PREUN

/bin/sh

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

POSTIN

/bin/sh

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