>> If you haven't created one, of course it would fail. It should help >> to do >> >> $ git hash-object -w --stdin </dev/null >> >> before running >> >> $ git diff 00750edc e69de29bb >> > > This is a viable solution, but it's a bit ugly since a read-only "diff" > requires ”write“ an empty blob. You could probably just do git cat-file -s e69de29bb to figure out whether a blob is empty. What is your end goal? Do you indeed want to produce a "trivial patch" which merely "adds" all the lines of the blob you'd like to compare to an empty one (assuming the blob conains text)?
