Some users on social sites still enter their email addresses on comment fields. I'm trying to prevent spammers from harvesting them by replacing the @ character with a graphic. That's really easy to do using the smiley module.
However, I use the text filter option "Convert URLs into links" which turns the email into a mailto link. The smiley filter now breaks the HTML.
I would like to not turn emails into links but keep turning urls into links. How could I do that?