The /bin/sh stuff made me think of an interview question I had for engineers,
that a surprisingly few could pass:

"Tell me about something you wrote that was entirely you, the docs, the
tests, the source, the installer, everything.  It doesn't have to be a
big thing, but it has to have been successfully used by at least 10
people who had no contact with you (other than to say thanks)."

Most people fail this.  I think the people who pass might look
positively on the v7 sh stuff.  But who knows?