When one adds <code>set -e</code> in their environment/script, the code line <code>let _left=40-$_done</code> errors out, when <code>40-$_done</code> equals 0. In my testing <code>let _left=(40-$_done) || printf 0</code> works perfectly fine
When one adds
set -ein their environment/script, the code linelet _left=40-$_doneerrors out, when40-$_doneequals 0.In my testing
let _left=(40-$_done) || printf 0works perfectly fine