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- ;;; man.el --- browse UNIX manual pages
-
- ;; Copyright (C) 1993 Free Software Foundation, Inc.
-
- ;; Author: Barry A. Warsaw <bwarsaw@cen.com>
- ;; Last-Modified: 31-Jul-1991
- ;; Version: 1.1
- ;; Keywords: help
- ;; Adapted-By: ESR
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Commentary:
-
- ;; This code provides a function, manual-entry, with which you can
- ;; browse UNIX manual pages. Formatting is done in background so that
- ;; you can continue to use your Emacs while processing is going on.
- ;;
- ;; The mode also supports hypertext-like following of manual page SEE
- ;; ALSO references, and other features. See below or do `?' in a
- ;; manual page buffer for details.
-
- ;; ========== Credits and History ==========
- ;; In mid 1991, several people posted some interesting improvements to
- ;; man.el from the standard emacs 18.57 distribution. I liked many of
- ;; these, but wanted everthing in one single package, so I decided
- ;; to encorporate them into a single manual browsing mode. While
- ;; much of the code here has been rewritten, and some features added,
- ;; these folks deserve lots of credit for providing the initial
- ;; excellent packages on which this one is based.
-
- ;; Nick Duffek <duffek@chaos.cs.brandeis.edu>, posted a very nice
- ;; improvement which retrieved and cleaned the manpages in a
- ;; background process, and which correctly deciphered such options as
- ;; man -k.
-
- ;; Eric Rose <erose@jessica.stanford.edu>, submitted manual.el which
- ;; provided a very nice manual browsing mode.
-
- ;; This package was available as `superman.el' from the LCD package
- ;; for some time before it was accepted into Emacs 19. The entry
- ;; point and some other names have been changed to make it a drop-in
- ;; replacement for the old man.el package.
-
- ;; ========== Features ==========
- ;; + Runs "man" in the background and pipes the results through a
- ;; series of sed and awk scripts so that all retrieving and cleaning
- ;; is done in the background. The cleaning commands are configurable.
- ;; + Syntax is the same as Un*x man
- ;; + Functionality is the same as Un*x man, including "man -k" and
- ;; "man <section>", etc.
- ;; + Provides a manual browsing mode with keybindings for traversing
- ;; the sections of a manpage, following references in the SEE ALSO
- ;; section, and more.
- ;; + Multiple manpages created with the same man command are put into
- ;; a narrowed buffer circular list.
-
- ;;; Code:
-
- (require 'assoc)
-
- ;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
- ;; user variables
-
- (defvar Man-notify 'friendly
- "*Selects the behavior when manpage is ready.
- This variable may have one of the following values:
-
- bully -- make the manpage the current buffer and only window
- aggressive -- make the manpage the current buffer in the other window
- friendly -- display manpage in other window but don't make current
- polite -- don't display manpage, but prints message when ready (beeps)
- quiet -- like `polite', but don't beep
- meek -- make no indication that manpage is ready
-
- Any other value of `Man-notify' is equivalent to `meek'.")
-
- (defvar Man-reuse-okay-p t
- "*Reuse a manpage buffer if possible.
- When t, and a manpage buffer already exists with the same invocation,
- man just indicates the manpage is ready according to the value of
- `Man-notify'. When nil, it always fires off a background process, putting
- the results in a uniquely named buffer.")
-
- (defvar Man-downcase-section-letters-p t
- "*Letters in sections are converted to lower case.
- Some Un*x man commands can't handle uppercase letters in sections, for
- example \"man 2V chmod\", but they are often displayed in the manpage
- with the upper case letter. When this variable is t, the section
- letter (e.g., \"2V\") is converted to lowercase (e.g., \"2v\") before
- being sent to the man background process.")
-
- (defvar Man-circular-pages-p t
- "*If t, the manpage list is treated as circular for traversal.")
-
- ;; I changed this to nil because it is a bad idea
- ;; to fail to recognize things in other sections.
- (defvar Man-auto-section-alist
- nil
- ;; '((c-mode . ("2" "3"))
- ;; (c++-mode . ("2" "3"))
- ;; (c++-c-mode . ("2" "3"))
- ;; (shell-mode . ("1" "8"))
- ;; (cmushell-mode . ("1" "8"))
- ;; (text-mode . "1")
- ;; )
- "*Association list of major modes and their default section numbers.
