-;;; info-look.el --- major-mode-sensitive Info index lookup facility.
+;;; info-look.el --- major-mode-sensitive Info index lookup facility
;; An older version of this was known as libc.el.
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+;; Copyright (C) 1995,96,97,98,99,2001 Free Software Foundation, Inc.
-;; Author: Ralph Schleicher <rs@purple.UL.BaWue.DE>
-;; Maintainers: FSF (unless Schleicher can be found)
+;; Author: Ralph Schleicher <rs@nunatak.allgaeu.org>
+;; (did not show signs of life (Nov 2001) -stef)
;; Keywords: help languages
;; This file is part of GNU Emacs.
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
+;;; Commentary:
+
+;; Really cool code to lookup info indexes.
+;; Try especially info-lookup-symbol (aka C-h TAB).
+
;;; Code:
(require 'info)
"Overlay object used for highlighting.")
(defcustom info-lookup-file-name-alist
- '(("\\`configure\\.in\\'" . autoconf-mode)
- ("\\`aclocal\\.m4\\'" . autoconf-mode)
- ("\\`acsite\\.m4\\'" . autoconf-mode)
- ("\\`acinclude\\.m4\\'" . autoconf-mode))
+ '(("\\`ac\\(local\\|site\\|include\\)\\.m4\\'" . autoconf-mode))
"Alist of file names handled specially.
List elements are cons cells of the form
(defsubst info-lookup->other-modes (topic mode)
(nth 5 (info-lookup->mode-value topic mode)))
-(eval-and-compile
- (mapcar (lambda (keyword)
- (or (boundp keyword)
- (set keyword keyword)))
- '(:topic :mode :regexp :ignore-case
- :doc-spec :parse-rule :other-modes)))
-
(defun info-lookup-add-help (&rest arg)
"Add or update a help specification.
Function arguments are one or more options of the form
(apply 'info-lookup-add-help* nil arg))
(defun info-lookup-maybe-add-help (&rest arg)
- "Add a help specification iff no one is defined.
+ "Add a help specification iff none is defined.
See the documentation of the function `info-lookup-add-help'
for more details."
(apply 'info-lookup-add-help* t arg))
(or mode (setq mode (info-lookup-select-mode)))
(or (info-lookup->mode-value topic mode)
(error "No %s help available for `%s'" topic mode))
- (let ((entry (or (assoc (if (info-lookup->ignore-case topic mode)
- (downcase item) item)
- (info-lookup->completions topic mode))
- (error "Not documented as a %s: %s" topic (or item ""))))
- (modes (info-lookup->all-modes topic mode))
- (window (selected-window))
- found doc-spec node prefix suffix doc-found)
+ (let* ((completions (info-lookup->completions topic mode))
+ (ignore-case (info-lookup->ignore-case topic mode))
+ (entry (or (assoc (if ignore-case (downcase item) item) completions)
+ (assoc-ignore-case item completions)
+ (error "Not documented as a %s: %s" topic (or item ""))))
+ (modes (info-lookup->all-modes topic mode))
+ (window (selected-window))
+ found doc-spec node prefix suffix doc-found)
(if (or (not info-lookup-other-window-flag)
(eq (current-buffer) (get-buffer "*info*")))
(info)
- (save-window-excursion (info))
- (switch-to-buffer-other-window "*info*"))
+ (progn
+ (save-window-excursion (info))
+ ;; Determine whether or not the Info buffer is visible in
+ ;; another frame on the same display. If it is, simply raise
+ ;; that frame. Otherwise, display it in another window.
+ (let* ((window (get-buffer-window "*info*" t))
+ (info-frame (and window (window-frame window))))
+ (if (and info-frame
+ (display-multi-frame-p)
+ (memq info-frame (frames-on-display-list)))
+ (select-frame info-frame)
+ (switch-to-buffer-other-window "*info*")))))
(while (and (not found) modes)
(setq doc-spec (info-lookup->doc-spec topic (car modes)))
(while (and (not found) doc-spec)
nil))
(condition-case nil
(progn
- (Info-menu (or (cdr entry) item))
+ ;; Don't use Info-menu, it forces case-fold-search to t
+ (let ((case-fold-search nil))
+ (re-search-forward
+ (concat "^\\* " (regexp-quote (or (cdr entry) (car entry)))
+ ":")))
+ (Info-follow-nearest-node)
(setq found t)
(if (or prefix suffix)
(let ((case-fold-search
(buffer-read-only nil))
(goto-char (point-min))
(re-search-forward
- (concat prefix (regexp-quote item) suffix))
+ (concat prefix (regexp-quote (car entry)) suffix))
(goto-char (match-beginning 0))
(and (display-color-p) info-lookup-highlight-face
;; Search again for ITEM so that the first
- ;; occurence of ITEM will be highlighted.
