final touch: fix escape

Author: samsonasik

rules-tests/Php85/Rector/ShellExec/ShellExecFunctionCallOverBackticksRector/Fixture/multi_variable.php.inc

@@ -0,0 +1,35 @@
+<?php
+
+namespace Rector\Tests\Php85\Rector\ShellExec\ShellExecFunctionCallOverBackticksRector\Fixture;
+
+class MultiVariable
+{
+    public function run()
+    {
+        $a = 'X';
+        $b = 'Y';
+        $output = `echo $a ' and ' $b`;
+
+        echo $output;
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\Php85\Rector\ShellExec\ShellExecFunctionCallOverBackticksRector\Fixture;
+
+class MultiVariable
+{
+    public function run()
+    {
+        $a = 'X';
+        $b = 'Y';
+        $output = shell_exec('echo ' . $a .  ' and ' . $b);
+
+        echo $output;
+    }
+}
+
+?>

rules/Php85/Rector/ShellExec/ShellExecFunctionCallOverBackticksRector.php

@@ -59,9 +59,7 @@ public function refactor(Node $node): ?Node
         $exprs = [];
         foreach ($node->parts as $part) {
             if ($part instanceof InterpolatedStringPart) {
-                // keep as single-quoted string literal and escape single quotes inside
-                $escaped = str_replace("'", "\\'", $part->value);
-                $exprs[] = new String_($escaped);
+                $exprs[] = new String_($part->value);
                 continue;
             }