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

```
<lexer>
```
```
  <config>
```
```
    <name>OpenSCAD</name>
```
```
    <alias>openscad</alias>
```
```
    <filename>*.scad</filename>
```
```
    <mime_type>text/x-scad</mime_type>
```
```
  </config>
```
```
  <rules>
```
```
    <state name="root">
```
```
      <rule pattern="[^\S\n]+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```

      <rule pattern="//(\n|[\w\W]*?[^\\]\n)">

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

      <rule pattern="/(\\\n)?[*][\w\W]*?[*](\\\n)?/">

        <token type="CommentMultiline"/>

```
      </rule>
```

      <rule pattern="/(\\\n)?[*][\w\W]*">

        <token type="CommentMultiline"/>

```
      </rule>
```
```
      <rule pattern="[{}\[\]\(\),;:]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="[*!#%\-+=?/]">
```
```
        <token type="Operator"/>
```
```
      </rule>
```

      <rule pattern="&lt;|&lt;=|==|!=|&gt;=|&gt;|&amp;&amp;|\|\|">

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

      <rule pattern="\$(f[asn]|t|vp[rtd]|children)">

        <token type="NameVariableMagic"/>

```
      </rule>
```
```
      <rule pattern="(undef|PI)\b">
```

        <token type="KeywordConstant"/>

```
      </rule>
```

      <rule pattern="(use|include)((?:\s|\\\\s)+)">

```
        <bygroups>
```

          <token type="KeywordNamespace"/>

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

      <rule pattern="(module)(\s*)([^\s\(]+)">

```
        <bygroups>
```

          <token type="KeywordNamespace"/>

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

          <token type="NameNamespace"/>

```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="(function)(\s*)([^\s\(]+)">

```
        <bygroups>
```

          <token type="KeywordDeclaration"/>

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

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

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

      <rule pattern="\b(function|module|include|use|for|intersection_for|if|else|return)\b">

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

      <rule pattern="\b(circle|square|polygon|text|sphere|cube|cylinder|polyhedron|translate|rotate|scale|resize|mirror|multmatrix|color|offset|hull|minkowski|union|difference|intersection|abs|sign|sin|cos|tan|acos|asin|atan|atan2|floor|round|ceil|ln|log|pow|sqrt|exp|rands|min|max|concat|lookup|str|chr|search|version|version_num|norm|cross|parent_module|echo|import|import_dxf|dxf_linear_extrude|linear_extrude|rotate_extrude|surface|projection|render|dxf_cross|dxf_dim|let|assign|len)\b">

```
        <token type="NameBuiltin"/>
```
```
      </rule>
```
```
      <rule pattern="\bchildren\b">
```

        <token type="NameBuiltinPseudo"/>

```
      </rule>
```

      <rule pattern="&#34;(\\\\|\\&#34;|[^&#34;])*&#34;">

        <token type="LiteralStringDouble"/>

```
      </rule>
```

      <rule pattern="-?\d+(\.\d+)?(e[+-]?\d+)?">

```
        <token type="LiteralNumber"/>
```
```
      </rule>
```
```
      <rule pattern="[a-zA-Z_]\w*">
```
```
        <token type="Name"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="includes">
```

      <rule pattern="(&lt;)([^&gt;]*)(&gt;)">

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

          <token type="CommentPreprocFile"/>

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