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Re: "$@" vs. nounset
From: |
Andreas Schwab |
Subject: |
Re: "$@" vs. nounset |
Date: |
Fri, 03 Jul 2009 22:16:41 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.95 (gnu/linux) |
Yang Zhang <yanghatespam@gmail.com> writes:
> As a result I'm forced to use "${@:-}" or something like that
The correct idiom is ${1+"$@"}, which also works around the old Bourne
shell bug that causes "$@" to expand to a single empty argument when
there are no positional arguments.
Andreas.
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Andreas Schwab, schwab@linux-m68k.org
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