D8321: darwin: use vim, not vi, to avoid data-loss inducing posix behavior

Closed by commit rHGc23877cb25a5: darwin: use vim, not vi, to avoid data-loss inducing posix behavior (authored by spectral). This revision was automatically updated to reflect the committed changes. This revision was not accepted when it landed; it landed in state "Needs Review". REPOSITORY r

D8321: darwin: use vim, not vi, to avoid data-loss inducing posix behavior

spectral created this revision. Herald added a subscriber: mercurial-devel. Herald added a reviewer: hg-reviewers. REVISION SUMMARY Apple's version of vim, available at opensource.apple.com/release/macos-1015.html (for Catalina, but this behavior has been there for a while) has several tweak