Viewing github.com/alecthomas/chroma/lexers/embedded/standard

```
<lexer>
```
```
  <config>
```
```
    <name>Standard ML</name>
```
```
    <alias>sml</alias>
```
```
    <filename>*.sml</filename>
```
```
    <filename>*.sig</filename>
```
```
    <filename>*.fun</filename>
```

    <mime_type>text/x-standardml</mime_type>

    <mime_type>application/x-standardml</mime_type>

```
  </config>
```
```
  <rules>
```
```
    <state name="delimiters">
```
```
      <rule pattern="\(|\[|\{">
```
```
        <token type="Punctuation"/>
```
```
        <push state="main"/>
```
```
      </rule>
```
```
      <rule pattern="\)|\]|\}">
```
```
        <token type="Punctuation"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="\b(let|if|local)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="main" state="main"/>

```
      </rule>
```

      <rule pattern="\b(struct|sig|while)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="main"/>
```
```
      </rule>
```

      <rule pattern="\b(do|else|end|in|then)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule>
```
```
        <push state="main"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="breakout">
```

      <rule pattern="(?=\b(where|do|handle|if|sig|op|while|case|as|else|signature|andalso|struct|infixr|functor|in|structure|then|local|rec|end|fun|of|orelse|val|include|fn|with|exception|let|and|infix|sharing|datatype|type|abstype|withtype|eqtype|nonfix|raise|open)\b(?!\&#39;))">

```
        <token type="Text"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="tyvarseq">
```
```
      <rule pattern="\s">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\(\*">
```

        <token type="CommentMultiline"/>

```
        <push state="comment"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```

      <rule pattern="[a-zA-Z][\w&#39;]*">

```
        <token type="Name"/>
```
```
      </rule>
```
```
      <rule pattern=",">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="\)">
```
```
        <token type="Punctuation"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="[!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+">

```
        <token type="Name"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="char">
```
```
      <rule pattern="[^&#34;\\]">
```

        <token type="LiteralStringChar"/>

```
      </rule>
```

      <rule pattern="\\[\\&#34;abtnvfr]">

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\\^[\x40-\x5e]">
```

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\[0-9]{3}">
```

        <token type="LiteralStringEscape"/>

```
      </rule>
```

      <rule pattern="\\u[0-9a-fA-F]{4}">

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\\s+\\">
```

        <token type="LiteralStringInterpol"/>

```
      </rule>
```
```
      <rule pattern="&#34;">
```

        <token type="LiteralStringChar"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="datbind">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="\b(and)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="dname"/>

```
      </rule>
```

      <rule pattern="\b(withtype)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="tname"/>

```
      </rule>
```

      <rule pattern="\b(of)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="(\|)(\s*)([a-zA-Z][\w&#39;]*)">

```
        <bygroups>
```
```
          <token type="Punctuation"/>
```
```
          <token type="Text"/>
```
```
          <token type="NameClass"/>
```
```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="(\|)(\s+)([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <bygroups>
```
```
          <token type="Punctuation"/>
```
```
          <token type="Text"/>
```
```
          <token type="NameClass"/>
```
```
        </bygroups>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="core"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="string">
```
```
      <rule pattern="[^&#34;\\]">
```

        <token type="LiteralStringDouble"/>

```
      </rule>
```

      <rule pattern="\\[\\&#34;abtnvfr]">

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\\^[\x40-\x5e]">
```

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\[0-9]{3}">
```

        <token type="LiteralStringEscape"/>

```
      </rule>
```

      <rule pattern="\\u[0-9a-fA-F]{4}">

        <token type="LiteralStringEscape"/>

```
      </rule>
```
```
      <rule pattern="\\\s+\\">
```

        <token type="LiteralStringInterpol"/>

```
      </rule>
```
```
      <rule pattern="&#34;">
```

        <token type="LiteralStringDouble"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="tname">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```
```
      <rule pattern="\(">
```
```
        <token type="Punctuation"/>
```
```
        <push state="tyvarseq"/>
```
```
      </rule>
```

      <rule pattern="=(?![!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="Punctuation"/>
```

        <push state="#pop" state="typbind"/>

```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="KeywordType"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="dname">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```
```
      <rule pattern="\(">
```
```
        <token type="Punctuation"/>
```
```
        <push state="tyvarseq"/>
```
```
      </rule>
```

      <rule pattern="(=)(\s*)(datatype)">

```
        <bygroups>
```
```
          <token type="Punctuation"/>
```
```
          <token type="Text"/>
```

          <token type="KeywordReserved"/>

```
        </bygroups>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="=(?![!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="Punctuation"/>
```

        <push state="#pop" state="datbind" state="datcon"/>

```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="KeywordType"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="typbind">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="\b(and)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="tname"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="core"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="ename">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="(exception|and)\b(\s+)([a-zA-Z][\w&#39;]*)">

```
        <bygroups>
```

          <token type="KeywordReserved"/>

```
          <token type="Text"/>
```
```
          <token type="NameClass"/>
```
```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="(exception|and)\b(\s*)([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <bygroups>
```

          <token type="KeywordReserved"/>

```
          <token type="Text"/>
```
```
          <token type="NameClass"/>
```
```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="\b(of)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="core"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="vname">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```
```
      <rule pattern="\(">
```
```
        <token type="Punctuation"/>
```
```
        <push state="tyvarseq"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)(\s*)(=(?![!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+))">

