mdale wrote:

I think there are a bit too many configuration variables here. I recommend we depreciate blacklisted extensions and only those listed in wgFileExtensions? Do we lose any functionality that way? Seems strange to have to change it in two places (ie add it to wgFileExtensions and remove it from wgFileBlacklist ) or set $wgStrictFileExtensions = false;

Fixed in r77956.

Having $wgFileBlacklist lets you set $wgStrictFileExtensions = false; to make it so that certain extensions are warned against but not blocked. I'm not sure how useful that behavior actually is, but I left it alone.