hook(type => "getsetup", id => "recentchangesdiff",
call => \&getsetup);
hook(type => "pagetemplate", id => "recentchangesdiff",
call => \&pagetemplate);
hook(type => "getsetup", id => "recentchangesdiff",
call => \&getsetup);
hook(type => "pagetemplate", id => "recentchangesdiff",
call => \&pagetemplate);