Re: Suggested experimental test

[Stefan Kangas]

Dmitry Gutov <dgutov@yandex.ru> writes:

> On 25.03.2021 23:11, Stefan Monnier wrote:
>> E.g. if it's bound to `C-c` it's fairly convenient to have bindings
>> within it of the form `C-<letter>`, but if it's bound to `c` instead
>> (assuming a a modal key-binding scheme like vi) then using `C-<letter>`
>> within it is much less convenient.
>
> Interesting example. I wanted to say nobody will bind it to 'c', but
> some people might decide to bind it to M-c instead.
>
> Here's a thought: let's invent an extension of the kbd syntax which will
> allow us to specify a modifier indirectly based on an entry in
> key-translation-map. Like:
>
>    (kbd "<mode-specific> <mode-specific-modifier>-c")
>
> Even more backward-incompatible, but okay. But what to do if
> <mode-specific> has no modifiers, like <menu> in Yuri's example?
> Translate '<mode-specific-modifier>-c' to just 'c'? What happens to any
> other simple 'c' entry in that keymap? Do we "flip" it to, say, 'C-c'?

How about something like:

    (mode-kbd "k")         ; C-c k
    (mode-kbd "mod k")     ; C-c C-k
    (mode-kbd "mod2 k")    ; C-c M-k
    (mode-kbd "mod3 k")    ; C-c S-k

Then mod, mod2 and mod3 could be set to use whatever modifier you want.
And mode-kbd would use the correct prefix.

(BTW, it would be even nicer if we could evaluate such a form on
key lookup.)