Ben Peart <benpeart@xxxxxxxxxxxxx> writes:
> +if test -n "$GIT_FSMONITOR_TEST"
> +then
> + if test -n "$GIT_TEST_FSMONITOR"
> + then
> + echo "warning: the GIT_FSMONITOR_TEST variable has been renamed to GIT_TEST_FSMONITOR"
> + else
> + echo "error: the GIT_FSMONITOR_TEST variable has been renamed to GIT_TEST_FSMONITOR"
> + exit 1
> + fi
> +fi
I would have expected that, because we are now doing multiple pairs
of variables in a single series, we would add a helper function that
can be called like so:
check_var_migration GIT_FSMONITOR_TEST GIT_TEST_FSMONITOR
in the earliest step. Perhaps something like this.
check_var_migration () {
old_name=$1 new_name=$2
eval "old_isset=\${${old_name}:+isset}"
eval "new_isset=\${${new_name}:+isset}"
case "$old_isset,$new_isset" in
isset,)
echo >&2 "error: $old_name is now $new_name"
exit 1 ;;
isset,isset)
# enable this, once $old_name no longer is valid anywhere
# echo >&2 "warning: $old_name is now $new_name"
# echo >&2 "hint: remove $old_name"
;;
esac
}
