GNU bug report logs - #22983
syntax-ppss returns wrong result.

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From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Alan Mackenzie <acm <at> muc.de>, Dmitry Gutov <dgutov <at> yandex.ru>
Cc: John Wiegley <jwiegley <at> gmail.com>, 22983 <at> debbugs.gnu.org
Subject: bug#22983: [ Patch ] Re: bug#22983: syntax-ppss returns wrong result.
Date: Sun, 17 Sep 2017 11:12:25 +0000

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Alan Mackenzie <acm <at> muc.de> schrieb am So., 10. Sep. 2017 um 13:42 Uhr:

>
> > - Before this change is pushed to master, or shortly after, I'd like to
> > know that it actually fixed the problem Philipp experienced with
> > python-mode, so we can revert 4fbd330. If it was caused by e.g.
> > syntax-table changing, we've not improved much.
>
> Philipp, any chance of you trying out python mode with this patch but
> without 4fbd330?


Unfortunately the problem wasn't easily reproducible back then. The problem
would occur from time to time, but I never found a way to trigger it
reproducibly. Therefore the unit test I've added in the commit artificially
generates the symptom. The root cause is still unknown; while syntax-ppss
and narrowing might be a potential root cause (the fontification code uses
both), it might also be something else.

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