[Octave-bug-tracker] [bug #53217] Can't close window popping up after "gray" command while pager is active

[Dan Sebald]

Follow-up Comment #20, bug #53217 (project octave):

Well, "fixed" hardly seems right.  One of the original issues was the
appearance of error messages.  Try the following, pause for five seconds and
while paused click the close button of the plot a few times:


>> graphics_toolkit qt
>> plot(1:50)
>> pause(5)
>> warning: base_graphics_object::get_properties: invalid graphics object
error: unexpected exception while parsing input
>> warning: base_graphics_object::get_properties: invalid graphics object
error: unexpected exception while parsing input


The pause is meant to simulate the user running a long process where the core
is busy.  Somehow suppressing the error messages would be an OK solution.  The
bigger issue is the callback design.

https://savannah.gnu.org/bugs/index.php#comment7

BTW, most commands have a way-back compatibility of allowing input variables
without the parentheses.  What is at issue with the following:


>> pause 5
error: invalid conversion from string to real scalar


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