- List is of the form: (MAJOR-MODE . [SECTION | (SECTION*)]). If current
- major mode is not in list, then the default is to check for manpages
- in all sections.")
-
- (defvar Man-section-translations-alist
- '(("3C++" . "3")
- ("1-UCB" . ""))
- "*Association list of bogus sections to real section numbers.
- Some manpages (e.g. the Sun C++ 2.1 manpages) have section numbers in
- their references which Un*x `man' does not recognize. This
- association list is used to translate those sections, when found, to
- the associated section number.")
-
- (defvar Man-filter-list
- '(("sed "
- (;;"-e 's/.\010//g'"
- "-e '/[Nn]o such file or directory/d'"
- "-e '/Reformatting page. Wait... done/d'"
- "-e '/^\\([A-Z][A-Z.]*([0-9A-Za-z][-0-9A-Za-z+]*)\\).*\\1$/d'"
- "-e '/^[ \\t]*Hewlett-Packard Company[ \\t]*- [0-9]* -.*$/d'"
- "-e '/^[ \\t]*Hewlett-Packard[ \\t]*- [0-9]* -.*$/d'"
- "-e '/^ *Page [0-9]*.*(printed [0-9\\/]*)$/d'"
- "-e '/^Printed [0-9].*[0-9]$/d'"
- "-e '/^[ \\t]*X Version 1[01].*Release [0-9]/d'"
- "-e '/^Sun Microsystems.*Last change:/d'"
- "-e '/^Sun Release [0-9].*[0-9]$/d'"
- "-e '/^\\n$/D'"
- ))
- ("awk '"
- ("BEGIN { blankline=0; anonblank=0; }"
- "/^$/ { if (anonblank==0) next; }"
- "{ anonblank=1; }"
- "/^$/ { blankline++; next; }"
- "{ if (blankline>0) { print \"\"; blankline=0; } print $0; }"
- "'"
- ))
- )
- "*Manpage cleaning filter command phrases.
- This variable contains an association list of the following form:
-
- '((command-string (phrase-string*))*)
-
- Each phrase-string is concatenated onto the command-string to form a
- command filter. The (standard) output (and standard error) of the Un*x
- man command is piped through each command filter in the order the
- commands appear in the association list. The final output is placed in
- the manpage buffer.")
-
- (defvar Man-mode-line-format
- '("" mode-line-modified
- mode-line-buffer-identification " "
- global-mode-string
- Man-page-mode-string
- " %[(" mode-name minor-mode-alist mode-line-process ")%]----"
- (-3 . "%p") "-%-")
- "*Mode line format for manual mode buffer.")
-
- (defvar Man-mode-map nil
- "*Keymap for Man mode.")
-
- (defvar Man-mode-hooks nil
- "*Hooks for Man mode.")
-
- (defvar Man-section-regexp "[0-9][a-zA-Z+]*"
- "*Regular expression describing a manpage section within parentheses.")
-
- (defvar Man-heading-regexp "^[A-Z]"
- "*Regular expression describing a manpage heading entry.")
-
- (defvar Man-see-also-regexp "SEE ALSO"
- "*Regular expression for SEE ALSO heading (or your equivalent).
- This regexp should not start with a `^' character.")
-
- (defvar Man-first-heading-regexp "^NAME$\\|^No manual entry for .*$"
- "*Regular expression describing first heading on a manpage.
- This regular expression should start with a `^' character.")
-
- (defvar Man-reference-regexp "[-a-zA-Z0-9_.]+\\(([0-9][a-zA-Z+]*)\\)?"
- "*Regular expression describing a reference in the SEE ALSO section.")
-
- (defvar Man-switches ""
- "*Switches passed to the man command, as a single string.")
