[Octave-bug-tracker] [bug #44978] gnuplot toolkit fails to recognize problems with older gnuplot versions

[Rik]

Follow-up Comment #4, bug #44978 (project octave):

A runtime check is definitely preferable.  It won't even be much of a penalty
because it would only need to be called once during initialization when the
pipes are set up.  Note that there are two m-files which are of interest in
scripts/plot/util/private.  These are __gnuplot_has_feature__ and
__gnuplot_version__.  Given that __gnuplot_has_feature__ really just checks
the version number to determine whether the feature exists, I think we would
be fine to check the version number explicitly and say that it is too old. 
What version is too old to work with?  Maybe < 4.2.5?  That is the first
version check that is used in __gnuplot_has_feature__.


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