Kernel.reraise

You're seeing just the macro reraise, go back to Kernel module for more information.

reraise(message, stacktrace)

Raises an exception preserving a previous stacktrace.

Works like raise/1 but does not generate a new stacktrace.

Note that __STACKTRACE__ can be used inside catch/rescue to retrieve the current stacktrace.

try do
  raise "oops"
rescue
  exception ->
    reraise exception, __STACKTRACE__
end

(macro)

Raises an exception preserving a previous stacktrace.

reraise/3 works like reraise/2, except it passes arguments to the exception/1 function as explained in raise/2.

try do
  raise "oops"
rescue
  exception ->
    reraise WrapperError, [exception: exception], __STACKTRACE__
end