[issue13886] readline-related test_builtin failure

[Roundup Robot]

Roundup Robot added the comment:

New changeset 5c7e884b205a by Nadeem Vawda in branch '3.3':
Back out fix for issue #13886; it introduced a new bug in interactive readline use.
http://hg.python.org/cpython/rev/5c7e884b205a

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