Fix duplicated steps in frontend's answer.

4052ad84 · Sander Mathijs van Veen · 5d769d17 · 4052ad84
Commit 4052ad84 authored May 24, 2012 by Sander Mathijs van Veen
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src/parser.py src/parser.py +3 -1

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--- a/src/parser.py
+++ b/src/parser.py
@@ -337,7 +337,9 @@ class Parser(BisonParser):
            print self.root_node

        if include_step:
-            return suggestion, self.root_node
+            # Make sure that the node is cloned, otherwise the next rewrite
+            # attempt will modify the root node (since it's mutable).
+            return suggestion, self.root_node.clone()

        return self.root_node