# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1498394336 -7200
# Node ID 1dc2ffe0123b53271a4ce3858f1c15add011a2cf
# Parent  1aa05203f7f66e8566ce6e92cc3451a9b7ce15c3
config: use '_config' within 'configbool'

This will prevent bugs from using None as the sentinel value (eg:
'ui.interactive')

diff -r 1aa05203f7f6 -r 1dc2ffe0123b mercurial/ui.py
--- a/mercurial/ui.py	Sun Jun 25 14:34:34 2017 +0200
+++ b/mercurial/ui.py	Sun Jun 25 14:38:56 2017 +0200
@@ -540,8 +540,10 @@
         ConfigError: foo.invalid is not a boolean ('somevalue')
         """
 
-        v = self.config(section, name, default, untrusted=untrusted)
+        v = self._config(section, name, default, untrusted=untrusted)
         if v is None:
+            return v
+        if v is _unset:
             if default is _unset:
                 return False
             return default