<lexer>
  <config>
    <name>Prolog</name>
    <alias>prolog</alias>
    <filename>*.ecl</filename>
    <filename>*.prolog</filename>
    <filename>*.pro</filename>
    <filename>*.pl</filename>
    <mime_type>text/x-prolog</mime_type>
  </config>
  <rules>
    <state name="root">
      <rule pattern="/\*">
        <token type="CommentMultiline"/>
        <push state="nested-comment"/>
      </rule>
      <rule pattern="%.*">
        <token type="CommentSingle"/>
      </rule>
      <rule pattern="0\&#39;.">
        <token type="LiteralStringChar"/>
      </rule>
      <rule pattern="0b[01]+">
        <token type="LiteralNumberBin"/>
      </rule>
      <rule pattern="0o[0-7]+">
        <token type="LiteralNumberOct"/>
      </rule>
      <rule pattern="0x[0-9a-fA-F]+">
        <token type="LiteralNumberHex"/>
      </rule>
      <rule pattern="\d\d?\&#39;[a-zA-Z0-9]+">
        <token type="LiteralNumberInteger"/>
      </rule>
      <rule pattern="(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?">
        <token type="LiteralNumberFloat"/>
      </rule>
      <rule pattern="\d+">
        <token type="LiteralNumberInteger"/>
      </rule>
      <rule pattern="[\[\](){}|.,;!]">
        <token type="Punctuation"/>
      </rule>
      <rule pattern=":-|--&gt;">
        <token type="Punctuation"/>
      </rule>
      <rule pattern="&#34;(?:\\x[0-9a-fA-F]+\\|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|\\[0-7]+\\|\\[&#34;\nabcefnrstv]|[^\\&#34;])*&#34;">
        <token type="LiteralStringDouble"/>
      </rule>
      <rule pattern="&#39;(?:&#39;&#39;|[^&#39;])*&#39;">
        <token type="LiteralStringAtom"/>
      </rule>
      <rule pattern="is\b">
        <token type="Operator"/>
      </rule>
      <rule pattern="(&lt;|&gt;|=&lt;|&gt;=|==|=:=|=|/|//|\*|\+|-)(?=\s|[a-zA-Z0-9\[])">
        <token type="Operator"/>
      </rule>
      <rule pattern="(mod|div|not)\b">
        <token type="Operator"/>
      </rule>
      <rule pattern="_">
        <token type="Keyword"/>
      </rule>
      <rule pattern="([a-z]+)(:)">
        <bygroups>
          <token type="NameNamespace"/>
          <token type="Punctuation"/>
        </bygroups>
      </rule>
      <rule pattern="([a-zÀ-῿぀-퟿-￯][\w$À-῿぀-퟿-￯]*)(\s*)(:-|--&gt;)">
        <bygroups>
          <token type="NameFunction"/>
          <token type="Text"/>
          <token type="Operator"/>
        </bygroups>
      </rule>
      <rule pattern="([a-zÀ-῿぀-퟿-￯][\w$À-῿぀-퟿-￯]*)(\s*)(\()">
        <bygroups>
          <token type="NameFunction"/>
          <token type="Text"/>
          <token type="Punctuation"/>
        </bygroups>
      </rule>
      <rule pattern="[a-zÀ-῿぀-퟿-￯][\w$À-῿぀-퟿-￯]*">
        <token type="LiteralStringAtom"/>
      </rule>
      <rule pattern="[#&amp;*+\-./:&lt;=&gt;?@\\^~¡-¿‐-〿]+">
        <token type="LiteralStringAtom"/>
      </rule>
      <rule pattern="[A-Z_]\w*">
        <token type="NameVariable"/>
      </rule>
      <rule pattern="\s+|[ -‏￰-�￯]">
        <token type="Text"/>
      </rule>
    </state>
    <state name="nested-comment">
      <rule pattern="\*/">
        <token type="CommentMultiline"/>
        <pop depth="1"/>
      </rule>
      <rule pattern="/\*">
        <token type="CommentMultiline"/>
        <push/>
      </rule>
      <rule pattern="[^*/]+">
        <token type="CommentMultiline"/>
      </rule>
      <rule pattern="[*/]">
        <token type="CommentMultiline"/>
      </rule>
    </state>
  </rules>
</lexer>