Keyboard shortcut for Rescan MIDI about midiapps

[krevis]

Thanks for the patch, it looks fine to me. You could also just use Audio MIDI Setup, which already has command-R to "Refresh MIDI Setup", which I believe is the same thing.

I'm curious, though, why do you need to do this so frequently? What part of your setup doesn't update automatically?

[crenz]

It's more a convenience thing – I often skip opening Audio MIDI setup and use MIDI Monitor directly to verify proper MIDI connectivity. And with some USB devices, it can be helpful to do a manual rescan.

Thanks for accepting the pull request!

[krevis]

Which USB devices, in particular, have you found that need this? Just asking out of curiosity, since I don't recall using any USB-MIDI interfaces that didn't automatically update when plugged or unplugged.