Eli Zaretskii <eliz@gnu.org> writes:
>> > Thanks, this sounds like a good addition.  Does it (or can it) work
>> > with the built-in JSON support we have on the master branch?
>> Not yet. I didn't know about that, but indeed it has to be on the
>> roadmap, so I'll start looking into it.
> Thanks, I think this is an important development direction.  We added
> JSON implementation in C for a good reason, so we'd like to have other
> core package be able to use that.

A few weeks ago, I posted my jsonrpc.el here and had good feedback:

   http://lists.gnu.org/archive/html/emacs-devel/2018-06/msg00288.html

If noone objects, I'm going to push the attached patch to core.  Then
I'll work on a manual and NEWS entry.

I'll also make a 1-file ELPA package out of the new lisp/jsonrpc.el
file.  This way eglot.el (already in ELPA) can specify that as a
dependency when running on Emacs 26.1.

>> So again, if LSP support is wanted, eglot.el fits that bill (and
>> better than others IMNSHO :-) But I'd let it mature out of core for a
>> little while more.
> Fair enough, thanks.

eglot.el is coming along nicely.  If the core-and-ELPA strategy works
out for jsonrpc.el, we can think about pushing that too.

João