1;;; reftex-index.el --- index support with RefTeX
2
3;; Copyright (C) 1997-2021 Free Software Foundation, Inc.
4
5;; Author: Carsten Dominik <dominik@science.uva.nl>
6;; Maintainer: auctex-devel@gnu.org
7
8;; This file is part of GNU Emacs.
9
10;; GNU Emacs is free software: you can redistribute it and/or modify
11;; it under the terms of the GNU General Public License as published by
12;; the Free Software Foundation, either version 3 of the License, or
13;; (at your option) any later version.
14
15;; GNU Emacs is distributed in the hope that it will be useful,
16;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18;; GNU General Public License for more details.
19
20;; You should have received a copy of the GNU General Public License
21;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
22
23;;; Commentary:
24
25;;; Code:
26
27(eval-when-compile (require 'cl-lib))
28(declare-function texmathp "ext:texmathp" ())
29
30(require 'reftex)
31
32;; START remove for XEmacs release
33(defvar mark-active)
34(defvar transient-mark-mode)
35(defvar TeX-master)
36;; END remove for XEmacs release
37
38;;;###autoload
39(defun reftex-index-selection-or-word (&optional arg phrase)
40  "Put selection or the word near point into the default index macro.
41This uses the information in `reftex-index-default-macro' to make an index
42entry.  The phrase indexed is the current selection or the word near point.
43When called with one `C-u' prefix, let the user have a chance to edit the
44index entry.  When called with 2 `C-u' as prefix, also ask for the index
45macro and other stuff.
46When called inside TeX math mode as determined by the `texmathp.el' library
47which is part of AUCTeX, the string is first processed with the
48`reftex-index-math-format', which see."
49  (interactive "P")
50  (let* ((use-default (not (equal arg '(16))))  ; check for double prefix
51         ;; check if we have an active selection
52         (active (reftex-region-active-p))
53         (beg (if active
54                  (region-beginning)
55                (save-excursion
56                  (skip-syntax-backward "w\\") (point))))
57         (end (if active
58                  (region-end)
59                (save-excursion
60                  (skip-syntax-forward "w\\") (point))))
61         (sel (buffer-substring beg end))
62         (mathp (condition-case nil (texmathp) (error nil)))
63         (current-prefix-arg nil) ; we want to call reftex-index without prefix.
64         key def-char def-tag full-entry)
65
66    (if phrase
67        (progn
68          (reftex-index-visit-phrases-buffer)
69          (reftex-index-new-phrase sel))
70
71      (if (equal sel "")
72          ;; Nothing selected, no word, so use full reftex-index command
73          (reftex-index)
74        ;; OK, we have something to index here.
75        ;; Add the dollars when necessary
76        (setq key (if mathp
77                      (format reftex-index-math-format sel)
78                    sel))
79        ;; Get info from `reftex-index-default-macro'
80        (setq def-char  (if use-default (car reftex-index-default-macro)))
81        (setq def-tag   (if use-default (nth 1 reftex-index-default-macro)))
82        ;; Does the user want to edit the entry?
83        (setq full-entry (if arg
84                             (reftex-index-complete-key
85                              def-tag nil (cons key 0))
86                           key))
87        ;; Delete what is in the buffer and make the index entry
88        (delete-region beg end)
89        (reftex-index def-char full-entry def-tag sel)))))
90
91;;;###autoload
92(defun reftex-index (&optional char key tag sel no-insert)
93  "Query for an index macro and insert it along with its arguments.
94The index macros available are those defined in `reftex-index-macro' or
95by a call to `reftex-add-index-macros', typically from an AUCTeX style file.
96RefteX provides completion for the index tag and the index key, and
97will prompt for other arguments."
98
99  (interactive)
100
101  ;; Ensure access to scanning info
102  (reftex-ensure-index-support t)
103  (reftex-access-scan-info current-prefix-arg)
104
105  ;; Find out which macro we are going to use
106  (let* ((char (or char
107                   (reftex-select-with-char reftex-query-index-macro-prompt
108                                            reftex-query-index-macro-help)))
109         (macro (nth 1 (assoc char reftex-key-to-index-macro-alist)))
110         (entry (or (assoc macro reftex-index-macro-alist)
111                    (error "No index macro associated with %c" char)))
112         (ntag (nth 1 entry))
113         (tag (or tag (nth 1 entry)))
114         (nargs (nth 4 entry))
115         (nindex (nth 5 entry))
116         (opt-args (nth 6 entry))
117         (repeat (nth 7 entry))
118         opt tag1 value)
119
120    ;; Get the supported arguments
121    (if (stringp tag)
122        (setq tag1 tag)
123      (setq tag1 (or (reftex-index-complete-tag tag opt-args) "")))
124    (setq key (or key
125                  (reftex-index-complete-key
126                   (if (string= tag1 "") "idx" tag1)
127                   (member nindex opt-args))))
128
129    ;; Insert the macro and ask for any additional args
130    (insert macro)
131    (cl-loop for i from 1 to nargs do
132      (setq opt (member i opt-args)
133            value (cond ((= nindex i) key)
134                        ((equal ntag i) tag1)
135                        (t (read-string (concat "Macro arg nr. "
136                                                (int-to-string i)
137                                                (if opt " (optional)" "")
138                                                ": ")))))
139      (unless (and opt (string= value ""))
140        (insert (if opt "[" "{") value (if opt "]" "}"))))
141    (and repeat (stringp sel) (insert sel))
142    (and key reftex-plug-into-AUCTeX (fboundp 'LaTeX-add-index-entries)
143         (LaTeX-add-index-entries key))
144    (reftex-index-update-taglist tag1)
145    (reftex-notice-new)))
146
147(defun reftex-default-index ()
148  (cond ((null reftex-index-default-tag) nil)
149        ((stringp reftex-index-default-tag) reftex-index-default-tag)
150        (t (or (get reftex-docstruct-symbol 'default-index-tag)
151               "idx"))))
152
153(defun reftex-update-default-index (tag &optional tag-list)
154  (if (and (not (equal tag ""))
155           (stringp tag)
156           (eq reftex-index-default-tag 'last)
157           (or (null tag-list)
158               (member tag tag-list)))
159      (put reftex-docstruct-symbol 'default-index-tag tag)))
160
161;;;###autoload
162(defun reftex-index-complete-tag (&optional itag opt-args)
163  ;; Ask the user for a tag, completing on known tags.
164  ;; ITAG is the argument number which contains the tag.
165  ;; OPT-ARGS is a list of optional argument indices, as given by
166  ;; `reftex-parse-args'.
167  (let* ((opt (and (integerp itag) (member itag opt-args)))
168	 (index-tags (cdr (assq 'index-tags
169				(symbol-value reftex-docstruct-symbol))))
170	 (default (reftex-default-index))
171	 (prompt (concat "Index tag"
172			 (if (or opt default)
173			     (format " (%s): "
174				     (concat
175				      (if opt "optional" "")
176				      (if default
177					  (concat (if opt ", " "")
178						  (format "default %s" default))
179					"")))
180			   ": ")))
181	 (tag (completing-read prompt (mapcar 'list index-tags))))
182    (if (and default (equal tag "")) (setq tag default))
183    (reftex-update-default-index tag)
184    tag))
185
186;;;###autoload
187(defun reftex-index-select-tag ()
188  ;; Have the user select an index tag.
189  ;; FIXME: should we cache tag-alist, prompt and help?
190  (let* ((index-tags (cdr (assoc 'index-tags
191                                 (symbol-value reftex-docstruct-symbol))))
192         (default (reftex-default-index)))
193    (cond
194     ((null index-tags)
195      (error "No index tags available"))
196
197     ((= (length index-tags) 1)
198      ;; Just one index, use it
199      (car index-tags))
200
201     ((> (length index-tags) 1)
202      ;; Several indices, ask.
203      (let* ((tags (copy-sequence index-tags))
204             (cnt 0)
205             tag-alist i val len tag prompt help rpl)
206        ;; Move idx and glo up in the list to ensure ?i and ?g shortcuts
207        (if (member "glo" tags)
208            (setq tags (cons "glo" (delete "glo" tags))))
209        (if (member "idx" tags)
210            (setq tags (cons "idx" (delete "idx" tags))))
211        ;; Find unique shortcuts for each index.
212        (while (setq tag (pop tags))
213          (setq len (length tag)
214                i -1
215                val nil)
216          (catch 'exit
217            (while (and (< (cl-incf i) len) (null val))
218              (unless (assq (aref tag i) tag-alist)
219                (push (list (aref tag i)
220                            tag
221                            (concat (substring tag 0 i)
222                                    "[" (substring tag i (cl-incf i)) "]"
223                                    (substring tag i)))
224                      tag-alist)
225                (throw 'exit t)))
226            (push (list (+ ?0 (cl-incf cnt)) tag
227                        (concat "[" (int-to-string cnt) "]:" tag))
228                  tag-alist)))
229        (setq tag-alist (nreverse tag-alist))
230        ;; Compute Prompt and Help strings
231        (setq prompt
232              (concat
233               (format "Select Index%s: "
234                       (if default (format " (Default <%s>)" default) ""))
235               (mapconcat (lambda(x) (nth 2 x)) tag-alist "  ")))
236        (setq help
237              (concat "Select an Index\n===============\n"
238                      (if default
239                          (format "[^M]  %s (the default)\n" default)
240                        "")
241                      (mapconcat (lambda(x)
242                                   (apply 'format "[%c]   %s" x))
243                                 tag-alist "\n")))
244        ;; Query the user for an index-tag
245        (setq rpl (reftex-select-with-char prompt help 3 t))
246        (message "")
247        (if (and default (equal rpl ?\C-m))
248            default
249          (if (assq rpl tag-alist)
250              (progn
251                (reftex-update-default-index (nth 1 (assq rpl tag-alist)))
252                (nth 1 (assq rpl tag-alist)))
253            (error "No index tag associated with %c" rpl)))))
254     (t (error "This should not happen (reftex-index-select-tag)")))))
255
256;;;###autoload
257(defun reftex-index-complete-key (&optional tag optional initial)
258  ;; Read an index key, with completion.
259  ;; Restrict completion table on index tag TAG.
260  ;; OPTIONAL indicates if the arg is optional.
261  (let* ((table (reftex-sublist-nth
262                 (symbol-value reftex-docstruct-symbol) 6
263                 (lambda(x) (and (eq (car x) 'index)
264                                 (string= (nth 1 x) (or tag ""))))
265                 t))
266         (prompt (concat "Index key" (if optional " (optional)" "") ": "))
267         (key (completing-read prompt table nil nil initial)))
268    key))
269
270(defun reftex-index-update-taglist (newtag)
271  ;; add NEWTAG to the list of available index tags.
