Dismbiguates purpose of parens in PCRE character group

Author: weierophinney

src/Uri.php

@@ -556,7 +556,7 @@ private function filterScheme($scheme)
     private function filterPath($path)
     {
         $path = preg_replace_callback(
-            '/(?:[^(' . self::CHAR_UNRESERVED . '):@&=\+\$,\/;%]+|%(?![A-Fa-f0-9]{2}))/u',
+            '/(?:[^' . self::CHAR_UNRESERVED . ')(:@&=\+\$,\/;%]+|%(?![A-Fa-f0-9]{2}))/u',
             [$this, 'urlEncodeChar'],
             $path
         );