lib/mutant/mutator/node/send.rb in mutant-0.9.13 vs lib/mutant/mutator/node/send.rb in mutant-0.9.14

@@ -157,10 +157,10 @@
         def emit_selector_replacement
           SELECTOR_REPLACEMENTS.fetch(selector, EMPTY_ARRAY).each(&method(:emit_selector))
         end
 
         def emit_naked_receiver
-          emit(receiver) if receiver
+          emit(receiver) if receiver && !left_op_assignment?
         end
 
         def mutate_arguments
           emit_type(receiver, selector)
           remaining_children_with_index.each do |_node, index|