Built and tested a URL regex
Added a matcher for marked urls with a pipe
Started working on marking urls, but not there yet
Some specification work on how to mark URLs. Basically only played with regex and tests. I think I'm converging towards allowing in the display string of the URL anything that does not include a pipe. Also, the url markup will occur as a second layer after backticking so that if you want your pipe and URL not to greedily soak the entire preceeding string you should backtick it. If you want to keep font size just backtick with 1