Make `iEval` fail in case it is not a proof mode goal.

a051dd3c · Robbert Krebbers · 467b118b · a051dd3c
Commit a051dd3c authored Dec 31, 2017 by Robbert Krebbers
--- a/theories/proofmode/tactics.v
+++ b/theories/proofmode/tactics.v
@@ -82,8 +82,8 @@ Ltac iStartProof :=

 (** * Simplification *)
 Tactic Notation "iEval" tactic(t) :=
-  try iStartProof;
-  try (eapply tac_eval; [t; reflexivity|]).
+  iStartProof;
+  eapply tac_eval; [t; reflexivity|].

 Tactic Notation "iSimpl" := iEval simpl.