(range) makes lumo unresponsive

[aeosynth]

(range) is an infinite series, and executing it in the repl makes lumo unresponsive, and i can't kill lumo with ctrl-c. in node, i can kill while (true); with ctrl-c.

[mfikes]

This is generally a tough one to handle. If it helps in any way, here is how Planck checks for Ctrl-C during printing: planck-repl/planck@594df00