1;;; texinfo.el --- major mode for editing Texinfo files -*- coding: iso-2022-7bit -*-
2
3;; Copyright (C) 1985, 1988, 1989, 1990, 1991, 1992, 1993, 1996, 1997,
4;;   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5
6;; Author: Robert J. Chassell
7;; Date:   [See date below for texinfo-version]
8;; Maintainer: FSF
9;; Keywords: maint, tex, docs
10
11;; This file is part of GNU Emacs.
12
13;; GNU Emacs is free software; you can redistribute it and/or modify
14;; it under the terms of the GNU General Public License as published by
15;; the Free Software Foundation; either version 2, or (at your option)
16;; any later version.
17
18;; GNU Emacs is distributed in the hope that it will be useful,
19;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21;; GNU General Public License for more details.
22
23;; You should have received a copy of the GNU General Public License
24;; along with GNU Emacs; see the file COPYING.  If not, write to the
25;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26;; Boston, MA 02110-1301, USA.
27
28;;; Todo:
29
30;; - facemenu support.
31;; - command completion.
32
33;;; Commentary:
34
35;;; Code:
36
37(or (fboundp 'defgroup)
38    (defmacro defgroup (&rest ignore) nil))
39
40(or (fboundp 'defcustom)
41    (defmacro defcustom (var value doc &rest ignore)
42      `(defvar ,var ,value ,doc)))
43
44(eval-when-compile (require 'tex-mode) (require 'cl))
45(defvar outline-heading-alist)
46
47(defgroup texinfo nil
48  "Texinfo Mode."
49  :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
50  :group 'docs)
51
52;;;###autoload
53(defcustom texinfo-open-quote "``"
54  "*String inserted by typing \\[texinfo-insert-quote] to open a quotation."
55  :type 'string
56  :group 'texinfo)
57
58;;;###autoload
59(defcustom texinfo-close-quote "''"
60  "*String inserted by typing \\[texinfo-insert-quote] to close a quotation."
61  :type 'string
62  :group 'texinfo)
63
64(defcustom texinfo-mode-hook nil
65  "Normal hook run when entering Texinfo mode."
66  :type 'hook
67  :options '(turn-on-auto-fill flyspell-mode)
68  :group 'texinfo)
69
70
71;;; Autoloads:
72
73(autoload 'makeinfo-region
74  "makeinfo"
75  "Make Info file from region of current Texinfo file, and switch to it.
76
77This command does not offer the `next-error' feature since it would
78apply to a temporary file, not the original; use the `makeinfo-buffer'
79command to gain use of `next-error'."
80  t nil)
81
82(autoload 'makeinfo-buffer
83  "makeinfo"
84  "Make Info file from current buffer.
85
86Use the \\[next-error] command to move to the next error
87\(if there are errors\)."
88  t nil)
89
90(autoload 'kill-compilation
91  "compile"
92  "Kill the process made by the \\[compile] command."
93  t nil)
94
95(autoload 'makeinfo-recenter-compilation-buffer
96  "makeinfo"
97  "Redisplay `*compilation*' buffer so most recent output can be seen.
98The last line of the buffer is displayed on
99line LINE of the window, or centered if LINE is nil."
100  t nil)
101
102(autoload 'texinfo-update-node
103  "texnfo-upd"
104  "Without any prefix argument, update the node in which point is located.
105Non-nil argument (prefix, if interactive) means update the nodes in the
106marked region.
107
108The functions for creating or updating nodes and menus, and their
109keybindings, are:
110
111    `texinfo-update-node' (&optional region-p)    \\[texinfo-update-node]
112    `texinfo-every-node-update' ()                \\[texinfo-every-node-update]
113    `texinfo-sequential-node-update' (&optional region-p)
114
115    `texinfo-make-menu' (&optional region-p)      \\[texinfo-make-menu]
116    `texinfo-all-menus-update' ()                 \\[texinfo-all-menus-update]
117    `texinfo-master-menu' ()
118
119    `texinfo-indent-menu-description' (column &optional region-p)
120
121The `texinfo-column-for-description' variable specifies the column to
122which menu descriptions are indented. Its default value is 32."
123  t nil)
124
125(autoload 'texinfo-every-node-update
126  "texnfo-upd"
127  "Update every node in a Texinfo file."
128  t nil)
129
130(autoload 'texinfo-sequential-node-update
131  "texnfo-upd"
132  "Update one node (or many) in a Texinfo file with sequential pointers.
133
134This function causes the `Next' or `Previous' pointer to point to the
135immediately preceding or following node, even if it is at a higher or
136lower hierarchical level in the document.  Continually pressing `n' or
137`p' takes you straight through the file.
138
139Without any prefix argument, update the node in which point is located.
140Non-nil argument (prefix, if interactive) means update the nodes in the
141marked region.
142
143This command makes it awkward to navigate among sections and
144subsections; it should be used only for those documents that are meant
145to be read like a novel rather than a reference, and for which the
146Info `g*' command is inadequate."
147  t nil)
148
149(autoload 'texinfo-make-menu
150  "texnfo-upd"
151  "Without any prefix argument, make or update a menu.
152Make the menu for the section enclosing the node found following point.
153
154Non-nil argument (prefix, if interactive) means make or update menus
155for nodes within or part of the marked region.
156
157Whenever a menu exists, and is being updated, the descriptions that
158are associated with node names in the pre-existing menu are
159incorporated into the new menu.  Otherwise, the nodes' section titles
160are inserted as descriptions."
161  t nil)
162
163(autoload 'texinfo-all-menus-update
164  "texnfo-upd"
165  "Update every regular menu in a Texinfo file.
166Remove pre-existing master menu, if there is one.
167
168If called with a non-nil argument, this function first updates all the
169nodes in the buffer before updating the menus."
170  t nil)
171
172(autoload 'texinfo-master-menu
173  "texnfo-upd"
174  "Make a master menu for a whole Texinfo file.
