error_info.rb

require "English"

def some_method
  # I didn't know it would still be set here
  $ERROR_INFO # => #<RuntimeError: hell>
end

begin
  raise "hell"
rescue
  some_method

  # I kinda knew it would still be set here, which
  # enables you to write just `raise` and ruby will re-raise the rescued
  # exception
  $ERROR_INFO # => #<RuntimeError: hell>
end

# I think it makes sense it's not defined here
$ERROR_INFO # => nil