lter)(\s+)((?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*)">
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          <token type="Keyword"/>
          <token type="Text"/>
          <token type="NameFunction"/>
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        <push state="tag"/>
      </rule>
      <rule pattern="(\{%)(-?\s*)([a-zA-Z_]\w*)">
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          <token type="Operator"/>
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          <token type="NameFunction"/>
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      <rule pattern="(is)(\s+)(not)?(\s*)((?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*)">
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          <token type="Keyword"/>
          <token type="Text"/>
          <token type="NameFunction"/>
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      <rule pattern="(?i)(true|false|none|null)\b">
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      <rule pattern="(in|not|and|b-and|or|b-or|b-xor|isif|elseif|else|importconstant|defined|divisibleby|empty|even|iterable|odd|sameasmatches|starts\s+with|ends\s+with)\b">
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        <token type="NameBuiltin"/>
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      <rule pattern="(?:[\\_a-z]|[^\x00-\x7f])(?:[\\\w-]|[^\x00-\x7f])*">
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      <rule pattern=":?&#34;(\\\\|\\&#34;|[^&#34;])*&#34;">
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      <rule pattern="([{}()\[\]+\-*/,:~%]|\.\.|\?|:|\*\*|\/\/|!=|[&gt;&lt;=]=?)">
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      <rule pattern="[0-9](\.[0-9]*)?(eE[+-][0-9])?[flFLdD]?|0[xX][0-9a-fA-F]+[Ll]?">
        <token type="LiteralNumber"/>
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</lexer>