RE: Find all commands bound to key prefix

[Drew Adams]

> > Some users, such as myself, explicitly bind C-h in 
> > isearch-mode-map so that C-s C-h does show the C-s
> > bindings.  
> 
> And how do you do that? And what command do you bind it to?

http://www.emacswiki.org/cgi-bin/wiki/IsearchPlus - description

http://www.emacswiki.org/cgi-bin/wiki/isearch%2b.el - code

This is the relevant part:

(add-hook 'isearch-mode-hook
          (lambda ()
            (define-key isearch-mode-map "\C-h" 'isearch-mode-help)))

(defun isearch-mode-help ()
  "Display information on interactive search in buffer *Help*."
  (interactive)
  (describe-function 'isearch-forward)
  (isearch-done)
  (isearch-clean-overlays)
  (save-excursion
    (set-buffer "*Help*")
    (goto-char (point-max))
    (let ((buffer-read-only nil))
      (insert (substitute-command-keys "

Bindings in Isearch minor mode:
------------------------------

\\{isearch-mode-map}")))))