diff options
Diffstat (limited to 'lisp/files.el')
| -rw-r--r-- | lisp/files.el | 849 |
1 files changed, 584 insertions, 265 deletions
diff --git a/lisp/files.el b/lisp/files.el index 12121872748..b99ccf66d8a 100644 --- a/lisp/files.el +++ b/lisp/files.el @@ -68,6 +68,31 @@ a regexp matching the name it is linked to." :group 'abbrev :group 'find-file) +(defun directory-abbrev-make-regexp (directory) + "Create a regexp to match DIRECTORY for `directory-abbrev-alist'." + (let ((regexp + ;; We include a slash at the end, to avoid spurious + ;; matches such as `/usr/foobar' when the home dir is + ;; `/usr/foo'. + (concat "\\`" (regexp-quote directory) "\\(/\\|\\'\\)"))) + ;; The value of regexp could be multibyte or unibyte. In the + ;; latter case, we need to decode it. + (if (multibyte-string-p regexp) + regexp + (decode-coding-string regexp + (if (eq system-type 'windows-nt) + 'utf-8 + locale-coding-system))))) + +(defun directory-abbrev-apply (filename) + "Apply the abbreviations in `directory-abbrev-alist' to FILENAME. +Note that when calling this, you should set `case-fold-search' as +appropriate for the filesystem used for FILENAME." + (dolist (dir-abbrev directory-abbrev-alist filename) + (when (string-match (car dir-abbrev) filename) + (setq filename (concat (cdr dir-abbrev) + (substring filename (match-end 0))))))) + (defcustom make-backup-files t "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. @@ -279,19 +304,17 @@ When nil, make them for files that have some already. The value `never' means do not make them." :type '(choice (const :tag "Never" never) (const :tag "If existing" nil) - (other :tag "Always" t)) + (other :tag "Always" t)) + :safe #'version-control-safe-local-p :group 'backup) (defun version-control-safe-local-p (x) "Return whether X is safe as local value for `version-control'." (or (booleanp x) (equal x 'never))) -(put 'version-control 'safe-local-variable - #'version-control-safe-local-p) - (defcustom dired-kept-versions 2 "When cleaning directory, number of versions to keep." - :type 'integer + :type 'natnum :group 'backup :group 'dired) @@ -305,16 +328,16 @@ If nil, ask confirmation. Any other value prevents any trimming." (defcustom kept-old-versions 2 "Number of oldest versions to keep when a new numbered backup is made." - :type 'integer + :type 'natnum + :safe #'natnump :group 'backup) -(put 'kept-old-versions 'safe-local-variable 'integerp) (defcustom kept-new-versions 2 "Number of newest versions to keep when a new numbered backup is made. Includes the new backup. Must be greater than 0." - :type 'integer + :type 'natnum + :safe #'natnump :group 'backup) -(put 'kept-new-versions 'safe-local-variable 'integerp) (defcustom require-final-newline nil "Whether to add a newline automatically at the end of the file. @@ -418,6 +441,39 @@ idle for `auto-save-visited-interval' seconds." (when auto-save--timer (timer-set-idle-time auto-save--timer value :repeat)))) +(defcustom auto-save-visited-predicate nil + "Predicate function for `auto-save-visited-mode'. + +If non-nil, the value should be a function of no arguments; it +will be called once in each file-visiting buffer when the time +comes to auto-save. A buffer will be saved only if the predicate +function returns a non-nil value. + +For example, you could add this to your Init file to only save +files that are both in Org mode and in a particular directory: + + (setq auto-save-visited-predicate + (lambda () (and (eq major-mode \\='org-mode) + (string-match \"^/home/skangas/org/\" + buffer-file-name)))) + +If the value of this variable is not a function, it is ignored. +This is the same as having a predicate that always returns +non-nil." + :group 'auto-save + :type '(choice :tag "Function:" + (const :tag "No extra predicate" :value nil) + (function :tag "Predicate function" :value always)) + :risky t + :version "29.1") + +(defcustom remote-file-name-inhibit-auto-save-visited nil + "When nil, `auto-save-visited-mode' will auto-save remote files. +Any other value means that it will not." + :group 'auto-save + :type 'boolean + :version "29.1") + (define-minor-mode auto-save-visited-mode "Toggle automatic saving of file-visiting buffers to their files. @@ -429,6 +485,9 @@ file intact. See Info node `Saving' for details of the save process. The user option `auto-save-visited-interval' controls how often to auto-save a buffer into its visited file. +You can use `auto-save-visited-predicate' to control which +buffers are saved. + You can also set the buffer-local value of the variable `auto-save-visited-mode' to nil. A buffer where the buffer-local value of this variable is nil is ignored for the purpose of @@ -448,7 +507,11 @@ For more details, see Info node `(emacs) Auto Save Files'." (and buffer-file-name auto-save-visited-mode (not (and buffer-auto-save-file-name - auto-save-visited-file-name)))))))) + auto-save-visited-file-name)) + (or (not (file-remote-p buffer-file-name)) + (not remote-file-name-inhibit-auto-save-visited)) + (or (not (functionp auto-save-visited-predicate)) + (funcall auto-save-visited-predicate)))))))) ;; The 'set' part is so we don't get a warning for using this variable ;; above, while still catching code that _sets_ the variable to get @@ -968,10 +1031,7 @@ one or more of those symbols." (logior (if (memq 'executable predicate) 1 0) (if (memq 'writable predicate) 2 0) (if (memq 'readable predicate) 4 0)))) - (let ((file (locate-file-internal filename path suffixes predicate))) - (if (and file (string-match "\\.eln\\'" file)) - (gethash (file-name-nondirectory file) comp-eln-to-el-h) - file))) + (locate-file-internal filename path suffixes predicate)) (defun locate-file-completion-table (dirs suffixes string pred action) "Do completion for file names passed to `locate-file'." @@ -1099,10 +1159,17 @@ directory if it does not exist." (if (file-directory-p user-emacs-directory) (or (file-accessible-directory-p user-emacs-directory) (setq errtype "access")) - (with-file-modes ?