Forwards the message to the current process.

It also checks the inbox for an input message matching:

{:mix_shell_input, :prompt, value}

If one does not exist, it will abort since there was no shell process inputs given. value must be a string.

Examples

The following will answer with "Meg" to the prompt "What's your name?":

# The response is sent before calling prompt/1 so that prompt/1 can read it
send(self(), {:mix_shell_input, :prompt, "Meg"})
Mix.shell().prompt("What's your name?")