;;; man.el --- browse UNIX manual pages
-;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 1996, 1997, 2001 Free Software Foundation, Inc.
-;; Author: Barry A. Warsaw <bwarsaw@cen.com>
-;; Last-Modified: $Date: 1994/10/06 10:28:26 $
-;; Version: $Revision: 1.52 $
-;; Keywords: help
-;; Adapted-By: ESR, pot
+;; Author: Barry A. Warsaw <bwarsaw@cen.com>
+;; Maintainer: FSF
+;; Keywords: help
+;; Adapted-By: ESR, pot
;; This file is part of GNU Emacs.
;; 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.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; ALSO references, and other features. See below or do `?' in a
;; manual page buffer for details.
-;; ========== Credits and History ==========
+;; ========== 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
+;; these, but wanted everything in one single package, so I decided
;; to incorporate 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
;; Francesco Potorti` <pot@cnuce.cnr.it> cleaned it up thoroughly,
;; making it faster, more robust and more tolerant of different
-;; systems' man idiosynchrasies.
+;; systems' man idiosyncrasies.
;; ========== Features ==========
;; + Runs "man" in the background and pipes the results through a
;; footer). A different algorithm should be used. It is easy to
;; compute how many blank lines there are before and after the page
;; headers, and after the page footer. But it is possible to compute
-;; the number of blank lines before the page footer by euristhics
+;; the number of blank lines before the page footer by heuristics
;; only. Is it worth doing?
-;; - Allow the Man-reuse-okay-flag to be set to 'always, meaning that all
-;; the manpages should go in the same buffer, where they can be browsed
-;; with M-n and M-p.
+;; - Allow a user option to mean that all the manpages should go in
+;; the same buffer, where they can be browsed with M-n and M-p.
;; - Allow completion on the manpage name when calling man. This
;; requires a reliable list of places where manpages can be found. The
;; drawback would be that if the list is not complete, the user might
;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
;; empty defvars (keep the compiler quiet)
+(defgroup man nil
+ "Browse UNIX manual pages."
+ :prefix "Man-"
+ :group 'help)
+
+
(defvar Man-notify)
(defvar Man-current-page)
(defvar Man-page-list)
-(defvar Man-filter-list)
+(defcustom Man-filter-list nil
+ "*Manpage cleaning filter command phrases.
+This variable contains a 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."
+ :type '(repeat (list (string :tag "Command String")
+ (repeat :inline t
+ (string :tag "Phrase String"))))
+ :group 'man)
+
(defvar Man-original-frame)
(defvar Man-arguments)
-(defvar Man-fontify-manpage-flag)
(defvar Man-sections-alist)
(defvar Man-refpages-alist)
-(defvar Man-uses-untabify-flag)
+(defvar Man-uses-untabify-flag t
+ "Non-nil means use `untabify' instead of `Man-untabify-command'.")
(defvar Man-page-mode-string)
-(defvar Man-sed-script)
+(defvar Man-sed-script nil
+ "Script for sed to nuke backspaces and ANSI codes from manpages.")
;; vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
;; user variables
-(defvar manual-program "man"
- "The name of the program that produces man pages.")
+(defcustom Man-fontify-manpage-flag t
+ "*Non-nil means make up the manpage with fonts."
+ :type 'boolean
+ :group 'man)
+
+(defcustom Man-overstrike-face 'bold
+ "*Face to use when fontifying overstrike."
+ :type 'face
+ :group 'man)
+
+(defcustom Man-underline-face 'underline
+ "*Face to use when fontifying underlining."
+ :type 'face
+ :group 'man)
;; Use the value of the obsolete user option Man-notify, if set.
-(defvar Man-notify-method (if (boundp 'Man-notify) Man-notify 'friendly)
+(defcustom Man-notify-method (if (boundp 'Man-notify) Man-notify 'friendly)
"*Selects the behavior when manpage is ready.
This variable may have one of the following values, where (sf) means
that the frames are switched, so the manpage is displayed in the frame
quiet -- like `polite', but don't beep
meek -- make no indication that the manpage is ready
-Any other value of `Man-notify-method' is equivalent to `meek'.")
+Any other value of `Man-notify-method' is equivalent to `meek'."
+ :type '(radio (const newframe) (const pushy) (const bully)
+ (const aggressive) (const friendly)
+ (const polite) (const quiet) (const meek))
+ :group 'man)
-(defvar Man-frame-parameters nil
- "*Frame parameter list for creating a new frame for a manual page.")
+(defcustom Man-frame-parameters nil
+ "*Frame parameter list for creating a new frame for a manual page."
+ :type 'sexp
+ :group 'man)
-(defvar Man-reuse-okay-flag t
- "*Reuse a manpage buffer if possible.
-If non-nil, and a manpage buffer already exists with the same
-invocation, man just indicates the manpage is ready according to the
-value of `Man-notify-method'. When nil, it always fires off a
-background process,putting the results in a uniquely named buffer.")
-
-(defvar Man-downcase-section-letters-flag t
- "*Letters in sections are converted to lower case.
+(defcustom Man-downcase-section-letters-flag t
+ "*Non-nil means 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.")
+being sent to the man background process."
+ :type 'boolean
+ :group 'man)
-(defvar Man-circular-pages-flag t
- "*If t, the manpage list is treated as circular for traversal.")
+(defcustom Man-circular-pages-flag t
+ "*Non-nil means the manpage list is treated as circular for traversal."
