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<?php # The problem, hyphen use within class in incorrect position. var_dump(preg_match('~[0-9\w-.]*~', '')); # The fix, or we escape the hyphen or we put it last var_dump(preg_match('~[0-9\w\-.]*~', '')); var_dump(preg_match('~[0-9\w-.-]*~', ''));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: preg_match(): Compilation failed: invalid range in character class at offset 6 in /in/05LeL on line 3 bool(false) int(1) Warning: preg_match(): Compilation failed: invalid range in character class at offset 6 in /in/05LeL on line 6 bool(false)

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