Keep it sync with OpenBSD: An optional argument cannot start with '-', even if permutation is disabled.
Keep it sync with OpenBSD:
An optional argument cannot start with '-', even if permutation is
disabled.

Obtained from: OpenBSD getopt_long.c v1.17

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase