Using arrows to edit the command

[rmja]

Writing something, then using left arrow to "move back the cursor", then edit something and hit "enter" should work.

[thejpster]

That would be a useful addition. You'd need to teach menu about ANSI escape sequences though.

[thejpster]

This also ties into a discussion around "cooked" and "raw" terminals. Because with a cooked terminal, the terminal does the line editing for you.