From d57af58b71a9be8052cb1e0d6c0cc4f902487d0f Mon Sep 17 00:00:00 2001
From: Casey Rodarmor <casey@rodarmor.com>
Date: Tue, 10 Oct 2023 11:38:22 -0700
Subject: [PATCH] Don't encode divisibility if zero (#2510)

---
 src/runes.rs           | 44 +++++++++++++++++++++---------------------
 src/runes/runestone.rs |  5 ++++-
 2 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/src/runes.rs b/src/runes.rs
index fe265cae24..95c174b63d 100644
--- a/src/runes.rs
+++ b/src/runes.rs
@@ -1054,17 +1054,17 @@ mod tests {
       [
         (
           OutPoint {
-            txid: txid1,
+            txid: txid0,
             vout: 0
           },
-          vec![(id1, u128::max_value())]
+          vec![(id0, u128::max_value())]
         ),
         (
           OutPoint {
-            txid: txid0,
+            txid: txid1,
             vout: 0
           },
-          vec![(id0, u128::max_value())]
+          vec![(id1, u128::max_value())]
         ),
       ]
     );
@@ -1225,17 +1225,17 @@ mod tests {
       [
         (
           OutPoint {
-            txid: txid1,
+            txid: txid0,
             vout: 0
           },
-          vec![(id1, u128::max_value())]
+          vec![(id0, u128::max_value())]
         ),
         (
           OutPoint {
-            txid: txid0,
+            txid: txid1,
             vout: 0
           },
-          vec![(id0, u128::max_value())]
+          vec![(id1, u128::max_value())]
         ),
       ]
     );
@@ -1469,18 +1469,18 @@ mod tests {
       [
         (
           OutPoint {
-            txid: txid1,
+            txid: txid0,
             vout: 0
           },
-          vec![(id1, u128::max_value())]
+          vec![(id0, u128::max_value())]
         ),
         (
           OutPoint {
-            txid: txid0,
+            txid: txid1,
             vout: 0
           },
-          vec![(id0, u128::max_value())]
-        )
+          vec![(id1, u128::max_value())]
+        ),
       ]
     );
 
@@ -1717,17 +1717,17 @@ mod tests {
       [
         (
           OutPoint {
-            txid: txid1,
+            txid: txid0,
             vout: 0
           },
-          vec![(id1, u128::max_value())]
+          vec![(id0, u128::max_value())]
         ),
         (
           OutPoint {
-            txid: txid0,
+            txid: txid1,
             vout: 0
           },
-          vec![(id0, u128::max_value())]
+          vec![(id1, u128::max_value())]
         ),
       ]
     );
@@ -1942,18 +1942,18 @@ mod tests {
       [
         (
           OutPoint {
-            txid: txid1,
+            txid: txid0,
             vout: 0
           },
-          vec![(id1, u128::max_value())]
+          vec![(id0, u128::max_value())]
         ),
         (
           OutPoint {
-            txid: txid0,
+            txid: txid1,
             vout: 0
           },
-          vec![(id0, u128::max_value())]
-        )
+          vec![(id1, u128::max_value())]
+        ),
       ]
     );
 
diff --git a/src/runes/runestone.rs b/src/runes/runestone.rs
index 7ba0af5907..8e69419ab6 100644
--- a/src/runes/runestone.rs
+++ b/src/runes/runestone.rs
@@ -64,7 +64,10 @@ impl Runestone {
 
     if let Some(etching) = self.etching {
       varint::encode_to_vec(etching.rune.0, &mut payload);
-      varint::encode_to_vec(etching.divisibility.into(), &mut payload);
+
+      if etching.divisibility != 0 {
+        varint::encode_to_vec(etching.divisibility.into(), &mut payload);
+      }
     }
 
     let mut builder = script::Builder::new()