175Non-nil argument (prefix, if interactive) means first update all
176existing nodes and menus.  Remove pre-existing master menu, if there is one.
177
178This function creates a master menu that follows the top node.  The
179master menu includes every entry from all the other menus.  It
180replaces any existing ordinary menu that follows the top node.
181
182If called with a non-nil argument, this function first updates all the
183menus in the buffer (incorporating descriptions from pre-existing
184menus) before it constructs the master menu.
185
186The function removes the detailed part of an already existing master
187menu.  This action depends on the pre-existing master menu using the
188standard `texinfo-master-menu-header'.
189
190The master menu has the following format, which is adapted from the
191recommendation in the Texinfo Manual:
192
193   * The first part contains the major nodes in the Texinfo file: the
194     nodes for the chapters, chapter-like sections, and the major
195     appendices.  This includes the indices, so long as they are in
196     chapter-like sections, such as unnumbered sections.
197
198   * The second and subsequent parts contain a listing of the other,
199     lower level menus, in order.  This way, an inquirer can go
200     directly to a particular node if he or she is searching for
201     specific information.
202
203Each of the menus in the detailed node listing is introduced by the
204title of the section containing the menu."
205  t nil)
206
207(autoload 'texinfo-indent-menu-description
208  "texnfo-upd"
209  "Indent every description in menu following point to COLUMN.
210Non-nil argument (prefix, if interactive) means indent every
211description in every menu in the region.  Does not indent second and
212subsequent lines of a multi-line description."
213  t nil)
214
215(autoload 'texinfo-insert-node-lines
216  "texnfo-upd"
217  "Insert missing `@node' lines in region of Texinfo file.
218Non-nil argument (prefix, if interactive) means also to insert the
219section titles as node names; and also to insert the section titles as
220node names in pre-existing @node lines that lack names."
221  t nil)
222
223(autoload 'texinfo-start-menu-description
224  "texnfo-upd"
225  "In this menu entry, insert the node's section title as a description.
226Position point at beginning of description ready for editing.
227Do not insert a title if the line contains an existing description.
228
229You will need to edit the inserted text since a useful description
230complements the node name rather than repeats it as a title does."
231  t nil)
232
233(autoload 'texinfo-multiple-files-update
234  "texnfo-upd"
235  "Update first node pointers in each file included in OUTER-FILE;
236create or update main menu in the outer file that refers to such nodes.
237This does not create or update menus or pointers within the included files.
238
239With optional MAKE-MASTER-MENU argument (prefix arg, if interactive),
240insert a master menu in OUTER-FILE.  This does not create or update
241menus or pointers within the included files.
242
243With optional UPDATE-EVERYTHING argument (numeric prefix arg, if
244interactive), update all the menus and all the `Next', `Previous', and
245`Up' pointers of all the files included in OUTER-FILE before inserting
246a master menu in OUTER-FILE.
247
248The command also updates the `Top' level node pointers of OUTER-FILE.
249
250Notes:
251
252  * this command does NOT save any files--you must save the
253    outer file and any modified, included files.
254
255  * except for the `Top' node, this command does NOT handle any
256    pre-existing nodes in the outer file; hence, indices must be
257    enclosed in an included file.
258
259Requirements:
260
261  * each of the included files must contain exactly one highest
262    hierarchical level node,
263  * this highest node must be the first node in the included file,
264  * each highest hierarchical level node must be of the same type.
265
266Thus, normally, each included file contains one, and only one,
267chapter."
268  t nil)
269
270
271;;; Code:
272
273;;; Don't you dare insert any `require' calls at top level in this file--rms.
274
275(defvar texinfo-section-list
276  '(("top" 1)
277    ("chapter" 2)
278    ("section" 3)
279    ("subsection" 4)
280    ("subsubsection" 5)
281    ("unnumbered" 2)
282    ("unnumberedsec" 3)
283    ("unnumberedsubsec" 4)
284    ("unnumberedsubsubsec" 5)
285    ("appendix" 2)
286    ("appendixsec" 3)
287    ("appendixsection" 3)
288    ("appendixsubsec" 4)
289    ("appendixsubsubsec" 5)
290    ("majorheading" 2)
291    ("chapheading" 2)
292    ("heading" 3)
293    ("subheading" 4)
294    ("subsubheading" 5))
295  "Alist of sectioning commands and their relative level.")
296
297;;; Syntax table
298
299(defvar texinfo-mode-syntax-table nil)
300
301(if texinfo-mode-syntax-table
302    nil
303  (setq texinfo-mode-syntax-table (make-syntax-table))
304  (modify-syntax-entry ?\" "." texinfo-mode-syntax-table)
305  (modify-syntax-entry ?\\ "." texinfo-mode-syntax-table)
306  (modify-syntax-entry ?@ "\\" texinfo-mode-syntax-table)
307  (modify-syntax-entry ?\^q "\\" texinfo-mode-syntax-table)
308  (modify-syntax-entry ?\[ "(]" texinfo-mode-syntax-table)
309  (modify-syntax-entry ?\] ")[" texinfo-mode-syntax-table)
310  (modify-syntax-entry ?{ "(}" texinfo-mode-syntax-table)
311  (modify-syntax-entry ?} "){" texinfo-mode-syntax-table)
312  (modify-syntax-entry ?\n ">" texinfo-mode-syntax-table)
313  (modify-syntax-entry ?\' "w" texinfo-mode-syntax-table))
314
315;; Written by Wolfgang Bangerth <zcg51122@rpool1.rus.uni-stuttgart.de>
316;; To override this example, set either `imenu-generic-expression'
317;; or `imenu-create-index-function'.
318(defvar texinfo-imenu-generic-expression
319  '((nil "^@\\(node\\|anchor\\)[ \t]+\\([^,\n]*\\)" 2)
320    ("Chapters" "^@chapter[ \t]+\\(.*\\)$" 1))
321  "Imenu generic expression for Texinfo mode.  See `imenu-generic-expression'.")
