>> On Mon, Mar 21 2016 02:05, Vitalie Spinu wrote:

>> Are you interested in working on a patch? Also Cc'ing Stefan.

> My knowledge of emacs C internals is close to 0. Elisp side (and probably C
> side) of this is trivial. I will look into it but I don't think I am the best
> person for that.

The widen part turned to be easy.  Will look at parse-partial-sexp tomorrow.

 Vitalie