Read lines from the console and pass non-null ones to processline.
Read lines from the console and pass non-null ones to processline. Continue until processline returns false. The command-line arguments are passed to the setup function. Calls setup before entering the loop and prompt each time input is about to be read.
Define the prompt (default: "> ").
Carry out setup processing for the REPL.
Carry out setup processing for the REPL. Default: do nothing.
General support for applications that implement read-eval-print loops (REPLs).