make-concatenated-stream &rest input-streams → concatenated-stream

input-stream — an input stream.

concatenated-stream — a concatenated stream.

Returns a concatenated stream that has the indicated input-streams initially associated with it.

(read (make-concatenated-stream 
        (make-string-input-stream "1") 
        (make-string-input-stream "2"))) → 12

Should signal type-error if any argument is not an input stream.

concatenated-stream-streams