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<?php $str = 'a,b\\\,c,d'; preg_match_all('/(?:\\.|[^,]+)/', $str, $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> array(4) { [0]=> string(1) "a" [1]=> string(3) "b\\" [2]=> string(1) "c" [3]=> string(1) "d" } }

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