Separate macro replacement from macro parsing

src/intern.rs

@@ -4,9 +4,15 @@ use std::sync::RwLock;
 use lasso::{Rodeo, Spur};
 use lazy_static::lazy_static;
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
 pub struct InternedStr(pub Spur);
 
+impl fmt::Debug for InternedStr {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", self)
+    }
+}
+
 lazy_static! {
     pub static ref STRINGS: RwLock<Rodeo<Spur>> = RwLock::new(Rodeo::default());
     static ref EMPTY_STRING: InternedStr = InternedStr::get_or_intern("");