> Unicode has a mechanism for producing the ya-phalaa conjunct, namely > by preceding the ya with virama. This works also in the unusual > situation where the "consonant" the ya-phalaa modifies is an > independent vowel. > > A + VIRAMA + YA + -AA (this is aa-yaphalaa) > RA + VIRAMA + ZWJ + YA (this is the reph-ya) > RA + VIRAMA + YA (this is the ra-yaphalaa)
I said that I was not going to discuss this with you any further. I can now no longer resist! :-)
Saying "RA + VIRAMA + ZWJ + YA = reph-ya" will not be acceptable. Implementing this will break all existing implementations. All current Fonts and Bengali Unicode texts rely on Ra+Virama+Ya as being representative of the more common reph-ya.
Moreover, RA + VIRAMA + YA cannot represent "Ra-yaphalaa" as Ra+Virama is relied upon as being representative of Reph. For example, in the Indic OpenType secifications, you will see that a Ra+Virama is recognised as reph before any other processing is applied.
If this is the case (and one would like corroboration) then simply reverse the two. The solution is the same.
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Michael Everson * * Everson Typography * * http://www.evertype.com
