Porting "Refactors language holder"

code/modules/mob/living/say.dm

@@ -133,7 +133,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 	var/datum/language/message_language = get_message_language(message)
 	if(message_language)
 		// No, you cannot speak in xenocommon just because you know the key
-		if(can_speak_in_language(message_language))
+		if(can_speak_language(message_language))
 			language = message_language
 		message = copytext_char(message, 3)
 
@@ -141,7 +141,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 		message = trim_left(message)
 
 	if(!language)
-		language = get_default_language()
+		language = get_selected_language()
 
 	// Detection of language needs to be before inherent channels, because
 	// AIs use inherent channels for the holopad. Most inherent channels
@@ -415,11 +415,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 /mob/living/whisper(message, bubble_type, list/spans = list(), sanitize = TRUE, datum/language/language = null, ignore_spam = FALSE, forced = null)
 	say("#[message]", bubble_type, spans, sanitize, language, ignore_spam, forced)
 
-/mob/living/get_language_holder(shadow=TRUE)
-	if(mind && shadow)
-		// Mind language holders shadow mob holders.
-		. = mind.get_language_holder()
-		if(.)
-			return .
-
+/mob/living/get_language_holder(get_minds = TRUE)
+	if(get_minds && mind)
+		return mind.get_language_holder()
 	. = ..()