hold not functioning properly in 3.0.3

[Jonathan Stickel]

I just discovered that "hold on" is not working properly in Octave 
3.0.3.  To reproduce, do

octave:1> figure(1)
octave:2> hold on
octave:3> plot(1:10,1:10)
octave:4> plot(1:10,(1:10).^2)

Only the second line plot is shown.  Inserting the hold command in 
between the plotting commands does work, but the above should work also.


My platform is Mac OS X, with gnuplot and x11 terminal for plotting.

Regards,
Jonathan