(push elt dir-local-variables-alist))
(hack-local-variables-filter variables dir-name)))))))
+\f
+;;; Commands to add/delete file-local/directory-local variables.
+
+(defun read-file-local-variable (prompt)
+ "Read file-local variable using PROMPT and completion.
+Intended to be used in the `interactive' spec of
+`add-file-local-variable', `delete-file-local-variable',
+`add-dir-local-variable', `delete-dir-local-variable'."
+ (let (default variable)
+ (setq default (variable-at-point))
+ (setq default (and (symbolp default) (boundp default)
+ (symbol-name default)))
+ (setq variable
+ (completing-read
+ (if default
+ (format "%s (default %s): " prompt default)
+ (format "%s: " prompt))
+ obarray
+ (lambda (sym)
+ (or (user-variable-p sym)
+ (memq sym '(mode eval coding unibyte))))
+ nil nil nil default nil))
+ (and (stringp variable) (intern variable))))
+
+(defun read-file-local-variable-value (variable)
+ "Read value of file-local VARIABLE using completion.
+Intended to be used in the `interactive' spec of
+`add-file-local-variable' and `add-dir-local-variable'."
+ (let (default value)
+ (cond
+ ((eq variable 'mode)
+ (setq default (and (symbolp major-mode) (symbol-name major-mode)))
+ (setq value
+ (completing-read
+ (if default
+ (format "Add %s with value (default %s): " variable default)
+ (format "Add %s with value: " variable))
+ obarray
+ (lambda (sym)
+ (and (string-match-p "-mode\\'" (symbol-name sym))
+ (not (string-match-p "-minor-mode\\'" (symbol-name sym)))))
+ nil nil nil default nil))
+ (and (stringp value)
+ (intern (replace-regexp-in-string "-mode\\'" "" value))))
+ ((eq variable 'eval)
+ (let ((minibuffer-completing-symbol t))
+ (read-from-minibuffer (format "Add %s with expression: " variable)
+ nil read-expression-map t
+ 'read-expression-history)))
+ ((eq variable 'coding)
+ (setq default (and (symbolp buffer-file-coding-system)
+ (symbol-name buffer-file-coding-system)))
+ (read-coding-system
+ (if default
+ (format "Add %s with value (default %s): " variable default)
+ (format "Add %s with value: " variable))
+ default))
+ (t
+ (read (read-string (format "Add %s with value: " variable)
+ nil 'set-variable-value-history
+ (format "%S" (symbol-value variable))))))))
+
+(defun read-file-local-variable-mode ()
+ "Read per-directory file-local variable's mode using completion.
+Intended to be used in the `interactive' spec of
+`add-dir-local-variable', `delete-dir-local-variable'."
+ (let* ((default (and (symbolp major-mode) (symbol-name major-mode)))
+ (mode
+ (completing-read
+ (if default
+ (format "Mode or subdirectory (default %s): " default)
+ (format "Mode or subdirectory: "))
+ obarray
+ (lambda (sym)
+ (and (string-match-p "-mode\\'" (symbol-name sym))
+ (not (string-match-p "-minor-mode\\'" (symbol-name sym)))))
+ nil nil nil default nil)))
+ (cond
+ ((equal mode "nil") nil)
+ ((and (stringp mode) (fboundp (intern mode))) (intern mode))
+ (t mode))))
+
+(defun modify-file-local-variable (variable value op)
+ "Modify file-local VARIABLE in Local Variables depending on operation OP.
+
+If OP is `add-or-replace' then delete all existing settings of
+VARIABLE (except `mode' and `eval') and add a new file-local VARIABLE
+with VALUE to the Local Variables list.
+
+If there is no Local Variables list in the current file buffer and OP
+is not `delete' then this function adds the first line containing the
+string `Local Variables:' and the last line containing the string `End:'.
+
+If OP is `delete' then delete all existing settings of VARIABLE
+from the Local Variables list ignoring the input argument VALUE."
+ (catch 'exit
+ (let ((beg (point)) end replaced-pos)
+ (unless enable-local-variables
+ (throw 'exit (message "File-local variables are disabled")))
+
+ ;; Look for "Local variables:" line in last page.
+ (widen)
+ (goto-char (point-max))
+ (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move)
+
+ ;; Add "Local variables:" list if not found.
