--- a/mercurial/hg.py	Wed Nov 13 20:42:13 2019 +0100
+++ b/mercurial/hg.py	Sun Dec 01 18:46:10 2019 -0500
@@ -1345,7 +1345,7 @@
 
 
 def remoteui(src, opts):
-    b'build a remote ui from ui or repo and opts'
+    """build a remote ui from ui or repo and opts"""
     if util.safehasattr(src, b'baseui'):  # looks like a repository
         dst = src.baseui.copy()  # drop repo-specific config
         src = src.ui  # copy target options from repo