Amend doc

whitequark · Jun 7, 2020 · ad3f6a4 · ad3f6a4
1 parent a1e105d
commit ad3f6a4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/parser/source/tree_rewriter.rb b/lib/parser/source/tree_rewriter.rb
@@ -129,6 +129,8 @@ def empty?
       ##
       # Merges the updates of argument with the receiver.
       # Policies of the receiver are used.
+      # This action is atomic in that it won't change the receiver
+      # unless it succeeds.
       #
       # @param [Rewriter] with
       # @return [Rewriter] self