\700 - (condition-case nil - (make-directory user-emacs-directory t) - (error (setq errtype "create"))))) + ;; We don't want to create HOME if it doesn't exist. + (if (and (not (file-exists-p "~")) + (string-prefix-p + (expand-file-name "~") + (expand-file-name user-emacs-directory))) + (setq errtype "create") + ;; Create `user-emacs-directory'. + (with-file-modes ?\700 + (condition-case nil + (make-directory user-emacs-directory t) + (error (setq errtype "create")))))) (when (and errtype user-emacs-directory-warning (not (get 'user-emacs-directory-warning 'this-session))) @@ -1474,8 +1541,13 @@ in all cases, since that is the standard symbol for byte." (if (string= prefix "") "" "i") (or unit "B")) (concat prefix unit)))) - (format (if (and (>= (mod file-size 1.0) 0.05) + ;; Mimic what GNU "ls -lh" does: + ;; If the formatted size will have just one digit before the decimal... + (format (if (and (< file-size 10) + ;; ...and its fractional part is not too small... + (>= (mod file-size 1.0) 0.05) (< (mod file-size 1.0) 0.95)) + ;; ...then emit one digit after the decimal. "%.1f%s%s" "%.0f%s%s") file-size @@ -1996,12 +2068,14 @@ otherwise a string <2> or <3> or ... is appended to get an unused name. Emacs treats buffers whose names begin with a space as internal buffers. To avoid confusion when visiting a file whose name begins with a space, this function prepends a \"|\" to the final result if necessary." - (let ((lastname (file-name-nondirectory filename))) - (if (string= lastname "") - (setq lastname filename)) - (generate-new-buffer (if (string-prefix-p " " lastname) - (concat "|" lastname) - lastname)))) + (let* ((lastname (file-name-nondirectory filename)) + (lastname (if (string= lastname "") + filename lastname)) + (buf (generate-new-buffer (if (string-prefix-p " " lastname) + (concat "|" lastname) + lastname)))) + (uniquify--create-file-buffer-advice buf filename) + buf)) (defcustom automount-dir-prefix (purecopy "^/tmp_mnt/") "Regexp to match the automounter prefix in a directory name." @@ -2026,80 +2100,64 @@ if you want to permanently change your home directory after having started Emacs, set `abbreviated-home-dir' to nil so it will be recalculated)." ;; Get rid of the prefixes added by the automounter. (save-match-data ;FIXME: Why? - (if (and automount-dir-prefix - (string-match automount-dir-prefix filename) - (file-exists-p (file-name-directory - (substring filename (1- (match-end 0)))))) - (setq filename (substring filename (1- (match-end 0))))) - ;; Avoid treating /home/foo as /home/Foo during `~' substitution. - (let ((case-fold-search (file-name-case-insensitive-p filename))) - ;; If any elt of directory-abbrev-alist matches this name, - ;; abbreviate accordingly. - (dolist (dir-abbrev directory-abbrev-alist) - (if (string-match (car dir-abbrev) filename) - (setq filename - (concat (cdr dir-abbrev) - (substring filename (match-end 0)))))) - ;; Compute and save the abbreviated homedir name. - ;; We defer computing this until the first time it's needed, to - ;; give time for directory-abbrev-alist to be set properly. - ;; We include a slash at the end, to avoid spurious matches - ;; such as `/usr/foobar' when the home dir is `/usr/foo'. - (unless abbreviated-home-dir - (put 'abbreviated-home-dir 'home (expand-file-name "~")) - (setq abbreviated-home-dir - (let* ((abbreviated-home-dir "\\`\\'.") ;Impossible regexp. - (regexp - (concat "\\`" - (regexp-quote - (abbreviate-file-name - (get 'abbreviated-home-dir 'home))) - "\\(/\\|\\'\\)"))) - ;; Depending on whether default-directory does or - ;; doesn't include non-ASCII characters, the value - ;; of abbreviated-home-dir could be multibyte or - ;; unibyte. In the latter case, we need to decode - ;; it. Note that this function is called for the - ;; first time (from startup.el) when - ;; locale-coding-system is already set up. - (if (multibyte-string-p regexp) - regexp - (decode-coding-string regexp - (if (eq system-type 'windows-nt) - 'utf-8 - locale-coding-system)))))) - - ;; If FILENAME starts with the abbreviated homedir, - ;; and ~ hasn't changed since abbreviated-home-dir was set, - ;; make it start with `~' instead. - ;; If ~ has changed, we ignore abbreviated-home-dir rather than - ;; invalidating it, on the assumption that a change in HOME - ;; is likely temporary (eg for testing). - ;; FIXME Is it even worth caching abbreviated-home-dir? - ;; Ref: https://debbugs.gnu.org/19657#20 - (let (mb1) - (if (and (string-match abbreviated-home-dir filename) - (setq mb1 (match-beginning 1)) - ;; If the home dir is just /, don't change it. - (not (and (= (match-end 0) 1) - (= (aref filename 0) ?/))) - ;; MS-DOS root directories can come with a drive letter; - ;; Novell Netware allows drive letters beyond `Z:'. - (not (and (memq system-type '(ms-dos windows-nt cygwin)) - (string-match "\\`[a-zA-`]:/\\'" filename))) - (equal (get 'abbreviated-home-dir 'home) - (expand-file-name "~"))) - (setq filename - (concat "~" - (substring filename mb1)))) - filename)))) + (if-let ((handler (find-file-name-handler filename 'abbreviate-file-name))) + (funcall handler 'abbreviate-file-name filename) + (if (and automount-dir-prefix + (string-match automount-dir-prefix filename) + (file-exists-p (file-name-directory + (substring filename (1- (match-end 0)))))) + (setq filename (substring filename (1- (match-end 0))))) + ;; Avoid treating /home/foo as /home/Foo during `~' substitution. + (let ((case-fold-search (file-name-case-insensitive-p filename))) + ;; If any elt of directory-abbrev-alist matches this name, + ;; abbreviate accordingly. + (setq filename (directory-abbrev-apply filename)) + + ;; Compute and save the abbreviated homedir name. + ;; We defer computing this until the first time it's needed, to + ;; give time for directory-abbrev-alist to be set properly. + (unless abbreviated-home-dir + (put 'abbreviated-home-dir 'home (expand-file-name "~")) + (setq abbreviated-home-dir + (directory-abbrev-make-regexp + (let ((abbreviated-home-dir "\\`\\'.")) ;Impossible regexp. + (abbreviate-file-name + (get 'abbreviated-home-dir 'home)))))) + + ;; If FILENAME starts with the abbreviated homedir, + ;; and ~ hasn't changed since abbreviated-home-dir was set, + ;; make it start with `~' instead. + ;; If ~ has changed, we ignore abbreviated-home-dir rather than + ;; invalidating it, on the assumption that a change in HOME + ;; is likely temporary (eg for testing). + ;; FIXME Is it even worth caching abbreviated-home-dir? + ;; Ref: https://debbugs.gnu.org/19657#20 + (let (mb1) + (if (and (string-match abbreviated-home-dir filename) + (setq mb1 (match-beginning 1)) + ;; If the home dir is just /, don't change it. + (not (and (= (match-end 0) 1) + (= (aref filename 0) ?