Currently Shotgun supports a limited set of the textile markup language (https://en.wikipedia.org/wiki/Textile_(markup_language)) in the text editor: https://support.shotgunsoftware.com/entries/44465
For example bold and italics work but links like "Google":http://www.google.com/ don't get translated.
For us this is an issue as we are converting emails to tickets and some of the emails contain 600+ character links which then show up in the ticket instead of just being a hyperlink
So if you also like the textile library to be fully implemented and/or updated to the latest version please give this ticket your vote!
And if you also like me would prefer a more popular markup language like markdown (GitHub, StackOverflow etc.) please leave a comment.