1 ;;; etags.el --- etags facility for Emacs
3 ;; Copyright (C) 1985, 1986, 1988, 1989, 1992, 1993, 1994
4 ;; Free Software Foundation, Inc.
6 ;; Author: Roland McGrath <roland@gnu.ai.mit.edu>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to
23 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 (defvar tags-file-name nil
29 "*File name of tags table.
30 To switch to a new tags table, setting this variable is sufficient.
31 If you set this variable, do not also set `tags-table-list'.
32 Use the `etags' program to make a tags table file.")
33 ;; Make M-x set-variable tags-file-name like M-x visit-tags-table.
34 ;;;###autoload (put 'tags-file-name 'variable-interactive "fVisit tags table: ")
37 ;; Use `visit-tags-table-buffer' to cycle through tags tables in this list.
38 (defvar tags-table-list nil
39 "*List of file names of tags tables to search.
40 An element that is a directory means the file \"TAGS\" in that directory.
41 To switch to a new list of tags tables, setting this variable is sufficient.
42 If you set this variable, do not also set `tags-file-name'.
43 Use the `etags' program to make a tags table file.")
45 (defvar tags-add-tables nil
46 "*Non-nil means always add a new tags table to the current list.
47 This eliminates the need to ask the user whether to add a new tags table
48 to the current list (as opposed to starting a new list).")
50 (defvar tags-table-list-pointer nil
51 "Pointer into `tags-table-list' where the current state of searching is.
52 Might instead point into a list of included tags tables.
53 Use `visit-tags-table-buffer' to cycle through tags tables in this list.")
55 (defvar tags-table-list-started-at nil
56 "Pointer into `tags-table-list', where the current search started.")
58 (defvar tags-table-parent-pointer-list nil
59 "Saved state of the tags table that included this one.
60 Each element is (POINTER . STARTED-AT), giving the values of
61 `tags-table-list-pointer' and `tags-table-list-started-at' from
62 before we moved into the current table.")
64 (defvar tags-table-set-list nil
65 "List of sets of tags table which have been used together in the past.
66 Each element is a list of strings which are file names.")
69 (defvar find-tag-hook nil
70 "*Hook to be run by \\[find-tag] after finding a tag. See `run-hooks'.
71 The value in the buffer in which \\[find-tag] is done is used,
72 not the value in the buffer \\[find-tag] goes to.")
75 (defvar find-tag-default-function nil
76 "*A function of no arguments used by \\[find-tag] to pick a default tag.
77 If nil, and the symbol that is the value of `major-mode'
78 has a `find-tag-default-function' property (see `put'), that is used.
79 Otherwise, `find-tag-default' is used.")
81 (defvar default-tags-table-function nil
82 "If non-nil, a function to choose a default tags file for a buffer.
83 This function receives no arguments and should return the default
84 tags table file to use for the current buffer.")
86 (defvar tags-location-stack nil
87 "List of markers which are locations visited by \\[find-tag].
88 Pop back to the last location with \\[negative-argument] \\[find-tag].")
91 ;; These variables are local in tags table buffers.
93 (defvar tag-lines-already-matched nil
94 "List of positions of beginnings of lines within the tags table
95 that are already matched.")
97 (defvar tags-table-files nil
98 "List of file names covered by current tags table.
99 nil means it has not yet been computed; use `tags-table-files' to do so.")
101 (defvar tags-completion-table nil
102 "Alist of tag names defined in current tags table.")
104 (defvar tags-included-tables nil
105 "List of tags tables included by the current tags table.")
107 (defvar next-file-list nil
108 "List of files for \\[next-file] to process.")
110 ;; Hooks for file formats.
112 (defvar tags-table-format-hooks '(etags-recognize-tags-table
113 recognize-empty-tags-table)
114 "List of functions to be called in a tags table buffer to identify
115 the type of tags table. The functions are called in order, with no arguments,
116 until one returns non-nil. The function should make buffer-local bindings
117 of the format-parsing tags function variables if successful.")
119 (defvar file-of-tag-function nil
120 "Function to do the work of `file-of-tag' (which see).")
121 (defvar tags-table-files-function nil
122 "Function to do the work of `tags-table-files' (which see).")
123 (defvar tags-completion-table-function nil
124 "Function to build the tags-completion-table.")
125 (defvar snarf-tag-function nil
126 "Function to get info about a matched tag for `goto-tag-location-function'.")
127 (defvar goto-tag-location-function nil
128 "Function of to go to the location in the buffer specified by a tag.
129 One argument, the tag info returned by `snarf-tag-function'.")
130 (defvar find-tag-regexp-search-function nil
131 "Search function passed to `find-tag-in-order' for finding a regexp tag.")
132 (defvar find-tag-regexp-tag-order nil
133 "Tag order passed to `find-tag-in-order' for finding a regexp tag.")
134 (defvar find-tag-regexp-next-line-after-failure-p nil
135 "Flag passed to `find-tag-in-order' for finding a regexp tag.")
136 (defvar find-tag-search-function nil
137 "Search function passed to `find-tag-in-order' for finding a tag.")
138 (defvar find-tag-tag-order nil
139 "Tag order passed to `find-tag-in-order' for finding a tag.")
140 (defvar find-tag-next-line-after-failure-p nil
141 "Flag passed to `find-tag-in-order' for finding a tag.")
142 (defvar list-tags-function nil
143 "Function to do the work of `list-tags' (which see).")
144 (defvar tags-apropos-function nil
145 "Function to do the work of `tags-apropos' (which see).")
146 (defvar tags-included-tables-function nil
147 "Function to do the work of `tags-included-tables' (which see).")
148 (defvar verify-tags-table-function nil
149 "Function to return t iff the current buffer contains a valid
150 \(already initialized\) tags file.")
152 ;; Initialize the tags table in the current buffer.
153 ;; Returns non-nil iff it is a valid tags table. On
154 ;; non-nil return, the tags table state variable are
155 ;; made buffer-local and initialized to nil.
156 (defun initialize-new-tags-table ()
157 (set (make-local-variable 'tag-lines-already-matched) nil)
158 (set (make-local-variable 'tags-table-files) nil)
159 (set (make-local-variable 'tags-completion-table) nil)
160 (set (make-local-variable 'tags-included-tables) nil)
161 ;; Value is t if we have found a valid tags table buffer.
