I've recently tried dfwiki and found that "mailto:" links do not appear to work -- the external-link code checks for the presence of "://", which "mailto:" links do not use.
Here's a one-line patch to remedy the situation (I'm not much of a PHP programmer but it works for me). I haven't found a better place to post this.
Anselm
Thank you Anslem
we'll merge it in the main distrib..
Ludo
we'll merge it in the main distrib..
Ludo