Complete reworking of the REPL

which is good in itself, but not what I was meant to be working on.

unit-tests/varargs.sh

@@ -1,10 +1,7 @@
 #!/bin/bash
 
-expected='(lambda l l)(1 2 3 4 5 6 7 8 9 10)'
-actual=`target/psse 2>/dev/null <<EOF
-(set! list (lambda l l))
-(list 1 2 3 4 5 6 7 8 9 10)
-EOF`
+expected='(1 2 3 4 5 6 7 8 9 10)'
+actual=`echo "(set! list (lambda l l))(list 1 2 3 4 5 6 7 8 9 10)" |target/psse | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then