Problems:
- sometimes the wrapping is off; I suspect Decolorize is missing some cases
- in the patch building panel, only shows the formatted diff as long as nothing
has been staged, because then it wants to color the line starts of the
included lines
- with delta, selection is almost invisible because we are only changing the
background color, but delta colors the background too (diff-so-fancy doesn't)
6fbd99a127