DHARMMA and SVA in Grantha

[Kučera Jan]

Hello,

I have an inscription in Grantha that says DHARMMA, see the attached picture, end of line 32 - namely the MMA is not ligatured. Does anyone have any suggestion how this should be represented in Unicode?

Technically, it should be DHA+RA+(VIRAMA+MA+[VIRAMA+]MA), I tried putting ZWJ and ZWNJ in various places, but the tricky part seems to be getting the reph after a non-joined cluster.

You can get the desired appearance using DHA+MA+RA+VIRAMA+MA, but I would rather have the underlying text accurate and deal with it at render time. The only idea I have is to create another ligature for MA+VIRAMA+MA and use OpenType features to switch to it. Or am I missing something obvious?


Second, there is a SVA ligature which seems to be pretty common in inscriptions. However, SA+VIRAMA+VA normally results in VA stacked below SA. What is the idea regarding choosing between stacked and ligatured clusters?


Thanks!
Jan


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