-
- ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- ;; end user variables
-
- ;; other variables and keymap initializations
- (make-variable-buffer-local 'Man-sections-alist)
- (make-variable-buffer-local 'Man-refpages-alist)
- (make-variable-buffer-local 'Man-page-list)
- (make-variable-buffer-local 'Man-current-page)
- (make-variable-buffer-local 'Man-page-mode-string)
-
- (setq-default Man-sections-alist nil)
- (setq-default Man-refpages-alist nil)
- (setq-default Man-page-list nil)
- (setq-default Man-current-page 0)
- (setq-default Man-page-mode-string "1 (of 1)")
-
- (if Man-mode-map
- nil
- (setq Man-mode-map (make-keymap))
- (suppress-keymap Man-mode-map)
- (define-key Man-mode-map " " 'scroll-up)
- (define-key Man-mode-map "\177" 'scroll-down)
- (define-key Man-mode-map "n" 'Man-next-section)
- (define-key Man-mode-map "p" 'Man-previous-section)
- (define-key Man-mode-map "\en" 'Man-next-manpage)
- (define-key Man-mode-map "\ep" 'Man-previous-manpage)
- (define-key Man-mode-map "," 'beginning-of-buffer)
- (define-key Man-mode-map "." 'end-of-buffer)
- (define-key Man-mode-map "r" 'Man-follow-manual-reference)
- (define-key Man-mode-map "t" 'toggle-truncate-lines)
- (define-key Man-mode-map "g" 'Man-goto-section)
- (define-key Man-mode-map "s" 'Man-goto-see-also-section)
- (define-key Man-mode-map "q" 'Man-quit)
- (define-key Man-mode-map "m" 'manual-entry)
- (define-key Man-mode-map "?" 'describe-mode)
- )
-
-
- ;; ======================================================================
- ;; utilities
-
- (defun Man-page-mode-string ()
- "Formats part of the mode line for manual mode."
- (format "%d (of %d)" Man-current-page (length Man-page-list)))
-
- (defun Man-delete-trailing-newline (str)
- (if (string= (substring str (1- (length str))) "\n")
- (substring str 0 (1- (length str)))
- str))
-
- (defun Man-build-man-command ()
- "Builds the entire background manpage and cleaning command."
- (let ((command (concat "man " Man-switches " %s 2>&1"))
- (flist Man-filter-list))
- (while flist
- (let ((pcom (car (car flist)))
- (pargs (car (cdr (car flist)))))
- (setq flist (cdr flist))
- (if (or (not (stringp pcom))
- (not (listp pargs)))
- (error "malformed Man-filter-list."))
- (setq command (concat command " | " pcom
- (mapconcat '(lambda (phrase) phrase)
- pargs " ")))))
- command))
-
- (defun Man-downcase (man-args)
- "Downcases section letters in MAN-ARGS."
- (let ((newargs "")
- (s 0)
- mstart mend
- (len (length man-args)))
- (while (and (< s len)
- (setq mstart (string-match Man-section-regexp man-args s)))
- (setq mend (match-end 0)
- newargs (concat newargs (substring man-args s mstart)))
- (setq newargs (concat newargs (downcase
- (substring man-args mstart mend)))
- s mend))
- (concat newargs (substring man-args s len))))
-
- (defun Man-translate-references (ref)
- "Translates REF from \"chmod(2V)\" to \"2v chmod\" style."
- (if (string-match (concat "(" Man-section-regexp ")$") ref)
- (let* ((word (progn (string-match "(" ref)
- (substring ref 0 (1- (match-end 0)))))
- (section-re (concat "(\\(" Man-section-regexp "\\))"))
- (section (if (string-match section-re ref)
- (substring ref (match-beginning 1) (match-end 1))
- ""))
- (slist Man-section-translations-alist)
- )
- (if Man-downcase-section-letters-p
- (setq section (Man-downcase section)))
- (while slist
- (let ((s1 (car (car slist)))
- (s2 (cdr (car slist))))
- (setq slist (cdr slist))
- (if Man-downcase-section-letters-p
- (setq s1 (Man-downcase s1)))
- (if (not (string= s1 section)) nil
- (setq section (if Man-downcase-section-letters-p
- (Man-downcase s2)
- s2)
- slist nil))))
- (concat section " " word))
- ref))
-
- (defun Man-linepos (&optional position col-p)
- "Return the character position at various line/buffer positions.
