GNU bug report logs - #33414
27.0.50; inhibit-changing-match-data can be t in syntax-propertize functions, breaking backtrace and looking-at

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Pip Cet <pipcet <at> gmail.com>
Cc: 33414 <at> debbugs.gnu.org
Subject: bug#33414: 27.0.50; inhibit-changing-match-data can be t in syntax-propertize functions, breaking backtrace and looking-at
Date: Sat, 17 Nov 2018 16:36:40 +0200

> From: Pip Cet <pipcet <at> gmail.com>
> Date: Sat, 17 Nov 2018 14:14:04 +0000
> Cc: 33414 <at> debbugs.gnu.org
> 
> > > (let ((inhibit-changing-match-data t)) (backtrace))
> > >
> > > into the *scratch* buffer and evaluate with C-M-x.)
> >
> > This works on the release branch, so I think it's a regression that
> > needs to be fixed.
> 
> If I'm testing correctly,
> 
> (let ((inhibit-changing-match-data t)) (debug))
> 
> fails on both branches

You are right, not sure what I did wrong when trying it a few moments
ago.

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