From 7c28b474516c60df18d57f47aea83bb8431def2c Mon Sep 17 00:00:00 2001
From: Dr Maxim Orlovsky <orlovsky@pandoracore.com>
Date: Sun, 9 Jan 2022 20:46:51 +0100
Subject: [PATCH] LowerHex and UpperHex implementations for FutureLeafVersion

---
 src/util/taproot.rs | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/util/taproot.rs b/src/util/taproot.rs
index 9a1043e7..691b25b6 100644
--- a/src/util/taproot.rs
+++ b/src/util/taproot.rs
@@ -98,7 +98,6 @@ sha256t_hash_newtype!(TapSighashHash, TapSighashTag, MIDSTATE_TAPSIGHASH, 64,
 );
 
 impl TapTweakHash {
-
     /// Create a new BIP341 [`TapTweakHash`] from key and tweak
     /// Produces H_taptweak(P||R) where P is internal key and R is the merkle root
     pub fn from_key_and_tweak(
@@ -791,6 +790,20 @@ impl fmt::Display for FutureLeafVersion {
     }
 }
 
+impl fmt::LowerHex for FutureLeafVersion {
+    #[inline]
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::LowerHex::fmt(&self.0, f)
+    }
+}
+
+impl fmt::UpperHex for FutureLeafVersion {
+    #[inline]
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt::UpperHex::fmt(&self.0, f)
+    }
+}
+
 /// The leaf version for tapleafs
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub enum LeafVersion {