fonttools/Tests/feaLib/data/lookup.ttx

<?xml version="1.0" encoding="UTF-8"?>
<ttFont>

  <GSUB>
    <Version value="0x00010000"/>
    <ScriptList>
      <!-- ScriptCount=1 -->
      <ScriptRecord index="0">
        <ScriptTag value="DFLT"/>
        <Script>
          <DefaultLangSys>
            <ReqFeatureIndex value="65535"/>
            <!-- FeatureCount=4 -->
            <FeatureIndex index="0" value="0"/>
            <FeatureIndex index="1" value="1"/>
            <FeatureIndex index="2" value="2"/>
            <FeatureIndex index="3" value="3"/>
          </DefaultLangSys>
          <!-- LangSysCount=0 -->
        </Script>
      </ScriptRecord>
    </ScriptList>
    <FeatureList>
      <!-- FeatureCount=4 -->
      <FeatureRecord index="0">
        <FeatureTag value="tst1"/>
        <Feature>
          <!-- LookupCount=1 -->
          <LookupListIndex index="0" value="0"/>
        </Feature>
      </FeatureRecord>
      <FeatureRecord index="1">
        <FeatureTag value="tst2"/>
        <Feature>
          <!-- LookupCount=1 -->
          <LookupListIndex index="0" value="0"/>
        </Feature>
      </FeatureRecord>
      <FeatureRecord index="2">
        <FeatureTag value="tst3"/>
        <Feature>
          <!-- LookupCount=1 -->
          <LookupListIndex index="0" value="1"/>
        </Feature>
      </FeatureRecord>
      <FeatureRecord index="3">
        <FeatureTag value="tst4"/>
        <Feature>
          <!-- LookupCount=1 -->
          <LookupListIndex index="0" value="1"/>
        </Feature>
      </FeatureRecord>
    </FeatureList>
    <LookupList>
      <!-- LookupCount=2 -->
      <Lookup index="0">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0">
          <LigatureSet glyph="f">
            <Ligature components="f,i" glyph="f_f_i"/>
            <Ligature components="i" glyph="f_i"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="1">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SingleSubst index="0">
          <Substitution in="A" out="A.sc"/>
        </SingleSubst>
      </Lookup>
    </LookupList>
  </GSUB>

</ttFont>