Filters say of illegal characters (#13112)

* Filters say of illegal characters

* No more ~

code/modules/mob/say.dm

@@ -1,4 +1,7 @@
 
+#define ILLEGAL_CHARACTERS_LIST list("<" = "", ">" = "", "^" = "", \
+	"\[" = "", "]" = "", "{" = "", "}" = "")
+
 /mob/proc/say()
 	return
 
@@ -23,7 +26,7 @@
 		else if(response == "No")
 			return
 	*/
-
+	message = replace_characters(message, ILLEGAL_CHARACTERS_LIST)
 	set_typing_indicator(0)
 	usr.say(message)
 
@@ -205,4 +208,6 @@
 	. = ""
 	for(var/datum/multilingual_say_piece/S in message_pieces)
 		. += S.message + " "
-	. = trim_right(.)
+	. = trim_right(.)
+
+#undef ILLEGAL_CHARACTERS_LIST