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

From: Eli Zaretskii <[email-masked]>
Date: Tue, 28 Mar 2023 15:36:06 +0300

> Date: Tue, 28 Mar 2023 12:25:03 +0000
> From: Gregory Heytings <[email-masked]>
> cc: [email-masked], [email-masked], [email-masked], 
>     [email-masked]
> 
> 
> >> Hmmm... no, it will work for any values of [C..D]: (widen) is 
> >> equivalent to (narrow-to-region 1 (1+ (buffer-size))), and in general 
> >> the bounds given to 'narrow-to-region' are not limited by the current 
> >> narrowing.
> >
> > with-restriction signals an error if you call it wit a region that is 
> > outside of the current restriction.  At least it does here.
> >
> 
> Do you have a recipe?  It should not signal an error, and I can't 
> reproduce that.  With this for instance:
> 
> M-: (global-set-key (kbd "C-t") (lambda () (interactive) (with-restriction 20 30 (message "{%s}" (buffer-string))))) RET

Sorry, my bad.  Bad testing.

But regardless, lifting user-defined restriction is a no-no, that's
what the problem is all about.  with-restriction cannot do anything
against this.