+ :type 'boolean
+ :group 'man)
-(defvar Man-section-translations-alist
+(defcustom Man-section-translations-alist
(list
'("3C++" . "3")
;; Some systems have a real 3x man section, so let's comment this.
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.")
+the associated section number."
+ :type '(repeat (cons (string :tag "Bogus Section")
+ (string :tag "Real Section")))
+ :group 'man)
+
+(defvar manual-program "man"
+ "The name of the program that produces man pages.")
(defvar Man-untabify-command "pr"
- "*Command used for untabifying.")
+ "Command used for untabifying.")
(defvar Man-untabify-command-args (list "-t" "-e")
- "*List of arguments to be passed to Man-untabify-command (which see).")
+ "List of arguments to be passed to `Man-untabify-command' (which see).")
(defvar Man-sed-command "sed"
- "*Command used for processing sed scripts.")
+ "Command used for processing sed scripts.")
(defvar Man-awk-command "awk"
- "*Command used for processing awk scripts.")
-
-(defconst Man-sysv-sed-script "\
-/\b/ { s/_\b//g
- s/\b_//g
- s/o\b+/o/g
- :ovstrk
- s/\\(.\\)\b\\1/\\1/g
- t ovstrk
- }
-/\e\\[[0-9][0-9]*m/ s///g"
- "Script for sysV-like sed to nuke backspaces and ANSI codes from manpages.")
-
-(defconst Man-berkeley-sed-script "\
-/\b/ { s/_\b//g\\
- s/\b_//g\\
- s/o\b+/o/g\\
- :ovstrk\\
- s/\\(.\\)\b\\1/\\1/g\\
- t ovstrk\\
- }\\
-/\e\\[[0-9][0-9]*m/ s///g"
- "Script for berkeley-like sed to nuke backspaces and ANSI codes from manpages.")
-
-(defvar Man-mode-line-format
- '("" mode-line-modified
- mode-line-buffer-identification " "
- global-mode-string
- " " Man-page-mode-string
- " %[(" mode-name mode-line-process minor-mode-alist ")%]----"
- (-3 . "%p") "-%-")
- "*Mode line format for manual mode buffer.")
+ "Command used for processing awk scripts.")
(defvar Man-mode-map nil
- "*Keymap for Man mode.")
+ "Keymap for Man mode.")
(defvar Man-mode-hook nil
- "*Hook run when Man mode is enabled.")
+ "Hook run when Man mode is enabled.")
(defvar Man-cooked-hook nil
- "*Hook run after removing backspaces but before Man-mode processing.")
+ "Hook run after removing backspaces but before `Man-mode' processing.")
(defvar Man-name-regexp "[-a-zA-Z0-9_][-a-zA-Z0-9_.]*"
- "*Regular expression describing the name of a manpage (without section).")
+ "Regular expression describing the name of a manpage (without section).")
(defvar Man-section-regexp "[0-9][a-zA-Z+]*\\|[LNln]"
- "*Regular expression describing a manpage section within parentheses.")
+ "Regular expression describing a manpage section within parentheses.")
(defvar Man-page-header-regexp
- (concat "^[ \t]*\\(" Man-name-regexp
- "(\\(" Man-section-regexp "\\))\\).*\\1")
- "*Regular expression describing the heading of a page.")
+ (if (and (string-match "-solaris2\\." system-configuration)
+ (not (string-match "-solaris2\\.[123435]$" system-configuration)))
+ (concat "^[-A-Za-z0-9_].*[ \t]\\(" Man-name-regexp
+ "(\\(" Man-section-regexp "\\))\\)$")
+ (concat "^[ \t]*\\(" Man-name-regexp
+ "(\\(" Man-section-regexp "\\))\\).*\\1"))
+ "Regular expression describing the heading of a page.")
(defvar Man-heading-regexp "^\\([A-Z][A-Z ]+\\)$"
- "*Regular expression describing a manpage heading entry.")
+ "Regular expression describing a manpage heading entry.")
(defvar Man-see-also-regexp "SEE ALSO"
- "*Regular expression for SEE ALSO heading (or your equivalent).
+ "Regular expression for SEE ALSO heading (or your equivalent).
This regexp should not start with a `^' character.")
(defvar Man-first-heading-regexp "^[ \t]*NAME$\\|^[ \t]*No manual entry fo.*$"
- "*Regular expression describing first heading on a manpage.
+ "Regular expression describing first heading on a manpage.
This regular expression should start with a `^' character.")
(defvar Man-reference-regexp
(concat "\\(" Man-name-regexp "\\)(\\(" Man-section-regexp "\\))")
- "*Regular expression describing a reference in the SEE ALSO section.")
+ "Regular expression describing a reference to another manpage.")
+
+;; This includes the section as an optional part to catch hyphenated
+;; refernces to manpages.
+(defvar Man-hyphenated-reference-regexp
+ (concat "\\(" Man-name-regexp "\\)\\((\\(" Man-section-regexp "\\))\\)?")
+ "Regular expression describing a reference in the SEE ALSO section.")
(defvar Man-switches ""
- "*Switches passed to the man command, as a single string.")
+ "Switches passed to the man command, as a single string.
+
+If you want to be able to see all the manpages for a subject you type,
+make -a one of the switches, if your `man' program supports it.")
-;; Would someone like to provide a good test for being on Solaris?
-;; We could give it its own value of system-type, but that has drawbacks;
-;; it would require changes in lots of places that test system-type.
