Ability To Expand Hidden Diff In Both Directions

Problem to solve

When unchanged lines are collapsed between two blocks, it isn't possible to expand the unchanged lines in either direction. It always expands from the bottom.

This is annoying. It should be possible to expand in both directions.

Collapsed	After expanding

Target audience

This impacts all developers and personas that use diffs.

Further details

Original request

Screenshot Showing Desired Behavior (No Reason For Both Buttons To Expand The Same Direction)

Proposal

Make it possible to expand in both directions.

What does success look like, and how can we measure that?

Links / references

• Equivalent GitHub request: https://github.com/sindresorhus/refined-github/issues/1288