implement Marker::abandon

crates/pawarser/src/parser/marker.rs

@@ -59,6 +59,18 @@ impl Marker {
         mut self,
         p: &mut Parser<SyntaxKind, SyntaxErr>,
     ) {
+        self.bomb.defuse();
+
+        // clean up empty tombstone event from marker
+        if self.pos == p.events.len() - 1 {
+            match p.events.pop() {
+                Some(Event::Start {
+                    kind: NodeKind::Tombstone,
+                    forward_parent: None,
+                }) => (),
+                _ => unreachable!(),
+            }
+        }
     }
 }