GHCi completion on windows?

[Claus Reinke]

while undocumented (?), there seems to be a lot of code
in GHCi regarding commandline completion. but in a
default build, i don't get any benefit from that, as editline
doesn't seem available for mingw (?).

is there a way to get this working on windows? i'm growing
rather tired of typing VeryLongCamelCaseLanguageExtensions
in GHCi sessions, and this would help!-)

if there really is no working editline for windows, is there a
way of pluggin in Malcolm's System.Console.SimpleLineEditor 
(currently in package readline), extended to handle completion?
the completion code itself is in haskell, anyway, just that there's
no editline/readline to call this code on windows, right?

claus