[tex-live] Possibility to enhance registers

[Robin Fairbairns]

Zdenek Wagner <zdenek.wagner at gmail.com> wrote:

> 2012/9/24 Robin Fairbairns <Robin.Fairbairns at cl.cam.ac.uk>:
>
> > position on page, perhaps?  we're operating in the dark, here: you're
> > letting out snippets of information, none of which is likely to be
> > diagnostic, so far.
>
> It may be even more complex because page breaking is an asynchronous
> operation.

which would explain the apparently random nature of the problem.

i wonder if "simply" redefining \mtc at BBR without that \unpenalty would
solve the problem ... at least in this case.

robin