;; save file in the same directory as FILENAME. But if this
;; directory is not writable, use auto-save-directory-fallback.
;; FILENAME is assumed to be in non-directory form (no trailing slash).
;; save file in the same directory as FILENAME. But if this
;; directory is not writable, use auto-save-directory-fallback.
;; FILENAME is assumed to be in non-directory form (no trailing slash).