Re: Explain a bit more on how to configure language server in Eglot's manual

[Juri Linkov]

>> Orthogonal to Augusto’s function, but I think something like this
>> would be nice: a function that pops up a buffer and enters recursive
>> edit for arbitrary input and edit, and when you hit C-c C-c, it
>> returns the buffer content, kind of like Magit’s commit buffer. Plus
>> buffer content validator (eg, validate JSON), and arbitrary major
>> modes in the buffer, etc.
>
> This sounds like a generally useful thing for Emacs.  There should be a
> version without recursive edit which calls a callback function when
> quitting.

'read-string-from-buffer' was intended to do this by relying on
'string-edit'.  You could add a new function e.g. named
'read-expression-from-buffer' that does the same as
'read--expression' but using a buffer instead of the minibuffer.