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set -- "abc" "def ghi" "jkl"
A=("$@")
IFS=':'
echo 'IFS=: ${var-$*}'
unset var; printf '%s\n' ${var-$*}
printf '%s\n' ${var-${A[*]}}
echo "----"
echo 'IFS=: ${var=$*}'
unset var; printf '%s\n' ${var=$*}
printf 'var=%s\n' "$var"
unset var; printf '%s\n' ${var=${A[*]}}
printf 'var=%s\n' "$var"
echo "----"
echo 'IFS=: ${var+$*}'
printf '%s\n' ${var+$*}
printf '%s\n' ${var+${A[*]}}
echo "----"
echo 'IFS= ${var-$*}'
IFS=''
unset var; printf '%s\n' ${var-$*}
unset var; printf '%s\n' ${var-${A[*]}}
echo "----"
echo 'IFS= ${var=$*}'
unset var
printf '%s\n' ${var=$*}
printf 'var=%s\n' "$var"
unset var
printf '%s\n' ${var=${A[*]}}
printf 'var=%s\n' "$var"
echo "----"
echo 'IFS= ${var+$*}'
printf '%s\n' ${var+$*}
printf '%s\n' ${var+${A[*]}}
|
