1 2f() { 3 local - 4 set -a 5 case $- in 6 *a*) : ;; 7 *) echo In-function \$- bad 8 esac 9} 10case $- in 11*a*) echo Initial \$- bad 12esac 13f 14case $- in 15*a*) echo Final \$- bad 16esac 17