PREUN

/bin/sh

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

POSTIN

/bin/sh

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