magnetic net mode sometimes behaves unexpectedly

[KaiMartin]

Magnetic net mode in gschem from current git head (gEDA 1.7.2 (g76b184e) ) does not work as expected with certain corner cases. To reproduce:

1) load the attached file "magnetic_mode.sch"

2) start a net at the upper red label of the vertical net. (marked by the letter "A")

4) move the mouse up and right to the letter "B"

3) zoom way out, until the preview circle of the net mode locks to the horizontal net
(see the first screenshot)

4) left-mouse-click to mark a new net node
--> The new node does not appear, where the preview circle had been drawn. Instead, the vertical net is extended until it meets the horizontal net. (see the second screenshot)

---<)kaimartin(>---