272  (let ((cell (assoc 'index-tags (symbol-value reftex-docstruct-symbol))))
273    (and newtag (cdr cell) (not (member newtag (cdr cell)))
274         (push newtag (cdr cell)))))
275
276(define-obsolete-variable-alias
277  'reftex-index-map 'reftex-index-mode-map "24.1")
278(defvar reftex-index-mode-map
279  (let ((map (make-sparse-keymap)))
280    ;; Index map
281    (define-key map (if (featurep 'xemacs) [(button2)] [(mouse-2)])
282      'reftex-index-mouse-goto-line-and-hide)
283    (define-key map [follow-link] 'mouse-face)
284
285    (substitute-key-definition
286     'next-line 'reftex-index-next map global-map)
287    (substitute-key-definition
288     'previous-line 'reftex-index-previous map global-map)
289
290    (define-key map "n" 'reftex-index-next)
291    (define-key map "p" 'reftex-index-previous)
292    (define-key map "?" 'reftex-index-show-help)
293    (define-key map " " 'reftex-index-view-entry)
294    (define-key map "\C-m" 'reftex-index-goto-entry-and-hide)
295    (define-key map "\C-i" 'reftex-index-goto-entry)
296    (define-key map "\C-k" 'reftex-index-kill)
297    (define-key map "r" 'reftex-index-rescan)
298    (define-key map "R" 'reftex-index-Rescan)
299    (define-key map "g" 'revert-buffer)
300    (define-key map "q" 'reftex-index-quit)
301    (define-key map "k" 'reftex-index-quit-and-kill)
302    (define-key map "f" 'reftex-index-toggle-follow)
303    (define-key map "s" 'reftex-index-switch-index-tag)
304    (define-key map "e" 'reftex-index-edit)
305    (define-key map "^" 'reftex-index-level-up)
306    (define-key map "_" 'reftex-index-level-down)
307    (define-key map "}" 'reftex-index-restrict-to-section)
308    (define-key map "{" 'reftex-index-widen)
309    (define-key map ">" 'reftex-index-restriction-forward)
310    (define-key map "<" 'reftex-index-restriction-backward)
311    (define-key map "(" 'reftex-index-toggle-range-beginning)
312    (define-key map ")" 'reftex-index-toggle-range-end)
313    (define-key map "|" 'reftex-index-edit-attribute)
314    (define-key map "@" 'reftex-index-edit-visual)
315    (define-key map "*" 'reftex-index-edit-key)
316    (define-key map "\C-c=" 'reftex-index-goto-toc)
317    (define-key map "c" 'reftex-index-toggle-context)
318
319    ;; The capital letters and the exclamation mark
320    (cl-loop for key across (concat "!" reftex-index-section-letters) do
321             (define-key map (vector (list key))
322               (list 'lambda '() '(interactive)
323                     (list 'reftex-index-goto-letter key))))
324
325    (easy-menu-define reftex-index-menu map
326      "Menu for Index buffer"
327      '("Index"
328        ["Goto section A-Z"
329         (message "To go to a section, just press any of: !%s"
330                  reftex-index-section-letters) t]
331        ["Show Entry" reftex-index-view-entry t]
332        ["Go To Entry" reftex-index-goto-entry t]
333        ["Exit & Go To Entry" reftex-index-goto-entry-and-hide t]
334        ["Table of Contents" reftex-index-goto-toc t]
335        ["Quit" reftex-index-quit t]
336        "--"
337        ("Update"
338         ["Rebuilt *Index* Buffer" revert-buffer t]
339         "--"
340         ["Rescan One File" reftex-index-rescan reftex-enable-partial-scans]
341         ["Rescan Entire Document" reftex-index-Rescan t])
342        ("Restrict"
343         ["Restrict to section" reftex-index-restrict-to-section t]
344         ["Widen" reftex-index-widen reftex-index-restriction-indicator]
345         ["Next Section" reftex-index-restriction-forward
346          reftex-index-restriction-indicator]
347         ["Previous Section" reftex-index-restriction-backward
348          reftex-index-restriction-indicator])
349        ("Edit"
350         ["Edit Entry" reftex-index-edit t]
351         ["Edit Key" reftex-index-edit-key t]
352         ["Edit Attribute" reftex-index-edit-attribute t]
353         ["Edit Visual" reftex-index-edit-visual t]
354         "--"
355         ["Add Parentkey" reftex-index-level-down t]
356         ["Remove Parentkey " reftex-index-level-up t]
357         "--"
358         ["Make Start-of-Range" reftex-index-toggle-range-beginning t]
359         ["Make End-of-Range" reftex-index-toggle-range-end t]
360         "--"
361         ["Kill Entry" reftex-index-kill nil]
362         "--"
363         ["Undo" reftex-index-undo nil])
364        ("Options"
365         ["Context" reftex-index-toggle-context :style toggle
366          :selected reftex-index-include-context]
367         "--"
368         ["Follow Mode" reftex-index-toggle-follow :style toggle
369          :selected reftex-index-follow-mode])
370        "--"
371        ["Help" reftex-index-show-help t]))
372
373    map)
374  "Keymap used for *Index* buffers.")
375
376(defvar reftex-index-menu)
377
378(defvar reftex-last-index-file nil
379  "Stores the file name from which `reftex-display-index' was called.")
380(defvar reftex-index-tag nil
381  "Stores the tag of the index in an index buffer.")
382
383(defvar reftex-index-return-marker (make-marker)
384  "Marker which makes it possible to return from index to old position.")
385
386(defvar reftex-index-restriction-indicator nil)
387(defvar reftex-index-restriction-data nil)
388
389(define-derived-mode reftex-index-mode special-mode "RefTeX Index"
390  "Major mode for managing Index buffers for LaTeX files.
391This buffer was created with RefTeX.
392Press `?' for a summary of important key bindings, or check the menu.
393
394Here are all local bindings.
395
396\\{reftex-index-mode-map}"
397  (set (make-local-variable 'revert-buffer-function) 'reftex-index-revert)
398  (set (make-local-variable 'reftex-index-restriction-data) nil)
399  (set (make-local-variable 'reftex-index-restriction-indicator) nil)
400  (setq mode-line-format
401        (list "----  " 'mode-line-buffer-identification
402              "   " 'global-mode-string
403              "  R<" 'reftex-index-restriction-indicator ">"
404              " -%-"))
405  (setq truncate-lines t)
406  (when (featurep 'xemacs)
407    ;; XEmacs needs the call to make-local-hook
408    (make-local-hook 'post-command-hook)
409    (make-local-hook 'pre-command-hook))
410  (make-local-variable 'reftex-last-follow-point)
411  (easy-menu-add reftex-index-menu reftex-index-mode-map)
412  (add-hook 'post-command-hook 'reftex-index-post-command-hook nil t)
413  (add-hook 'pre-command-hook  'reftex-index-pre-command-hook nil t))
414
415(defconst reftex-index-help
416"                      AVAILABLE KEYS IN INDEX BUFFER
417                      ==============================
418! A..Z     Goto the section of entries starting with this letter.
419n / p      next-entry / previous-entry
420SPC / TAB  Show/Goto the corresponding entry in the LaTeX document.
421RET        Goto the entry and hide the *Index* window (also on mouse-2).
422q / k      Hide/Kill *Index* buffer.
423C-c =      Switch to the TOC buffer.
424f / c      Toggle follow mode             / Toggle display of [c]ontext.
425g          Refresh *Index* buffer.
426r / C-u r  Reparse the LaTeX document     / Reparse entire LaTeX document.
427s          Switch to a different index (for documents with multiple indices).
428e / C-k    Edit/Kill the entry.
429* | @      Edit specific part of entry: [*]key [|]attribute [@]visual
430           With prefix: kill that part.
431\( )        Toggle entry's beginning/end of page range property.
432_ ^        Add/Remove parent key (to make this item a subitem).
433} / {      Restrict Index to a single document section / Widen.
434< / >      When restricted, move restriction to previous/next section.")
435
436;;;###autoload
437(defun reftex-index-show-entry (data &optional no-revisit)
438  ;; Find an index entry associated with DATA and display it highlighted
439  ;; in another window.  NO-REVISIT means we are not allowed to visit
440  ;; files for this.
441  ;; Note:  This function just looks for the nearest match of the
442  ;; context string and may fail if the entry moved and an identical
443  ;; entry is close to the old position.  Frequent rescans make this
444  ;; safer.
445  (let* ((file (nth 3 data))
446         (literal (nth 2 data))
447         (pos (nth 4 data))
448         (re (regexp-quote literal))
449         (match
450          (cond
451           ((or (not no-revisit)
452                (reftex-get-buffer-visiting file))
453            (switch-to-buffer-other-window
454             (reftex-get-file-buffer-force file nil))
455            (goto-char (or pos (point-min)))
456            (or (looking-at re)
457                (reftex-nearest-match re (length literal))))
458           (t (message "%s" reftex-no-follow-message) nil))))
459    (when match
460      (goto-char (match-beginning 0))
461      (recenter '(4))
462      (reftex-highlight 0 (match-beginning 0) (match-end 0) (current-buffer)))
463    match))
464
465;;;###autoload
466(defun reftex-display-index (&optional tag overriding-restriction redo
467                                       &rest locations)
468  "Display a buffer with an index compiled from the current document.
469When the document has multiple indices, first prompts for the correct one.
470When index support is turned off, offer to turn it on.
471With one or two `C-u' prefixes, rescan document first.
472With prefix 2, restrict index to current document section.
473With prefix 3, restrict index to region."
474
475  (interactive)
476
477  ;; Ensure access to scanning info and rescan buffer if prefix arg is '(4).
478  (let ((current-prefix-arg current-prefix-arg))
479    (reftex-ensure-index-support t)
480    (reftex-access-scan-info current-prefix-arg))
481
482  (set-marker reftex-index-return-marker (point))
483  (setq reftex-last-follow-point 1)
484
485  ;; Determine the correct index to process
486  (let* ((docstruct (symbol-value reftex-docstruct-symbol))
487         (docstruct-symbol reftex-docstruct-symbol)
488         (index-tag (or tag (reftex-index-select-tag)))
489         (master (reftex-TeX-master-file))
490         (calling-file (buffer-file-name))
491         (restriction
492          (or overriding-restriction
493              (and (not redo)
494                   (reftex-get-restriction current-prefix-arg docstruct))))
495         (locations
496          ;; See if we are on an index macro as initial position
497          (or locations
498              (let* ((what-macro (reftex-what-macro-safe 1))
499                     (macro (car what-macro))
500                     (here-I-am (when (member macro reftex-macros-with-index)
501                                  (save-excursion
502                                    (goto-char (+ (cdr what-macro)
503                                                  (length macro)))
504                                    (reftex-move-over-touching-args)
505                                    (reftex-where-am-I)))))
506                (if (eq (car (car here-I-am)) 'index)
507                    (list (car here-I-am))))))
508         buffer-name)
509
510    (setq buffer-name (reftex-make-index-buffer-name index-tag))
511
512    ;; Goto the buffer and put it into the correct mode
513
514    (when (or restriction current-prefix-arg)
515         (reftex-kill-buffer buffer-name))
516
517    (if (get-buffer-window buffer-name)
518        (select-window (get-buffer-window buffer-name))
519      (switch-to-buffer buffer-name))
520
521    (or (eq major-mode 'reftex-index-mode) (reftex-index-mode))
522
523    ;; If the buffer is currently restricted, empty it to force update.
524    (when reftex-index-restriction-data
525      (reftex-erase-buffer))
526    (set (make-local-variable 'reftex-last-index-file) calling-file)
527    (set (make-local-variable 'reftex-index-tag) index-tag)
528    (set (make-local-variable 'reftex-docstruct-symbol) docstruct-symbol)
529    (if restriction
530        (setq reftex-index-restriction-indicator (car restriction)
531              reftex-index-restriction-data (cdr restriction))
532      (if (not redo)
533          (setq reftex-index-restriction-indicator nil
534                reftex-index-restriction-data nil)))
535    (when (= (buffer-size) 0)
536      ;; buffer is empty - fill it
537      (message "Building %s buffer..." buffer-name)
538
539      (setq buffer-read-only nil)
540      (insert (format
541               "INDEX <%s> on %s
542Restriction: <%s>
543SPC=view TAB=goto RET=goto+hide [e]dit [q]uit [r]escan [f]ollow [?]Help
544------------------------------------------------------------------------------
545"
546               index-tag (abbreviate-file-name master)
547               (if (eq (car (car reftex-index-restriction-data)) 'toc)
548                   (nth 2 (car reftex-index-restriction-data))
549                 reftex-index-restriction-indicator)))
550
551      (if (reftex-use-fonts)
552          (put-text-property (point-min) (point)
553                             'face reftex-index-header-face))
554      (if (fboundp 'cursor-intangible-mode)
555          (cursor-intangible-mode 1)
556        ;; If `cursor-intangible' is not available, fallback on the old
557        ;; intrusive `intangible' property.