162 (let ((hooks tags-table-format-hooks))
164 (not (funcall (car hooks))))
165 (setq hooks (cdr hooks)))
169 (defun visit-tags-table (file &optional local)
170 "Tell tags commands to use tags table file FILE.
171 FILE should be the name of a file created with the `etags' program.
172 A directory name is ok too; it means file TAGS in that directory.
174 Normally \\[visit-tags-table] sets the global value of `tags-file-name'.
175 With a prefix arg, set the buffer-local value instead.
176 When you find a tag with \\[find-tag], the buffer it finds the tag
177 in is given a local value of this variable which is the name of the tags
178 file the tag was in."
179 (interactive (list (read-file-name "Visit tags table: (default TAGS) "
181 (expand-file-name "TAGS"
185 ;; Calling visit-tags-table-buffer with tags-file-name set to FILE will
186 ;; initialize a buffer for FILE and set tags-file-name to the
187 ;; fully-expanded name.
188 (let ((tags-file-name file))
190 (or (visit-tags-table-buffer 'same)
191 (signal 'file-error (list "Visiting tags table"
192 "file does not exist"
194 ;; Set FILE to the expanded name.
195 (setq file tags-file-name)))
197 ;; Set the local value of tags-file-name.
198 (set (make-local-variable 'tags-file-name) file)
199 ;; Set the global value of tags-file-name.
200 (setq-default tags-file-name file)))
202 ;; Move tags-table-list-pointer along and set tags-file-name.
203 ;; If NO-INCLUDES is non-nil, ignore included tags tables.
204 ;; Returns nil when out of tables.
205 (defun tags-next-table (&optional no-includes)
206 ;; Do we have any included tables?
207 (if (and (not no-includes)
208 (visit-tags-table-buffer 'same)
209 (tags-included-tables))
211 ;; Move into the included tags tables.
212 (setq tags-table-parent-pointer-list
213 ;; Save the current state of what table we are in.
214 (cons (cons tags-table-list-pointer tags-table-list-started-at)
215 tags-table-parent-pointer-list)
216 ;; Start the pointer in the list of included tables.
217 tags-table-list-pointer tags-included-tables
218 tags-table-list-started-at tags-included-tables)
220 ;; No included tables. Go to the next table in the list.
221 (setq tags-table-list-pointer
222 (cdr tags-table-list-pointer))
223 (or tags-table-list-pointer
225 (setq tags-table-list-pointer tags-table-list))
227 (if (eq tags-table-list-pointer tags-table-list-started-at)
228 ;; We have come full circle. No more tables.
229 (if tags-table-parent-pointer-list
230 ;; Pop back to the tags table which includes this one.
232 ;; Restore the state variables.
233 (setq tags-table-list-pointer
234 (car (car tags-table-parent-pointer-list))
235 tags-table-list-started-at
236 (cdr (car tags-table-parent-pointer-list))
237 tags-table-parent-pointer-list
238 (cdr tags-table-parent-pointer-list))
239 ;; Recurse to skip to the next table after the parent.
241 ;; All out of tags tables.
242 (setq tags-table-list-pointer nil))))
244 (and tags-table-list-pointer
245 ;; Set tags-file-name to the fully-expanded name.
247 (tags-expand-table-name (car tags-table-list-pointer)))))
249 ;; Expand tags table name FILE into a complete file name.
250 (defun tags-expand-table-name (file)
251 (setq file (expand-file-name file))
252 (if (file-directory-p file)
253 (expand-file-name "TAGS" file)
256 ;; Return the cdr of LIST (default: tags-table-list) whose car
257 ;; is equal to FILE after tags-expand-table-name on both sides.
258 (defun tags-table-list-member (file &optional list)
260 (setq list tags-table-list))
261 (setq file (tags-expand-table-name file))
263 (not (string= file (tags-expand-table-name (car list)))))
264 (setq list (cdr list)))
267 ;; Local var in visit-tags-table-buffer-cont
268 ;; which is set by tags-table-including.
269 (defvar visit-tags-table-buffer-cont)
271 ;; Subroutine of visit-tags-table-buffer. Frobs its local vars.
272 ;; Search TABLES for one that has tags for THIS-FILE. Recurses on
273 ;; included tables. Returns the tail of TABLES (or of an inner
274 ;; included list) whose car is a table listing THIS-FILE. If
275 ;; CORE-ONLY is non-nil, check only tags tables that are already in
276 ;; buffers--don't visit any new files.
277 (defun tags-table-including (this-file tables core-only &optional recursing)
279 ;; Loop over TABLES, looking for one containing tags for THIS-FILE.
280 (while (and (not found)
282 (let ((tags-file-name (tags-expand-table-name (car tables))))
283 (if (or (get-file-buffer tags-file-name)
285 (file-exists-p tags-file-name)))
287 ;; Select the tags table buffer and get the file list up to date.
288 (visit-tags-table-buffer 'same)
290 (setq tags-table-files
291 (funcall tags-table-files-function)))
293 (cond ((member this-file tags-table-files)
297 ((tags-included-tables)
298 ;; This table has included tables. Check them.
299 (let ((old tags-table-parent-pointer-list))
303 ;; At top level (not in an included tags
304 ;; table), set the list to nil so we can
305 ;; collect just the elts from this run.
306 (setq tags-table-parent-pointer-list nil))
308 ;; Recurse on the list of included tables.
309 (tags-table-including this-file
314 ;; One of them lists THIS-FILE.
315 ;; Set the table list state variables to move
316 ;; us inside the list of included tables.
317 (setq tags-table-parent-pointer-list
319 (cons tags-table-list-pointer
320 tags-table-list-started-at)
321 tags-table-parent-pointer-list)
322 tags-table-list-pointer found
323 tags-table-list-started-at found
324 ;; Set a local variable of
325 ;; our caller, visit-tags-table-buffer.
326 ;; Set it so we won't frob lists later.
327 visit-tags-table-buffer-cont
330 ;; tags-table-parent-pointer-list now describes
331 ;; the path of included tables taken by recursive
332 ;; invocations of this function. The recursive
333 ;; calls have consed onto the front of the list,
334 ;; so it is now outermost first. We want it
335 ;; innermost first, so reverse it. Then append
336 ;; the old list (from before we were called the
337 ;; outermost time), to get the complete current
338 ;; state of included tables.
