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[Octave-bug-tracker] [bug #53682] Can't study blank figure while program

From: Mike Miller
Subject: [Octave-bug-tracker] [bug #53682] Can't study blank figure while program is waiting for us (kbhit) to study the figure and hit a key.
Date: Tue, 17 Apr 2018 18:28:35 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0

Follow-up Comment #5, bug #53682 (project octave):

The part of this bug that I called #1 is covered by bug #37795, so any
improvements to the fltk toolkit to make it responsive when octave is busy or
when readline is otherwise disabled can be discussed on that bug report. The
workaround for that part of this bug is to use the qt or gnuplot toolkit, then
figure redraws are not blocked by octave waiting for user input from kbhit
(gnuplot is a separate process, qt uses a separate thread).

The part of this bug that I called #2 doesn't seem to be covered by any
existing bug reports. There were previous reports about being unable to print
a figure to a file when it was minimized or on a different virtual desktop.
But again, I think this only affects the fltk toolkit, which is blocked from
redrawing by the kbhit function.

So using the fltk toolkit from a script that is blocking readline from running
on a non-compositing window manager is the worst possible combination of
effects to produce a not-redrawn non-responsive figure window.


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