;; An older version of this was known as libc.el.
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003,
-;; 2004, 2005, 2006 Free Software Foundation, Inc.
+;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>
;; (did not show signs of life (Nov 2001) -stef)
;; 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)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
(apply 'info-lookup-add-help* nil arg))
(defun info-lookup-maybe-add-help (&rest arg)
- "Add a help specification iff none is defined.
+ "Add a help specification if none is defined.
See the documentation of the function `info-lookup-add-help'
for more details."
(apply 'info-lookup-add-help* t arg))
;;;###autoload
(defun info-lookup-symbol (symbol &optional mode)
"Display the definition of SYMBOL, as found in the relevant manual.
-When this command is called interactively, it reads SYMBOL from the minibuffer.
-In the minibuffer, use M-n to yank the default argument value
-into the minibuffer so you can edit it.
-The default symbol is the one found at point.
+When this command is called interactively, it reads SYMBOL from the
+minibuffer. In the minibuffer, use M-n to yank the default argument
+value into the minibuffer so you can edit it. The default symbol is the
+one found at point.
With prefix arg a query for the symbol help mode is offered."
(interactive
suffix (nth 3 (car doc-spec)))
(when (condition-case error-data
(progn
- (Info-goto-node node)
- (setq doc-found t))
+ ;; Don't need Index menu fontifications here, and
+ ;; they slow down the lookup.
+ (let (Info-fontify-maximum-menu-size)
+ (Info-goto-node node)
+ (setq doc-found t)))
(error
(message "Cannot access Info node %s" node)
(sit-for 1)
(let ((doc-spec (info-lookup->doc-spec topic mode))
(regexp (concat "^\\(" (info-lookup->regexp topic mode)
"\\)\\([ \t].*\\)?$"))
+ Info-fontify-maximum-menu-size
node trans entry item prefix result doc-found
(buffer (get-buffer-create " temp-info-look")))
(with-current-buffer buffer
(concat prefix name))))
(error nil)))
+(defun info-lookup-guess-custom-symbol ()
+ "Get symbol at point in custom buffers."
+ (condition-case nil
+ (save-excursion
+ (let ((case-fold-search t)
+ (ignored-chars "][()`',:.\" \t\n")
+ (significant-chars "^][()`',:.\" \t\n")
+ beg end)
+ (cond
+ ((and (memq (get-char-property (point) 'face)
+ '(custom-variable-tag custom-variable-tag-face))
+ (setq beg (previous-single-char-property-change
+ (point) 'face nil (line-beginning-position)))
+ (setq end (next-single-char-property-change
+ (point) 'face nil (line-end-position)))
+ (> end beg))
+ (subst-char-in-string
+ ?\s ?\- (buffer-substring-no-properties beg end)))
+ ((or (and (looking-at (concat "[" significant-chars "]"))
+ (save-excursion
+ (skip-chars-backward significant-chars)
+ (setq beg (point)))
+ (skip-chars-forward significant-chars)
+ (setq end (point))
+ (> end beg))
+ (and (looking-at "[ \t\n]")
+ (looking-back (concat "[" significant-chars "]"))
+ (setq end (point))
+ (skip-chars-backward significant-chars)
+ (setq beg (point))
+ (> end beg))
+ (and (skip-chars-forward ignored-chars)
+ (setq beg (point))
+ (skip-chars-forward significant-chars)
+ (setq end (point))
+ (> end beg)))
+ (buffer-substring-no-properties beg end)))))
+ (error nil)))
+
;;;###autoload
(defun info-complete-symbol (&optional mode)
"Perform completion on symbol preceding point."
(info-lookup-maybe-add-help
:mode 'emacs-lisp-mode
- :regexp "[^][()'\" \t\n]+"
+ :regexp "[^][()`',\" \t\n]+"
:doc-spec '(;; Commands with key sequences appear in nodes as `foo' and
;; those without as `M-x foo'.
("(emacs)Command Index" nil "`\\(M-x[ \t\n]+\\)?" "'")
(info-lookup-maybe-add-help
:mode 'lisp-interaction-mode
- :regexp "[^][()'\" \t\n]+"
+ :regexp "[^][()`',\" \t\n]+"
:parse-rule 'ignore
:other-modes '(emacs-lisp-mode))
(info-lookup-maybe-add-help
:mode 'lisp-mode
- :regexp "[^()'\" \t\n]+"
+ :regexp "[^()`',\" \t\n]+"
:parse-rule 'ignore
:other-modes '(emacs-lisp-mode))
(info-lookup-maybe-add-help
:mode 'maxima-mode
:ignore-case t
- :regexp "[a-zA-Z_%]+"
+ :regexp "[a-zA-Z0-9_%]+"
:doc-spec '( ("(maxima)Function and Variable Index" nil
"^ -+ [^:]+:[ ]+\\(\\[[^=]*=[ ]+\\)?" nil)))
(info-lookup-maybe-add-help
:mode 'inferior-maxima-mode
+ :regexp "[a-zA-Z0-9_%]+"
:other-modes '(maxima-mode))
;; coreutils and bash builtins overlap in places, eg. printf, so there's a
;; This gets functions in evaluated classes. Other
;; possible patterns don't seem to work too well.
"`" "(")))
+
+(info-lookup-maybe-add-help
+ :mode 'custom-mode
+ :ignore-case t
+ :regexp "[^][()`',:\" \t\n]+"
+ :parse-rule 'info-lookup-guess-custom-symbol
+ :other-modes '(emacs-lisp-mode))
+
+(info-lookup-maybe-add-help
+ :mode 'help-mode
+ :regexp "[^][()`',:\" \t\n]+"
+ :other-modes '(emacs-lisp-mode))
\f
(provide 'info-look)
HCoop / bpt / emacs.git / blobdiff