From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Fri, 21 Oct 2016 19:23:55 +0000 (+0100)
Subject: Oops, stop showbuildenv reading from stdin when run from a TTY.
X-Git-Url: https://diplodocus.org/git/nmh/commitdiff_plain/3f03b86d1f3dc643d2a88b816e889d291ddec5ea?ds=inline;hp=3f03b86d1f3dc643d2a88b816e889d291ddec5ea

Oops, stop showbuildenv reading from stdin when run from a TTY.

David spotted the problem I introduced with 8374c3c.  Alter offset to
process any arguments, falling back to stdin if none.
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