py3: convert function name to bytes in ui.configwith()

mercurial/ui.py

@@ -595,7 +595,7 b' class ui(object):'
             return convert(v)
         except (ValueError, error.ParseError):
             if desc is None:
-                desc = convert.__name__
+                desc = pycompat.sysbytes(convert.__name__)
             raise error.ConfigError(_("%s.%s is not a valid %s ('%s')")
                                     % (section, name, desc, v))
 

tests/test-doctest.py

@@ -68,7 +68,7 b" testmod('mercurial.store', py3=False) #"
 testmod('mercurial.subrepo')
 testmod('mercurial.templatefilters')
 testmod('mercurial.templater')
-testmod('mercurial.ui', py3=False)  # py3: __name__
+testmod('mercurial.ui')
 testmod('mercurial.url')
 testmod('mercurial.util', py3=False)  # py3: multiple bytes/unicode issues
 testmod('mercurial.util', testtarget='platform')