(defvar Man-specified-section-option
(if (string-match "-solaris[0-9.]*$" system-configuration)
"-s"
"")
- "*Option that indicates a specified a manual section name.")
+ "Option that indicates a specified a manual section name.")
;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
;; end user variables
(setq-default Man-current-page 0)
(setq-default Man-page-mode-string "1 of 1")
+(defconst Man-sysv-sed-script "\
+/\b/ { s/_\b//g
+ s/\b_//g
+ s/o\b+/o/g
+ s/+\bo/o/g
+ :ovstrk
+ s/\\(.\\)\b\\1/\\1/g
+ t ovstrk
+ }
+/\e\\[[0-9][0-9]*m/ s///g"
+ "Script for sysV-like sed to nuke backspaces and ANSI codes from manpages.")
+
+(defconst Man-berkeley-sed-script "\
+/\b/ { s/_\b//g\\
+ s/\b_//g\\
+ s/o\b+/o/g\\
+ s/+\bo/o/g\\
+ :ovstrk\\
+ s/\\(.\\)\b\\1/\\1/g\\
+ t ovstrk\\
+ }\\
+/\e\\[[0-9][0-9]*m/ s///g"
+ "Script for berkeley-like sed to nuke backspaces and ANSI codes from manpages.")
+
+(defvar man-mode-syntax-table
+ (let ((table (copy-syntax-table (standard-syntax-table))))
+ (modify-syntax-entry ?. "w" table)
+ (modify-syntax-entry ?_ "w" table)
+ table)
+ "Syntax table used in Man mode buffers.")
+
(if Man-mode-map
nil
(setq Man-mode-map (make-keymap))
(define-key Man-mode-map "<" 'beginning-of-buffer)
(define-key Man-mode-map "." 'beginning-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 "k" 'Man-kill)
(define-key Man-mode-map "q" 'Man-quit)
(define-key Man-mode-map "m" 'man)
+ (define-key Man-mode-map "\r" 'man-follow)
+ (define-key Man-mode-map [mouse-2] 'man-follow-mouse)
(define-key Man-mode-map "?" 'describe-mode)
)
;; ======================================================================
;; utilities
-(defsubst Man-init-defvars ()
- "Used for initialising variables based on the value of window-system.
-This is necessary if one wants to dump man.el with emacs."
-
- (defvar Man-fontify-manpage-flag t
- "*Make up the manpage with fonts.")
- ;; The following is necessary until fonts are implemented on
- ;; terminals.
- (setq Man-fontify-manpage-flag (and Man-fontify-manpage-flag
- window-system))
-
- (defconst Man-uses-untabify-flag t
- ;; don't use pr: it is buggy
- ;; (or (not (file-readable-p "/etc/passwd"))
- ;; (/= 0 (apply 'call-process
- ;; Man-untabify-command nil nil nil
- ;; (append Man-untabify-command-args
- ;; (list "/etc/passwd")))))
- "When non-nil use `untabify' instead of Man-untabify-command.")
-
- (defconst Man-sed-script
- (cond
- (Man-fontify-manpage-flag
- nil)
- ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script))
- Man-sysv-sed-script)
- ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script))
- Man-berkeley-sed-script)
- (t
- nil))
- "Script for sed to nuke backspaces and ANSI codes from manpages.")
-
- (defvar Man-filter-list
- (list
- (cons
- Man-sed-command
- (list
- (if Man-sed-script
- (concat "-e '" Man-sed-script "'")
- "")
- "-e '/^[\001-\032]*$/d'"
- "-e '/\e[789]/s///g'"
- "-e '/[Nn]o such file or directory/d'"
- "-e '/Reformatting page. Wait/d'"
- "-e '/Reformatting entry. Wait/d'"
- "-e '/^[ \t]*Hewlett-Packard[ \t]Company[ \t]*-[ \t][0-9]*[ \t]-/d'"
- "-e '/^[ \t]*Hewlett-Packard[ \t]*-[ \t][0-9]*[ \t]-.*$/d'"
- "-e '/^[ \t][ \t]*-[ \t][0-9]*[ \t]-[ \t]*Formatted:.*[0-9]$/d'"
- "-e '/^[ \t]*Page[ \t][0-9]*.*(printed[ \t][0-9\\/]*)$/d'"
- "-e '/^Printed[ \t][0-9].*[0-9]$/d'"
- "-e '/^[ \t]*X[ \t]Version[ \t]1[01].*Release[ \t][0-9]/d'"
- "-e '/^[A-za-z].*Last[ \t]change:/d'"
- "-e '/^Sun[ \t]Release[ \t][0-9].*[0-9]$/d'"
- "-e '/[ \t]*Copyright [0-9]* UNIX System Laboratories, Inc.$/d'"
- ))
- (cons
- Man-awk-command
- (list
- "'\n"
- "BEGIN { blankline=0; anonblank=0; }\n"
- "/^$/ { if (anonblank==0) next; }\n"
- "{ anonblank=1; }\n"
- "/^$/ { blankline++; next; }\n"
- "{ if (blankline>0) { print \"\"; blankline=0; } print $0; }\n"
- "'"
- ))
- (if (not Man-uses-untabify-flag)
+(defun Man-init-defvars ()
+ "Used for initialising variables based on display's color support.
+This is necessary if one wants to dump man.el with Emacs."
+
+ ;; Avoid possible error in call-process by using a directory that must exist.
