[derekp7]

The biggest benefit of real ksh, to me, is that variables don't disappear in weird cases, such as:

    cat file |\
    while read stuff
       do other stuff; set variable
    done

In ksh93, variables set within the while loop stay around outside of it. Whereas bash will run the while loop in a forked sub process.

[sli]

That just sounds like (practically speaking, if not totally accurately) local scoping.