All unit tests passing! This is slightly a fix because there is a bug with

the character read after reading a number not being correctly pushed back
onto the input stream, but...

unit-tests/simple-list.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected="(1 2 3)"
-actual=`echo '(1 2 3)' | target/psse 2> /dev/null`
+actual=`echo '(1 2 3 )' | target/psse 2> /dev/null`
 
 if [ "${expected}" = "${actual}" ]
 then