/))) + ;; MS-DOS root directories can come with a drive letter; + ;; Novell Netware allows drive letters beyond `Z:'. + (not (and (memq system-type '(ms-dos windows-nt cygwin)) + (string-match "\\`[a-zA-`]:/\\'" filename))) + (equal (get 'abbreviated-home-dir 'home) + (expand-file-name "~"))) + (setq filename + (concat "~" + (substring filename mb1)))) + filename))))) (defun find-buffer-visiting (filename &optional predicate) "Return the buffer visiting file FILENAME (a string). This is like `get-file-buffer', except that it checks for any buffer visiting the same file, possibly under a different name. + If PREDICATE is non-nil, only buffers satisfying it are eligible, -and others are ignored. +and others are ignored. PREDICATE is called with the buffer as +the only argument, but not with the buffer as the current buffer. + If there is no such live buffer, return nil." (let ((predicate (or predicate #'identity)) (truename (abbreviate-file-name (file-truename filename)))) @@ -2320,7 +2378,16 @@ the various files." (attributes (file-attributes truename)) (number (nthcdr 10 attributes)) ;; Find any buffer for a file that has same truename. - (other (and (not buf) (find-buffer-visiting filename)))) + (other (and (not buf) + (find-buffer-visiting + filename + ;; We want to filter out buffers that we've + ;; visited via symlinks and the like, where + ;; the symlink no longer exists. + (lambda (buffer) + (let ((file (buffer-local-value + 'buffer-file-name buffer))) + (and file (file-exists-p file)))))))) ;; Let user know if there is a buffer with the same truename. (if other (progn @@ -2756,8 +2823,7 @@ since only a single case-insensitive search through the alist is made." (defvar auto-mode-alist ;; Note: The entries for the modes defined in cc-mode.el (c-mode, ;; c++-mode, java-mode and more) are added through autoload - ;; directives in that file. That way is discouraged since it - ;; spreads out the definition of the initial value. + ;; directives in that file. (mapcar (lambda (elt) (cons (purecopy (car elt)) (cdr elt))) @@ -2772,6 +2838,7 @@ since only a single case-insensitive search through the alist is made." ("\\.gif\\'" . image-mode) ("\\.png\\'" . image-mode) ("\\.jpe?g\\'" . image-mode) + ("\\.webp\\'" . image-mode) ("\\.te?xt\\'" . text-mode) ("\\.[tT]e[xX]\\'" . tex-mode) ("\\.ins\\'" . tex-mode) ;Installation files for TeX packages. @@ -2781,6 +2848,9 @@ since only a single case-insensitive search through the alist is made." ;; .dir-locals.el is not really Elisp. Could use the ;; `dir-locals-file' constant if it weren't defined below. ("\\.dir-locals\\(?:-2\\)?\\.el\\'" . lisp-data-mode) + ("\\.eld\\'" . lisp-data-mode) + ;; FIXME: The lisp-data-mode files below should use the `.eld' extension + ;; (or a -*- mode cookie) so we don't need ad-hoc entries here. ("eww-bookmarks\\'" . lisp-data-mode) ("tramp\\'" . lisp-data-mode) ("/archive-contents\\'" . lisp-data-mode) @@ -2897,6 +2967,7 @@ ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|RAR\\|CBR\\|7Z\\|SQUASHFS\\)\\'" . ("\\.[ds]?va?h?\\'" . verilog-mode) ("\\.by\\'" . bovine-grammar-mode) ("\\.wy\\'" . wisent-grammar-mode) + ("\\.erts\\'" . erts-mode) ;; .emacs or .gnus or .viper following a directory delimiter in ;; Unix or MS-DOS syntax. ("[:/\\]\\..*\\(emacs\\|gnus\\|viper\\)\\'" . emacs-lisp-mode) @@ -2926,7 +2997,7 @@ ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|RAR\\|CBR\\|7Z\\|SQUASHFS\\)\\'" . ("\\.\\(diffs?\\|patch\\|rej\\)\\'" . diff-mode) ("\\.\\(dif\\|pat\\)\\'" . diff-mode) ; for MS-DOS ("\\.[eE]?[pP][sS]\\'" . ps-mode) - ("\\.\\(?:PDF\\|DVI\\|OD[FGPST]\\|DOCX\\|XLSX?\\|PPTX?\\|pdf\\|djvu\\|dvi\\|od[fgpst]\\|docx\\|xlsx?\\|pptx?\\)\\'" . doc-view-mode-maybe) + ("\\.\\(?:PDF\\|EPUB\\|CBZ\\|FB2\\|O?XPS\\|DVI\\|OD[FGPST]\\|DOCX\\|XLSX?\\|PPTX?\\|pdf\\|epub\\|cbz\\|fb2\\|o?xps\\|djvu\\|dvi\\|od[fgpst]\\|docx\\|xlsx?\\|pptx?\\)\\'" . doc-view-mode-maybe) ("configure\\.\\(ac\\|in\\)\\'" . autoconf-mode) ("\\.s\\(v\\|iv\\|ieve\\)\\'" . sieve-mode) ("BROWSE\\'" . ebrowse-tree-mode) @@ -2989,6 +3060,7 @@ ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|RAR\\|CBR\\|7Z\\|SQUASHFS\\)\\'" . ("\\.dng\\'" . image-mode) ("\\.dpx\\'" . image-mode) ("\\.fax\\'" . image-mode) + ("\\.heic\\'" . image-mode) ("\\.hrz\\'" . image-mode) ("\\.icb\\'" . image-mode) ("\\.icc\\'" . image-mode) @@ -3052,8 +3124,7 @@ and `magic-mode-alist', which determines modes based on file contents.") (defvar interpreter-mode-alist ;; Note: The entries for the modes defined in cc-mode.el (awk-mode ;; and pike-mode) are added through autoload directives in that - ;; file. That way is discouraged since it spreads out the - ;; definition of the initial value. + ;; file. (mapcar (lambda (l) (cons (purecopy (car l)) (cdr l))) @@ -3091,9 +3162,6 @@ major mode MODE. See also `auto-mode-alist'.") -(define-obsolete-variable-alias 'inhibit-first-line-modes-regexps - 'inhibit-file-local-variables-regexps "24.1") - ;; TODO really this should be a list of modes (eg tar-mode), not regexps, ;; because we are duplicating info from auto-mode-alist. ;; TODO many elements of this list are also in auto-coding-alist. @@ -3114,9 +3182,6 @@ member files with their own local variable sections, which are not appropriate for the containing file. The function `inhibit-local-variables-p' uses this.") -(define-obsolete-variable-alias 'inhibit-first-line-modes-suffixes - 'inhibit-local-variables-suffixes "24.1") - (defvar inhibit-local-variables-suffixes nil "List of regexps matching suffixes to remove from file names. The function `inhibit-local-variables-p' uses this: when checking @@ -3245,6 +3310,7 @@ extra checks should be done." (let ((case-fold-search t)) (assoc-default name alist 'string-match)))))) (if (and mode + (not (functionp mode)) (consp mode) (cadr