Exported variable "could be local"

[jakub-bochenski]

#!/bin/bash

main() {
	ROOT="$(dirname -- "$(readlink -f -- "${BASH_SOURCE[0]}")")/.."
	export ROOT
}

while you can technically do that, I don't think it's useful to declare exported variables as local

[jansorg]

exporting a local variable would still make it available processes launched inside main and avoid side-effects to the variable outside of main. But I understand that it's often unexpected.
I don't want to change this in 5.x, but either fixing this for 6.x or adding a setting to control this for 6.x.
Would that work for you?