# test FUNCNEST functionality -- bash-4.2 FUNCNEST=100 foo() { (( f++ )) if (( f > 200 )); then return 7 fi foo } f=0 foo echo $? echo after: f = $f f=0 foo echo $? echo after: f = $f f=0 FUNCNEST=0 foo echo $? echo after FUNCNEST reset: f = $f f=0 unset FUNCNEST foo echo $? echo after FUNCNEST unset: f = $f FUNCNEST=20 f=$(( FUNCNEST - 2 )) foo echo $? echo after FUNCNEST assign: f = $f