jbe/bsw@0: --[[--
jbe/bsw@0: slot_content =
jbe/bsw@0: slot.use_temporary(
jbe/bsw@0:   function()
jbe/bsw@0:     ...
jbe/bsw@0:   end
jbe/bsw@0: )
jbe/bsw@0: 
jbe/bsw@0: This function creates a temporary slot and executes code in a way that slot.put(...) and other functions will write into the temporary slot. Afterwards the contents of the temporary slot are returned as a single string.
jbe/bsw@0: 
jbe/bsw@0: --]]--
jbe/bsw@0: 
jbe/bsw@0: function slot.use_temporary(block)
jbe/bsw@0:   local old_slot = slot._active_slot
jbe/bsw@0:   local temp_slot_reference = {}  -- just a unique reference
jbe/bsw@0:   slot._active_slot = temp_slot_reference
jbe/bsw@0:   block()
jbe/bsw@0:   slot._active_slot = old_slot
jbe/bsw@0:   local result = slot.get_content(temp_slot_reference)
jbe/bsw@0:   slot.reset(temp_slot_reference)
jbe/bsw@0:   return result
jbe/bsw@0: end