Eli Zaretskii wrote:
> > Date: Fri, 24 May 2024 21:17:39 +0900
> > From: kobarity <kobarity@gmail.com>
> > Cc: Andreas Röhler <andreas.roehler@easy-emacs.de>,	Lin
> >  Sun <sunlin7.mail@gmail.com>,	71093@debbugs.gnu.org
> > 
> > Eli Zaretskii wrote:
> > > 
> > > > Date: Tue, 21 May 2024 12:47:57 +0200
> > > > From: Andreas Röhler <andreas.roehler@easy-emacs.de>
> > > > 
> > > > a = b = c = 5
> > > > 
> > > > b and c are not fontified
> > > 
> > > Can someone please look into fixing this?  python-ts-mode does TRT,
> > > btw.
> > 
> > Sorry, this bug was introduced by my commit
> > 4915ca5dd4245a909c046e6691e8d4a1919890c8.  I canceled it in commit
> > 6b2c8dc9050c5c0514fa404733ce1d4a37d00e39 due to a performance issue,
> > but the cancellation was incomplete.  Attached is the patch to fix
> > this in master with an ERT.  Is it better to fix in emacs-29?
> 
> Thanks.  If the regression was in Emacs 29, then yes, it is better to
> fix that on the emacs-29 branch.

Attached is the patch for emacs-29 branch.