On 20/2/13 12:24, Lóránt Pintér wrote:
I'm trying this with a font that has the kerning data in the "kern"
table as well as in the "GPOS" table. (Is that possible?)
Can you show me a font that this feature works with?
I thought we'd seen it work last week, but now it doesn't seem to. :(
Behdad, did we miss something here? It seems to me like the skippy_iter
in PairPosFormat1::apply doesn't know what it's looking for...
JK
--
*Lóránt Pintér*
Developer at Prezi <http://prezi.com>
On Wednesday, February 20, 2013 at 10:26 AM, Jonathan Kew wrote:
On 19/2/13 23:35, Lóránt Pintér wrote:
Using ZWNJ would be a great way of fixing it. And indeed it splits the
ligature all right, but it also destroys the kerning. Here's a little
test I did with HarfBuzz @ e0486fc1affd3796fb8f664e2e7fc208f1d2106c:
(the font has an "fi" ligature, and has some kerning between "F" and ",")
Splitting the ligature with the ZWNJ works:
Shaped "fif\u200Ci" with features: [ ]
Glyph: #682, x_advance: 652
Glyph: #71, x_advance: 380
Glyph: #3, x_advance: 0
Glyph: #74, x_advance: 292
Kerning across the ZWNJ does not:
Shaped "F,F\u200C," with features: [ ]
Glyph: #39, x_advance: 483
Glyph: #13, x_advance: 242
Glyph: #39, x_advance: 563
Glyph: #3, x_advance: 0
Glyph: #13, x_advance: 242
Is it possible that doing this will be supported later in HarfBuzz?
Hmm - is that font using a legacy 'kern' table, or a GPOS 'kern'
feature? For the former, I can understand that kerning would break, as
it's a naïve glyph-pair lookup, but for the latter, I thought we should
now ignore the ZWNJ.
JK
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