[Bug 4243] hush parsing of ${1+"$@"}

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=4243

--- Comment #2 from Mike Frysinger <vapier at gentoo.org> 2012-10-21 17:59:18 UTC ---
(In reply to comment #1)

i think it breaks down into two parts.  there's:
  ${1+word}
which, if $1 is set, substitutes the words

then there's "$@" which expands the array of words.

so it should be:
$ set -- '1 2' 3 4
$ printf '%s\n' "$@"
1 2
3
4

you could e-mail austin-group-l at opengroup.org for an interpretation ... i'm
sure someone will be able to get the details for you

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