Issue #4662 has been updated by tadayoshi funaba.
pd version gives "21-MAY-2011" for today.
some BSD dist's strftime gives "21-May-2011" that is also my choice.
this time i adopted pd version which is same as Time's one.
the one of reasons is "VMS like" if  v means VMS.
i'm not sure, but, anyway, revert.
Is there a reason for this change or was it accidental? It breaks with all previous ruby versions and is also inconsistent with for example %b or %c.