;;; man.el --- browse UNIX manual pages
-;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
;; Author: Barry A. Warsaw <bwarsaw@cen.com>
-;; Last-Modified: $Date: 1994/10/24 15:34:50 $
-;; Version: $Revision: 1.55 $
;; Keywords: help
;; Adapted-By: ESR, pot
;; 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:
;; ========== 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
;; headers, and after the page footer. But it is possible to compute
;; the number of blank lines before the page footer by euristhics
;; 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
(defvar Man-notify)
(defvar Man-current-page)
(defvar Man-page-list)
-(defvar Man-filter-list)
+(defvar 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.")
+
(defvar Man-original-frame)
(defvar Man-arguments)
(defvar Man-sections-alist)
(defvar Man-refpages-alist)
-(defvar Man-uses-untabify-flag)
+(defvar Man-uses-untabify-flag t
+ "When non-nil 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
"*Face to use when fontifying overstrike.")
(defvar Man-underline-face 'underline
- "*Face to use when fontifying underlinining.")
+ "*Face to use when fontifying underlining.")
;; Use the value of the obsolete user option Man-notify, if set.
(defvar Man-notify-method (if (boundp 'Man-notify) Man-notify 'friendly)
(defvar Man-frame-parameters nil
"*Frame parameter list for creating a new frame for a manual page.")
-(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.
Some Un*x man commands can't handle uppercase letters in sections, for
/\b/ { s/_\b//g
s/\b_//g
s/o\b+/o/g
+ s/+\bo/o/g
:ovstrk
s/\\(.\\)\b\\1/\\1/g
t ovstrk
/\b/ { s/_\b//g\\
s/\b_//g\\
s/o\b+/o/g\\
+ s/+\bo/o/g\\
:ovstrk\\
s/\\(.\\)\b\\1/\\1/g\\
t ovstrk\\
(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)
;; ======================================================================
;; utilities
-(defsubst Man-init-defvars ()
+(defun 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."
(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][\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 $0; }\n"
- "'"
- ))
- (if (not Man-uses-untabify-flag)
+ (setq Man-sed-script
+ (cond
+ (Man-fontify-manpage-flag
+ nil)
+ ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script))
+ Man-sysv-sed-script)
+ ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script))
+ Man-berkeley-sed-script)
+ (t
+ nil)))
+
+ (setq Man-filter-list
+ (list
(cons
- Man-untabify-command
- Man-untabify-command-args)
- ))
- "*Manpage cleaning filter command phrases.
-This variable contains a list of the following form:
-
-'((command-string phrase-string*)*)
-
-Each phrase-string is concatenated onto the command-string to form a
-command filter. The (standard) output (and standard error) of the Un*x
-man command is piped through each command filter in the order the
-commands appear in the association list. The final output is placed in
-the manpage buffer.")
+ Man-sed-command
+ (list
+ (if Man-sed-script
+ (concat "-e '" Man-sed-script "'")
+ "")
+ "-e '/^[\001-\032][\001-\032]*$/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 $0; }\n"
+ "'"
+ ))
+ (if (not Man-uses-untabify-flag)
+ (cons
+ Man-untabify-command
+ Man-untabify-command-args)
+ )))
)
(defsubst Man-match-substring (&optional n string)
"Translates REF from \"chmod(2V)\" to \"2v chmod\" style.
Leave it as is if already in that style. Possibly downcase and
translate the section (see the Man-downcase-section-letters-flag
-and the Man-section-translations-alist variables)."
+and the Man-section-translations-alist variables)."
(let ((name "")
(section "")
(slist Man-section-translations-alist))
(cond
;; "chmod(2V)" case ?
- ((string-match (concat Man-reference-regexp "$") ref)
+ ((string-match (concat "^" Man-reference-regexp "$") ref)
(setq name (Man-match-substring 1 ref)
section (Man-match-substring 2 ref)))
;; "2v chmod" case ?
- ((string-match (concat "\\(" Man-section-regexp
+ ((string-match (concat "^\\(" Man-section-regexp
"\\) +\\(" Man-name-regexp "\\)$") ref)
(setq name (Man-match-substring 2 ref)
section (Man-match-substring 1 ref))))
(progn (skip-chars-forward "-a-zA-Z0-9_.") (point))))
;; 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.
+ (let ((result (concat
+ default-title
+ (if (looking-at
+ (concat "[ \t]*([ \t]*\\("
+ Man-section-regexp "\\)[ \t]*)"))
+ (format "(%s)" (Man-match-substring 1))))))
+ (set-text-properties 0 (length result) nil result)
+ result))))
\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."
(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))))))
+ (if (string= input "")
+ (if (string= default-entry "")
+ (error "No man args given")
+ default-entry)
+ 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))
-(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)
+ "Uses 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-process-sentinel
(start-process manual-program buffer "sh" "-c"
(format (Man-build-man-command) man-args))
- 'Man-bgproc-sentinel))
- )))
+ 'Man-bgproc-sentinel)))))
(defun Man-notify-when-ready (man-buffer)
"Notify the user when MAN-BUFFER is ready.
(replace-match "\\1")
(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))
+ ;; \255 is some kind of dash in Latin-1.
+ (goto-char (point-min))
+ (while (search-forward "\255" nil t) (replace-match "-"))
(message "%s man page made up" Man-arguments))
(defun Man-cleanup-manpage ()
(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 "+"))
+ ;; \255 is some kind of dash in Latin-1.
+ (goto-char (point-min))
+ (while (search-forward "\255" nil t) (replace-match "-"))
(message "%s man page cleaned up" Man-arguments))
(defun Man-bgproc-sentinel (process msg)
(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))
+ ((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))
+ ))))
\f
;; ======================================================================
\"\\[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.
(error (concat "No " Man-see-also-regexp
" section found in the current manpage"))))
-(defun Man-follow-manual-reference (arg reference)
+(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
+ (list (let* ((default (or
(car (all-completions
(save-excursion
(skip-syntax-backward "w()")
(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."
(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)
+
(provide 'man)
;;; man.el ends here