bug#9751: 23.3; Alternative Keyboard Feature/Bug

[Juri Linkov]

>> I can't find a way to translate keys on a per-mode basis
>> in modes where single keys are bound to non-self-inserting commands.
>
> Well, if you really have to, you can do it with something like:
>
>    (define-key function-key-map [β]
>      (lambda (_prompt) (if (derived-mode-p 'dired-mode) [?a] [?b])))
>
> but I wonder in which circumstance you'd want to do that.

The problem common to Greek and Cyrillic is how to configure
keybindings in such a way that single characters bound to
`self-insert-command' remained untranslated as they are typed
with a non-English system input method, but to translate
single characters to English letters when they are bound
to other Emacs commands (like `v' in Dired mode)
that would allow to run commands bound to them.