This patch can't be merged right away: I need to sort out the exact SLIME version where the feature will be introduced. Some doc update is needed, too.
According to orgmode.org, I can link to a public repository and the branch. Repository: https://gitlab.com/akater/org-mode Branch: ob-lisp-traces-and-errors The patch can be reviewed in web browser: https://gitlab.com/akater/org-mode/-/commit/e7dbc0b8 URI for all commits, just in case: https://gitlab.com/akater/org-mode/-/commits/ob-lisp-traces-and-errors This is a follow-up to the message https://lists.gnu.org/archive/html/emacs-orgmode/2020-04/msg00137.html Unfortunately, I can't reply to the message directly at the moment. I mentioned compatibility issue for users who wouldn't update SLIME and Org simultaneously; this patch resolves the issue for users with new Org and old SLIME.
