;;; etags.el --- etags facility for Emacs
-;; Copyright (C) 1985, 1986, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1998,
-;; 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1985-1986, 1988-1989, 1992-1996, 1998, 2000-2011 Free Software Foundation, Inc.
;; Author: Roland McGrath <roland@gnu.org>
;; Maintainer: FSF
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
+(eval-when-compile
+ (require 'cl))
(require 'ring)
(require 'button)
If you set this variable, do not also set `tags-table-list'.
Use the `etags' program to make a tags table file.")
;; Make M-x set-variable tags-file-name like M-x visit-tags-table.
-;;;###autoload (put 'tags-file-name 'variable-interactive "fVisit tags table: ")
+;;;###autoload (put 'tags-file-name 'variable-interactive (purecopy "fVisit tags table: "))
+;;;###autoload (put 'tags-file-name 'safe-local-variable 'stringp)
(defgroup etags nil "Tags tables."
:group 'tools)
:type '(repeat file))
;;;###autoload
-(defcustom tags-compression-info-list '("" ".Z" ".bz2" ".gz" ".tgz")
+(defcustom tags-compression-info-list
+ (purecopy '("" ".Z" ".bz2" ".gz" ".xz" ".tgz"))
"*List of extensions tried by etags when jka-compr is used.
An empty string means search the non-compressed file.
These extensions will be tried only if jka-compr was activated
\(i.e. via customize of `auto-compression-mode' or by calling the function
`auto-compression-mode')."
+ :version "24.1" ; added xz
:type '(repeat string)
:group 'etags)
(defun tags-table-mode ()
"Major mode for tags table file buffers."
(interactive)
- (setq major-mode 'tags-table-mode
+ (setq major-mode 'tags-table-mode ;FIXME: Use define-derived-mode.
mode-name "Tags Table"
buffer-undo-list t)
(initialize-new-tags-table))
current-prefix-arg))
(or (stringp file) (signal 'wrong-type-argument (list 'stringp file)))
;; Bind tags-file-name so we can control below whether the local or
- ;; global value gets set. Calling visit-tags-table-buffer will
- ;; initialize a buffer for the file and set tags-file-name to the
+ ;; global value gets set.
;; Calling visit-tags-table-buffer with tags-file-name set to FILE will
;; initialize a buffer for FILE and set tags-file-name to the
;; fully-expanded name.
;; it is initialized as a tag table buffer.
(save-excursion
(tags-verify-table (buffer-file-name table-buffer))))
- (save-excursion
- (set-buffer table-buffer)
+ (with-current-buffer table-buffer
(if (tags-included-tables)
;; Insert the included tables into the list we
;; are processing.
(setq computed (cons (car tables) computed)
table-buffer (get-file-buffer (car tables)))
(if table-buffer
- (save-excursion
- (set-buffer table-buffer)
+ (with-current-buffer table-buffer
(if (tags-included-tables)
;; Insert the included tables into the list we
;; are processing.
(if (get-file-buffer file)
;; The file is already in a buffer. Check for the visited file
;; having changed since we last used it.
- (let (win)
+ (progn
(set-buffer (get-file-buffer file))
- (setq win (or verify-tags-table-function (tags-table-mode)))
+ (or verify-tags-table-function (tags-table-mode))
(if (or (verify-visited-file-modtime (current-buffer))
;; Decide whether to revert the file.
;; revert-without-query can say to revert
(funcall verify-tags-table-function))
(revert-buffer t t)
(tags-table-mode)))
- (and (file-exists-p file)
- (progn
- (set-buffer (find-file-noselect file))
- (or (string= file buffer-file-name)
- ;; find-file-noselect has changed the file name.
- ;; Propagate the change to tags-file-name and tags-table-list.
- (let ((tail (member file tags-table-list)))
- (if tail
- (setcar tail buffer-file-name))
- (if (eq file tags-file-name)
- (setq tags-file-name buffer-file-name))))
- (tags-table-mode)))))
+ (when (file-exists-p file)
+ (let* ((buf (find-file-noselect file))
+ (newfile (buffer-file-name buf)))
+ (unless (string= file newfile)
+ ;; find-file-noselect has changed the file name.
