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

```
<lexer>
```
```
  <config>
```
```
    <name>Brainfuck</name>
```
```
    <alias>brainfuck</alias>
```
```
    <alias>bf</alias>
```
```
    <filename>*.bf</filename>
```
```
    <filename>*.b</filename>
```

    <mime_type>application/x-brainfuck</mime_type>

```
  </config>
```
```
  <rules>
```
```
    <state name="common">
```
```
      <rule pattern="[.,]+">
```
```
        <token type="NameTag"/>
```
```
      </rule>
```
```
      <rule pattern="[+-]+">
```
```
        <token type="NameBuiltin"/>
```
```
      </rule>
```
```
      <rule pattern="[&lt;&gt;]+">
```
```
        <token type="NameVariable"/>
```
```
      </rule>
```

      <rule pattern="[^.,+\-&lt;&gt;\[\]]+">

```
        <token type="Comment"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule pattern="\[">
```
```
        <token type="Keyword"/>
```
```
        <push state="loop"/>
```
```
      </rule>
```
```
      <rule pattern="\]">
```
```
        <token type="Error"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="common"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="loop">
```
```
      <rule pattern="\[">
```
```
        <token type="Keyword"/>
```
```
        <push/>
```
```
      </rule>
```
```
      <rule pattern="\]">
```
```
        <token type="Keyword"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="common"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```

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