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keeleysam / tenfourfox

Automatically exported from code.google.com/p/tenfourfox
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Devanagari (Indic) not correctly rendered #127

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
In TenFourFox 9.0 on OS X 10.4.11 on a PowerPC G4 (7450 "G4e") I experience the 
problem that Devanagari script is not displayed correctly.  E.g. the resorting 
of characters is not working.

In the following example कि, I see the bow above the line to be starting 
right of the क character, but it should be ending there.  The ि character 
is actually written after क but should be resorted to be displayed before it.

This is also explained on the following website, see the graphical examle in 
the the "Devanagari" row in the table within the "Check for existing support" 
chapter: 
<http://en.wikipedia.org/wiki/Help:Multilingual_support_%28Indic%29#Check_for_ex
isting_support>

The same page states in the OS X section: "...it will be displayed by Firefox 
after 4.0 which fully supports rearrangement and substitution for 
OpenType-based fonts by using HarfBuzz".  Already Firefox 3.6.16 (so earlier 
than 4.0) on the same machine displays the text correctly without any special 
settings.

The rendering works also fine on the same machine using Safari 4.1.3 without 
any special settings. Firefox 9.0.1 on Windows XP also renders fine, 
unfortunately I don't have the possibility to test a current Firefox on a newer 
OS X.

Thank you for looking into that and for all the other great work!

Martin

Original issue reported on code.google.com by gm...@izac.de on 28 Jan 2012 at 11:36

GoogleCodeExporter commented 9 years ago 
Please read TechnicalDifferences and issue 5. This is an acknowledged issue 
which we mention on the release notes. !HarfBuzz does support rearrangement, 
but not with AAT fonts; only Core Text can do this, which we don't support. If 
you absolutely require this functionality and cannot use Open Type or WOFF 
fonts, you must use another browser.

Original comment by classi...@floodgap.com on 28 Jan 2012 at 3:17