feat(ForbiddenComments): Add sniff to catch doule dots in comments

coder_sniffer/Drupal/ruleset.xml

@@ -127,6 +127,15 @@
 
   <!-- SlevomatCodingStandard sniffs -->
   <rule ref="SlevomatCodingStandard.Classes.BackedEnumTypeSpacing"/>
+  <rule ref="SlevomatCodingStandard.Commenting.ForbiddenComments">
+    <properties>
+       <property name="forbiddenCommentPatterns" type="array">
+         <!-- Catch comments ending in 2 dots, bot leave comments ending in 3
+         dots alone. -->
+         <element value="/(?&lt;!\.)\.\.(?!\.)$/"/>
+       </property>
+    </properties>
+  </rule>
   <rule ref="SlevomatCodingStandard.ControlStructures.RequireNullCoalesceOperator"/>
   <rule ref="SlevomatCodingStandard.PHP.ShortList"/>
   <rule ref="SlevomatCodingStandard.TypeHints.DeclareStrictTypes">

tests/Drupal/bad/BadUnitTest.php

@@ -364,7 +364,8 @@ protected function getErrorList(string $testFile): array
                 849 => 2,
                 860 => 2,
                 867 => 1,
-                871 => 2,
+                872 => 1,
+                876 => 2,
             ];
         }//end switch
 

tests/Drupal/bad/bad.php

@@ -868,4 +868,9 @@ function test30(TestType $a = NULL) {
   echo "Hello";
 }
 
+/**
+ * Comments are not allowed to end in 2 dots..
+ */
+function test31() {}
+
 ?>

tests/Drupal/bad/bad.php.fixed

@@ -921,3 +921,8 @@ function test29(
 function test30(?TestType $a = NULL) {
   echo "Hello";
 }
+
+/**
+ * Comments are not allowed to end in 2 dots.
+ */
+function test31() {}

tests/Drupal/good/good.php

@@ -2060,3 +2060,8 @@ public function applies(RouteMatchInterface $route_match /* , CacheableMetadata
 function pdo_weird_return_type($param) {
   return pdo();
 }
+
+/**
+ * Comments are allowed to end in 3 dots...
+ */
+function comment_test_dots() {}