On Fri, 16 Jul 2010 22:55:40 +0200, Sebastian Rose <sebastian_rose@gmx.de> wrote:
> 
> Erik Iverson <eriki@ccbr.umn.edu> writes:
> > Hello,
> >
> > As I use org-mode more and more for actually writing things, I'm wondering what
> > your favorite Emacs word/line-wrapping mode is.
> >
> > Basically, I see two main ways of doing this, auto-fill-mode and
> > visual-line-mode.  Any others that you all use?  If you use auto-fill-mode or
> > visual-line-mode, are there any obvious drawbacks, particularly regarding
> > org-tables and source code blocks.
> 
> 
> I have this here bound to `SUPER-t':
> 
>     (defun sr-toggle-truncate-lines ()
>       "Lange Zeilen abschneiden, oder eben nicht."
>       (interactive)
>       (setq truncate-lines (if truncate-lines nil t)))
> 
> I use it to toggle truncate-lines in the rare cases I have to edit a
> longish piece of text, that must be on one line.

Sebastian, 

Emacs, at least since v22 or maybe longer, has a built-in function
"toggle-truncate-lines".