t/op/chop.t See if chop works
t/op/chr.t See if chr works
t/op/closure.t See if closures work
+t/op/closure_test.pl Extra file for closure.t
t/op/cmp.t See if the various string and numeric compare work
t/op/concat2.t Tests too complex for concat.t
t/op/concat.t See if string concatenation works