bug#24469: undo-tree and ... when printing objects

[Noam Postavsky]

On Mon, Sep 19, 2016 at 9:29 AM, Fabrice Popineau
<fabrice.popineau@gmail.com> wrote:
>
> Recently, Emacs started to dump "..." in undo-tree savefiles.  For each
> file which is opened under Emacs, the undo-tree mode automatically saves
> the undo tree in a separate file and this undo tree is loaded back when
> the file is reloaded. The problem is in the way objects are printed.
> Obviously, no "..." string should appear in the undo-tree file and it
> started
> to happen only a few weeks ago.
>
> Thanks for any help / explanation on what's happening.

It sounds like maybe `print-level' and/or `print-length' is bound to a
non-nil value while the tree is being printed? Can you show an example
of a problematic undo-tree file?