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effdc6a2 | 1 | ;;; man.el --- browse UNIX manual pages |
6594deb0 | 2 | |
00ed33e7 | 3 | ;; Copyright (C) 1993, 1994, 1996, 1997 Free Software Foundation, Inc. |
9750e079 | 4 | |
effdc6a2 | 5 | ;; Author: Barry A. Warsaw <bwarsaw@cen.com> |
effdc6a2 | 6 | ;; Keywords: help |
b3435a2f | 7 | ;; Adapted-By: ESR, pot |
e5167999 | 8 | |
1a20f48d JA |
9 | ;; This file is part of GNU Emacs. |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 13 | ;; the Free Software Foundation; either version 2, or (at your option) |
1a20f48d JA |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
1a20f48d | 25 | |
edbd2f74 ER |
26 | ;;; Commentary: |
27 | ||
b3435a2f FP |
28 | ;; This code provides a function, `man', with which you can browse |
29 | ;; UNIX manual pages. Formatting is done in background so that you | |
30 | ;; can continue to use your Emacs while processing is going on. | |
effdc6a2 RS |
31 | ;; |
32 | ;; The mode also supports hypertext-like following of manual page SEE | |
33 | ;; ALSO references, and other features. See below or do `?' in a | |
34 | ;; manual page buffer for details. | |
35 | ||
36 | ;; ========== Credits and History ========== | |
37 | ;; In mid 1991, several people posted some interesting improvements to | |
38 | ;; man.el from the standard emacs 18.57 distribution. I liked many of | |
a7acbbe4 | 39 | ;; these, but wanted everything in one single package, so I decided |
b3435a2f | 40 | ;; to incorporate them into a single manual browsing mode. While |
effdc6a2 RS |
41 | ;; much of the code here has been rewritten, and some features added, |
42 | ;; these folks deserve lots of credit for providing the initial | |
43 | ;; excellent packages on which this one is based. | |
44 | ||
45 | ;; Nick Duffek <duffek@chaos.cs.brandeis.edu>, posted a very nice | |
46 | ;; improvement which retrieved and cleaned the manpages in a | |
47 | ;; background process, and which correctly deciphered such options as | |
48 | ;; man -k. | |
49 | ||
50 | ;; Eric Rose <erose@jessica.stanford.edu>, submitted manual.el which | |
51 | ;; provided a very nice manual browsing mode. | |
52 | ||
eb8c3be9 | 53 | ;; This package was available as `superman.el' from the LCD package |
effdc6a2 RS |
54 | ;; for some time before it was accepted into Emacs 19. The entry |
55 | ;; point and some other names have been changed to make it a drop-in | |
56 | ;; replacement for the old man.el package. | |
57 | ||
b3435a2f FP |
58 | ;; Francesco Potorti` <pot@cnuce.cnr.it> cleaned it up thoroughly, |
59 | ;; making it faster, more robust and more tolerant of different | |
a7acbbe4 | 60 | ;; systems' man idiosyncrasies. |
b3435a2f | 61 | |
effdc6a2 RS |
62 | ;; ========== Features ========== |
63 | ;; + Runs "man" in the background and pipes the results through a | |
64 | ;; series of sed and awk scripts so that all retrieving and cleaning | |
65 | ;; is done in the background. The cleaning commands are configurable. | |
66 | ;; + Syntax is the same as Un*x man | |
67 | ;; + Functionality is the same as Un*x man, including "man -k" and | |
c3343fcf | 68 | ;; "man <section>", etc. |
effdc6a2 RS |
69 | ;; + Provides a manual browsing mode with keybindings for traversing |
70 | ;; the sections of a manpage, following references in the SEE ALSO | |
71 | ;; section, and more. | |
72 | ;; + Multiple manpages created with the same man command are put into | |
73 | ;; a narrowed buffer circular list. | |
edbd2f74 | 74 | |
b3435a2f FP |
75 | ;; ============= TODO =========== |
76 | ;; - Add a command for printing. | |
77 | ;; - The awk script deletes multiple blank lines. This behaviour does | |
78 | ;; not allow to understand if there was indeed a blank line at the | |
79 | ;; end or beginning of a page (after the header, or before the | |
80 | ;; footer). A different algorithm should be used. It is easy to | |
81 | ;; compute how many blank lines there are before and after the page | |
82 | ;; headers, and after the page footer. But it is possible to compute | |
83 | ;; the number of blank lines before the page footer by euristhics | |
84 | ;; only. Is it worth doing? | |
98fd7017 FP |
85 | ;; - Allow a user option to mean that all the manpages should go in |
86 | ;; the same buffer, where they can be browsed with M-n and M-p. | |
b3435a2f FP |
87 | ;; - Allow completion on the manpage name when calling man. This |
88 | ;; requires a reliable list of places where manpages can be found. The | |
89 | ;; drawback would be that if the list is not complete, the user might | |
90 | ;; be led to believe that the manpages in the missing directories do | |
91 | ;; not exist. | |
92 | ||
d0aede3f | 93 | \f |
e5167999 ER |
94 | ;;; Code: |
95 | ||
effdc6a2 | 96 | (require 'assoc) |
effdc6a2 | 97 | |
d0aede3f FP |
98 | ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
99 | ;; empty defvars (keep the compiler quiet) | |
100 | ||
00ed33e7 RS |
101 | (defgroup man nil |
102 | "Browse UNIX manual pages." | |
103 | :prefix "Man-" | |
104 | :group 'help) | |
105 | ||
106 | ||
d0aede3f FP |
107 | (defvar Man-notify) |
108 | (defvar Man-current-page) | |
109 | (defvar Man-page-list) | |
00ed33e7 | 110 | (defcustom Man-filter-list nil |
58ffb6ae RS |
111 | "*Manpage cleaning filter command phrases. |
112 | This variable contains a list of the following form: | |
113 | ||
114 | '((command-string phrase-string*)*) | |
115 | ||
116 | Each phrase-string is concatenated onto the command-string to form a | |
117 | command filter. The (standard) output (and standard error) of the Un*x | |
118 | man command is piped through each command filter in the order the | |
119 | commands appear in the association list. The final output is placed in | |
00ed33e7 RS |
120 | the manpage buffer." |
121 | :type '(repeat (list (string :tag "Command String") | |
122 | (repeat :inline t | |
123 | (string :tag "Phrase String")))) | |
124 | :group 'man) | |
58ffb6ae | 125 | |
d0aede3f FP |
126 | (defvar Man-original-frame) |
127 | (defvar Man-arguments) | |
d0aede3f FP |
128 | (defvar Man-sections-alist) |
129 | (defvar Man-refpages-alist) | |
58ffb6ae RS |
130 | (defvar Man-uses-untabify-flag t |
131 | "When non-nil use `untabify' instead of Man-untabify-command.") | |
d0aede3f | 132 | (defvar Man-page-mode-string) |
58ffb6ae RS |
133 | (defvar Man-sed-script nil |
134 | "Script for sed to nuke backspaces and ANSI codes from manpages.") | |
d0aede3f | 135 | |
effdc6a2 RS |
