Viewing github.com/alecthomas/chroma/lexers/embedded/chaiscript.xml

```
<lexer>
```
```
  <config>
```
```
    <name>ChaiScript</name>
```
```
    <alias>chai</alias>
```
```
    <alias>chaiscript</alias>
```
```
    <filename>*.chai</filename>
```

    <mime_type>text/x-chaiscript</mime_type>

    <mime_type>application/x-chaiscript</mime_type>

```
    <dot_all>true</dot_all>
```
```
  </config>
```
```
  <rules>
```
```
    <state name="dqstring">
```

      <rule pattern="\$\{[^&#34;}]+?\}">

        <token type="LiteralStringInterpol"/>

```
      </rule>
```
```
      <rule pattern="\$">
```

        <token type="LiteralStringDouble"/>

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

        <token type="LiteralStringDouble"/>

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

        <token type="LiteralStringDouble"/>

```
      </rule>
```
```
      <rule pattern="[^\\&#34;$]+">
```

        <token type="LiteralStringDouble"/>

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

        <token type="LiteralStringDouble"/>

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

    <state name="commentsandwhitespace">

```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="//.*?\n">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>
```
```
      <rule pattern="/\*.*?\*/">
```

        <token type="CommentMultiline"/>

```
      </rule>
```
```
      <rule pattern="^\#.*?\n">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="slashstartsregex">
```
```
      <rule>
```

        <include state="commentsandwhitespace"/>

```
      </rule>
```

      <rule pattern="/(\\.|[^[/\\\n]|\[(\\.|[^\]\\\n])*])+/([gim]+\b|\B)">

        <token type="LiteralStringRegex"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="(?=/)">
```
```
        <token type="Text"/>
```

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

```
      </rule>
```
```
      <rule>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="badregex">
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule>
```

        <include state="commentsandwhitespace"/>

```
      </rule>
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="[^\S\n]+">
```
```
        <token type="Text"/>
```
```
      </rule>
```

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

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

        <push state="slashstartsregex"/>

```
      </rule>
```
```
      <rule pattern="[{(\[;,]">
```
```
        <token type="Punctuation"/>
```

        <push state="slashstartsregex"/>

```
      </rule>
```
```
      <rule pattern="[})\].]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="[=+\-*/]">
```
```
        <token type="Operator"/>
```
```
      </rule>
```

      <rule pattern="(for|in|while|do|break|return|continue|if|else|throw|try|catch)\b">

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

        <push state="slashstartsregex"/>

```
      </rule>
```
```
      <rule pattern="(var)\b">
```

        <token type="KeywordDeclaration"/>

        <push state="slashstartsregex"/>

```
      </rule>
```

      <rule pattern="(attr|def|fun)\b">

        <token type="KeywordReserved"/>

```
      </rule>
```
```
      <rule pattern="(true|false)\b">
```

        <token type="KeywordConstant"/>

```
      </rule>
```
```
      <rule pattern="(eval|throw)\b">
```
```
        <token type="NameBuiltin"/>
```
```
      </rule>
```
```
      <rule pattern="`\S+`">
```
```
        <token type="NameBuiltin"/>
```
```
      </rule>
```
```
      <rule pattern="[$a-zA-Z_]\w*">
```
```
        <token type="NameOther"/>
```
```
      </rule>
```

      <rule pattern="[0-9][0-9]*\.[0-9]+([eE][0-9]+)?[fd]?">

        <token type="LiteralNumberFloat"/>

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

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="[0-9]+">
```

        <token type="LiteralNumberInteger"/>

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

        <token type="LiteralStringDouble"/>

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

      <rule pattern="&#39;(\\\\|\\&#39;|[^&#39;])*&#39;">

        <token type="LiteralStringSingle"/>

```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```

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