(read-regexp): Add regexp for symbol at point to the defaults (Bug#13687).

[gnu-emacs] / lisp / ehelp.el

diff --git a/lisp/ehelp.el b/lisp/ehelp.el
index 281148d9cf6772c0e0179921c7e2ce7d55f2b590..88fc87b5b7af07adf1212596e09972398daa7981 100644 (file)
--- a/lisp/ehelp.el
+++ b/lisp/ehelp.el
@@ -1,6 +1,6 @@
 ;;; ehelp.el --- bindings for electric-help mode -*- lexical-binding: t -*-
 
-;; Copyright (C) 1986, 1995, 2000-2012  Free Software Foundation, Inc.
+;; Copyright (C) 1986, 1995, 2000-2013 Free Software Foundation, Inc.
 
 ;; Author: Richard Mlynarik
 ;; (according to ack.texi and authors.el)
@@ -61,6 +61,8 @@
 
 (defvar electric-help-map
   (let ((map (make-keymap)))
+    ;; FIXME fragile.  Should derive from help-mode-map in a smarter way.
+    (set-keymap-parent map button-buffer-map)
     ;; allow all non-self-inserting keys - search, scroll, etc, but
     ;; let M-x and C-x exit ehelp mode and retain buffer:
     (suppress-keymap map)
@@ -78,6 +80,7 @@
     (define-key map (char-to-string help-char) 'electric-help-help)
     (define-key map "?" 'electric-help-help)
     (define-key map " " 'scroll-up)
+    (define-key map [?\S-\ ] 'scroll-down)
     (define-key map "\^?" 'scroll-down)
     (define-key map "." 'beginning-of-buffer)
     (define-key map "<" 'beginning-of-buffer)
@@ -102,7 +105,7 @@
   (setq buffer-read-only t)
   (setq electric-help-orig-major-mode major-mode)
   (setq mode-name "Help")
-  (setq major-mode 'help)
+  (setq major-mode 'help-mode)
   (setq mode-line-buffer-identification '(" Help:  %b"))
   (use-local-map electric-help-map)
   (add-hook 'mouse-leave-buffer-hook 'electric-help-retain)