[mpeg-OTspec] RE: [OpenType] Kerning

[John Hudson]

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Behdad Esfahbod wrote:

> I think you are missing the point of the discussion.  This whole thread is
> about recommending what layout engines should do when both kern and some
> GSUB/GPOS is available.  Aren't you getting rid of the question instead of
> answering it?

I'm wondering whether it is a question that needs to be answered in
terms of the OpenType specification which is -- notoriously so -- a font
format specification not a layout implementation specification.

> If the recommendation is "no recommendation", sure, that's an
> option too.  But that's not what's currently on the table from my understanding.

I understand what is currently on the table, in terms of the spec
ammendment proposed by Sairus, as regarding what happens when a font
contains both a kern table and GPOS *kerning*. I think what you have
raised in the past few days is a different issue: what to do if a font
contains a kern table and non-kerning GPOS.

The presence or absence of GSUB seems to me tangential or, at least, it
should be tangential, because to make decisions about positioning based
on anything other than the presence or absence of GPOS seems a bad idea.

J.


-- 

Tiro Typeworks        www.tiro.com
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