- Preserves the state of point, mark, etc. Optional arg POSITION can be one
- of the following symbols:
- bol == beginning of line
- boi == beginning of indentation
- eol == end of line [default]
- bob == beginning of buffer
- eob == end of buffer
-
- Optional arg COL-P, if non-nil, means to return
- the current column instead of character position."
- (let ((tpnt (point))
- rval)
- (cond
- ((eq position 'bol) (beginning-of-line))
- ((eq position 'boi) (back-to-indentation))
- ((eq position 'bob) (goto-char (point-min)))
- ((eq position 'eob) (goto-char (point-max)))
- (t (end-of-line)))
- (setq rval (if col-p (current-column) (point)))
- (goto-char tpnt)
- rval))
-
-
- ;; ======================================================================
- ;; default man entry and get word under point
-
- (defun Man-default-man-args (manword)
- "Build the default man args from MANWORD and buffer's major mode."
- (let ((sections (cdr (assq major-mode Man-auto-section-alist))))
- (cond
- ((null sections) manword)
- ((consp sections)
- (mapconcat (lambda (n) (concat n " " manword)) sections " "))
- (t
- (concat sections " " manword)))))
-
- (defun Man-default-man-entry ()
- "Make a guess at a default manual entry.
- This guess is based on the text surrounding the cursor, and the
- default section number is selected from `Man-auto-section-alist'."
- (let (default-title)
- (save-excursion
-
- ;; Default man entry title is any word the cursor is on,
- ;; or if cursor not on a word, then nearest preceding
- ;; word.
- (and (not (looking-at "[a-zA-Z_]"))
- (skip-chars-backward "^a-zA-Z_"))
- (skip-chars-backward "(a-zA-Z_0-9")
- (and (looking-at "(") (forward-char 1))
- (setq default-title
- (buffer-substring
- (point)
- (progn (skip-chars-forward "a-zA-Z0-9_") (point))))
-
- ;; If looking at something like ioctl(2) or brc(1M), include
- ;; section number in default-entry
- (if (looking-at "[ \t]*([ \t]*[0-9][a-zA-Z]?[ \t]*)")
- (progn (skip-chars-forward "^0-9")
- (setq default-title
- (concat (buffer-substring
- (point)
- (progn
- (skip-chars-forward "0-9a-zA-Z")
- (point)))
- " "
- default-title)))
- (setq default-title (Man-default-man-args default-title)))
- default-title)))
-
-
- ;; ======================================================================
- ;; top level command and background process sentinel
-
- ;;;###autoload
- (defun manual-entry (arg)
- "Get a Un*x manual page and put it in a buffer.
- This command is the top-level command in the man package. It runs a Un*x
- command to retrieve and clean a manpage in the background and places the
- results in a Man mode (manpage browsing) buffer. See variable
- `Man-notify' for what happens when the buffer is ready.
- Universal argument ARG, is passed to `Man-getpage-in-background'."
- (interactive "P")
- (let* ((default-entry (Man-default-man-entry))
- (man-args
- (read-string (format "Manual-entry: %s"
- (if (string= default-entry "") ""
- (format "(default: %s) "
- default-entry))))))
- (and (string= man-args "")
- (if (string= default-entry "")
- (error "No man args given.")
- (setq man-args default-entry)))
-
- ;; Recognize the subject(section) syntax.
- (setq man-args (Man-translate-references man-args))
-
- (if Man-downcase-section-letters-p
- (setq man-args (Man-downcase man-args)))
- (Man-getpage-in-background man-args (consp arg))
- ))
-
- (defun Man-getpage-in-background (TOPIC &optional override-reuse-p)
- "Uses TOPIC to build and fire off the manpage and cleaning command.
- Optional OVERRIDE-REUSE-P, when non-nil, means to
- start a background process even if a buffer already exists and
- `Man-reuse-okay-p' is non-nil."
- (let* ((man-args TOPIC)
- (bufname (concat "*man " man-args "*"))
- (buffer (get-buffer bufname)))
- (if (and Man-reuse-okay-p
- (not override-reuse-p)
- buffer)
- (Man-notify-when-ready buffer)
- (message "Invoking man %s in background..." man-args)
- (setq buffer (generate-new-buffer bufname))
- (let ((process-environment process-environment))
- ;; Prevent any attempt to use display terminal fanciness.
