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bug#36171: 25.1; Emacs displays Hebrew text incorrectly


From: Raoul Comninos
Subject: bug#36171: 25.1; Emacs displays Hebrew text incorrectly
Date: Thu, 13 Jun 2019 14:54:19 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

I am very pleased we are making progress. If we can get this right, it is going to save me having to retype all the Hebrew! The text certainly looks much better but the problem is not as yet fully resolved. There remain circles in the text (see attachment). If I try to delete them, something is lost from the word, either a vowel or a dagesh. I have also taken a screen shot of the Emacs version. Please confirm this is the correct one I should be using.

On 2019/06/13 11:44, Eli Zaretskii wrote:
Cc: 36171@debbugs.gnu.org
From: Raoul Comninos <revrari@mweb.co.za>
Date: Thu, 13 Jun 2019 10:53:24 +0200

I have attached a sample document with problematic Hebrew taken from a
few of the files.
Ah, I see.  This document uses precomposed Hebrew characters from the
Alphabetic Presentation Forms block, and we didn't include those in
the regular expressions used for finding sequences we need to compose
for display.  I've now fixed this in Git, you should be able to
rebuild after syncing with Git, and then the problem should go away.

(xft xfthb x)

Emacs needs HarfBuzz the library, not the program.  What does the
following produce inside the latest Emacs you built from Git:

    M-: (frame-parameter nil 'font-backend) RET
Yes, xfthb uses HarfBuzz to perform text shaping.

Thanks.

Attachment: circles.png
Description: PNG image

Attachment: emacs-version.png
Description: PNG image


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