[Bug 543906] New: Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Summary: Conjunct 'sple' (as in display) is not rendered correctly with Meera
font

https://bugzilla.redhat.com/show_bug.cgi?id=543906

           Summary: Conjunct 'sple' (as in display) is not rendered
                    correctly with Meera font
           Product: Fedora
           Version: 12
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: medium
          Priority: low
         Component: smc-fonts
        AssignedTo: psatpute(a)redhat.com
        ReportedBy: parimbra(a)redhat.com
         QAContact: extras-qa(a)fedoraproject.org
                CC: fedora-fonts-bugs-list(a)redhat.com,
                    psatpute(a)redhat.com, rajeeshknambiar(a)gmail.com,
                    fedora-i18n-bugs(a)redhat.com
    Classification: Fedora


Description of problem:
Meera font shipped with Fedora does not display the conjunct 'sple' correctly.
It is working correctly with other fonts and same font in debian.

Version-Release number of selected component (if applicable):


How reproducible:

always
Steps to Reproduce:
1. open gedit
2. select Meera font
3. type ഡിസ്പ്ലെ (സ്പ്ലെ = unicode raw 0d38, 0d4d, 0d2a, 0d4d, 0d32)

Actual results:
സ്പ and ലെ displayed separately

Expected results:

സ് and പ്ലെ rendered separately

Additional info:

https://savannah.nongnu.org/bugs/index.php?28043

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[Bug 543906] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #1 from Praveen Arimbrathodiyil <parimbra(a)redhat.com&gt;  2009-12-03
08:26:57 EDT ---
Created an attachment (id=375771)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=375771)
സ്പ്ലെ (sple) in debian and fedora

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Ani Peter <apeter(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |i18n
                 CC|                            |apeter(a)redhat.com
            Summary|Conjunct 'sple' (as in      |[ml_IN] Conjunct 'sple'
(as
                   |display) is not rendered    |in display) is not rendered
                   |correctly with Meera font   |correctly with Meera font




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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #2 from Pravin Satpute <psatpute(a)redhat.com&gt;  2009-12-04 03:30:44 EDT
---
can you update which pango version you are using? and also smc-fonts version

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #3 from Praveen Arimbrathodiyil <parimbra(a)redhat.com&gt;  2009-12-04
03:50:02 EDT ---
pravi@savannah:~$ apt-cache policy libpango1.0-0
libpango1.0-0:
  Installed: 1.26.0-1
  Candidate: 1.26.1-1

I updated it to 1.26.1-1 now. It is working correctly 

Meera font is from
http://ftp.de.debian.org/debian/pool/main/t/ttf-indic-fonts/ttf-indic-fon...

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Pravin Satpute <psatpute(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED




--- Comment #4 from Pravin Satpute <psatpute(a)redhat.com&gt;  2009-12-04 04:04:10 EDT
---
dont know which version of meera fonts included in ttf-indic-fonts_0.5.6, but
when i installed fonts from there tarball its working properly on fedora 12 as
well.

We are using
http://mirrors.igsobe.com/nongnu/smc/fonts/malayalam-fonts-04.2.zip in fedora,
which is latest upstream version.

can you check which version of malayalam-fonts ttf-indic-fonts_0.5.6 uses, so
we can add that in upstream and update package

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #5 from Pravin Satpute <psatpute(a)redhat.com&gt;  2009-12-04 05:16:24 EDT
---
while investigating more,
This bug is introduced in migration from malayalam-fonts-04.1.zip to
malayalam-fonts-04.2.zip

since things work well with malayalam-fonts-04.1.zip

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #6 from Praveen Arimbrathodiyil <parimbra(a)redhat.com&gt;  2009-12-04
07:44:30 EDT ---
conjunct 'spa' is changed its property from 'pres' to 'akhn' from
04.1 to 04.2.
See attachments.

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #7 from Praveen Arimbrathodiyil <parimbra(a)redhat.com&gt;  2009-12-04
07:51:13 EDT ---
Created an attachment (id=376068)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=376068)
fontforge glyphinfo/Ligature for conjunct spa in Meera 04.1

'pres' Pre Base Substitutions in Malayalam lookup 4 subtable s1xxp1

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #8 from Praveen Arimbrathodiyil <parimbra(a)redhat.com&gt;  2009-12-04
07:53:06 EDT ---
Created an attachment (id=376069)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=376069)
fontforge glyphinfo/Ligature for conjunct spa in Meera 04.2

'akhn' Akhand in Malayalam lookup 0 subtable s1 xx p1

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Pravin Satpute <psatpute(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|psatpute(a)redhat.com         |nkumar(a)redhat.com

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #9 from Naveen Kumar <nkumar(a)redhat.com&gt; 2010-04-06 08:33:18 EDT ---
Created an attachment (id=404692)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=404692)
Proposed Solution in ttf

We added 4 rules 

blwf: xx l3 -> l4
ccmp: s1p1 -> s1 xx p1
calt: s1p1 xx l3 -> s1p1 l4 (blwf)
calt: s1p1 l4 -> s1 xx p1 l4 (ccmp)

This works for Pango and should also work on Uniscribe, but not on ICU and
QT(Harfbuzz).