- (setenv "TERM" "dumb")
- (set-process-sentinel
- (start-process "man" buffer "sh" "-c"
- (format (Man-build-man-command) man-args))
- 'Man-bgproc-sentinel))
- )))
-
- (defun Man-notify-when-ready (man-buffer)
- "Notify the user when MAN-BUFFER is ready.
- See the variable `Man-notify' for the different notification behaviors."
- (cond
- ((eq Man-notify 'bully)
- (pop-to-buffer man-buffer)
- (delete-other-windows))
- ((eq Man-notify 'aggressive)
- (pop-to-buffer man-buffer))
- ((eq Man-notify 'friendly)
- (display-buffer man-buffer 'not-this-window))
- ((eq Man-notify 'polite)
- (beep)
- (message "Manual buffer %s is ready." (buffer-name man-buffer)))
- ((eq Man-notify 'quiet)
- (message "Manual buffer %s is ready." (buffer-name man-buffer)))
- ((or (eq Man-notify 'meek)
- t)
- (message ""))
- ))
-
- (defun Man-set-fonts ()
- (goto-char (point-min))
- (while (re-search-forward "\\(.\b.\\)+" nil t)
- (let ((st (match-beginning 0)) (en (match-end 0)))
- (goto-char st)
- (if window-system
- (put-text-property st en 'face
- (if (looking-at "_") 'underline 'bold)))
- (while (and (< (point) en) (looking-at ".\b"))
- (replace-match "") (forward-char 1)))))
-
- (defun Man-bgproc-sentinel (process msg)
- "Manpage background process sentinel."
- (let ((Man-buffer (process-buffer process))
- (delete-buff nil)
- (err-mess nil))
- (if (null (buffer-name Man-buffer)) ;; deleted buffer
- (set-process-buffer process nil)
- (save-excursion
- (set-buffer Man-buffer)
- (goto-char (point-min))
- (cond ((or (looking-at "No \\(manual \\)*entry for")
- (looking-at "[^\n]*: nothing appropriate$"))
- (setq err-mess (buffer-substring (point) (Man-linepos 'eol))
- delete-buff t)
- )
- ((not (and (eq (process-status process) 'exit)
- (= (process-exit-status process) 0)))
- (setq err-mess
- (concat (buffer-name Man-buffer)
- ": process "
- (let ((eos (1- (length msg))))
- (if (= (aref msg eos) ?\n)
- (substring msg 0 eos) msg))))
- (goto-char (point-max))
- (insert (format "\nprocess %s" msg))
- )))
- (if delete-buff
- (kill-buffer Man-buffer)
- (save-window-excursion
- (save-excursion
- (set-buffer Man-buffer)
- (Man-set-fonts)
- (Man-mode)
- (set-buffer-modified-p nil)))
- (Man-notify-when-ready Man-buffer))
-
- (if err-mess
- (error err-mess))
- )))
-
-
- ;; ======================================================================
- ;; set up manual mode in buffer and build alists
-
- (defun Man-mode ()
- "A mode for browsing Un*x manual pages.
-
- The following man commands are available in the buffer. Try
- \"\\[describe-key] <key> RET\" for more information:
-
- \\[manual-entry] Prompt to retrieve a new manpage.
- \\[Man-follow-manual-reference] Retrieve reference in SEE ALSO section.
- \\[Man-next-manpage] Jump to next manpage in circular list.
- \\[Man-previous-manpage] Jump to previous manpage in circular list.
- \\[Man-next-section] Jump to next manpage section.
- \\[Man-previous-section] Jump to previous manpage section.
- \\[Man-goto-section] Go to a manpage section.
- \\[Man-goto-see-also-section] Jumps to the SEE ALSO manpage section.
- \\[Man-quit] Deletes the manpage, its buffer, and window.
- \\[describe-mode] Prints this help text.
-
- The following variables may be of some use. Try
- \"\\[describe-variable] <variable-name> RET\" for more information:
-
- Man-notify What happens when manpage formatting is done.
- Man-reuse-okay-p Okay to reuse already formatted buffer?
- Man-downcase-section-letters-p Force section letters to lower case?
