On Tue, Jul 6, 2010 at 8:54 PM, Duncan Coutts <duncan.coutts@googlemail.com> wrote:

The one we discussed more recently is similar to what you are proposing
now. I think the difference was that in what I suggested, the middle
component of the tuple went to the end of the text, i.e. it was a prefix
of the last component.

Right. I don't suppose there's a huge difference between the two, though the simpler formulation has the added advantage of working "out of the box" with those doughty and reliable warhorses of introductory FP, fst and snd.