mode)) (setq mode (car mode) @@ -3637,7 +3703,7 @@ DIR-NAME is the name of the associated directory. Otherwise it is nil." (cond (unsafe-vars (insert "The local variables list in " name - "\ncontains values that may not be safe (*)" + "\nor .dir-locals.el contains values that may not be safe (*)" (if risky-vars ", and variables that are risky (**)." "."))) @@ -3736,8 +3802,8 @@ return as the symbol specifying the mode." (while (not (or (and (eq handle-mode t) result) (>= (point) end))) (unless (looking-at hack-local-variable-regexp) - (message "Malformed mode-line: %S" - (buffer-substring-no-properties (point) end)) + (message "Malformed mode-line: %S in buffer %S" + (buffer-substring-no-properties (point) end) (buffer-name)) (throw 'malformed-line nil)) (goto-char (match-end 0)) ;; There used to be a downcase here, @@ -3964,22 +4030,21 @@ major-mode." ;; Discard the prefix. (if (looking-at prefix) (delete-region (point) (match-end 0)) - (error "Local variables entry is missing the prefix")) + (user-error "Local variables entry is missing the prefix")) (end-of-line) ;; Discard the suffix. (if (looking-back suffix (line-beginning-position)) (delete-region (match-beginning 0) (point)) - (error "Local variables entry is missing the suffix")) + (user-error "Local variables entry is missing the suffix")) (forward-line 1)) (goto-char (point-min)) - (while (not (or (eobp) - (and (eq handle-mode t) result))) + (while (not (eobp)) ;; Find the variable name; (unless (looking-at hack-local-variable-regexp) - (error "Malformed local variable line: %S" - (buffer-substring-no-properties - (point) (line-end-position)))) + (user-error "Malformed local variable line: %S" + (buffer-substring-no-properties + (point) (line-end-position)))) (goto-char (match-end 1)) (let* ((str (match-string 1)) (var (intern str)) @@ -4000,7 +4065,8 @@ major-mode." (not (string-match "-minor\\'" (setq val2 (downcase (symbol-name val))))) - (setq result (intern (concat val2 "-mode")))) + ;; Allow several mode: elements. + (push (intern (concat val2 "-mode")) result)) (cond ((eq var 'coding)) ((eq var 'lexical-binding) (unless hack-local-variables--warned-lexical @@ -4024,7 +4090,10 @@ major-mode." val) result)))))) (forward-line 1))))))) - result)) + (if (eq handle-mode t) + ;; Return the final mode: setting that's defined. + (car (seq-filter #'fboundp result)) + result))) (defun hack-local-variables-apply () "Apply the elements of `file-local-variables-alist'. @@ -4058,7 +4127,8 @@ It is safe if any of these conditions are met: (and (functionp safep) ;; If the function signals an error, that means it ;; can't assure us that the value is safe. - (with-demoted-errors (funcall safep val)))))) + (with-demoted-errors "Local variable error: %S" + (funcall safep val)))))) (defun risky-local-variable-p (sym &optional _ignored) "Non-nil if SYM could be dangerous as a file-local variable. @@ -4083,11 +4153,8 @@ It is dangerous if either of these conditions are met: (defun hack-one-local-variable-quotep (exp) (and (consp exp) (eq (car exp) 'quote) (consp (cdr exp)))) -(defun hack-one-local-variable-constantp (exp) - (or (and (not (symbolp exp)) (not (consp exp))) - (memq exp '(t nil)) - (keywordp exp) - (hack-one-local-variable-quotep exp))) +(define-obsolete-function-alias 'hack-one-local-variable-constantp + #'macroexp-const-p "29.1") (defun hack-one-local-variable-eval-safep (exp) "Return non-nil if it is safe to eval EXP when it is found in a file." @@ -4125,7 +4192,7 @@ It is dangerous if either of these conditions are met: (cond ((eq prop t) (let ((ok t)) (dolist (arg (cdr exp)) - (unless (hack-one-local-variable-constantp arg) + (unless (macroexp-const-p arg) (setq ok nil))) ok)) ((functionp prop) @@ -4475,7 +4542,7 @@ Return the new class name, which is a symbol named DIR." (with-demoted-errors "Error reading dir-locals: %S" (dolist (file files) (let ((file-time (file-attribute-modification-time - (file-attributes file)))) + (file-attributes (file-chase-links file))))) (if (time-less-p latest file-time) (setq latest file-time))) (with-temp-buffer @@ -4747,7 +4814,6 @@ using \\<minibuffer-local-map>\\[next-history-element]. If optional second arg CONFIRM is non-nil, this function asks for confirmation before overwriting an existing file. Interactively, confirmation is required unless you supply a prefix argument." -;; (interactive "FWrite file: ") (interactive (list (if buffer-file-name (read-file-name "Write file: " @@ -4758,33 +4824,64 @@ Interactively, confirmation is required unless you supply a prefix argument." default-directory) nil nil)) (not current-prefix-arg))) - (or (null filename) (string-equal filename "") - (progn - ;; If arg is a directory name, - ;; use the default file name, but in that directory. - (if (directory-name-p filename) - (setq filename (concat filename - (file-name-nondirectory - (or buffer-file-name (buffer-name)))))) - (and confirm - (file-exists-p filename) - ;; NS does its own confirm dialog. - (not (and (eq (framep-on-display) 'ns) - (listp last-nonmenu-event) - use-dialog-box)) - (or (y-or-n-p (format-message - "File `%s' exists; overwrite? " filename)) - (user-error "Canceled"))) - (set-visited-file-name filename (not confirm)))) - (set-buffer-modified-p t) - ;; Make buffer writable if file is writable. - (and buffer-file-name - (file-writable-p buffer-file-name) - (setq buffer-read-only nil)) - (save-buffer) - ;; It's likely that the VC status at the new location is different from - ;; the one at the old location. - (vc-refresh-state)) + (let ((old-modes + (and buffer-file-name + ;; File may have gone away; ignore errors in that case. + (ignore-errors (file-modes buffer-file-name))))) + (or (null filename) (string-equal filename "") + (progn + ;; If arg is a directory name, + ;; use the default file name, but in that directory. + (if (directory-name-p filename) + (setq filename (concat filename + (file-name-nondirectory + (or buffer-file-name (buffer-name)))))) + (and confirm + (file-exists-p filename) + ;; NS does its own confirm dialog. + (not (and (eq (framep-on-display) 'ns) + (listp last-nonmenu-event) + use-dialog-box)) + (or (y-or-n-p (format-message + "File `%s' exists; overwrite? " filename)) + (user-error "Canceled"))) + (set-visited-file-name filename (not confirm)))) + (set-buffer-modified-p t) + ;; Make buffer writable if file is writable. + (and buffer-file-name + (file-writable-p buffer-file-name) + (setq buffer-read-only nil)) + (save-buffer) + ;; If the old file was executable, then make the new file + ;; executable, too. + (when (and old-modes + (not (zerop (logand #o111 old-modes)))) + (set-file-modes buffer-file-name + (logior (logand #o111 old-modes) + (file-modes buffer-file-name)))) + ;; It's likely that the VC status at the new location is different from + ;; the one at the old location. + (vc-refresh-state))) + +(defun rename-visited-file (new-location) + "Rename the file visited by the current buffer to NEW-LOCATION. +This command also sets the visited file name. If the buffer +isn't visiting any file, that's all it does. + +Interactively, this prompts for NEW-LOCATION." + (interactive + (list (if buffer-file-name + (read-file-name "Rename visited file to: ") + (read-file-name "Set visited file name: " + default-directory + (expand-file-name + (file-name-nondirectory (buffer-name)) + default-directory))))) + (when (and buffer-file-name + (file-exists-p buffer-file-name)) + (rename-file buffer-file-name new-location)) + (set-visited-file-name new-location nil t)) + (defun file-extended-attributes (filename) "Return an alist of extended attributes of file FILENAME. @@ -4927,7 +5024,7 @@ BACKUPNAME is the backup file name, which is the old file renamed." nil))) ;; If set-file-extended-attributes fails, fall back on set-file-modes. (unless (and extended-attributes - (with-demoted-errors + (with-demoted-errors "Error setting attributes: %S" (set-file-extended-attributes to-name extended-attributes))) (and modes (set-file-modes to-name (logand modes #o1777) nofollow-flag))))) @@ -5059,6 +5156,51 @@ See also `file-name-sans-extension'." (file-name-sans-extension (file-name-nondirectory (or filename (buffer-file-name))))) +(defun file-name-split (filename) + "Return a list of all the components of FILENAME. +On most systems, this will be true: + + (equal (string-join (file-name-split filename) \"/\") filename)" + (let ((components nil)) + ;; If this is a directory file name, then we have a null file name + ;; at the end. + (when (directory-name-p filename) + (push "" components) + (setq filename (directory-file-name filename))) + ;; Loop, chopping off components. + (while (length> filename 0) + (push (file-name-nondirectory filename) components) + (let ((dir (file-name-directory filename))) + (setq filename (and dir (directory-file-name dir))) + ;; If there's nothing left to peel off, we're at the root and + ;; we can stop. + (when (and dir (equal dir filename)) + (push (if (equal dir "") "" + ;; On Windows, the first component might be "c:" or + ;; the like. + (substring dir 0 -1)) + components) + (setq filename nil)))) + components)) + +(defun file-parent-directory (filename) + "Return the directory name of the parent directory of FILENAME. +If FILENAME is at the root of the filesystem, return nil. +If FILENAME is relative, it is interpreted to be relative +to `default-directory', and the result will also be relative." + (let* ((expanded-filename (expand-file-name filename)) + (parent (file-name-directory (directory-file-name expanded-filename)))) + (cond + ;; filename is at top-level, therefore no parent + ((or (null parent) + (file-equal-p parent expanded-filename)) + nil) + ;; filename is relative, return relative parent + ((not (file-name-absolute-p filename)) + (file-relative-name parent)) + (t + parent)))) + (defcustom make-backup-file-name-function #'make-backup-file-name--default-function "A function that `make-backup-file-name' uses to create backup file names. @@ -5310,7 +5452,14 @@ on a DOS/Windows machine, it returns FILENAME in expanded form." (let ((fremote (file-remote-p filename)) (dremote (file-remote-p directory)) (fold-case (or (file-name-case-insensitive-p filename) - read-file-name-completion-ignore-case))) + ;; During bootstrap, it can happen that + ;; `read-file-name-completion-ignore-case' is + ;; not defined yet. + ;; FIXME: `read-file-name-completion-ignore-case' is + ;; a user-config which we shouldn't trust to reflect + ;; the actual file system's semantics. + (and (boundp 'read-file-name-completion-ignore-case) + read-file-name-completion-ignore-case)))) (if ;; Conditions for separate trees (or ;; Test for different filesystems on DOS/Windows @@ -5525,7 +5674,8 @@ Before and after saving the buffer, this function runs (goto-char (point-max)) (insert ?\n)))) ;; Don't let errors prevent saving the buffer. - (with-demoted-errors (run-hooks 'before-save-hook)) + (with-demoted-errors "Before-save hook error: %S" + (run-hooks 'before-save-hook)) ;; Give `write-contents-functions' a chance to ;; short-circuit the whole process. (unless (run-hook-with-args-until-success 'write-contents-functions) @@ -5573,7 +5723,7 @@ Before and after saving the buffer, this function runs (condition-case () (progn (unless - (with-demoted-errors + (with-demoted-errors "Error setting file modes: %S" (set-file-modes buffer-file-name (car setmodes))) (set-file-extended-attributes buffer-file-name (nth 1 setmodes)))) @@ -5661,11 +5811,14 @@ Before and after saving the buffer, this function runs (signal (car err) (cdr err)))) ;; Since we have created an entirely new file, ;; make sure it gets the right permission bits set. - (setq setmodes (or setmodes - (list (or (file-modes buffer-file-name) - (logand ?\666 (default-file-modes))) - (file-extended-attributes buffer-file-name) - buffer-file-name))) + (setq setmodes + (or setmodes + (list (or (file-modes buffer-file-name) + (logand ?