558        (put-text-property (point-min) (point) 'intangible t))
559      (add-text-properties (point-min) (point)
560                           '(cursor-intangible t
561                             front-sticky (cursor-intangible)
562                             rear-nonsticky (cursor-intangible)))
563
564      (reftex-insert-index docstruct index-tag)
565      (goto-char (point-min))
566      (run-hooks 'reftex-display-copied-context-hook)
567      (message "Building %s buffer...done." buffer-name)
568      (setq buffer-read-only t))
569    (and locations (apply 'reftex-find-start-point (point) locations))
570    (if reftex-index-restriction-indicator
571        (message "Index restricted: <%s>" reftex-index-restriction-indicator))))
572
573(defun reftex-insert-index (docstruct tag &optional update-one remark)
574  ;; Insert an index into the current buffer.  Entries are from the
575  ;; DOCSTRUCT.
576  ;; TAG is the subindex to process.
577  ;; UPDATE-ONE: When non-nil, delete the entry at point and replace
578  ;; it with whatever the DOCSTRUCT contains.
579  ;; REMARK can be a note to add to the entry.
580  (let* ((all docstruct)
581         (indent "   ")
582         (context reftex-index-include-context)
583         (context-indent (concat indent "  "))
584         (section-chars (mapcar 'identity reftex-index-section-letters))
585         (this-section-char 0)
586         (font (reftex-use-fonts))
587         (bor (car reftex-index-restriction-data))
588         (eor (nth 1 reftex-index-restriction-data))
589         (mouse-face
590          (if (memq reftex-highlight-selection '(mouse both))
591              reftex-mouse-selected-face
592            nil))
593         (index-face reftex-label-face)
594         sublist cell from to first-char)
595
596    ;; Make the sublist and sort it
597    (when bor
598      (setq all (or (memq bor all) all)))
599
600    (while (setq cell (pop all))
601      (if (eq cell eor)
602          (setq all nil)
603        (and (eq (car cell) 'index)
604             (equal (nth 1 cell) tag)
605             (push cell sublist))))
606    (setq sublist (sort (nreverse sublist)
607                        (lambda (a b) (string< (nth 8 a) (nth 8 b)))))
608
609    (when update-one
610      ;; Delete the entry at place
611      (and (bolp) (forward-char 1))
612      (delete-region (previous-single-property-change (1+ (point)) :data)
613                     (or (next-single-property-change (point) :data)
614                         (point-max))))
615
616    ;; Walk through the list and insert all entries
617    (while (setq cell (pop sublist))
618      (unless update-one
619        (setq first-char (upcase (string-to-char (nth 6 cell))))
620        (when (and (not (equal first-char this-section-char))
621                   (member first-char section-chars))
622          ;; There is a new initial letter, so start a new section
623          (reftex-index-insert-new-letter first-char font)
624          (setq section-chars (delete first-char section-chars)
625                this-section-char first-char))
626        (when (= this-section-char 0)
627          (setq this-section-char ?!)
628          (reftex-index-insert-new-letter this-section-char font)))
629
630      (setq from (point))
631      (insert indent (nth 7 cell))
632      (when font
633        (setq to (point))
634        (put-text-property
635         (- (point) (length (nth 7 cell))) to
636         'face index-face)
637        (goto-char to))
638
639      (when (or remark (nth 9 cell))
640        (and (< (current-column) 40)
641             ;; FIXME: maybe this is too slow?
642             (insert (make-string (max (- 40 (current-column)) 0) ?\ )))
643        (and (nth 9 cell) (insert "   " (substring (nth 5 cell) (nth 9 cell))))
644        (and remark (insert "     " remark)))
645
646      (insert "\n")
647      (setq to (point))
648
649      (when context
650        (insert context-indent (nth 2 cell) "\n")
651        (setq to (point)))
652      (put-text-property from to :data cell)
653      (when mouse-face
654        (put-text-property from (1- to)
655                           'mouse-face mouse-face))
656      (goto-char to))))
657
658
659(defun reftex-index-insert-new-letter (letter &optional font)
660  ;; Start a new section in the index
661  (let ((from (point)))
662    (insert "\n" letter letter letter
663            "-----------------------------------------------------------------")
664    (when font
665      (put-text-property from (point) 'face reftex-index-section-face))
666    (insert "\n")))
667
668(defun reftex-get-restriction (arg docstruct)
669  ;; Interpret the prefix ARG and derive index restriction specs.
670  (let* ((beg (min (point) (or (condition-case nil (mark) (error nil))
671                               (point-max))))
672         (end (max (point) (or (condition-case nil (mark) (error nil))
673                               (point-min))))
674         bor eor label here-I-am)
675    (cond
676     ((eq arg 2)
677      (setq here-I-am (car (reftex-where-am-I))
678            bor (if (eq (car here-I-am) 'toc)
679                    here-I-am
680                  (reftex-last-assoc-before-elt
681                   'toc here-I-am docstruct))
682            eor (car (memq (assq 'toc (cdr (memq bor docstruct))) docstruct))
683            label (nth 6 bor)))
684     ((eq arg 3)
685      (save-excursion
686        (setq label "region")
687        (goto-char beg)
688        (setq bor (car (reftex-where-am-I)))
689        (setq bor (nth 1 (memq bor docstruct)))
690        (goto-char end)
691        (setq eor (nth 1 (memq (car (reftex-where-am-I)) docstruct)))))
692     (t nil))
693    (if (and label (or bor eor))
694        (list label bor eor)
695      nil)))
696
697(defun reftex-index-pre-command-hook ()
698  ;; Used as pre command hook in *Index* buffer
699  (reftex-unhighlight 0)
700  (reftex-unhighlight 1))
701
702(defun reftex-index-post-command-hook ()
703  ;; Used in the post-command-hook for the *Index* buffer
704  ;; FIXME: Lots of redundancy with reftex-toc-post-command-hook!
705  (when (get-text-property (point) :data)
706    (and (> (point) 1) ;FIXME: Is this point-min or do we care about narrowing?
707         (not (get-text-property (point) 'cursor-intangible))
708         (memq reftex-highlight-selection '(cursor both))
709         (reftex-highlight 1
710           (or (previous-single-property-change (1+ (point)) :data)
711               (point-min))
712           (or (next-single-property-change (point) :data)
713               (point-max)))))
714  (if (integerp reftex-index-follow-mode)
715      ;; Remove delayed action
716      (setq reftex-index-follow-mode t)
717    (and reftex-index-follow-mode
718         (not (equal reftex-last-follow-point (point)))
719         ;; Show context in other window
720         (setq reftex-last-follow-point (point))
721         (condition-case nil
722             (reftex-index-visit-location nil (not reftex-revisit-to-follow))
723           (error t)))))
724
725(defun reftex-index-show-help ()
726  "Show a summary of special key bindings."
727  (interactive)
728  (with-output-to-temp-buffer "*RefTeX Help*"
729    (princ reftex-index-help))
730  (reftex-enlarge-to-fit "*RefTeX Help*" t)
731  ;; If follow mode is active, arrange to delay it one command
732  (if reftex-index-follow-mode
733      (setq reftex-index-follow-mode 1)))
734
735(defun reftex-index-next (&optional arg)
736  "Move to next selectable item."
737  (interactive "p")
738  (setq reftex-callback-fwd t)
739  (or (eobp) (forward-char 1))
740  (goto-char (or (next-single-property-change (point) :data)
741                 (point)))
742  (unless (get-text-property (point) :data)
743    (goto-char (or (next-single-property-change (point) :data)
744                   (point)))))
745(defun reftex-index-previous (&optional arg)
746  "Move to previous selectable item."
747  (interactive "p")
748  (setq reftex-callback-fwd nil)
749  (goto-char (or (previous-single-property-change (point) :data)
750                 (point)))
751  (unless (get-text-property (point) :data)
752    (goto-char (or (previous-single-property-change (point) :data)
753                   (point)))))
754(defun reftex-index-toggle-follow ()
755  "Toggle follow (other window follows with context)."
756  (interactive)
757  (setq reftex-last-follow-point -1)
758  (setq reftex-index-follow-mode (not reftex-index-follow-mode)))
759(defun reftex-index-toggle-context ()
760  "Toggle inclusion of label context in *Index* buffer.
761Label context is only displayed when the labels are there as well."
762  (interactive)
763  (setq reftex-index-include-context (not reftex-index-include-context))
764  (reftex-index-revert))
765(defun reftex-index-view-entry ()
766  "View document location in other window."
767  (interactive)
768  (reftex-index-visit-location))
769(defun reftex-index-goto-entry-and-hide ()
770  "Go to document location in other window.  Hide the *Index* window."
771  (interactive)
772  (reftex-index-visit-location 'hide))
773(defun reftex-index-goto-entry ()
774  "Go to document location in other window.  *Index* window stays."
775  (interactive)
776  (reftex-index-visit-location t))
777(defun reftex-index-mouse-goto-line-and-hide (ev)
778  "Go to document location in other window.  Hide the *Index* window."
779  (interactive "e")
780  (mouse-set-point ev)
781  (reftex-index-visit-location 'hide))
782(defun reftex-index-quit ()
783  "Hide the *Index* window and do not move point."
784  (interactive)
785  (or (one-window-p) (delete-window))
786  (switch-to-buffer (marker-buffer reftex-index-return-marker))
787  (goto-char (or (marker-position reftex-index-return-marker) (point))))
788(defun reftex-index-quit-and-kill ()
789  "Kill the *Index* buffer."
790  (interactive)
791  (kill-buffer (current-buffer))
792  (or (one-window-p) (delete-window))
793  (switch-to-buffer (marker-buffer reftex-index-return-marker))
794  (goto-char (or (marker-position reftex-index-return-marker) (point))))
795(defun reftex-index-goto-toc (&rest ignore)
796  "Switch to the table of contents of the current document.
797The function will go to the section where the entry at point was defined."
798  (interactive)
799  (if (get-text-property (point) :data)
800      (reftex-index-goto-entry)
801    (switch-to-buffer (marker-buffer reftex-index-return-marker)))
802  (delete-other-windows)
803  (reftex-toc))
804(defun reftex-index-rescan (&rest ignore)
805  "Regenerate the *Index* buffer after reparsing file of section at point."
806  (interactive)
807  (let ((index-tag reftex-index-tag))
808    (if (and reftex-enable-partial-scans
809             (null current-prefix-arg))
810        (let* ((data (get-text-property (point) :data))
811               (file (nth 3 data))
812               (line (+ (count-lines (point-min) (point)) (if (bolp) 1 0))))
813          (if (not file)
814              (error "Don't know which file to rescan.  Try `C-u r'")
815            (switch-to-buffer (reftex-get-file-buffer-force file))
816            (setq current-prefix-arg '(4))
817            (reftex-display-index index-tag nil 'redo line)))
818      (reftex-index-Rescan))
819    (reftex-kill-temporary-buffers)))
820(defun reftex-index-Rescan (&rest ignore)
821  "Regenerate the *Index* buffer after reparsing the entire document."
822  (interactive)
823  (let ((index-tag reftex-index-tag)
824        (line (+ (count-lines (point-min) (point)) (if (bolp) 1 0))))
825    (switch-to-buffer
826     (reftex-get-file-buffer-force reftex-last-index-file))
827    (setq current-prefix-arg '(16))
828    (reftex-display-index index-tag nil 'redo line)))
829(defun reftex-index-revert (&rest ignore)
830  "Regenerate the *Index* from the internal lists.  No reparsing os done."
831  (interactive)
832  (let ((buf (current-buffer))
833        (index-tag reftex-index-tag)
834        (data (get-text-property (point) :data))
835        (line (+ (count-lines (point-min) (point)) (if (bolp) 1 0))))
836    (switch-to-buffer
837     (reftex-get-file-buffer-force reftex-last-index-file))
838    (reftex-erase-buffer buf)
839    (setq current-prefix-arg nil
840          reftex-last-follow-point 1)
841    (reftex-display-index index-tag nil 'redo data line)))
842(defun reftex-index-switch-index-tag (&rest ignore)
843  "Switch to a different index of the same document."
