diff -r 32a07b8a9f77 -r 201b44c8875c mercurial/chgserver.py
--- a/mercurial/chgserver.py	Sun Dec 18 16:20:04 2016 +0900
+++ b/mercurial/chgserver.py	Sun Oct 23 17:47:00 2016 +0900
@@ -271,9 +271,6 @@
         if ':' in source or source == '--config':
             # path:line or command line
             continue
-        if source == 'none':
-            # ui.configsource returns 'none' by default
-            source = ''
         newui.setconfig(section, name, value, source)
 
     # load wd and repo config, copied from dispatch.py