"Jeffery B. Rancier" <jeff.rancier@softechnics.com> wrote in message
news:mailman.938.1074548626.928.help-gnu-emacs@gnu.org...
Periodically, I get the message:
,----
| Auto-save off (in this buffer)
`----
In the mode-line. It doesn't seem to be based on the file type. What
determines this?
From the "Auto-Save Files" node in emacs info:
When you delete a substantial part of the text in
a large buffer, auto save turns off temporarily in
that buffer. This is because if you deleted the
text unintentionally, you might find the auto-save
file more useful if it contains the deleted text.
To reenable auto-saving after this happens, save
the buffer with `C-x C-s', or use `C-u 1 M-x
auto-save'.