From e35eb8b6be627804dc99c010d48227487c3f76bf Mon Sep 17 00:00:00 2001
From: Vincent Langlet <vincentlanglet@hotmail.fr>
Date: Tue, 8 Feb 2022 20:59:20 +0100
Subject: [PATCH] Add support for fn

---
 src/Fixer/Operator/BinaryOperatorSpacesFixer.php       | 7 ++++++-
 tests/Fixer/Operator/BinaryOperatorSpacesFixerTest.php | 6 ++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/Fixer/Operator/BinaryOperatorSpacesFixer.php b/src/Fixer/Operator/BinaryOperatorSpacesFixer.php
index 13ab68487dc..1da5fa8ad07 100644
--- a/src/Fixer/Operator/BinaryOperatorSpacesFixer.php
+++ b/src/Fixer/Operator/BinaryOperatorSpacesFixer.php
@@ -531,6 +531,11 @@ private function fixAlignment(Tokens $tokens, array $toAlign): void
 
     private function injectAlignmentPlaceholders(Tokens $tokens, int $startAt, int $endAt, string $tokenContent): void
     {
+        $functionKind = [T_FUNCTION];
+        if (\PHP_VERSION_ID >= 70400) {
+            $functionKind[] = T_FN;
+        }
+
         for ($index = $startAt; $index < $endAt; ++$index) {
             $token = $tokens[$index];
 
@@ -545,7 +550,7 @@ private function injectAlignmentPlaceholders(Tokens $tokens, int $startAt, int $
                 continue;
             }
 
-            if ($token->isGivenKind(T_FUNCTION)) {
+            if ($token->isGivenKind($functionKind)) {
                 ++$this->deepestLevel;
                 $index = $tokens->getNextTokenOfKind($index, ['(']);
                 $index = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $index);
diff --git a/tests/Fixer/Operator/BinaryOperatorSpacesFixerTest.php b/tests/Fixer/Operator/BinaryOperatorSpacesFixerTest.php
index c8326c0fe0b..0a200041147 100644
--- a/tests/Fixer/Operator/BinaryOperatorSpacesFixerTest.php
+++ b/tests/Fixer/Operator/BinaryOperatorSpacesFixerTest.php
@@ -1419,6 +1419,12 @@ function ()
         $d["abc"] = 2;
     }
 );
+',
+            ],
+            [
+                '<?php
+fn ($x = 1) => $x + 3;
+$f = 123;
 ',
             ],
         ];