bug#42708: Let users copy "*Char Help*" buffer

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Juri Linkov <juri@linkov.net> writes:
>
>> Oh, I noticed it doesn't support 'C-h' that should pop up the buffer "
>> *Char Help*" from the dynamic variable 'help-form'.
>>
>> Then maybe we should rewrite read-char-choice to use
>> read-char-from-minibuffer?
>
> Yes, that's even better -- then all the callers to read-char-choice
> would no longer be as modal as they are now.

I've now done this on the trunk.

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