Re: [PATCH] Do not show empty diff in diff-cache uncached.

LT> I'm not sure I like this.

LT> I actually _expect_ that "git-diff-files" will show files that don't match LT> the index, even if they happen to have the exact content that the index LT> points to. It's how I know whether the index is up-to-date or not.

LT> The exact same thing is trye of git-diff-cache. If something isn't LT> up-to-date in the cache, you should show it, since certain operations LT> depend on the cache being updated.

Let me make sure that we are on the same page. I am only talking about '-p' (diff-patch) case in this patch. The code should continue to show the 0{40} SHA1 on the right hand side in diff-raw output. Do you still want to see the header in that case to match the diff-raw exactly?