339 (setq tags-table-parent-pointer-list
341 tags-table-parent-pointer-list)
343 (setq tables (cdr tables)))
346 (defun visit-tags-table-buffer (&optional cont)
347 "Select the buffer containing the current tags table.
348 If optional arg is t, visit the next table in `tags-table-list'.
349 If optional arg is the atom `same', don't look for a new table;
350 just select the buffer visiting `tags-file-name'.
351 If arg is nil or absent, choose a first buffer from information in
352 `tags-file-name', `tags-table-list', `tags-table-list-pointer'.
353 Returns t if it visits a tags table, or nil if there are no more in the list."
355 ;; Set tags-file-name to the tags table file we want to visit.
356 (let ((visit-tags-table-buffer-cont cont))
357 (cond ((eq visit-tags-table-buffer-cont 'same)
358 ;; Use the ambient value of tags-file-name.
360 (error (substitute-command-keys
361 (concat "No tags table in use! "
362 "Use \\[visit-tags-table] to select one.")))))
364 (visit-tags-table-buffer-cont
365 ;; Find the next table.
366 (if (tags-next-table)
367 ;; Skip over nonexistent files.
369 (while (and (setq file
370 (tags-expand-table-name tags-file-name))
371 (not (or (get-file-buffer file)
372 (file-exists-p file))))
373 (tags-next-table)))))
376 ;; Pick a table out of our hat.
379 ;; First, try a local variable.
380 (cdr (assq 'tags-file-name (buffer-local-variables)))
381 ;; Second, try a user-specified function to guess.
382 (and default-tags-table-function
383 (funcall default-tags-table-function))
384 ;; Third, look for a tags table that contains
385 ;; tags for the current buffer's file.
386 ;; If one is found, the lists will be frobnicated,
387 ;; and VISIT-TAGS-TABLE-BUFFER-CONT
388 ;; will be set non-nil so we don't do it below.
390 ;; First check only tables already in buffers.
391 (save-excursion (tags-table-including buffer-file-name
394 ;; Since that didn't find any, now do the
395 ;; expensive version: reading new files.
396 (save-excursion (tags-table-including buffer-file-name
399 ;; Fourth, use the user variable tags-file-name, if it is not
400 ;; already in tags-table-list.
402 (not (tags-table-list-member tags-file-name))
404 ;; Fifth, use the user variable giving the table list.
405 ;; Find the first element of the list that actually exists.
406 (let ((list tags-table-list)
409 (setq file (tags-expand-table-name (car list)))
410 (not (get-file-buffer file))
411 (not (file-exists-p file)))
412 (setq list (cdr list)))
414 ;; Finally, prompt the user for a file name.
416 (read-file-name "Visit tags table: (default TAGS) "
421 ;; Expand the table name into a full file name.
422 (setq tags-file-name (tags-expand-table-name tags-file-name))
424 (if (and (eq visit-tags-table-buffer-cont t)
425 (null tags-table-list-pointer))
426 ;; All out of tables.
429 ;; Verify that tags-file-name is a valid tags table.
430 (if (if (get-file-buffer tags-file-name)
431 ;; The file is already in a buffer. Check for the visited file
432 ;; having changed since we last used it.
434 (set-buffer (get-file-buffer tags-file-name))
435 (setq win (or verify-tags-table-function
436 (initialize-new-tags-table)))
437 (if (or (verify-visited-file-modtime (current-buffer))
439 "Tags file has changed, read new contents? ")))
440 (and win (funcall verify-tags-table-function))
442 (initialize-new-tags-table)))
443 (set-buffer (find-file-noselect tags-file-name))
444 (or (string= tags-file-name buffer-file-name)
445 ;; find-file-noselect has changed the file name.
446 ;; Propagate the change to tags-file-name and tags-table-list.
447 (let ((tail (member tags-file-name tags-table-list)))
449 (setcar tail buffer-file-name))
450 (setq tags-file-name buffer-file-name)))
451 (initialize-new-tags-table))
453 ;; We have a valid tags table.
455 ;; Bury the tags table buffer so it
456 ;; doesn't get in the user's way.
457 (bury-buffer (current-buffer))
459 (if (memq visit-tags-table-buffer-cont '(same nil))
460 ;; Look in the list for the table we chose.
461 (let ((elt (tags-table-list-member tags-file-name)))
463 ;; The table is not in the current set.
464 ;; Try to find it in another previously used set.
465 (let ((sets tags-table-set-list))
468 (tags-table-list-member
469 tags-file-name (car sets)))))
470 (setq sets (cdr sets)))
472 ;; Found in some other set. Switch to that set.
474 (or (memq tags-table-list tags-table-set-list)
475 ;; Save the current list.
476 (setq tags-table-set-list
477 (cons tags-table-list
478 tags-table-set-list)))
479 (setq tags-table-list (car sets)))
481 ;; Not found in any existing set.
482 (if (and tags-table-list
485 (concat "Keep current list of "
486 "tags tables also? "))))
487 ;; Add it to the current list.
488 (setq tags-table-list (cons tags-file-name
490 ;; Make a fresh list, and store the old one.
491 (message "Starting a new list of tags tables")
492 (or (memq tags-table-list tags-table-set-list)
493 (setq tags-table-set-list
494 (cons tags-table-list
495 tags-table-set-list)))
496 (setq tags-table-list (list tags-file-name)))
497 (setq elt tags-table-list))))
499 (or visit-tags-table-buffer-cont
500 ;; Set the tags table list state variables to point
501 ;; at the table we want to use first.
502 (setq tags-table-list-started-at elt
503 tags-table-list-pointer elt))))
505 ;; Return of t says the tags table is valid.
508 ;; The buffer was not valid. Don't use it again.
509 (let ((file tags-file-name))
510 (kill-local-variable 'tags-file-name)
511 (if (eq file tags-file-name)
512 (setq tags-file-name nil)))
513 (error "File %s is not a valid tags table" buffer-file-name)))))
515 (defun file-of-tag ()
516 "Return the file name of the file whose tags point is within.
517 Assumes the tags table is the current buffer.
518 File name returned is relative to tags table file's directory."
519 (funcall file-of-tag-function))
522 (defun tags-table-files ()
523 "Return a list of files in the current tags table.
524 Assumes the tags table is the current buffer.
525 File names returned are absolute."
527 (setq tags-table-files
528 (funcall tags-table-files-function))))
530 (defun tags-included-tables ()
531 "Return a list of tags tables included by the current table.