136 | ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
137 | ;; user variables | |
138 | ||
00ed33e7 RS |
139 | (defcustom Man-fontify-manpage-flag t |
140 | "*Make up the manpage with fonts." | |
141 | :type 'boolean | |
142 | :group 'man) | |
6e7e47f6 | 143 | |
00ed33e7 RS |
144 | (defcustom Man-overstrike-face 'bold |
145 | "*Face to use when fontifying overstrike." | |
146 | :type 'face | |
147 | :group 'man) | |
6e7e47f6 | 148 | |
00ed33e7 RS |
149 | (defcustom Man-underline-face 'underline |
150 | "*Face to use when fontifying underlining." | |
151 | :type 'face | |
152 | :group 'man) | |
2788b7c9 | 153 | |
b3435a2f | 154 | ;; Use the value of the obsolete user option Man-notify, if set. |
00ed33e7 | 155 | (defcustom Man-notify-method (if (boundp 'Man-notify) Man-notify 'friendly) |
effdc6a2 | 156 | "*Selects the behavior when manpage is ready. |
b3435a2f FP |
157 | This variable may have one of the following values, where (sf) means |
158 | that the frames are switched, so the manpage is displayed in the frame | |
159 | where the man command was called from: | |
effdc6a2 | 160 | |
b51aeeff | 161 | newframe -- put the manpage in its own frame (see `Man-frame-parameters') |
b3435a2f FP |
162 | pushy -- make the manpage the current buffer in the current window |
163 | bully -- make the manpage the current buffer and only window (sf) | |
164 | aggressive -- make the manpage the current buffer in the other window (sf) | |
165 | friendly -- display manpage in the other window but don't make current (sf) | |
166 | polite -- don't display manpage, but prints message and beep when ready | |
effdc6a2 | 167 | quiet -- like `polite', but don't beep |
b3435a2f | 168 | meek -- make no indication that the manpage is ready |
effdc6a2 | 169 | |
00ed33e7 RS |
170 | Any other value of `Man-notify-method' is equivalent to `meek'." |
171 | :type '(radio (const newframe) (const pushy) (const bully) | |
172 | (const aggressive) (const friendly) | |
173 | (const polite) (const quiet) (const meek)) | |
174 | :group 'man) | |
effdc6a2 | 175 | |
00ed33e7 RS |
176 | (defcustom Man-frame-parameters nil |
177 | "*Frame parameter list for creating a new frame for a manual page." | |
178 | :type 'sexp | |
179 | :group 'man) | |
b51aeeff | 180 | |
00ed33e7 | 181 | (defcustom Man-downcase-section-letters-flag t |
effdc6a2 RS |
182 | "*Letters in sections are converted to lower case. |
183 | Some Un*x man commands can't handle uppercase letters in sections, for | |
184 | example \"man 2V chmod\", but they are often displayed in the manpage | |
c3343fcf | 185 | with the upper case letter. When this variable is t, the section |
effdc6a2 | 186 | letter (e.g., \"2V\") is converted to lowercase (e.g., \"2v\") before |
00ed33e7 RS |
187 | being sent to the man background process." |
188 | :type 'boolean | |
189 | :group 'man) | |
effdc6a2 | 190 | |
00ed33e7 RS |
191 | (defcustom Man-circular-pages-flag t |
192 | "*If t, the manpage list is treated as circular for traversal." | |
193 | :type 'boolean | |
194 | :group 'man) | |
effdc6a2 | 195 | |
00ed33e7 | 196 | (defcustom Man-section-translations-alist |
b3435a2f FP |
197 | (list |
198 | '("3C++" . "3") | |
199 | ;; Some systems have a real 3x man section, so let's comment this. | |
200 | ;; '("3X" . "3") ; Xlib man pages | |
201 | '("3X11" . "3") | |
202 | '("1-UCB" . "")) | |
effdc6a2 RS |
203 | "*Association list of bogus sections to real section numbers. |
204 | Some manpages (e.g. the Sun C++ 2.1 manpages) have section numbers in | |
c3343fcf | 205 | their references which Un*x `man' does not recognize. This |
eb8c3be9 | 206 | association list is used to translate those sections, when found, to |
00ed33e7 RS |
207 | the associated section number." |
208 | :type '(repeat (cons (string :tag "Bogus Section") | |
209 | (string :tag "Real Section"))) | |
210 | :group 'man) | |
effdc6a2 | 211 | |
6e7e47f6 FP |
212 | (defvar manual-program "man" |
213 | "The name of the program that produces man pages.") | |
214 | ||
b3435a2f | 215 | (defvar Man-untabify-command "pr" |
6e7e47f6 | 216 | "Command used for untabifying.") |
b3435a2f FP |
217 | |
218 | (defvar Man-untabify-command-args (list "-t" "-e") | |
6e7e47f6 | 219 | "List of arguments to be passed to Man-untabify-command (which see).") |
b3435a2f FP |
220 | |
221 | (defvar Man-sed-command "sed" | |
6e7e47f6 | 222 | "Command used for processing sed scripts.") |
b3435a2f FP |
223 | |
224 | (defvar Man-awk-command "awk" | |
6e7e47f6 | 225 | "Command used for processing awk scripts.") |
effdc6a2 RS |
226 | |
227 | (defvar Man-mode-line-format | |
228 | '("" mode-line-modified | |
b3435a2f | 229 | mode-line-buffer-identification " " |
effdc6a2 | 230 | global-mode-string |
056a5ef3 | 231 | " " Man-page-mode-string |
b3435a2f | 232 | " %[(" mode-name mode-line-process minor-mode-alist ")%]----" |
effdc6a2 | 233 | (-3 . "%p") "-%-") |
6e7e47f6 | 234 | "Mode line format for manual mode buffer.") |
effdc6a2 RS |
235 | |
236 | (defvar Man-mode-map nil | |
6e7e47f6 | 237 | "Keymap for Man mode.") |
effdc6a2 | 238 | |
e660d0db | 239 | (defvar Man-mode-hook nil |
6e7e47f6 | 240 | "Hook run when Man mode is enabled.") |
effdc6a2 | 241 | |
c2d606f4 | 242 | (defvar Man-cooked-hook nil |
6e7e47f6 | 243 | "Hook run after removing backspaces but before Man-mode processing.") |
b3435a2f FP |
244 | |
245 | (defvar Man-name-regexp "[-a-zA-Z0-9_][-a-zA-Z0-9_.]*" | |
6e7e47f6 | 246 | "Regular expression describing the name of a manpage (without section).") |
c2d606f4 | 247 | |
f5f76002 | 248 | (defvar Man-section-regexp "[0-9][a-zA-Z+]*\\|[LNln]" |
6e7e47f6 | 249 | "Regular expression describing a manpage section within parentheses.") |
effdc6a2 | 250 | |
b3435a2f FP |
251 | (defvar Man-page-header-regexp |
252 | (concat "^[ \t]*\\(" Man-name-regexp | |
253 | "(\\(" Man-section-regexp "\\))\\).*\\1") | |
6e7e47f6 | 254 | "Regular expression describing the heading of a page.") |
b3435a2f FP |
255 | |
256 | (defvar Man-heading-regexp "^\\([A-Z][A-Z ]+\\)$" | |
6e7e47f6 | 257 | "Regular expression describing a manpage heading entry.") |
effdc6a2 RS |
258 | |
259 | (defvar Man-see-also-regexp "SEE ALSO" | |
6e7e47f6 | 260 | "Regular expression for SEE ALSO heading (or your equivalent). |
effdc6a2 RS |
261 | This regexp should not start with a `^' character.") |
262 | ||
2cd4790e | 263 | (defvar Man-first-heading-regexp "^[ \t]*NAME$\\|^[ \t]*No manual entry fo.*$" |
6e7e47f6 | 264 | "Regular expression describing first heading on a manpage. |
effdc6a2 RS |
