Last modified: 2013-07-30 19:05:20 UTC
Split from bug 51308 comment 2. Special:prefixindex doesn't allow searching for titles by a prefix that is an invalid title (but still a valid prefix). The primary problem area involves "relative directory" syntax. For example (not including quotes): * '.' * '..' * 'Anything ending with/.' * 'Anything ending with/..' However all 4 of these can be valid prefixes of a title. See SpecialAllpages::getNamespaceKeyAndText and Title::secureAndSplit. I guess we shouldn't assume the prefix forms an actually valid title.
*** This bug has been marked as a duplicate of bug 10473 ***