- Man-circular-pages-p Multiple manpage list treated as circular?
- Man-auto-section-alist List of major modes and their section numbers.
- Man-section-translations-alist List of section numbers and their Un*x equiv.
- Man-filter-list Background manpage filter command.
- Man-mode-line-format Mode line format for Man-mode buffers.
- Man-mode-map Keymap bindings for Man-mode buffers.
- Man-mode-hooks Hooks for Man-mode.
- Man-section-regexp Regexp describing manpage section letters.
- Man-heading-regexp Regexp describing section headers.
- Man-see-also-regexp Regexp for SEE ALSO section (or your equiv).
- Man-first-heading-regexp Regexp for first heading on a manpage.
- Man-reference-regexp Regexp matching a references in SEE ALSO.
- Man-switches Background `man' command switches.
-
- The following key bindings are currently in effect in the buffer:
- \\{Man-mode-map}"
- (interactive)
- (setq major-mode 'Man-mode
- mode-name "Man"
- buffer-auto-save-file-name nil
- mode-line-format Man-mode-line-format
- truncate-lines t
- buffer-read-only t)
- (buffer-disable-undo (current-buffer))
- (auto-fill-mode -1)
- (use-local-map Man-mode-map)
- (goto-char (point-min))
- (Man-build-page-list)
- (Man-goto-page 1)
- (run-hooks 'Man-mode-hook))
-
- (defun Man-build-section-alist ()
- "Build the association list of manpage sections."
- (setq Man-sections-alist nil)
- (goto-char (point-min))
- (while (re-search-forward Man-heading-regexp (point-max) t)
- (aput 'Man-sections-alist
- (buffer-substring (Man-linepos 'bol) (Man-linepos)))
- (forward-line 1)
- ))
-
- (defun Man-build-references-alist ()
- "Build the association list of references (in the SEE ALSO section)."
- (setq Man-refpages-alist nil)
- (save-excursion
- (if (Man-find-section Man-see-also-regexp)
- (let ((start (progn (forward-line 1) (point)))
- (end (progn
- (Man-next-section 1)
- (point)))
- hyphenated
- (runningpoint -1))
- (narrow-to-region start end)
- (goto-char (point-min))
- (back-to-indentation)
- (while (and (not (eobp)) (/= (point) runningpoint))
- (setq runningpoint (point))
- (let* ((bow (point))
- (eow (re-search-forward Man-reference-regexp end t))
- (word (buffer-substring bow (match-end 0)))
- (len (1- (length word))))
- (if (not eow) nil
- (if hyphenated
- (setq word (concat hyphenated word)
- hyphenated nil))
- (if (= (aref word len) ?-)
- (setq hyphenated (substring word 0 len))
- (aput 'Man-refpages-alist word))))
- (skip-chars-forward " \t\n,"))
- ))))
-
- (defun Man-build-page-list ()
- "Build the list of separate manpages in the buffer."
- (setq Man-page-list nil)
- (save-excursion
- (let ((page-start (Man-linepos 'bob))
- (page-end (Man-linepos 'eob))
- (regexp Man-first-heading-regexp))
- (goto-char (point-min))
- (re-search-forward regexp (point-max) t)
- (while (not (eobp))
- (if (re-search-forward regexp (point-max) t)
- (progn
- (setq page-end (Man-linepos 'bol))
- (end-of-line))
- (goto-char (point-max))
- (setq page-end (point)))
- (setq Man-page-list (append Man-page-list
- (list (cons page-start page-end)))
- page-start page-end)
- ))))
-
-
- ;; ======================================================================
- ;; Man-mode commands
-
- (defun Man-next-section (n)
- "Move point to Nth next section (default 1)."
- (interactive "p")
- (if (looking-at Man-heading-regexp)
- (forward-line 1))
- (if (re-search-forward Man-heading-regexp (point-max) t n)
- (beginning-of-line)
- (goto-char (point-max))))
-
- (defun Man-previous-section (n)
- "Move point to Nth previous section (default 1)."
- (interactive "p")
- (if (looking-at Man-heading-regexp)
- (forward-line -1))
- (if (re-search-backward Man-heading-regexp (point-min) t n)
- (beginning-of-line)
- (goto-char (point-min))))
-
- (defun Man-find-section (section)
- "Move point to SECTION if it exists, otherwise don't move point.