265 | This regular expression should start with a `^' character.") |
266 | ||
3eedeb85 | 267 | (defvar Man-reference-regexp |
b3435a2f | 268 | (concat "\\(" Man-name-regexp "\\)(\\(" Man-section-regexp "\\))") |
6e7e47f6 | 269 | "Regular expression describing a reference in the SEE ALSO section.") |
effdc6a2 | 270 | |
733155db | 271 | (defvar Man-switches "" |
6e7e47f6 | 272 | "Switches passed to the man command, as a single string.") |
effdc6a2 | 273 | |
e660d0db RS |
274 | (defvar Man-specified-section-option |
275 | (if (string-match "-solaris[0-9.]*$" system-configuration) | |
276 | "-s" | |
277 | "") | |
6e7e47f6 | 278 | "Option that indicates a specified a manual section name.") |
9de0760c | 279 | |
effdc6a2 RS |
280 | ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
281 | ;; end user variables | |
effdc6a2 RS |
282 | \f |
283 | ;; other variables and keymap initializations | |
284 | (make-variable-buffer-local 'Man-sections-alist) | |
285 | (make-variable-buffer-local 'Man-refpages-alist) | |
286 | (make-variable-buffer-local 'Man-page-list) | |
287 | (make-variable-buffer-local 'Man-current-page) | |
288 | (make-variable-buffer-local 'Man-page-mode-string) | |
75db9a64 | 289 | (make-variable-buffer-local 'Man-original-frame) |
b3435a2f | 290 | (make-variable-buffer-local 'Man-arguments) |
effdc6a2 RS |
291 | |
292 | (setq-default Man-sections-alist nil) | |
293 | (setq-default Man-refpages-alist nil) | |
294 | (setq-default Man-page-list nil) | |
295 | (setq-default Man-current-page 0) | |
b3435a2f | 296 | (setq-default Man-page-mode-string "1 of 1") |
effdc6a2 | 297 | |
6e7e47f6 FP |
298 | (defconst Man-sysv-sed-script "\ |
299 | /\b/ { s/_\b//g | |
300 | s/\b_//g | |
301 | s/o\b+/o/g | |
f90531cc | 302 | s/+\bo/o/g |
6e7e47f6 FP |
303 | :ovstrk |
304 | s/\\(.\\)\b\\1/\\1/g | |
305 | t ovstrk | |
306 | } | |
307 | /\e\\[[0-9][0-9]*m/ s///g" | |
308 | "Script for sysV-like sed to nuke backspaces and ANSI codes from manpages.") | |
309 | ||
310 | (defconst Man-berkeley-sed-script "\ | |
311 | /\b/ { s/_\b//g\\ | |
312 | s/\b_//g\\ | |
313 | s/o\b+/o/g\\ | |
f90531cc | 314 | s/+\bo/o/g\\ |
6e7e47f6 FP |
315 | :ovstrk\\ |
316 | s/\\(.\\)\b\\1/\\1/g\\ | |
317 | t ovstrk\\ | |
318 | }\\ | |
319 | /\e\\[[0-9][0-9]*m/ s///g" | |
320 | "Script for berkeley-like sed to nuke backspaces and ANSI codes from manpages.") | |
321 | ||
f655106b KH |
322 | (defvar man-mode-syntax-table |
323 | (let ((table (copy-syntax-table (standard-syntax-table)))) | |
324 | (modify-syntax-entry ?. "w" table) | |
325 | (modify-syntax-entry ?_ "w" table) | |
326 | table) | |
327 | "Syntax table used in Man mode buffers.") | |
328 | ||
effdc6a2 RS |
329 | (if Man-mode-map |
330 | nil | |
331 | (setq Man-mode-map (make-keymap)) | |
332 | (suppress-keymap Man-mode-map) | |
333 | (define-key Man-mode-map " " 'scroll-up) | |
334 | (define-key Man-mode-map "\177" 'scroll-down) | |
335 | (define-key Man-mode-map "n" 'Man-next-section) | |
336 | (define-key Man-mode-map "p" 'Man-previous-section) | |
337 | (define-key Man-mode-map "\en" 'Man-next-manpage) | |
338 | (define-key Man-mode-map "\ep" 'Man-previous-manpage) | |
b3435a2f FP |
339 | (define-key Man-mode-map ">" 'end-of-buffer) |
340 | (define-key Man-mode-map "<" 'beginning-of-buffer) | |
341 | (define-key Man-mode-map "." 'beginning-of-buffer) | |
effdc6a2 | 342 | (define-key Man-mode-map "r" 'Man-follow-manual-reference) |
effdc6a2 RS |
343 | (define-key Man-mode-map "g" 'Man-goto-section) |
344 | (define-key Man-mode-map "s" 'Man-goto-see-also-section) | |
b3435a2f | 345 | (define-key Man-mode-map "k" 'Man-kill) |
effdc6a2 | 346 | (define-key Man-mode-map "q" 'Man-quit) |
b3435a2f | 347 | (define-key Man-mode-map "m" 'man) |
e7bf8d10 | 348 | (define-key Man-mode-map "\r" 'man-follow) |
effdc6a2 RS |
349 | (define-key Man-mode-map "?" 'describe-mode) |
350 | ) | |
351 | ||
352 | \f | |
353 | ;; ====================================================================== | |
354 | ;; utilities | |
355 | ||
58ffb6ae | 356 | (defun Man-init-defvars () |
b3435a2f FP |
357 | "Used for initialising variables based on the value of window-system. |
358 | This is necessary if one wants to dump man.el with emacs." | |
359 | ||
b3435a2f FP |
360 | ;; The following is necessary until fonts are implemented on |
361 | ;; terminals. | |
362 | (setq Man-fontify-manpage-flag (and Man-fontify-manpage-flag | |
363 | window-system)) | |
364 | ||
58ffb6ae RS |
365 | (setq Man-sed-script |
366 | (cond | |
367 | (Man-fontify-manpage-flag | |
368 | nil) | |
369 | ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script)) | |
370 | Man-sysv-sed-script) | |
371 | ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script)) | |
372 | Man-berkeley-sed-script) | |
373 | (t | |
374 | nil))) | |
375 | ||
376 | (setq Man-filter-list | |
377 | (list | |
b3435a2f | 378 | (cons |
58ffb6ae RS |
379 | Man-sed-command |
380 | (list | |
381 | (if Man-sed-script | |
382 | (concat "-e '" Man-sed-script "'") | |
383 | "") | |
384 | "-e '/^[\001-\032][\001-\032]*$/d'" | |
385 | "-e '/\e[789]/s///g'" | |
386 | "-e '/Reformatting page. Wait/d'" | |
387 | "-e '/Reformatting entry. Wait/d'" | |
388 | "-e '/^[ \t]*Hewlett-Packard[ \t]Company[ \t]*-[ \t][0-9]*[ \t]-/d'" | |
389 | "-e '/^[ \t]*Hewlett-Packard[ \t]*-[ \t][0-9]*[ \t]-.*$/d'" | |
390 | "-e '/^[ \t][ \t]*-[ \t][0-9]*[ \t]-[ \t]*Formatted:.*[0-9]$/d'" | |
391 | "-e '/^[ \t]*Page[ \t][0-9]*.*(printed[ \t][0-9\\/]*)$/d'" | |
392 | "-e '/^Printed[ \t][0-9].*[0-9]$/d'" | |
393 | "-e '/^[ \t]*X[ \t]Version[ \t]1[01].*Release[ \t][0-9]/d'" | |
008d825a | 394 | "-e '/^[A-Za-z].*Last[ \t]change:/d'" |
58ffb6ae RS |
395 | "-e '/^Sun[ \t]Release[ \t][0-9].*[0-9]$/d'" |
396 | "-e '/[ \t]*Copyright [0-9]* UNIX System Laboratories, Inc.$/d'" | |
397 | "-e '/^[ \t]*Rev\\..*Page [0-9][0-9]*$/d'" | |
398 | )) | |
399 | (cons | |
400 | Man-awk-command | |
401 | (list | |
402 | "'\n" | |
403 | "BEGIN { blankline=0; anonblank=0; }\n" | |
404 | "/^$/ { if (anonblank==0) next; }\n" | |
405 | "{ anonblank=1; }\n" | |
406 | "/^$/ { blankline++; next; }\n" | |
407 | "{ if (blankline>0) { print \"\"; blankline=0; } print $0; }\n" | |
408 | "'" | |
409 | )) | |
410 | (if (not Man-uses-untabify-flag) | |
411 | (cons | |
412 | Man-untabify-command | |
413 | Man-untabify-command-args) | |
414 | ))) | |
b3435a2f | 415 | ) |
effdc6a2 | 416 | |
d0aede3f FP |
417 | (defsubst Man-match-substring (&optional n string) |
418 | "Return the substring matched by the last search. | |
