[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

Khaled Hosny  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |WORKSFORME

--- Comment #9 from Khaled Hosny  ---
Resolving per the comment above (the black box is an error in the XeTeX
document).

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

--- Comment #8 from eisa01  ---
Created attachment 155487
  --> https://bugs.documentfoundation.org/attachment.cgi?id=155487=edit
PDF export in 6.4 nightly

This has greatly improved, the only difference I can see to the Xetex output is
the black glyph at the end of the document

Version: 6.4.0.0.alpha1+
Build ID: 80109586e6cb6d3e2e0a53a9079c3125ec9b8368
CPU threads: 4; OS: Mac OS X 10.14.6; UI render: default; VCL: osx; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

--- Comment #7 from QA Administrators  ---
** Please read this message in its entirety before responding **

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
http://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:
https://kiwiirc.com/nextclient/irc.freenode.net/#libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

Khaled Hosny  changed:

   What|Removed |Added

 CC||khaledho...@eglug.org
 Blocks||71732
 Depends on|89870   |

--- Comment #6 from Khaled Hosny  ---
It looks like what is happening here is that Graohite shaping is failing and we
are getting fallback shaping. It is not clear if this is a font bug, Graphite
bug or LibreOffice bug, some deeper debugging is needed.

It seems bug 89870 does not make any difference here, so I’m dropping the
dependency.


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
https://bugs.documentfoundation.org/show_bug.cgi?id=89870
[Bug 89870] Unify text layout to use HarfBuzz on all platforms
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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

Phil Krylov  changed:

   What|Removed |Added

 Depends on||89870


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=89870
[Bug 89870] Unify text layout to use HarfBuzz on all platforms
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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

--- Comment #5 from QA Administrators  ---
** Please read this message in its entirety before responding **

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 on a currently supported version of
LibreOffice 
(5.1.5 or 5.2.1  https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the version of
LibreOffice and 
your operating system, and any changes you see in the bug behavior

If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave 
a short comment that includes your version of LibreOffice and Operating System

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)

http://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:
http://webchat.freenode.net/?channels=libreoffice-qa

Thank you for helping us make LibreOffice even better for everyone!

Warm Regards,
QA Team

MassPing-UntouchedBug-20160920

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=52575

--- Comment #4 from Joel Madero jmadero@gmail.com ---
** Please read this message in its entirety before responding **

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 on a currently supported version of
LibreOffice (4.4.2 or later)
   https://www.libreoffice.org/download/

   If the bug is present, please leave a comment that includes the version of
LibreOffice and your operating system, and any changes you see in the bug
behavior

 If the bug is NOT present, please set the bug's Status field to
RESOLVED-WORKSFORME and leave a short comment that includes your version of
LibreOffice and Operating System

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)

http://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:
http://webchat.freenode.net/?channels=libreoffice-qa

Thank you for your help!

-- The LibreOffice QA Team This NEW Message was generated on: 2015-05-02

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52575

--- Comment #3 from Shriramana Sharma samj...@gmail.com ---
Created attachment 93258
  -- https://bugs.freedesktop.org/attachment.cgi?id=93258action=edit
Results of testing on LibO 4.2 release

I have tested this bug with the recent LibO 4.2 release. The behaviour has
somewhat changed. There is no more doubling of the candrabindu as earlier
reported. However, the character is being spaced in many cases and disappears
in some cases.

It is true that the relevant glyph in the font has a non-zero advance width.
However as per native Graphite behaviour as seen via HarfBuzz NG and XeTeX, an
attached+positioned glyph should lose any advancewidth it is given in the font
-- at least that is what I have understood/assumed so far from the behaviour
observed via HBNG/Gr and XeTeX, though whether that is appropriate is open to
debate.

So I even tried removing the advancewidth of the candrabindu (i.e. making it
zero) but even then the spacing persists.

And even this does not explain why the glyph disappears in some of the cases...

Should the bug summary be updated since the behaviour has changed?

I am somehow guessing that when shaping a text run which involves a Graphite
font, LibO is making some assumptions about the spacing, combining or other
properties of the characters instead of simply passing the encoded string and
the font information to the Graphite library and following the output glyph
order and positions. 

In the case of OpenType, perhaps it is necessary for the application calling
the shaping library to make such assumptions, but all bets are off when it
comes to Graphite since for taking care of minority and unusual orthographic
requirements, Graphite font programmers ask for non-standard spacing and other
such behaviour. 

So at least when it comes to Gr, LibO should not make any assumptions about
character properties and just send in the text plus font info and render as
Graphite tells. It would seem that this is what XeTeX does, and we (users of
rare orthographies) are happy with that.

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52575

--- Comment #2 from Shriramana Sharma samj...@gmail.com ---
Bug persists as of LibO 4.1.1.2 installed from DEBs on Kubuntu Precise.

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[Libreoffice-bugs] [Bug 52575] 0310 COMBINING CANDRABINDU double-rendered in Graphite font

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52575

Joel Madero jmadero@gmail.com changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Severity|normal  |major
   Priority|medium  |high
 CC||jmadero@gmail.com
Version|4.0.0.0.alpha0+ Master  |3.6.2.2 release
 Ever confirmed|0   |1

--- Comment #1 from Joel Madero jmadero@gmail.com ---
Confirmed, I think we have quite a few issues with Indian languages as I've
seen this with Telugu as well.

Changing:

Version - 3.6.3.2, I have confirmed that the problem exists at least to this
point, probably indefinitely into the past

New (Confirmed)
Major (prevents entire languages from being used correctly in LibO)
High (default for major)

This bug really makes it so entire populations cannot use LibreOffice
efficiently or effectively. Hopefully someone tackles this one

Related: https://bugs.freedesktop.org/show_bug.cgi?id=48303

I closed that one but maybe it should be reopened - need independent
confirmation

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