Link GFM issue, MR, and snippet links in code comments
When reviewing a MR, the diff sometimes contains links to issue that have been created because this MR is either not finished, or other things appeared while working on it. These links you'll have to copy paste in your address bar to go there to get the full context. Sometimes people even use GFM in comments, which is quite hard to use from there as copy pasting doesn't work anymore.