title: octave 3.8.1 can't stop execution in gui command window
body: <p>I'm running octave 3.8 with the gui in Ubuntu 14.04. I have an infinite loop somewhere in my program and it seems like the terminal doesn't respond to the typical keypresses to stop execution. (eg. Ctrl+C, Ctrl+Z) When I run programs in the terminal, I can just press Ctrl+C, but that doesn't seem to work here. What can I do to halt execution?</p>