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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: emacs-tree-sitter and Emacs
Date: Thu, 02 Apr 2020 19:10:22 +0300
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To: Michael Welsh Duggan <mwd@cert.org>
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In-Reply-To: <y2tdefimihoqq6.fsf@lx-birch.ad.sei.cmu.edu> (message from
 Michael Welsh Duggan on Thu, 02 Apr 2020 11:24:33 -0400)
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> From: Michael Welsh Duggan <mwd@cert.org>
> Cc: Michael Welsh Duggan <mwd@md5i.com>, <stephen_leake@stephe-leake.org>,
>         <emacs-devel@gnu.org>
> Date: Thu, 02 Apr 2020 11:24:33 -0400
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Each buffer always knows which part of it remains unchanged.  When
> > fontification is invoked, it should start from that place.  So there's
> > no need to parse _all_ prior context.
> 
> Why not?  Won't it miss that hypothetical opening comment delimiter, for
> example?

No, because that was already taken care of when that comment delimiter
was inserted.