[Fedora-i18n-bugs] [Bug 694724] New: [kn_IN] 0CB0 + 200D + 0CCD + 0C95+ 0CBE consonant is wrongly rendering
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Summary: [kn_IN] 0CB0 + 200D + 0CCD + 0C95+ 0CBE consonant is wrongly rendering
https://bugzilla.redhat.com/show_bug.cgi?id=694724
Summary: [kn_IN] 0CB0 + 200D + 0CCD + 0C95+ 0CBE consonant is wrongly rendering Product: Fedora Version: rawhide Platform: Unspecified OS/Version: Unspecified Status: NEW Severity: unspecified Priority: unspecified Component: lohit-kannada-fonts AssignedTo: psatpute@redhat.com ReportedBy: svenkate@redhat.com QAContact: extras-qa@fedoraproject.org CC: fonts-bugs@lists.fedoraproject.org, psatpute@redhat.com, i18n-bugs@lists.fedoraproject.org Classification: Fedora Story Points: ---
Created attachment 490712 --> https://bugzilla.redhat.com/attachment.cgi?id=490712 Actual and correct rendering
Description of problem: ra+ ZWJ+ halanth + consonant + aa (0CB0 + 200D + 0CCD + 0C95+ 0CBE) is wrongly rendering
Version-Release number of selected component (if applicable): lohit-kannada-fonts-2.4.5-4.fc14.noarch
How reproducible: Every time
Steps to Reproduce: 1.Open any text editor (say gedit) 2.Input following raw code key sequence: 0CB0 + 200D + 0CCD + 0C95+0CBE 3.Look at the resulting glyph
Actual results: Shown in the attachment
Expected results: Shown in the attachment
Additional info: This was tested with following rendering engines: libicu-4.4.1-6.fc14.x86_64 qt-4.7.1-17.fc14.x86_64 pango-1.28.1-5.fc14.x86_64
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Shankar Prasad svenkate@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Keywords| |i18n Platform|Unspecified |x86_64 OS/Version|Unspecified |Linux
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--- Comment #1 from Shankar Prasad svenkate@redhat.com 2011-04-08 02:48:27 EDT --- Created attachment 490713 --> https://bugzilla.redhat.com/attachment.cgi?id=490713 Using different rendering engines
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Aravinda hallimanearavind@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |hallimanearavind@gmail.com
--- Comment #2 from Aravinda hallimanearavind@gmail.com 2011-11-02 16:10:05 EDT --- Hi Pravin,
Got some more clue but still confused about ZWJ and ZWNJ issue.
Kedage font has no issues when tested with ICU rendering engine(XeLaTeX and LibreOffice).
Steps: 1. Copy ರ್ಯಾಂಕ್ to OpenOffice/LibreOffice 2. Select text and change font to Kedage and check. 3. Select text and change font to Lohit Kannada and check.
Examined Kedage fonts and Lohit Kannada fonts to see the difference between two fonts about ZWJ implementation. Kedage font didn't have glyph for ZWJ(empty glyph).
So for testing I cleared the ZWJ glyph(Right click and clear) and then generated the font with different name. Now Lohit Kannada also works fine with ICU rendering engine.
But all Kannada fonts fail to render properly in Pango and QT. (As of now works in ICU) Haven't tested in Harfbuzz because of some Harfbuzz compilation issue in my machine.
Please suggest how we can proceed to fix this issue.
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Pravin Satpute psatpute@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |aalam@redhat.com
--- Comment #3 from Pravin Satpute psatpute@redhat.com 2011-11-03 01:01:38 EDT --- Kedage fails in harfbuzz-ng as well Problem in pango and qt as well. Removing character is not correct solution.
any idea about windows, is it work there?
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--- Comment #4 from Aravinda hallimanearavind@gmail.com 2011-11-03 01:22:59 EDT --- (In reply to comment #3)
Kedage fails in harfbuzz-ng as well Problem in pango and qt as well. Removing character is not correct solution.
any idea about windows, is it work there?
