[smc-discuss] Reordering question with dotreph

[Santhosh Thottingal]

Rajeesh,

for dotreph+ത്തു as in കാൎത്തു,
what will be the reordering by rendering engine

This is what I observe:

th1 xx th1 dotreph u1

IMO, this must be:

th1 xx th1 u1 dotreph for old orthography font so that we can create ത്തു
and then put dotreph using GPOS.

Some more context:
(mlm2)$ hb-shape Meera/Meera.ttf "കാൎത്തു"
[k1=0+1605|uni0D3E=0+848|dotrephth1th1u1=2+2461]

I wanted to remove dotrephth1th1u1 glyph. Once I removed it,

(mlm2)$ hb-shape Meera/Meera.ttf "കാൎത്തു"
[k1=0+1605|uni0D3E=0+848|dotrephth1th1=2+2708|u1=2+639]

I want to remove dotrephth1th1 glyph too, then I get

(mlm2)$ hb-shape Meera/Meera.ttf "കാൎത്തു"
[k1=0+1605|uni0D3E=0+848|th1th1=2+2708|dotreph=2+0|u1=2+639]

This is wrong with ു sign coming at the end instead of forming ത്തു

since dotreph comes in between th1th1 and u1, we cannot create ത്തു
ligature.

Do you think this as a bug in hb reordering?

An analogy can be ത്തു + ോ .
This is not real, but with hb, I get:

((mlm2)$ hb-shape --show-unicode Meera/Meera.ttf "ത്തുൊ "
<U+0D24,U+0D4D,U+0D24,U+0D41,U+0D4A>
[uni0D46=0+1184|th1th1u1=0+2461|uni0D3E=0+848]

With dotreph I expect a similar reordering.

Santhosh
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