- Returns t if section is found, nil otherwise."
- (let ((curpos (point)))
- (goto-char (point-min))
- (if (re-search-forward (concat "^" section) (point-max) t)
- (progn (beginning-of-line) t)
- (goto-char curpos)
- nil)
- ))
-
- (defun Man-goto-section ()
- "Query for section to move point to."
- (interactive)
- (aput 'Man-sections-alist
- (let* ((default (aheadsym Man-sections-alist))
- (completion-ignore-case t)
- chosen
- (prompt (concat "Go to section: (default " default ") ")))
- (setq chosen (completing-read prompt Man-sections-alist))
- (if (or (not chosen)
- (string= chosen ""))
- default
- chosen)))
- (Man-find-section (aheadsym Man-sections-alist)))
-
- (defun Man-goto-see-also-section ()
- "Move point the the \"SEE ALSO\" section.
- Actually the section moved to is described by `Man-see-also-regexp'."
- (interactive)
- (if (not (Man-find-section Man-see-also-regexp))
- (error (concat "No " Man-see-also-regexp
- " section found in current manpage."))))
-
- (defun Man-follow-manual-reference (arg)
- "Get one of the manpages referred to in the \"SEE ALSO\" section.
- Queries you for the page to retrieve. Of course it does this in the
- background. Universal argument ARG is passed to `Man-getpage-in-background'."
- (interactive "P")
- (if (not Man-refpages-alist)
- (error (concat "No references found in current manpage."))
- (aput 'Man-refpages-alist
- (let* ((default (aheadsym Man-refpages-alist))
- chosen
- (prompt (concat "Refer to: (default " default ") ")))
- (setq chosen (completing-read prompt Man-refpages-alist nil t))
- (if (or (not chosen)
- (string= chosen ""))
- default
- chosen)))
- (Man-getpage-in-background
- (Man-translate-references (aheadsym Man-refpages-alist))
- (consp arg))))
-
- (defun Man-quit ()
- "Kill the buffer containing the manpage."
- (interactive)
- (let ((buff (current-buffer)))
- (delete-windows-on buff)
- (kill-buffer buff)))
-
- (defun Man-goto-page (page)
- "Go to the manual page on page PAGE."
- (interactive
- (if (not Man-page-list)
- (error "You're looking at the only manpage in the buffer.")
- (format "nGo to manpage [1-%d]: " (length Man-page-list))))
- (if (or (< page 1)
- (> page (length Man-page-list)))
- (error "No manpage %d found" page))
- (let* ((page-range (nth (1- page) Man-page-list))
- (page-start (car page-range))
- (page-end (cdr page-range)))
- (setq Man-current-page page
- Man-page-mode-string (Man-page-mode-string))
- (widen)
- (goto-char page-start)
- (narrow-to-region page-start page-end)
- (Man-build-section-alist)
- ;; Don't let bugs in Man-build-references-alist
- ;; interfere with ordinary use of this package.
- (condition-case nil
- (Man-build-references-alist)
- (error))
- (widen)
- (narrow-to-region page-start page-end)
- (goto-char (point-min))))
-
-
- (defun Man-next-manpage ()
- "Find the next manpage entry in the buffer."
- (interactive)
- (if (= (length Man-page-list) 1)
- (error "This is the only manpage in the buffer."))
- (if (< Man-current-page (length Man-page-list))
- (Man-goto-page (1+ Man-current-page))
- (if Man-circular-pages-p
- (Man-goto-page 1)
- (error "You're looking at the last manpage in the buffer."))))
-
- (defun Man-previous-manpage ()
- "Find the previous manpage entry in the buffer."
- (interactive)
- (if (= (length Man-page-list) 1)
- (error "This is the only manpage in the buffer."))
- (if (> Man-current-page 1)
- (Man-goto-page (1- Man-current-page))
- (if Man-circular-pages-p
- (Man-goto-page (length Man-page-list))
- (error "You're looking at the first manpage in the buffer."))))
-
- (provide 'man)
-
- ;;; man.el ends here
-