419 | Optional arg N means return the substring matched by the Nth paren | |
420 | grouping. Optional second arg STRING means return a substring from | |
421 | that string instead of from the current buffer." | |
422 | (if (null n) (setq n 0)) | |
423 | (if string | |
424 | (substring string (match-beginning n) (match-end n)) | |
425 | (buffer-substring (match-beginning n) (match-end n)))) | |
426 | ||
b3435a2f FP |
427 | (defsubst Man-make-page-mode-string () |
428 | "Formats part of the mode line for Man mode." | |
429 | (format "%s page %d of %d" | |
430 | (or (nth 2 (nth (1- Man-current-page) Man-page-list)) | |
431 | "") | |
432 | Man-current-page | |
433 | (length Man-page-list))) | |
434 | ||
435 | (defsubst Man-build-man-command () | |
effdc6a2 | 436 | "Builds the entire background manpage and cleaning command." |
0020dbcd EZ |
437 | (let ((command (concat manual-program " " Man-switches |
438 | ; Stock MS-DOS shells cannot redirect stderr; | |
439 | ; `call-process' below sends it to /dev/null, | |
440 | ; so we don't need `2>' even with DOS shells | |
441 | ; which do support stderr redirection. | |
442 | (if (not (fboundp 'start-process)) | |
443 | " %s" | |
444 | " %s 2>/dev/null"))) | |
effdc6a2 | 445 | (flist Man-filter-list)) |
b3435a2f | 446 | (while (and flist (car flist)) |
effdc6a2 | 447 | (let ((pcom (car (car flist))) |
b3435a2f FP |
448 | (pargs (cdr (car flist)))) |
449 | (setq command | |
450 | (concat command " | " pcom " " | |
451 | (mapconcat '(lambda (phrase) | |
452 | (if (not (stringp phrase)) | |
453 | (error "Malformed Man-filter-list")) | |
454 | phrase) | |
455 | pargs " "))) | |
456 | (setq flist (cdr flist)))) | |
effdc6a2 RS |
457 | command)) |
458 | ||
effdc6a2 | 459 | (defun Man-translate-references (ref) |
b3435a2f FP |
460 | "Translates REF from \"chmod(2V)\" to \"2v chmod\" style. |
461 | Leave it as is if already in that style. Possibly downcase and | |
462 | translate the section (see the Man-downcase-section-letters-flag | |
2f2228c0 | 463 | and the Man-section-translations-alist variables)." |
b3435a2f FP |
464 | (let ((name "") |
465 | (section "") | |
466 | (slist Man-section-translations-alist)) | |
effdc6a2 | 467 | (cond |
b3435a2f | 468 | ;; "chmod(2V)" case ? |
2f2228c0 | 469 | ((string-match (concat "^" Man-reference-regexp "$") ref) |
b3435a2f FP |
470 | (setq name (Man-match-substring 1 ref) |
471 | section (Man-match-substring 2 ref))) | |
472 | ;; "2v chmod" case ? | |
2f2228c0 | 473 | ((string-match (concat "^\\(" Man-section-regexp |
b3435a2f FP |
474 | "\\) +\\(" Man-name-regexp "\\)$") ref) |
475 | (setq name (Man-match-substring 2 ref) | |
476 | section (Man-match-substring 1 ref)))) | |
477 | (if (string= name "") | |
478 | ref ; Return the reference as is | |
479 | (if Man-downcase-section-letters-flag | |
480 | (setq section (downcase section))) | |
481 | (while slist | |
482 | (let ((s1 (car (car slist))) | |
483 | (s2 (cdr (car slist)))) | |
484 | (setq slist (cdr slist)) | |
485 | (if Man-downcase-section-letters-flag | |
486 | (setq s1 (downcase s1))) | |
487 | (if (not (string= s1 section)) nil | |
488 | (setq section (if Man-downcase-section-letters-flag | |
489 | (downcase s2) | |
490 | s2) | |
491 | slist nil)))) | |
492 | (concat Man-specified-section-option section " " name)))) | |
493 | ||
effdc6a2 RS |
494 | \f |
495 | ;; ====================================================================== | |
b3435a2f | 496 | ;; default man entry: get word under point |
effdc6a2 | 497 | |
b3435a2f | 498 | (defsubst Man-default-man-entry () |
effdc6a2 RS |
499 | "Make a guess at a default manual entry. |
500 | This guess is based on the text surrounding the cursor, and the | |
c3343fcf | 501 | default section number is selected from `Man-auto-section-alist'." |
f655106b | 502 | (let (word) |
1a20f48d | 503 | (save-excursion |
b3435a2f | 504 | ;; Default man entry title is any word the cursor is on, or if |
f655106b KH |
505 | ;; cursor not on a word, then nearest preceding word. |
506 | (setq word (current-word)) | |
507 | (if (string-match "[._]+$" word) | |
508 | (setq word (substring word 0 (match-beginning 0)))) | |
b3435a2f | 509 | ;; If looking at something like ioctl(2) or brc(1M), include the |
c448c134 | 510 | ;; section number in the returned value. Remove text properties. |
f655106b KH |
511 | (forward-word 1) |
512 | ;; Use `format' here to clear any text props from `word'. | |
513 | (format "%s%s" | |
514 | word | |
515 | (if (looking-at | |
516 | (concat "[ \t]*([ \t]*\\(" Man-section-regexp "\\)[ \t]*)")) | |
517 | (format "(%s)" (Man-match-substring 1)) | |
518 | ""))))) | |
b3435a2f | 519 | |
effdc6a2 RS |
520 | \f |
521 | ;; ====================================================================== | |
b3435a2f | 522 | ;; Top level command and background process sentinel |
1a20f48d | 523 | |
b3435a2f | 524 | ;; For compatibility with older versions. |
cac0b95d | 525 | ;;;###autoload |
b3435a2f | 526 | (defalias 'manual-entry 'man) |
cac0b95d | 527 | |
effdc6a2 | 528 | ;;;###autoload |
98fd7017 | 529 | (defun man (man-args) |
effdc6a2 | 530 | "Get a Un*x manual page and put it in a buffer. |
c3343fcf | 531 | This command is the top-level command in the man package. It runs a Un*x |
effdc6a2 | 532 | command to retrieve and clean a manpage in the background and places the |
c3343fcf | 533 | results in a Man mode (manpage browsing) buffer. See variable |
799ac634 | 534 | `Man-notify-method' for what happens when the buffer is ready. |
98fd7017 | 535 | If a buffer already exists for this man page, it will display immediately." |
b3435a2f | 536 | (interactive |
98fd7017 FP |
537 | (list (let* ((default-entry (Man-default-man-entry)) |
538 | (input (read-string | |
539 | (format "Manual entry%s: " | |
540 | (if (string= default-entry "") | |
541 | "" | |
542 | (format " (default %s)" default-entry)))))) | |
543 | (if (string= input "") | |
544 | (if (string= default-entry "") | |
545 | (error "No man args given") | |
546 | default-entry) | |
547 | input)))) | |
b3435a2f | 548 | |
b3435a2f FP |
549 | ;; Possibly translate the "subject(section)" syntax into the |
550 | ;; "section subject" syntax and possibly downcase the section. | |
551 | (setq man-args (Man-translate-references man-args)) | |
552 | ||
98fd7017 | 553 | (Man-getpage-in-background man-args)) |
b3435a2f | 554 | |
e7bf8d10 KH |
555 | ;;;###autoload |
556 | (defun man-follow (man-args) | |
557 | "Get a Un*x manual page of the item under point and put it in a buffer." | |
