I think it makes more sense to say that, for rsync, "foo/bar/" names the contents of the directory, while "foo/bar" names the directory itself. You could perhap

I think it makes more sense to say that, for rsync, "foo/bar/" names the contents of the directory, while "foo/bar" names the directory itself. You could perhaps think of "foo/bar/" as a shortcut for "foo/bar/*", except that it matches hidden files as well.