PREUN

/bin/sh

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

POSTIN

/bin/sh

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