558 | (interactive (list (Man-default-man-entry))) | |
559 | (if (or (not man-args) | |
560 | (string= man-args "")) | |
561 | (error "No item under point") | |
562 | (man man-args))) | |
aa228418 | 563 | |
98fd7017 FP |
564 | (defun Man-getpage-in-background (topic) |
565 | "Uses TOPIC to build and fire off the manpage and cleaning command." | |
e660d0db | 566 | (let* ((man-args topic) |
d0aede3f | 567 | (bufname (concat "*Man " man-args "*")) |
effdc6a2 | 568 | (buffer (get-buffer bufname))) |
98fd7017 | 569 | (if buffer |
effdc6a2 | 570 | (Man-notify-when-ready buffer) |
eaf1946c | 571 | (require 'env) |
b3435a2f | 572 | (message "Invoking %s %s in the background" manual-program man-args) |
effdc6a2 | 573 | (setq buffer (generate-new-buffer bufname)) |
75db9a64 KH |
574 | (save-excursion |
575 | (set-buffer buffer) | |
b3435a2f FP |
576 | (setq Man-original-frame (selected-frame)) |
577 | (setq Man-arguments man-args)) | |
0322056b | 578 | (let ((process-environment (copy-sequence process-environment))) |
82c9fe8e RS |
579 | ;; Prevent any attempt to use display terminal fanciness. |
580 | (setenv "TERM" "dumb") | |
0020dbcd EZ |
581 | (if (fboundp 'start-process) |
582 | (set-process-sentinel | |
583 | (start-process manual-program buffer "sh" "-c" | |
584 | (format (Man-build-man-command) man-args)) | |
585 | 'Man-bgproc-sentinel) | |
586 | (progn | |
587 | (let ((exit-status | |
588 | (call-process shell-file-name nil (list buffer nil) nil "-c" | |
589 | (format (Man-build-man-command) man-args))) | |
590 | (msg "")) | |
591 | (or (and (numberp exit-status) | |
592 | (= exit-status 0)) | |
593 | (and (numberp exit-status) | |
594 | (setq msg | |
595 | (format "exited abnormally with code %d" | |
596 | exit-status))) | |
597 | (setq msg exit-status)) | |
598 | (Man-bgproc-sentinel bufname msg)))))))) | |
effdc6a2 RS |
599 | |
600 | (defun Man-notify-when-ready (man-buffer) | |
601 | "Notify the user when MAN-BUFFER is ready. | |
799ac634 | 602 | See the variable `Man-notify-method' for the different notification behaviors." |
c9bf42f9 RS |
603 | (let ((saved-frame (save-excursion |
604 | (set-buffer man-buffer) | |
605 | Man-original-frame))) | |
606 | (cond | |
799ac634 | 607 | ((eq Man-notify-method 'newframe) |
b3435a2f FP |
608 | ;; Since we run asynchronously, perhaps while Emacs is waiting |
609 | ;; for input, we must not leave a different buffer current. We | |
610 | ;; can't rely on the editor command loop to reselect the | |
611 | ;; selected window's buffer. | |
c9bf42f9 RS |
612 | (save-excursion |
613 | (set-buffer man-buffer) | |
614 | (make-frame Man-frame-parameters))) | |
799ac634 | 615 | ((eq Man-notify-method 'pushy) |
b3435a2f | 616 | (switch-to-buffer man-buffer)) |
799ac634 | 617 | ((eq Man-notify-method 'bully) |
c9bf42f9 RS |
618 | (and window-system |
619 | (frame-live-p saved-frame) | |
620 | (select-frame saved-frame)) | |
621 | (pop-to-buffer man-buffer) | |
622 | (delete-other-windows)) | |
799ac634 | 623 | ((eq Man-notify-method 'aggressive) |
c9bf42f9 RS |
624 | (and window-system |
625 | (frame-live-p saved-frame) | |
626 | (select-frame saved-frame)) | |
627 | (pop-to-buffer man-buffer)) | |
799ac634 | 628 | ((eq Man-notify-method 'friendly) |
c9bf42f9 RS |
629 | (and window-system |
630 | (frame-live-p saved-frame) | |
631 | (select-frame saved-frame)) | |
632 | (display-buffer man-buffer 'not-this-window)) | |
799ac634 | 633 | ((eq Man-notify-method 'polite) |
c9bf42f9 | 634 | (beep) |
b3435a2f | 635 | (message "Manual buffer %s is ready" (buffer-name man-buffer))) |
799ac634 | 636 | ((eq Man-notify-method 'quiet) |
b3435a2f | 637 | (message "Manual buffer %s is ready" (buffer-name man-buffer))) |
799ac634 | 638 | ((or (eq Man-notify-method 'meek) |
c9bf42f9 RS |
639 | t) |
640 | (message "")) | |
641 | ))) | |
effdc6a2 | 642 | |
6cb92c3a KH |
643 | (defun Man-softhyphen-to-minus () |
644 | ;; \255 is some kind of dash in Latin-1. | |
645 | (goto-char (point-min)) | |
646 | (if enable-multibyte-characters | |
647 | (while (search-forward "\255" nil t) | |
648 | (if (= (preceding-char) ?\255) | |
649 | (replace-match "-"))) | |
650 | (while (search-forward "\255" nil t) (replace-match "-")))) | |
651 | ||
b3435a2f FP |
652 | (defun Man-fontify-manpage () |
653 | "Convert overstriking and underlining to the correct fonts. | |
654 | Same for the ANSI bold and normal escape sequences." | |
655 | (interactive) | |
656 | (message "Please wait: making up the %s man page..." Man-arguments) | |
c3343fcf | 657 | (goto-char (point-min)) |
b3435a2f FP |
658 | (while (search-forward "\e[1m" nil t) |
659 | (delete-backward-char 4) | |
660 | (put-text-property (point) | |
661 | (progn (if (search-forward "\e[0m" nil 'move) | |
662 | (delete-backward-char 4)) | |
663 | (point)) | |
6e7e47f6 | 664 | 'face Man-overstrike-face)) |
b3435a2f FP |
665 | (goto-char (point-min)) |
666 | (while (search-forward "_\b" nil t) | |
667 | (backward-delete-char 2) | |
6e7e47f6 | 668 | (put-text-property (point) (1+ (point)) 'face Man-underline-face)) |
b3435a2f FP |
669 | (goto-char (point-min)) |
670 | (while (search-forward "\b_" nil t) | |
671 | (backward-delete-char 2) | |
6e7e47f6 | 672 | (put-text-property (1- (point)) (point) 'face Man-underline-face)) |
b3435a2f | 673 | (goto-char (point-min)) |
6024daef FP |
674 | (while (re-search-forward "\\(.\\)\\(\b\\1\\)+" nil t) |
675 | (replace-match "\\1") | |
6e7e47f6 | 676 | (put-text-property (1- (point)) (point) 'face Man-overstrike-face)) |
6024daef | 677 | (goto-char (point-min)) |
f90531cc FP |
678 | (while (re-search-forward "o\b\\+\\|\\+\bo" nil t) |
679 | (replace-match "o") | |
b3435a2f FP |
680 | (put-text-property (1- (point)) (point) 'face 'bold)) |
681 | (goto-char (point-min)) | |
f7046d47 | 682 | (while (re-search-forward "[-|]\\(\b[-|]\\)+" nil t) |
6024daef | 683 | (replace-match "+") |
b3435a2f | 684 | (put-text-property (1- (point)) (point) 'face 'bold)) |
6cb92c3a | 685 | (Man-softhyphen-to-minus) |
b3435a2f FP |
686 | (message "%s man page made up" Man-arguments)) |
687 | ||
688 | (defun Man-cleanup-manpage () | |
689 | "Remove overstriking and underlining from the current buffer." | |
690 | (interactive) | |
f7046d47 FP |
691 | (message "Please wait: cleaning up the %s man page..." |
692 | Man-arguments) | |
9931e1ba | 693 | (if (or (interactive-p) (not Man-sed-script)) |
f7046d47 FP |
694 | (progn |
695 | (goto-char (point-min)) | |
