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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 Schwab, schwab@linux-m68k.org
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