From 423c9d0bba4cabaa0c070d7fec7ad6931722a4ac Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonyg@leastfixedpoint.com>
Date: Tue, 13 Jul 2021 15:59:27 +0200
Subject: [PATCH] Better Debug for SignedInteger

---
 .../rust/preserves/src/value/signed_integer.rs            | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/implementations/rust/preserves/src/value/signed_integer.rs b/implementations/rust/preserves/src/value/signed_integer.rs
index 7dde714..d6c00f3 100644
--- a/implementations/rust/preserves/src/value/signed_integer.rs
+++ b/implementations/rust/preserves/src/value/signed_integer.rs
@@ -16,9 +16,15 @@ pub enum SignedIntegerRepr {
     Big(Box<BigInt>),
 }
 
-#[derive(Clone, Debug, PartialEq, Eq, Hash)]
+#[derive(Clone, PartialEq, Eq, Hash)]
 pub struct SignedInteger(SignedIntegerRepr);
 
+impl fmt::Debug for SignedInteger {
+    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+        write!(f, "{}n", self)
+    }
+}
+
 impl fmt::Display for SignedInteger {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
         match self.repr() {