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

[Carl Simonson]

I was wondering about ZWNJ/ZWJ too. It seems like that could do the job for
the non-numeral case.

I've tried other renderings on Windows, Mac, and Pango and none of them do
this repeating vowel thing. Are the people who want vowels to repeat able
to get this to work with these existing systems, or are these existing
systems rendering wrong in the first place?

Also, if implemented, for what scripts should this apply? Just Malayalam?
All Indic scripts? What about Latin combining characters, e.g. accent grave
U+0300?

Carl S

Carl Simonson
simonsonc at gmail.com


On Thu, Feb 28, 2013 at 4:35 AM, Jonathan Kew <jfkthame at googlemail.com>wrote:

> On 28/2/13 09:59, Santhosh Thottingal wrote:>
> >
> > 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<http://thottingal.in/images/repeated-vowels-ml.png>
> > Split matras expand on both sides as illustrated.
>
> Do you have illustrations/examples demonstrating a real-world requirement
> for repeated split matras, rather than just a constructed test-case?
>
>
> >
> > 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.
> >
>
> We're aware of this example, and intend to fix it; it's a separate issue
> from whether some or all matras may be repeated.
>
> JK
>
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