Why is it that I can't repeat lines and edit them in IRB? If I press my
cursor up key, normally, that repeats the line I just entered. Then, I
can backspace and modify any part of that line I want before executing
it. But, it's dying on me. After I backspace a few characters, the
cursor goes nuts, and, I've lost my instruction string. Has anyone else
seen this behavior?

Thanks,
Peter
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