Re: plain ASCII version of TSCII charset registration request

[K Kalyanasundaram <kalyan.geo@yahoo.com>]

Dear Ken:

We are aware that Unicode has added (or redefined) few characters in 
the Tamil block since the tech. note #15 was filed.  We are already in
contact 
with Mr. Rick McGowan of Unicode Consortium on placing an updated 
version of this technical note, so that the mapping table does
correspond
to latest version of Unicode Tamil Block. 

K. Kalyanasundaram

--- Kenneth Whistler <kenw@sybase.com> wrote:

> I'm not otherwise commenting on this registration, but:
> 
> > Published Specifications:
> >    http://www.tscii.org/tsciispec.html
> > 
> > ISO 10646 Equivalency Table: 
> >  Available as a technical note at the Unicode Consortium website
> >    http://www.unicode. org/notes/ tn15/
> 
> That Technical Note #15 is out of date, reflecting the state
> of affairs as of Unicode 4.0. It contains two notes regarding
> the likelihood of the encoding of a Tamil digit zero and a
> Tamil sha, but before they became final. In Unicode 5.0
> the final code points are:
> 
> U+0BE6 TAMIL DIGIT ZERO
> 
> U+0BB6 TAMIL LETTER SHA
>  
> > As a glyph-based encoding, TSCII codechart includes vowels,
> consonants
> > and abugida (compound vowel-consonant) characters. Unicode, as a
> > character encoding encodes only vowels and consonants. Hence not
> all
> > codepoints of TSCII can be converted one-to-one with ISO 10646.
> 
> What that means is that the referenced technical note is
> incomplete currently as regards the 10646 equivalency of the
> following two elements in TSCII:
> 
> > 80  TAMIL DIGIT CUZHI = Tamil digit zero
> 
> > 82  TAMIL GRANTHA LETTER SRI = Tamil letter sri
> 
> --Ken
> 
> 
>