[Octave-patch-tracker] [patch #7847] Make gnuplot Qt terminal default for GUI/IDE via environment variable

[Ben Abbott]

Follow-up Comment #5, patch #7847 (project octave):

To avoid the gnuplot error, I suggest not defining GNUTERM=qt before checking
that gnuplot supports the qt terminal.  The gnuplot toolkit includes a private
function __gnuplot_has_terminal__.m which will detect if gnuplot includes
support for the qt terminal.


        .scripts/plot/private/__gnuplot_has_terminal__.m


To make use of this for the gui, we may need to make the function public.  In
any event, if it is in your path, all you need to do is


        has_qt = __gnuplot_has_terminal__ ("qt");


Ben


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