Comment 9 for bug 1161826

I like my approach (and git diff approach) more because it is the least surprising:

$ diff | program > file

should produce a valid diff and

$ diff --color=yes | program > file

should produce a colored diff.

I expect that if GNU diff ever gets colored output, it will have this behaviour (like grep and git diff do).

But I fully understand that changing the defaults once set is difficult. Feel free to close this as wontfix.