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Re:Xi: an editor for the next 20 years [video] by bhoeting on Tuesday January 30, 2018 @08:49PM (#16270708)
I tried it after reading this comment. You weren't kidding. Unfortunately, my Vim isn't rendering properly. About 10 lines in the middle of the screen are blank for some reason. Both in and out of Tmux. Oh well. I'm just happy that I can look forward to Metal rendering being merged into stable.
Re:Xi: an editor for the next 20 years [video] by neoncontrails on Tuesday January 30, 2018 @10:32PM (#16271069)
Not sure if it's the same issue I had recently with iTerm2 periodically going black, but consider disabling the Core Text renderer with the following command:

$ defaults write org.vim.MacVim MMUseCGLayerAlways -bool YES

This was the developers' suggestion and it solved my issue. There's an informative discussion of the root causes here: https://github.com/macvim-dev/macvim/issues/557.

Re:Xi: an editor for the next 20 years [video] by bhoeting on Wednesday January 31, 2018 @02:30PM (#16276786)
Hmm, that didn't see to work for me. I think I have a different issue. Thanks, though!