696 | (while (search-forward "_\b" nil t) (backward-delete-char 2)) | |
697 | (goto-char (point-min)) | |
698 | (while (search-forward "\b_" nil t) (backward-delete-char 2)) | |
699 | (goto-char (point-min)) | |
700 | (while (re-search-forward "\\(.\\)\\(\b\\1\\)+" nil t) | |
701 | (replace-match "\\1")) | |
702 | (goto-char (point-min)) | |
703 | (while (re-search-forward "\e\\[[0-9]+m" nil t) (replace-match "")) | |
704 | (goto-char (point-min)) | |
f90531cc | 705 | (while (re-search-forward "o\b\\+\\|\\+\bo" nil t) (replace-match "o")) |
f7046d47 | 706 | )) |
6024daef | 707 | (goto-char (point-min)) |
f7046d47 | 708 | (while (re-search-forward "[-|]\\(\b[-|]\\)+" nil t) (replace-match "+")) |
6cb92c3a | 709 | (Man-softhyphen-to-minus) |
b3435a2f | 710 | (message "%s man page cleaned up" Man-arguments)) |
c3343fcf | 711 | |
effdc6a2 | 712 | (defun Man-bgproc-sentinel (process msg) |
0020dbcd EZ |
713 | "Manpage background process sentinel. |
714 | When manpage command is run asynchronously, PROCESS is the process | |
715 | object for the manpage command; when manpage command is run | |
716 | synchronously, PROCESS is the name of the buffer where the manpage | |
717 | command is run. Second argument MSG is the exit message of the | |
718 | manpage command." | |
719 | (let ((Man-buffer (if (stringp process) (get-buffer process) | |
720 | (process-buffer process))) | |
effdc6a2 | 721 | (delete-buff nil) |
8c79b392 | 722 | (err-mess nil)) |
b3435a2f | 723 | |
effdc6a2 | 724 | (if (null (buffer-name Man-buffer)) ;; deleted buffer |
0020dbcd EZ |
725 | (or (stringp process) |
726 | (set-process-buffer process nil)) | |
b3435a2f FP |
727 | |
728 | (save-excursion | |
729 | (set-buffer Man-buffer) | |
1d56cc39 RS |
730 | (let ((case-fold-search nil)) |
731 | (goto-char (point-min)) | |
732 | (cond ((or (looking-at "No \\(manual \\)*entry for") | |
733 | (looking-at "[^\n]*: nothing appropriate$")) | |
734 | (setq err-mess (buffer-substring (point) | |
735 | (progn | |
736 | (end-of-line) (point))) | |
737 | delete-buff t)) | |
0020dbcd EZ |
738 | ((or (stringp process) |
739 | (not (and (eq (process-status process) 'exit) | |
740 | (= (process-exit-status process) 0)))) | |
741 | (or (zerop (length msg)) | |
742 | (progn | |
743 | (setq err-mess | |
744 | (concat (buffer-name Man-buffer) | |
745 | ": process " | |
746 | (let ((eos (1- (length msg)))) | |
747 | (if (= (aref msg eos) ?\n) | |
748 | (substring msg 0 eos) msg)))) | |
749 | (goto-char (point-max)) | |
750 | (insert (format "\nprocess %s" msg)))) | |
751 | )) | |
1223b6c4 RS |
752 | (if delete-buff |
753 | (kill-buffer Man-buffer) | |
754 | (if Man-fontify-manpage-flag | |
755 | (Man-fontify-manpage) | |
756 | (Man-cleanup-manpage)) | |
757 | (run-hooks 'Man-cooked-hook) | |
758 | (Man-mode) | |
759 | (set-buffer-modified-p nil) | |
0020dbcd | 760 | )) |
1d56cc39 RS |
761 | ;; Restore case-fold-search before calling |
762 | ;; Man-notify-when-ready because it may switch buffers. | |
763 | ||
764 | (if (not delete-buff) | |
765 | (Man-notify-when-ready Man-buffer)) | |
766 | ||
767 | (if err-mess | |
768 | (error err-mess)) | |
769 | )))) | |
effdc6a2 RS |
770 | |
771 | \f | |
772 | ;; ====================================================================== | |
773 | ;; set up manual mode in buffer and build alists | |
774 | ||
775 | (defun Man-mode () | |
c3343fcf | 776 | "A mode for browsing Un*x manual pages. |
effdc6a2 RS |
777 | |
778 | The following man commands are available in the buffer. Try | |
779 | \"\\[describe-key] <key> RET\" for more information: | |
aa228418 | 780 | |
b3435a2f | 781 | \\[man] Prompt to retrieve a new manpage. |
effdc6a2 RS |
782 | \\[Man-follow-manual-reference] Retrieve reference in SEE ALSO section. |
783 | \\[Man-next-manpage] Jump to next manpage in circular list. | |
784 | \\[Man-previous-manpage] Jump to previous manpage in circular list. | |
785 | \\[Man-next-section] Jump to next manpage section. | |
786 | \\[Man-previous-section] Jump to previous manpage section. | |
787 | \\[Man-goto-section] Go to a manpage section. | |
788 | \\[Man-goto-see-also-section] Jumps to the SEE ALSO manpage section. | |
b3435a2f FP |
789 | \\[Man-quit] Deletes the manpage window, bury its buffer. |
790 | \\[Man-kill] Deletes the manpage window, kill its buffer. | |
effdc6a2 RS |
791 | \\[describe-mode] Prints this help text. |
792 | ||
793 | The following variables may be of some use. Try | |
794 | \"\\[describe-variable] <variable-name> RET\" for more information: | |
795 | ||
799ac634 | 796 | Man-notify-method What happens when manpage formatting is done. |
b3435a2f FP |
797 | Man-downcase-section-letters-flag Force section letters to lower case. |
798 | Man-circular-pages-flag Treat multiple manpage list as circular. | |
effdc6a2 RS |
799 | Man-auto-section-alist List of major modes and their section numbers. |
800 | Man-section-translations-alist List of section numbers and their Un*x equiv. | |
801 | Man-filter-list Background manpage filter command. | |
e660d0db RS |
802 | Man-mode-line-format Mode line format for Man mode buffers. |
803 | Man-mode-map Keymap bindings for Man mode buffers. | |
804 | Man-mode-hook Normal hook run on entry to Man mode. | |
effdc6a2 RS |
805 | Man-section-regexp Regexp describing manpage section letters. |
806 | Man-heading-regexp Regexp describing section headers. | |
807 | Man-see-also-regexp Regexp for SEE ALSO section (or your equiv). | |
808 | Man-first-heading-regexp Regexp for first heading on a manpage. | |
809 | Man-reference-regexp Regexp matching a references in SEE ALSO. | |
733155db | 810 | Man-switches Background `man' command switches. |
effdc6a2 RS |
811 | |
812 | The following key bindings are currently in effect in the buffer: | |
813 | \\{Man-mode-map}" | |
814 | (interactive) | |
815 | (setq major-mode 'Man-mode | |
c3343fcf | 816 | mode-name "Man" |
effdc6a2 RS |
817 | buffer-auto-save-file-name nil |
818 | mode-line-format Man-mode-line-format | |
819 | truncate-lines t | |
820 | buffer-read-only t) | |
821 | (buffer-disable-undo (current-buffer)) | |
822 | (auto-fill-mode -1) | |
823 | (use-local-map Man-mode-map) | |
f655106b | 824 | (set-syntax-table man-mode-syntax-table) |
effdc6a2 | 825 | (Man-build-page-list) |
b3435a2f FP |
826 | (Man-strip-page-headers) |
827 | (Man-unindent) | |
526504b8 RS |
828 | (Man-goto-page 1) |
829 | (run-hooks 'Man-mode-hook)) | |
1a20f48d | 830 | |
b3435a2f | 831 | (defsubst Man-build-section-alist () |
effdc6a2 RS |
