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-rw-r--r--lib/serialize.ml4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/serialize.ml b/lib/serialize.ml
index 04405ac1b..3ad508d74 100644
--- a/lib/serialize.ml
+++ b/lib/serialize.ml
@@ -37,6 +37,8 @@ type 'a call =
| Quit
| About
+type unknown
+
(** The structure that coqtop should implement *)
type handler = {
@@ -476,7 +478,7 @@ let of_answer (q : 'a call) (r : 'a value) =
in
of_value convert r
-let to_answer xml =
+let to_answer xml _ =
let rec convert elt = match elt with
| Element (tpe, attrs, l) ->
begin match tpe with