tools/regression/bin/sh/expansion/plus-minus6.0

   1 # $FreeBSD: src/tools/regression/bin/sh/expansion/plus-minus6.0,v 1.1 2010/10/29 13:42:18 jilles Exp $
   2
   3 failures=0
   4 unset LC_ALL
   5 export LC_CTYPE=en_US.ISO8859-1
   6 nl='
   7 '
   8 i=1
   9 set -f
  10 while [ "$i" -le 255 ]; do
  11         # A different byte still in the range 1..255.
  12         i2=$((i^2+(i==2)))
  13         # Add a character to work around command substitution's removal of
  14         # final newlines, then remove it again.
  15         c=$(printf \\"$(printf %o@ "$i")")
  16         c=${c%@}
  17         c2=$(printf \\"$(printf %o@ "$i2")")
  18         c2=${c2%@}
  19         case $c in
  20                 [\'$nl'$}();&|\"`']) c=M
  21         esac
  22         case $c2 in
  23                 [\'$nl'$}();&|\"`']) c2=N
  24         esac
  25         IFS=$c
  26         command eval "set -- \${\$+$c2$c$c2$c$c2}"
  27         if [ "$#" -ne 3 ] || [ "$1" != "$c2" ] || [ "$2" != "$c2" ] ||
  28             [ "$3" != "$c2" ]; then
  29                 echo "Bad results for separator $i (word $i2)" >&2
  30                 : $((failures += 1))
  31         fi
  32         i=$((i+1))
  33 done
  34 exit $((failures > 0))