tests/ifs.tests

   1 OIFS="$IFS"
   2 IFS=":$IFS"
   3 eval foo="a:b:c"
   4 IFS="$OIFS"
   5 echo $foo
   6
   7 OIFS=$IFS
   8 IFS=":$IFS"
   9 foo=$(echo a:b:c)
  10 IFS=$OIFS
  11
  12 for i in $foo
  13 do
  14         echo $i
  15 done
  16
  17 OIFS=$IFS
  18 IFS=":$IFS"
  19 foo=`echo a:b:c`
  20 IFS=$OIFS
  21
  22 for i in $foo
  23 do
  24         echo $i
  25 done
  26
  27 DEFIFS=$' \t\n'
  28
  29 # local copy of IFS that shadows global version
  30 function f
  31 {
  32         typeset IFS=:
  33
  34         echo $1
  35 }
  36
  37 function ff
  38 {
  39         echo $1
  40 }
  41
  42 f a:b:c:d:e
  43 x=a:b:c:d:e
  44 echo $x
  45
  46 IFS=: ff a:b:c:d:e
  47 echo $x
  48
  49 # doesn't get word split
  50 IFS=$DEFIFS
  51 # variable assignment doesn't use new value for word splitting
  52 IFS=: echo $x
  53 # but does this time because of the eval
  54 IFS=: eval echo \$x
  55
  56 # in posix mode, assignments preceding special builtins and functions are global
  57 set -o posix
  58 IFS=: export x
  59 echo $x
  60
  61 IFS="$DEFIFS"