IEEE Std 1003.1-2008, Section 1.4, Utility Description Defaults says that when the options section is listed as "None", utility shall recognize "--" as a first argument to be discarded.
IEEE Std 1003.1-2008, Section 1.4, Utility Description Defaults says
that when the options section is listed as "None", utility shall
recognize "--" as a first argument to be discarded.

This implementation is largely based on OpenBSD implementation but
we do slightly differently:

a) We skip argv[0] as the first step;
b) We test whether the next argument is "--" and ignore it.

With this change one will get:

%printf
usage: printf format [arguments ...]
%printf -v
-v%printf -- -v
-v%
%printf --
usage: printf format [arguments ...]

Which matches the behavior observed on a Debian system but different
from the Illumos change.

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