(defvar buffer-file-numbers-unique (not (memq system-type '(windows-nt)))
"Non-nil means that buffer-file-number uniquely identifies files.")
+(defvar file-name-invalid-regexp
+ (cond ((and (eq system-type 'ms-dos) (not (msdos-long-file-names)))
+ (concat "\\(^\\([A-z]:\\)?/?.*:\\)\\|" ; colon except after drive
+ "[+, ;=|<>\"?*]\\|\\[\\|\\]\\|" ; invalid characters
+ "[\000-\031]|" ; control characters
+ "\\(/\\.\\.?[^/]\\)\\|" ; leading dots
+ "\\(/[^/.]+\\.[^/.]*\\.\\)")) ; more than a single dot
+ ((memq system-type '(ms-dos windows-nt))
+ (concat "\\(^\\([A-z]:\\)?/?.*:\\)\\|" ; colon except after drive
+ "[|<>\"?*\000-\031]")) ; invalid characters
+ (t "[\000]"))
+ "Regexp recognizing file names which aren't allowed by the filesystem.")
+
(defcustom file-precious-flag nil
"*Non-nil means protect against I/O errors while saving files.
Some modes set this non-nil in particular buffers.
t means make numeric backup versions unconditionally.
nil means make them for files that have some already.
`never' means do not make them."
- :type 'boolean
+ :type '(choice (const :tag "Never" never)
+ (const :tag "If existing" nil)
+ (other :tag "Always" t))
:group 'backup
:group 'vc)
If nil, ask confirmation. Any other value prevents any trimming."
:type '(choice (const :tag "Delete" t)
(const :tag "Ask" nil)
- (sexp :tag "Leave" :format "%t\n" other))
+ (other :tag "Leave" other))
:group 'backup)
(defcustom kept-old-versions 2
nil means don't add newlines."
:type '(choice (const :tag "Off" nil)
(const :tag "Add" t)
- (sexp :tag "Ask" :format "%t\n" ask))
+ (other :tag "Ask" ask))
:group 'editing-basics)
(defcustom auto-save-default t
specifications and ignores this variable."
:type '(choice (const :tag "Obey" t)
(const :tag "Ignore" nil)
- (sexp :tag "Query" :format "%t\n" other))
+ (other :tag "Query" other))
:group 'find-file)
+(defvar local-enable-local-variables t
+ "Like `enable-local-variables' but meant for buffer-local bindings.
+If a major mode sets this to nil, buffer-locally, then any local
+variables list in the file will be ignored.")
+
(defcustom enable-local-eval 'maybe
"*Control processing of the \"variable\" `eval' in a file's local variables.
The value can be t, nil or something else.
and ignores this variable."
:type '(choice (const :tag "Obey" t)
(const :tag "Ignore" nil)
- (sexp :tag "Query" :format "%t\n" other))
+ (other :tag "Query" other))
:group 'find-file)
;; Avoid losing in versions where CLASH_DETECTION is disabled.
(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.")
+
+;; 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
"Value of the CDPATH environment variable, as a list.
Not actually set up until the first time you you use it.")
-(defvar path-separator ":"
- "Character used to separate directories in search paths.")
-
(defun parse-colon-path (cd-path)
"Explode a colon-separated search path into a list of directory names."
(and cd-path
(truename (abbreviate-file-name (file-truename filename)))
(number (nthcdr 10 (file-attributes truename)))
;; Find any buffer for a file which has same truename.
- (other (and (not buf) (find-buffer-visiting filename)))
- error)
+ (other (and (not buf) (find-buffer-visiting filename))))
;; Let user know if there is a buffer with the same truename.
(if other
(progn
(if (or find-file-existing-other-name find-file-visit-truename)
(setq buf other))))
(if buf
- (or nowarn
- (verify-visited-file-modtime buf)
- (cond ((not (file-exists-p filename))
- (error "File %s no longer exists!" filename))
- ;; Certain files should be reverted automatically
- ;; if they have changed on disk and not in the buffer.
- ((and (not (buffer-modified-p buf))
- (let ((tail revert-without-query)
- (found nil))
- (while tail
- (if (string-match (car tail) filename)
- (setq found t))
- (setq tail (cdr tail)))
- found))
- (with-current-buffer buf
- (message "Reverting file %s..." filename)
- (revert-buffer t t)
- (message "Reverting file %s...done" filename)))
- ((yes-or-no-p
- (if (string= (file-name-nondirectory filename)
- (buffer-name buf))
+ ;; We are using an existing buffer.
