Python 2 bugfix. Handle string/unicode correctly in to_str.

1 files changed, 2 insertions, 2 deletions

diff --git a/prompt_toolkit/utils.py b/prompt_toolkit/utils.py
index 062fc7b1..46a13fcc 100644
--- a/prompt_toolkit/utils.py
+++ b/prompt_toolkit/utils.py
@@ -7,7 +7,7 @@ import threading
 import weakref
 
 from functools import partial
-from six import PY2
+from six import PY2, text_type
 from six.moves import range
 from wcwidth import wcwidth
 from .cache import memoized
@@ -304,7 +304,7 @@ def to_str(value):
     if callable(value):
         return to_str(value())
     else:
-        return str(value)
+        return text_type(value)
 
 
 def to_int(value):