Hi,
ActionView::Helpers::TextHelper#autolink does not handle certain mailto: links properly.
Assume the following html: <a href="mailto:david@loudthinking.com">Mail me</a>
When running this html through autolink, it should not alter the html. However it is transformed to: <a href="mailto:<a href="david@loudthinking.com">david@loudthinking.com</a>">Mail me</a>
I have created a ticket and added a patch: http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/1862-running-autolink-on-text-containing-a-mailto-link-breaks
