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<?php $matches = array(); var_dump(preg_match_all('/[^a-zA-Z0-9\.-\s]+/', '[[-?)', $matches)); var_dump($matches); $matches = array(); var_dump(preg_match_all('/[^a-zA-Z0-9\.\-\s]+/', '[[-?)', $matches)); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match_all(): Compilation failed: invalid range in character class at offset 16 in /in/N9LER on line 4 bool(false) array(0) { } int(2) array(1) { [0]=> array(2) { [0]=> string(2) "[[" [1]=> string(2) "?)" } }

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