532 Assumes the tags table is the current buffer."
533 (or tags-included-tables
534 (setq tags-included-tables (funcall tags-included-tables-function))))
536 ;; Build tags-completion-table on demand. The single current tags table
537 ;; and its included tags tables (and their included tables, etc.) have
538 ;; their tags included in the completion table.
539 (defun tags-completion-table ()
540 (or tags-completion-table
543 (message "Making tags completion table for %s..." buffer-file-name)
544 (let ((included (tags-included-tables))
545 (table (funcall tags-completion-table-function)))
547 ;; Iterate over the list of included tables, and combine each
548 ;; included table's completion obarray to the parent obarray.
551 (let ((tags-file-name (car included)))
552 (visit-tags-table-buffer 'same))
553 ;; Recurse in that buffer to compute its completion table.
554 (if (tags-completion-table)
555 ;; Combine the tables.
558 (intern (symbol-name sym) table)))
559 tags-completion-table))
560 (setq included (cdr included))))
561 (setq tags-completion-table table))
562 (message "Making tags completion table for %s...done"
564 (quit (message "Tags completion table construction aborted.")
565 (setq tags-completion-table nil)))))
567 ;; Completion function for tags. Does normal try-completion,
568 ;; but builds tags-completion-table on demand.
569 (defun tags-complete-tag (string predicate what)
571 ;; If we need to ask for the tag table, allow that.
572 (let ((enable-recursive-minibuffers t))
573 (visit-tags-table-buffer))
575 (all-completions string (tags-completion-table) predicate)
576 (try-completion string (tags-completion-table) predicate))))
578 ;; Return a default tag to search for, based on the text at point.
579 (defun find-tag-default ()
581 (while (looking-at "\\sw\\|\\s_")
583 (if (or (re-search-backward "\\sw\\|\\s_"
584 (save-excursion (beginning-of-line) (point))
586 (re-search-forward "\\(\\sw\\|\\s_\\)+"
587 (save-excursion (end-of-line) (point))
589 (progn (goto-char (match-end 0))
590 (buffer-substring (point)
591 (progn (forward-sexp -1)
592 (while (looking-at "\\s'")
597 ;; Read a tag name from the minibuffer with defaulting and completion.
598 (defun find-tag-tag (string)
599 (let* ((default (funcall (or find-tag-default-function
600 (get major-mode 'find-tag-default-function)
602 (spec (completing-read (if default
603 (format "%s(default %s) " string default)
605 'tags-complete-tag)))
607 (or default (error "There is no default tag"))
611 "Last tag found by \\[find-tag].")
613 ;; Get interactive args for find-tag{-noselect,-other-window,-regexp}.
614 (defun find-tag-interactive (prompt &optional no-default)
615 (if current-prefix-arg
616 (list nil (if (< (prefix-numeric-value current-prefix-arg) 0)
621 (find-tag-tag prompt)))))
624 (defun find-tag-noselect (tagname &optional next-p regexp-p)
625 "Find tag (in current tags table) whose name contains TAGNAME.
626 Returns the buffer containing the tag's definition and moves its point there,
627 but does not select the buffer.
628 The default for TAGNAME is the expression in the buffer near point.
630 If second arg NEXT-P is t (interactively, with prefix arg), search for
631 another tag that matches the last tagname or regexp used. When there are
632 multiple matches for a tag, more exact matches are found first. If NEXT-P
633 is the atom `-' (interactively, with prefix arg that is a negative number
634 or just \\[negative-argument]), pop back to the previous tag gone to.
636 If third arg REGEXP-P is non-nil, treat TAGNAME as a regexp.
638 See documentation of variable `tags-file-name'."
639 (interactive (find-tag-interactive "Find tag: "))
641 ;; Save the current buffer's value of `find-tag-hook' before selecting the
642 ;; tags table buffer.
643 (let ((local-find-tag-hook find-tag-hook))
645 ;; Pop back to a previous location.
646 (if (null tags-location-stack)
647 (error "No previous tag locations")
648 (let ((marker (car tags-location-stack)))
650 (setq tags-location-stack (cdr tags-location-stack))
652 ;; Move to the saved location.
653 (set-buffer (marker-buffer marker))
654 (goto-char (marker-position marker))
655 ;; Kill that marker so it doesn't slow down editing.
656 (set-marker marker nil nil)
657 ;; Run the user's hook. Do we really want to do this for pop?
658 (run-hooks 'local-find-tag-hook))))
660 ;; Find the same table we last used.
661 (visit-tags-table-buffer 'same)
662 ;; Pick a table to use.
663 (visit-tags-table-buffer)
664 ;; Record TAGNAME for a future call with NEXT-P non-nil.
665 (setq last-tag tagname))
667 ;; Record the location so we can pop back to it later.
670 (setq tags-location-stack
671 (cons (let ((marker (make-marker)))
674 ;; find-tag-in-order does the real work.
676 (if next-p last-tag tagname)
678 find-tag-regexp-search-function
679 find-tag-search-function)
681 find-tag-regexp-tag-order
684 find-tag-regexp-next-line-after-failure-p
685 find-tag-next-line-after-failure-p)
686 (if regexp-p "matching" "containing")
688 (set-marker marker (point))))
689 tags-location-stack))))
690 (run-hooks 'local-find-tag-hook)))))
693 (defun find-tag (tagname &optional next-p regexp-p)
694 "Find tag (in current tags table) whose name contains TAGNAME.
695 Select the buffer containing the tag's definition, and move point there.
696 The default for TAGNAME is the expression in the buffer around or before point.
698 If second arg NEXT-P is t (interactively, with prefix arg), search for
699 another tag that matches the last tagname or regexp used. When there are
700 multiple matches for a tag, more exact matches are found first. If NEXT-P
701 is the atom `-' (interactively, with prefix arg that is a negative number
702 or just \\[negative-argument]), pop back to the previous tag gone to.
704 See documentation of variable `tags-file-name'."
705 (interactive (find-tag-interactive "Find tag: "))
706 (switch-to-buffer (find-tag-noselect tagname next-p regexp-p)))
707 ;;;###autoload (define-key esc-map "." 'find-tag)
710 (defun find-tag-other-window (tagname &optional next-p regexp-p)
711 "Find tag (in current tags table) whose name contains TAGNAME.
