Pure/tactic/compose_inst_tac: when catching exception THM, prints the message before failing!!  This reports the reason for failure in cases like    by (res_inst_tac [("P", "?Q(a)")] mp 1); in which ?Q appears in mp with a different type.
Pure/tactic/compose_inst_tac: when catching exception THM, prints the
message before failing!!  This reports the reason for failure in cases like
   by (res_inst_tac [("P", "?Q(a)")] mp 1);
in which ?Q appears in mp with a different type.

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle