flowdock/flowdock-text — pull request #19 by lautis (2014-05-21 22:19:57+00:00)
Title: Allow any syntactically valid hostname preceded by protocol

Robuster URL handling to support custom private DNS entries.

These all should be linked

* https://foo.dmz
* http://local.host/path
* http://ab.cd
* www.example.com

But not these:

* foo.dmz
* local.host/path
* ab.cd