How do I create a readable diff of two spreadsheets using git diff?

Question

We have a lot of spreadsheets (xls) in our source code repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for u

Answer 1

Convert to cvs then upload to a version control system then diff with an advanced version control diff tool. When I used perforce it had a great diff tool, but I forget the name of it.