[implementations-list] Early implementation of new VIM-like mode

[Frank Fischer]

On Wed, Jul 01, 2009 at 08:15:21PM +0200, Alessandro Piras wrote:
> Follow up: the most interesting thing about your approach is that you don't
> use emacs keymaps.
> Could you explain me how it works (a short summary is ok) ?

A simple keymap catching all events is installed (the keymap of the
minor mode 'vim-key-mode').  When an event comes in the function
vim:handle-key is called.  This function does some housekeeping and
calls the function vim:input-key which is the entry point for 
vim-mode's own keymap.  If the event can't be handled by vim:input-key,
it's pushed back to unread-command-events, the keymap of vim-key-mode is
disabled and the event can be processed by Emacs as usual.  

Btw, keymaps of vim-mode are very similar to emacs-keymaps but contain
more meta-information.  But the general structure is the same.
Therefore, in theory all emacs-events could be handled by
vim-mode-keymaps, not only keyboard-events.

I know, the documentation is poor at this time, I'll try to improve it
soon :)

Bye,
Frank