RE: Transcoding Tamil in the presence of markup

[Peter Jacobi]

Hi Maurice, All,

> If you are trying to stylise one glyph of a multiglyph character, you are
> hung. The smallest unit in Unicode (and the standards dependent upon it)
> is
> the character (not the glyph). You can change the 'feature' of individual
> glyphs using Graphite (also from SIL), but OpenType only has on/off
> settings
> for feature (and seldom accessible).

This is the core problem. Legacy Tamil encodings and use
see  the vowel signs as individual characters. Switching to 
ISCII or Unicode will break this.

And most Tamil Vowel signs appear as very distinct characters,
otherwise a Tamil typewriter would not have been possible.

Regards,
Peter Jacobi

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