GNU bug report logs - #46274
28.0.50; Inconsistent doc for syntax-propertize-function

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 46274 <at> debbugs.gnu.org
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: bug#46274: 28.0.50; Inconsistent doc for syntax-propertize-function
Date: Thu, 04 Feb 2021 09:34:11 +0100

Filipp Gunbin <fgunbin <at> fastmail.fm> writes:

> C-h v syntax-propertize-function contains this text:
>
> The specified function may call `syntax-ppss' on any position
> before END, but if it calls `syntax-ppss' on some
> position and later modifies the buffer on some earlier position,
> then it is its responsibility to call `syntax-ppss-flush-cache' to flush
> the now obsolete ppss info from the cache.
>
> But (info "(elisp) Syntax Properties") has a different view:
>
> It is allowed to call ‘syntax-ppss’ on any position before END.
> However, it should not call ‘syntax-ppss-flush-cache’; so, it is not
> allowed to call ‘syntax-ppss’ on some position and later modify the
> buffer at an earlier position.
>
> Which is the right one?

Good question.  Stefan M added to the CCs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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