Mark Walters writes: > This patch replaces the use of goto-address-fontify-region with our > own code doing roughly the same thing. The advantage is that we > control how the resulting buttons work. In particular RET on link > activates the button (in my case opening it in an external browser) > and TAB stops at these links. The attached message behaves a bit strangely under tabbing; it seems to get stuck in the first signature block.