class RuboCop::Cop::Lint::DuplicateRescueException


end
handle_other_exception
rescue SecondException
handle_exception
rescue FirstException
something
begin
# good
end
handle_other_exception
rescue FirstException
handle_exception
rescue FirstException
something
begin
# bad
@example
used in ‘rescue’ expressions.
Checks that there are no repeated exceptions

def on_rescue(node) 

def on_rescue(node)
  return if rescue_modifier?(node)
  node.resbody_branches.each_with_object(Set.new) do |resbody, previous|
    rescued_exceptions = resbody.exceptions
    rescued_exceptions.each do |exception|
      add_offense(exception) unless previous.add?(exception)
    end
  end
end