[NTG-context] can Context render complex scripts?

Idris Samawi Hamid ادريس سماوي حامد ishamid at colostate.edu
Sun Jun 13 22:07:19 CEST 2010


Hi,

On Sun, 13 Jun 2010 13:41:38 -0600, Hans Hagen <pragma at wxs.nl> wrote:

> the interesting question then is .. where does one draw the line between  
> engine and clever fonts

contextual analysis in Arabic provides an example: init, medi, and fina  
provide the gsub's, the engine has to know the rules/conditions under  
which to apply each of those three. Eg, VOLT Proofing tool will NOT do  
contextual analysis, only implement the selected lookups. Something  
similar applies to Indic of course, but someone has to provide the  
framework of rules. The MS pages Khaled sent are a good place to start,  
and a user willing to make examples with explanations etc...

That is, given all gsub and gpos routines needed by a given language, what  
minimal additional information does the engine need to know? In Arabic,  
one needs contextual analysis: if a letter occurs at the beginning of a  
string, choose the init gsub routine etc.

The bad thing about Uniscribe is that it adds too much information and  
"spell-checking", restricting typesetting possibilities.

In any case, someone interested has to research/provide the details for  
Indic.

Best wishes
Idris
-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523



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