the switches at any spaces so we can
- ;; pass separate options as separate args.
- (split-string switches)))
- ;; Avoid lossage if FILE starts with `-'.
- '("--")
- (progn
- (if (string-match "\\`~" file)
- (setq file (expand-file-name file)))
- (list
- (if full-directory-p
- (concat (file-name-as-directory file) ".")
- file))))))))
+ (let (result available)
+
+ ;; Read the actual directory using `insert-directory-program'.
+ ;; RESULT gets the status code.
+ (let ((coding-system-for-read
+ (and enable-multibyte-characters
+ (or file-name-coding-system
+ default-file-name-coding-system)))
+ ;; This is to control encoding the arguments in call-process.
+ (coding-system-for-write coding-system-for-read))
+ (setq result
+ (if wildcard
+ ;; Run ls in the directory part of the file pattern
+ ;; using the last component as argument.
+ (let ((default-directory
+ (if (file-name-absolute-p file)
+ (file-name-directory file)
+ (file-name-directory (expand-file-name file))))
+ (pattern (file-name-nondirectory file)))
+ (call-process
+ shell-file-name nil t nil
+ "-c"
+ (concat (if (memq system-type '(ms-dos windows-nt))
+ ""
+ "\\") ; Disregard Unix shell aliases!
+ insert-directory-program
+ " -d "
+ (if (stringp switches)
+ switches
+ (mapconcat 'identity switches " "))
+ " -- "
+ ;; Quote some characters that have
+ ;; special meanings in shells; but
+ ;; don't quote the wildcards--we want
+ ;; them to be special. We also
+ ;; currently don't quote the quoting
+ ;; characters in case people want to
+ ;; use them explicitly to quote
+ ;; wildcard characters.
+ (shell-quote-wildcard-pattern pattern))))
+ ;; SunOS 4.1.3, SVr4 and others need the "." to list the
+ ;; directory if FILE is a symbolic link.
+ (apply 'call-process
+ insert-directory-program nil t nil
+ (append
+ (if (listp switches) switches
+ (unless (equal switches "")
+ ;; Split the switches at any spaces so we can
+ ;; pass separate options as separate args.
+ (split-string switches)))
+ ;; Avoid lossage if FILE starts with `-'.
+ '("--")
+ (progn
+ (if (string-match "\\`~" file)
+ (setq file (expand-file-name file)))
+ (list
+ (if full-directory-p
+ (concat (file-name-as-directory file) ".")
+ file))))))))
+
+ ;; If `insert-directory-program' failed, signal an error.
(if (/= result 0)
- ;; We get here if `insert-directory-program' failed.
;; On non-Posix systems, we cannot open a directory, so
;; don't even try, because that will always result in
- ;; the ubiquitous "Access denied". Instead, show them
- ;; the `ls' command line and let them guess what went
- ;; wrong.
+ ;; the ubiquitous "Access denied". Instead, show the
+ ;; command line so the user can try to guess what went wrong.
(if (and (file-directory-p file)
(memq system-type '(ms-dos windows-nt)))
(error
(if (listp switches) (concat switches) switches)
file result)
;; Unix. Access the file to get a suitable error.
- (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))))
+ (access-file file "Reading directory")
+ (error "Listing directory failed but `access-file' worked")))
+
+ ;; Try to insert the amount of free space.
+ (save-excursion
+ (goto-char (point-min))
+ ;; First find the line to put it on.
+ (when (re-search-forward "^total" nil t)
+ (let ((available (get-free-disk-space ".")))
+ (when available
+ ;; Replace "total" with "used", to avoid confusion.
+ (replace-match "total used in directory")
+ (end-of-line)
(insert " available " available))))))))))
+(defun insert-directory-safely (file switches
+ &optional wildcard full-directory-p)
+ "Insert directory listing for FILE, formatted according to SWITCHES.
+
+Like `insert-directory', but if FILE does not exist, it inserts a
+message to that effect instead of signaling an error."
+ (if (file-exists-p file)
+ (insert-directory file switches wildcard full-directory-p)
+ ;; Simulate the message printed by `ls'.
+ (insert (format "%s: No such file or directory\n" file))))
+
(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.
but `kill-emacs', the low level primitive, does not.
See also `kill-emacs-hook'.")
+(defcustom confirm-kill-emacs nil
+ "How to ask for confirmation when leaving Emacs.
+If nil, the default, don't ask at all. If the value is non-nil, it should
+be a predicate function such as `yes-or-no-p'."
+ :type '(choice (const :tag "Ask with yes-or-no-p" yes-or-no-p)
+ (const :tag "Ask with y-or-n-p" y-or-n-p)
+ (const :tag "Don't confirm" nil))
+ :group 'emacs
+ :version "21.1")
+
(defun save-buffers-kill-emacs (&optional arg)
"Offer to save each buffer, then kill this Emacs process.
With prefix arg, silently save all file-visiting buffers, then kill."
(let ((processes (process-list))
active)
(while processes
- (and (memq (process-status (car processes)) '(run stop open))
- (let ((val (process-kill-without-query (car processes))))
- (process-kill-without-query (car processes) val)
- val)
+ (and (memq (process-status (car processes)) '(run stop open listen))
+ (process-query-on-exit-flag (car processes))
(setq active t))
(setq processes (cdr processes)))
(or (not active)
- (list-processes)
+ (list-processes t)
(yes-or-no-p "Active processes exist; kill them and exit anyway? "))))
;; Query the user for other things, perhaps.
(run-hook-with-args-until-failure 'kill-emacs-query-functions)
+ (or (null confirm-kill-emacs)
+ (funcall confirm-kill-emacs "Really exit Emacs? "))
(kill-emacs)))
\f
;; We use /: as a prefix to "quote" a file name
;; Get a list of the indices of the args which are file names.
(file-arg-indices
(cdr (or (assq operation
- ;; The first four are special because they
+ ;; The first five are special because they
;; return a file name. We want to include the /:
;; in the return value.
;; So just avoid stripping it in the first place.
'((expand-file-name . nil)
- ;; `identity' means just return the first arg
- ;; as stripped of its quoting.
- (substitute-in-file-name . identity)
(file-name-directory . nil)
(file-name-as-directory . nil)
(directory-file-name . nil)
- (file-name-completion 0 1)
- (file-name-all-completions 0 1)
+ (file-name-sans-versions . nil)
+ ;; `identity' means just return the first arg
+ ;; as stripped of its quoting.
+ (substitute-in-file-name . identity)
+ (file-name-completion 1)
+ (file-name-all-completions 1)
(rename-file 0 1)
(copy-file 0 1)
(make-symbolic-link 0 1)
HCoop / bpt / emacs.git / blobdiff