--- a/tests/test-patch-offset.t	Mon Feb 18 00:27:25 2019 +0900
+++ b/tests/test-patch-offset.t	Mon Feb 18 00:27:25 2019 +0900
@@ -9,7 +9,7 @@
   > for pattern in patterns:
   >     count = int(pattern[0:-1])
   >     char = pattern[-1].encode('utf8') + b'\n'
-  >     fp.write(char*count)
+  >     fp.write(char * count)
   > fp.close()
   > EOF