```
        <bygroups>
```
```
          <token type="NameVariable"/>
```
```
          <token type="Text"/>
```
```
          <token type="Punctuation"/>
```
```
        </bygroups>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)(\s*)(=(?![!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+))">

```
        <bygroups>
```
```
          <token type="NameVariable"/>
```
```
          <token type="Text"/>
```
```
          <token type="Punctuation"/>
```
```
        </bygroups>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="NameVariable"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="NameVariable"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="sname">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="breakout"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="NameNamespace"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="main-fun">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
      <rule pattern="\s">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\(\*">
```

        <token type="CommentMultiline"/>

```
        <push state="comment"/>
```
```
      </rule>
```

      <rule pattern="\b(fun|and)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="fname"/>
```
```
      </rule>
```

      <rule pattern="\b(val)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="main" state="vname"/>

```
      </rule>
```
```
      <rule pattern="\|">
```
```
        <token type="Punctuation"/>
```
```
        <push state="fname"/>
```
```
      </rule>
```

      <rule pattern="\b(case|handle)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="main"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="delimiters"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="core"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="datcon">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="NameClass"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="NameClass"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="dotted">
```

      <rule pattern="([a-zA-Z][\w&#39;]*)(\.)">

```
        <token type="NameNamespace"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="Name"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="Name"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="\s+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="main">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="\b(val|and)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="vname"/>
```
```
      </rule>
```

      <rule pattern="\b(fun)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

        <push state="#pop" state="main-fun" state="fname"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="delimiters"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="core"/>
```
```
      </rule>
```
```
      <rule pattern="\S+">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="comment">
```
```
      <rule pattern="[^(*)]">
```

        <token type="CommentMultiline"/>

```
      </rule>
```
```
      <rule pattern="\(\*">
```

        <token type="CommentMultiline"/>

```
        <push/>
```
```
      </rule>
```
```
      <rule pattern="\*\)">
```

        <token type="CommentMultiline"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="[(*)]">
```

        <token type="CommentMultiline"/>

```
      </rule>
```
```
    </state>
```
```
    <state name="whitespace">
```
```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\(\*">
```

        <token type="CommentMultiline"/>

```
        <push state="comment"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="core">
```

      <rule pattern="(_|\}|\{|\)|;|,|\[|\(|\]|\.\.\.)">

```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="#&#34;">
```

        <token type="LiteralStringChar"/>

```
        <push state="char"/>
```
```
      </rule>
```
```
      <rule pattern="&#34;">
```

        <token type="LiteralStringDouble"/>

```
        <push state="string"/>
```
```
      </rule>
```

      <rule pattern="~?0x[0-9a-fA-F]+">

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="0wx[0-9a-fA-F]+">
```

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="0w\d+">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```

      <rule pattern="~?\d+\.\d+[eE]~?\d+">

        <token type="LiteralNumberFloat"/>

```
      </rule>
```
```
      <rule pattern="~?\d+\.\d+">
```

        <token type="LiteralNumberFloat"/>

```
      </rule>
```
```
      <rule pattern="~?\d+[eE]~?\d+">
```

        <token type="LiteralNumberFloat"/>

```
      </rule>
```
```
      <rule pattern="~?\d+">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```
```
      <rule pattern="#\s*[1-9][0-9]*">
```
```
        <token type="NameLabel"/>
```
```
      </rule>
```

      <rule pattern="#\s*([a-zA-Z][\w&#39;]*)">

```
        <token type="NameLabel"/>
```
```
      </rule>
```

      <rule pattern="#\s+([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="NameLabel"/>
```
```
      </rule>
```

      <rule pattern="\b(datatype|abstype)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="dname"/>
```
```
      </rule>
```

      <rule pattern="(?=\b(exception)\b(?!\&#39;))">

```
        <token type="Text"/>
```
```
        <push state="ename"/>
```
```
      </rule>
```

      <rule pattern="\b(functor|include|open|signature|structure)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="sname"/>
```
```
      </rule>
```

      <rule pattern="\b(type|eqtype)\b(?!\&#39;)">

        <token type="KeywordReserved"/>

```
        <push state="tname"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)(\.)">

```
        <token type="NameNamespace"/>
```
```
        <push state="dotted"/>
```
```
      </rule>
```

      <rule pattern="\b(abstype|and|andalso|as|case|datatype|do|else|end|exception|fn|fun|handle|if|in|infix|infixr|let|local|nonfix|of|op|open|orelse|raise|rec|then|type|val|with|withtype|while|eqtype|functor|include|sharing|sig|signature|struct|structure|where)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="Name"/>
```
```
      </rule>
```

      <rule pattern="\b(:|\|,=|=&gt;|-&gt;|#|:&gt;)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="Name"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="fname">
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="\&#39;[\w\&#39;]*">

```
        <token type="NameDecorator"/>
```
```
      </rule>
```
```
      <rule pattern="\(">
```
```
        <token type="Punctuation"/>
```
```
        <push state="tyvarseq"/>
```
```
      </rule>
```

      <rule pattern="([a-zA-Z][\w&#39;]*)">

```
        <token type="NameFunction"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="([!%&amp;$#+\-/:&lt;=&gt;?@\\~`^|*]+)">

```
        <token type="NameFunction"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```