+ (unless (let ((case-fold-search t))
+ (search-forward "Local Variables:" nil t))
+
+ ;; Don't add "Local variables:" list for the deletion operation.
+ (when (eq op 'delete)
+ (throw 'exit (progn (goto-char beg)
+ (message "Local Variables not found"))))
+
+ (goto-char (point-max))
+ (let ((comment-style 'plain)
+ (comment-start (or comment-start ";;; ")))
+ (comment-region
+ (prog1 (setq beg (point))
+ (insert "\nLocal Variables:\nEnd:\n"))
+ (point)))
+
+ (unless (let ((case-fold-search t))
+ (goto-char beg)
+ (search-forward "Local Variables:" nil t))
+ (throw 'exit (message "Can't add file-local variables"))))
+
+ ;; prefix is what comes before "local variables:" in its line.
+ ;; suffix is what comes after "local variables:" in its line.
+ (let* ((prefix (buffer-substring (line-beginning-position)
+ (match-beginning 0)))
+ (suffix (buffer-substring (point) (line-end-position)))
+ (prefix-re (concat "^" (regexp-quote prefix)))
+ (suffix-re (concat (regexp-quote suffix) "$")))
+
+ ;; Find or add missing "End:".
+ (forward-line 1)
+ (setq beg (point))
+ (save-excursion
+ (unless (let ((case-fold-search t))
+ (re-search-forward
+ (concat prefix-re "[ \t]*End:[ \t]*" suffix-re)
+ nil t))
+ (save-excursion
+ (insert (format "%sEnd:%s\n" prefix suffix))))
+ (beginning-of-line)
+ (setq end (point-marker)))
+
+ ;; Find and delete all existing variable/value pairs.
+ (when (member op '(add-or-replace delete))
+ (if (and (eq op 'add-or-replace) (memq variable '(mode eval)))
+ (goto-char end)
+ (goto-char beg)
+ (while (re-search-forward
+ (format "%s%S:.*%s" prefix-re variable suffix-re) end t)
+ (delete-region (match-beginning 0) (1+ (match-end 0)))
+ (setq replaced-pos (point)))))
+
+ ;; Add a new variable/value pair. Add `mode' to the start, add new
+ ;; variable to the end, and add a replaced variable to its last location.
+ (when (eq op 'add-or-replace)
+ (cond
+ ((eq variable 'mode) (goto-char beg))
+ ((null replaced-pos) (goto-char end))
+ (replaced-pos (goto-char replaced-pos)))
+ (insert (format "%s%S: %S%s\n" prefix variable value suffix)))))))
+
+(defun add-file-local-variable (variable value)
+ "Add file-local VARIABLE with its VALUE to the Local Variables list.
+
+This command deletes all existing settings of VARIABLE (except `mode'
+and `eval') and adds a new file-local VARIABLE with VALUE to the
+Local Variables list.
+
+If there is no Local Variables list in the current file buffer
+then this function adds the first line containing the string
+`Local Variables:' and the last line containing the string `End:'."
+ (interactive
+ (let ((variable (read-file-local-variable "Add file-local variable")))
+ (list variable (read-file-local-variable-value variable))))
+ (modify-file-local-variable variable value 'add-or-replace))
+
+(defun delete-file-local-variable (variable)
+ "Delete all settings of file-local VARIABLE from the Local Variables list."
+ (interactive
+ (list (read-file-local-variable "Delete file-local variable")))
+ (modify-file-local-variable variable nil 'delete))
+
+(defun modify-file-local-variable-prop-line (variable value op)
+ "Modify file-local VARIABLE in the -*- line depending on operation OP.
+
+If OP is `add-or-replace' then delete all existing settings of
+VARIABLE (except `mode' and `eval') and add a new file-local VARIABLE
+with VALUE to the -*- line.
+
+If there is no -*- line at the beginning of the current file buffer
+and OP is not `delete' then this function adds the -*- line.
+
+If OP is `delete' then delete all existing settings of VARIABLE
+from the -*- line ignoring the input argument VALUE."
+ (catch 'exit
+ (let ((beg (point)) end replaced-pos)
+ (unless enable-local-variables
+ (throw 'exit (message "File-local variables are disabled")))
+
+ ;; Find the -*- line at the beginning of the current buffer.