322
323(defvar texinfo-font-lock-syntactic-keywords
324  '(("\\(@\\)c\\(omment\\)?\\>" (1 "<"))
325    ("^\\(@\\)ignore\\>" (1 "< b"))
326    ("^@end ignore\\(\n\\)" (1 "> b")))
327  "Syntactic keywords to catch comment delimiters in `texinfo-mode'.")
328
329(defconst texinfo-environments
330  '("cartouche" "copying" "defcv" "deffn" "defivar" "defmac"
331    "defmethod" "defop" "defopt" "defspec" "deftp" "deftypefn"
332    "deftypefun" "deftypevar" "deftypevr" "defun" "defvar"
333    "defvr" "description" "detailmenu" "direntry" "display"
334    "documentdescription" "enumerate" "example" "flushleft"
335    "flushright" "format" "ftable" "group" "ifclear" "ifset"
336    "ifhtml" "ifinfo" "ifnothtml" "ifnotinfo" "ifnotplaintext"
337    "ifnottex" "ifplaintext" "iftex" "ignore" "itemize" "lisp"
338    "macro" "menu" "multitable" "quotation" "smalldisplay"
339    "smallexample" "smallformat" "smalllisp" "table" "tex"
340    "titlepage" "verbatim" "vtable")
341  "List of Texinfo environments.")
342
343(defconst texinfo-environment-regexp
344  (concat "^@" (regexp-opt (cons "end" texinfo-environments) t) "\\>")
345  "Regexp for environment-like Texinfo list commands.
346Subexpression 1 is what goes into the corresponding `@end' statement.")
347
348(defface texinfo-heading
349  '((t (:inherit font-lock-function-name-face)))
350  "Face used for section headings in `texinfo-mode'."
351  :group 'texinfo)
352;; backward-compatibility alias
353(put 'texinfo-heading-face 'face-alias 'texinfo-heading)
354(defvar texinfo-heading-face 'texinfo-heading)
355
356(defvar texinfo-font-lock-keywords
357  `(;; All but the first had an OVERRIDE of t.
358    ;; It didn't seem to be any better, and it's slower--simon.
359    ;; Robert J. Chassell <bob@gnu.org> says remove this line.
360    ;;("\\$\\([^$]*\\)\\$" 1 font-lock-string-face t)
361    ("@\\([a-zA-Z]+\\|[^ \t\n]\\)" 1 font-lock-keyword-face) ;commands
362    ("^\\*\\([^\n:]*\\)" 1 font-lock-function-name-face t) ;menu items
363    ("@\\(emph\\|i\\|sc\\){\\([^}]+\\)" 2 'italic)
364    ("@\\(strong\\|b\\){\\([^}]+\\)" 2 'bold)
365    ("@\\(kbd\\|key\\|url\\|uref\\){\\([^}]+\\)" 2 font-lock-string-face)
366    ;; The following two groups have an OVERRIDE of `keep' because
367    ;; their arguments frequently include a @@, and we don't want that
368    ;; to overwrite the normal fontification of the argument.
369    ("@\\(file\\|email\\){\\([^}]+\\)" 2 font-lock-string-face keep)
370    ("@\\(samp\\|code\\|var\\|math\\|env\\|command\\|option\\){\\([^}]+\\)"
371     2 font-lock-variable-name-face keep)
372    ("@\\(cite\\|x?ref\\|pxref\\|dfn\\|inforef\\){\\([^}]+\\)"
373     2 font-lock-constant-face)
374    ("@\\(anchor\\){\\([^}]+\\)" 2 font-lock-type-face)
375    ("@\\(dmn\\|acronym\\|value\\){\\([^}]+\\)" 2 font-lock-builtin-face)
376    ("@\\(end\\|itemx?\\) +\\(.+\\)" 2 font-lock-keyword-face keep)
377    ;; (,texinfo-environment-regexp
378    ;;  1 (texinfo-clone-environment (match-beginning 1) (match-end 1)) keep)
379    (,(concat "^@" (regexp-opt (mapcar 'car texinfo-section-list) t)
380	       ".*\n") 0 texinfo-heading-face t))
381  "Additional expressions to highlight in Texinfo mode.")
382
383(defun texinfo-clone-environment (start end)
384  (let ((endp nil))
385    (save-excursion
386      (ignore-errors
387	(goto-char start)
388	(when (looking-at "end\\Sw+\\(\\sw+\\)")
389	  (setq endp t start (match-beginning 1) end (match-end 1)))
390	(unless (get-char-property start 'text-clones)
391	  (if endp
392	      (texinfo-last-unended-begin)
393	    (forward-word 1)
394	    (texinfo-next-unmatched-end))
395	  (skip-syntax-forward "^w")
396	  (when (looking-at
397		 (concat (regexp-quote (buffer-substring start end)) "\\>"))
398	    (text-clone-create start end 'spread "\\w*")))))))
399
400
401;;; Keybindings
402(defvar texinfo-mode-map nil)
403
404;;; Keys common both to Texinfo mode and to TeX shell.
405
406(defun texinfo-define-common-keys (keymap)
407  "Define the keys both in Texinfo mode and in the texinfo-tex-shell."
408  (define-key keymap "\C-c\C-t\C-k"    'tex-kill-job)
409  (define-key keymap "\C-c\C-t\C-x"    'texinfo-quit-job)
410  (define-key keymap "\C-c\C-t\C-l"    'tex-recenter-output-buffer)
411  (define-key keymap "\C-c\C-t\C-d"    'texinfo-delete-from-print-queue)
412  (define-key keymap "\C-c\C-t\C-q"    'tex-show-print-queue)
413  (define-key keymap "\C-c\C-t\C-p"    'texinfo-tex-print)
414  (define-key keymap "\C-c\C-t\C-v"    'texinfo-tex-view)
415  (define-key keymap "\C-c\C-t\C-i"    'texinfo-texindex)
416
417  (define-key keymap "\C-c\C-t\C-r"    'texinfo-tex-region)
418  (define-key keymap "\C-c\C-t\C-b"    'texinfo-tex-buffer))
419
420;; Mode documentation displays commands in reverse order
421;; from how they are listed in the texinfo-mode-map.