832 | "Build the association list of manpage sections." |
833 | (setq Man-sections-alist nil) | |
1a20f48d | 834 | (goto-char (point-min)) |
2cd4790e KH |
835 | (let ((case-fold-search nil)) |
836 | (while (re-search-forward Man-heading-regexp (point-max) t) | |
b3435a2f | 837 | (aput 'Man-sections-alist (Man-match-substring 1)) |
2cd4790e | 838 | (forward-line 1)))) |
effdc6a2 | 839 | |
b3435a2f | 840 | (defsubst Man-build-references-alist () |
effdc6a2 RS |
841 | "Build the association list of references (in the SEE ALSO section)." |
842 | (setq Man-refpages-alist nil) | |
843 | (save-excursion | |
844 | (if (Man-find-section Man-see-also-regexp) | |
845 | (let ((start (progn (forward-line 1) (point))) | |
846 | (end (progn | |
847 | (Man-next-section 1) | |
848 | (point))) | |
849 | hyphenated | |
850 | (runningpoint -1)) | |
2cd4790e KH |
851 | (save-restriction |
852 | (narrow-to-region start end) | |
853 | (goto-char (point-min)) | |
854 | (back-to-indentation) | |
855 | (while (and (not (eobp)) (/= (point) runningpoint)) | |
856 | (setq runningpoint (point)) | |
b3435a2f FP |
857 | (if (re-search-forward Man-reference-regexp end t) |
858 | (let* ((word (Man-match-substring 0)) | |
859 | (len (1- (length word)))) | |
860 | (if hyphenated | |
861 | (setq word (concat hyphenated word) | |
862 | hyphenated nil)) | |
863 | (if (= (aref word len) ?-) | |
864 | (setq hyphenated (substring word 0 len)) | |
865 | (aput 'Man-refpages-alist word)))) | |
2cd4790e | 866 | (skip-chars-forward " \t\n,"))))))) |
effdc6a2 | 867 | |
d0aede3f | 868 | (defun Man-build-page-list () |
effdc6a2 RS |
869 | "Build the list of separate manpages in the buffer." |
870 | (setq Man-page-list nil) | |
b3435a2f FP |
871 | (let ((page-start (point-min)) |
872 | (page-end (point-max)) | |
873 | (header "")) | |
874 | (goto-char page-start) | |
875 | ;; (switch-to-buffer (current-buffer))(debug) | |
876 | (while (not (eobp)) | |
877 | (setq header | |
878 | (if (looking-at Man-page-header-regexp) | |
879 | (Man-match-substring 1) | |
880 | nil)) | |
881 | ;; Go past both the current and the next Man-first-heading-regexp | |
882 | (if (re-search-forward Man-first-heading-regexp nil 'move 2) | |
883 | (let ((p (progn (beginning-of-line) (point)))) | |
884 | ;; We assume that the page header is delimited by blank | |
885 | ;; lines and that it contains at most one blank line. So | |
886 | ;; if we back by three blank lines we will be sure to be | |
887 | ;; before the page header but not before the possible | |
888 | ;; previous page header. | |
889 | (search-backward "\n\n" nil t 3) | |
890 | (if (re-search-forward Man-page-header-regexp p 'move) | |
891 | (beginning-of-line)))) | |
892 | (setq page-end (point)) | |
893 | (setq Man-page-list (append Man-page-list | |
894 | (list (list (copy-marker page-start) | |
895 | (copy-marker page-end) | |
896 | header)))) | |
897 | (setq page-start page-end) | |
898 | ))) | |
899 | ||
d0aede3f | 900 | (defun Man-strip-page-headers () |
b3435a2f FP |
901 | "Strip all the page headers but the first from the manpage." |
902 | (let ((buffer-read-only nil) | |
903 | (case-fold-search nil) | |
904 | (page-list Man-page-list) | |
905 | (page ()) | |
906 | (header "")) | |
907 | (while page-list | |
908 | (setq page (car page-list)) | |
909 | (and (nth 2 page) | |
910 | (goto-char (car page)) | |
911 | (re-search-forward Man-first-heading-regexp nil t) | |
912 | (setq header (buffer-substring (car page) (match-beginning 0))) | |
913 | ;; Since the awk script collapses all successive blank | |
914 | ;; lines into one, and since we don't want to get rid of | |
915 | ;; the fast awk script, one must choose between adding | |
916 | ;; spare blank lines between pages when there were none and | |
917 | ;; deleting blank lines at page boundaries when there were | |
918 | ;; some. We choose the first, so we comment the following | |
919 | ;; line. | |
920 | ;; (setq header (concat "\n" header))) | |
921 | (while (search-forward header (nth 1 page) t) | |
922 | (replace-match ""))) | |
923 | (setq page-list (cdr page-list))))) | |
924 | ||
d0aede3f | 925 | (defun Man-unindent () |
b3435a2f FP |
926 | "Delete the leading spaces that indent the manpage." |
927 | (let ((buffer-read-only nil) | |
928 | (case-fold-search nil) | |
929 | (page-list Man-page-list)) | |
930 | (while page-list | |
931 | (let ((page (car page-list)) | |
932 | (indent "") | |
933 | (nindent 0)) | |
934 | (narrow-to-region (car page) (car (cdr page))) | |
935 | (if Man-uses-untabify-flag | |
936 | (untabify (point-min) (point-max))) | |
937 | (if (catch 'unindent | |
938 | (goto-char (point-min)) | |
939 | (if (not (re-search-forward Man-first-heading-regexp nil t)) | |
940 | (throw 'unindent nil)) | |
941 | (beginning-of-line) | |
942 | (setq indent (buffer-substring (point) | |
943 | (progn | |
944 | (skip-chars-forward " ") | |
945 | (point)))) | |
946 | (setq nindent (length indent)) | |
947 | (if (zerop nindent) | |
948 | (throw 'unindent nil)) | |
949 | (setq indent (concat indent "\\|$")) | |
950 | (goto-char (point-min)) | |
951 | (while (not (eobp)) | |
952 | (if (looking-at indent) | |
953 | (forward-line 1) | |
954 | (throw 'unindent nil))) | |
955 | (goto-char (point-min))) | |
956 | (while (not (eobp)) | |
957 | (or (eolp) | |
958 | (delete-char nindent)) | |
959 | (forward-line 1))) | |
960 | (setq page-list (cdr page-list)) | |
2cd4790e | 961 | )))) |
effdc6a2 RS |
962 | |
963 | \f | |
964 | ;; ====================================================================== | |
e660d0db | 965 | ;; Man mode commands |
effdc6a2 RS |
966 | |
967 | (defun Man-next-section (n) | |
968 | "Move point to Nth next section (default 1)." | |
969 | (interactive "p") | |
2cd4790e KH |
970 | (let ((case-fold-search nil)) |
971 | (if (looking-at Man-heading-regexp) | |
972 | (forward-line 1)) | |
973 | (if (re-search-forward Man-heading-regexp (point-max) t n) | |
974 | (beginning-of-line) | |
975 | (goto-char (point-max))))) | |
effdc6a2 RS |
976 | |
977 | (defun Man-previous-section (n) | |
978 | "Move point to Nth previous section (default 1)." | |
979 | (interactive "p") | |
2cd4790e KH |
980 | (let ((case-fold-search nil)) |
981 | (if (looking-at Man-heading-regexp) | |
982 | (forward-line -1)) | |
983 | (if (re-search-backward Man-heading-regexp (point-min) t n) | |
984 | (beginning-of-line) | |
985 | (goto-char (point-min))))) | |
effdc6a2 RS |
986 | |
987 | (defun Man-find-section (section) | |
988 | "Move point to SECTION if it exists, otherwise don't move point. | |
