drush stopped in 10.9

My drush broke. Also, macports seems to have broken their package. The fastest way to install drush on Mac OS 10.9 is via the command line:

sudo php -d detect_unicode=0 /usr/lib/php/install-pear-nozlib.phar
sudo pear channel-discover pear.drush.org
sudo pear install drush/drush

The documentation is at http://pear.drush.org/.