Bug 145647 - Arabic tatweel rendered as whitespace with preceding English text
Summary: Arabic tatweel rendered as whitespace with preceding English text
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
(earliest affected) rc
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: ⁨خالد حسني⁩
Whiteboard: target:7.5.0 inReleaseNotes:7.5
Depends on:
Blocks: RTL-Arabic-and-Farsi Kashida-Justification
  Show dependency treegraph
Reported: 2021-11-12 16:51 UTC by Eyal Rozenberg
Modified: 2022-12-07 16:00 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:

A document with the bug manifesting (11.00 KB, application/vnd.oasis.opendocument.text)
2021-11-12 16:52 UTC, Eyal Rozenberg
A document with the bug manifesting (11.00 KB, application/vnd.oasis.opendocument.text)
2021-11-22 19:23 UTC, Eyal Rozenberg
PDF rendering of document (18.17 KB, application/pdf)
2021-11-22 19:25 UTC, Eyal Rozenberg

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Description Eyal Rozenberg 2021-11-12 16:51:26 UTC
Consider the attached document. It has two paragraphs, each with an Arabic word  (سقاية) followed by a manual line break, to ensure the single word is justified all the way to the end of the line; but the second paragraph has the English word "hi" first. So:

hi سقاية

You'll notice the Arabic word is justified using tatweel.... except that on the second line, instead of a "brush-stroke" for the tatweel, we get white space.

I've repeated this "test" with a multi-word line:

أنا أحب التطويل
hi أنا أحب التطويل

so as to clarify it's  not an issue having to do with a single word being on the line.

PS - The tatweel should be distributed much more uniformly IMHO but that's another issue.
Comment 1 Eyal Rozenberg 2021-11-12 16:52:31 UTC
Created attachment 176212 [details]
A document with the bug manifesting

This was created with:

Version: / LibreOffice Community
Build ID: c998691e22ceda15c89d55cf7005201f0392dadb
CPU threads: 4; OS: Linux 5.10; UI render: default; VCL: gtk3
Locale: en-US (en_IL); UI: en-US
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:master, Time: 2021-10-14_11:54:20

... which is also the system on which I observed the bug.
Comment 2 Eyal Rozenberg 2021-11-12 16:53:54 UTC
Linked to another similar issue.
Comment 3 Eyal Rozenberg 2021-11-22 19:23:23 UTC
Created attachment 176427 [details]
A document with the bug manifesting

Something in the previous attachment was off, and you couldn't see the bug manifesting.
Comment 4 Eyal Rozenberg 2021-11-22 19:25:17 UTC
Created attachment 176428 [details]
PDF rendering of document

PDF rendering of attachment 176427 [details], using LO on Devuan GNU/Linux.
Comment 5 Dieter 2021-12-08 07:58:03 UTC
I confirm it with attached document and

Version: (x64) / LibreOffice Community
Build ID: 2934472ab888ebfe64a153984af2902fac63a7a0
CPU threads: 4; OS: Windows 10.0 Build 19044; UI render: Skia/Raster; VCL: win
Locale: de-DE (de_DE); UI: en-GB
Calc: CL

Steps to reproduce
1. Open attachment 176427 [details]
2. Place cursor right from the first line
3. Type "hi" (O.K.)
4. type a space => bug becomes visible
Comment 7 Dieter 2022-10-02 14:06:32 UTC
I can see the difference in actual master, but can't assess, if this bug is resolved now. Eyal, please have a look at it.