[Octave-bug-tracker] [bug #52940] Regression with "PaperPosition" and printing

[Dan Sebald]

Follow-up Comment #18, bug #52940 (project octave):

That "drawnow()" is actually currently more critical than just what I had
described.  Before and after the patch, if I remove the drawnow() and turn
visibility off, I get:


octave:1> graphics_toolkit qt
octave:2> tst_paperpos
octave:3> set(1,'visible','off')
octave:4> print tst.pdf
fatal: caught signal Segmentation fault -- stopping myself...
Segmentation fault


Obviously the issue is that without the visible figure there is no OpenGL
redraw and something isn't correct for the gl2ps context.  I suspect it is
because Octave is using the Figure position in some way.  Let's try to get
away from that and obviate the above seg-fault.  Regardless of changing the
viewport or not, there shouldn't be a crash bug in the code that is dependent
upon something set in a script file.

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