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make emacs ask to save modified non-file buffers

From: Xah
Subject: make emacs ask to save modified non-file buffers
Date: Sun, 22 Jun 2008 17:23:26 -0700 (PDT)
User-agent: G2/1.0

when i create a new buffer, how can i make emacs ask to save if it is

for example, i have this function:

(defun new-empty-buffer ()
  "Opens a new empty buffer."
  (let ((buf (generate-new-buffer "untitled")))
    (switch-to-buffer buf)
    (funcall (and initial-major-mode))
    (setq buffer-offer-save t)

after calling, it'll create a new buffer. Then, if user edit the
buffer, then close it (using either kill-buffer or kill-this-buffer),
then i want emacs to ask whether to save it if the buffer has been

according to the manual, the var buffer-offer-save will do it only if
the buffer is a visiting buffer. Then the manual talks about save-some-
buffers second argument but i don't see how this fits together, since
i don't actually want to call save-some-buffers.



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