712 Select the buffer containing the tag's definition in another window, and
713 move point there. The default for TAGNAME is the expression in the buffer
714 around or before point.
716 If second arg NEXT-P is t (interactively, with prefix arg), search for
717 another tag that matches the last tagname or regexp used. When there are
718 multiple matches for a tag, more exact matches are found first. If NEXT-P
719 is negative (interactively, with prefix arg that is a negative number or
720 just \\[negative-argument]), pop back to the previous tag gone to.
722 See documentation of variable `tags-file-name'."
723 (interactive (find-tag-interactive "Find tag other window: "))
725 ;; This hair is to deal with the case where the tag is found in the
726 ;; selected window's buffer; without the hair, point is moved in both
727 ;; windows. To prevent this, we save the selected window's point before
728 ;; doing find-tag-noselect, and restore it after.
729 (let* ((window-point (window-point (selected-window)))
730 (tagbuf (find-tag-noselect tagname next-p regexp-p))
731 (tagpoint (progn (set-buffer tagbuf) (point))))
732 (set-window-point (prog1
734 (switch-to-buffer-other-window tagbuf)
735 ;; We have to set this new window's point; it
736 ;; might already have been displaying a
737 ;; different portion of tagbuf, in which case
738 ;; switch-to-buffer-other-window doesn't set
739 ;; the window's point from the buffer.
740 (set-window-point (selected-window) tagpoint))
742 ;;;###autoload (define-key ctl-x-4-map "." 'find-tag-other-window)
745 (defun find-tag-other-frame (tagname &optional next-p)
746 "Find tag (in current tags table) whose name contains TAGNAME.
747 Select the buffer containing the tag's definition in another frame, and
748 move point there. The default for TAGNAME is the expression in the buffer
749 around or before point.
751 If second arg NEXT-P is t (interactively, with prefix arg), search for
752 another tag that matches the last tagname or regexp used. When there are
753 multiple matches for a tag, more exact matches are found first. If NEXT-P
754 is negative (interactively, with prefix arg that is a negative number or
755 just \\[negative-argument]), pop back to the previous tag gone to.
757 See documentation of variable `tags-file-name'."
758 (interactive (find-tag-interactive "Find tag other frame: "))
759 (let ((pop-up-frames t))
760 (find-tag-other-window tagname next-p)))
761 ;;;###autoload (define-key ctl-x-5-map "." 'find-tag-other-frame)
764 (defun find-tag-regexp (regexp &optional next-p other-window)
765 "Find tag (in current tags table) whose name matches REGEXP.
766 Select the buffer containing the tag's definition and move point there.
768 If second arg NEXT-P is t (interactively, with prefix arg), search for
769 another tag that matches the last tagname or regexp used. When there are
770 multiple matches for a tag, more exact matches are found first. If NEXT-P
771 is negative (interactively, with prefix arg that is a negative number or
772 just \\[negative-argument]), pop back to the previous tag gone to.
774 If third arg OTHER-WINDOW is non-nil, select the buffer in another window.
776 See documentation of variable `tags-file-name'."
777 (interactive (find-tag-interactive "Find tag regexp: " t))
778 ;; We go through find-tag-other-window to do all the display hair there.
779 (funcall (if other-window 'find-tag-other-window 'find-tag)
782 ;; Internal tag finding function.
784 ;; PATTERN is a string to pass to second arg SEARCH-FORWARD-FUNC, and to
785 ;; any member of the function list ORDER (third arg). If ORDER is nil,
786 ;; use saved state to continue a previous search.
788 ;; Fourth arg MATCHING is a string, an English '-ing' word, to be used in
791 ;; Fifth arg NEXT-LINE-AFTER-FAILURE-P is non-nil if after a failed match,
792 ;; point should be moved to the next line.
794 ;; Algorithm is as follows. For each qualifier-func in ORDER, go to
795 ;; beginning of tags file, and perform inner loop: for each naive match for
796 ;; PATTERN found using SEARCH-FORWARD-FUNC, qualify the naive match using
797 ;; qualifier-func. If it qualifies, go to the specified line in the
798 ;; specified source file and return. Qualified matches are remembered to
799 ;; avoid repetition. State is saved so that the loop can be continued.
801 (defun find-tag-in-order (pattern
804 next-line-after-failure-p
807 (let (file ;name of file containing tag
808 tag-info ;where to find the tag in FILE
809 tags-table-file ;name of tags file
815 (or first-search ;find-tag-noselect has already done it.
816 (visit-tags-table-buffer 'same))
818 ;; Get a qualified match.
819 (catch 'qualified-match-found
821 ;; Iterate over the list of tags tables.
822 (while (or first-table
823 (visit-tags-table-buffer t))
826 (setq tag-lines-already-matched nil))
828 (and first-search first-table
829 ;; Start at beginning of tags file.
830 (goto-char (point-min)))
831 (setq first-table nil)
833 (setq tags-table-file buffer-file-name)
834 ;; Iterate over the list of ordering predicates.
836 (while (funcall search-forward-func pattern nil t)
837 ;; Naive match found. Qualify the match.
838 (and (funcall (car order) pattern)
839 ;; Make sure it is not a previous qualified match.
840 ;; Use of `memq' depends on numbers being eq.
841 (not (memq (save-excursion (beginning-of-line) (point))
842 tag-lines-already-matched))
843 (throw 'qualified-match-found nil))
844 (if next-line-after-failure-p
846 ;; Try the next flavor of match.
847 (setq order (cdr order))
848 (goto-char (point-min)))
849 (setq order tag-order))
850 ;; We throw out on match, so only get here if there were no matches.
851 (error "No %stags %s %s" (if first-search "" "more ")
854 ;; Found a tag; extract location info.
856 (setq tag-lines-already-matched (cons (point)
857 tag-lines-already-matched))
858 ;; Expand the filename, using the tags table buffer's default-directory.
859 (setq file (expand-file-name (file-of-tag))
860 tag-info (funcall snarf-tag-function))
862 ;; Get the local value in the tags table buffer before switching buffers.
863 (setq goto-func goto-tag-location-function)
865 ;; Find the right line in the specified file.
866 (set-buffer (find-file-noselect file))
869 (funcall goto-func tag-info)
871 ;; Give this buffer a local value of tags-file-name.
872 ;; The next time visit-tags-table-buffer is called,
873 ;; it will use the same tags table that found a match in this buffer.