+ ;; Propagate the change to tags-file-name and tags-table-list.
+ (let ((tail (member file tags-table-list)))
+ (if tail (setcar tail newfile)))
+ (if (eq file tags-file-name) (setq tags-file-name newfile)))
+ ;; Only change buffer now that we're done using potentially
+ ;; buffer-local variables.
+ (set-buffer buf)
+ (tags-table-mode)))))
;; Subroutine of visit-tags-table-buffer. Search the current tags tables
;; for one that has tags for THIS-FILE (or that includes a table that
Looks for a tags table that has such tags or that includes a table
that has them. Returns the name of the first such table.
Non-nil CORE-ONLY means check only tags tables that are already in
-buffers. Nil CORE-ONLY is ignored."
+buffers. If CORE-ONLY is nil, it is ignored."
(let ((tables tags-table-computed-list)
(found nil))
;; Loop over the list, looking for a table containing tags for THIS-FILE.
(setq combined-table current-table))))
(message "Making tags completion table for %s...done"
buffer-file-name)
- ;; Cache the result a buffer-local variable.
+ ;; Cache the result in a buffer-local variable.
(setq tags-completion-table combined-table))
(quit (message "Tags completion table construction aborted.")
(setq tags-completion-table nil)))))
-(defun tags-complete-tag (string predicate what)
- "Completion function for tags.
-Does normal `try-completion', but builds `tags-completion-table' on
-demand."
- (save-excursion
- ;; If we need to ask for the tag table, allow that.
- (let ((enable-recursive-minibuffers t))
- (visit-tags-table-buffer))
- (if (eq what t)
- (all-completions string (tags-completion-table) predicate)
- (try-completion string (tags-completion-table) predicate))))
+(defun tags-lazy-completion-table ()
+ (lexical-let ((buf (current-buffer)))
+ (lambda (string pred action)
+ (with-current-buffer buf
+ (save-excursion
+ ;; If we need to ask for the tag table, allow that.
+ (let ((enable-recursive-minibuffers t))
+ (visit-tags-table-buffer))
+ (complete-with-action action (tags-completion-table) string pred))))))
+
+;;;###autoload (defun tags-completion-at-point-function ()
+;;;###autoload (if (or tags-table-list tags-file-name)
+;;;###autoload (progn
+;;;###autoload (load "etags")
+;;;###autoload (tags-completion-at-point-function))))
+
+(defun tags-completion-at-point-function ()
+ "Using tags, return a completion table for the text around point.
+If no tags table is loaded, do nothing and return nil."
+ (when (or tags-table-list tags-file-name)
+ (let ((completion-ignore-case (if (memq tags-case-fold-search '(t nil))
+ tags-case-fold-search
+ case-fold-search))
+ (pattern (funcall (or find-tag-default-function
+ (get major-mode 'find-tag-default-function)
+ 'find-tag-default)))
+ beg)
+ (when pattern
+ (save-excursion
+ (search-backward pattern) ;FIXME: will fail if we're inside pattern.
+ (setq beg (point))
+ (forward-char (length pattern))
+ (list beg (point) (tags-lazy-completion-table)))))))
\f
(defun find-tag-tag (string)
"Read a tag name, with defaulting and completion."
(substring string 0 (string-match "[ :]+\\'" string))
default)
string)
- 'tags-complete-tag
+ (tags-lazy-completion-table)
nil nil nil nil default)))
(if (equal spec "")
(or default (error "There is no default tag"))
(defvar find-tag-history nil) ; Doc string?
;; Dynamic bondage:
-(eval-when-compile
- (defvar etags-case-fold-search)
- (defvar etags-syntax-table))
+(defvar etags-case-fold-search)
+(defvar etags-syntax-table)
;;;###autoload
(defun find-tag-noselect (tagname &optional next-p regexp-p)
(setq last-tag tagname))
;; Record the location so we can pop back to it later.
