- repl #!optional EVALUATORprocedure
Start a new read-eval-print loop. Sets the reset-handler so that any invocation of reset restarts the read-eval-print loop. Also changes the current exception-handler to display a message, write any arguments to the value of (current-error-port) and reset.
If EVALUATOR is given, it should be a procedure of one argument that is used in place of eval to evaluate each entered expression.
You can use quit to terminate the current read-eval-print loop.