422
423(if texinfo-mode-map
424    nil
425  (setq texinfo-mode-map (make-sparse-keymap))
426
427  ;; bindings for `texnfo-tex.el'
428  (texinfo-define-common-keys texinfo-mode-map)
429
430  (define-key texinfo-mode-map "\"" 'texinfo-insert-quote)
431
432  ;; bindings for `makeinfo.el'
433  (define-key texinfo-mode-map "\C-c\C-m\C-k" 'kill-compilation)
434  (define-key texinfo-mode-map "\C-c\C-m\C-l"
435    'makeinfo-recenter-compilation-buffer)
436  (define-key texinfo-mode-map "\C-c\C-m\C-r" 'makeinfo-region)
437  (define-key texinfo-mode-map "\C-c\C-m\C-b" 'makeinfo-buffer)
438
439  ;; bindings for `texinfmt.el'
440  (define-key texinfo-mode-map "\C-c\C-e\C-r"    'texinfo-format-region)
441  (define-key texinfo-mode-map "\C-c\C-e\C-b"    'texinfo-format-buffer)
442
443  ;; AUCTeX-like bindings
444  (define-key texinfo-mode-map "\e\r"		'texinfo-insert-@item)
445
446  ;; bindings for updating nodes and menus
447
448  (define-key texinfo-mode-map "\C-c\C-um"   'texinfo-master-menu)
449
450  (define-key texinfo-mode-map "\C-c\C-u\C-m"   'texinfo-make-menu)
451  (define-key texinfo-mode-map "\C-c\C-u\C-n"   'texinfo-update-node)
452  (define-key texinfo-mode-map "\C-c\C-u\C-e"   'texinfo-every-node-update)
453  (define-key texinfo-mode-map "\C-c\C-u\C-a"   'texinfo-all-menus-update)
454
455  (define-key texinfo-mode-map "\C-c\C-s"     'texinfo-show-structure)
456
457  (define-key texinfo-mode-map "\C-c}"          'up-list)
458  (define-key texinfo-mode-map "\C-c]"          'up-list)
459  (define-key texinfo-mode-map "\C-c{"		'texinfo-insert-braces)
460
461  ;; bindings for inserting strings
462  (define-key texinfo-mode-map "\C-c\C-o"     'texinfo-insert-block)
463  (define-key texinfo-mode-map "\C-c\C-c\C-d" 'texinfo-start-menu-description)
464  (define-key texinfo-mode-map "\C-c\C-c\C-s" 'texinfo-insert-@strong)
465  (define-key texinfo-mode-map "\C-c\C-c\C-e" 'texinfo-insert-@emph)
466
467  (define-key texinfo-mode-map "\C-c\C-cv"    'texinfo-insert-@var)
468  (define-key texinfo-mode-map "\C-c\C-cu"    'texinfo-insert-@uref)
469  (define-key texinfo-mode-map "\C-c\C-ct"    'texinfo-insert-@table)
470  (define-key texinfo-mode-map "\C-c\C-cs"    'texinfo-insert-@samp)
471  (define-key texinfo-mode-map "\C-c\C-cq"    'texinfo-insert-@quotation)
472  (define-key texinfo-mode-map "\C-c\C-co"    'texinfo-insert-@noindent)
473  (define-key texinfo-mode-map "\C-c\C-cn"    'texinfo-insert-@node)
474  (define-key texinfo-mode-map "\C-c\C-cm"    'texinfo-insert-@email)
475  (define-key texinfo-mode-map "\C-c\C-ck"    'texinfo-insert-@kbd)
476  (define-key texinfo-mode-map "\C-c\C-ci"    'texinfo-insert-@item)
477  (define-key texinfo-mode-map "\C-c\C-cf"    'texinfo-insert-@file)
478  (define-key texinfo-mode-map "\C-c\C-cx"    'texinfo-insert-@example)
479  (define-key texinfo-mode-map "\C-c\C-ce"    'texinfo-insert-@end)
480  (define-key texinfo-mode-map "\C-c\C-cd"    'texinfo-insert-@dfn)
481  (define-key texinfo-mode-map "\C-c\C-cc"    'texinfo-insert-@code))
482
483(easy-menu-define texinfo-mode-menu
484  texinfo-mode-map
485  "Menu used for `texinfo-mode'."
486  '("Texinfo"
487    ["Insert block"	texinfo-insert-block	t]
488    ;; ["Insert node"	texinfo-insert-@node	t]
489    "----"
490    ["Update All"	(lambda () (interactive) (texinfo-master-menu t))
491     :keys "\\[universal-argument] \\[texinfo-master-menu]"]
492    ["Update every node" texinfo-every-node-update t]
493    ["Update node"	texinfo-update-node	t]
494    ["Make Master menu"	texinfo-master-menu	t]
495    ["Make menu"	texinfo-make-menu	t]
496    ["Update all menus"	texinfo-all-menus-update t]
497    "----"
498    ["Show structure"	texinfo-show-structure	t]
499    ["Format region"	texinfo-format-region	t]
500    ["Format buffer"	texinfo-format-buffer	t]
501    ["Makeinfo region"	makeinfo-region		t]
502    ["Makeinfo buffer"	makeinfo-buffer		t]))
503
504
505(defun texinfo-filter (section list)
506  (let (res)
507    (dolist (x list) (if (eq section (cadr x)) (push (car x) res)))
508    res))
509
510(defvar texinfo-chapter-level-regexp
511  (regexp-opt (texinfo-filter 2 texinfo-section-list))
512  "Regular expression matching just the Texinfo chapter level headings.")