844  (interactive)
845  (switch-to-buffer
846   (reftex-get-file-buffer-force reftex-last-index-file))
847  (setq current-prefix-arg nil)
848  (reftex-display-index nil nil 'redo))
849
850(defun reftex-index-restrict-to-section (&optional force)
851  "Restrict index to entries defined in same document sect. as entry at point."
852  ;; Optional FORCE means, even if point is not on an index entry.
853  (interactive)
854  (let* ((data (get-text-property (point) :data))
855         (docstruct (symbol-value reftex-docstruct-symbol))
856         bor eor)
857    (if (and (not data) force)
858        (setq data (assq 'toc docstruct)))
859    (when data
860      (setq bor (reftex-last-assoc-before-elt 'toc data docstruct)
861            eor (car (memq (assq 'toc (cdr (memq bor docstruct)))
862                           docstruct))
863            reftex-index-restriction-data (list bor eor)
864            reftex-index-restriction-indicator (nth 6 bor) )))
865  (reftex-index-revert))
866
867(defun reftex-index-widen (&rest ignore)
868  "Show the unrestricted index (all entries)."
869  (interactive)
870  (setq reftex-index-restriction-indicator nil
871        reftex-index-restriction-data nil)
872  (reftex-index-revert)
873  (message "Index widened"))
874(defun reftex-index-restriction-forward (&rest ignore)
875  "Restrict to previous section.
876When index is currently unrestricted, restrict it to a section.
877When index is restricted, select the next section as restriction criterion."
878  (interactive)
879  (let* ((docstruct (symbol-value reftex-docstruct-symbol))
880         (bor (nth 1 reftex-index-restriction-data)))
881    (if (or (not bor)
882            (not (eq (car bor) 'toc)))
883        (reftex-index-restrict-to-section t)
884      (setq reftex-index-restriction-indicator (nth 6 bor)
885            reftex-index-restriction-data
886            (list bor
887                  (car (memq (assq 'toc (cdr (memq bor docstruct)))
888                             docstruct))))
889      (reftex-index-revert))))
890(defun reftex-index-restriction-backward (&rest ignore)
891  "Restrict to next section.
892When index is currently unrestricted, restrict it to a section.
893When index is restricted, select the previous section as restriction criterion."
894  (interactive)
895  (let* ((docstruct (symbol-value reftex-docstruct-symbol))
896         (eor (car reftex-index-restriction-data))
897         (bor (reftex-last-assoc-before-elt 'toc eor docstruct t)))
898    (if (or (not bor)
899            (not (eq (car bor) 'toc)))
900        (reftex-index-restrict-to-section t)
901      (setq reftex-index-restriction-indicator (nth 6 bor)
902            reftex-index-restriction-data
903            (list bor eor))
904      (reftex-index-revert))))
905
906(defun reftex-index-visit-location (&optional final no-revisit)
907  ;; Visit the tex file corresponding to the index entry on the current line.
908  ;; If FINAL is t, stay there
909  ;; If FINAL is 'hide, hide the *Index* window.
910  ;; Otherwise, move cursor back into *Index* window.
911  ;; NO-REVISIT means don't visit files, just use live buffers.
912
913  (let* ((data (get-text-property (point) :data))
914         (index-window (selected-window))
915         show-window show-buffer match)
916
917    (unless data (error "Don't know which index entry to visit"))
918
919    (if (eq (car data) 'index)
920        (setq match (reftex-index-show-entry data no-revisit)))
921
922    (setq show-window (selected-window)
923          show-buffer (current-buffer))
924
925    (unless match
926      (select-window index-window)
927      (error "Cannot find location"))
928
929    (select-window index-window)
930
931    ;; Use the `final' parameter to decide what to do next
932    (cond
933     ((eq final t)
934      (reftex-unhighlight 0)
935      (select-window show-window))
936     ((eq final 'hide)
937      (reftex-unhighlight 0)
938      (or (one-window-p) (delete-window))
939      (switch-to-buffer show-buffer))
940     (t nil))))
941
942(defun reftex-index-analyze-entry (data)
943  ;; This splits the index context so that key, attribute and visual
944  ;; values are accessible individually.
945  (interactive)
946  (let* ((arg (nth 5 data))
947         (context (nth 2 data))
948         (sc reftex-index-special-chars)
949         (boa (if (string-match (regexp-quote (concat "{" arg "}")) context)
950                  (1+ (match-beginning 0))
951                (error "Something is wrong here")))
952         (eoa (1- (match-end 0)))
953         (boactual (if (string-match (concat "[^" (nth 3 sc) "]" (nth 2 sc))
954                                     context boa)
955                       (1+ (match-beginning 0))
956                     eoa))
957         (boattr (if (string-match (concat "[^" (nth 3 sc) "]" (nth 1 sc))
958                                   context boa)
959                     (1+ (match-beginning 0))
960                   boactual))
961         (pre (substring context 0 boa))
962         (key (substring context boa boattr))
963         (attr (substring context boattr boactual))
964         (actual (substring context boactual eoa))
965         (post (substring context eoa)))
966    (list pre key attr actual post)))
967
968(defun reftex-index-edit ()
969  "Edit the index entry at point."
970  (interactive)
971  (let* ((data (get-text-property (point) :data))
972         old new)
973    (unless data (error "Don't know which index entry to edit"))
974    (reftex-index-view-entry)
975    (setq old (nth 2 data) new (read-string "Edit: " old))
976    (reftex-index-change-entry new)))
977
978(defun reftex-index-toggle-range-beginning ()
979  "Toggle the page range start attribute `|('."
980  (interactive)
981  (let* ((data (get-text-property (point) :data))
982         (bor (concat (nth 1 reftex-index-special-chars) "("))
983         new analyze attr)
984    (unless data (error "Don't know which index entry to edit"))
985    (setq analyze (reftex-index-analyze-entry data)
986          attr (nth 2 analyze))
987    (setf (nth 2 analyze) (if (string= attr bor) "" bor))
988    (setq new (apply 'concat analyze))
989    (reftex-index-change-entry
990     new (if (string= (nth 2 analyze) bor)
991             "Entry is now START-OF-PAGE-RANGE"
992           "START-OF-PAGE-RANGE canceled"))))
993
994(defun reftex-index-toggle-range-end ()
995  "Toggle the page-range-end attribute `|)'."
996  (interactive)
997  (let* ((data (get-text-property (point) :data))
998         (eor (concat (nth 1 reftex-index-special-chars) ")"))
999         new analyze attr)
1000    (unless data (error "Don't know which index entry to edit"))
1001    (setq analyze (reftex-index-analyze-entry data)
1002          attr (nth 2 analyze))
1003    (setf (nth 2 analyze) (if (string= attr eor) "" eor))
1004    (setq new (apply 'concat analyze))
1005    (reftex-index-change-entry
1006     new (if (string= (nth 2 analyze) eor)
1007             "Entry is now END-OF-PAGE-RANGE"
1008           "END-OF-PAGE-RANGE canceled"))))
1009
1010(defun reftex-index-edit-key ()
1011  "Edit the KEY part of the index entry."
1012  (interactive)
1013  (reftex-index-edit-part nil 1 "" "Key: " t))
1014
1015(defun reftex-index-edit-attribute (&optional arg)
1016  "EDIT the ATTRIBUTE part of the entry.  With arg: remove entire ATTRIBUTE."
1017  (interactive "P")
1018  (reftex-index-edit-part arg 2 (nth 1 reftex-index-special-chars)
1019                          "Attribute: "))
1020
1021(defun reftex-index-edit-visual (&optional arg)
1022  "EDIT the VISUAL part of the entry.  With arg: remove entire VISUAL string."
1023  (interactive "P")
1024  (reftex-index-edit-part arg 3 (nth 2 reftex-index-special-chars) "Visual: "))
1025
1026(defun reftex-index-edit-part (arg n initial prompt &optional dont-allow-empty)
1027  ;; This function does the work for all partial editing commands
1028  (let* ((data (get-text-property (point) :data))
1029         new analyze opart npart)
1030    (unless data (error "Don't know which index entry to edit"))
1031    ;; Analyze the whole context string
1032    (setq analyze (reftex-index-analyze-entry data)
1033          opart (nth n analyze))
1034    (and (> (length opart) 0) (setq opart (substring opart 1)))
1035    ;; Have the user editing the part
1036    (setq npart (if arg "" (read-string (concat prompt initial) opart)))
1037    ;; Tests:
1038    (cond ((string= npart opart)
1039           (error "Not changed"))
1040          ((string= npart "")
1041           (if dont-allow-empty
1042               (error "Invalid value")
1043             (setf (nth n analyze) npart)))
1044          (t (setf (nth n analyze) (concat initial npart))))
1045    (setq new (apply 'concat analyze))
1046    ;; Change the entry and insert the changed version into the index.
1047    (reftex-index-change-entry
1048     new (if (string= npart "")
1049             (format "Deleted: %s" opart)
1050           (format "New value is: %s" npart)))))
1051
1052(defun reftex-index-level-down ()
1053  "Make index entry a subitem of another entry."
1054  (interactive)
1055  (let* ((data (get-text-property (point) :data))
1056         (docstruct (symbol-value reftex-docstruct-symbol))
1057         old new prefix key)
1058    (unless data (error "Don't know which index entry to change"))
1059    (setq old (nth 2 data)
1060          key (nth 6 data)
1061          prefix (completing-read
1062                  "Prefix: "
1063                  (reftex-sublist-nth
1064                   docstruct 6
1065                   (lambda (x)
1066                     (and (eq (car x) 'index)
1067                          (string= (nth 1 x) reftex-index-tag))) t)))
1068    (unless (string-match
1069             (concat (regexp-quote (car reftex-index-special-chars)) "\\'")
1070             prefix)
1071      (setq prefix (concat prefix (car reftex-index-special-chars))))
1072    (if (string-match (regexp-quote key) old)
1073        (setq new (replace-match (concat prefix key) t t old))
1074      (error "Cannot construct new index key"))
1075    (reftex-index-change-entry new (format "Added prefix: %s" prefix))))
1076
1077(defun reftex-index-level-up ()
1078  "Remove the highest level of a hierarchical index entry."
1079  (interactive)
1080  (let* ((data (get-text-property (point) :data))
1081         old new prefix)
1082    (unless data (error "Don't know which entry to change"))
1083    (setq old (nth 2 data))
1084    (if (string-match (concat "{\\([^" (nth 0 reftex-index-special-chars) "]*"
1085                              "[^" (nth 3 reftex-index-special-chars) "]"
1086                              (regexp-quote (nth 0 reftex-index-special-chars))
1087                              "\\)")
1088                      old)
1089        (setq prefix (substring old (match-beginning 1) (match-end 1))
1090              new (concat (substring old 0 (match-beginning 1))
1091                          (substring old (match-end 1))))
1092      (error "Entry is not a subitem"))
1093    (reftex-index-change-entry new (format "Removed prefix: %s" prefix))))
1094
1095(defun reftex-index-kill ()
1096  "FIXME: Not yet implemented."
1097  (interactive)
1098  (error "This function is currently not implemented"))
1099
1100(defun reftex-index-undo ()
1101  "FIXME: Not yet implemented."
1102  (interactive)
1103  (error "This function is currently not implemented"))
1104
1105(defun reftex-index-change-entry (new &optional message)
1106  ;; Change the full context string of the index entry at point to
1107  ;; NEW.  This actually edits the buffer where the entry is defined.
