bug #4406 NoSuperfluousElseifFixer - fix invalid escape sequence in character class (remicollet, SpacePossum)

This PR was merged into the 2.15 branch.

Discussion
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NoSuperfluousElseifFixer - fix invalid escape sequence in character class

Try to fix #4405

Commits
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14c9706 add test to show difference between paterns
b8e46cb Fix escape sequence is invalid in character clas

Author: SpacePossum

src/Fixer/ControlStructure/NoSuperfluousElseifFixer.php

@@ -84,7 +84,7 @@ private function convertElseifToIf(Tokens $tokens, $index)
         $whitespace = '';
         for ($previous = $index - 1; $previous > 0; --$previous) {
             $token = $tokens[$previous];
-            if ($token->isWhitespace() && Preg::match('/(\R\V*)$/', $token->getContent(), $matches)) {
+            if ($token->isWhitespace() && Preg::match('/(\R\N*)$/', $token->getContent(), $matches)) {
                 $whitespace = $matches[1];
 
                 break;

tests/Fixer/ControlStructure/NoSuperfluousElseifFixerTest.php

@@ -131,6 +131,9 @@ public function provideFixCases()
                             }
                             '.'
                             continue;
+
+
+
                         }
                         if (6) {
                             return null;
@@ -160,6 +163,9 @@ public function provideFixCases()
                             }
                             '.'
                             continue;
+
+
+
                         } else if (6) {
                             return null;
                         } else {