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<?php $result = preg_replace('#\[(right)\](((?R)|[^[]+?|\[)*)\[/\\1\]#siU', '', $text); var_dump($text); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $text in /in/O1tkn on line 2 Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/O1tkn on line 2 Warning: Undefined variable $text in /in/O1tkn on line 3 NULL string(0) ""

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