[Bug 829143] New: Fix Rendering of Letter RA,RI,RII per GoTN standards

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=829143

            Bug ID: 829143
        QA Contact: extras-qa at fedoraproject.org
          Severity: unspecified
           Version: rawhide
          Priority: unspecified
                CC: fonts-bugs at lists.fedoraproject.org,
                    i18n-bugs at lists.fedoraproject.org, psatpute at redhat.com
          Assignee: psatpute at redhat.com
           Summary: Fix Rendering of Letter RA,RI,RII per GoTN standards
        Regression: ---
      Story Points: ---
    Classification: Fedora
                OS: Unspecified
          Reporter: srik.lak+public at gmail.com
              Type: Bug
     Documentation: ---
          Hardware: Unspecified
        Mount Type: ---
            Status: NEW
         Component: lohit-tamil-fonts
           Product: Fedora

Description of problem:

Letter RA (ர, U+0BB0) should not use shortened form visually similar AA (◌ா,
U+0BBE) for ர்,ரி,ரீ per GoTN procurement standards.

Version-Release number of selected component (if applicable):
2.50

How reproducible:
Always

Steps to Reproduce:
1. View http://translatewiki.net/wiki/User:Logicwiki/Sandbox?setlang=ta 
2. See row for ர் 0BB0 0BCD on the unicode table in Lohit-Tamil font to see how
Lohit-Tamil renders . (default when page loads with webfonts.

Actual results:
ர்,ரி,ரீ without the / in the bottom part of the glyph.

Expected results:
ர்,ரி,ரீ with the / in the bottom part of the glyph.
http://www.tn.gov.in/gosdb/gorders/it/it_e_29_2010.pdf See last page of pdf for
expected rendering.

Additional info:

http://www.tn.gov.in/gosdb/gorders/it/it_e_29_2010.pdf
Appendix A – Valid Unicode Tamil Character Sequences Page 4 of 9 

Tamil Vowel sign AA (◌ா, U+0BBE) and Tamil Letter RA (ர, U+0BB0) shall be 
treated as distinct from each other. As recommended by the Department of Tamil 
Development, Government of Tamil Nadu the letters , ,  not be rendered as ,
    ,

 (See letter No. E1/14702/99, dated 20.7.2000 from Department of Tamil 
Development enclosed as part of this appendix)

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