+ (let ((default-directory "/"))
+ (setq Man-sed-script
+ (cond
+ (Man-fontify-manpage-flag
+ nil)
+ ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script))
+ Man-sysv-sed-script)
+ ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script))
+ Man-berkeley-sed-script)
+ (t
+ nil))))
+
+ (setq Man-filter-list
+ ;; Avoid trailing nil which confuses customize.
+ (apply 'list
(cons
- Man-untabify-command
- Man-untabify-command-args)
- ))
- "*Manpage cleaning filter command phrases.
-This variable contains a list of the following form:
-
-'((command-string phrase-string*)*)
-
-Each phrase-string is concatenated onto the command-string to form a
-command filter. The (standard) output (and standard error) of the Un*x
-man command is piped through each command filter in the order the
-commands appear in the association list. The final output is placed in
-the manpage buffer.")
+ Man-sed-command
+ (list
+ (if Man-sed-script
+ (concat "-e '" Man-sed-script "'")
+ "")
+ "-e '/^[\001-\032][\001-\032]*$/d'"
+ "-e '/\e[789]/s///g'"
+ "-e '/Reformatting page. Wait/d'"
+ "-e '/Reformatting entry. Wait/d'"
+ "-e '/^[ \t]*Hewlett-Packard[ \t]Company[ \t]*-[ \t][0-9]*[ \t]-/d'"
+ "-e '/^[ \t]*Hewlett-Packard[ \t]*-[ \t][0-9]*[ \t]-.*$/d'"
+ "-e '/^[ \t][ \t]*-[ \t][0-9]*[ \t]-[ \t]*Formatted:.*[0-9]$/d'"
+ "-e '/^[ \t]*Page[ \t][0-9]*.*(printed[ \t][0-9\\/]*)$/d'"
+ "-e '/^Printed[ \t][0-9].*[0-9]$/d'"
+ "-e '/^[ \t]*X[ \t]Version[ \t]1[01].*Release[ \t][0-9]/d'"
+ "-e '/^[A-Za-z].*Last[ \t]change:/d'"
+ "-e '/^Sun[ \t]Release[ \t][0-9].*[0-9]$/d'"
+ "-e '/[ \t]*Copyright [0-9]* UNIX System Laboratories, Inc.$/d'"
+ "-e '/^[ \t]*Rev\\..*Page [0-9][0-9]*$/d'"
+ ))
+ (cons
+ Man-awk-command
+ (list
+ "'\n"
+ "BEGIN { blankline=0; anonblank=0; }\n"
+ "/^$/ { if (anonblank==0) next; }\n"
+ "{ anonblank=1; }\n"
+ "/^$/ { blankline++; next; }\n"
+ "{ if (blankline>0) { print \"\"; blankline=0; } print $0; }\n"
+ "'"
+ ))
+ (if (not Man-uses-untabify-flag)
+ ;; The outer list will be stripped off by apply.
+ (list (cons
+ Man-untabify-command
+ Man-untabify-command-args))
+ )))
)
-(defsubst Man-match-substring (&optional n string)
- "Return the substring matched by the last search.
-Optional arg N means return the substring matched by the Nth paren
-grouping. Optional second arg STRING means return a substring from
-that string instead of from the current buffer."
- (if (null n) (setq n 0))
- (if string
- (substring string (match-beginning n) (match-end n))
- (buffer-substring (match-beginning n) (match-end n))))
-
(defsubst Man-make-page-mode-string ()
"Formats part of the mode line for Man mode."
(format "%s page %d of %d"
(defsubst Man-build-man-command ()
"Builds the entire background manpage and cleaning command."
- (let ((command (concat manual-program " " Man-switches " %s 2>/dev/null"))
+ (let ((command (concat manual-program " " Man-switches
+ ; Stock MS-DOS shells cannot redirect stderr;
+ ; `call-process' below sends it to /dev/null,
+ ; so we don't need `2>' even with DOS shells
+ ; which do support stderr redirection.
+ (if (not (fboundp 'start-process))
+ " %s"
+ (concat " %s 2>" null-device))))
(flist Man-filter-list))
(while (and flist (car flist))
(let ((pcom (car (car flist)))
(pargs (cdr (car flist))))
(setq command
(concat command " | " pcom " "
- (mapconcat '(lambda (phrase)
- (if (not (stringp phrase))
- (error "Malformed Man-filter-list"))
- phrase)
+ (mapconcat (lambda (phrase)
+ (if (not (stringp phrase))
+ (error "Malformed Man-filter-list"))
+ phrase)
pargs " ")))
(setq flist (cdr flist))))
command))
"Translates REF from \"chmod(2V)\" to \"2v chmod\" style.
Leave it as is if already in that style. Possibly downcase and
translate the section (see the Man-downcase-section-letters-flag
-and the Man-section-translations-alist variables)."
+and the Man-section-translations-alist variables)."
(let ((name "")
(section "")
(slist Man-section-translations-alist))
(cond
;; "chmod(2V)" case ?
- ((string-match (concat Man-reference-regexp "$") ref)
- (setq name (Man-match-substring 1 ref)
- section (Man-match-substring 2 ref)))
+ ((string-match (concat "^" Man-reference-regexp "$") ref)
+ (setq name (match-string 1 ref)
+ section (match-string 2 ref)))
;; "2v chmod" case ?
