Add test for unicode in logging.

IPython/core/logger.py

@@ -62,8 +62,8 b' class Logger(object):'
 
     logmode = property(_get_mode,_set_mode)
 
-    def logstart(self,logfname=None,loghead=None,logmode=None,
-                 log_output=False,timestamp=False,log_raw_input=False):
+    def logstart(self, logfname=None, loghead=None, logmode=None,
+                 log_output=False, timestamp=False, log_raw_input=False):
         """Generate a new log-file with a default header.
 
         Raises RuntimeError if the log has already been started"""

IPython/core/tests/test_logger.py

@@ -1,6 +1,9 b''
 """Test IPython.core.logger"""
 
+import os.path
+
 import nose.tools as nt
+from IPython.utils.tempdir import TemporaryDirectory
 
 _ip = get_ipython()
 
@@ -16,4 +19,13 b' def test_logstart_inaccessible_file():'
         _ip.run_cell("a=1")                 # Check it doesn't try to log this
     finally:
         _ip.logger.log_active = False  # If this fails, don't let later tests fail
-    
+
+def test_logstart_unicode():
+    with TemporaryDirectory() as tdir:
+        logfname = os.path.join(tdir, "test_unicode.log")
+        _ip.run_cell("'abc€'")
+        try:
+            _ip.magic("logstart -to %s" % logfname)
+            _ip.run_cell("'abc€'")
+        finally:
+            _ip.logger.logstop()