I'm not sure I understand what you are referring to. Are you saying you want the long lines to be wrapped in the diff display? If so, I really can't see how this is an issue with GitHub since this is how the unified diff output is suppose to look like. Displaying it any differently would be misleading since it is a long line.
I don't find it too misleading. But long line could be made to look even more different (from multiple short lines) by having distinct color, typography marks etc.
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I'm not sure I understand what you are referring to. Are you saying you want the long lines to be wrapped in the diff display? If so, I really can't see how this is an issue with GitHub since this is how the unified diff output is suppose to look like. Displaying it any differently would be misleading since it is a long line.
I think he wanted to see something like this instead:
http://f.cl.ly/items/0B2T3i1o1A3y062q0K1Z/Image%202013.12.02...
I don't find it too misleading. But long line could be made to look even more different (from multiple short lines) by having distinct color, typography marks etc.