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-rw-r--r--src/elab_util.sig3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/elab_util.sig b/src/elab_util.sig
index fbe208ad..934779ff 100644
--- a/src/elab_util.sig
+++ b/src/elab_util.sig
@@ -73,6 +73,9 @@ structure Con : sig
con : 'context * Elab.con' * 'state -> 'state,
bind : 'context * binder -> 'context}
-> 'context -> 'state -> Elab.con -> 'state
+ val fold : {kind : Elab.kind' * 'state -> 'state,
+ con : Elab.con' * 'state -> 'state}
+ -> 'state -> Elab.con -> 'state
end
structure Exp : sig