[Octave-bug-tracker] [bug #50295] Calling feval() from within the Qt GUI requires to press enter otherwise the prompt is busy

[Pantxo Diribarne]

Follow-up Comment #13, bug #50295 (project octave):

@jwe: about comment #5. Matlab deletes the current prompt, displays the string
and then redraws the prompt. After one click it looks like


>> foo = @(h, e) disp ('foo');
>> h = figure ();
>> set (h, 'buttondownfcn', foo);
foo
>>


Then if I click again it looks like 


>> foo = @(h, e) disp ('foo');
>> h = figure ();
>> set (h, 'buttondownfcn', foo);
foo
foo
>>


For completeness, with a "numbered" prompt it would look like this in Octave


octave:1> foo = @(h, e) disp ('foo');
octave:2> h = figure ();
octave:3> set (h, 'buttondownfcn', foo);
foo
foo
octave:4>


So from that point of view, the answer to your question "but how much output?"
is: delete the prompt, display output, redraw the prompt for each output. This
would also avoid the first output to be displayed after the prompt as it is
currently the case in octave:


octave:1> foo = @(h, e) disp ('foo');
octave:2> h = figure ();
octave:3> set (h, 'buttondownfcn', @foo);
error: @foo: no function and no method found
octave:3> set (h, 'buttondownfcn', foo);
octave:4> foo
foo



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