issue #477: _update_linecache() must append newlines.

mitogen/core.py

@@ -1117,7 +1117,7 @@ class Importer(object):
             linecache.cache[path] = (
                 len(data),
                 0.0,
-                data.splitlines(),
+                [line+'\n' for line in data.splitlines()],
                 path,
             )
 

tests/importer_test.py

@@ -212,5 +212,10 @@ class ImporterBlacklistTest(testlib.TestCase):
         self.assertTrue(mitogen.core.is_blacklisted_import(importer, 'builtins'))
 
 
+class Python24LineCacheTest(testlib.TestCase):
+    # TODO: mitogen.core.Importer._update_linecache()
+    pass
+
+
 if __name__ == '__main__':
     unittest2.main()