> I don't think there's code in Emacs which does what you want, so if you
> really need to check proper pairing you're going to have to write the code.
>
>
>          Stefan
FYI. NickD offers me this code 
https://emacs.stackexchange.com/a/81604/15606:

|(defun ndk/paren-match-p () (let ((mismatch (nth 4 
(show-paren--default)))) (not mismatch))) It seems working. Gabriele |