Various fixes upport from chomp (#15794)

* up-port

* more upstream commonality

code/datums/datum.dm

@@ -56,6 +56,7 @@
 #ifdef REFERENCE_TRACKING
 	var/tmp/running_find_references
 	var/tmp/last_find_references = 0
+	var/tmp/find_references_on_destroy = FALSE //set this to true on an item to have it find refs after
 	#ifdef REFERENCE_TRACKING_DEBUG
 	///Stores info about where refs are found, used for sanity checks and testing
 	var/list/found_refs
@@ -113,6 +114,14 @@
 
 	tag = null
 	SStgui.close_uis(src)
+
+	#ifdef REFERENCE_TRACKING
+	if(find_references_on_destroy)
+		return QDEL_HINT_FINDREFERENCE
+	if(SSgarbage.find_reference_on_fail_global_toggle)
+		return QDEL_HINT_IFFAIL_FINDREFERENCE
+	#endif
+
 	return QDEL_HINT_QUEUE
 
 /**

code/datums/reference_tracking.dm

@@ -1,6 +1,6 @@
 #ifdef REFERENCE_TRACKING
 
-/datum/proc/find_references(skip_alert)
+/datum/proc/find_references(skip_alert = TRUE)
 	running_find_references = type
 	if(usr?.client)
 		if(usr.client.running_find_references)
@@ -28,7 +28,11 @@
 
 	//Time to search the whole game for our ref
 	DoSearchVar(GLOB, "GLOB") //globals
-	log_reftracker("Finished searching globals")
+	log_reftracker("Finished searching GLOB")
+
+	for(var/thing in global.vars)
+		DoSearchVar(thing, "Global variable -> [nameof(thing)]", search_time = starting_time)
+	log_reftracker("Finished searching global.vars")
 
 	for(var/datum/thing in world) //atoms (don't beleive its lies)
 		DoSearchVar(thing, "World -> [thing.type]", search_time = starting_time)