(let ((marker (make-marker)))
- (save-excursion
- (set-buffer
- ;; find-tag-in-order does the real work.
- (find-tag-in-order
- (if (and next-p last-tag) last-tag tagname)
- (if regexp-p
- find-tag-regexp-search-function
- find-tag-search-function)
- (if regexp-p
- find-tag-regexp-tag-order
- find-tag-tag-order)
- (if regexp-p
- find-tag-regexp-next-line-after-failure-p
- find-tag-next-line-after-failure-p)
- (if regexp-p "matching" "containing")
- (or (not next-p) (not last-tag))))
+ (with-current-buffer
+ ;; find-tag-in-order does the real work.
+ (find-tag-in-order
+ (if (and next-p last-tag) last-tag tagname)
+ (if regexp-p
+ find-tag-regexp-search-function
+ find-tag-search-function)
+ (if regexp-p
+ find-tag-regexp-tag-order
+ find-tag-tag-order)
+ (if regexp-p
+ find-tag-regexp-next-line-after-failure-p
+ find-tag-next-line-after-failure-p)
+ (if regexp-p "matching" "containing")
+ (or (not next-p) (not last-tag)))
(set-marker marker (point))
(run-hooks 'local-find-tag-hook)
(ring-insert tags-location-ring marker)
;; Naive match found. Qualify the match.
(and (funcall (car order) pattern)
;; Make sure it is not a previous qualified match.
- (not (member (set-marker match-marker (save-excursion
- (beginning-of-line)
- (point)))
+ (not (member (set-marker match-marker (point-at-bol))
tag-lines-already-matched))
(throw 'qualified-match-found nil))
(if next-line-after-failure-p
;; Find the end of the tag and record the whole tag text.
(search-forward "\177")
- (setq tag-text (buffer-substring (1- (point))
- (save-excursion (beginning-of-line)
- (point))))
+ (setq tag-text (buffer-substring (1- (point)) (point-at-bol)))
;; If use-explicit is non nil and explicit tag is present, use it as part of
;; return value. Else just skip it.
(setq explicit-start (point))
- (when (and (search-forward "\001" (save-excursion (forward-line 1) (point)) t)
+ (when (and (search-forward "\001" (point-at-bol 2) t)
use-explicit)
(setq tag-text (buffer-substring explicit-start (1- (point)))))
offset found pat)
(if (eq (car tag-info) t)
;; Direct file tag.
- (cond (line (goto-line line))
+ (cond (line (progn (goto-char (point-min))
+ (forward-line (1- line))))
(startpos (goto-char startpos))
(t (error "etags.el BUG: bogus direct file tag")))
;; This constant is 1/2 the initial search window.
;; If no char pos was given, try the given line number.
(or startpos
(if line
- (setq startpos (progn (goto-line line)
+ (setq startpos (progn (goto-char (point-min))
+ (forward-line (1- line))
(point)))))
(or startpos
(setq startpos (point-min)))
(tag-find-file-of-tag (button-get button 'file-path))
(widen)
(funcall goto-func tag-info)))
- 'face 'tags-tag-face
+ 'follow-link t
+ 'face tags-tag-face
'type 'button))
(terpri)
(forward-line 1))
(button-get button 'item)))
'item sn
'face tags-tag-face
+ 'follow-link t
'type 'button)
(terpri))))))
(when (symbolp symbs)
(tag-find-file-of-tag (button-get button 'file-path))
(widen)
(funcall goto-func tag-info)))
- 'face 'tags-tag-face
+ 'follow-link t
+ 'face tags-tag-face
'type 'button)))
(princ (format "- %s" file-label))
(with-current-buffer standard-output
;; Get the local value in the tags table
;; buffer before switching buffers.
(goto-char (point-min)))
- 'face 'tags-tag-face
- 'type 'button))
- ))
+ 'follow-link t
+ 'face tags-tag-face
+ 'type 'button))))
(terpri)
(forward-line 1))
(message nil))
;; This might be a neat idea, but it's too hairy at the moment.
