1 files changed, 8 insertions, 2 deletions
diff --git a/src/util/eco.rs b/src/util/eco.rs
index a52a163c..7fe1ac9c 100644
--- a/src/util/eco.rs
+++ b/src/util/eco.rs
@@ -274,14 +274,20 @@ impl PartialOrd for EcoString {
     }
 }
 
-impl Add<&Self> for EcoString {
+impl Add for EcoString {
     type Output = Self;
 
-    fn add(self, rhs: &Self) -> Self::Output {
+    fn add(self, rhs: Self) -> Self::Output {
         self + rhs.as_str()
     }
 }
 
+impl AddAssign for EcoString {
+    fn add_assign(&mut self, rhs: EcoString) {
+        self.push_str(&rhs);
+    }
+}
+
 impl Add<&str> for EcoString {
     type Output = Self;