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

[Dan Sebald]

Follow-up Comment #11, bug #44978 (project octave):

Low priority is fine, but if it is easy to fix, I'd prefer addressing it
rather than have a big long list of bugs that people have to revisit that are
no longer fresh in one's mind once 4.0 is released, which will be a while.

I've attached a simple variation on the gnuplot version script that uses
redirection to capture the output, which in most cases isn't even needed.  Is
using redirection of the screen output a problem for Windows?  __gp_eval__.m
is quite simple--evaluates a gnuplot command and if gnuplot doesn't understand
it, the status comes back '1' rather than '0'.


>> __gnuplot_eval__ ("set object 1 rectangle")
ans = 0
>> __gnuplot_eval__ ("francisbacon")
ans =  1


Rather than a function __gnuplot_has_feature__ (), maybe it is easier to just
have a host of small functions __gnuplot_has_object__ (), etc.

>> __gnuplot_has_object__ ()
ans =  1


(file #33865, file #33866)
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Additional Item Attachment:

File name: __gnuplot_eval__.m             Size:0 KB
File name: __gnuplot_has_object__.m       Size:0 KB


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