phabricator has had this feature forever. Here's an example diff: https://secure.phabricator.com/rP1b026fa6291fd86ed6a2e598e6a013b5b6124532 https://secure.phabr

phabricator has had this feature forever. Here's an example diff: https://secure.phabricator.com/rP1b026fa6291fd86ed6a2e598e6a013b5b6124532 https://secure.phabricator.com/rP1b026fa6291fd86ed6a2e598e6a...