Partial workaround for problems running nush in the Xcode console.
Partial workaround for problems running nush in the Xcode console.

It is possible to run nush interactively in the Xcode console,
but without this modification, all input characters are printed
twice. Also, even with this change, command history is broken.

timburks/nu,hodgeswt/nu,timburks/nu,nulang/nu,hodgeswt/nu,jqk6/nu,spotify/nu,jqk6/nu,jqk6/nu,heiko-henrich/nutor,gcbeyond/nu,hodgeswt/nu,gcbeyond/nu,gcbeyond/nu,heiko-henrich/nutor,heiko-henrich/nutor,heiko-henrich/nutor,spotify/nu,jqk6/nu,gcbeyond/nu,hodgeswt/nu,nulang/nu,spotify/nu,spotify/nu,timburks/nu,nulang/nu