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<?php $str = str_repeat("{ \n}", 20); preg_replace('{((.*\n+)+)}','x',$str); var_dump($str);
Output for git.master, git.master_jit, rfc.property-hooks
string(80) "{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }"

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