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<?php echo preg_replace('/[^\d\sa-zA-Z\-.]/i', '', 'abc 0123 a-b-c 0-1-2-3 A.B.C 1.2.3 ');
Output for git.master, git.master_jit, rfc.property-hooks
abc 0123 a-b-c 0-1-2-3 A.B.C 1.2.3

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