I wrote a *rough* program to excute chunks of perl code, but was/am stuck on history storage/display. That was until i remembered that there already was such a thing, a perl shell; so i stopped working on it. I had totally forgotten about it until your post today. (Yes, i did the forgetting twice: originally the perl shell, and then my own program.)

My requirements are much looser, so i think above referenced crab shell should be fine for me.