special case 0,0, which can attract spurious signal
commitbe53dec9b31a619a1f7426c7ea0bc3fa53585eeb
authorDouglas Bagnall <douglas@paradise.net.nz>
Sun, 30 May 2010 08:52:45 +0000 (30 20:52 +1200)
committerDouglas Bagnall <douglas@paradise.net.nz>
Sun, 30 May 2010 08:52:45 +0000 (30 20:52 +1200)
tree522434da407885918a0a3fc9be687a8dd4d15533
parent5645168f231f92c6378b2a8940852e523ab867d5
special case 0,0, which can attract spurious signal

I can't remember quite how it gets there, but it does
edges.c