tests/nquote2.sub

   1 t() {
   2     printf '%s  |  %s\n' "$1" "$2"
   3   }
   4   v="'"       # v <- '
   5
   6   #--
   7   t "${v/$'\''/$'\''}"        "'"
   8   t  ${v/$'\''/$'\''}         "'"
   9   t "${v/$'\''/x}"            "x"
  10   t  ${v/$'\''/x}             "x"
  11   t "${v/x/$'\''}"            "'"
  12   t  ${v/x/$'\''}             "'"
  13   t "${v/x/$'\x5c\''}"        "'"
  14   t  ${v/x/$'\x5c\''}         "'"
  15   t "${v/\'/\'}"              "'"
  16   t  ${v/\'/\'}               "'"
  17   t  ${v/\'/x}               "x"
  18
  19 echo "'"
  20 echo "$'\''"
  21
  22 echo $'\''
  23
  24 echo $'\'abcd\''
  25 echo "$'\'abcd\''"
  26
  27 v=1
  28 echo ${v/1/\'}
  29 echo ${v/\'/2}