The history of luaTEX 2006–2009 / v 0.50 - Pragma ADE

840
italic 60
top_accent
(0,1020)
ftop_right
(250,780)
top_right
(-320,720)
(65,720)
(-30,680)
(0,620)
(-400,420)
bottom_right
(0,100)
(100,0)
bottom_leftf
U+00066 0x1D453
The ladders on the right can be used to position a super or subscript, that is, they are positioned
in the normal way but the ladder, as well as the boundingbox and/or left ladders
of the scripts can be used to ne tune the positioning.
Should we use this information? I made this visualizer for checking some Arabic fonts
anchoring and cursive features and then it made sense to add some of the information
related to math as well. 8 The orange booklet shows quite advanced ladders, and when
looking at the 3500 shapes in Cambria, it quickly becomes clear that in practice there is
not that much detail in the specication. Nevertheless, because without this feature the
result is not acceptable LuaTEX gracefully supports it.
Va a V a V a V2 1V
1 V 2 f a f a fa
V f
f V f V f V2 1V
1 V 2 f f f f f f f
Ta T a T a T2 1T 1 T 2 f a f f ff
a
T f f T f T f T 1 2 T 1 T 2 f f f a f f a
latin modern
V aV a V a V 1 2 V1 V 2 f a f a f a a
V f f Vf V f V 1 2 V1 V 2 f f f f f f f
T aT a T a T 1 2 T1 T 2 f a f f f a f
T f f Tf T f T 1 2 T1 T 2 f f f a f f a
cambria
without kerning
Va a V a V a V2 1V1
V 2 f a f a fa
a
V f
f Vf V f V2 1V1
V 2 f f f f f f
Ta a T a T a T2 1T1 T 2 f a f f ff
a
T f f Tf T f T2 1T1 T 2 f f f a fa
cambria with kerning
8
Taco extended the visualizer for his presentation at Bachotek 2009 so you might run into variants.
294 Unicode math