note
ikegami
<p>No, <c>/[0-9]{2} /</c> does not match a subset of what <c>/ [0-9] {2, 4}/</c> matches.
<p><c>/[0-9]{2} /</c> only matches <c>"99\x{20}"</c>, where <c>9</c> can by any digit 0-9
<br><c>/ [0-9] {2, 4}/</c> only matches <c>"\x{20}9\x{20}{2,\x{20}4}"</c>, where <c>9</c> can by any digit 0-9
<p><b>Update</b>: Fixed copy and paste bug in in second item.
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