1 files changed, 9 insertions, 1 deletions
diff --git a/src/syntax/span.rs b/src/syntax/span.rs
index 7a051d99..8973ef89 100644
--- a/src/syntax/span.rs
+++ b/src/syntax/span.rs
@@ -116,7 +116,7 @@ impl Debug for Span {
 }
 
 /// A value with the span it corresponds to in the source code.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, Serialize)]
+#[derive(Copy, Clone, Eq, PartialEq, Hash, Serialize)]
 pub struct Spanned<T> {
     /// The value.
     pub v: T,
@@ -147,6 +147,14 @@ impl<T> Spanned<T> {
     }
 }
 
+impl<T: Debug> Debug for Spanned<T> {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        self.span.fmt(f)?;
+        f.write_str(": ")?;
+        self.v.fmt(f)
+    }
+}
+
 /// A vector of spanned things.
 pub type SpanVec<T> = Vec<Spanned<T>>;