874 (make-local-variable 'tags-file-name)
875 (setq tags-file-name tags-table-file)
877 ;; Return the buffer where the tag was found.
880 ;; `etags' TAGS file format support.
882 ;; If the current buffer is a valid etags TAGS file, give it local values of
883 ;; the tags table format variables, and return non-nil.
884 (defun etags-recognize-tags-table ()
885 (and (etags-verify-tags-table)
886 ;; It is annoying to flash messages on the screen briefly,
887 ;; and this message is not useful. -- rms
888 ;; (message "%s is an `etags' TAGS file" buffer-file-name)
889 (mapcar (function (lambda (elt)
890 (set (make-local-variable (car elt)) (cdr elt))))
891 '((file-of-tag-function . etags-file-of-tag)
892 (tags-table-files-function . etags-tags-table-files)
893 (tags-completion-table-function . etags-tags-completion-table)
894 (snarf-tag-function . etags-snarf-tag)
895 (goto-tag-location-function . etags-goto-tag-location)
896 (find-tag-regexp-search-function . re-search-forward)
897 (find-tag-regexp-tag-order . (tag-re-match-p))
898 (find-tag-regexp-next-line-after-failure-p . t)
899 (find-tag-search-function . search-forward)
900 (find-tag-tag-order . (tag-exact-match-p tag-word-match-p
902 (find-tag-next-line-after-failure-p . nil)
903 (list-tags-function . etags-list-tags)
904 (tags-apropos-function . etags-tags-apropos)
905 (tags-included-tables-function . etags-tags-included-tables)
906 (verify-tags-table-function . etags-verify-tags-table)
909 ;; Return non-nil iff the current buffer is a valid etags TAGS file.
910 (defun etags-verify-tags-table ()
911 ;; Use eq instead of = in case char-after returns nil.
912 (eq (char-after 1) ?\f))
914 (defun etags-file-of-tag ()
916 (search-backward "\f\n")
918 (buffer-substring (point)
919 (progn (skip-chars-forward "^,") (point)))))
921 (defun etags-tags-completion-table ()
922 (let ((table (make-vector 511 0)))
924 (goto-char (point-min))
925 ;; This monster regexp matches an etags tag line.
926 ;; \1 is the string to match;
927 ;; \2 is not interesting;
928 ;; \3 is the guessed tag name; XXX guess should be better eg DEFUN
929 ;; \4 is not interesting;
930 ;; \5 is the explicitly-specified tag name.
931 ;; \6 is the line to start searching at;
932 ;; \7 is the char to start searching at.
933 (while (re-search-forward
934 "^\\(\\(.+[^-a-zA-Z0-9_$]+\\)?\\([-a-zA-Z0-9_$]+\\)\
935 \[^-a-zA-Z0-9_$]*\\)\177\\(\\([^\n\001]+\\)\001\\)?\\([0-9]+\\),\\([0-9]+\\)\n"
937 (intern (if (match-beginning 5)
938 ;; There is an explicit tag name.
939 (buffer-substring (match-beginning 5) (match-end 5))
940 ;; No explicit tag name. Best guess.
941 (buffer-substring (match-beginning 3) (match-end 3)))
945 (defun etags-snarf-tag ()
946 (let (tag-text startpos)
947 (search-forward "\177")
948 (setq tag-text (buffer-substring (1- (point))
949 (save-excursion (beginning-of-line)
951 ;; Skip explicit tag name if present.
952 (search-forward "\001" (save-excursion (forward-line 1) (point)) t)
954 (setq startpos (string-to-int (buffer-substring
956 (progn (skip-chars-forward "0-9")
958 ;; Leave point on the next line of the tags file.
960 (cons tag-text startpos)))
962 (defun etags-goto-tag-location (tag-info)
963 (let ((startpos (cdr tag-info))
964 ;; This constant is 1/2 the initial search window.
965 ;; There is no sense in making it too small,
966 ;; since just going around the loop once probably
967 ;; costs about as much as searching 2000 chars.
970 (pat (concat (if (eq selective-display t)
972 (regexp-quote (car tag-info)))))
974 (setq startpos (point-min)))
975 (while (and (not found)
977 (goto-char (- startpos offset))
980 (re-search-forward pat (+ startpos offset) t)
981 offset (* 3 offset))) ; expand search window
983 (re-search-forward pat nil t)
984 (error "Rerun etags: `%s' not found in %s"
985 pat buffer-file-name)))
986 ;; Position point at the right place
987 ;; if the search string matched an extra Ctrl-m at the beginning.
988 (and (eq selective-display t)
993 (defun etags-list-tags (file)
995 (if (not (search-forward (concat "\f\n" file ",") nil t))
998 (while (not (or (eobp) (looking-at "\f")))
999 (princ (buffer-substring (point)
1000 (progn (skip-chars-forward "^\177")
1006 (defun etags-tags-apropos (string)
1008 (while (re-search-forward string nil t)
1010 (princ (buffer-substring (point)
1011 (progn (skip-chars-forward "^\177")
1016 (defun etags-tags-table-files ()
1019 (goto-char (point-min))
1020 (while (search-forward "\f\n" nil t)
1022 (skip-chars-forward "^,\n")
1023 (or (looking-at ",include$")
1024 ;; Expand in the default-directory of the tags table buffer.
1025 (setq files (cons (expand-file-name (buffer-substring beg (point)))
1029 (defun etags-tags-included-tables ()
1032 (goto-char (point-min))
1033 (while (search-forward "\f\n" nil t)
1035 (skip-chars-forward "^,\n")
1036 (if (looking-at ",include$")
1037 ;; Expand in the default-directory of the tags table buffer.
1038 (setq files (cons (expand-file-name (buffer-substring beg (point)))
1042 ;; Empty tags file support.
1044 ;; Recognize an empty file and give it local values of the tags table format
1045 ;; variables which do nothing.
1046 (defun recognize-empty-tags-table ()
1047 (and (zerop (buffer-size))
1048 (mapcar (function (lambda (sym)
1049 (set (make-local-variable sym) 'ignore)))
1050 '(tags-table-files-function
1051 tags-completion-table-function
1052 find-tag-regexp-search-function
1053 find-tag-search-function
1054 tags-apropos-function
1055 tags-included-tables-function))
1056 (set (make-local-variable 'verify-tags-table-function)
1057 (function (lambda ()
1058 (zerop (buffer-size)))))))
1060 ;;; Match qualifier functions for tagnames.
