Format: (y-or-n-p) (y-or-n-p <string> ) (yes-or-no-p) (yes-or-no-p <string> )
Required arguments: none
Optional arguments: 1
Optional argument must evaluate to a string
The user is prompted with the string text (if provided). y-or-n-p returns t if y or Y is entered or nil if n or N is entered, but reprompts the user if given any other response. yes-or-no-p behaves similarly but requires a yes or no respsonse (upper or lower case mixed is ok).
> (y-or-n-p "Well? ") Well? (Y or N) ok Well? (Y or N) no Well? (Y or N) y T > (yes-or-no-p "Answer in full:") Answer in full: (Yes or No) y Answer in full: (Yes or No) n Answer in full: (Yes or No) nO NIL
© Colin Allen & Maneesh Dhagat