1 files changed, 24 insertions, 2 deletions
diff --git a/core/os/os.cpp b/core/os/os.cpp
index 63390919f4..12f85858c3 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -36,7 +36,6 @@
 #include "core/io/file_access.h"
 #include "core/os/midi_driver.h"
 #include "core/version_generated.gen.h"
-#include "servers/audio_server.h"
 
 #include <stdarg.h>
 
@@ -146,6 +145,10 @@ bool OS::is_stdout_verbose() const {
 	return _verbose_stdout;
 }
 
+bool OS::is_single_window() const {
+	return _single_window;
+}
+
 bool OS::is_stdout_debug_enabled() const {
 	return _debug_stdout;
 }
@@ -227,6 +230,12 @@ String OS::get_locale() const {
 	return "en";
 }
 
+// Non-virtual helper to extract the 2 or 3-letter language code from
+// `get_locale()` in a way that's consistent for all platforms.
+String OS::get_locale_language() const {
+	return get_locale().left(3).replace("_", "");
+}
+
 // Helper function to ensure that a dir name/path will be valid on the OS
 String OS::get_safe_dir_name(const String &p_dir_name, bool p_allow_dir_separator) const {
 	Vector<String> invalid_chars = String(": * ? \" < > |").split(" ");
@@ -272,6 +281,11 @@ String OS::get_bundle_resource_dir() const {
 	return ".";
 }
 
+// Path to macOS .app bundle embedded icon
+String OS::get_bundle_icon_path() const {
+	return String();
+}
+
 // OS specific path for user://
 String OS::get_user_data_dir() const {
 	return ".";
@@ -357,9 +371,17 @@ void OS::set_has_server_feature_callback(HasServerFeatureCallback p_callback) {
 }
 
 bool OS::has_feature(const String &p_feature) {
-	if (p_feature == get_name()) {
+	// Feature tags are always lowercase for consistency.
+	if (p_feature == get_name().to_lower()) {
 		return true;
 	}
+
+	// Catch-all `linuxbsd` feature tag that matches on both Linux and BSD.
+	// This is the one exposed in the project settings dialog.
+	if (p_feature == "linuxbsd" && (get_name() == "Linux" || get_name() == "FreeBSD" || get_name() == "NetBSD" || get_name() == "OpenBSD" || get_name() == "BSD")) {
+		return true;
+	}
+
 #ifdef DEBUG_ENABLED
 	if (p_feature == "debug") {
 		return true;