io/console has never worked on windows although we should bite the bullet and port the necessary code to implement it.

@tukanos If you omit -v do you still see this warning printing out? -v will enable $VERBOSE which is the guard which displays this warning or not (from Ruby command-line documentation):

-v Displays version and enables verbose mode

In this case, I think the behavior is correct in that you enabled verbose mode so we tell you that io/console is not getting loaded properly on windows (because we do not have an implementation of it -- we stub out some stuff).

I opened #3705 for adding the new feature. If this warning is occurring without -v then please reopen this issue. It is possible somehow readline library is enabling $VERBOSE errantly.

Hello @enebo,

without the -v it does not display the warning, but also it does not work properly as you mentioned (with the code missing). I had it there to see why it is not working as it should, there I saw it.

Thank you for opening a feature ticket. It is rather useful if you want to have a simple program with only a few user answers, you can do it simple with io/console.