Package: Emacs
Version: 30.0.50


Currently, in *Backtrace* we have a nice behavior for cl-printed objects
where they're truncated by default to a manageable size but we can click
on the "..." to expand them when needed.

The patch below moves most of that functionality to `cl-print.el` such
that it can be enjoyed "everywhere".

I think the patch is almost ready for `master` (beside the usual etc/NEWS
bit and checking whether the manual needs to be updated) but would
welcome other people's opinions.


        Stefan