This config variables dates back to r34065 from April 2008. Quoth Brion:
- Enable user search in Special:Newpages
- This is really a temporary hack around an index install bug on some Wikipedias.
- Kill it once fixed. */
$wgEnableNewpagesUserFilter is still set to false on some wikis:
'wgEnableNewpagesUserFilter' => array(
'default' => true,
'frwiki' => false,
'nlwiki' => false,
'svwiki' => false,
I can't find any bug report or other reason why this config variable even exists, or why it is set to false on these three wikis.
I think it is time to get rid of this.