(defcustom enable-local-variables t
"*Control use of local variables in files you visit.
-The value can be t, nil or something else.
+The value can be t, nil, :safe, or something else.
A value of t means file local variables specifications are obeyed
if all the specified variable values are safe; if any values are
not safe, Emacs queries you, once, whether to set them all.
+\(When you say yes to certain values, they are remembered as safe.)
+
+:safe means set the safe variables, and ignore the rest.
+:all means set all variables, whether safe or not.
+ (Don't set it permanently to :all.)
+nil means always ignore the file local variables.
-A value of nil means always ignore the file local variables.
Any other value means always query you once whether to set them all.
+\(When you say yes to certain values, they are remembered as safe, but
+this has no effect when `enable-local-variables' is \"something else\".)
This variable also controls use of major modes specified in
a -*- line.
The command \\[normal-mode], when used interactively,
always obeys file local variable specifications and the -*- line,
and ignores this variable."
- :type '(choice (const :tag "Obey" t)
+ :type '(choice (const :tag "Query Unsafe" t)
+ (const :tag "Safe Only" :safe)
+ (const :tag "Do all" :all)
(const :tag "Ignore" nil)
(other :tag "Query" other))
:group 'find-file)
This function is called automatically from `find-file'. In that case,
we may set up the file-specified mode and local variables,
-depending on the value of `enable-local-variables': if it is t, we do;
-if it is nil, we don't; otherwise, we query.
+depending on the value of `enable-local-variables'.
In addition, if `local-enable-local-variables' is nil, we do
not set local variables (though we do notice a mode specified with -*-.)
default-text-properties
display-time-string
enable-local-eval
+ enable-local-variables
eval
exec-directory
exec-path
parse-time-rules
process-environment
rmail-output-file-alist
+ safe-local-variable-values
+ safe-local-eval-forms
save-some-buffers-action-alist
special-display-buffer-names
standard-input
(c-indent-level . integerp)
(comment-column . integerp)
(compile-command . string-or-null-p)
+ (find-file-visit-truename . t)
(fill-column . integerp)
(fill-prefix . string-or-null-p)
(indent-tabs-mode . t)
+ (kept-old-versions . integerp)
(kept-new-versions . integerp)
(left-margin . t)
(no-byte-compile . t)
""
", or C-v to scroll")))
(goto-char (point-min))
- (let ((inhibit-quit t)
- (cursor-in-echo-area t)
+ (let ((cursor-in-echo-area t)
(exit-chars
(if offer-save '(?! ?y ?n ?\s ?\C-g) '(?y ?n ?\s ?\C-g)))
done)
(condition-case nil
(scroll-up)
(error (goto-char (point-min))))
- (setq done (memq (downcase char) exit-chars)))))
- (if (= char ?\C-g)
- (setq quit-flag nil)))
+ (setq done (memq (downcase char) exit-chars))))))
(setq char (downcase char))
(when (and offer-save (= char ?!) unsafe-vars)
(dolist (elt unsafe-vars)
(and (risky-local-variable-p var val)
(push elt risky-vars))
(push elt unsafe-vars))))
- (if (or (and (eq enable-local-variables t)
- (null unsafe-vars)
- (null risky-vars))
- (hack-local-variables-confirm
- result unsafe-vars risky-vars))
+ (if (eq enable-local-variables :safe)
+ ;; If caller wants only the safe variables,
+ ;; install only them.
(dolist (elt result)
- (hack-one-local-variable (car elt) (cdr elt)))))
+ (unless (or (memq (car elt) unsafe-vars)
+ (memq (car elt) risky-vars))
+ (hack-one-local-variable (car elt) (cdr elt))))
+ ;; Query, except in the case where all are known safe
+ ;; if the user wants no quuery in that case.
+ (if (or (and (eq enable-local-variables t)
+ (null unsafe-vars)
+ (null risky-vars))
+ (eq enable-local-variables :all)
+ (hack-local-variables-confirm
+ result unsafe-vars risky-vars))
+ (dolist (elt result)
+ (hack-one-local-variable (car elt) (cdr elt))))))
(run-hooks 'hack-local-variables-hook))))))
(defun safe-local-variable-p (sym val)
* There is a matching entry (SYM . VAL) in the
`safe-local-variable-values' user option.
- * The `safe-local-variable' property of SYM is t.
-
* The `safe-local-variable' property of SYM is a function that
evaluates to a non-nil value with VAL as an argument."
(or (member (cons sym val) safe-local-variable-values)
(let ((safep (get sym 'safe-local-variable)))
- (or (eq safep t)
- (and (functionp safep)
- (funcall safep val))))))
+ (and (functionp safep) (funcall safep val)))))
(defun risky-local-variable-p (sym &optional ignored)
"Non-nil if SYM could be dangerous as a file-local variable.
(and (eq (car exp) 'put)
(hack-one-local-variable-quotep (nth 1 exp))
(hack-one-local-variable-quotep (nth 2 exp))
- (memq (nth 1 (nth 2 exp))
- '(lisp-indent-hook))
- ;; Only allow safe values of lisp-indent-hook;
- ;; not functions.
- (or (numberp (nth 3 exp))
- (equal (nth 3 exp) ''defun)))
+ (let ((prop (nth 1 (nth 2 exp))) (val (nth 3 exp)))
+ (cond ((eq prop 'lisp-indent-hook)
+ ;; Only allow safe values of lisp-indent-hook;
+ ;; not functions.
+ (or (numberp val) (equal val ''defun)))
+ ((eq prop 'edebug-form-spec)
+ ;; Only allow indirect form specs.
+ (edebug-basic-spec val)))))
;; Allow expressions that the user requested.
(member exp safe-local-eval-forms)
;; Certain functions can be allowed with safe arguments