513
514;;; Texinfo mode
515
516;;;###autoload
517(define-derived-mode texinfo-mode text-mode "Texinfo"
518  "Major mode for editing Texinfo files.
519
520  It has these extra commands:
521\\{texinfo-mode-map}
522
523  These are files that are used as input for TeX to make printed manuals
524and also to be turned into Info files with \\[makeinfo-buffer] or
525the `makeinfo' program.  These files must be written in a very restricted and
526modified version of TeX input format.
527
528  Editing commands are like text-mode except that the syntax table is
529set up so expression commands skip Texinfo bracket groups.  To see
530what the Info version of a region of the Texinfo file will look like,
531use \\[makeinfo-region], which runs `makeinfo' on the current region.
532
533  You can show the structure of a Texinfo file with \\[texinfo-show-structure].
534This command shows the structure of a Texinfo file by listing the
535lines with the @-sign commands for @chapter, @section, and the like.
536These lines are displayed in another window called the *Occur* window.
537In that window, you can position the cursor over one of the lines and
538use \\[occur-mode-goto-occurrence], to jump to the corresponding spot
539in the Texinfo file.
540
541  In addition, Texinfo mode provides commands that insert various
542frequently used @-sign commands into the buffer.  You can use these
543commands to save keystrokes.  And you can insert balanced braces with
544\\[texinfo-insert-braces] and later use the command \\[up-list] to
545move forward past the closing brace.
546
547Also, Texinfo mode provides functions for automatically creating or
548updating menus and node pointers.  These functions
549
550  * insert the `Next', `Previous' and `Up' pointers of a node,
551  * insert or update the menu for a section, and
552  * create a master menu for a Texinfo source file.
553
554Here are the functions:
555
556    texinfo-update-node                \\[texinfo-update-node]
557    texinfo-every-node-update          \\[texinfo-every-node-update]
558    texinfo-sequential-node-update
559
560    texinfo-make-menu                  \\[texinfo-make-menu]
561    texinfo-all-menus-update           \\[texinfo-all-menus-update]
562    texinfo-master-menu
563
564    texinfo-indent-menu-description (column &optional region-p)
565
566The `texinfo-column-for-description' variable specifies the column to
567which menu descriptions are indented.
568
569Passed an argument (a prefix argument, if interactive), the
570`texinfo-update-node' and `texinfo-make-menu' functions do their jobs
571in the region.
572
573To use the updating commands, you must structure your Texinfo file
574hierarchically, such that each `@node' line, with the exception of the
575Top node, is accompanied by some kind of section line, such as an
576`@chapter' or `@section' line.
577
578If the file has a `top' node, it must be called `top' or `Top' and
579be the first node in the file.
580
581Entering Texinfo mode calls the value of `text-mode-hook', and then the
582value of `texinfo-mode-hook'."
583  (set (make-local-variable 'page-delimiter)
584       (concat
585	"^@node [ \t]*[Tt]op\\|^@\\("
586	texinfo-chapter-level-regexp
587	"\\)\\>"))
588  (make-local-variable 'require-final-newline)
589  (setq require-final-newline mode-require-final-newline)
590  (make-local-variable 'indent-tabs-mode)
591  (setq indent-tabs-mode nil)
592  (make-local-variable 'paragraph-separate)
593  (setq paragraph-separate
594	(concat "\b\\|@[a-zA-Z]*[ \n]\\|" paragraph-separate))
595  (make-local-variable 'paragraph-start)
596  (setq paragraph-start (concat "\b\\|@[a-zA-Z]*[ \n]\\|" paragraph-start))
597  (make-local-variable 'sentence-end-base)
598  (setq sentence-end-base
599	"\\(@\\(end\\)?dots{}\\|[.?!]\\)[]\"'$B!I$,1r}(B)}]*")
600  (make-local-variable 'adaptive-fill-mode)
601  (setq adaptive-fill-mode nil)
602  (make-local-variable 'fill-column)
603  (setq fill-column 70)
604  (make-local-variable 'comment-start)
605  (setq comment-start "@c ")
606  (make-local-variable 'comment-start-skip)
607  (setq comment-start-skip "@c +\\|@comment +")
608  (make-local-variable 'words-include-escapes)
609  (setq words-include-escapes t)
610  (make-local-variable 'imenu-generic-expression)
611  (setq imenu-generic-expression texinfo-imenu-generic-expression)
612  (setq imenu-case-fold-search nil)
613  (make-local-variable 'font-lock-defaults)
614  (setq font-lock-defaults
615	'(texinfo-font-lock-keywords nil nil nil backward-paragraph
616				     (font-lock-syntactic-keywords
617				      . texinfo-font-lock-syntactic-keywords)))
618  (set (make-local-variable 'parse-sexp-lookup-properties) t)
619
620  ;; Outline settings.
621  (set (make-local-variable 'outline-heading-alist)
622       ;; We should merge outline-heading-alist and texinfo-section-list
623       ;; but in the mean time, let's just generate one from the other.
624       (mapcar (lambda (x) (cons (concat "@" (car x)) (cadr x)))
625	       texinfo-section-list))
626  (set (make-local-variable 'outline-regexp)
627       (concat (regexp-opt (mapcar 'car outline-heading-alist) t)
628	       "\\>"))
629
630  (make-local-variable 'tex-start-of-header)
631  (setq tex-start-of-header "%\\*\\*start")
632  (make-local-variable 'tex-end-of-header)
633  (setq tex-end-of-header "%\\*\\*end")
634  (make-local-variable 'tex-first-line-header-regexp)
635  (setq tex-first-line-header-regexp "^\\\\input")
636  (make-local-variable 'tex-trailer)
637  (setq tex-trailer "@bye\n")
638
639  ;; Prevent filling certain lines, in addition to ones specified
640  ;; by the user.
