[IPython-dev] Chainsaw: SIGUSR1 doesn't exist on Windows

[Albert Strasheim]

Hello all

I've started cutting myself on the Chainsaw branch of IPython. Vroom-vroom.

The first issue I've run into is with starting ipengine. InteractiveShell in
core\shell.py is trying to use the USR1 signal for something. This signal
doesn't exist on Windows.

I haven't looked at the code very thoroughly, so I don't have a proposal for
fixing this issue.

Cheers,

Albert