Merging lists has made my brain hurt.

[Thorsten Kampe]

*  Thorsten Kampe
> *  Thorsten Kampe
>> * Alex Martelli
>>> Thorsten Kampe wrote:
[massive snip]
> I rewrote this, too:
> [...]
> With the same test as with union, it's three and two times as fast.
>
> Thanks!

While /replying/ to myself, I really didn't want to thank /myself/ but 
*Alex Martelli* of course. Just wanted to point this out.

Thorsten