- ((string-match (concat "\\(" Man-section-regexp
+ ((string-match (concat "^\\(" Man-section-regexp
"\\) +\\(" Man-name-regexp "\\)$") ref)
- (setq name (Man-match-substring 2 ref)
- section (Man-match-substring 1 ref))))
+ (setq name (match-string 2 ref)
+ section (match-string 1 ref))))
(if (string= name "")
ref ; Return the reference as is
(if Man-downcase-section-letters-flag
(defsubst 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)
+This guess is based on the text surrounding the cursor."
+ (let (word)
(save-excursion
-
;; Default man entry title is any word the cursor is on, or if
- ;; cursor not on a word, then nearest preceding word. Cannot
- ;; use the current-word function because it skips the dots.
- (if (not (looking-at "[-a-zA-Z_.]"))
- (skip-chars-backward "^a-zA-Z"))
- (skip-chars-backward "-(a-zA-Z_0-9_.")
- (if (looking-at "(") (forward-char 1))
- (setq default-title
- (buffer-substring
- (point)
- (progn (skip-chars-forward "-a-zA-Z0-9_.") (point))))
-
+ ;; cursor not on a word, then nearest preceding word.
+ (setq word (current-word))
+ (if (string-match "[._]+$" word)
+ (setq word (substring word 0 (match-beginning 0))))
;; If looking at something like ioctl(2) or brc(1M), include the
- ;; section number in the returned value.
- (concat
- default-title
- (if (looking-at
- (concat "[ \t]*([ \t]*\\(" Man-section-regexp "\\)[ \t]*)"))
- (format "(%s)" (Man-match-substring 1)))
- ))))
+ ;; section number in the returned value. Remove text properties.
+ (forward-word 1)
+ ;; Use `format' here to clear any text props from `word'.
+ (format "%s%s"
+ word
+ (if (looking-at
+ (concat "[ \t]*([ \t]*\\(" Man-section-regexp "\\)[ \t]*)"))
+ (format "(%s)" (match-string 1))
+ "")))))
\f
;; ======================================================================
(defalias 'manual-entry 'man)
;;;###autoload
-(defun man (man-args prefix-arg)
+(defun man (man-args)
"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-method' for what happens when the buffer is ready.
-Normally, if a buffer already exists for this man page, it will display
-immediately; either a prefix argument or a nil value to `Man-reuse-okay-flag'
-overrides this and forces the man page to be regenerated."
+If a buffer already exists for this man page, it will display immediately.
+
+To specify a man page from a certain section, type SUBJECT(SECTION) or
+SECTION SUBJECT when prompted for a manual entry. To see manpages from
+all sections related to a subject, put something appropriate into the
+`Man-switches' variable, which see."
(interactive
- (list
- ;; first argument
- (let* ((default-entry (Man-default-man-entry))
- (input (read-string
- (format "Manual entry%s: "
- (if (string= default-entry "")
- ""
- (format " (default %s)" default-entry))))))
- (if (string= input "")
- (if (string= default-entry "")
- (error "No man args given")
- default-entry)
- input))
- ;; second argument
- current-prefix-arg))
-
- ;; Init the man package variables, if not already done.
- (Man-init-defvars)
+ (list (let* ((default-entry (Man-default-man-entry))
+ (input (read-string
+ (format "Manual entry%s: "
+ (if (string= default-entry "")
+ ""
+ (format " (default %s)" default-entry)))
+ nil nil default-entry)))
+ (if (string= input "")
+ (error "No man args given")
+ input))))
;; Possibly translate the "subject(section)" syntax into the
;; "section subject" syntax and possibly downcase the section.
(setq man-args (Man-translate-references man-args))
- (Man-getpage-in-background man-args (consp prefix-arg)))
+ (Man-getpage-in-background man-args))
+;;;###autoload
+(defun man-follow (man-args)
+ "Get a Un*x manual page of the item under point and put it in a buffer."
+ (interactive (list (Man-default-man-entry)))
+ (if (or (not man-args)
+ (string= man-args ""))
+ (error "No item under point")
+ (man man-args)))
+
+(defun man-follow-mouse (e)
+ "Get a Un*x manual page of the item under the mouse and put it in a buffer."
+ (interactive "e")
+ (save-excursion
+ (mouse-set-point e)
+ (call-interactively 'man-follow)))
-(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-flag' is non-nil."
+(defun Man-getpage-in-background (topic)
+ "Use TOPIC to build and fire off the manpage and cleaning command."
(let* ((man-args topic)
(bufname (concat "*Man " man-args "*"))
(buffer (get-buffer bufname)))
- (if (and Man-reuse-okay-flag
- (not override-reuse-p)
- buffer)
+ (if buffer
(Man-notify-when-ready buffer)
(require 'env)
(message "Invoking %s %s in the background" manual-program man-args)
(set-buffer buffer)
(setq Man-original-frame (selected-frame))
(setq Man-arguments man-args))
- (let ((process-environment (copy-sequence process-environment)))
+ (let ((process-environment (copy-sequence process-environment))
+ ;; The following is so Awk script gets \n intact
+ ;; But don't prevent decoding of the outside.
+ (coding-system-for-write 'raw-text-unix)
+ ;; We must decode the output by a coding system that the
+ ;; system's locale suggests in multibyte mode.
+ (coding-system-for-read
+ (if default-enable-multibyte-characters
+ locale-coding-system 'raw-text-unix))
+ ;; Avoid possible error by using a directory that always exists.
+ (default-directory "/"))
;; Prevent any attempt to use display terminal fanciness.
