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Re: difference between ${1+"$@"} and "$@"?
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From: |
Greg Wooledge |
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Subject: |
Re: difference between ${1+"$@"} and "$@"? |
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Date: |
Thu, 26 Aug 2010 12:20:21 -0400 |
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User-agent: |
Mutt/1.4.2.3i |
On Thu, Aug 26, 2010 at 11:13:21AM -0500, E R wrote:
> With bash is there any difference between the expressions ${1+"$@"} and "$@"?
No.
> Is there any difference with other sh-like shells?
In some Bourne shells, "$@" 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.