cheat/vendor/github.com/alecthomas/chroma/v2/lexers/embedded/diff.xml

<lexer>
  <config>
    <name>Diff</name>
    <alias>diff</alias>
    <alias>udiff</alias>
    <filename>*.diff</filename>
    <filename>*.patch</filename>
    <mime_type>text/x-diff</mime_type>
    <mime_type>text/x-patch</mime_type>
    <ensure_nl>true</ensure_nl>
  </config>
  <rules>
    <state name="root">
      <rule pattern=" .*\n">
        <token type="Text"/>
      </rule>
      <rule pattern="\d+(,\d+)?(a|c|d)\d+(,\d+)?\n">
        <token type="GenericSubheading"/>
      </rule>
      <rule pattern="---\n">
        <token type="GenericStrong"/>
      </rule>
      <rule pattern="&lt; .*\n">
        <token type="GenericDeleted"/>
      </rule>
      <rule pattern="&gt; .*\n">
        <token type="GenericInserted"/>
      </rule>
      <rule pattern="\+.*\n">
        <token type="GenericInserted"/>
      </rule>
      <rule pattern="-.*\n">
        <token type="GenericDeleted"/>
      </rule>
      <rule pattern="!.*\n">
        <token type="GenericStrong"/>
      </rule>
      <rule pattern="@.*\n">
        <token type="GenericSubheading"/>
      </rule>
      <rule pattern="([Ii]ndex|diff).*\n">
        <token type="GenericHeading"/>
      </rule>
      <rule pattern="=.*\n">
        <token type="GenericHeading"/>
      </rule>
      <rule pattern=".*\n">
        <token type="Text"/>
      </rule>
    </state>
  </rules>
</lexer>