fonttools/Tests/feaLib/data/GPOS_8.ttx

<?xml version="1.0" encoding="UTF-8"?>
<ttFont sfntVersion="true" ttLibVersion="3.0">

  <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>
    </ScriptList>
    <FeatureList>
      <!-- FeatureCount=1 -->
      <FeatureRecord index="0">
        <FeatureTag value="test"/>
        <Feature>
          <!-- LookupCount=2 -->
          <LookupListIndex index="0" value="0"/>
          <LookupListIndex index="1" value="5"/>
        </Feature>
      </FeatureRecord>
    </FeatureList>
    <LookupList>
      <!-- LookupCount=6 -->
      <Lookup index="0">
        <LookupType value="8"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <ChainContextPos index="0" Format="1">
          <Coverage>
            <Glyph value="one"/>
          </Coverage>
          <!-- ChainPosRuleSetCount=1 -->
          <ChainPosRuleSet index="0">
            <!-- ChainPosRuleCount=1 -->
            <ChainPosRule index="0">
              <!-- BacktrackGlyphCount=1 -->
              <Backtrack index="0" value="A"/>
              <!-- InputGlyphCount=4 -->
              <Input index="0" value="two"/>
              <Input index="1" value="one"/>
              <Input index="2" value="two"/>
              <!-- LookAheadGlyphCount=0 -->
              <!-- PosCount=4 -->
              <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="2"/>
              </PosLookupRecord>
              <PosLookupRecord index="3">
                <SequenceIndex value="3"/>
                <LookupListIndex value="2"/>
              </PosLookupRecord>
            </ChainPosRule>
          </ChainPosRuleSet>
        </ChainContextPos>
      </Lookup>
      <Lookup index="1">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="2">
          <Coverage>
            <Glyph value="one"/>
            <Glyph value="two"/>
          </Coverage>
          <ValueFormat value="4"/>
          <!-- ValueCount=2 -->
          <Value index="0" XAdvance="1"/>
          <Value index="1" XAdvance="2"/>
        </SinglePos>
      </Lookup>
      <Lookup index="2">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="2">
          <Coverage>
            <Glyph value="one"/>
            <Glyph value="two"/>
          </Coverage>
          <ValueFormat value="4"/>
          <!-- ValueCount=2 -->
          <Value index="0" XAdvance="-1"/>
          <Value index="1" XAdvance="-2"/>
        </SinglePos>
      </Lookup>
      <Lookup index="3">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="1">
          <Coverage>
            <Glyph value="one"/>
          </Coverage>
          <ValueFormat value="4"/>
          <Value XAdvance="100"/>
        </SinglePos>
      </Lookup>
      <Lookup index="4">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SinglePos index="0" Format="1">
          <Coverage>
            <Glyph value="two"/>
          </Coverage>
          <ValueFormat value="4"/>
          <Value XAdvance="200"/>
        </SinglePos>
      </Lookup>
      <Lookup index="5">
        <LookupType value="8"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <ChainContextPos index="0" Format="3">
          <!-- BacktrackGlyphCount=2 -->
          <BacktrackCoverage index="0">
            <Glyph value="B"/>
            <Glyph value="b"/>
          </BacktrackCoverage>
          <BacktrackCoverage index="1">
            <Glyph value="A"/>
            <Glyph value="a"/>
          </BacktrackCoverage>
          <!-- InputGlyphCount=3 -->
          <InputCoverage index="0">
            <Glyph value="I"/>
          </InputCoverage>
          <InputCoverage index="1">
            <Glyph value="N"/>
          </InputCoverage>
          <InputCoverage index="2">
            <Glyph value="P"/>
          </InputCoverage>
          <!-- LookAheadGlyphCount=2 -->
          <LookAheadCoverage index="0">
            <Glyph value="Y"/>
            <Glyph value="y"/>
          </LookAheadCoverage>
          <LookAheadCoverage index="1">
            <Glyph value="Z"/>
            <Glyph value="z"/>
          </LookAheadCoverage>
          <!-- PosCount=2 -->
          <PosLookupRecord index="0">
            <SequenceIndex value="0"/>
            <LookupListIndex value="3"/>
          </PosLookupRecord>
          <PosLookupRecord index="1">
            <SequenceIndex value="1"/>
            <LookupListIndex value="4"/>
          </PosLookupRecord>
        </ChainContextPos>
      </Lookup>
    </LookupList>
  </GPOS>

</ttFont>