[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters when using diacritics

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Hossein  changed:

   What|Removed |Added

 Blocks||150285


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=150285
[Bug 150285] (Justified-Arabic-Text-Kashida) - [META] Problems with Justified
Arabic/Persian text
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters when using diacritics

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Hossein  changed:

   What|Removed |Added

   Keywords||bibisected, bisected,
   ||regression
Version|5.3.1.2 release |5.3.0.3 release
Summary|RTL Arabic justified text   |RTL Arabic justified text
   |has some gaps between   |has some gaps between
   |characters  |characters when using
   ||diacritics
  Regression By||dr.khaled.ho...@gmail.com

--- Comment #32 from Hossein  ---
This is a regression, bibisected to:

commit 8f2dd1df1d6cc94ebbc1149de72bc6d6dffa6533
Author: Khaled Hosny 
Date:   Wed Nov 2 23:52:06 2016 +0200

Revert "Revert "Enable the new text layout engine by default""

This reverts commit 3950166877bf1308f9e449992e20b558342af825.

This problem first appeared in LibreOffice 5.3, after enabling the new text
engine that uses HarfBuzz as the default for rendering text on all platforms.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #30 from Hossein  ---
Created attachment 181637
  --> https://bugs.documentfoundation.org/attachment.cgi?id=181637=edit
Gaps inside Arabic/Persian text with diacritics in justified paragraphs

This problem happens when you use diacritics. To show the problem better, I
attach an example from Ask LibreOffice, in which the problem is more clearly
visible:

Justified Persian (Farsi) paragraphs! 
https://ask.libreoffice.org/t/justified-persian-farsi-paragraphs/60605

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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Hossein  changed:

   What|Removed |Added

 CC||hoss...@libreoffice.org

--- Comment #31 from Hossein  ---
Created attachment 181638
  --> https://bugs.documentfoundation.org/attachment.cgi?id=181638=edit
Gaps inside Arabic/Persian text with diacritics in justified paragraphs

This is the PNG version of the above attachment.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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Buovjaga  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=13
   ||9627

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Buovjaga  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=13
   ||7528

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Buovjaga  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=10
   ||4921

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Buovjaga  changed:

   What|Removed |Added

 CC||msrosy...@gmail.com

--- Comment #29 from Buovjaga  ---
*** Bug 137530 has been marked as a duplicate of this bug. ***

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #28 from QA Administrators  ---
Dear Munzir Taha,

To make sure we're focusing on the bugs that affect our users today,
LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed
bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this
bug report. During that time, it's possible that the bug has been fixed, or the
details of the problem have changed. We'd really appreciate your help in
getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice
from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information
from Help - About LibreOffice.

If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave a comment that includes the information from Help
- About LibreOffice.

Please DO NOT

Update the version field
Reply via email (please reply directly on the bug tracker)
Set the bug's Status field to RESOLVED - FIXED (this status has a particular
meaning that is not 
appropriate in this case)


If you want to do more to help you can test to see if your issue is a
REGRESSION. To do so:
1. Download and install oldest version of LibreOffice (usually 3.3 unless your
bug pertains to a feature added after 3.3) from
https://downloadarchive.documentfoundation.org/libreoffice/old/

2. Test your bug
3. Leave a comment with your results.
4a. If the bug was present with 3.3 - set version to 'inherited from OOo';
4b. If the bug was not present in 3.3 - add 'regression' to keyword


Feel free to come ask questions or to say hello in our QA chat:
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Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Munzir Taha  changed:

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 Attachment #134507|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Munzir Taha  changed:

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 Attachment #134508|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

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 Attachment #134506|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny (inactive)  changed:

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 Attachment #150532|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny (inactive)  changed:

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 Attachment #150535|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny (inactive)  changed:

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 Attachment #150533|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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 Attachment #150529|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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 Attachment #150525|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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 Attachment #150530|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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 Attachment #150531|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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 Attachment #150527|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny (inactive)  changed:

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 Attachment #150528|0   |1
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny (inactive)  changed:

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 Attachment #150526|0   |1
is obsolete||

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #27 from Khaled Hosny (inactive)  ---
The 6.2.x issue is different than the original issue here, and is tracked in
bug 124109 (which should be fixed in the next point release).

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #26 from Babak Razmjoo  ---
Created attachment 150535
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150535=edit
How LibreOffice 6.2.2.2 actually displays this text- part 1-revised

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #25 from Babak Razmjoo  ---
(In reply to Babak Razmjoo from comment #17)
> Created attachment 150527 [details]
> The PDF generated by LibreOffice 6.2.2.2 from the previous file
> 
> Everything is OK with this PDF,too

Sorry, everything is not OK here too.
There are some incorrect Keshide or Tatvil marks in texts rendered by
‫‪Liberation‬‬ ‫‪sans‬‬ and ‫‪Lohit‬‬ ‫‪Devanagari‬‬

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #24 from Babak Razmjoo  ---
(In reply to Babak Razmjoo from comment #16)
> Created attachment 150526 [details]
> The PDF generated by LibreOffice 6.1.5.2 from the previous file
> 
> Everything is OK in this PDF

Sorry, everything is not OK here. All fonts till Dejavu Sans can render the
text perfectly, but there are Keshide (or Tatvil) marks in wrong places in
texts rendered by ‫‪Liberation‬‬ ‫‪sans‬‬ or ‫‪Lohit‬‬ ‫‪Devanagari‬‬

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #23 from Babak Razmjoo  ---
Created attachment 150533
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150533=edit
How LibreOffice 6.2.2.2 actually displays this text- part 6