;;(defmacro tags-with-syntax (&rest body)
-;; `(let ((current (current-buffer))
-;; (otable (syntax-table))
-;; (buffer (find-file-noselect (file-of-tag)))
-;; table)
-;; (unwind-protect
-;; (progn
-;; (set-buffer buffer)
-;; (setq table (syntax-table))
-;; (set-buffer current)
-;; (set-syntax-table table)
-;; ,@body)
-;; (set-syntax-table otable))))
+;; `(with-syntax-table
+;; (with-current-buffer (find-file-noselect (file-of-tag))
+;; (syntax-table))
+;; ,@body))
;;(put 'tags-with-syntax 'edebug-form-spec '(&rest form))
;; exact file name match, i.e. searched tag must match complete file
(save-excursion
(beginning-of-line)
(let ((bol (point)))
- (and (search-forward "\177" (save-excursion (end-of-line) (point)) t)
+ (and (search-forward "\177" (line-end-position) t)
(re-search-backward re bol t)))))
\f
(defcustom tags-loop-revert-buffers nil
;; to the beginning of it so perform-replace
;; will see it.
(goto-char (match-beginning 0))))
- tags-loop-operate `(perform-replace ',from ',to t t ',delimited))
+ tags-loop-operate `(perform-replace ',from ',to t t ',delimited
+ nil multi-query-replace-map))
(tags-loop-continue (or file-list-form t)))
\f
(defun tags-complete-tags-table-file (string predicate what) ; Doc string?
(define-button-type 'tags-select-tags-table
'action 'select-tags-table-select
+ 'follow-link t
'help-echo "RET, t or mouse-2: select tags table")
;; XXX If a file is in multiple tables, selection may get the wrong one.
(define-key map "q" 'select-tags-table-quit)
map))
-(define-derived-mode select-tags-table-mode fundamental-mode "Select Tags Table"
- "Major mode for choosing a current tags table among those already loaded.
-
-\\{select-tags-table-mode-map}"
+(define-derived-mode select-tags-table-mode special-mode "Select Tags Table"
+ "Major mode for choosing a current tags table among those already loaded."
(setq buffer-read-only t))
(defun select-tags-table-select (button)
(interactive)
(quit-window t (selected-window)))
\f
-;; Note, there is another definition of this function in bindings.el.
;;;###autoload
(defun complete-tag ()
"Perform tags completion on the text around point.
(error "%s"
(substitute-command-keys
"No tags table loaded; try \\[visit-tags-table]")))
- (let ((completion-ignore-case (if (memq tags-case-fold-search '(t nil))
- tags-case-fold-search
- case-fold-search))
- (pattern (funcall (or find-tag-default-function
- (get major-mode 'find-tag-default-function)
- 'find-tag-default)))
- beg
- completion)
- (or pattern
- (error "Nothing to complete"))
- (search-backward pattern)
- (setq beg (point))
- (forward-char (length pattern))
- (setq completion (tags-complete-tag pattern nil nil))
- (cond ((eq completion t))
- ((null completion)
- (message "Can't find completion for \"%s\"" pattern)
- (ding))
- ((not (string= pattern completion))
- (delete-region beg (point))
- (insert completion))
- (t
- (message "Making completion list...")
- (with-output-to-temp-buffer "*Completions*"
- (display-completion-list
- (all-completions pattern 'tags-complete-tag nil)
- pattern))
- (message "Making completion list...%s" "done")))))
+ (let ((comp-data (tags-completion-at-point-function)))
+ (if (null comp-data)
+ (error "Nothing to complete")
+ (apply 'completion-in-region comp-data))))
(dolist (x '("^No tags table in use; use .* to select one$"
"^There is no default tag$"
\f
(provide 'etags)
-;; arch-tag: b897c2b5-08f3-4837-b2d3-0e7d6db1b63e
;;; etags.el ends here
HCoop / bpt / emacs.git / blobdiff