On 21 Oct 2014, at 10:29, Baldwin, Dave wrote:
You could just change the colour of the line number to indicated addition or change, that way the SCM flag doesn’t require any gutter space.
It’s very subtle for quickly scanning “where are the lines I changed” and will not allow indicating missing lines (which is a challenge with marks, but can be done) and it violates my concern about “not making the marks API too complex or hardcoded” (before other options have been exhausted).