Automatically unregister loggers when script language is deinitialized.

core/core_bind.cpp

@@ -718,6 +718,27 @@ void OS::remove_logger(const Ref<Logger> &p_logger) {
 	logger_bind->loggers.erase(p_logger);
 }
 
+void OS::remove_script_loggers(const ScriptLanguage *p_script) {
+	if (logger_bind) {
+		LocalVector<Ref<CoreBind::Logger>> to_remove;
+		for (const Ref<CoreBind::Logger> &logger : logger_bind->loggers) {
+			if (logger.is_null()) {
+				continue;
+			}
+			ScriptInstance *si = logger->get_script_instance();
+			if (!si) {
+				continue;
+			}
+			if (si->get_language() == p_script) {
+				to_remove.push_back(logger);
+			}
+		}
+		for (const Ref<CoreBind::Logger> &logger : to_remove) {
+			logger_bind->loggers.erase(logger);
+		}
+	}
+}
+
 void OS::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_entropy", "size"), &OS::get_entropy);
 	ClassDB::bind_method(D_METHOD("get_system_ca_certificates"), &OS::get_system_ca_certificates);

core/core_bind.h

@@ -311,6 +311,7 @@ public:
 
 	void add_logger(const Ref<Logger> &p_logger);
 	void remove_logger(const Ref<Logger> &p_logger);
+	void remove_script_loggers(const ScriptLanguage *p_script);
 
 	static OS *get_singleton() { return singleton; }
 

core/object/script_language.cpp

@@ -31,6 +31,7 @@
 #include "script_language.h"
 
 #include "core/config/project_settings.h"
+#include "core/core_bind.h"
 #include "core/debugger/engine_debugger.h"
 #include "core/debugger/script_debugger.h"
 #include "core/io/resource_loader.h"
@@ -330,6 +331,9 @@ void ScriptServer::finish_languages() {
 	}
 
 	for (ScriptLanguage *E : langs_to_finish) {
+		if (CoreBind::OS::get_singleton()) {
+			CoreBind::OS::get_singleton()->remove_script_loggers(E); // Unregister loggers using this script language.
+		}
 		E->finish();
 	}