I want the backup files to be created in sub-directories of the files being edited, and I have created a function returns that directory.
(defun tempfilepath () (interactive) (concat (file-name-directory buffer-file-name) "./editorbackups") )
So I need
backup-directory-alist to be something like
(setq backup-directory-alist `("." . tempfilepath))
tempfilepath will be evaluated when the file at runtime so all the backup files are saved under the files folders.
I am not sure how to get the syntax right and the role
make-backup-file-name-function if it is necessary in this case.