1108
1109  (let* ((data (get-text-property (point) :data))
1110         old beg end info)
1111    (unless data (error "Cannot change entry"))
1112    (reftex-index-view-entry)
1113    (setq beg (match-beginning 0) end (match-end 0))
1114    (setq old (nth 2 data))
1115    (and (equal old new) (error "Entry unchanged"))
1116    (with-current-buffer (get-file-buffer (nth 3 data))
1117      (goto-char beg)
1118      (unless (looking-at (regexp-quote old))
1119        (error "This should not happen (reftex-index-change-entry)"))
1120      (delete-region beg end)
1121      (insert new)
1122      (goto-char (1- beg))
1123      (when (and (re-search-forward (reftex-everything-regexp) nil t)
1124                 (match-end 10)
1125                 (< (abs (- (match-beginning 10) beg)) (length new))
1126                 (setq info (reftex-index-info-safe buffer-file-name)))
1127        (setcdr data (cdr info))))
1128    (let ((buffer-read-only nil))
1129      (save-excursion
1130        (reftex-insert-index (list data) reftex-index-tag t
1131                             "EDITED")))
1132    (setq reftex-last-follow-point 1)
1133    (and message (message "%s" message))))
1134
1135(defun reftex-index-goto-letter (char)
1136  "Go to the CHAR section in the index."
1137  (let ((pos (point))
1138        (case-fold-search nil))
1139    (goto-char (point-min))
1140    (forward-line 2)
1141    (if (re-search-forward (concat "^" (char-to-string char)) nil t)
1142        (progn
1143          (beginning-of-line)
1144          (recenter 0)
1145          (reftex-index-next))
1146      (goto-char pos)
1147      (if (eq char ?!)
1148          (error "This <%s> index does not contain entries sorted before the letters"
1149                 reftex-index-tag)
1150        (error "This <%s> index does not contain entries starting with `%c'"
1151               reftex-index-tag char)))))
1152
1153
1154;;----------------------------------------------------------------------
1155;; The Index Phrases File
1156
1157;; Some constants and variables
1158(defconst reftex-index-phrases-comment-regexp "^[ \t]*%.*"
1159  "Regular expression to match comment lines in phrases buffer")
1160(defconst reftex-index-phrases-macrodef-regexp
1161  "^\\(>>>INDEX_MACRO_DEFINITION:\\)[ \t]+\\(\\S-\\)\\( *\t[ \t]*\\)\\([^\t]*[^ \t]\\)\\( *\t[ \t]*\\)\\(\\S-+\\)"
1162  "Regular expression to match macro definition lines the phrases buffer.")
1163;(defconst reftex-index-phrases-macrodef-regexp
1164;  "^\\(>>>INDEX_MACRO_DEFINITION:\\)[ \t]+\\(\\S-\\)\\([ \t]*\\)\\([^\t]*[^ \t]\\)\\([ \t]*\\)\\(nil\\|t\\)[ \t]*$"
1165;  "Regular expression to match macro definition lines the phrases buffer.
1166;This version would allow just spaces as separators.")
1167(defconst reftex-index-phrases-phrase-regexp1
1168  "^\\(\\S-?\\)\\(\t\\)\\([^\t\n]*\\S-\\)\\([ \t]*\\)$"
1169  "Regular expression matching phrases which have no separate index key.")
1170(defconst reftex-index-phrases-phrase-regexp2
1171  "^\\(\\S-?\\)\\(\t\\)\\([^\t]*\\S-\\)\\(\t[ \t]*\\)\\([^\n\t]*\\S-\\)[ \t]*$"
1172  "Regular expression matching phrases which have a separate index key.")
1173(defconst reftex-index-phrases-phrase-regexp12
1174  "^\\(\\S-?\\)\\(\t\\)\\([^\n\t]*\\S-\\)\\(\\(\t[ \t]*\\)\\([^\n\t]*\\S-\\)\\)?[ \t]*$"
1175  "Regular expression matching all types of phrase lines.")
1176(defvar reftex-index-phrases-macro-data nil
1177  "Alist containing the information taken from the macro definition lines.
1178This gets refreshed in every phrases command.")
1179(defvar reftex-index-phrases-files nil
1180  "List of document files relevant for the phrases file.")
1181
1182(defvar reftex-index-phrases-font-lock-keywords nil
1183  "Font lock keywords for reftex-index-phrases-mode.")
1184(defvar reftex-index-phrases-font-lock-defaults nil
1185  "Font lock defaults for reftex-index-phrases-mode.")
1186(define-obsolete-variable-alias
1187  'reftex-index-phrases-map 'reftex-index-phrases-mode-map "24.1")
1188(defvar reftex-index-phrases-mode-map
1189  (let ((map (make-sparse-keymap)))
1190    ;; Keybindings and Menu for phrases buffer
1191    (define-key map "\C-c\C-c" 'reftex-index-phrases-save-and-return)
1192    (define-key map "\C-c\C-x" 'reftex-index-this-phrase)
1193    (define-key map "\C-c\C-f" 'reftex-index-next-phrase)
1194    (define-key map "\C-c\C-r" 'reftex-index-region-phrases)
1195    (define-key map "\C-c\C-a" 'reftex-index-all-phrases)
1196    (define-key map "\C-c\C-d" 'reftex-index-remaining-phrases)
1197    (define-key map "\C-c\C-s" 'reftex-index-sort-phrases)
1198    (define-key map "\C-c\C-n" 'reftex-index-new-phrase)
1199    (define-key map "\C-c\C-m" 'reftex-index-phrases-set-macro-key)
1200    (define-key map "\C-c\C-i" 'reftex-index-phrases-info)
1201    (define-key map "\C-c\C-t" 'reftex-index-find-next-conflict-phrase)
1202    (define-key map "\C-i" 'self-insert-command)
1203
1204    (easy-menu-define reftex-index-phrases-menu map
1205      "Menu for Phrases buffer"
1206      '("Phrases"
1207        ["New Phrase" reftex-index-new-phrase t]
1208        ["Set Phrase Macro" reftex-index-phrases-set-macro-key t]
1209        ["Recreate File Header" reftex-index-initialize-phrases-buffer t]
1210        "--"
1211        ("Sort Phrases"
1212         ["Sort" reftex-index-sort-phrases t]
1213         "--"
1214         "Sort Options"
1215         ["by Search Phrase" (setq reftex-index-phrases-sort-prefers-entry nil)
1216          :style radio :selected (not reftex-index-phrases-sort-prefers-entry)]
1217         ["by Index Entry" (setq reftex-index-phrases-sort-prefers-entry t)
1218          :style radio :selected reftex-index-phrases-sort-prefers-entry]
1219         ["in Blocks" (setq reftex-index-phrases-sort-in-blocks
1220                            (not reftex-index-phrases-sort-in-blocks))
1221          :style toggle :selected reftex-index-phrases-sort-in-blocks])
1222        ["Describe Phrase" reftex-index-phrases-info t]
1223        ["Next Phrase Conflict" reftex-index-find-next-conflict-phrase t]
1224        "--"
1225        ("Find and Index in Document"
1226         ["Current Phrase" reftex-index-this-phrase t]
1227         ["Next Phrase" reftex-index-next-phrase t]
1228         ["Current and Following" reftex-index-remaining-phrases t]
1229         ["Region Phrases" reftex-index-region-phrases t]
1230         ["All Phrases" reftex-index-all-phrases t]
1231         "--"
1232         "Options"
1233         ["Match Whole Words" (setq reftex-index-phrases-search-whole-words
1234                                    (not reftex-index-phrases-search-whole-words))
1235          :style toggle :selected reftex-index-phrases-search-whole-words]
1236         ["Case Sensitive Search" (setq reftex-index-phrases-case-fold-search
1237                                        (not  reftex-index-phrases-case-fold-search))
1238          :style toggle :selected (not
1239                                   reftex-index-phrases-case-fold-search)]
1240         ["Wrap Long Lines" (setq reftex-index-phrases-wrap-long-lines
1241                                  (not reftex-index-phrases-wrap-long-lines))
1242          :style toggle :selected reftex-index-phrases-wrap-long-lines]
1243         ["Skip Indexed Matches" (setq reftex-index-phrases-skip-indexed-matches
1244                                       (not reftex-index-phrases-skip-indexed-matches))
1245          :style toggle :selected reftex-index-phrases-skip-indexed-matches])
1246        "--"
1247        ["Save and Return" reftex-index-phrases-save-and-return t]))
1248
1249    map)
1250  "Keymap used for index phrases buffer.")
1251(defvar reftex-index-phrases-syntax-table
1252  (let ((table (make-syntax-table)))
1253    (modify-syntax-entry ?\" "." table)
1254    table)
1255  "Syntax table for RefTeX Index Phrases mode.")
1256
1257;;;###autoload
1258(defun reftex-index-phrase-selection-or-word (arg)
1259  "Add current selection or word at point to the phrases buffer.
1260When you are in transient-mark-mode and the region is active, the
1261selection will be used - otherwise the word at point.
1262You get a chance to edit the entry in the phrases buffer - finish with
1263`C-c C-c'."
1264  (interactive "P")
1265  (set-marker reftex-index-return-marker (point))
1266  (reftex-index-selection-or-word arg 'phrase)
1267  (if (eq major-mode 'reftex-index-phrases-mode)
1268      (message "%s"
1269       (substitute-command-keys
1270        "Return to LaTeX with \\[reftex-index-phrases-save-and-return]"))))
1271
1272;;;###autoload
1273(defun reftex-index-visit-phrases-buffer ()
1274  "Switch to the phrases buffer, initialize if empty."
1275  (interactive)
1276  (reftex-access-scan-info)
1277  (set-marker reftex-index-return-marker (point))
1278  (let* ((master (reftex-TeX-master-file))
1279         (name (concat (file-name-sans-extension master)
1280                       reftex-index-phrase-file-extension)))
1281    (find-file name)
1282    (unless (eq major-mode 'reftex-index-phrases-mode)
1283      (reftex-index-phrases-mode))
1284    (if (= (buffer-size) 0)
1285        (reftex-index-initialize-phrases-buffer master))))
1286
1287(defun reftex-index-initialize-phrases-buffer (&optional master)
1288  "Initialize the phrases buffer by creating the header.
1289If the buffer is non-empty, delete the old header first."
1290  (interactive)
1291  (let* ((case-fold-search t)
1292         (default-key (car reftex-index-default-macro))
1293         (default-macro (nth 1 (assoc default-key
1294                                      reftex-key-to-index-macro-alist)))
1295         (macro-alist
1296          (sort (copy-sequence reftex-index-macro-alist)
1297                (lambda (a b) (equal (car a) default-macro))))
1298         macro entry key repeat)
1299
1300    (if master (set (make-local-variable 'TeX-master)
1301                    (file-name-nondirectory master)))
1302
1303    (when (> (buffer-size) 0)
1304      (goto-char 1)
1305      (set-mark (point))
1306      (while (re-search-forward reftex-index-phrases-macrodef-regexp nil t)
1307        (end-of-line))
1308      (beginning-of-line 2)
1309      (if (looking-at reftex-index-phrases-comment-regexp)
1310          (beginning-of-line 2))
1311      (while (looking-at "^[ \t]*$")
1312          (beginning-of-line 2))
1313      (if (featurep 'xemacs)
1314	  (zmacs-activate-region)
1315	(setq mark-active t))
1316      (if (yes-or-no-p "Delete and rebuild header? ")
1317          (delete-region (point-min) (point))))
1318
1319    ;; Insert the mode line
1320    (insert
1321     (format "%% -*- mode: reftex-index-phrases; TeX-master: \"%s\" -*-\n"
1322             (file-name-nondirectory (reftex-index-phrase-tex-master))))
1323    ;; Insert the macro definitions
1324    (insert "%                              Key      Macro Format            Repeat\n")
1325    (insert "%---------------------------------------------------------------------\n")
1326    (while (setq entry (pop macro-alist))
1327      (setq macro (car entry)
1328            repeat (nth 7 entry)
1329            key (car (delq nil (mapcar (lambda (x) (if (equal (nth 1 x) macro)
1330                                                       (car x)
1331                                                     nil))
1332                                       reftex-key-to-index-macro-alist))))
1333      (insert (format ">>>INDEX_MACRO_DEFINITION:\t%s\t%-20s\t%s\n"
1334                      (char-to-string key) (concat macro "{%s}")
1335                      (if repeat "t" "nil"))))
1336    (insert "%---------------------------------------------------------------------\n\n\n")))
1337
1338(defvar TeX-master)
1339(defun reftex-index-phrase-tex-master (&optional dir)
1340  "Return the name of the master file associated with a phrase buffer."