+ (progn
+ (or nowarn
+ (verify-visited-file-modtime buf)
+ (cond ((not (file-exists-p filename))
+ (error "File %s no longer exists!" filename))
+ ;; Certain files should be reverted automatically
+ ;; if they have changed on disk and not in the buffer.
+ ((and (not (buffer-modified-p buf))
+ (let ((tail revert-without-query)
+ (found nil))
+ (while tail
+ (if (string-match (car tail) filename)
+ (setq found t))
+ (setq tail (cdr tail)))
+ found))
+ (with-current-buffer buf
+ (message "Reverting file %s..." filename)
+ (revert-buffer t t)
+ (message "Reverting file %s...done" filename)))
+ ((yes-or-no-p
+ (if (string= (file-name-nondirectory filename)
+ (buffer-name buf))
+ (format
+ (if (buffer-modified-p buf)
+ "File %s changed on disk. Discard your edits? "
+ "File %s changed on disk. Reread from disk? ")
+ (file-name-nondirectory filename))
(format
(if (buffer-modified-p buf)
- "File %s changed on disk. Discard your edits? "
- "File %s changed on disk. Reread from disk? ")
- (file-name-nondirectory filename))
- (format
- (if (buffer-modified-p buf)
- "File %s changed on disk. Discard your edits in %s? "
- "File %s changed on disk. Reread from disk into %s? ")
- (file-name-nondirectory filename)
- (buffer-name buf))))
- (with-current-buffer buf
- (revert-buffer t t)))
- ((not (eq rawfile (not (null find-file-literally))))
- (if rawfile
- (message "File is already visited, and not literally")
- (message "File is already visited, and visited literally")))))
- (save-excursion
-;;; The truename stuff makes this obsolete.
-;;; (let* ((link-name (car (file-attributes filename)))
-;;; (linked-buf (and (stringp link-name)
-;;; (get-file-buffer link-name))))
-;;; (if (bufferp linked-buf)
-;;; (message "Symbolic link to file in buffer %s"
-;;; (buffer-name linked-buf))))
- (setq buf (create-file-buffer filename))
- (set-buffer-major-mode buf)
- (set-buffer buf)
- (erase-buffer)
- (if rawfile
- (condition-case ()
- (insert-file-contents-literally filename t)
- (file-error
- (when (and (file-exists-p filename)
- (not (file-readable-p filename)))
- (kill-buffer buf)
- (signal 'file-error (list "File is not readable"
- filename)))
- ;; Unconditionally set error
- (setq error t)))
- (condition-case ()
- (insert-file-contents filename t)
- (file-error
- (when (and (file-exists-p filename)
- (not (file-readable-p filename)))
- (kill-buffer buf)
- (signal 'file-error (list "File is not readable"
- filename)))
- ;; Run find-file-not-found-hooks until one returns non-nil.
- (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)
- (setq buffer-file-number number)
- ;; On VMS, we may want to remember which directory in a search list
- ;; the file was found in.
- (and (eq system-type 'vax-vms)
- (let (logical)
- (if (string-match ":" (file-name-directory filename))
- (setq logical (substring (file-name-directory filename)
- 0 (match-beginning 0))))
- (not (member logical find-file-not-true-dirname-list)))
- (setq buffer-file-name buffer-file-truename))
- (if find-file-visit-truename
- (setq buffer-file-name
- (setq filename
- (expand-file-name buffer-file-truename))))
- ;; Set buffer's default directory to that of the file.
