[Bug 160218] New: Many rendering bugs in Malayalam

[Praveen A]

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http://bugs.kde.org/show_bug.cgi?id=160218         
           Summary: Many rendering bugs in Malayalam
           Product: kdelibs
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: qt
        AssignedTo: kdelibs-bugs kde org
        ReportedBy: pravi.a gmail com


Version:           4.4.0~beta1 (using Devel)
Installed from:    Compiled sources
Compiler:          gcc (GCC) 4.2.3 (Debian 4.2.3-1)  
OS:                Linux

These are the cases for which qt does not render Malayalam correctly and a patch is provided
1. traditional script conjuncts with postbase matra
2. Malayalam vattu ra glyph for reformed script
3. chillu + postbase consonant + virama
3. Malayalam SAMVRUTHOKARA

Also Malayalam needs to process ZWJ for rendering chillus (pure consonants - combination of consonant + halant + zwj). Pango had a flag SF_PROCESS_ZWJ for this.

Other references:

1. http://bugzilla.gnome.org/show_bug.cgi?id=504810
2. http://bugs.icu-project.org/trac/ticket/6108
3. https://bugzilla.redhat.com/show_bug.cgi?id=242016