Variable: tar-subfile-mode
tar-subfile-mode is a buffer-local variable defined in tar-mode.el.gz.
Documentation
Non-nil if Tar-Subfile mode is enabled.
Use the command tar-subfile-mode(var)/tar-subfile-mode(fun) to change this variable.
Key Bindings
Source Code
;; Defined in /usr/src/emacs/lisp/tar-mode.el.gz
(define-minor-mode tar-subfile-mode
"Minor mode for editing an element of a tar-file.
This mode arranges for \"saving\" this buffer to write the data
into the tar-file buffer that it came from. The changes will
actually appear on disk when you save the tar-file's buffer."
;; Don't do this, because it is redundant and wastes mode line space.
;; :lighter " TarFile"
:lighter nil
(or (and (boundp 'tar-superior-buffer) tar-superior-buffer)
(error "This buffer is not an element of a tar file"))
(cond (tar-subfile-mode
(add-hook 'write-file-functions #'tar-subfile-save-buffer nil t)
;; turn off auto-save.
(auto-save-mode -1)
(setq buffer-auto-save-file-name nil))
(t
(remove-hook 'write-file-functions #'tar-subfile-save-buffer t))))