Comment 47 for bug 411358

(In reply to Jonathan from comment #41)
 As there are currently no known URI Schemes
> which use any non alphanumeric characters (see
> http://en.wikipedia.org/wiki/URI_scheme )

There is (svn+ssh://...) but its easy to miss on the page because its hidden in the (ssh://...) description.

This is where I see the problem.

That said, I would find invalidating this pattern as part of the regex perfectly acceptable. I don't really need any actual linking generated for these patterns.