I, personally, want save to act like committing a transaction. I don't like making changes to something and having every key typed or item clicked on be an imm

I, personally, want save to act like committing a transaction. I don't like making changes to something and having every key typed or item clicked on be an immediate change to the file. The common case for me is to start making changes, then save them when I'm ready, sometimes as another file name. At least 30 years of this behavior has been ingrained into my workflows. We have undo, but I'd also like to have a revert changes option that acts like rolling back a transaction. The simple rollback is to just close the file without saving, but that doesn't work if every change big or small is a commit.