tests/nameref10.sub

   1 # testing behavior of command substitution as one of expansions performed by
   2 # array subscripting; should behave the same directly as when done through
   3 # a nameref
   4
   5 x[0]=42
   6 zero=0
   7 f() { typeset -n foo="$1"; declare -p foo; echo "$foo"; }
   8
   9 f 'x[$zero]'
  10
  11 x[$(echo 0)]=4
  12 declare -p x
  13
  14 f 'x[$(echo 0)]'
  15
  16 unset -f f
  17 f()
  18 {
  19         typeset -n foo="$1";
  20
  21         echo "x[i=0$(echo comsub >&2)]"
  22         echo "${x[i=0$(echo comsub >&2)]}"
  23         echo "${!1}"
  24         echo "$foo"
  25 }
  26
  27 f 'x[i=0$(echo comsub >&2)]'
  28
  29 unset -f f
  30 unset x
  31
  32 # problems with unset and namerefs pointing to non-existent variables pointed
  33 # out after bash-4.3 released
  34
  35 typeset -n foo=somevariable
  36 foo=bar
  37 unset foo               # unsets somevariable
  38 typeset -p foo somevariable
  39 echo foo = $foo
  40
  41 typeset -A foo          # should create array variable named somevariable
  42 foo["jug"]="brown"
  43
  44 typeset -p foo somevariable
  45 typeset -A foo='([jug]="brown" )'
  46 typeset -p foo somevariable
  47
  48 unset foo
  49 typeset -p foo somevariable
  50 unset -n foo
  51 typeset -p foo somevariable
  52
  53 unset bar
  54 typeset -n foo=bar
  55 typeset -p foo bar
  56 unset foo
  57 typeset -p foo bar
  58 typeset -i foo
  59 foo=4+4
  60 typeset -p foo bar
  61 echo "$foo"
  62
  63 unset foo
  64 typeset -p foo bar