+ (widen)
+ (goto-char (point-min))
+ (setq end (set-auto-mode-1))
+
+ (if end
+ (setq beg (point) end (copy-marker end))
+
+ ;; Add the -*- line if not found.
+ ;; Don't add the -*- line for the deletion operation.
+ (when (eq op 'delete)
+ (throw 'exit (progn (goto-char beg)
+ (message "The -*- line not found"))))
+
+ (goto-char (point-min))
+
+ ;; Skip interpreter magic line "#!"
+ (when (looking-at "^\\(#!\\|'\\\\\"\\)")
+ (forward-line 1))
+
+ (let ((comment-style 'plain)
+ (comment-start (or comment-start ";;; ")))
+ (comment-region
+ (prog1 (point)
+ (insert "-*-")
+ (setq beg (point-marker))
+ (setq end (point-marker))
+ (insert "-*-\n"))
+ (point))))
+
+ (cond
+ ((looking-at "[ \t]*\\([^ \t\n\r:;]+\\)\\([ \t]*-\\*-\\)")
+ ;; Simple form: "-*- MODENAME -*-".
+ (if (eq variable 'mode)
+ ;; Replace or delete MODENAME
+ (progn
+ (when (member op '(add-or-replace delete))
+ (delete-region (match-beginning 1) (match-end 1)))
+ (when (eq op 'add-or-replace)
+ (goto-char (match-beginning 1))
+ (insert (format "%S" value))))
+ ;; Else, turn `MODENAME' into `mode:MODENAME'
+ ;; and add `;VARIABLE:VALUE'
+ (goto-char (match-beginning 2))
+ (insert (format "; %S: %S " variable value))
+ (goto-char (match-beginning 1))
+ (insert " mode: ")))
+
+ (t
+ ;; Hairy form: '-*-' [ <variable> ':' <value> ';' ]* '-*-'
+ ;; Find and delete all existing variable/value pairs.
+ (when (member op '(add-or-replace delete))
+ (if (and (eq op 'add-or-replace) (memq variable '(mode eval)))
+ (goto-char end)
+ (goto-char beg)
+ (while (< (point) end)
+ (or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*")
+ (throw 'exit (message "Malformed -*- line")))
+ (goto-char (match-end 0))
+ (let ((key (intern (match-string 1)))
+ (val (save-restriction
+ (narrow-to-region (point) end)
+ (let ((read-circle nil))
+ (read (current-buffer))))))
+ (skip-chars-forward " \t;")
+ (when (eq key variable)
+ (delete-region (match-beginning 0) (point))
+ (setq replaced-pos (point)))))))
+ ;; Add a new variable/value pair. Add `mode' to the start, add new
+ ;; variable to the end, and add a replaced variable to its last location.
+ (when (eq op 'add-or-replace)
+ (cond
+ ((eq variable 'mode) (goto-char beg))
+ ((null replaced-pos) (goto-char end) (insert "; "))
+ (replaced-pos (goto-char replaced-pos)))
+ (insert (format "%S: %S" variable value))
+ (cond
+ ((eq variable 'mode) (insert "; "))
+ (replaced-pos (insert "; ") ))))))))
+
+(defun add-file-local-variable-prop-line (variable value)
+ "Add file-local VARIABLE with its VALUE to the -*- line.
+
+This command deletes all existing settings of VARIABLE (except `mode'
+and `eval') and adds a new file-local VARIABLE with VALUE to
+the -*- line.
+
+If there is no -*- line at the beginning of the current file buffer
+then this function adds it."
+ (interactive
+ (let ((variable (read-file-local-variable "Add -*- file-local variable")))
+ (list variable (read-file-local-variable-value variable))))
+ (modify-file-local-variable-prop-line variable value 'add-or-replace))
+
+(defun delete-file-local-variable-prop-line (variable)
+ "Delete all settings of file-local VARIABLE from the -*- line."
+ (interactive
+ (list (read-file-local-variable "Delete -*- file-local variable")))
+ (modify-file-local-variable-prop-line variable nil 'delete))
+
+(defun modify-dir-local-variable (mode variable value op)
+ "Modify directory-local VARIABLE in .dir-locals.el depending on operation OP.
