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-rw-r--r--lib/concepts/Mode.ml4
-rw-r--r--lib/concepts/Mode.mli2
2 files changed, 3 insertions, 3 deletions
diff --git a/lib/concepts/Mode.ml b/lib/concepts/Mode.ml
index b3031fc..9c5daa9 100644
--- a/lib/concepts/Mode.ml
+++ b/lib/concepts/Mode.ml
@@ -17,5 +17,5 @@ let exhaustible modes bound =
let project attributes = List.filter (fun {bound; _} -> BatSet.String.subset bound attributes)
-let given attributes =
- List.map (fun {bound; yields} -> {bound= BatSet.String.diff bound attributes; yields})
+let given attribute =
+ List.map (fun {bound; yields} -> {bound= BatSet.String.remove attribute bound; yields})
diff --git a/lib/concepts/Mode.mli b/lib/concepts/Mode.mli
index ba1a04a..0518bca 100644
--- a/lib/concepts/Mode.mli
+++ b/lib/concepts/Mode.mli
@@ -13,4 +13,4 @@ val exhaustible : t -> attributes -> bool
(** the modes still usable when only [attributes] can be bound. *)
val project : attributes -> t -> t
-val given : attributes -> t -> t
+val given : string -> t -> t