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home-manager: check whether a command is passed

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"set -u" treats unset variables as an error, and $1 is unbound when no
command is passed.
This commit is contained in:
Mario Rodas 2018-01-22 00:46:33 -05:00
parent 1b0a5eb54a
commit e94782ae03
1 changed files with 5 additions and 0 deletions
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home-manager/home-manager
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@ -337,6 +337,11 @@ done
# Get rid of the options. # Get rid of the options.
shift "$((OPTIND-1))" shift "$((OPTIND-1))"
if [ $# -eq 0 ]; then
doHelp >&2
exit 1
fi
cmd="$1" cmd="$1"
shift 1 shift 1