Why do you think this is a bug in bash? You are telling the shell to export any modified variable, and you get what you asked for.
-- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."