Use stable sort when sorting tokens

rubocop · Sep 18, 2020 · a1035a1 · a1035a1
1 parent 7e745be
commit a1035a1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/rubocop/ast/processed_source.rb b/lib/rubocop/ast/processed_source.rb
@@ -269,7 +269,8 @@ def last_token_index(range_or_node)
       # is passed as a method argument. In this case tokens are interleaved by
       # heredoc contents' tokens.
       def sorted_tokens
-        @sorted_tokens ||= tokens.sort_by(&:begin_pos)
+        # Use stable sort.
+        @sorted_tokens ||= tokens.sort_by.with_index { |token, i| [token.begin_pos, i] }
       end
 
       def source_range(range_or_node)