https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274650

Benjamin Takacs <nimaje+...@bureaucracy.de> changed:

           What    |Removed                     |Added
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                 CC|                            |nimaje+...@bureaucracy.de

--- Comment #1 from Benjamin Takacs <nimaje+...@bureaucracy.de> ---
FreeBSDs sh doesn't do any option parsing after -c, this makes accidents due to
an unusual nammed command impossible and lead to the behaviour you observe.

sh tries to run the command ´--´ and uses ´echo $0´ providing ´arg´ as
argument.
As you don't have any command named ´--´ on your system sh reports it with its
name ´echo $0´.

That is POSIX incompatiple behaviour. I'm in favour of documenting this
incompatibility and closing this report as ´Works As Intended´

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