>> |(defun ndk/paren-match-p () (let ((mismatch (nth 4 (show-paren--default))))
>>   (not mismatch))) It seems working. Gabriele |
> AFAIK It only checks the outside pair of parens.
> E.g. it won't detect the problem in
>
>      ((a + b])
>
>
> - Stefan
it is good for me because it cover the case, e.g.:

B=((1,3)∪(2,5])

Gabriele