\666 (default-file-modes))) + (with-demoted-errors + "Error getting extended attributes: %s" + (file-extended-attributes buffer-file-name)) + buffer-file-name))) ;; We succeeded in writing the temp file, ;; so rename it. (rename-file tempname @@ -5682,13 +5835,16 @@ Before and after saving the buffer, this function runs ;; (setmodes is set) because that says we're superseding. (cond ((and tempsetmodes (not setmodes)) ;; Change the mode back, after writing. - (setq setmodes (list (file-modes buffer-file-name) - (file-extended-attributes buffer-file-name) - buffer-file-name)) + (setq setmodes + (list (file-modes buffer-file-name) + (with-demoted-errors + "Error getting extended attributes: %s" + (file-extended-attributes buffer-file-name)) + buffer-file-name)) ;; If set-file-extended-attributes fails, fall back on ;; set-file-modes. (unless - (with-demoted-errors + (with-demoted-errors "Error setting attributes: %s" (set-file-extended-attributes buffer-file-name (nth 1 setmodes))) (set-file-modes buffer-file-name @@ -5783,15 +5939,50 @@ of the directory that was default during command invocation." (lambda () (file-in-directory-p default-directory root)))) (put 'save-some-buffers-root 'save-some-buffers-function t) +(defun files--buffers-needing-to-be-saved (pred) + "Return a list of buffers to save according to PRED. +See `save-some-buffers' for PRED values." + (let ((buffers + (mapcar (lambda (buffer) + (if + ;; Note that killing some buffers may kill others via + ;; hooks (e.g. Rmail and its viewing buffer). + (and (buffer-live-p buffer) + (buffer-modified-p buffer) + (not (buffer-base-buffer buffer)) + (or + (buffer-file-name buffer) + (with-current-buffer buffer + (or (eq buffer-offer-save 'always) + (and pred buffer-offer-save + (> (buffer-size) 0))))) + (or (not (functionp pred)) + (with-current-buffer buffer + (funcall pred)))) + buffer)) + (buffer-list)))) + (delq nil buffers))) + +(defvar save-some-buffers-functions nil + "Functions to be run by `save-some-buffers' after saving the buffers. +The functions can be called in two \"modes\", depending on the +first argument. If the first argument is `query', then the +function should return non-nil if there is something to be +saved (but it should not actually save anything). + +If the first argument is something else, then the function should +save according to the value of the second argument, which is the +ARG argument from `save-some-buffers'.") + (defun save-some-buffers (&optional arg pred) "Save some modified file-visiting buffers. Asks user about each one. -You can answer `y' or SPC to save, `n' or DEL not to save, `C-r' +You can answer \\`y' or \\`SPC' to save, \\`n' or \\`DEL' not to save, \\`C-r' to look at the buffer in question with `view-buffer' before -deciding, `d' to view the differences using -`diff-buffer-with-file', `!' to save the buffer and all remaining -buffers without any further querying, `.' to save only the -current buffer and skip the remaining ones and `q' or RET to exit -the function without saving any more buffers. `C-h' displays a +deciding, \\`d' to view the differences using +`diff-buffer-with-file', \\`!' to save the buffer and all remaining +buffers without any further querying, \\`.' to save only the +current buffer and skip the remaining ones and \\`q' or \\`RET' to exit +the function without saving any more buffers. \\`C-h' displays a help message describing these options. This command first saves any buffers where `buffer-save-without-query' is @@ -5807,7 +5998,10 @@ should return non-nil if that buffer should be considered. PRED defaults to the value of `save-some-buffers-default-predicate'. See `save-some-buffers-action-alist' if you want to -change the additional actions you can take on files." +change the additional actions you can take on files. + +The functions in `save-some-buffers-functions' will be called +after saving the buffers." (interactive "P") (unless pred (setq pred @@ -5823,7 +6017,7 @@ change the additional actions you can take on files." (lambda (buffer) (setq switched-buffer buffer))) queried autosaved-buffers - files-done abbrevs-done) + files-done inhibit-message) (unwind-protect (save-window-excursion (dolist (buffer (buffer-list)) @@ -5839,64 +6033,42 @@ change the additional actions you can take on files." (setq files-done (map-y-or-n-p (lambda (buffer) - ;; Note that killing some buffers may kill others via - ;; hooks (e.g. Rmail and its viewing buffer). - (and (buffer-live-p buffer) - (buffer-modified-p buffer) - (not (buffer-base-buffer buffer)) - (or - (buffer-file-name buffer) - (with-current-buffer buffer - (or (eq buffer-offer-save 'always) - (and pred buffer-offer-save - (> (buffer-size) 0))))) - (or (not (functionp pred)) - (with-current-buffer buffer (funcall pred))) - (if arg - t - (setq queried t) - (if (buffer-file-name buffer) - (if (or - (equal (buffer-name buffer) - (file-name-nondirectory - (buffer-file-name buffer))) - (string-match - (concat "\\<" - (regexp-quote - (file-name-nondirectory - (buffer-file-name buffer))) - "<[^>]*>\\'") - (buffer-name buffer))) - ;; The buffer name is similar to the - ;; file name. - (format "Save file %s? " - (buffer-file-name buffer)) - ;; The buffer and file names are - ;; dissimilar; display both. - (format "Save file %s (buffer %s)? " - (buffer-file-name buffer) - (buffer-name buffer))) - ;; No file name - (format "Save buffer %s? " (buffer-name buffer)))))) + (if arg + t + (setq queried t) + (if (buffer-file-name buffer) + (if (or + (equal (buffer-name buffer) + (file-name-nondirectory + (buffer-file-name buffer))) + (string-match + (concat "\\<" + (regexp-quote + (file-name-nondirectory + (buffer-file-name buffer))) + "<[^>]*>\\'") + (buffer-name buffer))) + ;; The buffer name is similar to the file + ;; name. + (format "Save file %s? " + (buffer-file-name buffer)) + ;; The buffer and file names are dissimilar; + ;; display both. + (format "Save file %s (buffer %s)? " + (buffer-file-name buffer) + (buffer-name buffer))) + ;; No file name. + (format "Save buffer %s? " (buffer-name buffer))))) (lambda (buffer) (with-current-buffer buffer (save-buffer))) - (buffer-list) + (files--buffers-needing-to-be-saved pred) '("buffer" "buffers" "save") save-some-buffers-action-alist)) - ;; Maybe to save abbrevs, and record whether - ;; we either saved them or asked to. - (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)) - ;; Don't keep bothering user if he says no. - (setq abbrevs-changed nil) - (setq abbrevs-done t))) - (or queried (> files-done 0) abbrevs-done + ;; Allow other things to be saved at