[XeTeX] Devanagari ASCII to Unicode mapping

[Philip Taylor (RHUoL)]

Daniel Greenhoe wrote:
> I think the conclusion is that I was going about the problem the wrong
> way---that there is no one-to-one mapping between the Devanagari ASCII
> font and unicode font. Rather, it is many-to-one.
Is the problem not, in fact, that there is not one "Devanagari ASCII 
font" but rather many, for each of which there is potentially a 
different mapping required ?
Philip Taylor