1341  (if (and (boundp 'TeX-master)
1342           (local-variable-p 'TeX-master (current-buffer))
1343           (stringp TeX-master))
1344      ;; We have a local variable which tells us which file to use
1345      (expand-file-name TeX-master dir)
1346    ;; have to guess
1347    (concat (file-name-sans-extension (buffer-file-name)) ".tex")))
1348
1349(defun reftex-index-phrases-save-and-return ()
1350  "Return to where the `reftex-index-phrase-selection-or-word' was called."
1351  (interactive)
1352  (save-buffer)
1353  (switch-to-buffer (marker-buffer reftex-index-return-marker))
1354  (goto-char (or (marker-position reftex-index-return-marker) (point))))
1355
1356
1357(defvar reftex-index-phrases-menu)
1358(defvar reftex-index-phrases-marker)
1359(defvar reftex-index-phrases-restrict-file nil)
1360;; NB this is a global autoload - see reftex.el.
1361;;;###autoload
1362(define-derived-mode reftex-index-phrases-mode fundamental-mode "Phrases"
1363  "Major mode for managing the Index phrases of a LaTeX document.
1364This buffer was created with RefTeX.
1365
1366To insert new phrases, use
1367 - `C-c \\' in the LaTeX document to copy selection or word
1368 - `\\[reftex-index-new-phrase]' in the phrases buffer.
1369
1370To index phrases use one of:
1371
1372\\[reftex-index-this-phrase]     index current phrase
1373\\[reftex-index-next-phrase]     index next phrase (or N with prefix arg)
1374\\[reftex-index-all-phrases]     index all phrases
1375\\[reftex-index-remaining-phrases]     index current and following phrases
1376\\[reftex-index-region-phrases]     index the phrases in the region
1377
1378You can sort the phrases in this buffer with \\[reftex-index-sort-phrases].
1379To display information about the phrase at point, use \\[reftex-index-phrases-info].
1380
1381For more information see the RefTeX User Manual.
1382
1383Here are all local bindings.
1384
1385\\{reftex-index-phrases-mode-map}"
1386  :syntax-table reftex-index-phrases-syntax-table
1387  (set (make-local-variable 'font-lock-defaults)
1388       reftex-index-phrases-font-lock-defaults)
1389  (easy-menu-add reftex-index-phrases-menu reftex-index-phrases-mode-map)
1390  (set (make-local-variable 'reftex-index-phrases-marker) (make-marker)))
1391;; (add-hook 'reftex-index-phrases-mode-hook 'turn-on-font-lock)
1392
1393;; Font Locking stuff
1394(let ((ss (if (featurep 'xemacs) 'secondary-selection ''secondary-selection)))
1395  (setq reftex-index-phrases-font-lock-keywords
1396        (list
1397         (cons reftex-index-phrases-comment-regexp 'font-lock-comment-face)
1398         (list reftex-index-phrases-macrodef-regexp
1399               '(1 font-lock-type-face)
1400               '(2 font-lock-keyword-face)
1401               (list 3 ss)
1402               '(4 font-lock-function-name-face)
1403               (list 5 ss)
1404               '(6 font-lock-string-face))
1405         (list reftex-index-phrases-phrase-regexp1
1406               '(1 font-lock-keyword-face)
1407               (list 2 ss)
1408               '(3 font-lock-string-face)
1409               (list 4 ss))
1410         (list reftex-index-phrases-phrase-regexp2
1411               '(1 font-lock-keyword-face)
1412               (list 2 ss)
1413               '(3 font-lock-string-face)
1414               (list 4 ss)
1415               '(5 font-lock-function-name-face))
1416         (cons "^\t$" ss)))
1417  (setq reftex-index-phrases-font-lock-defaults
1418        '((reftex-index-phrases-font-lock-keywords)
1419          nil t nil beginning-of-line))
1420  (put 'reftex-index-phrases-mode 'font-lock-defaults
1421       reftex-index-phrases-font-lock-defaults) ; XEmacs
1422  )
1423
1424(defun reftex-index-next-phrase (&optional arg)
1425  "Index the next ARG phrases in the phrases buffer."
1426  (interactive "p")
1427  (reftex-index-phrases-parse-header t)
1428  (while (> arg 0)
1429    (cl-decf arg)
1430    (end-of-line)
1431    (if (re-search-forward reftex-index-phrases-phrase-regexp12 nil t)
1432        (progn
1433          (goto-char (match-beginning 0))
1434          (reftex-index-this-phrase 'slave))
1435      (error "No more phrase lines after point"))))
1436
1437(defun reftex-index-this-phrase (&optional slave)
1438  "Index the phrase in the current line.
1439Does a global search and replace in the entire document.  At each
1440match, the user will be asked to confirm the replacement."
1441  (interactive)
1442  (if (not slave) (reftex-index-phrases-parse-header t))
1443  (save-excursion
1444    (beginning-of-line)
1445    (cond ((looking-at reftex-index-phrases-comment-regexp)
1446           (if (not slave) (error "Comment line")))
1447          ((looking-at "^[ \t]*$")
1448           (if (not slave) (error "Empty line")))
1449          ((looking-at reftex-index-phrases-macrodef-regexp)
1450           (if (not slave) (error "Macro definition line")))
1451          ((looking-at reftex-index-phrases-phrase-regexp12)
1452           ;; This is a phrase
1453           (let* ((char (if (not (equal (match-string 1) ""))
1454                            (string-to-char (match-string 1))))
1455                  (phrase (match-string 3))
1456                  (index-key (match-string 6))
1457                  (macro-data (cdr (if (null char)
1458                                       (car reftex-index-phrases-macro-data)
1459                                     (assoc char reftex-index-phrases-macro-data))))
1460                  (macro-fmt (car macro-data))
1461                  (repeat (nth 1 macro-data))
1462                  (files
1463                   (cond ((and (stringp reftex-index-phrases-restrict-file)
1464                               (file-regular-p reftex-index-phrases-restrict-file))
1465                          (list reftex-index-phrases-restrict-file))
1466                         ((stringp reftex-index-phrases-restrict-file)
1467                          (error "Invalid restriction file %s"
1468                                 reftex-index-phrases-restrict-file))
1469                         (t reftex-index-phrases-files)))
1470                  (as-words reftex-index-phrases-search-whole-words))
1471             (unless macro-data
1472               (error "No macro associated with key %c" char))
1473             (unwind-protect
1474                 (let ((overlay-arrow-string "=>")
1475                       (overlay-arrow-position
1476                        reftex-index-phrases-marker)
1477                       (replace-count 0))
1478                   ;; Show the overlay arrow
1479                   (move-marker reftex-index-phrases-marker
1480                                (match-beginning 0) (current-buffer))
1481                   ;; Start the query-replace
1482                   (reftex-query-index-phrase-globally
1483                    files phrase macro-fmt
1484                    index-key repeat as-words)
1485                   (message "%s replaced"
1486                            (reftex-number replace-count "occurrence"))))))
1487          (t (error "Cannot parse this line")))))
1488
1489(defun reftex-index-all-phrases ()
1490  "Index all phrases in the phrases buffer.
1491Calls `reftex-index-this-phrase' on each line in the buffer."
1492  (interactive)
1493  (reftex-index-region-phrases (point-min) (point-max)))
1494
1495(defun reftex-index-remaining-phrases ()
1496  "Index all phrases in the phrases buffer.
1497Calls `reftex-index-this-phrase' on each line ay and below point in
1498the buffer."
1499  (interactive)
1500  (beginning-of-line)
1501  (reftex-index-region-phrases (point) (point-max)))
1502
1503(defun reftex-index-region-phrases (beg end)
1504  "Index all phrases in the phrases buffer.
1505Calls `reftex-index-this-phrase' on each line in the region."
1506  (interactive "r")
1507  (reftex-index-phrases-parse-header t)
1508  (goto-char beg)
1509  (while (not (or (eobp)
1510                  (>= (point) end)))
1511    (save-excursion (reftex-index-this-phrase 'slave))
1512    (beginning-of-line 2)))
1513
1514(defun reftex-index-phrases-parse-header (&optional get-files)
1515  "Parse the header of a phrases file to extract the macro definitions.
1516The definitions get stored in `reftex-index-phrases-macro-data'.
1517Also switches to the LaTeX document to find out which files belong to
1518the document and stores the list in `reftex-index-phrases-files'."
1519  (let* ((master (reftex-index-phrase-tex-master))
1520         buf)
1521    (if get-files
1522        ;; Get the file list
1523        (save-excursion
1524          (setq buf (reftex-get-file-buffer-force master))
1525          (unless buf (error "Master file %s not found" master))
1526          (set-buffer buf)
1527          (reftex-access-scan-info)
1528          (setq reftex-index-phrases-files
1529                (reftex-all-document-files))))
1530    ;; Parse the files header for macro definitions
1531    (setq reftex-index-phrases-macro-data nil)
1532    (save-excursion
1533      (goto-char (point-min))
1534      (while (re-search-forward reftex-index-phrases-macrodef-regexp nil t)
1535        (push (list
1536               (string-to-char (match-string 2))
1537               (match-string 4)
1538               (equal (match-string 6) "t"))
1539              reftex-index-phrases-macro-data))
1540      ;; Reverse the list, so that the first macro is first
1541      (if (null reftex-index-phrases-macro-data)
1542          (error "No valid MACRO DEFINITION line in %s file (make sure to use TAB separators)" reftex-index-phrase-file-extension))
1543      (setq reftex-index-phrases-macro-data
1544            (nreverse reftex-index-phrases-macro-data))
1545      (goto-char (point-min)))))
1546
1547(defun reftex-index-phrases-apply-to-region (beg end)
1548  "Index all index phrases in the current region.
1549This works exactly like global indexing from the index phrases buffer,
1550but operation is restricted to the current region.  This is useful if
1551you need to add/change text in an already indexed document and want to
1552index the new part without having to go over the unchanged parts again."
1553  (interactive "r")
1554  (let ((win-conf (current-window-configuration))
1555        (reftex-index-phrases-restrict-file (buffer-file-name)))
1556  (save-excursion
1557    (save-restriction
1558      (narrow-to-region beg end)
1559      (unwind-protect
1560          (progn
1561            ;; Hide the region highlighting
1562            (if (featurep 'xemacs)
1563		(zmacs-deactivate-region)
1564	      (deactivate-mark))
1565            (delete-other-windows)
1566            (reftex-index-visit-phrases-buffer)
1567            (reftex-index-all-phrases))
1568        (set-window-configuration win-conf))))))
1569
1570(defun reftex-index-new-phrase (&optional text)
1571  "Open a new line in the phrases buffer, insert TEXT."
1572  (interactive)
1573  (if (and text (stringp text))
1574      (progn
1575        ;; Check if the phrase is already in the buffer
1576        (setq text (reftex-index-simplify-phrase text))
1577        (goto-char (point-min))
1578        (if (re-search-forward
1579             (concat "^\\(\\S-*\\)\t\\(" (regexp-quote text)
1580                     "\\) *[\t\n]") nil t)
1581            (progn
1582              (goto-char (match-end 2))
1583              (error "Phrase is already in phrases buffer")))))
1584  ;; Add the new phrase line after the last in the buffer
1585  (goto-char (point-max))
1586  (if (re-search-backward reftex-index-phrases-phrase-regexp12 nil t)
1587      (end-of-line))
1588  (if (not (bolp))
1589      (insert "\n"))
1590  (insert "\t")
1591  (if (and text (stringp text))
1592      (insert text)))
1593
1594(defun reftex-index-find-next-conflict-phrase (&optional arg)
1595  "Find the next a phrase which is has conflicts in the phrase buffer.