+
+If OP is `add-or-replace' then delete all existing settings of
+VARIABLE (except `mode' and `eval') and add a new directory-local VARIABLE
+with VALUE to the MODE alist where MODE can be a mode name symbol or
+a subdirectory name.
+
+If .dir-locals.el was not found and OP is not `delete' then create
+this file in the current directory.
+
+If OP is `delete' then delete all existing settings of VARIABLE
+from the the MODE alist ignoring the input argument VALUE."
+ (catch 'exit
+ (unless enable-local-variables
+ (throw 'exit (message "Directory-local variables are disabled")))
+
+ (let ((variables-file (or (and (buffer-file-name)
+ (not (file-remote-p (buffer-file-name)))
+ (dir-locals-find-file (buffer-file-name)))
+ dir-locals-file))
+ variables)
+
+ ;; Don't create ".dir-locals.el" for the deletion operation.
+ (when (and (eq op 'delete)
+ (not (file-exists-p variables-file)))
+ (throw 'exit (message "File .dir-locals.el not found")))
+
+ (let ((auto-insert nil))
+ (find-file variables-file))
+ (widen)
+ (goto-char (point-min))
+
+ ;; Read alist of directory-local variables.
+ (ignore-errors
+ (delete-region
+ (prog1 (point)
+ (setq variables (let ((read-circle nil))
+ (read (current-buffer)))))
+ (point)))
+
+ ;; Add or replace variable in alist of directory-local variables.
+ (let ((mode-assoc (assoc mode variables)))
+ (if mode-assoc
+ (setq variables
+ (cons (cons mode
+ (if (eq op 'delete)
+ (assq-delete-all variable (cdr mode-assoc))
+ (cons
+ (cons variable value)
+ (if (memq variable '(mode eval))
+ (cdr mode-assoc)
+ (assq-delete-all variable (cdr mode-assoc))))))
+ (assq-delete-all mode variables)))
+ (setq variables
+ (cons `(,mode . ((,variable . ,value)))
+ variables))))
+
+ ;; Insert modified alist of directory-local variables.
+ (insert ";;; Directory Local Variables\n")
+ (insert ";;; See Info node `(emacs) Directory Variables' for more information.\n\n")
+ (pp (sort variables
+ (lambda (a b)
+ (cond
+ ((null (car a)) t)
+ ((null (car b)) nil)
+ ((and (symbolp (car a)) (stringp (car b))) t)
+ ((and (symbolp (car b)) (stringp (car a))) nil)
+ (t (string< (car a) (car b))))))
+ (current-buffer)))))
+
+(defun add-dir-local-variable (mode variable value)
+ "Add directory-local VARIABLE with its VALUE and MODE to .dir-locals.el."
+ (interactive
+ (let (variable)
+ (list
+ (read-file-local-variable-mode)
+ (setq variable (read-file-local-variable "Add directory-local variable"))
+ (read-file-local-variable-value variable))))
+ (modify-dir-local-variable mode variable value 'add-or-replace))
+
+(defun delete-dir-local-variable (mode variable)
+ "Delete all MODE settings of file-local VARIABLE from .dir-locals.el."
+ (interactive
+ (list
+ (read-file-local-variable-mode)
+ (read-file-local-variable "Delete directory-local variable")))
+ (modify-dir-local-variable mode variable nil 'delete))
+
+(defun copy-file-locals-to-dir-locals ()
+ "Copy file-local variables to .dir-locals.el."
+ (interactive)
+ (dolist (elt file-local-variables-alist)
+ (unless (assq (car elt) dir-local-variables-alist)
+ (add-dir-local-variable major-mode (car elt) (cdr elt)))))
+
+(defun copy-dir-locals-to-file-locals ()
+ "Copy directory-local variables to the Local Variables list."
+ (interactive)
+ (dolist (elt dir-local-variables-alist)
+ (add-file-local-variable (car elt) (cdr elt))))
+
+(defun copy-dir-locals-to-file-locals-prop-line ()
+ "Copy directory-local variables to the the -*- line."
+ (interactive)
+ (dolist (elt dir-local-variables-alist)
+ (add-file-local-variable-prop-line (car elt) (cdr elt))))
+
\f
(defcustom change-major-mode-with-file-name t
"Non-nil means \\[write-file] should set the major mode from the file name.
projects / emacs.git / commitdiff