wfDebugLog( 'caches',
'cluster: ' . get_class( $wgMemc ) .
- ', WAN: ' . $wgMainWANCache .
+ ', WAN: ' . ( $wgMainWANCache === CACHE_NONE ? 'CACHE_NONE' : $wgMainWANCache ) .
', stash: ' . $wgMainStash .
', message: ' . get_class( $messageMemc ) .
', parser: ' . get_class( $parserMemc ) .