641  (let ((prevent-filling "^@\\(def\\|multitable\\)"))
642    (set (make-local-variable 'auto-fill-inhibit-regexp)
643	 (if (null auto-fill-inhibit-regexp)
644	     prevent-filling
645	   (concat auto-fill-inhibit-regexp "\\|" prevent-filling)))))
646
647
648
649;;; Insert string commands
650
651(defvar texinfo-block-default "example")
652
653(define-skeleton texinfo-insert-block
654  "Create a matching pair @<cmd> .. @end <cmd> at point.
655Puts point on a blank line between them."
656  (setq texinfo-block-default
657	(completing-read (format "Block name [%s]: " texinfo-block-default)
658			 texinfo-environments
659			 nil nil nil nil texinfo-block-default))
660  \n "@" str \n _ \n "@end " str \n)
661
662(defun texinfo-inside-macro-p (macro &optional bound)
663  "Non-nil if inside a macro matching the regexp MACRO."
664  (condition-case nil
665      (save-excursion
666	(save-restriction
667	  (narrow-to-region bound (point))
668	  (while (progn
669		   (up-list -1)
670		   (not (condition-case nil
671			    (save-excursion
672			      (backward-sexp 1)
673			      (looking-at macro))
674			  (scan-error nil)))))
675	  t))
676    (scan-error nil)))
677
678(defun texinfo-inside-env-p (env &optional bound)
679  "Non-nil if inside an environment matching the regexp @ENV."
680  (save-excursion
681    (and (re-search-backward (concat "@\\(end\\s +\\)?" env) bound t)
682	 (not (match-end 1)))))
683
684(defvar texinfo-enable-quote-macros "@\\(code\\|samp\\|kbd\\)\\>")
685(defvar texinfo-enable-quote-envs '("example\\>" "lisp\\>"))
686(defun texinfo-insert-quote (&optional arg)
687  "Insert the appropriate quote mark for Texinfo.
688Usually inserts the value of `texinfo-open-quote' (normally ``) or
689`texinfo-close-quote' (normally ''), depending on the context.
690With prefix argument or inside @code or @example, inserts a plain \"."
691  (interactive "*P")
692  (let ((top (or (save-excursion (re-search-backward "@node\\>" nil t))
693		 (point-min))))
694    (if (or arg
695	    (= (preceding-char) ?\\)
696	    (save-excursion
697	      (backward-char (length texinfo-open-quote))
698	      (when (or (looking-at texinfo-open-quote)
699			(looking-at texinfo-close-quote))
700		(delete-char (length texinfo-open-quote))
701		t))
702	    (texinfo-inside-macro-p texinfo-enable-quote-macros top)
703	    (let ((in-env nil))
704	      (dolist (env texinfo-enable-quote-envs in-env)
705		(if (texinfo-inside-env-p env top)
706		    (setq in-env t)))))
707	(self-insert-command (prefix-numeric-value arg))
708      (insert
709       (if (memq (char-syntax (preceding-char)) '(?\( ?> ?\s))
710	   texinfo-open-quote
711	 texinfo-close-quote)))))
712
713;; The following texinfo-insert-@end command not only inserts a SPC
714;; after the @end, but tries to find out what belongs there.  It is
715;; not very smart: it does not understand nested lists.
716
717(defun texinfo-last-unended-begin ()
718  (while (and (re-search-backward texinfo-environment-regexp)
719	      (looking-at "@end"))
720    (texinfo-last-unended-begin)))
721
722(defun texinfo-next-unmatched-end ()
723  (while (and (re-search-forward texinfo-environment-regexp)
724	      (save-excursion
725		(goto-char (match-beginning 0))
726		(not (looking-at "@end"))))
727    (texinfo-next-unmatched-end)))
728
729(defun texinfo-insert-@end ()
730  "Insert the matching `@end' for the last Texinfo command that needs one."
731  (interactive)
732  (let ((string
733	 (ignore-errors
734	   (save-excursion
735	     (texinfo-last-unended-begin)
736	     (match-string 1)))))
737    (insert "@end ")
738    (if string (insert string "\n"))))
739
740;; The following insert commands accept a prefix arg N, which is the
741;; number of words (actually s-exprs) that should be surrounded by
742;; braces.  Thus you can first paste a variable name into a .texinfo
743;; buffer, then say C-u 1 C-c C-c v at the beginning of the just
744;; pasted variable name to put @var{...} *around* the variable name.
745;; Operate on previous word or words with negative arg.
746
747;; These commands use texinfo-insert-@-with-arg
748(defun texinfo-insert-@-with-arg (string &optional arg)
749  (if arg
750      (progn
751        (setq arg (prefix-numeric-value arg))
752        (if (< arg 0)
753            (progn
754              (skip-chars-backward " \t\n\r\f")
755              (save-excursion
756                (forward-sexp arg)
757                (insert "@" string "{"))
758              (insert "}"))
759          (skip-chars-forward " \t\n\r\f")
760          (insert "@" string "{")
761          (forward-sexp arg)
762          (insert "}")))
763    (insert "@" string "{}")
764    (backward-char)))
765
766(defun texinfo-insert-braces ()
767  "Make a pair of braces and be poised to type inside of them.
768Use \\[up-list] to move forward out of the braces."
769  (interactive)
770  (insert "{}")
771  (backward-char))
772
773(defun texinfo-insert-@code (&optional arg)
774  "Insert a `@code{...}' command in a Texinfo buffer.
775A numeric argument says how many words the braces should surround.
776The default is not to surround any existing words with the braces."
777  (interactive "P")
778  (texinfo-insert-@-with-arg "code" arg))
779
780(defun texinfo-insert-@dfn (&optional arg)
781  "Insert a `@dfn{...}' command in a Texinfo buffer.
