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HEAD
sh: Sync with FreeBSD:
[dragonfly.git]
/
tools
/
regression
/
bin
/
sh
/
expansion
/
set-u3.0
1
# $FreeBSD: head/tools/regression/bin/sh/expansion/set-u3.0 221463 2011-05-04 22:12:22Z jilles $
2
3
set -u
4
unset x
5
v=$( (eval ': $((x))') 2>&1 >/dev/null)
6
[ $? -ne 0 ] && [ -n "$v" ]