[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

QA Administrators  changed:

   What|Removed |Added

 Resolution|--- |INSUFFICIENTDATA
 Status|NEEDINFO|RESOLVED

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #15 from QA Administrators  ---
Dear Hiunn-hué,

Please read this message in its entirety before proceeding.

Your bug report is being closed as INSUFFICIENTDATA due to inactivity and
a lack of information which is needed in order to accurately
reproduce and confirm the problem. We encourage you to retest
your bug against the latest release. If the issue is still
present in the latest stable release, we need the following
information (please ignore any that you've already provided):

a) Provide details of your system including your operating
   system and the latest version of LibreOffice that you have
   confirmed the bug to be present

b) Provide easy to reproduce steps – the simpler the better

c) Provide any test case(s) which will help us confirm the problem

d) Provide screenshots of the problem if you think it might help

e) Read all comments and provide any requested information

Once all of this is done, please set the bug back to UNCONFIRMED
and we will attempt to reproduce the issue. Please do not:

a) respond via email 

b) update the version field in the bug or any of the other details
   on the top section of our bug tracker

Warm Regards,
QA Team

MassPing-NeedInfo-FollowUp

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #14 from QA Administrators  ---
Dear Hiunn-hué,

This bug has been in NEEDINFO status with no change for at least
6 months. Please provide the requested information as soon as
possible and mark the bug as UNCONFIRMED. Due to regular bug
tracker maintenance, if the bug is still in NEEDINFO status with
no change in 30 days the QA team will close the bug as INSUFFICIENTDATA
due to lack of needed information.

For more information about our NEEDINFO policy please read the
wiki located here:
https://wiki.documentfoundation.org/QA/Bugzilla/Fields/Status/NEEDINFO

If you have already provided the requested information, please
mark the bug as UNCONFIRMED so that the QA team knows that the
bug is ready to be confirmed.

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

Warm Regards,
QA Team

MassPing-NeedInfo-Ping

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Xisco Faulí  changed:

   What|Removed |Added

 Ever confirmed|0   |1
 Status|UNCONFIRMED |NEEDINFO

--- Comment #13 from Xisco Faulí  ---
Hi Hiunn-hué,
Reading your last comment 12, it seems you need to remove old chinese and
Tangur fonts in order to reproduce this issue.
Is it really a real user case?
Setting to NEEDINFO meanwhile...

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Volga  changed:

   What|Removed |Added

 OS|All |Linux (All)

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Hiunn-hué  changed:

   What|Removed |Added

 Status|NEEDINFO|UNCONFIRMED
 Ever confirmed|1   |0

--- Comment #12 from Hiunn-hué  ---

Hi,

sorry, it has been a while since I reported this issue, and the steps in
description requires uninstalling all chinese fonts, which is inconvenient for
me, so I take the steps in comment 4 to reproduce.

I've tested on both windows 10 and elementary os 0.4 (based on Ubuntu 16.04.3
LTS), and the problem is still there.

Please see the attached odt and pdf.


The odt file is created with LibreOffice 5.4.0.3 on Win 10.  And then I opened
it with 6.0.0.0.alpha0+ on Win 10, and 5.4.2.2 and 6.0.0.0.alpha0+ on
elementary OS.  The results are all the same (see pdf).

Note: For unknown reason, opening this odt file makes LibreOffice for Linux to
slow down or even crash.


=-=-=-=-=-=


As for the Tangut characters, they are in the same situation.

Maybe I didn't make myself clear enough ...

When testing, we have to remove all Tangut fonts, and make sure our system can
*NOT* display Tangut characters, rather than installing Tangut fonts.

Since there's no font that supports Tangut characters, they should be displayed
as Tofus (a question mark or a cross in a box, or simply a box), one by one,
not overlapping with each other.

You can try the attached odt file (reproduce_hangeul), follow the steps, just
replace the Korean character with Tangut. The result should be the same.



By the way, when testing with Tangut, I found a issue that might be related,
but I don't know if I should open a new bug report for it...


Steps to reproduce:

 1. Make sure your system does NOT display Tangut characters.

 2. Open a new odt file, and past some Tangut characters. So you see Tofus.

 3. Input a latin alphabet, "a" for example, in the beginning of the line.

 4. "a" stays, and Tofus disappear.

 5. expected: both "a" and Tangut characters are displayed, and looks like
> a□□□

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #11 from Hiunn-hué  ---
Created attachment 136906
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136906=edit
reproduce_comment4_result

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #10 from Hiunn-hué  ---
Created attachment 136905
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136905=edit
reproduce_comment4

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #9 from Volga  ---
Created attachment 136902
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136902=edit
Screenshot on Windows (2)

My test result for above attachment.

版本：5.4.2.2 (x64)
Build ID：22b09f6418e8c2d508a9eaf86b2399209b0990f4
CPU 线程：4; 操作系统：Windows 6.19; UI 渲染：默认; 
区域语言：zh-CN (zh_CN); Calc: group

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #8 from Volga  ---
Created attachment 136901
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136901=edit
demo_odt2

Here is my test file for Tangut. You can try to download and install Tangut
Yinchuan font for test.

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Xisco Faulí  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEEDINFO
 CC||xiscofa...@libreoffice.org
 Ever confirmed|0   |1

--- Comment #7 from Xisco Faulí  ---
> PS: Tangut characters also trigger this bug, when the system has no Tangut
> fonts installed. But only on 5.3.2.2, not on 5.4.0.0.alpha0+.

Could you please try to reproduce it with version 5.4.2 of LibreOffice from
https://www.libreoffice.org/download/libreoffice-fresh/ ?
I have set the bug's status to 'NEEDINFO'. Please change it back to
'UNCONFIRMED' if the bug is still present in the latest version.

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #6 from Volga  ---
Created attachment 136860
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136860=edit
Screenshot on Windows

This problem does not affect Windows. Version 5.4.2.

版本：5.4.2.2 (x64)
Build ID：22b09f6418e8c2d508a9eaf86b2399209b0990f4
CPU 线程：4; 操作系统：Windows 6.19; UI 渲染：默认; 
区域语言：zh-CN (zh_CN); Calc: group

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

--- Comment #5 from Volga  ---
It seems to me our font loader does not well performanced for fallback fonts,
especially for CJK fonts.

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Hiunn-hué  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=10
   ||7487

--- Comment #4 from Hiunn-hué  ---
Another way to reproduce:

 1. Make sure that your system does NOT display Korean characters (Hangeul).

 2. Input or paste some common Chinese/Japanese characters.

 3. Insert a Korean character in the middle.

 4. Apply non-cjk fonts to all characters, such as Arial or Liberation Sans.

 5. The bug appears.


PS: Tangut characters also trigger this bug, when the system has no Tangut
fonts installed. But only on 5.3.2.2, not on 5.4.0.0.alpha0+.

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[Libreoffice-bugs] [Bug 107383] Characters overlap when not supported by fallback font (CJK)

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=107383

Hiunn-hué  changed:

   What|Removed |Added

Summary|Characters overlap when not |Characters overlap when not
   |supported by fallback font  |supported by fallback font
   ||(CJK)

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