23.3.3.23 I/O Ports in Guile ............................ -- Scheme Procedure: input-port Return GDB's input port as a Guile port object. -- Scheme Procedure: output-port Return GDB's output port as a Guile port object. -- Scheme Procedure: error-port Return GDB's error port as a Guile port object. -- Scheme Procedure: stdio-port? object Return '#t' if OBJECT is a GDB stdio port. Otherwise return '#f'.