[mpeg-OTspec] RE: [OpenType] Kerning

[Behdad Esfahbod]

On 03/24/2010 08:01 PM, Sairus Patel wrote:
> 
> However, I don't believe it follows from this that the GPOS needs to be
> applied before the kern table in the situation described below. Bidi
> level partitioning needs to happen before either the kern table or GPOS
> table is applied, it's just that the kern table needs to be looked up
> with glyphs in visual order and the GPOS needs to be looked up with
> glyphs in "logical" order. Applying either table requires knowledge of
> the bidi level of the sub-run.

Fair enough.  However, are you also implying that the kern table matching
should skip marks?  Otherwise I don't see how a couple glyphs with a mark in
between can be kerned with the kern table regardless of when it's applied.

And if you do imply that it should skip marks, then how can be kern table used
to position marks?

behdad