The SO post https://stackoverflow.com/q/77943180 tried to call
globalCallingHandlers() from a function, and it failed with the error
message "should not be called with handlers on the stack". A much
simpler illustration of the same error comes from this line:
try(globalCallingHandlers(warning = function(e) e))
The problem here is that try() sets an error handler, and
globalCallingHandlers() sees it and aborts.
If I call globalCallingHandlers() with no arguments, I get a list of
currently active global handlers. Is there also a way to get a list of
active handlers, including non-global ones (like the one try() added in
the line above)?
Duncan Murdoch
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