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Suresh P <psuresh(a)gmx.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |psuresh(a)gmx.com

--- Comment #10 from Suresh P <psuresh(a)gmx.com&gt; 2010-04-06 12:20:00 EDT ---
(In reply to comment #9)
>  Created an attachment (id=404692) 
 -->
(https://bugzilla.redhat.com/attachment.cgi?id=404692) [details]
>  Proposed Solution in ttf
>  
>  We added 4 rules 
>  
>  blwf: xx l3 -> l4 
This rule will make the l4 glyph appear below any Consonant/Conjunct followed
by xx l3(eg. ഡ്ല, യ്ല, റ്റ്ല etc.) and it will go against traditional
orthography. Which means more contextual rules.

>  ccmp: s1p1 -> s1 xx p1
>  calt: s1p1 xx l3 -> s1p1 l4 (blwf)
>  calt: s1p1 l4 -> s1 xx p1 l4 (ccmp)
>  
>  This works for Pango and should also work on Uniscribe, but not on ICU and
>  QT(Harfbuzz). 
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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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--- Comment #11 from Naveen Kumar <nkumar(a)redhat.com&gt; 2010-04-22 08:57:15 EDT ---
Created an attachment (id=408315)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=408315)
fix only for pango

Should work in Pango now...

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--- Comment #12 from Naveen Kumar <nkumar(a)redhat.com&gt; 2010-04-22 09:40:21 EDT ---
This needs ccmp feature, same is requested for icu and Harfbuzz:

https://bugs.freedesktop.org/show_bug.cgi?id=27485

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Naveen Kumar <nkumar(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|12                          |rawhide

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Fedora Admin XMLRPC Client <fedora-admin-xmlrpc(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|nkumar(a)redhat.com           |psatpute(a)redhat.com

--- Comment #13 from Fedora Admin XMLRPC Client <fedora-admin-xmlrpc(a)redhat.com&gt;
2011-06-16 04:51:28 EDT ---
This package has changed ownership in the Fedora Package Database.  Reassigning
to the new owner of this component.

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Harshula Jayasuriya <harshula(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harshula(a)redhat.com

--- Comment #14 from Harshula Jayasuriya <harshula(a)redhat.com&gt; 2011-10-17 22:50:25
EDT ---
Hi All,

Pango, Harfbuzz and Windows layout engine all appear to support CCMP for Indic.
However, ICU still does not. The ICU developers are under the incorrect
assumption that the Windows layout engine does not support CCMP for Indic.

So, in terms of CCMP support for Indic, it looks like we just need ICU fixed:
http://bugs.icu-project.org/trac/ticket/7601

cya,
#

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--- Comment #15 from Pravin Satpute <psatpute(a)redhat.com&gt; 2011-10-18 05:21:06 EDT
---
ccmp is very important feature, it gives good flexibility to font developers.

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Harshula Jayasuriya <harshula(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends on|                            |747193

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Bug 543906 depends on bug 747193, which changed state.

Bug 747193 Summary: ICU does not support CCMP for Indic fonts
https://bugzilla.redhat.com/show_bug.cgi?id=747193

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
             Status|ASSIGNED                    |CLOSED
         Resolution|                            |RAWHIDE

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Pravin Satpute <psatpute(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |parimbra(a)redhat.com
              Flags|                            |needinfo?(parimbra(a)redhat.c
                   |                            |om)

--- Comment #17 from Pravin Satpute <psatpute(a)redhat.com&gt; ---
(In reply to Naveen Kumar from comment #11)
>  Created attachment 408315 [details]
>  fix only for pango
>  
>  Should work in Pango now... 
Please update this bug by testing against latest harfbuzz if its still not
giving expected result test it with proposed solution by Naveen kumar.

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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https://bugzilla.redhat.com/show_bug.cgi?id=543906



--- Comment #19 from Pravin Satpute <psatpute(a)redhat.com&gt; ---
Is this bug still exits with latest version of harfbuzz and smc-fonts?

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Pravin Satpute <psatpute(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|needinfo?(parimbra(a)redhat.c |
                   |om)                         |



--- Comment #20 from Pravin Satpute <psatpute(a)redhat.com&gt; ---
Created attachment 890709
  --> https://bugzilla.redhat.com/attachment.cgi?id=890709&action=edit
Image showing bug still exist

Reviewed this issue with Ani last week. Issue is still pending and need
contextual rules as mentioned by Naveen earlier.

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[Bug 543906] [ml_IN] Conjunct 'sple' (as in display) is not rendered correctly with Meera font

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Pravin Satpute <psatpute(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |CLOSED
         Resolution|---                         |UPSTREAM
        Last Closed|                            |2014-04-29 06:37:27



--- Comment #21 from Pravin Satpute <psatpute(a)redhat.com&gt; ---
Upstream bug available on https://savannah.nongnu.org/bugs/index.php?28043

Closing as a upstream.

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