[Gretl-users] Lines & Points plotting problem

I am having troubling putting both lines and points in plot The code below creates lines & points like I want in some cases But in a few cases I get all lines -- see the last gnuplot example Is this a GRETL bug or something about gnuplot and --with-lines= I don't understand ## Basic plotting using simple time series set nulldata 20 setobs 1 1980 --time-series series x1= index series x2 = 1 x2 = x2(-1) + 0.25 series y1 = 0 series y2 = sin(x1) # Line & points OK gnuplot y1 y2 x1 --with-lines=y2 --output=display gnuplot y1 y2 --time-series --with-lines=y1 --output=display gnuplot y2 y1 --time-series --with-lines=y2 --output=display # Does not show y1 as points if --with-lines=y2 and y2 is second element gnuplot y1 y2 --time-series --with-lines=y2 --output=display I am using Gretl 1.9.9 June 2012 build I have a few other cases using matrix= as well