This is with gnuplot 5.0.5 or CVS of today, the attached script with the attached data results in correct plot, but makes gnuplot print out spurious error messages about the input script that look like something got messed up (repeated bits stitched together):
gnuplot < badplot.plot gnuplot> plot 'badplot.dat' with ls ^ line 0: unrecognized plot type gnuplot> et output ^ line 0: invalid command
It seems not to happen every time, but close. It vanishes when using
another terminal than x11 (e.g. dumb or png). I am not sure about other
graphical terminals. The wxt of the CVS build didn't run because of
C++ ABI mismatch ... sorry, my time is limited and I got a deadline
on a scientific paper.
I hope this is reasonably easy to identify for someone who knows their
way around the gnuplot codebase.
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