this time, like abbrevs. + (dolist (func save-some-buffers-functions) + (setq inhibit-message (or (funcall func nil arg) inhibit-message))) + (or queried (> files-done 0) inhibit-message (cond ((null autosaved-buffers) (when (called-interactively-p 'any) @@ -6192,6 +6364,29 @@ Return nil if DIR is not an existing directory." (unless mismatch (file-equal-p root dir))))))) +(defvar file-has-changed-p--hash-table (make-hash-table :test #'equal) + "Internal variable used by `file-has-changed-p'.") + +(defun file-has-changed-p (file &optional tag) + "Return non-nil if FILE has changed. +The size and modification time of FILE are compared to the size +and modification time of the same FILE during a previous +invocation of `file-has-changed-p'. Thus, the first invocation +of `file-has-changed-p' always returns non-nil when FILE exists. +The optional argument TAG, which must be a symbol, can be used to +limit the comparison to invocations with identical tags; it can be +the symbol of the calling function, for example." + (let* ((file (directory-file-name (expand-file-name file))) + (remote-file-name-inhibit-cache t) + (fileattr (file-attributes file 'integer)) + (attr (and fileattr + (cons (file-attribute-size fileattr) + (file-attribute-modification-time fileattr)))) + (sym (concat (symbol-name tag) "@" file)) + (cachedattr (gethash sym file-has-changed-p--hash-table))) + (when (not (equal attr cachedattr)) + (puthash sym attr file-has-changed-p--hash-table)))) + (defun copy-directory (directory newname &optional keep-time parents copy-contents) "Copy DIRECTORY to NEWNAME. Both args must be strings. This function always sets the file modes of the output files to match @@ -7114,13 +7309,22 @@ by `sh' are supported." :type 'string :group 'dired) -(defun file-expand-wildcards (pattern &optional full) +(defun file-expand-wildcards (pattern &optional full regexp) "Expand (a.k.a. \"glob\") file-name wildcard pattern PATTERN. This returns a list of file names that match PATTERN. The returned list of file names is sorted in the `string<' order. -If PATTERN is written as an absolute file name, -the expansions in the returned list are also absolute. +PATTERN is, by default, a \"glob\"/wildcard string, e.g., +\"/tmp/*.png\" or \"/*/*/foo.png\", but can also be a regular +expression if the optional REGEXP parameter is non-nil. In any +case, the matches are applied per sub-directory, so a match can't +span a parent/sub directory, which means that a regexp bit can't +contain the \"/\" character. + +The returned list of file names is sorted in the `string<' order. + +If PATTERN is written as an absolute file name, the expansions in +the returned list are also absolute. If PATTERN is written as a relative file name, it is interpreted relative to the current `default-directory'. @@ -7135,7 +7339,8 @@ default directory. However, if FULL is non-nil, they are absolute." (dirs (if (and dirpart (string-match "[[*?]" (file-local-name dirpart))) (mapcar 'file-name-as-directory - (file-expand-wildcards (directory-file-name dirpart))) + (file-expand-wildcards + (directory-file-name dirpart) nil regexp)) (list dirpart))) contents) (dolist (dir dirs) @@ -7144,21 +7349,116 @@ default directory. However, if FULL is non-nil, they are absolute." (let ((this-dir-contents ;; Filter out "." and ".." (delq nil - (mapcar #'(lambda (name) - (unless (string-match "\\`\\.\\.?\\'" - (file-name-nondirectory name)) - name)) - (directory-files (or dir ".") full - (wildcard-to-regexp nondir)))))) + (mapcar (lambda (name) + (unless (string-match "\\`\\.\\.?\\'" + (file-name-nondirectory name)) + name)) + (directory-files + (or dir ".") full + (if regexp + ;; We're matching each file name + ;; element separately. + (concat "\\`" nondir "\\'") + (wildcard-to-regexp nondir))))))) (setq contents (nconc (if (and dir (not full)) - (mapcar #'(lambda (name) (concat dir name)) + (mapcar (lambda (name) (concat dir name)) this-dir-contents) this-dir-contents) contents))))) contents))) +(defcustom find-sibling-rules nil + "Rules for finding \"sibling\" files. +This is used by the `find-sibling-file' command. + +This variable is a list of (MATCH EXPANSION...) elements. + +MATCH is a regular expression that should match a file name that +has a sibling. It can contain sub-expressions that will be used +in EXPANSIONS. + +EXPANSION is a string that matches file names. For instance, to +define \".h\" files as siblings of any \".c\", you could say: + + (\"\\\\([^/]+\\\\)\\\\.c\\\\\\='\" \"\\\\1.h\") + +MATCH and EXPANSION can also be fuller paths. For instance, if +you want to define other versions of a project as being sibling +files, you could say something like: + + (\"src/emacs/[^/]+/\\\\(.*\\\\)\\\\\\='\" \"src/emacs/.*/\\\\1\\\\\\='\") + +In this example, if you're in src/emacs/emacs-27/lisp/abbrev.el, +and you an src/emacs/emacs-28/lisp/abbrev.el file exists, it's +now defined as a sibling." + :type 'sexp + :version "29.1") + +(defun find-sibling-file (file) + "Visit a \"sibling\" file of FILE. +When called interactively, FILE is the currently visited file. + +The \"sibling\" file is defined by the `find-sibling-rules' variable." + (interactive (progn + (unless buffer-file-name + (user-error "Not visiting a file")) + (list buffer-file-name))) + (unless find-sibling-rules + (user-error "The `find-sibling-rules' variable has not been configured")) + (let ((siblings (find-sibling-file-search (expand-file-name file) + find-sibling-rules))) + (cond + ((null siblings) + (user-error "Couldn't find any sibling files")) + ((length= siblings 1) + (find-file (car siblings))) + (t + (let ((relatives (mapcar (lambda (sibling) + (file-relative-name + sibling (file-name-directory file))) + siblings))) + (find-file + (completing-read (format-prompt "Find file" (car relatives)) + relatives nil t nil nil (car relatives)))))))) + +(defun find-sibling-file-search (file &optional rules) + "Return a list of FILE's \"siblings\" +RULES should be a list on the form defined by `find-sibling-rules' (which +see), and if nil, defaults to `find-sibling-rules'." + (let ((results nil)) + (pcase-dolist (`(,match . ,expansions) (or rules