PREUN

/bin/sh

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

POSTIN

/bin/sh

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