Viewing any changes to a file on different git branches

Question

I'm convinced I've written a method in a different branch, but not the current one. Is there any way to view all changes to a file in different branches, ideally one that ignores branches merged into the current branch?

Answer 1

To see all changes to files between two branches do the following:

git diff --stat <branch1> <branch2>

Then if you see the file that has changed between those two branches do:

git diff <branch1> <branch2> -- /path/to/file

If that's not enough, let me know.

Update: It appears this may be a duplicate of " How can I search Git branches for a file or directory? "