🚀 go-pugleaf

Emacs mail-mode uses the modified bit to determine whether the message
being composed has been sent.  However, this generates incorrect
behavior when the buffer is visiting a file.

Visit a file, and type M-x mail-mode to enter mail mode.  Now type some
text into the buffer (in the format of an emacs mail message), and type
C-c C-s (mail-send).  The message will be mailed, and the buffer status
will be toggled to unmodified, even though the contents of the buffer do
not match the file on disk.

I would find either of the following solutions acceptable:

   (1) If the buffer is visiting a file, mail-send does not clear the
       modified bit.

   (2) If the buffer is visiting a file, mail-send saves the file.

                                        David desJardins