[HarfBuzz] Corner case wrt to repeating Malayalam vowel sign OO

[Santhosh Thottingal]

On Thursday, February 28, 2013, Jonathan Kew wrote:

> I wonder whether it really makes sense to allow multiple matras in -all-
> positions. I believe I've seen Devanagari examples similar to Cibu's
> Malayalam comic, where a right-matra is repeated to suggest a loooooong
> sound. But left-reordering matras? Split matras? Above- or below-matras?
> The idea of repeating these indefinitely when writing seems much less
> plausible.
>


Please see this image listing various cases of vowel sign repeating:
http://thottingal.in/images/repeated-vowels-ml.png
Split matras expand on both sides as illustrated.

It might be a related case- After writing numbers, just like we write
"16th" in English, in Malayalam, it is written as 16ാം , number followed
by ാ, ം. Currently this cannot be written without dotted circle, but
ideally this should render without dotted circle.


Thanks
Santhosh
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