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
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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