Sam Steingold <sds(a)goems.com> writes:
what's wrong with telling them to do:
(setq debug-on-error t debug-ignored-errors nil)
It is new. It is a sudden change of behaviour of the variable
debug-on-error. It can not be done through the menu etc. etc.
Moreover it is unnecessary, it much easier to tell experienced users
to do the equivalent of
(setq debug-ignored-errors suggested-ignored-errors)