782A numeric argument says how many words the braces should surround.
783The default is not to surround any existing words with the braces."
784  (interactive "P")
785  (texinfo-insert-@-with-arg "dfn" arg))
786
787(defun texinfo-insert-@email (&optional arg)
788  "Insert a `@email{...}' command in a Texinfo buffer.
789A numeric argument says how many words the braces should surround.
790The default is not to surround any existing words with the braces."
791  (interactive "P")
792  (texinfo-insert-@-with-arg "email" arg))
793
794(defun texinfo-insert-@emph (&optional arg)
795  "Insert a `@emph{...}' command in a Texinfo buffer.
796A numeric argument says how many words the braces should surround.
797The default is not to surround any existing words with the braces."
798  (interactive "P")
799  (texinfo-insert-@-with-arg "emph" arg))
800
801(defun texinfo-insert-@example ()
802  "Insert the string `@example' in a Texinfo buffer."
803  (interactive)
804  (insert "@example\n"))
805
806(defun texinfo-insert-@file (&optional arg)
807  "Insert a `@file{...}' command in a Texinfo buffer.
808A numeric argument says how many words the braces should surround.
809The default is not to surround any existing words with the braces."
810  (interactive "P")
811  (texinfo-insert-@-with-arg "file" arg))
812
813(defun texinfo-insert-@item ()
814  "Insert the string `@item' in a Texinfo buffer.
815If in a table defined by @table, follow said string with a space.
816Otherwise, follow with a newline."
817  (interactive)
818  (insert "@item"
819	  (if (equal (ignore-errors
820		      (save-excursion
821			(texinfo-last-unended-begin)
822			(match-string 1)))
823		     "table")
824	      ?\s
825	    ?\n)))
826
827(defun texinfo-insert-@kbd (&optional arg)
828  "Insert a `@kbd{...}' command in a Texinfo buffer.
829A numeric argument says how many words the braces should surround.
830The default is not to surround any existing words with the braces."
831  (interactive "P")
832  (texinfo-insert-@-with-arg "kbd" arg))
833
834(defun texinfo-insert-@node ()
835  "Insert the string `@node' in a Texinfo buffer.
836Insert a comment on the following line indicating the order of
837arguments to @node.  Insert a carriage return after the comment line.
838Leave point after `@node'."
839  (interactive)
840  (insert "@node \n@comment  node-name,  next,  previous,  up\n")
841  (forward-line -2)
842  (forward-char 6))
843
844(defun texinfo-insert-@noindent ()
845  "Insert the string `@noindent' in a Texinfo buffer."
846  (interactive)
847  (insert "@noindent\n"))
848
849(defun texinfo-insert-@quotation ()
850  "Insert the string `@quotation' in a Texinfo buffer."
851  (interactive)
852  (insert "@quotation\n"))
853
854(defun texinfo-insert-@samp (&optional arg)
855  "Insert a `@samp{...}' command in a Texinfo buffer.
856A numeric argument says how many words the braces should surround.
857The default is not to surround any existing words with the braces."
858  (interactive "P")
859  (texinfo-insert-@-with-arg "samp" arg))
860
861(defun texinfo-insert-@strong (&optional arg)
862  "Insert a `@strong{...}' command in a Texinfo buffer.
863A numeric argument says how many words the braces should surround.
864The default is not to surround any existing words with the braces."
865  (interactive "P")
866  (texinfo-insert-@-with-arg "strong" arg))
867
868(defun texinfo-insert-@table ()
869  "Insert the string `@table' in a Texinfo buffer."
870  (interactive)
871  (insert "@table "))
872
873(defun texinfo-insert-@var (&optional arg)
874  "Insert a `@var{}' command in a Texinfo buffer.
875A numeric argument says how many words the braces should surround.
876The default is not to surround any existing words with the braces."
877  (interactive "P")
878  (texinfo-insert-@-with-arg "var" arg))
879
880(defun texinfo-insert-@uref (&optional arg)
881  "Insert a `@uref{}' command in a Texinfo buffer.
882A numeric argument says how many words the braces should surround.
883The default is not to surround any existing words with the braces."
884  (interactive "P")
885  (texinfo-insert-@-with-arg "uref" arg))
886(defalias 'texinfo-insert-@url 'texinfo-insert-@uref)
887
888;;; Texinfo file structure
889
890(defun texinfo-show-structure (&optional nodes-too)
891  "Show the structure of a Texinfo file.
892List the lines in the file that begin with the @-sign commands for
893@chapter, @section, and the like.
894
895With optional argument (prefix if interactive), list both the lines
896with @-sign commands for @chapter, @section, and the like, and list
897@node lines.
898
899Lines with structuring commands beginning in them are displayed in
900another buffer named `*Occur*'.  In that buffer, you can move point to
901one of those lines and then use
902\\<occur-mode-map>\\[occur-mode-goto-occurrence],
903to jump to the corresponding spot in the Texinfo source file."
904
905  (interactive "P")
906  ;; First, remember current location
907  (let (current-location)
908    (save-excursion
909      (end-of-line)            ; so as to find section on current line
910      (if (re-search-backward
911           ;; do not require `texinfo-section-types-regexp' in texnfo-upd.el
912           "^@\\(chapter \\|sect\\|subs\\|subh\\|unnum\\|major\\|chapheading \\|heading \\|appendix\\)"
913           nil t)
914          (setq current-location
915                (progn
916                  (beginning-of-line)
917                  (buffer-substring (point) (progn (end-of-line) (point)))))
918        ;; else point is located before any section command.
919        (setq current-location "tex")))
920    ;; Second, create and format an *Occur* buffer
921    (save-excursion
922      (goto-char (point-min))
923      (occur (concat "^\\(?:" (if nodes-too "@node\\>\\|")
924		     outline-regexp "\\)")))
925    (pop-to-buffer "*Occur*")
926    (goto-char (point-min))
927    (let ((inhibit-read-only t))
928      (flush-lines "-----")
929      ;; Now format the "*Occur*" buffer to show the structure.