(setenv "TERM" "dumb")
- (set-process-sentinel
- (start-process manual-program buffer "sh" "-c"
- (format (Man-build-man-command) man-args))
- 'Man-bgproc-sentinel))
- )))
+ (if (fboundp 'start-process)
+ (set-process-sentinel
+ (start-process manual-program buffer "sh" "-c"
+ (format (Man-build-man-command) man-args))
+ 'Man-bgproc-sentinel)
+ (progn
+ (let ((exit-status
+ (call-process shell-file-name nil (list buffer nil) nil "-c"
+ (format (Man-build-man-command) man-args)))
+ (msg ""))
+ (or (and (numberp exit-status)
+ (= exit-status 0))
+ (and (numberp exit-status)
+ (setq msg
+ (format "exited abnormally with code %d"
+ exit-status)))
+ (setq msg exit-status))
+ (Man-bgproc-sentinel bufname msg))))))))
(defun Man-notify-when-ready (man-buffer)
"Notify the user when MAN-BUFFER is ready.
;; can't rely on the editor command loop to reselect the
;; selected window's buffer.
(save-excursion
- (set-buffer man-buffer)
- (make-frame Man-frame-parameters)))
+ (let ((frame (make-frame Man-frame-parameters)))
+ (set-window-buffer (frame-selected-window frame) man-buffer)
+ (set-window-dedicated-p (frame-selected-window frame) t)
+ (or (display-multi-frame-p frame)
+ (select-frame frame)))))
((eq Man-notify-method 'pushy)
(switch-to-buffer man-buffer))
((eq Man-notify-method 'bully)
- (and window-system
- (frame-live-p saved-frame)
+ (and (frame-live-p saved-frame)
(select-frame saved-frame))
(pop-to-buffer man-buffer)
(delete-other-windows))
((eq Man-notify-method 'aggressive)
- (and window-system
- (frame-live-p saved-frame)
+ (and (frame-live-p saved-frame)
(select-frame saved-frame))
(pop-to-buffer man-buffer))
((eq Man-notify-method 'friendly)
- (and window-system
- (frame-live-p saved-frame)
+ (and (frame-live-p saved-frame)
(select-frame saved-frame))
(display-buffer man-buffer 'not-this-window))
((eq Man-notify-method 'polite)
(message ""))
)))
+(defun Man-softhyphen-to-minus ()
+ ;; \255 is some kind of dash in Latin-N. Versions of Debian man, at
+ ;; least, emit it even when not in a Latin-N locale.
+ (unless (eq t (compare-strings "latin-" 0 nil
+ current-language-environment 0 6 t))
+ (goto-char (point-min))
+ (let ((str "\255"))
+ (if enable-multibyte-characters
+ (setq str (string-as-multibyte str)))
+ (while (search-forward str nil t) (replace-match "-")))))
+
(defun Man-fontify-manpage ()
"Convert overstriking and underlining to the correct fonts.
Same for the ANSI bold and normal escape sequences."
(progn (if (search-forward "\e[0m" nil 'move)
(delete-backward-char 4))
(point))
- 'face 'bold))
+ 'face Man-overstrike-face))
+ (if (< (buffer-size) (position-bytes (point-max)))
+ ;; Multibyte characters exist.
+ (progn
+ (goto-char (point-min))
+ (while (search-forward "__\b\b" nil t)
+ (backward-delete-char 4)
+ (put-text-property (point) (1+ (point)) 'face Man-underline-face))
+ (goto-char (point-min))
+ (while (search-forward "\b\b__" nil t)
+ (backward-delete-char 4)
+ (put-text-property (1- (point)) (point) 'face Man-underline-face))))
(goto-char (point-min))
(while (search-forward "_\b" nil t)
(backward-delete-char 2)
- (put-text-property (point) (1+ (point)) 'face 'underline))
+ (put-text-property (point) (1+ (point)) 'face Man-underline-face))
(goto-char (point-min))
(while (search-forward "\b_" nil t)
(backward-delete-char 2)
- (put-text-property (1- (point)) (point) 'face 'underline))
+ (put-text-property (1- (point)) (point) 'face Man-underline-face))
(goto-char (point-min))
- (while (re-search-forward "\\(.\\)\\(\b\\1\\)+" nil t)
+ (while (re-search-forward "\\(.\\)\\(\b+\\1\\)+" nil t)
(replace-match "\\1")
- (put-text-property (1- (point)) (point) 'face 'bold))
+ (put-text-property (1- (point)) (point) 'face Man-overstrike-face))
(goto-char (point-min))
- (while (search-forward "o\b+" nil t)
- (backward-delete-char 2)
+ (while (re-search-forward "o\b\\+\\|\\+\bo" nil t)
+ (replace-match "o")
(put-text-property (1- (point)) (point) 'face 'bold))
(goto-char (point-min))
(while (re-search-forward "[-|]\\(\b[-|]\\)+" nil t)
(replace-match "+")
(put-text-property (1- (point)) (point) 'face 'bold))
+ (goto-char (point-min))
+ ;; Try to recognize common forms of cross references.
+ (while (re-search-forward "\\w+([0-9].?)" nil t)
+ (put-text-property (match-beginning 0) (match-end 0)
+ 'mouse-face 'highlight))
+ (Man-softhyphen-to-minus)
(message "%s man page made up" Man-arguments))
(defun Man-cleanup-manpage ()
(interactive)
(message "Please wait: cleaning up the %s man page..."
