I have no idea about #16411 and 520 sorry. It is quite baffling.
I think it might say "closes #16411" because it says "Fix #16411" in the title.
On Tue, Mar 12, 2019 at 5:32 PM Simon Peyton Jones
Ben, Matthew
I wrote up notes on how to get from MR to issue, and from issue to MR, in my help page: https://gitlab.haskell.org/ghc/ghc/wikis/working-conventions/git-lab-spj
(See “Issues” and “Merge requests” headings)
Alas, it seems that I was lying
Issue #16411 does not have a “relevant merge request” link to MR!520, even though the latter plainly mentions the former. That seems deeply strange, and makes it hard to see if the issue has a MR, let alone which one it is.
Somehow MR!520 says “closes #16411” rather than just “mentions #16411”. Perhaps this is good, but how did it know to do that?
Simon