When I edit a question and change a link from http://www.example.com to
[this](http://www.example.com), does it count as 8 characters edited, or as deleting the whole link and retyping (so 30 characters)? When I look at my edit again and see an an edited link I made, all of it is striked through and new text next to it written in green. Does this mean that I edited more characters?
The same with code blocks and blockquotes. How exactly does the character edit counting system work?