tests/dollar-at-star5.sub

   1 #   This program is free software: you can redistribute it and/or modify
   2 #   it under the terms of the GNU General Public License as published by
   3 #   the Free Software Foundation, either version 3 of the License, or
   4 #   (at your option) any later version.
   5 #
   6 #   This program is distributed in the hope that it will be useful,
   7 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 #   GNU General Public License for more details.
  10 #
  11 #   You should have received a copy of the GNU General Public License
  12 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  13 #
  14 # testing various combinations of quoted and unquoted expansions of $@, and
  15 # whether they generate empty words after expansion
  16
  17 n() { echo "$#"; }
  18
  19 n "$@"
  20 n ${foo-"$@"}
  21 n "${foo-$@}"
  22
  23 n ""$@
  24 n """$@"
  25
  26 n $(true)$@
  27 n "$(true)$@"
  28 n "$(true)$@"
  29 n "$(true)""$@"
  30
  31 n $xxx$@
  32 n "$xxx$@"
  33 n $xxx"$@"
  34 n "$xxx""$@"
  35
  36 recho $xxx"$@"
  37 echo after 1
  38
  39 recho "$xxx$@"
  40 echo after 2
  41
  42 recho ${foo:-$xxx"$@"}
  43 echo after 3
  44
  45 # this is where these things start to differ
  46 echo same as 1
  47 recho "${foo:-$xxx"$@"}"
  48 echo same as 2
  49 recho "${foo:-$xxx$@}"
  50
  51 echo null fields
  52 recho ""$@
  53 recho """$@"
  54
  55 echo null fields in rhs
  56 echo null string with unquoted '$@'
  57 recho ${foo:-""$@}
  58 echo null string with quoted '$@'
  59 recho ${foo:-"""$@"}
  60
  61 echo assignment
  62 recho "${foo=$@}"
  63 echo variable
  64 recho "$foo"
  65 echo dollar-at
  66 recho "${@}"