First datapoint is discarded on second call to plot

[Søren Hauberg]

Hi,
  Running a recent checkout from cvs I got a weird behaviour when I 
plot to curves. This code

  figure
  hold on
    f = sin(0:0.1:2*pi);
    plot(f)
    plot(1+f)
  hold off

produces to sine curves but the second one (the upper one) is missing 
the first data point.

Søren