[PD] sorting a 2 dimension list

[Krzysztof Czaja]

hi Thomas,

Thomas Ouellet Fredericks wrote:
...
> How can I sort a multidimensional list by it's first element?
> I know of a way using [coll] (cyclone) but from my experience, [coll] is 
> unstable.

'sort' is broken, indeed, sorry.  I have an obvious fix, but need to
check for compatibility first.

Apart from the sort bug, are there any other coll troubles?  Please,
please: just do report such things!

Krzysztof