REPEAT_GTCL : (thm_tactical -> thm_tactical)
REPEAT_GTCL ttl ttac th goalREPEAT_GTCL repeatedly modifies the theorem according to ttl till the result of handing it to ttac and applying it to the goal fails (this may be no times at all).
REPEAT_GTCL (IMP_RES_THEN ASSUME_TAC) th