Fixed a problem introduced in r12607 after pattern_of_constr served

both for interpreting ltac patterns and patterns of "change pat with
term".  In particular, in the current status, Goal evars needs
mandatorily to have the hole_kind GoalEvar. If this is too complicated
to enforce, we might eventually consider another approach to the
question of interpreting patterns in general.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13428 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 17 insertions, 0 deletions

diff --git a/test-suite/success/ltac.v b/test-suite/success/ltac.v
index 32c6d1431..a8d1ba7f5 100644
--- a/test-suite/success/ltac.v
+++ b/test-suite/success/ltac.v
@@ -281,3 +281,20 @@ Goal forall x:nat, True.
 intro x.
 Fail clear x; f x.
 Abort.
+
+(* Do not consider evars as unification holes in Ltac matching (and at
+   least not as holes unrelated to the original evars)
+   [Example adapted from Ynot code]
+ *)
+
+Ltac not_eq e1 e2 :=
+  match e1 with
+    | e2 => fail 1
+    | _ => idtac
+  end.
+
+Goal True.
+evar(foo:nat).
+let evval := eval compute in foo in not_eq evval 1.
+let evval := eval compute in foo in not_eq 1 evval.
+Abort.