(Lispex)

Use with-exception-handler for procedural handling and guard for condition-style matching over catchable error objects.

At a glance

LISPEX

(guard (e ((error-object? e) (error-object-message e))) (error "bad input"))

Result

OUTPUT

"bad input"

raise-continuable returns the handler result to the raise site; non-continuable raise cannot return normally.
Inspect error objects with the documented predicates/accessors rather than parsing rendered diagnostic text.
When no guard clause matches, the original fault is reraised unchanged.

ResourceLimit is not catchable, and host crashes are never converted into friendly guest errors.