diff -r fd60c2afb484 -r 49746e53ac92 mercurial/color.py
--- a/mercurial/color.py	Sat Nov 03 17:32:35 2018 +0900
+++ b/mercurial/color.py	Sat Nov 03 17:36:10 2018 +0900
@@ -529,7 +529,7 @@
                         attr = mapcolor(int(sattr), attr)
                 ui.flush()
                 _kernel32.SetConsoleTextAttribute(stdout, attr)
-                writefunc(m.group(2), **opts)
+                writefunc(m.group(2))
                 m = re.match(ansire, m.group(3))
         finally:
             # Explicitly reset original attributes