1596The command helps to find possible conflicts in the phrase indexing process.
1597It searches downward from point for a phrase which is repeated elsewhere
1598in the buffer, or which is a subphrase of another phrase.  If such a
1599phrase is found, the phrase info is displayed.
1600To check the whole buffer, start at the beginning and continue by calling
1601this function repeatedly."
1602  (interactive "P")
1603  (if (catch 'exit
1604        (while (re-search-forward reftex-index-phrases-phrase-regexp12 nil t)
1605          (goto-char (match-beginning 3))
1606          (let* ((phrase (match-string 3))
1607                 (case-fold-search reftex-index-phrases-case-fold-search)
1608                 (re (reftex-index-phrases-find-dup-re phrase t)))
1609            (if (save-excursion
1610                  (goto-char (point-min))
1611                  (and (re-search-forward re nil t)
1612                       (re-search-forward re nil t)))
1613                (throw 'exit t)))))
1614      (progn
1615        (reftex-index-phrases-info)
1616        (message "Phrase with match conflict discovered"))
1617    (goto-char (point-max))
1618    (error "No further problematic phrases found")))
1619
1620(defun reftex-index-phrases-info ()
1621  "Display information about the phrase at point."
1622  (interactive)
1623  (save-excursion
1624    (beginning-of-line)
1625    (unless (looking-at reftex-index-phrases-phrase-regexp12)
1626      (error "Not a phrase line"))
1627    (save-match-data (reftex-index-phrases-parse-header t))
1628    (let* ((char (if (not (equal (match-string 1) ""))
1629                     (string-to-char (match-string 1))))
1630           (phrase (match-string 3))
1631           (index-key (match-string 6))
1632           (index-keys (split-string
1633                        (or index-key phrase)
1634                        reftex-index-phrases-logical-or-regexp))
1635           (macro-data (cdr (if (null char)
1636                                (car reftex-index-phrases-macro-data)
1637                              (assoc char reftex-index-phrases-macro-data))))
1638           (macro-fmt (car macro-data))
1639           (repeat (nth 1 macro-data))
1640           (as-words reftex-index-phrases-search-whole-words)
1641           (example (reftex-index-make-replace-string
1642                     macro-fmt (downcase phrase) (car index-keys) repeat))
1643           (re (reftex-index-make-phrase-regexp phrase as-words t))
1644           (re1 (reftex-index-phrases-find-dup-re phrase))
1645           (re2 (reftex-index-phrases-find-dup-re phrase 'sub))
1646           superphrases
1647           (nmatches 0)
1648           (ntimes1 0)
1649           (ntimes2 0)
1650           (case-fold-search reftex-index-phrases-case-fold-search)
1651           file files buf)
1652      (setq files reftex-index-phrases-files)
1653      (save-excursion
1654        (save-restriction
1655          (widen)
1656          (goto-char (point-min))
1657          (while (re-search-forward re1 nil t)
1658            (cl-incf ntimes1))
1659          (goto-char (point-min))
1660          (while (re-search-forward re2 nil t)
1661            (push (cons (count-lines 1 (point)) (match-string 1)) superphrases)
1662            (cl-incf ntimes2))))
1663      (save-current-buffer
1664        (while (setq file (pop files))
1665          (setq buf (reftex-get-file-buffer-force file))
1666          (when buf
1667            (set-buffer buf)
1668            (save-excursion
1669              (save-restriction
1670                (widen)
1671                (goto-char (point-min))
1672                (let ((case-fold-search reftex-index-phrases-case-fold-search))
1673                  (while (re-search-forward re nil t)
1674                    (or (reftex-in-comment)
1675                        (cl-incf nmatches)))))))))
1676      (with-output-to-temp-buffer "*Help*"
1677        (princ (format "       Phrase:  %s\n" phrase))
1678        (princ (format "    Macro key:  %s\n" char))
1679        (princ (format " Macro format:  %s\n" macro-fmt))
1680        (princ (format "       Repeat:  %s\n" repeat))
1681        (cond
1682         (index-key
1683          (let ((iks index-keys) (cnt 0) ik)
1684            (while (setq ik (pop iks))
1685              (princ (format "Index entry %d:  %s\n" (cl-incf cnt) ik)))))
1686         (repeat
1687          (princ (format "  Index entry:  %s\n" phrase)))
1688         (t
1689          (princ (format "    Index key:  <<Given by the match>>\n"))))
1690        (princ (format "      Example:  %s\n" example))
1691        (terpri)
1692        (princ (format "Total matches:  %s in %s\n"
1693                       (reftex-number nmatches "match" "es")
1694                       (reftex-number (length reftex-index-phrases-files)
1695                                      "LaTeX file")))
1696        (princ (format "   Uniqueness:  Phrase occurs %s in phrase buffer\n"
1697                       (reftex-number ntimes1 "time")))
1698        (if (> ntimes2 1)
1699            (progn
1700              (princ (format " Superphrases:  Phrase matches the following %s in the phrase buffer:\n"
1701                             (reftex-number ntimes2 "line")))
1702              (mapcar (lambda(x)
1703                        (princ (format "                Line %4d:  %s\n" (car x) (cdr x))))
1704                      (nreverse superphrases))))))))
1705
1706(defun reftex-index-phrases-set-macro-key ()
1707  "Change the macro key for the current line.
1708Prompts for a macro key and insert is at the beginning of the line.
1709If you reply with SPACE, the macro keyn will be removed, so that the
1710default macro will be used.  If you reply with `RET', just prints
1711information about the currently selected macro."
1712  (interactive)
1713  (reftex-index-phrases-parse-header)
1714  (save-excursion
1715    (beginning-of-line)
1716    (unless (or (looking-at reftex-index-phrases-phrase-regexp12)
1717                (looking-at "\t"))
1718      (error "This is not a phrase line"))
1719    (let* ((nc (reftex-index-select-phrases-macro 0))
1720           (macro-data (assoc nc reftex-index-phrases-macro-data))
1721           macro-fmt repeat)
1722      (cond (macro-data)
1723            ((equal nc ?\ )
1724             (setq nc ""
1725                   macro-data (car reftex-index-phrases-macro-data)))
1726            ((equal nc ?\C-m)
1727             (setq nc (char-after (point)))
1728             (if (equal nc ?\t)
1729                 (setq nc ""
1730                       macro-data (car reftex-index-phrases-macro-data))
1731               (setq macro-data (assoc nc reftex-index-phrases-macro-data))))
1732            (t (error "No macro associated with %c" nc)))
1733
1734      (setq macro-fmt (nth 1 macro-data)
1735            repeat (nth 2 macro-data))
1736      (if macro-data
1737          (progn
1738            (if (looking-at "[^\t]") (delete-char 1))
1739            (insert nc)
1740            (message "Line will use %s %s repeat" macro-fmt
1741                     (if repeat "with" "without")))
1742        (error "Abort")))))
1743
1744(defun reftex-index-sort-phrases (&optional chars-first)
1745  "Sort the phrases lines in the buffer alphabetically.
1746Normally, this looks only at the phrases.  With a prefix arg CHARS-FIRST,
1747it first compares the macro identifying chars and then the phrases."
1748  (interactive "P")
1749  ;; Remember the current line, so that we can return
1750  (let ((line (buffer-substring (progn (beginning-of-line) (point))
1751                                (progn (end-of-line) (point))))
1752        beg end)
1753    (goto-char (point-min))
1754    ;; Find first and last phrase line in buffer
1755    (setq beg
1756          (and (re-search-forward reftex-index-phrases-phrase-regexp12 nil t)
1757               (match-beginning 0)))
1758    (goto-char (point-max))
1759    (setq end (re-search-backward reftex-index-phrases-phrase-regexp12 nil t))
1760    (if end (setq end (progn (goto-char end) (end-of-line) (point))))
1761    ;; Take the lines, sort them and re-insert.
1762    (if (and beg end)
1763        (progn
1764          (message "Sorting lines...")
1765          (let* ((lines (split-string (buffer-substring beg end) "\n"))
1766                 (lines1 (sort lines 'reftex-compare-phrase-lines)))
1767            (message "Sorting lines...done")
1768            (let ((inhibit-quit t))  ;; make sure we do not lose lines
1769              (delete-region beg end)
1770              (insert (mapconcat 'identity lines1 "\n"))))
1771          (goto-char (point-max))
1772          (re-search-backward (concat "^" (regexp-quote line) "$") nil t))
1773      (error "Cannot find phrases lines to sort"))))
1774
1775(defvar chars-first)
1776(defun reftex-compare-phrase-lines (a b)
1777  "The comparison function used for sorting."
1778  (let (ca cb pa pb c-p p-p)
1779    (if (string-match reftex-index-phrases-phrase-regexp12 a)
1780        (progn
1781          ;; Extract macro char and phrase-or-key for a
1782          (setq ca (match-string 1 a)
1783                pa (downcase
1784                    (or (and reftex-index-phrases-sort-prefers-entry
1785                             (match-string 6 a))
1786                        (match-string 3 a))))
1787          (if (string-match reftex-index-phrases-phrase-regexp12 b)
1788              (progn
1789                ;; Extract macro char and phrase-or-key for b
1790                (setq cb (match-string 1 b)
1791                      pb (downcase
1792                          (or (and reftex-index-phrases-sort-prefers-entry
1793                                   (match-string 6 b))
1794                              (match-string 3 b))))
1795                (setq c-p (string< ca cb)
1796                      p-p (string< pa pb))
1797                ;; Do the right comparison, based on the value of `chars-first'
1798                ;; `chars-first' is bound locally in the calling function
1799                (if chars-first
1800                    (if (string= ca cb) p-p c-p)
1801                  (if (string= pa pb) c-p p-p)))))
1802      ;; If line a does not match, the answer we return determines
1803      ;; if non-matching lines are collected at the beginning.
1804      ;; When we return t here, non-matching lines form
1805      ;; block separators for searches.
1806      (not reftex-index-phrases-sort-in-blocks))))
1807
1808(defvar reftex-index-phrases-menu)
1809(defun reftex-index-make-phrase-regexp (phrase &optional
1810                                               as-words allow-newline)
1811  "Return a regexp matching PHRASE, even if distributed over lines.
1812With optional arg AS-WORDS, require word boundary at beginning and end.
1813With optional arg ALLOW-NEWLINE, allow single newline between words."
1814  (let* ((words (split-string phrase))
1815         (space-re (if allow-newline
1816                       "\\([ \t]*\\(\n[ \t]*\\)?\\|[ \t]\\)"
1817                     "\\([ \t]+\\)")))
1818    (concat (if (and as-words (string-match "\\`\\w" (car words)))
1819                "\\(\\<\\|[`']\\)" "")
1820            (mapconcat (lambda (w) (regexp-quote
1821                                    (if reftex-index-phrases-case-fold-search
1822                                        (downcase w)
1823                                      w)))
1824                       words space-re)
1825            (if (and as-words
1826                     (string-match "\\w\\'" (nth (1- (length words)) words)))
1827                "\\(\\>\\|'\\)" ""))))
1828
1829(defun reftex-index-simplify-phrase (phrase)
1830  "Make phrase single spaces and single line."
1831  (mapconcat 'identity (split-string phrase) " "))
1832
1833(defun reftex-index-phrases-find-dup-re (phrase &optional sub)
1834  "Return a regexp which matches variations of PHRASE (with additional space).
1835When SUB ins non-nil, the regexp will also match when PHRASE is a subphrase
1836of another phrase.  The regexp works lonly in the phrase buffer."