- (re-search-forward (regexp-quote item))
+ ;; occurrence of ITEM will be highlighted.
+ (re-search-forward (regexp-quote (car entry)))
(let ((start (match-beginning 0))
(end (match-end 0)))
(if (overlayp info-lookup-highlight-overlay)
(error nil)))
(setq doc-spec (cdr doc-spec)))
(setq modes (cdr modes)))
+ ;; Alert the user if case was munged, and do this after bringing up the
+ ;; info buffer since that can print messages
+ (unless (or ignore-case
+ (string-equal item (car entry)))
+ (message "Found in different case: %s" (car entry)))
(or doc-found
(error "Info documentation for lookup was not found"))
;; Don't leave the Info buffer if the help item couldn't be looked up.
:mode 'makefile-mode
:regexp "\\$[^({]\\|\\.[_A-Z]*\\|[_a-zA-Z][_a-zA-Z0-9-]*"
:doc-spec '(("(make)Name Index" nil
+ "^[ \t]*`" "'")
+ ("(automake)Macro and Variable Index" nil
"^[ \t]*`" "'"))
- :parse-rule "\\$[^({]\\|\\.[_A-Z]*\\|[_a-zA-Z0-9-]+")
+ :parse-rule "\\$[^({]\\|\\.[_A-Z]*\\|[_a-zA-Z0-9-]+"
+ :other-modes '(automake-mode))
(info-lookup-maybe-add-help
:mode 'texinfo-mode
(info-lookup-maybe-add-help
:mode 'autoconf-mode
:regexp "A[CM]_[_A-Z0-9]+"
- :doc-spec '(("(autoconf)Macro Index" "AC_"
+ :doc-spec '(("(autoconf)Autoconf Macro Index" "AC_"
+ "^[ \t]+- \\(Macro\\|Variable\\): .*\\<" "\\>")
+ ("(automake)Macro and Variable Index" nil
+ "^[ \t]*`" "'")
+ ;; These are for older versions (probably pre autoconf 2.5x):
+ ("(autoconf)Macro Index" "AC_"
"^[ \t]+- \\(Macro\\|Variable\\): .*\\<" "\\>")
- ("(automake)Index" nil
+ ("(automake)Macro and Variable Index" nil
"^[ \t]*`" "'"))
;; Autoconf symbols are M4 macros. Thus use M4's parser.
:parse-rule 'ignore
"^" "\\b"))
:parse-rule "[$@%]?\\([_a-zA-Z0-9]+\\|[^a-zA-Z]\\)")
+(info-lookup-maybe-add-help
+ :mode 'cperl-mode
+ :regexp "[$@%][^a-zA-Z]\\|\\$\\^[A-Z]\\|[$@%]?[a-zA-Z][_a-zA-Z0-9]*"
+ :other-modes '(perl-mode))
+
(info-lookup-maybe-add-help
:mode 'latex-mode
:regexp "\\\\\\([a-zA-Z]+\\|[^a-zA-Z]\\)"
(info-lookup-maybe-add-help
:mode 'emacs-lisp-mode
- :regexp "[^()' \t\n]+"
+ :regexp "[^][()'\" \t\n]+"
:doc-spec '(("(emacs)Command Index")
("(emacs)Variable Index")
- ("(elisp)Index"
- (lambda (item)
- (let ((sym (intern-soft item)))
- (cond ((null sym)
- (if (string-equal item "nil") item))
- ((or (boundp sym) (fboundp sym))
- item))))
- "^[ \t]+- [^:]+:[ \t]*" "\\b")))
+ ("(elisp)Index")))
(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 'scheme-mode
- :regexp "[^()' \t\n]+"
+ :regexp "[^()'\" \t\n]+"
:ignore-case t
;; Aubrey Jaffer's rendition from <URL:ftp://ftp-swiss.ai.mit.edu/pub/scm>
:doc-spec '(("(r5rs)Index" nil