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restore original spec5d1.fea example and modify expected ttx instead

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Cosimo Lupo 2024-01-24 16:41:34 +00:00
parent 957b5fb45a
commit 796f677225
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2 changed files with 24 additions and 14 deletions
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22
Tests/feaLib/data/spec5d1.fea
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@ -2,7 +2,7 @@
# http://www.adobe.com/devnet/opentype/afdko/topic_feature_file_syntax.html
feature F1 {
sub [one one.oldstyle] [fraction slash] [two two.oldstyle] by onehalf;
sub [one one.oldstyle] [slash fraction] [two two.oldstyle] by onehalf;
} F1;
# Since the OpenType specification does not allow ligature substitutions
@ -11,13 +11,23 @@ feature F1 {
# if glyph classes are detected in <glyph sequence>. Thus, the above
# example produces an identical representation in the font as if all
# the sequences were manually enumerated by the font editor:
#
# NOTE(anthrotype): The previous sentence is no longer entirely true, since we
# now preserve the order in which the ligatures (with same length and first glyph)
# were specified in the feature file and do not sort them alphabetically
# by the ligature component names. Therefore, the way this particular example from
# the FEA spec is written will produce two slightly different representations
# in the font in which the ligatures are enumerated differently, however the two
# lookups are functionally equivalent.
# See: https://github.com/fonttools/fonttools/issues/3428
# https://github.com/adobe-type-tools/afdko/issues/1727
feature F2 {
sub one fraction two by onehalf;
sub one fraction two.oldstyle by onehalf;
sub one slash two by onehalf;
sub one slash two.oldstyle by onehalf;
sub one.oldstyle fraction two by onehalf;
sub one.oldstyle fraction two.oldstyle by onehalf;
sub one.oldstyle slash two by onehalf;
sub one fraction two by onehalf;
sub one.oldstyle fraction two by onehalf;
sub one slash two.oldstyle by onehalf;
sub one.oldstyle slash two.oldstyle by onehalf;
sub one fraction two.oldstyle by onehalf;
sub one.oldstyle fraction two.oldstyle by onehalf;
} F2;

16
Tests/feaLib/data/spec5d1.ttx
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@ -43,16 +43,16 @@
<!-- SubTableCount=1 -->
<LigatureSubst index="0">
<LigatureSet glyph="one">
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
<Ligature components="slash,two" glyph="onehalf"/>
<Ligature components="slash,two.oldstyle" glyph="onehalf"/>
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
</LigatureSet>
<LigatureSet glyph="one.oldstyle">
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
<Ligature components="slash,two" glyph="onehalf"/>
<Ligature components="slash,two.oldstyle" glyph="onehalf"/>
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
</LigatureSet>
</LigatureSubst>
</Lookup>
@ -62,16 +62,16 @@
<!-- SubTableCount=1 -->
<LigatureSubst index="0">
<LigatureSet glyph="one">
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
<Ligature components="slash,two" glyph="onehalf"/>
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="slash,two.oldstyle" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
</LigatureSet>
<LigatureSet glyph="one.oldstyle">
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
<Ligature components="slash,two" glyph="onehalf"/>
<Ligature components="fraction,two" glyph="onehalf"/>
<Ligature components="slash,two.oldstyle" glyph="onehalf"/>
<Ligature components="fraction,two.oldstyle" glyph="onehalf"/>
</LigatureSet>
</LigatureSubst>
</Lookup>