1061 ;;; XXX these functions assume etags file format.
1063 ;; This might be a neat idea, but it's too hairy at the moment.
1064 ;;(defmacro tags-with-syntax (&rest body)
1065 ;; (` (let ((current (current-buffer))
1066 ;; (otable (syntax-table))
1067 ;; (buffer (find-file-noselect (file-of-tag)))
1071 ;; (set-buffer buffer)
1072 ;; (setq table (syntax-table))
1073 ;; (set-buffer current)
1074 ;; (set-syntax-table table)
1076 ;; (set-syntax-table otable)))))
1077 ;;(put 'tags-with-syntax 'edebug-form-spec '(&rest form))
1079 ;; t if point is at a tag line that matches TAG "exactly".
1080 ;; point should be just after a string that matches TAG.
1081 (defun tag-exact-match-p (tag)
1082 ;; The match is really exact if there is an explicit tag name.
1083 (or (looking-at (concat "[^\177]*\177" (regexp-quote tag) "\001"))
1084 ;; We also call it "exact" if it is surrounded by symbol boundaries.
1085 ;; This is needed because etags does not always generate explicit names.
1086 (and (looking-at "\\Sw.*\177") (looking-at "\\S_.*\177")
1088 (backward-char (1+ (length tag)))
1089 (and (looking-at "\\Sw") (looking-at "\\S_"))))))
1091 ;; t if point is at a tag line that matches TAG as a word.
1092 ;; point should be just after a string that matches TAG.
1093 (defun tag-word-match-p (tag)
1094 (and (looking-at "\\b.*\177")
1095 (save-excursion (backward-char (1+ (length tag)))
1096 (looking-at "\\b"))))
1098 ;; t if point is in a tag line with a tag containing TAG as a substring.
1099 (defun tag-any-match-p (tag)
1100 (looking-at ".*\177"))
1102 ;; t if point is at a tag line that matches RE as a regexp.
1103 (defun tag-re-match-p (re)
1106 (let ((bol (point)))
1107 (and (search-forward "\177" (save-excursion (end-of-line) (point)) t)
1108 (re-search-backward re bol t)))))
1111 (defun next-file (&optional initialize novisit)
1112 "Select next file among files in current tags table.
1114 A first argument of t (prefix arg, if interactive) initializes to the
1115 beginning of the list of files in the tags table. If the argument is
1116 neither nil nor t, it is evalled to initialize the list of files.
1118 Non-nil second argument NOVISIT means use a temporary buffer
1119 to save time and avoid uninteresting warnings.
1121 Value is nil if the file was already visited;
1122 if the file was newly read in, the value is the filename."
1124 (cond ((not initialize)
1125 ;; Not the first run.
1128 ;; Initialize the list from the tags table.
1130 ;; Visit the tags table buffer to get its list of files.
1131 (visit-tags-table-buffer)
1132 (setq next-file-list (tags-table-files))))
1134 ;; Initialize the list by evalling the argument.
1135 (setq next-file-list (eval initialize))))
1138 ;; Get the files from the next tags table.
1139 ;; When doing (visit-tags-table-buffer t),
1140 ;; the tags table buffer must be current.
1141 (if (and (visit-tags-table-buffer 'same)
1142 (visit-tags-table-buffer t))
1143 (setq next-file-list (tags-table-files))
1145 (get-buffer " *next-file*")
1146 (kill-buffer " *next-file*"))
1147 (error "All files processed."))))
1148 (let ((new (not (get-file-buffer (car next-file-list)))))
1149 (if (not (and new novisit))
1150 (set-buffer (find-file-noselect (car next-file-list) novisit))
1151 ;; Like find-file, but avoids random warning messages.
1152 (set-buffer (get-buffer-create " *next-file*"))
1153 (kill-all-local-variables)
1155 (setq new (car next-file-list))
1156 (insert-file-contents new nil))
1157 (setq next-file-list (cdr next-file-list))
1160 (defvar tags-loop-operate nil
1161 "Form for `tags-loop-continue' to eval to change one file.")
1163 (defvar tags-loop-scan
1164 '(error (substitute-command-keys
1165 "No \\[tags-search] or \\[tags-query-replace] in progress."))
1166 "Form for `tags-loop-continue' to eval to scan one file.
1167 If it returns non-nil, this file needs processing by evalling
1168 \`tags-loop-operate'. Otherwise, move on to the next file.")
1171 (defun tags-loop-continue (&optional first-time)
1172 "Continue last \\[tags-search] or \\[tags-query-replace] command.
1173 Used noninteractively with non-nil argument to begin such a command (the
1174 argument is passed to `next-file', which see).
1175 Two variables control the processing we do on each file:
1176 the value of `tags-loop-scan' is a form to be executed on each file
1177 to see if it is interesting (it returns non-nil if so)
1178 and `tags-loop-operate' is a form to execute to operate on an interesting file
1179 If the latter returns non-nil, we exit; otherwise we scan the next file."
1185 ;; Scan files quickly for the first or next interesting one.
1186 (while (or first-time
1189 (not (eval tags-loop-scan))))
1190 (setq new (next-file first-time t))
1191 ;; If NEW is non-nil, we got a temp buffer,
1192 ;; and NEW is the file name.
1194 (and (not first-time)
1195 (> baud-rate search-slow-speed)
1197 (message "Scanning file %s..." (or new buffer-file-name)))
1198 (setq first-time nil)
1199 (goto-char (point-min)))
1201 ;; If we visited it in a temp buffer, visit it now for real.
1203 (let ((pos (point)))
1205 (set-buffer (find-file-noselect new))
1209 (switch-to-buffer (current-buffer))
1211 ;; Now operate on the file.
1212 ;; If value is non-nil, continue to scan the next file.
1213 (eval tags-loop-operate)))
1215 (null tags-loop-operate)
1216 (message "Scanning file %s...found" buffer-file-name))))
1217 ;;;###autoload (define-key esc-map "," 'tags-loop-continue)
1220 (defun tags-search (regexp &optional file-list-form)
1221 "Search through all files listed in tags table for match for REGEXP.
