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<?php $re = '/([-]{1,2})(\\w+)/'; $str = "--argument"; preg_match($re, $str, $matches); var_dump($matches); echo $matches[1] === '--';
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(10) "--argument" [1]=> string(2) "--" [2]=> string(8) "argument" } 1

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