DISQUS

Although most fonts only contain pre-built fraction glyphs for ¼½ and ¾, newer OpenType fonts can build arbitrary fractions using contextual substitution and sets of numerator and denominator numerals. It works like this:

Enter an arbitrary fraction, e.g. 7253735/89362529 and apply the Typography.Fractions property. If a font supports arbitrary fractions, the lookups will
a) change all numerals in the string to numerator glyphs,
b) change the slash glyph to a fraction bar,
c) contextually change the numerator glyph that follows the fraction bar into a denominator glyph,
d) contextually change any numerator glyph preceded by a denominator glyph to a denominator glyph.

Et voila: one arbitrary fraction. Filipe, you can try this with any of the new ClearType collection fonts (Calibri, Cambria, Candara, Constantia, Corbel -- I'm can't remember if the monospaced Consolas font supports this layout feature or not).


In reference to the preceding comment, I heard a rumour that MS and Adobe had come to an agreement re. CFF PostScript support in Avalon. Perhaps this is something that can now be officially confirmed or denied?

Although most fonts only contain pre-built fraction glyphs for ¼½ and ¾, newer OpenType fonts can build arbitrary fractions using contextual substitution and sets of numerator and denominator numerals. It works like this:

Enter an arbitrary fraction, e.g. 7253735/89362529 and apply the Typography.Fractions property. If a font supports arbitrary fractions, the lookups will
a) change all numerals in the string to numerator glyphs,
b) change the slash glyph to a fraction bar,
c) contextually change the numerator glyph that follows the fraction bar into a denominator glyph,
d) contextually change any numerator glyph preceded by a denominator glyph to a denominator glyph.

Et voila: one arbitrary fraction. Filipe, you can try this with any of the new ClearType collection fonts (Calibri, Cambria, Candara, Constantia, Corbel -- I'm can't remember if the monospaced Consolas font supports this layout feature or not).


In reference to the preceding comment, I heard a rumour that MS and Adobe had come to an agreement re. CFF PostScript support in Avalon. Perhaps this is something that can now be officially confirmed or denied?