Man-arguments)
- (or Man-sed-script
+ (if (or (interactive-p) (not Man-sed-script))
(progn
(goto-char (point-min))
(while (search-forward "_\b" nil t) (backward-delete-char 2))
(goto-char (point-min))
(while (re-search-forward "\e\\[[0-9]+m" nil t) (replace-match ""))
(goto-char (point-min))
- (while (search-forward "o\b+" nil t) (backward-delete-char 2))
+ (while (re-search-forward "o\b\\+\\|\\+\bo" nil t) (replace-match "o"))
))
(goto-char (point-min))
(while (re-search-forward "[-|]\\(\b[-|]\\)+" nil t) (replace-match "+"))
+ (Man-softhyphen-to-minus)
(message "%s man page cleaned up" Man-arguments))
(defun Man-bgproc-sentinel (process msg)
- "Manpage background process sentinel."
- (let ((Man-buffer (process-buffer process))
+ "Manpage background process sentinel.
+When manpage command is run asynchronously, PROCESS is the process
+object for the manpage command; when manpage command is run
+synchronously, PROCESS is the name of the buffer where the manpage
+command is run. Second argument MSG is the exit message of the
+manpage command."
+ (let ((Man-buffer (if (stringp process) (get-buffer process)
+ (process-buffer process)))
(delete-buff nil)
(err-mess nil))
(if (null (buffer-name Man-buffer)) ;; deleted buffer
- (set-process-buffer process nil)
+ (or (stringp process)
+ (set-process-buffer process nil))
(save-excursion
(set-buffer Man-buffer)
- (save-match-data
- (let ((case-fold-search nil))
- (goto-char (point-min))
- (cond ((or (looking-at "No \\(manual \\)*entry for")
- (looking-at "[^\n]*: nothing appropriate$"))
- (setq err-mess (buffer-substring (point)
- (progn
- (end-of-line) (point)))
- 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)
- (if Man-fontify-manpage-flag
- (Man-fontify-manpage)
- (Man-cleanup-manpage))
- (run-hooks 'Man-cooked-hook)
- (Man-mode)
- (set-buffer-modified-p nil)
- ))
- ;; Restore case-fold-search before calling
- ;; Man-notify-when-ready because it may switch buffers.
-
- (if (not delete-buff)
- (Man-notify-when-ready Man-buffer))
-
- (if err-mess
- (error err-mess))
- )))))
+ (let ((case-fold-search nil))
+ (goto-char (point-min))
+ (cond ((or (looking-at "No \\(manual \\)*entry for")
+ (looking-at "[^\n]*: nothing appropriate$"))
+ (setq err-mess (buffer-substring (point)
+ (progn
+ (end-of-line) (point)))
+ delete-buff t))
+ ((or (stringp process)
+ (not (and (eq (process-status process) 'exit)
+ (= (process-exit-status process) 0))))
+ (or (zerop (length msg))
+ (progn
+ (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)
+ (if Man-fontify-manpage-flag
+ (Man-fontify-manpage)
+ (Man-cleanup-manpage))
+ (run-hooks 'Man-cooked-hook)
+ (Man-mode)
+ (set-buffer-modified-p nil)
+ ))
+ ;; Restore case-fold-search before calling
+ ;; Man-notify-when-ready because it may switch buffers.
+
+ (if (not delete-buff)
+ (Man-notify-when-ready Man-buffer))
+
+ (if err-mess
+ (error err-mess))
+ ))))
\f
;; ======================================================================
(defun Man-mode ()
"A mode for browsing Un*x manual pages.
-The following man commands are available in the buffer. Try
+The following man commands are available in the buffer. Try
\"\\[describe-key] <key> RET\" for more information:
\\[man] Prompt to retrieve a new manpage.
\\[Man-kill] Deletes the manpage window, kill its buffer.
\\[describe-mode] Prints this help text.
-The following variables may be of some use. Try
+The following variables may be of some use. Try
\"\\[describe-variable] <variable-name> RET\" for more information:
-Man-notify-method What happens when manpage formatting is done.
-Man-reuse-okay-flag Reuse already formatted buffer.
-Man-downcase-section-letters-flag Force section letters to lower case.
-Man-circular-pages-flag Treat multiple manpage list 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-hook Normal hook run on entry to 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.
+`Man-notify-method' What happens when manpage formatting is done.
+`Man-downcase-section-letters-flag' Force section letters to lower case.
+`Man-circular-pages-flag' Treat multiple manpage list as circular.
+`Man-section-translations-alist' List of section numbers and their Un*x equiv.
+`Man-filter-list' Background manpage filter command.
+`Man-mode-map' Keymap bindings for Man mode buffers.
+`Man-mode-hook' Normal hook run on entry to 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}"
(setq major-mode 'Man-mode
mode-name "Man"
buffer-auto-save-file-name nil
- mode-line-format Man-mode-line-format
+ mode-line-buffer-identification
+ (list (default-value 'mode-line-buffer-identification)
+ " {" 'Man-page-mode-string "}")
truncate-lines t
buffer-read-only t)
(buffer-disable-undo (current-buffer))
(auto-fill-mode -1)
(use-local-map Man-mode-map)
+ (set-syntax-table man-mode-syntax-table)
(Man-build-page-list)
(Man-strip-page-headers)
(Man-unindent)
(goto-char (point-min))
(let ((case-fold-search nil))
(while (re-search-forward Man-heading-regexp (point-max) t)
- (aput 'Man-sections-alist (Man-match-substring 1))
+ (aput 'Man-sections-alist (match-string 1))
(forward-line 1))))
(defsubst Man-build-references-alist ()
(back-to-indentation)
(while (and (not (eobp)) (/= (point) runningpoint))
(setq runningpoint (point))
- (if (re-search-forward Man-reference-regexp end t)
- (let* ((word (Man-match-substring 0))
+ (if (re-search-forward Man-hyphenated-reference-regexp end t)
+ (let* ((word (match-string 0))
(len (1- (length word))))
(if hyphenated
(setq word (concat hyphenated word)
- hyphenated nil))
+ hyphenated nil
+ ;; Update len, in case a reference spans
+ ;; more than two lines (paranoia).
