all_previous_objects

all_previous_objects()  -  returns  an array of objects that called the
current function

object *all_previous_objects();

Returns an array of objects that called current  function.   Note  that
local  function  calls  do  not  set  previous_object()  to the current
object, but leave it unchanged.

call_other(3), call_out(3), origin(3), previous_object(3)