Re: Showing all sequences bound to a prefix?

[Kevin Rodgers]

Drew Adams wrote:
> > > > > how can you know all keybindings which start with a key? 
> > > > > For instance, "C-h c" asks me to enter a key. If I enter
> > > > > "C-w" it waits for more input, which means that "C-w"
> > > > > is a prefix.
> > > > Use C-h, e.g. `C-x r C-h' will show you all key bindings 
> > > > starting with `C-x r'.
> > > That doesn't always work. Try C-s C-h, for instance.
> > C-s is not a key sequence 

I think Anselm meant "C-s is not a prefix key".

> Huh? The only reason `C-s C-h' does not work (show you the isearch bindings) is
> because RMS did not want it to work. He prefers that `C-h' break out of isearch
> (and so initiate global help).

`C-s C-h' does not work the way e.g. `C-x r C-h' works because `C-s' is not a
prefix key.  `C-s C-h' does not work the way you and I want it to work because
`C-s' invokes a transient mode (incremental search) with its own keymap, which
implies that `C-h' must be bound to mode-specific command in that keymap, and
RMS prefers a different binding than we do.

> (isearch+.el does let `C-s C-h' give you isearch help, including listing all 
of
> the bindings - http://www.emacswiki.org/emacs/IsearchPlus)

Or just put this in your ~/.emacs:

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

--
Kevin Rodgers
Denver, Colorado, USA