t/op/study.t See if study works
t/op/studytied.t See if study works with tied scalars
t/op/sub_lval.t See if lvalue subroutines work
+t/op/substr.t See if substr works
+t/op/substr_thr.t See if substr works in another thread
t/op/sub.t See if subroutines work
t/op/svleak.t See if stuff leaks SVs
t/op/switch.t See if switches (given/when) work
t/re/re_tests Regular expressions for regexp.t
t/re/rxcode.t See if /(?{ code })/ works
t/re/subst_amp.t See if $&-related substitution works
-t/re/substr.t See if substr works
-t/re/substr_thr.t See if substr works in another thread
t/re/subst.t See if substitution works
t/re/substT.t See if substitution works with -T
t/re/subst_wamp.t See if substitution works with $& present