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| From: | Eric Blake |
| Subject: | Re: difference between ${1+"$@"} and "$@"? |
| Date: | Thu, 26 Aug 2010 12:19:18 -0600 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100806 Fedora/3.1.2-1.fc13 Mnenhy/0.8.3 Thunderbird/3.1.2 |
On 08/26/2010 10:28 AM, Eric Blake wrote:
In some Bourne shells, "$@" with an empty set of positional parameters may expand to a single empty words, instead of no words at all. Hence the ${1+"$@"} workaround for ancient shells.Versions of zsh were the most recently afflicted by this, although it has been fixed there for several years now.
http://www.in-ulm.de/~mascheck/various/bourne_args/ -- Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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