Running 6.8.1 on Windows XP, typing 'main' while ":r" is still processing causes the 'm' in 'main' to morph to a 'g'.

> :r
[1 of 2] Compiling Language.QidlTypeLibrary.Parser ( Language/QidlTypeLibrary/Parser.hs, interpreted )
Ok, modules loaded: Main, Language.QidlTypeLibrary.Parser.
> main

<interactive>:1:0: Not in scope: `gain'

Thanks,
Greg