tests/dollar-at-star7.sub

   1 IFS=''                  # testing with only empty IFS
   2
   3 set -- this is a test
   4
   5 printf '|%s|\n' ${1+"$@"}
   6 echo
   7 printf '|%s|\n' "${1+$@}"
   8 echo
   9 printf '|%s|\n' "$@"
  10 echo
  11
  12 printf '|%s|\n' ${1-"$@"}
  13 printf '|%s|\n' "${1-$@}"
  14
  15 echo
  16 : ${foo:="$@"}
  17 printf '|%s|\n' "$foo"
  18
  19 unset foo
  20 : "${foo:=$@}"
  21 printf '|%s|\n' "$foo"
  22
  23 unset foo
  24 printf '|%s|\n' ${foo-"$@"}
  25 printf '|%s|\n' "${foo-$@}"