neovim/neovim — pull request #1213 by jszakmeister (2014-09-21 13:23:57+00:00)
Title: [RFC] Fix install permissions

This was a bit more work than I'd hoped for, but I think it achieves the goal. We will now do our best to make sure that Neovim is installed in a useful and not be corrupted by the user's umask. If directories already exist, those directories are left alone with their existing permissions--just like the Linux install command.