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bug#22983: [ Patch ] Re: bug#22983: syntax-ppss returns wrong result.

From: Alan Mackenzie
Subject: bug#22983: [ Patch ] Re: bug#22983: syntax-ppss returns wrong result.
Date: Tue, 19 Sep 2017 20:50:24 +0000
User-agent: Mutt/1.7.2 (2016-11-26)

Hello, Philipp.

On Sun, Sep 17, 2017 at 11:12:25 +0000, Philipp Stephani wrote:
> Alan Mackenzie <address@hidden> 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.

OK, I understand.  Cache effects are the very devil to debug.

Alan Mackenzie (Nuremberg, Germany).

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