GNU bug report logs - #41005
problem with rendering Persian text in Emacs 27

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From: Eli Zaretskii <eliz <at> gnu.org>
To: 41005 <at> debbugs.gnu.org, valizadeh.ho <at> gmail.com
Cc: nicholasdrozd <at> gmail.com
Subject: bug#41005: problem with rendering Persian text in Emacs 27
Date: Thu, 04 Jun 2020 07:10:49 +0300

On June 4, 2020 7:01:30 AM GMT+03:00, Eli Zaretskii <eliz <at> gnu.org> wrote:
> On June 4, 2020 6:01:21 AM GMT+03:00, hossein valizadeh
> <valizadeh.ho <at> gmail.com> wrote:
> > Hello,
> > 
> > 1. This happen with every font that supports Arabic.
> > 2. When scale back to zero the problem happen again.
> > 
> > I attached my emacs-bug-info.
> > 
> > 
> > On Thu, Jun 4, 2020 at 7:09 AM hossein valizadeh
> > <valizadeh.ho <at> gmail.com>
> > wrote:
> > 
> > > Hello,
> > >
> > > 1. This happen with every font that supports Arabic.
> > > 2. When scale back to zero the problem happen again.
> > >
> 
> 
> Thanks.
> 
> What is your version of HarfBuzz?
> And what happens if you unset XMODIFIERS, i.e. disable the ibus input
> method framework?

Also, please go to the problematic place in the text and type "C-u C-x =", then post everything that Emacs shows in the *Help* buffer as result.  Please do this both at text scale zero, when shaping is incorrect, and at non-zero scale, and post the contents of *Help* in both cases.

Screenshots of both displays as well as the text of the buffer used for these experiments will also help, as mentioned earlier 

And finally, please try this with the version on the master branch, where a few fixes were installed lately.

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