I don't understand why GitHub hasn't solved the issue of diffs starting with a '}' (or ')' or 'end'). Just slide the diff over while it starts with a closing token! I suppose it's an artifact of the diffing algorithm, but aren't there better diffing algorithms, even built-in within git?

This is by far the most obvious example of "git doesn't understand programming languages", but it also seems like the most straightforward to fix.