930      ;; Thanks to ceder@signum.se (Per Cederqvist)
931      (goto-char (point-max))
932      (let (level)
933        (while (re-search-backward "^ *[0-9]*:@\\(\\sw+\\)" nil 0)
934          (goto-char (1- (match-beginning 1)))
935          (setq level
936                (or (cadr (assoc (match-string 1) texinfo-section-list)) 2))
937          (indent-to-column (+ (current-column) (* 4 (- level 2))))
938          (beginning-of-line))))
939    ;; Third, go to line corresponding to location in source file
940    ;; potential bug: two exactly similar `current-location' lines ...
941    (goto-char (point-min))
942    (re-search-forward current-location nil t)
943    (beginning-of-line)
944    ))
945
946
947;;; The  tex  and  print  function definitions:
948
949(defcustom texinfo-texi2dvi-command "texi2dvi"
950  "*Command used by `texinfo-tex-buffer' to run TeX and texindex on a buffer."
951  :type 'string
952  :group 'texinfo)
953
954(defcustom texinfo-tex-command "tex"
955  "*Command used by `texinfo-tex-region' to run TeX on a region."
956  :type 'string
957  :group 'texinfo)
958
959(defcustom texinfo-texindex-command "texindex"
960  "*Command used by `texinfo-texindex' to sort unsorted index files."
961  :type 'string
962  :group 'texinfo)
963
964(defcustom texinfo-delete-from-print-queue-command "lprm"
965  "*Command string used to delete a job from the line printer queue.
966Command is used by \\[texinfo-delete-from-print-queue] based on
967number provided by a previous \\[tex-show-print-queue]
968command."
969  :type 'string
970  :group 'texinfo)
971
972(defvar texinfo-tex-trailer "@bye"
973  "String appended after a region sent to TeX by `texinfo-tex-region'.")
974
975(defun texinfo-tex-region (beg end)
976  "Run TeX on the current region.
977This works by writing a temporary file (`tex-zap-file') in the directory
978that is the value of `tex-directory', then running TeX on that file.
979
980The first line of the buffer is copied to the
981temporary file; and if the buffer has a header, it is written to the
982temporary file before the region itself.  The buffer's header is all lines
983between the strings defined by `tex-start-of-header' and `tex-end-of-header'
984inclusive.  The header must start in the first 100 lines.
985
986The value of `texinfo-tex-trailer' is appended to the temporary file after the region."
987  (interactive "r")
988  (require 'tex-mode)
989  (let ((tex-command texinfo-tex-command)
990	(tex-trailer texinfo-tex-trailer))
991    (tex-region beg end)))
992
993(defun texinfo-tex-buffer ()
994  "Run TeX on visited file, once or twice, to make a correct `.dvi' file."
995  (interactive)
996  (require 'tex-mode)
997  (let ((tex-command texinfo-texi2dvi-command)
998	;; Disable tex-start-options-string.  texi2dvi would not
999	;; understand anything specified here.
1000	(tex-start-options-string ""))
1001    (tex-buffer)))
1002
1003(defun texinfo-texindex ()
1004  "Run `texindex' on unsorted index files.
1005The index files are made by \\[texinfo-tex-region] or \\[texinfo-tex-buffer].
1006This runs the shell command defined by `texinfo-texindex-command'."
1007  (interactive)
1008  (require 'tex-mode)
1009  (tex-send-command texinfo-texindex-command (concat tex-zap-file ".??"))
1010  ;; alternatively
1011  ;; (send-string "tex-shell"
1012  ;;              (concat texinfo-texindex-command
1013  ;;                      " " tex-zap-file ".??" "\n"))
1014  (tex-recenter-output-buffer nil))
1015
1016(defun texinfo-tex-print ()
1017  "Print `.dvi' file made by \\[texinfo-tex-region] or \\[texinfo-tex-buffer].
1018This runs the shell command defined by `tex-dvi-print-command'."
1019  (interactive)
1020  (require 'tex-mode)
1021  (tex-print))
1022
1023(defun texinfo-tex-view ()
1024  "View `.dvi' file made by \\[texinfo-tex-region] or \\[texinfo-tex-buffer].
1025This runs the shell command defined by `tex-dvi-view-command'."
1026  (interactive)
1027  (require 'tex-mode)
1028  (tex-view))
1029
1030(defun texinfo-quit-job ()
1031  "Quit currently running TeX job, by sending an `x' to it."
1032  (interactive)
1033  (if (not (get-process "tex-shell"))
1034      (error "No TeX shell running"))
1035  (tex-send-command "x"))
1036;; alternatively:
1037;; save-excursion
1038;;   (set-buffer (get-buffer "*tex-shell*"))
1039;;   (goto-char (point-max))
1040;;   (insert "x")
1041;;   (comint-send-input)
1042
1043(defun texinfo-delete-from-print-queue (job-number)
1044  "Delete job from the line printer spooling queue.
1045You are prompted for the job number (use a number shown by a previous
1046\\[tex-show-print-queue] command)."
1047  (interactive "nPrinter job number for deletion: ")
1048  (require 'tex-mode)
1049  (if (tex-shell-running)
1050      (tex-kill-job)
1051    (tex-start-shell))
1052  (tex-send-command texinfo-delete-from-print-queue-command job-number)
1053  ;; alternatively
1054  ;; (send-string "tex-shell"
1055  ;;              (concat
1056  ;;               texinfo-delete-from-print-queue-command
1057  ;;               " "
1058  ;;               job-number"\n"))
1059  (tex-recenter-output-buffer nil))
1060
1061(provide 'texinfo)
1062
1063;; arch-tag: 005d7c38-43b9-4b7d-aa1d-aea69bae73e1
1064;;; texinfo.el ends here
1065