Squiz.WhiteSpace.OperatorSpacing false positive for negation in arrow function

[mabar]

Describe the bug
Minus - used as negation of brackets result is okay in function but not in fn

Code sample

This is reported

static fn(DateTime $a, DateTime $b): int => -($a->getTimestamp() <=> $b->getTimestamp())

This is not reported

static function (DateTime $a, DateTime $b): int {
	return -($a->getTimestamp() <=> $b->getTimestamp());
}

Custom ruleset

<ruleset>
  <rule ref="Squiz.WhiteSpace.OperatorSpacing">
		<properties>
			<property name="ignoreNewlines" value="true"/>
		</properties>
	</rule>
</ruleset>

To reproduce

1. Create a file called test.php with the code sample above
2. Create a file called ruleset.xml with custom ruleset above
3. Run phpcs test.php --standard=ruleset.xml
4. See error message displayed

Expected 1 space after "-"; 0 found (Squiz.WhiteSpace.OperatorSpacing.NoSpaceAfter)

Expected behavior

Code is not reported as invalid or at least have same behavior for both contexts (function and fn)

[jrfnl]

Confirmed. I have a fix ready for this, but the PR would conflict with open PRs #3102 and #3103, so I'll wait with pulling it until those have been merged.

Thanks for reporting this @mabar!

[jrfnl]

As PRs #3102 and #3103 have been merged, I've pulled the fix for this issue - PR #3129. Testing appreciated.