+ len (1- (length word))))
(if (= (aref word len) ?-)
- (setq hyphenated (substring word 0 len))
- (aput 'Man-refpages-alist word))))
- (skip-chars-forward " \t\n,")))))))
+ (setq hyphenated (substring word 0 len)))
+ (if (string-match Man-reference-regexp word)
+ (aput 'Man-refpages-alist word))))
+ (skip-chars-forward " \t\n,"))))))
+ (setq Man-refpages-alist (nreverse Man-refpages-alist)))
(defun Man-build-page-list ()
"Build the list of separate manpages in the buffer."
(while (not (eobp))
(setq header
(if (looking-at Man-page-header-regexp)
- (Man-match-substring 1)
+ (match-string 1)
nil))
;; Go past both the current and the next Man-first-heading-regexp
(if (re-search-forward Man-first-heading-regexp nil 'move 2)
(Man-find-section (aheadsym Man-sections-alist)))
(defun Man-goto-see-also-section ()
- "Move point the the \"SEE ALSO\" section.
+ "Move point to 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 the current manpage"))))
-(defun Man-follow-manual-reference (arg reference)
+(defun Man-possibly-hyphenated-word ()
+ "Return a possibly hyphenated word at point.
+If the word starts at the first non-whitespace column, and the
+previous line ends with a hyphen, return the last word on the previous
+line instead. Thus, if a reference to \"tcgetpgrp(3V)\" is hyphenated
+as \"tcgetp-grp(3V)\", and point is at \"grp(3V)\", we return
+\"tcgetp-\" instead of \"grp\"."
+ (save-excursion
+ (skip-syntax-backward "w()")
+ (skip-chars-forward " \t")
+ (let ((beg (point))
+ (word (current-word)))
+ (when (eq beg (save-excursion
+ (back-to-indentation)
+ (point)))
+ (end-of-line 0)
+ (if (eq (char-before) ?-)
+ (setq word (current-word))))
+ word)))
+
+(defun Man-follow-manual-reference (reference)
"Get one of the manpages referred to in the \"SEE ALSO\" section.
-Specify which reference to use; default is based on word at point.
-Prefix argument ARG is passed to `Man-getpage-in-background'."
+Specify which REFERENCE to use; default is based on word at point."
(interactive
(if (not Man-refpages-alist)
(error "There are no references in the current man page")
- (list current-prefix-arg
- (let* ((default (or
- (car (all-completions
- (save-excursion
- (skip-syntax-backward "w()")
- (skip-chars-forward " \t")
- (let ((word (current-word)))
- ;; strip a trailing '-':
- (if (string-match "-$" word)
- (substring word 0
- (match-beginning 0))
- word)))
- Man-refpages-alist))
- (aheadsym Man-refpages-alist)))
+ (list (let* ((default (or
+ (car (all-completions
+ (let ((word (Man-possibly-hyphenated-word)))
+ ;; strip a trailing '-':
+ (if (string-match "-$" word)
+ (substring word 0
+ (match-beginning 0))
+ word))
+ Man-refpages-alist))
+ (aheadsym Man-refpages-alist)))
chosen
(prompt (concat "Refer to: (default " default ") ")))
(setq chosen (completing-read prompt Man-refpages-alist nil t))
(error "Can't find any references in the current manpage")
(aput 'Man-refpages-alist reference)
(Man-getpage-in-background
- (Man-translate-references (aheadsym Man-refpages-alist))
- arg)))
+ (Man-translate-references (aheadsym Man-refpages-alist)))))
(defun Man-kill ()
"Kill the buffer containing the manpage."
(interactive)
- (let ((buff (current-buffer)))
- (delete-windows-on buff)
- (kill-buffer buff))
- (if (and window-system
- (or (eq Man-notify-method 'newframe)
- (and pop-up-frames
- (eq Man-notify-method 'bully))))
- (delete-frame)))
+ (quit-window t))
(defun Man-quit ()
"Bury the buffer containing the manpage."
(interactive)
- (let ((buff (current-buffer)))
- (delete-windows-on buff)
- (bury-buffer buff))
- (if (and window-system
- (or (eq Man-notify-method 'newframe)
- (and pop-up-frames
- (eq Man-notify-method 'bully))))
- (delete-frame)))
+ (quit-window))
(defun Man-goto-page (page)
"Go to the manual page on page PAGE."
(Man-goto-page (length Man-page-list))
(error "You're looking at the first manpage in the buffer"))))
\f
+;; Init the man package variables, if not already done.
+(Man-init-defvars)
+
+(add-to-list 'debug-ignored-errors "^No manpage [0-9]* found$")
+(add-to-list 'debug-ignored-errors "^Can't find the .* manpage$")
+
(provide 'man)
;;; man.el ends here
HCoop / bpt / emacs.git / blobdiff