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-rw-r--r--dhall/src/phase/normalize.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/dhall/src/phase/normalize.rs b/dhall/src/phase/normalize.rs
index ecad063..405677a 100644
--- a/dhall/src/phase/normalize.rs
+++ b/dhall/src/phase/normalize.rs
@@ -54,6 +54,7 @@ pub fn apply_builtin(b: Builtin, args: Vec<Thunk>) -> Value {
}
(NaturalLit(0), b) => Ok((r, b.clone())),
(_, NaturalLit(0)) => Ok((r, NaturalLit(0))),
+ _ if a == b => Ok((r, NaturalLit(0))),
_ => Err(()),
}
}