Tried with r117552 on darwin. (brew install emacs --HEAD)

Here is a screencast: http://asciinema.org/a/10895.

-- 

Guillaume J. Charmes
about.me/guillaumecharmes
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On Sat, Jul 19, 2014 at 12:58 PM, Stefan Monnier <monnier@iro.umontreal.ca>
wrote:

> > drag and drop pane separation: result in outputing escape charcters in
> > buffer (ex: [<0;133;27m), error:  Wrong type argument:
> number-or-marker-p,
> > nil
>
> Hmm... I don't see this behavior.  I was able to get
> a "number-or-marker-p, nil" error in "screen" and installed a fix
> for that.
> Can you try the latest trunk?  If the problem is still present, can you
> give a precise recipe (ideally under screen or tmux rather than
> directly in Terminal.all).
>
>
>         Stefan
>