Mainly unit tests. 39/45 currently pass; the failures are all in bignum arithmetic and in deallocation.

unit-tests/list-test,sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+result=0
+
 expected="(0 1 2 3 4 5 6 7 8 9 a b c d e f)"
 
 actual=`echo "(list 0 1 2 3 4 5 6 7 8 9 'a 'b 'c 'd 'e 'f)" | target/psse | tail -1`
@@ -9,7 +11,7 @@ then
     echo "OK"
 else
     echo "Fail: expected '$expected', got '$actual'"
-    exit 1
+    result=1
 fi
 
 expected="(0 1 2 3 4)"
@@ -21,7 +23,7 @@ then
     echo "OK"
 else
     echo "Fail: expected '$expected', got '$actual'"
-    exit 1
+    result=1
 fi
 
 expected="(0 1 2 3 4 5 6 7)"
@@ -34,5 +36,7 @@ then
     exit 0
 else
     echo "Fail: expected '$expected', got '$actual'"
-    exit 1
+    result=1
 fi
+
+exit ${result}