I haven't seen -E (aka -o errtrace) before, but it looks like a useful addition to the standard-ish -euxo pipefail. Moreover, it's existence being required exp

I haven't seen -E (aka -o errtrace) before, but it looks like a useful addition to the standard-ish -euxo pipefail. Moreover, it's existence being required explains why my error handling, recently, wasn't working as expected.