GNU bug report logs - #62333
30.0.50; Issue with tree-sitter syntax tree during certain changes

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Message #122 received at 62333 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Gregory Heytings <gregory <at> heytings.org>
Cc: wkirschbaum <at> gmail.com, casouri <at> gmail.com, 62333 <at> debbugs.gnu.org,
 dgutov <at> yandex.ru
Subject: Re: bug#62333: 30.0.50; Issue with tree-sitter syntax tree during
 certain changes
Date: Mon, 27 Mar 2023 16:39:37 +0300

> Date: Mon, 27 Mar 2023 08:24:42 +0000
> From: Gregory Heytings <gregory <at> heytings.org>
> cc: Eli Zaretskii <eliz <at> gnu.org>, wkirschbaum <at> gmail.com, casouri <at> gmail.com, 
>     62333 <at> debbugs.gnu.org
> 
> >> Which is a fragile, semi-broken means, as we all know.
> >
> > What is a broken mess, is user-level narrowing. And how the downstream 
> > code can never guess the purpose the narrowing was applied for.
> 
> Note that this is what labeled narrowings attempts to solve.

Labeled narrowing cannot solve this because it does nothing to
alleviate the problems with user-defined narrowing.  So if the user
narrows the buffer, we cannot do anything to safely widen in the
general case, and labeled narrowing cannot help us.

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