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[feaLib] Add test case for chaining to another chaining substitution

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This commit is contained in:
Sascha Brawer 2016-01-07 12:03:22 +01:00
parent db49f20d6b
commit b7a7577750
2 changed files with 44 additions and 2 deletions
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5
Lib/fontTools/feaLib/testdata/GSUB_6.fea vendored
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@ -15,9 +15,14 @@ lookup ChainedLigatureSubst {
substitute A [C c]' [T t]' Z by c_t;
} ChainedLigatureSubst;
lookup ChainedContextualSubst {
substitute A D E c_t' lookup ChainedMultipleSubst V W X;
} ChainedContextualSubst;
feature test {
lookup ChainedSingleSubst;
lookup ChainedMultipleSubst;
lookup ChainedAlternateSubst;
lookup ChainedLigatureSubst;
lookup ChainedContextualSubst;
} test;

41
Lib/fontTools/feaLib/testdata/GSUB_6.ttx vendored
View File

@ -22,16 +22,17 @@
<FeatureRecord index="0">
<FeatureTag value="test"/>
<Feature>
<!-- LookupCount=4 -->
<!-- LookupCount=5 -->
<LookupListIndex index="0" value="1"/>
<LookupListIndex index="1" value="4"/>
<LookupListIndex index="2" value="6"/>
<LookupListIndex index="3" value="8"/>
<LookupListIndex index="4" value="9"/>
</Feature>
</FeatureRecord>
</FeatureList>
<LookupList>
<!-- LookupCount=9 -->
<!-- LookupCount=10 -->
<Lookup index="0">
<!-- LookupType=1 -->
<LookupFlag value="0"/>
@ -231,6 +232,42 @@
</SubstLookupRecord>
</ChainContextSubst>
</Lookup>
<Lookup index="9">
<!-- LookupType=6 -->
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="3">
<!-- BacktrackGlyphCount=3 -->
<BacktrackCoverage index="0">
<Glyph value="E"/>
</BacktrackCoverage>
<BacktrackCoverage index="1">
<Glyph value="D"/>
</BacktrackCoverage>
<BacktrackCoverage index="2">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="c_t"/>
</InputCoverage>
<!-- LookAheadGlyphCount=3 -->
<LookAheadCoverage index="0">
<Glyph value="V"/>
</LookAheadCoverage>
<LookAheadCoverage index="1">
<Glyph value="W"/>
</LookAheadCoverage>
<LookAheadCoverage index="2">
<Glyph value="X"/>
</LookAheadCoverage>
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="4"/>
</SubstLookupRecord>
</ChainContextSubst>
</Lookup>
</LookupList>
</GSUB>