1837  (concat (if sub "^\\S-?\t\\([^\t\n]*" "^\\S-?\t")
1838          (mapconcat 'regexp-quote (split-string phrase) " +")
1839          (if sub "[^\t\n]*\\)\\([\t\n]\\|$\\)" " *\\([\t\n]\\|$\\)")))
1840
1841(defun reftex-index-make-replace-string (macro-fmt match index-key
1842                                                   &optional repeat mathp)
1843  "Return the string which can be used as replacement.
1844Treats the logical `and' for index phrases."
1845  (let ((index-keys (split-string (or index-key match)
1846                                  reftex-index-phrases-logical-and-regexp)))
1847    (concat
1848     (mapconcat (lambda (x)
1849                  (format macro-fmt
1850                          (format (if mathp reftex-index-math-format "%s") x)))
1851                index-keys "")
1852   (if repeat (reftex-index-simplify-phrase match) ""))))
1853
1854(defun reftex-query-index-phrase-globally (files &rest args)
1855  "Call `reftex-query-index-phrase' for all files in FILES."
1856  (let ((win-conf (current-window-configuration))
1857        (file))
1858    (unless files (error "No files"))
1859    (unwind-protect
1860        (progn
1861          (switch-to-buffer-other-window (reftex-get-file-buffer-force
1862                                          (car files)))
1863          (catch 'no-more-files
1864            (while (setq file (pop files))
1865              (switch-to-buffer (reftex-get-file-buffer-force file))
1866              (save-excursion
1867                (save-restriction
1868                  (unless (stringp reftex-index-phrases-restrict-file)
1869                    (widen))
1870                  (goto-char (point-min))
1871                  (apply 'reftex-query-index-phrase args))))))
1872      (reftex-unhighlight 0)
1873      (set-window-configuration win-conf))))
1874
1875(defconst reftex-index-phrases-help
1876  "     Keys for query-index search
1877     ===========================
1878y       Replace this match
1879n       Skip this match
1880!       Replace this and all further matches in this file
1881q / Q   Skip match, start next file / start next phrase
1882o       Use a different indexing macro for this match
18831 - 9   Select one of the multiple phrases
1884e       Edit the replacement text
1885C-r     Recursive edit.
1886s / S   Save this buffer  /  Save all document buffers
1887C-g     Abort"
1888  "The help string for indexing phrases.")
1889
1890(defvar replace-count)
1891(defun reftex-query-index-phrase (phrase macro-fmt &optional
1892                                         index-key repeat as-words)
1893  "Search through buffer for PHRASE, and offer to replace it with an indexed
1894version.  The index version is derived by applying `format' with MACRO-FMT
1895to INDEX-KEY or PHRASE.  When REPEAT is non-nil, the PHRASE is inserted
1896again after the macro.
1897AS-WORDS means, the search for PHRASE should require word boundaries at
1898both ends."
1899  (let* ((re (reftex-index-make-phrase-regexp phrase as-words 'allow-newline))
1900         (case-fold-search reftex-index-phrases-case-fold-search)
1901         (index-keys (split-string
1902                      (or index-key phrase)
1903                      reftex-index-phrases-logical-or-regexp))
1904         (nkeys (length index-keys))
1905         (ckey (nth 0 index-keys))
1906         (all-yes nil)
1907         match rpl char (beg (make-marker)) (end (make-marker)) mathp)
1908    (move-marker beg 1)
1909    (move-marker end 1)
1910    (unwind-protect
1911        (while (re-search-forward re nil t)
1912          (catch 'next-match
1913            (if (reftex-in-comment)
1914                (throw 'next-match nil))
1915            (if (and (fboundp reftex-index-verify-function)
1916                     (not (funcall reftex-index-verify-function)))
1917                (throw 'next-match nil))
1918            (setq match (match-string 0))
1919            (setq mathp
1920                  (save-match-data
1921                    (condition-case nil (texmathp) (error nil))))
1922            (setq beg (move-marker beg (match-beginning 0))
1923                  end (move-marker end (match-end 0)))
1924            (if (and reftex-index-phrases-skip-indexed-matches
1925                     (save-match-data
1926                       (reftex-index-phrase-match-is-indexed beg
1927                                                             end)))
1928                (throw 'next-match nil))
1929            (reftex-highlight 0 (match-beginning 0) (match-end 0))
1930            (setq rpl
1931                  (save-match-data
1932                    (reftex-index-make-replace-string
1933                     macro-fmt (match-string 0) ckey repeat mathp)))
1934            (while
1935                (not
1936                 (catch 'loop
1937                   (message "REPLACE: %s?   (yn!qoe%s?)"
1938                            rpl
1939                            (if (> nkeys 1)
1940                                (concat "1-" (int-to-string nkeys))
1941                              ""))
1942                   (setq char (if all-yes ?y (read-char-exclusive)))
1943                   (cond ((member char '(?y ?Y ?\ ))
1944                          ;; Yes!
1945                          (replace-match rpl t t)
1946                          (cl-incf replace-count)
1947                          ;; See if we should insert newlines to shorten lines
1948                          (and reftex-index-phrases-wrap-long-lines
1949                               (reftex-index-phrases-fixup-line beg end))
1950                          (throw 'loop t))
1951                         ((member char '(?n ?N ?\C-h ?\C-?));; FIXME: DEL
1952                          ;; No
1953                          (throw 'loop t))
1954                         ((equal char ?!)
1955                          ;; Yes for all in this buffer
1956                          (setq all-yes t))
1957                         ((equal char ?q)
1958                          ;; Stop this one in this file
1959                          (goto-char (point-max))
1960                          (throw 'loop t))
1961                         ((equal char ?Q)
1962                          ;; Stop this one
1963                          (throw 'no-more-files t))
1964                         ((equal char ?s)
1965                          (save-buffer))
1966                         ((equal char ?S)
1967                          (reftex-save-all-document-buffers))
1968                         ((equal char ?\C-g)
1969                          (keyboard-quit))
1970                         ((member char '(?o ?O))
1971                          ;; Select a different macro
1972                          (let* ((nc (reftex-index-select-phrases-macro 2))
1973                                 (macro-data
1974                                  (cdr (assoc nc reftex-index-phrases-macro-data)))
1975                                 (macro-fmt (car macro-data))
1976                                 (repeat (nth 1 macro-data)))
1977                            (if macro-data
1978                                (setq rpl (save-match-data
1979                                            (reftex-index-make-replace-string
1980                                             macro-fmt match
1981                                             ckey repeat mathp)))
1982                              (ding))))
1983                         ((equal char ?\?)
1984                          ;; Help
1985                          (with-output-to-temp-buffer "*Help*"
1986                            (princ reftex-index-phrases-help)))
1987                         ((equal char ?\C-r)
1988                          ;; Recursive edit
1989                          (save-match-data
1990                            (save-excursion
1991                              (message "%s"
1992                               (substitute-command-keys
1993                                "Recursive edit.  Resume with \\[exit-recursive-edit]"))
1994                              (recursive-edit))))
1995                         ((equal char ?e)
1996                          (setq rpl (read-string "Edit: " rpl)))
1997                         ((equal char ?0)
1998                          (setq ckey (or index-key phrase)
1999                                rpl (save-match-data
2000                                      (reftex-index-make-replace-string
2001                                       macro-fmt match ckey repeat mathp))))
2002                         ((and (> char ?0)
2003                               (<= char (+ ?0 nkeys)))
2004                          (setq ckey (nth (1- (- char ?0)) index-keys)
2005                                rpl (save-match-data
2006                                      (reftex-index-make-replace-string
2007                                       macro-fmt match ckey repeat mathp))))
2008                         (t (ding)))
2009                   nil)))))
2010      (message "")
2011      (move-marker beg nil)
2012      (move-marker end nil)
2013      (setq all-yes nil)
2014      (reftex-unhighlight 0))))
2015
2016(defun reftex-index-phrase-match-is-indexed (beg end)
2017  ;; Check if match is in an argument of an index macro, or if an
2018  ;; index macro is directly attached to the match.
2019  (save-excursion
2020    (goto-char end)
2021    (let* ((all-macros (reftex-what-macro t))
2022;           (this-macro (car (car all-macros)))
2023           (before-macro
2024            (and (> beg 2)
2025                 (goto-char (1- beg))
2026                 (memq (char-after (point)) '(?\] ?\}))
2027                 (car (reftex-what-macro 1))))
2028           (after-macro
2029            (and (goto-char end)
2030                 (looking-at "\\(\\\\[a-zA-Z]+\\*?\\)[[{]")
2031                 (match-string 1)))
2032           macro)
2033      (or (catch 'matched
2034            (while (setq macro (pop all-macros))
2035              (if (member (car macro) reftex-macros-with-index)
2036                  (throw 'matched t)))
2037            nil)
2038          (and before-macro
2039               (member before-macro reftex-macros-with-index))
2040          (and after-macro
2041               (member after-macro reftex-macros-with-index))))))
2042
2043(defun reftex-index-phrases-fixup-line (beg end)
2044  "Insert newlines before BEG and/or after END to shorten line."
2045  (let (bol eol space1 space2)
2046    (save-excursion
2047      ;; Find line boundaries and possible line breaks near BEG and END
2048      (beginning-of-line)
2049      (setq bol (point))
2050      (end-of-line)
2051      (setq eol (point))
2052      (goto-char beg)
2053      (skip-chars-backward "^ \n")
2054      (if (and (equal (preceding-char) ?\ )
2055               (string-match "\\S-" (buffer-substring bol (point))))
2056          (setq space1 (1- (point))))
2057      (goto-char end)
2058      (skip-chars-forward "^ \n")
2059      (if (and (equal (following-char) ?\ )
2060               (string-match "\\S-" (buffer-substring (point) eol)))
2061          (setq space2 (point)))
2062      ;; Now check what we have and insert the newlines
2063      (if (<= (- eol bol) fill-column)
2064          ;; Line is already short
2065          nil
2066        (cond
2067         ((and (not space1) (not space2))) ; No spaces available
2068         ((not space2)                  ; Do space1
2069          (reftex-index-phrases-replace-space space1))
2070         ((not space1)                  ; Do space2
2071          (reftex-index-phrases-replace-space space2))
2072         (t ; We have both spaces
2073          (let ((l1 (- space1 bol))
2074                (l2 (- space2 space1))
2075                (l3 (- eol space2)))
2076            (if (> l2 fill-column)
2077                ;; The central part alone is more than one line
2078                (progn
2079                  (reftex-index-phrases-replace-space space1)
2080                  (reftex-index-phrases-replace-space space2))
2081              (if (> (+ l1 l2) fill-column)
2082                  ;; Need to split beginning
2083                  (reftex-index-phrases-replace-space space1))
2084              (if (> (+ l2 l3) fill-column)
2085                  ;; Need to split end
2086                  (reftex-index-phrases-replace-space space2))))))))))
2087
2088(defun reftex-index-phrases-replace-space (pos)
2089  "If there is a space at POS, replace it with a newline char.
2090Does not do a save-excursion."
2091  (when (equal (char-after pos) ?\ )
2092    (goto-char pos)
2093    (delete-char 1)
2094    (insert "\n")))
2095
2096(defun reftex-index-select-phrases-macro (&optional delay)
2097  "Offer a list of possible index macros and have the user select one."
2098  (let* ((prompt (concat "Select macro: ["
2099                         (mapconcat (lambda (x) (char-to-string (car x)))
2100                                    reftex-index-phrases-macro-data "")
2101                         "] "))
2102         (help (concat "Select an indexing macro\n========================\n"
2103                       (mapconcat (lambda (x)
2104                                    (format " [%c]     %s"
2105                                            (car x) (nth 1 x)))
2106                                  reftex-index-phrases-macro-data "\n"))))
2107    (reftex-select-with-char prompt help delay)))
2108
2109(provide 'reftex-index)
2110
2111;;; reftex-index.el ends here
2112
2113;; Local Variables:
2114;; generated-autoload-file: "reftex-loaddefs.el"
2115;; End:
2116