fishシェルの場合
vim -O (git diff -m --name-only | uniq)
bashの場合(多分) git diff -m --name-only | uniq | xargs vim -O
happiness (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) (^_^) happiness
fishシェルの場合
vim -O (git diff -m --name-only | uniq)
bashの場合(多分) git diff -m --name-only | uniq | xargs vim -O