PREUN

/bin/sh

if [[ "$1" = "0" ]]; then
  perl -ni -e "/^DICT\s*ms\s*MY\s*ms_MY$/ or print" /usr/share/dict/ooo/dictionary.lst
fi

POSTIN

/bin/sh

if [[ ! -f "/usr/share/dict/ooo/dictionary.lst" ]] ||       ! grep -q "^DICT[ \t]*ms[ \t]*MY[ \t]*ms_MY" /usr/share/dict/ooo/dictionary.lst
then
  echo "DICT ms MY ms_MY" >> /usr/share/dict/ooo/dictionary.lst
fi