Tests/feaLib/data/ChainPosSubtable.ttx

<?xml version="1.0" encoding="UTF-8"?>
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  <GPOS>
    <Version value="0x00010000"/>
    <ScriptList>
      <!-- ScriptCount=1 -->
      <ScriptRecord index="0">
        <ScriptTag value="DFLT"/>
        <Script>
          <DefaultLangSys>
            <ReqFeatureIndex value="65535"/>
            <!-- FeatureCount=1 -->
            <FeatureIndex index="0" value="0"/>
          </DefaultLangSys>
          <!-- LangSysCount=0 -->
        </Script>
      </ScriptRecord>
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    <FeatureList>
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      <FeatureRecord index="0">
        <FeatureTag value="test"/>
        <Feature>
          <!-- LookupCount=1 -->
          <LookupListIndex index="0" value="0"/>
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      </FeatureRecord>
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    <LookupList>
      <!-- LookupCount=5 -->
      <Lookup index="0">
        <LookupType value="8"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=3 -->
        <ChainContextPos index="0" Format="3">
          <!-- BacktrackGlyphCount=1 -->
          <BacktrackCoverage index="0">
            <Glyph value="X"/>
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          <!-- InputGlyphCount=3 -->
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            <Glyph value="A"/>
            <Glyph value="B"/>
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          <InputCoverage index="1">
            <Glyph value="B"/>
          </InputCoverage>
          <InputCoverage index="2">
            <Glyph value="A"/>
          </InputCoverage>
          <!-- LookAheadGlyphCount=1 -->
          <LookAheadCoverage index="0">
            <Glyph value="Y"/>
          </LookAheadCoverage>
          <!-- PosCount=3 -->
          <PosLookupRecord index="0">
            <SequenceIndex value="0"/>
            <LookupListIndex value="1"/>
          </PosLookupRecord>
          <PosLookupRecord index="1">
            <SequenceIndex value="1"/>
            <LookupListIndex value="1"/>
          </PosLookupRecord>
          <PosLookupRecord index="2">
            <SequenceIndex value="2"/>
            <LookupListIndex value="1"/>
          </PosLookupRecord>
        </ChainContextPos>
        <ChainContextPos index="1" Format="3">
          <!-- BacktrackGlyphCount=1 -->
          <BacktrackCoverage index="0">
            <Glyph value="X"/>
          </BacktrackCoverage>
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          <InputCoverage index="0">
            <Glyph value="A"/>
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          <!-- LookAheadGlyphCount=1 -->
          <LookAheadCoverage index="0">
            <Glyph value="Y"/>
          </LookAheadCoverage>
          <!-- PosCount=1 -->
          <PosLookupRecord index="0">
            <SequenceIndex value="0"/>
            <LookupListIndex value="2"/>
          </PosLookupRecord>
        </ChainContextPos>
        <ChainContextPos index="2" Format="3">
          <!-- BacktrackGlyphCount=1 -->
          <BacktrackCoverage index="0">
            <Glyph value="X"/>
          </BacktrackCoverage>
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            <Glyph value="C"/>
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          <!-- LookAheadGlyphCount=1 -->
          <LookAheadCoverage index="0">
            <Glyph value="Y"/>
          </LookAheadCoverage>
          <!-- PosCount=3 -->
          <PosLookupRecord index="0">
            <SequenceIndex value="0"/>
            <LookupListIndex value="3"/>
          </PosLookupRecord>
          <PosLookupRecord index="1">
            <SequenceIndex value="1"/>
            <LookupListIndex value="3"/>
          </PosLookupRecord>
          <PosLookupRecord index="2">
            <SequenceIndex value="2"/>
            <LookupListIndex value="4"/>
          </PosLookupRecord>
        </ChainContextPos>
      </Lookup>
      <Lookup index="1">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="1">
          <Coverage>
            <Glyph value="A"/>
            <Glyph value="B"/>
          </Coverage>
          <ValueFormat value="4"/>
          <Value XAdvance="-40"/>
        </SinglePos>
      </Lookup>
      <Lookup index="2">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="1">
          <Coverage>
            <Glyph value="A"/>
          </Coverage>
          <ValueFormat value="4"/>
          <Value XAdvance="-111"/>
        </SinglePos>
      </Lookup>
      <Lookup index="3">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="2">
          <Coverage>
            <Glyph value="A"/>
            <Glyph value="B"/>
          </Coverage>
          <ValueFormat value="4"/>
          <!-- ValueCount=2 -->
          <Value index="0" XAdvance="-111"/>
          <Value index="1" XAdvance="-40"/>
        </SinglePos>
      </Lookup>
      <Lookup index="4">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="1">
          <Coverage>
            <Glyph value="A"/>
            <Glyph value="B"/>
            <Glyph value="C"/>
          </Coverage>
          <ValueFormat value="4"/>
          <Value XAdvance="-40"/>
        </SinglePos>
      </Lookup>
    </LookupList>
  </GPOS>

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