- (setq default-directory (file-name-directory filename))
- ;; 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))
- (progn
- (make-local-variable 'backup-inhibited)
- (setq backup-inhibited t)))
- (if rawfile
- (progn
- (set-buffer-multibyte nil)
- (make-local-variable 'find-file-literally)
- (setq find-file-literally t))
- (after-find-file error (not nowarn))
- (setq buf (current-buffer)))))
- buf)))
+ "File %s changed on disk. Discard your edits in %s? "
+ "File %s changed on disk. Reread from disk into %s? ")
+ (file-name-nondirectory filename)
+ (buffer-name buf))))
+ (with-current-buffer buf
+ (revert-buffer t t)))))
+ (when (not (eq rawfile (not (null find-file-literally))))
+ (with-current-buffer buf
+ (if (buffer-modified-p)
+ (if (y-or-n-p (if rawfile
+ "Save file and revisit literally? "
+ "Save file and revisit non-literally? "))
+ (progn
+ (save-buffer)
+ (find-file-noselect-1 buf filename nowarn
+ rawfile truename number))
+ (if (y-or-n-p (if rawfile
+ "Discard your edits and revisit file literally? "
+ "Discard your edits and revisit file non-literally? "))
+ (find-file-noselect-1 buf filename nowarn
+ rawfile truename number)
+ (error (if rawfile "File already visited non-literally"
+ "File already visited literally"))))
+ (if (y-or-n-p (if rawfile
+ "Revisit file literally? "
+ "Revisit file non-literally? "))
+ (find-file-noselect-1 buf filename nowarn
+ rawfile truename number)
+ (error (if rawfile "File already visited non-literally"
+ "File already visited literally"))))))
+ ;; Return the buffer we are using.
+ buf)
+ ;; Create a new buffer.
+ (setq buf (create-file-buffer filename))
+ (set-buffer-major-mode buf)
+ ;; find-file-noselect-1 may use a different buffer.
+ (find-file-noselect-1 buf filename nowarn
+ rawfile truename number)))))
+
+(defun find-file-noselect-1 (buf filename nowarn rawfile truename number)
+ (let ((inhibit-read-only t)
+ error)
+ (with-current-buffer buf
+ (kill-local-variable 'find-file-literally)
+ ;; Needed in case we are re-visiting the file with a different
+ ;; text representation.
+ (setq buffer-file-coding-system default-buffer-file-coding-system)
+ (erase-buffer)
+ (and (default-value 'enable-multibyte-characters)
+ (not rawfile)
+ (set-buffer-multibyte t))
+ (if rawfile
+ (condition-case ()
+ (insert-file-contents-literally filename t)
+ (file-error
+ (when (and (file-exists-p filename)
+ (not (file-readable-p filename)))
+ (kill-buffer buf)
+ (signal 'file-error (list "File is not readable"
+ filename)))
+ ;; Unconditionally set error
+ (setq error t)))
+ (condition-case ()
+ (insert-file-contents filename t)
+ (file-error
+ (when (and (file-exists-p filename)
+ (not (file-readable-p filename)))
+ (kill-buffer buf)
+ (signal 'file-error (list "File is not readable"
+ filename)))
+ ;; Run find-file-not-found-hooks until one returns non-nil.
+ (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)
+ (setq buffer-file-number number)
+ ;; On VMS, we may want to remember which directory in a search list
+ ;; the file was found in.
+ (and (eq system-type 'vax-vms)
+ (let (logical)
+ (if (string-match ":" (file-name-directory filename))
+ (setq logical (substring (file-name-directory filename)
+ 0 (match-beginning 0))))
+ (not (member logical find-file-not-true-dirname-list)))
+ (setq buffer-file-name buffer-file-truename))
+ (if find-file-visit-truename
+ (setq buffer-file-name
+ (setq filename
+ (expand-file-name buffer-file-truename))))
+ ;; Set buffer's default directory to that of the file.
+ (setq default-directory (file-name-directory filename))
+ ;; 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))
+ (progn
+ (make-local-variable 'backup-inhibited)
+ (setq backup-inhibited t)))
+ (if rawfile
+ (progn
+ (set-buffer-multibyte nil)
+ (setq buffer-file-coding-system 'no-conversion)
+ (make-local-variable 'find-file-literally)
+ (setq find-file-literally t))
+ (after-find-file error (not nowarn)))
+ (current-buffer))))
\f
(defun insert-file-contents-literally (filename &optional visit beg end replace)
"Like `insert-file-contents', but only reads in the file literally.
("\\.lex\\'" . c-mode)
("\\.oak\\'" . scheme-mode)
("\\.sgml?\\'" . sgml-mode)
+ ("\\.xml\\'" . sgml-mode)
("\\.dtd\\'" . sgml-mode)
("\\.ds\\(ss\\)?l\\'" . dsssl-mode)
;; .emacs following a directory delimiter
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
- "" ; set by command-line
- "File name including directory of user's initialization file.")
