bug#62333: 30.0.50; Issue with tree-sitter syntax tree during certain changes

[Eli Zaretskii]

> Cc: wkirschbaum@gmail.com, gregory@heytings.org, casouri@gmail.com,
>  62333@debbugs.gnu.org
> Date: Fri, 31 Mar 2023 09:19:35 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Simple example: if the beginning of the narrowed region falls inside a 
> > (let's say multine) string, should the visible remainder of that string 
> > continue to be highlighted as a string?
> 
> No.
> 
> > Or should the buffer contents after the string's closer now be
> > highlighted as being inside a string?
> 
> Yes.

To clarify: these my answers are in the context of the current
handling of narrowing, not in the context of restricting the parser
(which you seem to reject as a useful idea anyway).