Currently, if no input is piped into the program, Retina waits for console input before running. This is fairly annoying, because you don't want any input for fixed-output programs. The default behaviour should change such that if no input is available, empty input is assumed. The current behaviour could be recovered with a command-line option.
Fixed in next release. I haven't added an option to recover the old behaviour yet. I'm not convinced it's actually useful, and I can always add it if someone actually needs it.
Currently, if no input is piped into the program, Retina waits for console input before running. This is fairly annoying, because you don't want any input for fixed-output programs. The default behaviour should change such that if no input is available, empty input is assumed. The current behaviour could be recovered with a command-line option.