@Pravin, I didn't mentioned the solution, I removed the glyph only to confirm the behaviour of ICU and I was curious about how Kedage font is rendering.
Awaiting pointers to fix this issue.
Right now, don't have the windows machine, will get the screen shot and upload.
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--- Comment #5 from Aravinda hallimanearavind@gmail.com 2011-11-03 03:53:46 EDT --- Created attachment 531502 --> https://bugzilla.redhat.com/attachment.cgi?id=531502 ZWJ in Windows XP
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--- Comment #6 from Aravinda hallimanearavind@gmail.com 2011-11-03 03:54:17 EDT --- Created attachment 531503 --> https://bugzilla.redhat.com/attachment.cgi?id=531503 ZWJ in Win 7
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--- Comment #7 from Aravinda hallimanearavind@gmail.com 2011-11-03 03:54:35 EDT --- In Windows before PR37(http://unicode.org/review/pr-37.pdf) announced they adopted ZWNJ to render these cases. Fixed this issue in Windows 7. So tested both cases in Windows. Enclosed the screenshots from Win XP and Win7.
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--- Comment #8 from Pravin Satpute psatpute@redhat.com 2011-11-03 05:35:23 EDT --- Me too tested in Windows vista, but lohit and default windows font does not give correct behaviour.
Since it is working in "Windows 7" i am sure we need fix from rendering engine side.
kindly report bug @ http://bugs.icu-project.org/trac/newticket , might be you know already regarding harfbuzz-ng project. Its still under development i will add this test case into it.
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--- Comment #9 from Omshivaprakash omshivaprakash@gmail.com 2011-11-05 13:43:45 EDT --- My investigation on this issue using Tunga on LibreOffice
1. Typing the following key sequence using kn-itrans renders ರ್ಯಾಂಕ್ just fine.
Key sequence - ra + zwj (shift + space) + .h (for halant) + yaaMk
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Fedora Update System updates@fedoraproject.org changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |MODIFIED
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--- Comment #10 from Fedora Update System updates@fedoraproject.org 2012-03-01 06:02:57 EST --- lohit-oriya-fonts-2.5.1-1.fc17,lohit-kannada-fonts-2.5.1-1.fc17,lohit-punjabi-fonts-2.5.1-1.fc17,lohit-telugu-fonts-2.5.1-1.fc17,lohit-malayalam-fonts-2.5.1-1.fc17,lohit-gujarati-fonts-2.5.1-1.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/lohit-oriya-fonts-2.5.1-1.fc17,lohit...
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--- Comment #11 from Fedora Update System updates@fedoraproject.org 2012-03-01 06:06:42 EST --- lohit-gujarati-fonts-2.5.1-1.fc16,lohit-malayalam-fonts-2.5.1-1.fc16,lohit-telugu-fonts-2.5.1-1.fc16,lohit-punjabi-fonts-2.5.1-1.fc16,lohit-kannada-fonts-2.5.1-1.fc16,lohit-oriya-fonts-2.5.1-1.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/lohit-gujarati-fonts-2.5.1-1.fc16,lo...
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Fedora Update System updates@fedoraproject.org changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|MODIFIED |ON_QA
--- Comment #12 from Fedora Update System updates@fedoraproject.org 2012-03-01 19:59:24 EST --- Package lohit-oriya-fonts-2.5.1-1.fc17, lohit-kannada-fonts-2.5.1-1.fc17, lohit-punjabi-fonts-2.5.1-1.fc17, lohit-telugu-fonts-2.5.1-1.fc17, lohit-malayalam-fonts-2.5.1-1.fc17, lohit-gujarati-fonts-2.5.1-1.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing lohit-oriya-fonts-2.5.1-1.fc17 lohit-kannada-fonts-2.5.1-1.fc17 lohit-punjabi-fonts-2.5.1-1.fc17 lohit-telugu-fonts-2.5.1-1.fc17 lohit-malayalam-fonts-2.5.1-1.fc17 lohit-gujarati-fonts-2.5.1-1.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-2820/lohit-oriya-fonts-2... then log in and leave karma (feedback).
