Add test for non-ascii characters in docstrings

Closes gh-1179

IPython/core/tests/nonascii2.py

@@ -0,0 +1,4 b''
+# coding: iso-8859-5
+# (Unlikely to be the default encoding for most testers.)
+# БЖџрстуфхцчшщъыьэюя <- Cyrillic characters
+'Ўт№Ф'

IPython/core/tests/test_oinspect.py

@@ -288,3 +288,9 b' def test_pdef():'
     # See gh-1914
     def foo(): pass
     inspector.pdef(foo, 'foo')
+
+def test_pinfo_nonascii():
+    # See gh-1177
+    from . import nonascii2
+    ip.user_ns['nonascii2'] = nonascii2
+    ip._inspect('pinfo', 'nonascii2', detail_level=1)