989 | Returns t if section is found, nil otherwise." | |
2cd4790e KH |
990 | (let ((curpos (point)) |
991 | (case-fold-search nil)) | |
effdc6a2 | 992 | (goto-char (point-min)) |
b3435a2f | 993 | (if (re-search-forward (concat "^" section) (point-max) t) |
effdc6a2 RS |
994 | (progn (beginning-of-line) t) |
995 | (goto-char curpos) | |
996 | nil) | |
997 | )) | |
998 | ||
999 | (defun Man-goto-section () | |
1000 | "Query for section to move point to." | |
1001 | (interactive) | |
1002 | (aput 'Man-sections-alist | |
1003 | (let* ((default (aheadsym Man-sections-alist)) | |
1004 | (completion-ignore-case t) | |
1005 | chosen | |
1006 | (prompt (concat "Go to section: (default " default ") "))) | |
1007 | (setq chosen (completing-read prompt Man-sections-alist)) | |
1008 | (if (or (not chosen) | |
1009 | (string= chosen "")) | |
1010 | default | |
1011 | chosen))) | |
1012 | (Man-find-section (aheadsym Man-sections-alist))) | |
1013 | ||
1014 | (defun Man-goto-see-also-section () | |
1015 | "Move point the the \"SEE ALSO\" section. | |
c3343fcf | 1016 | Actually the section moved to is described by `Man-see-also-regexp'." |
effdc6a2 RS |
1017 | (interactive) |
1018 | (if (not (Man-find-section Man-see-also-regexp)) | |
1019 | (error (concat "No " Man-see-also-regexp | |
b3435a2f | 1020 | " section found in the current manpage")))) |
effdc6a2 | 1021 | |
2151a1cf | 1022 | (defun Man-follow-manual-reference (reference) |
effdc6a2 | 1023 | "Get one of the manpages referred to in the \"SEE ALSO\" section. |
2151a1cf | 1024 | Specify which reference to use; default is based on word at point." |
e660d0db RS |
1025 | (interactive |
1026 | (if (not Man-refpages-alist) | |
b3435a2f | 1027 | (error "There are no references in the current man page") |
2151a1cf | 1028 | (list (let* ((default (or |
e660d0db RS |
1029 | (car (all-completions |
1030 | (save-excursion | |
1031 | (skip-syntax-backward "w()") | |
1032 | (skip-chars-forward " \t") | |
1033 | (let ((word (current-word))) | |
1034 | ;; strip a trailing '-': | |
1035 | (if (string-match "-$" word) | |
2cd4790e KH |
1036 | (substring word 0 |
1037 | (match-beginning 0)) | |
e660d0db RS |
1038 | word))) |
1039 | Man-refpages-alist)) | |
1040 | (aheadsym Man-refpages-alist))) | |
1041 | chosen | |
1042 | (prompt (concat "Refer to: (default " default ") "))) | |
1043 | (setq chosen (completing-read prompt Man-refpages-alist nil t)) | |
1044 | (if (or (not chosen) | |
1045 | (string= chosen "")) | |
1046 | default | |
1047 | chosen))))) | |
effdc6a2 | 1048 | (if (not Man-refpages-alist) |
b3435a2f | 1049 | (error "Can't find any references in the current manpage") |
e660d0db | 1050 | (aput 'Man-refpages-alist reference) |
effdc6a2 | 1051 | (Man-getpage-in-background |
2151a1cf | 1052 | (Man-translate-references (aheadsym Man-refpages-alist))))) |
effdc6a2 | 1053 | |
b3435a2f | 1054 | (defun Man-kill () |
effdc6a2 RS |
1055 | "Kill the buffer containing the manpage." |
1056 | (interactive) | |
1057 | (let ((buff (current-buffer))) | |
1058 | (delete-windows-on buff) | |
b3435a2f FP |
1059 | (kill-buffer buff)) |
1060 | (if (and window-system | |
799ac634 | 1061 | (or (eq Man-notify-method 'newframe) |
b3435a2f | 1062 | (and pop-up-frames |
799ac634 | 1063 | (eq Man-notify-method 'bully)))) |
b3435a2f FP |
1064 | (delete-frame))) |
1065 | ||
1066 | (defun Man-quit () | |
1067 | "Bury the buffer containing the manpage." | |
1068 | (interactive) | |
1069 | (let ((buff (current-buffer))) | |
1070 | (delete-windows-on buff) | |
1071 | (bury-buffer buff)) | |
1072 | (if (and window-system | |
799ac634 | 1073 | (or (eq Man-notify-method 'newframe) |
b3435a2f | 1074 | (and pop-up-frames |
799ac634 | 1075 | (eq Man-notify-method 'bully)))) |
b3435a2f | 1076 | (delete-frame))) |
effdc6a2 RS |
1077 | |
1078 | (defun Man-goto-page (page) | |
1079 | "Go to the manual page on page PAGE." | |
1080 | (interactive | |
b3435a2f FP |
1081 | (if (not Man-page-list) |
1082 | (let ((args Man-arguments)) | |
1083 | (kill-buffer (current-buffer)) | |
1084 | (error "Can't find the %s manpage" args)) | |
1085 | (if (= (length Man-page-list) 1) | |
1086 | (error "You're looking at the only manpage in the buffer") | |
1087 | (list (read-minibuffer (format "Go to manpage [1-%d]: " | |
1088 | (length Man-page-list))))))) | |
1089 | (if (not Man-page-list) | |
1090 | (let ((args Man-arguments)) | |
1091 | (kill-buffer (current-buffer)) | |
1092 | (error "Can't find the %s manpage" args))) | |
effdc6a2 RS |
1093 | (if (or (< page 1) |
1094 | (> page (length Man-page-list))) | |
1095 | (error "No manpage %d found" page)) | |
1096 | (let* ((page-range (nth (1- page) Man-page-list)) | |
1097 | (page-start (car page-range)) | |
b3435a2f | 1098 | (page-end (car (cdr page-range)))) |
effdc6a2 | 1099 | (setq Man-current-page page |
b3435a2f | 1100 | Man-page-mode-string (Man-make-page-mode-string)) |
effdc6a2 RS |
1101 | (widen) |
1102 | (goto-char page-start) | |
1103 | (narrow-to-region page-start page-end) | |
1104 | (Man-build-section-alist) | |
b3435a2f | 1105 | (Man-build-references-alist) |
effdc6a2 RS |
1106 | (goto-char (point-min)))) |
1107 | ||
1108 | ||
1109 | (defun Man-next-manpage () | |
1110 | "Find the next manpage entry in the buffer." | |
1111 | (interactive) | |
1112 | (if (= (length Man-page-list) 1) | |
9f2863b2 | 1113 | (error "This is the only manpage in the buffer")) |
effdc6a2 RS |
1114 | (if (< Man-current-page (length Man-page-list)) |
1115 | (Man-goto-page (1+ Man-current-page)) | |
b3435a2f | 1116 | (if Man-circular-pages-flag |
effdc6a2 | 1117 | (Man-goto-page 1) |
9f2863b2 | 1118 | (error "You're looking at the last manpage in the buffer")))) |
effdc6a2 RS |
1119 | |
1120 | (defun Man-previous-manpage () | |
1121 | "Find the previous manpage entry in the buffer." | |
1122 | (interactive) | |
1123 | (if (= (length Man-page-list) 1) | |
9f2863b2 | 1124 | (error "This is the only manpage in the buffer")) |
effdc6a2 RS |
1125 | (if (> Man-current-page 1) |
1126 | (Man-goto-page (1- Man-current-page)) | |
b3435a2f | 1127 | (if Man-circular-pages-flag |
effdc6a2 | 1128 | (Man-goto-page (length Man-page-list)) |
9f2863b2 | 1129 | (error "You're looking at the first manpage in the buffer")))) |
733155db | 1130 | \f |
58ffb6ae RS |
1131 | ;; Init the man package variables, if not already done. |
1132 | (Man-init-defvars) | |
1133 | ||
733155db JB |
1134 | (provide 'man) |
1135 | ||
6594deb0 | 1136 | ;;; man.el ends here |