On 2/13/2017 4:47 PM, MF wrote:

Hello list, I found an interference between the "frac" opentype feature and \setbreakpoints[compound], which make the former fail when you have a numerator more than 2 digit wide.

I found it with Adobe Garamond Premier Pro: with \setbreakpoints[compound], when the fraction had a 3-digit (or more) numerator, the denominator stayed high as the numerator (like a superscript).

Here I replaced Garamond Premier Pro with the freely available "Lato" font, to let you reproduce the problem. The outcome is different, but still erroneous: \setbreakpoints[compound] makes ConTeXt ignore the "frac" feature at all.

Please try this:

\definefontfeature[frac][frac=yes] \definefontfamily[default][rm][lato][features=frac] \setupbodyfont[default,rm,11pt]

\setbreakpoints[compound]

\starttext

\addff{frac} 1/3, 1/100, 1/1000, {\setbreakpoints[reset]1633/100}, 2345/12.

\stoptext

A workaround is a local \setbreakpoints[reset] limited to the fraction.

i'll add this: \definefontfeature[f:fractions][frac=yes] \definealternativestyle [fractions] [\setfractions\resetbreakpoints] [\setfractions\resetbreakpoints] \unexpanded\def\setfractions{\doaddfeature{f:fractions}} \addff{frac} 1/3, 1/100, 1/1000, {\resetbreakpoints 1633/100}, 2345/12. \fractions{1/3, 1/100, 1/1000, 1633/100, 2345/12}. Keep in mind that often the fractions feature sis incomplete and can even give weird side effects when applied to a whole stretch of text so limiting the scope is wise anyway Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------