Re: Suggested experimental test

[Dmitry Gutov <dgutov@yandex.ru>]

Hi Stefan,

On 27.03.2021 02:02, Stefan Monnier wrote:
> While we can use such tricks, I think what we really want is to
> abstract the keymap API such that we can provide keymaps whose elements
> are computed dynamically.
> 
> There'd need to be at least 2 methods: `lookup-key`, and `map-keymap`,
> and adding `where-is` would probably allow better behaviors (but could
> introduce other problems given the way where-is currently works).
> 
> One application is to create a keymap (on function-key-map) that remaps
> all the events of the form "modifiers + mouse-4" to "same-modifiers +
> scroll-up".
> 
> Another would be a keymap that binds the same keys as some other keymap
> except it requires some additional modifier or it removes a modifier, or
> it capitalizes all the letters, or it transcribes all the cyrillic
> letters to their "equivalent" ASCII, ...

Could you give an example of how this facility will be used? Modes will 
be returning "generic" keymaps by using (mode-local-kbd "...") as Stefan 
K suggested?

Will easy-mmode-define-keymap return such keymaps? Or will the keymap 
values actually have the same structure, but behave differently because 
of augmented lookup-key, map-keymap, etc?