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

```
<lexer>
```
```
  <config>
```
```
    <name>Turing</name>
```
```
    <alias>turing</alias>
```
```
    <filename>*.turing</filename>
```
```
    <filename>*.tu</filename>
```

    <mime_type>text/x-turing</mime_type>

```
  </config>
```
```
  <rules>
```
```
    <state name="root">
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\\\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="%(.*?)\n">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>
```

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

        <token type="CommentMultiline"/>

```
      </rule>
```

      <rule pattern="(var|fcn|function|proc|procedure|process|class|end|record|type|begin|case|loop|for|const|union|monitor|module|handler)\b">

        <token type="KeywordDeclaration"/>

```
      </rule>
```

      <rule pattern="(all|asm|assert|bind|bits|body|break|by|cheat|checked|close|condition|decreasing|def|deferred|else|elsif|exit|export|external|flexible|fork|forward|free|get|if|implement|import|include|inherit|init|invariant|label|new|objectclass|of|opaque|open|packed|pause|pervasive|post|pre|priority|put|quit|read|register|result|seek|self|set|signal|skip|tag|tell|then|timeout|to|unchecked|unqualified|wait|when|write)\b">

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

        <token type="KeywordConstant"/>

```
      </rule>
```

      <rule pattern="(addressint|boolean|pointer|string|array|real4|real8|nat1|int8|int4|int2|nat2|nat4|nat8|int1|real|char|enum|nat|int)\b">

```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
      <rule pattern="\d+i">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```

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

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

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

```
        <token type="LiteralNumber"/>
```
```
      </rule>
```
```
      <rule pattern="\d+[Ee][-+]\d+i">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```

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

        <token type="LiteralNumberFloat"/>

```
      </rule>
```

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

        <token type="LiteralNumberFloat"/>

```
      </rule>
```
```
      <rule pattern="0[0-7]+">
```

        <token type="LiteralNumberOct"/>

```
      </rule>
```

      <rule pattern="0[xX][0-9a-fA-F]+">

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="(0|[1-9][0-9]*)">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```

      <rule pattern="(div|mod|rem|\*\*|=|&lt;|&gt;|&gt;=|&lt;=|not=|not|and|or|xor|=&gt;|in|shl|shr|-&gt;|~|~=|~in|&amp;|:=|\.\.|[\^+\-*/&amp;#])">

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

      <rule pattern="&#39;(\\[&#39;&#34;\\abfnrtv]|\\x[0-9a-fA-F]{2}|\\[0-7]{1,3}|\\u[0-9a-fA-F]{4}|\\U[0-9a-fA-F]{8}|[^\\])&#39;">

        <token type="LiteralStringChar"/>

```
      </rule>
```

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

```
        <token type="LiteralString"/>
```
```
      </rule>
```
```
      <rule pattern="[()\[\]{}.,:]">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="[^\W\d]\w*">
```
```
        <token type="NameOther"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```