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Pravin Satpute psatpute@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ON_QA |ASSIGNED
--- Comment #13 from Pravin Satpute psatpute@redhat.com 2012-03-02 01:15:15 EST --- I have not fixed this bug yet. This is look like from rendering engine side.
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Fedora Update System updates@fedoraproject.org changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |ON_QA
--- Comment #14 from Fedora Update System updates@fedoraproject.org 2012-03-06 14:37:02 EST --- Package lohit-gujarati-fonts-2.5.1-1.fc16, lohit-malayalam-fonts-2.5.1-1.fc16, lohit-telugu-fonts-2.5.1-1.fc16, lohit-punjabi-fonts-2.5.1-1.fc16, lohit-kannada-fonts-2.5.1-1.fc16, lohit-oriya-fonts-2.5.1-1.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing lohit-gujarati-fonts-2.5.1-1.fc16 lohit-malayalam-fonts-2.5.1-1.fc16 lohit-telugu-fonts-2.5.1-1.fc16 lohit-punjabi-fonts-2.5.1-1.fc16 lohit-kannada-fonts-2.5.1-1.fc16 lohit-oriya-fonts-2.5.1-1.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-3083/lohit-gujarati-font... then log in and leave karma (feedback).
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Pravin Satpute psatpute@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ON_QA |ASSIGNED
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #15 from Pravin Satpute psatpute@redhat.com --- I did some more analysis on this.
1. This combination works proper on Windows with Tunga fonts. 2. Lohit Kannada fails with Windows8, so i think we need fix in Lohit Kannada.
But same time Tunga font fails with Harfbuzz as well, so we need to wait for Harfbuzz to fix this. Once that done we can add some specific rules in Lohit to handle this sequence.
Unicode has entry for this behaviour:- Unicode Chapter 9-> Kannada -> Consonant Clusters Involving RA provides more information on same.
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
Pravin Satpute psatpute@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- External Bug ID| |Sourceware 58714
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #16 from Aravinda hallimanearavind@gmail.com --- I fixed this issue in Gubbi font. Works fine with Harfbuzz. https://github.com/downloads/aravindavk/Gubbi/Gubbi-1.3.zip
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #17 from Pravin Satpute psatpute@redhat.com --- Aravinda. That's nice.
As per Unicode this combination only allowed for Ra, you have added all consonants for this one. Do you have any other reference or uses for this?
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #18 from Aravinda hallimanearavind@gmail.com --- Pravin, You are right. We need that rule only for Ra. I will modify the rule accordingly.
I didn't find any reference to change this, I used hb-shape to see the reordering so that I will understand which rule is failing or which rule is required.
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #19 from Pravin Satpute psatpute@redhat.com --- Thanks for confirmation, I will fix this in lohit kannada. Was just wondering how many ardha_cons shapes need to be added in kannada.
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #20 from Pravin Satpute psatpute@redhat.com --- I have committed changes in lohit upstream. Aravinda, it will be very helpful if you can test it once and let me know what is remaining.
Basically i have added rule for so "u0CB0 ZWJ (All Matra)" should give expected output now.
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #21 from Aravinda hallimanearavind@gmail.com --- Pravin, Tested the modified font now. Works great in Harfbuzz and m17n. Still has issues in KDE, Pango and ICU. But the issue is fixed from Font side. We can close this bug.
Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=694724
--- Comment #22 from Pravin Satpute psatpute@redhat.com --- Thanks Aravinda for confirmation. Hoping soon harfbuzz will be integrated with QT and ICU.
https://bugzilla.redhat.com/show_bug.cgi?id=694724
Pravin Satpute psatpute@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |CLOSED Resolution|--- |RAWHIDE Last Closed| |2013-05-31 06:57:15
--- Comment #24 from Pravin Satpute psatpute@redhat.com --- I am seeing this one works fine with Harfbuzz 0.9.17 as well with master version.
One bug is already open in upstream against Harfbuzz https://bugs.freedesktop.org/show_bug.cgi?id=58714
Closing this.
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