+(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.
(goto-char (point-min))
(skip-chars-forward " \t\n")
(and enable-local-variables
+ local-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)
keep-going nil)))
(setq alist (cdr alist))))
(if mode
- (funcall mode)
+ ;; When JUST-FROM-FILE-NAME is set,
+ ;; we are working on behalf of set-visited-file-name.
+ ;; In that case, if the major mode specified is the
+ ;; same one we already have, don't actually reset it.
+ ;; We don't want to lose minor modes such as Font Lock.
+ (unless (and just-from-file-name (eq mode major-mode))
+ (funcall mode))
;; If we can't deduce a mode from the file name,
;; look for an interpreter specified in the first line.
;; As a special case, allow for things like "#!/bin/env perl",
;; Likewise for setting hook variables.
((or (get var 'risky-local-variable)
(and
- (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$"
+ (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$"
(symbol-name var))
(not (get var 'safe-local-variable))))
;; Permit evalling a put of a harmless property.
(read-file-name "Write file: "
(cdr (assq 'default-directory
(buffer-local-variables)))
- nil nil (buffer-name)))
+ nil nil (file-name-nondirectory (buffer-name))))
(not current-prefix-arg)))
(or (null filename) (string-equal filename "")
(progn
(defvar after-save-hook nil
"Normal hook that is run after a buffer is saved to its file.")
+(defvar save-buffer-coding-system nil
+ "If non-nil, use this coding system for saving the buffer.
+More precisely, use this coding system in place of the
+value of `buffer-file-coding-system', when saving the buffer.
+Calling `write-region' for any purpose other than saving the buffer
+will still use `buffer-file-coding-system'; this variable has no effect
+in such cases.")
+
(defun basic-save-buffer ()
"Save the current buffer in its visited file, if it has been modified.
After saving the buffer, run `after-save-hook'."
;; Now we have saved the current buffer. Let's make sure
;; that buffer-file-coding-system is fixed to what
;; actually used for saving by binding it locally.
- (setq buffer-file-coding-system last-coding-system-used)
+ (if save-buffer-coding-system
+ (setq save-buffer-coding-system last-coding-system-used)
+ (setq buffer-file-coding-system last-coding-system-used))
(setq buffer-file-number
(nthcdr 10 (file-attributes buffer-file-name)))
(if setmodes
;; but inhibited if one of write-file-hooks returns non-nil.
;; It returns a value to store in setmodes.
(defun basic-save-buffer-1 ()
- (let (tempsetmodes setmodes)
+ (let ((buffer-file-coding-system
+ (or save-buffer-coding-system
+ buffer-file-coding-system))
+ tempsetmodes setmodes)
(if (not (file-writable-p buffer-file-name))
(let ((dir (file-name-directory buffer-file-name)))
(if (not (file-directory-p dir))
nil) ; do nothing.
;; Toggle.
((and buffer-read-only view-mode)
- (View-exit-and-edit)) ; Must leave view mode.
+ (View-exit-and-edit)
+ (make-local-variable 'view-read-only)
+ (setq view-read-only t)) ; Must leave view mode.
((and (not buffer-read-only) view-read-only
(not (eq (get major-mode 'mode-class) 'special)))
(view-mode-enter))
(let ((file (dired-get-filename))
files
(buffer (get-buffer-create " *recover*")))
+ (dired-unmark 1)
(dired-do-flagged-delete t)
(unwind-protect
(save-excursion
(and enable-multibyte-characters
(or file-name-coding-system
default-file-name-coding-system)))
- ;; This binding is for encoding arguements by call-process.
+ ;; This is to control encoding the arguments in call-process.
(coding-system-for-write coding-system-for-read)
(result
(if wildcard
(append list
;; Avoid lossage if FILE starts with `-'.
'("--")
- (list
- (if full-directory-p
- (concat (file-name-as-directory file) ".")
- file))))))))
+ (progn
+ (if (string-match "\\`~" file)
+ (setq file (expand-file-name file)))
+ (list
+ (if full-directory-p
+ (concat (file-name-as-directory file) ".")
+ file)))))))))
(if (/= result 0)
;; We get here if ls failed.
;; Access the file to get a suitable error.
HCoop / bpt / emacs.git / blobdiff