<section name="Release 13.2.0">

<div class="releaseDate">05.02.2026</div>

<p>New:</p>

<ul>

<li>

new Check: NumericalPrefixesInfixesSuffixesCharacterCaseCheck numerical prefixes,

infixes, and suffixes should be lowercase, except for &quot;L&quot;.

Author: Aman Baliyan

<a href="https://github.com/checkstyle/checkstyle/issues/16678">#16678</a>

</li>

</ul>

<p>Bug fixes:</p>

<ul>

<li>

False-negative: HexLiteralCase does not throw violation on Hex float literals.

Author: Aman Baliyan

<a href="https://github.com/checkstyle/checkstyle/issues/18653">#18653</a>

</li>

<li>

False positive: JavadocParagraph reports violation when `&lt;p&gt;` is after tags.

Author: Aman Baliyan

<a href="https://github.com/checkstyle/checkstyle/issues/18486">#18486</a>

</li>

</ul>

<p>Notes:</p>

<ul>

<li>

Documentation examples for MultiFileRegexpHeader does not have any header.

Author: Anushree Bondia

<a href="https://github.com/checkstyle/checkstyle/issues/18809">#18809</a>

</li>

<li>

Update `JavadocCommentsTokenTypes.java` to new format of AST print.

Author: Yukti Nandwana, VidytBhuolia, talha atif

<a href="https://github.com/checkstyle/checkstyle/issues/17882">#17882</a>

</li>

<li>

Redundant `tokens` property in `CustomImportOrder` of `google_checks.xml`.

Author: pirzada-ahmadfaraz

<a href="https://github.com/checkstyle/checkstyle/issues/18612">#18612</a>

</li>

<li>

Resolve error-prone violations.

Author: Kairav Mittal, Brijeshthummar02

<a href="https://github.com/checkstyle/checkstyle/issues/18599">#18599</a>

</li>

<li>

Fix SpotBugs UWF_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR warning in IndentationCheck.

Author: smita_1078

<a href="https://github.com/checkstyle/checkstyle/issues/18843">#18843</a>

</li>

<li>

Split openrewrite-refaster-rules ci job into two jobs.

Author: Youssef Alaa

<a href="https://github.com/checkstyle/checkstyle/issues/18856">#18856</a>

</li>

<li>

Enable pitest EXPERIMENTAL_MEMBER_VARIABLE.

Author: ayushactiveat, Youssef Alaa

<a href="https://github.com/checkstyle/checkstyle/issues/18836">#18836</a>

</li>

<li>

Add validation for single commit in pull .

Author: Vincent Potucek

<a href="https://github.com/checkstyle/checkstyle/issues/18819">#18819</a>

</li>

<li>

Update all pitest profiles to have mutationThreshold=99.

Author: ayushactiveat

<a href="https://github.com/checkstyle/checkstyle/issues/18845">#18845</a>

</li>

<li>

Resolve violations from spotbugs sb-contrib 7.6.0.

Author: Youssef Alaa

<a href="https://github.com/checkstyle/checkstyle/issues/13351">#13351</a>

</li>

<li>

Convert regressions that use maven-checkstyle-plugin to CLI based.

Author: vivek-0509

<a href="https://github.com/checkstyle/checkstyle/issues/11602">#11602</a>

</li>

<li>

Define violation messages for all violations.

Author: Kairav Mittal, Adam Gamil

<a href="https://github.com/checkstyle/checkstyle/issues/15456">#15456</a>

</li>

<li>

dependency: bump pmd.version from 7.20.0 to 7.21.0.

Author: Zaheer Ahmad

<a href="https://github.com/checkstyle/checkstyle/issues/18801">#18801</a>

</li>

<li>

SarifLoggerTest.java to use verifyWithInlineConfigParserAndLogger.

Author: Suryanshu Agrawal

<a href="https://github.com/checkstyle/checkstyle/issues/16361">#16361</a>

</li>

</ul>

</section>