1222 Stops when a match is found.
1223 To continue searching for next match, use command \\[tags-loop-continue].
1225 See documentation of variable `tags-file-name'."
1226 (interactive "sTags search (regexp): ")
1227 (if (and (equal regexp "")
1228 (eq (car tags-loop-scan) 're-search-forward)
1229 (null tags-loop-operate))
1230 ;; Continue last tags-search as if by M-,.
1231 (tags-loop-continue nil)
1232 (setq tags-loop-scan
1233 (list 're-search-forward regexp nil t)
1234 tags-loop-operate nil)
1235 (tags-loop-continue (or file-list-form t))))
1238 (defun tags-query-replace (from to &optional delimited file-list-form)
1239 "Query-replace-regexp FROM with TO through all files listed in tags table.
1240 Third arg DELIMITED (prefix arg) means replace only word-delimited matches.
1241 If you exit (\\[keyboard-quit] or ESC), you can resume the query-replace
1242 with the command \\[tags-loop-continue].
1244 See documentation of variable `tags-file-name'."
1246 "sTags query replace (regexp): \nsTags query replace %s by: \nP")
1247 (setq tags-loop-scan (list 'prog1
1248 (list 'if (list 're-search-forward from nil t)
1249 ;; When we find a match, move back
1250 ;; to the beginning of it so perform-replace
1252 '(goto-char (match-beginning 0))))
1253 tags-loop-operate (list 'perform-replace from to t t delimited))
1254 (tags-loop-continue (or file-list-form t)))
1257 (defun list-tags (file)
1258 "Display list of tags in file FILE.
1259 FILE should not contain a directory specification."
1260 (interactive (list (completing-read "List tags in file: "
1262 (visit-tags-table-buffer)
1264 (mapcar 'file-name-nondirectory
1265 (tags-table-files))))
1267 (with-output-to-temp-buffer "*Tags List*"
1268 (princ "Tags in file ")
1272 (let ((first-time t)
1274 (while (visit-tags-table-buffer (not first-time))
1275 (setq first-time nil)
1276 (if (funcall list-tags-function file)
1279 (error "File %s not in current tags tables" file))))))
1282 (defun tags-apropos (regexp)
1283 "Display list of all tags in tags table REGEXP matches."
1284 (interactive "sTags apropos (regexp): ")
1285 (with-output-to-temp-buffer "*Tags List*"
1286 (princ "Tags matching regexp ")
1290 (let ((first-time t))
1291 (while (visit-tags-table-buffer (not first-time))
1292 (setq first-time nil)
1293 (funcall tags-apropos-function regexp))))))
1295 ;;; XXX Kludge interface.
1297 ;; XXX If a file is in multiple tables, selection may get the wrong one.
1299 (defun select-tags-table ()
1300 "Select a tags table file from a menu of those you have already used.
1301 The list of tags tables to select from is stored in `tags-table-file-list';
1302 see the doc of that variable if you want to add names to the list."
1304 (pop-to-buffer "*Tags Table List*")
1305 (setq buffer-read-only nil)
1307 (setq selective-display t
1308 selective-display-ellipses nil)
1309 (let ((set-list tags-table-set-list)
1310 (desired-point nil))
1313 (setq desired-point (point-marker))
1314 (princ tags-table-list (current-buffer))
1316 (prin1 (car tags-table-list) (current-buffer)) ;invisible
1319 (if (eq (car set-list) tags-table-list)
1320 ;; Already printed it.
1322 (princ (car set-list) (current-buffer))
1324 (prin1 (car (car set-list)) (current-buffer)) ;invisible
1326 (setq set-list (cdr set-list)))
1330 (setq desired-point (point-marker)))
1331 (insert tags-file-name "\C-m")
1332 (prin1 tags-file-name (current-buffer)) ;invisible
1334 (setq set-list (delete tags-file-name
1335 (apply 'nconc (cons tags-table-list
1336 (mapcar 'copy-sequence
1337 tags-table-set-list)))))
1339 (insert (car set-list) "\C-m")
1340 (prin1 (car set-list) (current-buffer)) ;invisible
1342 (setq set-list (delete (car set-list) set-list)))
1344 (insert-before-markers
1345 "Type `t' to select a tags table or set of tags tables:\n\n")
1347 (goto-char desired-point))
1348 (set-window-start (selected-window) 1 t))
1349 (set-buffer-modified-p nil)
1350 (setq buffer-read-only t
1351 mode-name "Select Tags Table")
1352 (let ((map (make-sparse-keymap)))
1353 (define-key map "t" 'select-tags-table-select)
1354 (define-key map " " 'next-line)
1355 (define-key map "\^?" 'previous-line)
1356 (define-key map "n" 'next-line)
1357 (define-key map "p" 'previous-line)
1358 (define-key map "q" 'select-tags-table-quit)
1359 (use-local-map map)))
1361 (defun select-tags-table-select ()
1362 "Select the tags table named on this line."
1364 (search-forward "\C-m")
1365 (let ((name (read (current-buffer))))
1366 (visit-tags-table name)
1367 (select-tags-table-quit)
1368 (message "Tags table now %s" name)))
1370 (defun select-tags-table-quit ()
1371 "Kill the buffer and delete the selected window."
1373 (kill-buffer (current-buffer))
1378 (defun complete-tag ()
1379 "Perform tags completion on the text around point.
1380 Completes to the set of names listed in the current tags table.
1381 The string to complete is chosen in the same way as the default
1382 for \\[find-tag] (which see)."
1386 (error (substitute-command-keys
1387 "No tags table loaded. Try \\[visit-tags-table].")))
1388 (let ((pattern (funcall (or find-tag-default-function
1389 (get major-mode 'find-tag-default-function)
1390 'find-tag-default)))
1394 (error "Nothing to complete"))
1395 (search-backward pattern)
1397 (forward-char (length pattern))
1398 (setq completion (try-completion pattern 'tags-complete-tag nil))
1399 (cond ((eq completion t))
1401 (message "Can't find completion for \"%s\"" pattern)
1403 ((not (string= pattern completion))
1404 (delete-region beg (point))
1405 (insert completion))
1407 (message "Making completion list...")
1408 (with-output-to-temp-buffer " *Completions*"
1409 (display-completion-list
1410 (all-completions pattern 'tags-complete-tag nil)))
1411 (message "Making completion list...%s" "done")))))
1413 ;;;###autoload (define-key esc-map "\t" 'complete-tag)
1417 ;;; etags.el ends here