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create code fences with backticks ` or tildes ~
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like so
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git diffshould be at the top of your answer! +1 for pointing out that it works even outside of a repository.echo one > foo; echo two > bar; git diff foo barproduces no output, whilediff foo barproduces1c1 < one --- > two(with proper formatting, of course)git diffdoesn't work for e.g. pipes