bug#36525: M-x default when cursor on top of a M-x command in INFO

[Juri Linkov]

> A better way to handle this is to have a key
> (Icicles uses `M-.') that pulls text from the
> buffer into the minibuffer, appending it to
> whatever input text might already be there.
>
> Summary:
>
> Repeated `M-.' can have two different behaviors.
> You can choose (by an option) which one to use.
> [...]
>
> Whether vanilla Emacs would allow flexibility
> to this degree is not so important as at
> least having Emacs have a key that grabs
> _something_ from the buffer text and appends
> it to minibuffer input.  Choice #2 above is
> pretty simple to realize - give users an
> option to specify which kind of text thing
> they want to insert.

Do you think `M-.' is a suitable key for vanilla Emacs?
Its global keybinding is `xref-find-definitions',
but is this command useful in the minibuffer?
Or could be taken for grabbing text from the buffer
to the minibuffer?