diff view: dedicate more horizontal space to entirely Added or Removed files

[banksean]

When I view the diff of a new file that was added in a commit, the left side is empty. This is wasted space, and the code I want to read is squished up against the right side where I often have to scroll horizontally to read it:

The diff viewer could dedicate much more of the width to Added files by minimizing the left side, as I have done manually here:

The same applies for Removed files, but swap left for right.

Note also that even when you have "All files (...)" selected from the dropdown, the individual file rows have their own individual vertical separator positions so this would work even with commits that contain a mix of file additions/removals/edits.

[josharian]

I've definitely wished for this lots, across many different websites.