[Octave-bug-tracker] [bug #60509] First initialization of graphics subsystem switches graphics_toolkit when octave-cli used

[John W. Eaton]

Follow-up Comment #8, bug #60509 (project octave):

Who wrote this mess?  Probably me!  And probably there is a much simpler way
for this to be managed.

Yes, I think we want the initial default the first of "qt", "fltk", or
"gnuplot" that is available.  But that should just be initialized early on,
before any call to graphics_toolkit can happen.  After that, anything set by
graphics_toolkit should persist.

With octave-cli, "qt" will not be available, so then it is just "fltk" or
"gnuplot".

Maybe we could do away with the idea of available_graphics_toolkits?  Do we
need to maintain that list?  I forget why I thought it was needed.  What is it
used for now? Could we just fail if the requested toolkit is not found?



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