Also "Lohit Devanagari" seems OK, although it is an Indian font

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #22 from Babak Razmjoo  ---
Created attachment 150532
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150532=edit
How LibreOffice 6.2.2.2 actually displays this text- part 5

Even Dejavu Sans has this problem, but not Liberation Sans.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #21 from Babak Razmjoo  ---
Created attachment 150531
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150531=edit
How LibreOffice 6.2.2.2 actually displays this text- part 4

the same as part 1

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #20 from Babak Razmjoo  ---
Created attachment 150530
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150530=edit
How LibreOffice 6.2.2.2 actually displays this text- part 3

The same as part 1

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #19 from Babak Razmjoo  ---
Created attachment 150529
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150529=edit
How LibreOffice 6.2.2.2 actually displays this text- part 2

The same as part 1

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #18 from Babak Razmjoo  ---
Created attachment 150528
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150528=edit
How LibreOffice 6.2.2.2 actually displays this text- part 1

There are excessive spaces between letters of single words. I have marked this
words with red ellipses or boxes. You can see the incorrect processes starts in
each line and continues to the end of that line.

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--- Comment #17 from Babak Razmjoo  ---
Created attachment 150527
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150527=edit
The PDF generated by LibreOffice 6.2.2.2 from the previous file

Everything is OK with this PDF,too

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #16 from Babak Razmjoo  ---
Created attachment 150526
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150526=edit
The PDF generated by LibreOffice 6.1.5.2 from the previous file

Everything is OK in this PDF

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--- Comment #15 from Babak Razmjoo  ---
Created attachment 150525
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150525=edit
A repeated text in Farsi with several fonts

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V Stuart Foote  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=11
   ||6969

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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Khaled Hosny  changed:

   What|Removed |Added

 Depends on||104921


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=104921
[Bug 104921] Make kashida insertion less brittle
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #14 from Munzir Taha  ---
I've just attached another extreme case example, where the kashida messed up
the text though I haven't even used justification! Just by changing the zoom
from 351% to 352% I got the bad text. Attached is the source document and two
screenshots; one shows the good, the other shows the bad.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #13 from Munzir Taha  ---
Created attachment 134508
  --> https://bugs.documentfoundation.org/attachment.cgi?id=134508=edit
The bad

The bad

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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--- Comment #12 from Munzir Taha  ---
Created attachment 134507
  --> https://bugs.documentfoundation.org/attachment.cgi?id=134507=edit
The good

The good

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #11 from Munzir Taha  ---
Created attachment 134506
  --> https://bugs.documentfoundation.org/attachment.cgi?id=134506=edit
source document

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #10 from Munzir Taha  ---
Created attachment 132087
  --> https://bugs.documentfoundation.org/attachment.cgi?id=132087=edit
reproduceable without marks (screenshot)

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #9 from Munzir Taha  ---
Created attachment 132086
  --> https://bugs.documentfoundation.org/attachment.cgi?id=132086=edit
reproduceable without marks

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

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https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #8 from Munzir Taha  ---
@Khaled: you mentioned that
> the gap there should be a kashida but it moves to the wrong direction
> due to the presence of combining mark on the right of it

However, I can reproduce it with no marks on the right of it. Attached is an
example file and a screenshot

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #7 from Khaled Hosny  ---
(In reply to Munzir Taha from comment #6)
> Shouldn't there be a way to disable kashida justification and resort to
> space justification only?

Probably yes, but it might require both changes to the UI and the file format,
I don’t know for sure.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #6 from Munzir Taha  ---
@Khaled: Yes, I noticed the bug with many fonts including Amiri but it happens
in a random way that even closing the file and reopening it could make it
disappear in one place and appear in another. The current sample shows a more
consistent case.

Shouldn't there be a way to disable kashida justification and resort to space
justification only?

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny  changed:

   What|Removed |Added

   See Also|https://bugs.documentfounda |
   |tion.org/show_bug.cgi?id=10 |
   |3322|

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Khaled Hosny  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1

--- Comment #5 from Khaled Hosny  ---
That is a kashida issue, in the gap there should be a kashida but it moves to
the wrong direction due to the presence of combining mark on the right of it. I
don’t have the same font, but other fonts show the issue as well.

I recall fixing this exact issue at some point, but I can reproduce with 5.3,
may be it was fixed on 5.4 but I can’t test it right now.

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

Xisco Faulí  changed:

   What|Removed |Added

 CC||xiscofa...@libreoffice.org

--- Comment #4 from Xisco Faulí  ---
I can't reproduce it in

Version: 5.4.0.0.alpha0+
Build ID: d3b5bd4a07a619db6bee1c39c32280ac3c620532
CPU threads: 4; OS: Linux 4.8; UI render: default; VCL: gtk2; 
Locale: ca-ES (ca_ES.UTF-8); Calc: group

Khaled should be able to comment more on this...

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

V Stuart Foote  changed:

   What|Removed |Added

 CC||vstuart.fo...@utsa.edu
   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=10
   ||3322
 Blocks||71732

--- Comment #3 from V Stuart Foote  ---
Is this another manifestation of needing floating point glyph positioning for
enhancement bug 103322?


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=71732
[Bug 71732] [META] Bugs related to text rendering, typography and font features
in LO
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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #2 from Munzir Taha  ---
Created attachment 132021
  --> https://bugs.documentfoundation.org/attachment.cgi?id=132021=edit
PDF export also has the same issue

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[Libreoffice-bugs] [Bug 106653] RTL Arabic justified text has some gaps between characters

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=106653

--- Comment #1 from Munzir Taha  ---
Created attachment 132020
  --> https://bugs.documentfoundation.org/attachment.cgi?id=132020=edit
libO introduced gaps in some words

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