find-sibling-rules)) + ;; Go through the list and find matches. + (when (string-match match file) + (let ((match-data (match-data))) + (dolist (expansion expansions) + (let ((start 0)) + ;; Expand \\1 forms in the expansions. + (while (string-match "\\\\\\([&0-9]+\\)" expansion start) + (let ((index (string-to-number (match-string 1 expansion)))) + (setq start (match-end 0) + expansion + (replace-match + (substring file + (elt match-data (* index 2)) + (elt match-data (1+ (* index 2)))) + t t expansion))))) + ;; Then see which files we have that are matching. (And + ;; expand from the end of the file's match, since we might + ;; be doing a relative match.) + (let ((default-directory (substring file 0 (car match-data)))) + ;; Keep the first matches first. + (setq results + (nconc + results + (mapcar #'expand-file-name + (file-expand-wildcards expansion nil t))))))))) + ;; Delete the file itself (in case it matched), and remove + ;; duplicates, in case we have several expansions and some match + ;; the same subsets of files. + (delete file (delete-dups results)))) + ;; Let Tramp know that `file-expand-wildcards' does not need an advice. (provide 'files '(remote-wildcards)) @@ -7168,11 +7468,17 @@ DIRNAME is globbed by the shell if necessary. Prefix arg (second arg if noninteractive) means supply -l switch to `ls'. Actions controlled by variables `list-directory-brief-switches' and `list-directory-verbose-switches'." - (interactive (let ((pfx current-prefix-arg)) - (list (read-directory-name (if pfx "List directory (verbose): " - "List directory (brief): ") - nil default-directory nil) - pfx))) + (interactive + (let ((pfx current-prefix-arg)) + (list (read-file-name + (if pfx "List directory (verbose): " + "List directory (brief): ") + nil default-directory + (lambda (file) + (or (file-directory-p file) + (insert-directory-wildcard-in-dir-p + (file-name-as-directory (expand-file-name file)))))) + pfx))) (let ((switches (if verbose list-directory-verbose-switches list-directory-brief-switches)) buffer) @@ -7190,9 +7496,9 @@ and `list-directory-verbose-switches'." ;; Finishing with-output-to-temp-buffer seems to clobber default-directory. (with-current-buffer buffer (setq default-directory - (if (file-directory-p dirname) + (if (file-accessible-directory-p dirname) (file-name-as-directory dirname) - (file-name-directory dirname)))))) + (file-name-directory (directory-file-name dirname))))))) (defun shell-quote-wildcard-pattern (pattern) "Quote characters special to the shell in PATTERN, leave wildcards alone. @@ -7625,21 +7931,7 @@ normally equivalent short `-D' option is just passed on to (if val coding-no-eol coding)) (if val (put-text-property pos (point) - 'dired-filename t))))))) - - (if full-directory-p - ;; Try to insert the amount of free space. - (save-excursion - (goto-char beg) - ;; First find the line to put it on. - (when (re-search-forward "^ *\\(total\\)" nil t) - ;; Replace "total" with "total used in directory" to - ;; avoid confusion. - (replace-match "total used in directory" nil nil nil 1) - (let ((available (get-free-disk-space file))) - (when available - (end-of-line) - (insert " available " available)))))))))) + 'dired-filename t))))))))))) (defun insert-directory-adj-pos (pos error-lines) "Convert `ls --dired' file name position value POS to a buffer position. @@ -7694,18 +7986,34 @@ prompt the user before killing them." :group 'convenience :version "26.1") -(defun save-buffers-kill-emacs (&optional arg) +(defun save-buffers-kill-emacs (&optional arg restart) "Offer to save each buffer, then kill this Emacs process. With prefix ARG, silently save all file-visiting buffers without asking. If there are active processes where `process-query-on-exit-flag' returns non-nil and `confirm-kill-processes' is non-nil, asks whether processes should be killed. + Runs the members of `kill-emacs-query-functions' in turn and stops -if any returns nil. If `confirm-kill-emacs' is non-nil, calls it." +if any returns nil. If `confirm-kill-emacs' is non-nil, calls it. + +If RESTART, restart Emacs after killing the current Emacs process." (interactive "P") ;; Don't use save-some-buffers-default-predicate, because we want ;; to ask about all the buffers before killing Emacs. - (save-some-buffers arg t) + (when (or (files--buffers-needing-to-be-saved t) + (catch 'need-save + (dolist (func save-some-buffers-functions) + (when (funcall func 'query) + (throw 'need-save t))))) + (if (use-dialog-box-p) + (pcase (x-popup-dialog + t `("Unsaved Buffers" + ("Close Without Saving" . no-save) + ("Save All" . save-all) + ("Cancel" . cancel))) + ('cancel (user-error "Exit cancelled")) + ('save-all (save-some-buffers t))) + (save-some-buffers arg t))) (let ((confirm confirm-kill-emacs)) (and (or (not (memq t (mapcar (lambda (buf) @@ -7746,7 +8054,7 @@ if any returns nil. If `confirm-kill-emacs' is non-nil, calls it." (run-hook-with-args-until-failure 'kill-emacs-query-functions) (or (null confirm) (funcall confirm "Really exit Emacs? ")) - (kill-emacs)))) + (kill-emacs nil restart)))) (defun save-buffers-kill-terminal (&optional arg) "Offer to save each buffer, then kill the current connection. @@ -7761,6 +8069,16 @@ only these files will be asked to be saved." (if (frame-parameter nil 'client) (server-save-buffers-kill-terminal arg) (save-buffers-kill-emacs arg))) + +(defun restart-emacs () + "Kill the current Emacs process and start a new one. +This goes through the same shutdown procedure as +`save-buffers-kill-emacs', but instead of killing Emacs and +exiting, it re-executes Emacs (using the same command line +arguments as the running Emacs)." + (interactive) + (save-buffers-kill-emacs nil t)) + ;; We use /: as a prefix to "quote" a file name ;; so that magic file name handlers will not apply to it. @@ -7800,10 +8118,11 @@ only these files will be asked to be saved." ;; Get a list of the indices of the args that are file names. (file-arg-indices (cdr (or (assq operation - '(;; The first seven are special because they + '(;; The first eight 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. + (abbreviate-file-name) (directory-file-name) (expand-file-name) (file-name-as-directory) |