Exposed set/get_project_metadata in EditorSettings.

doc/classes/EditorInterface.xml

@@ -4,7 +4,7 @@
 		Editor interface and main components.
 	</brief_description>
 	<description>
-		Editor interface. Allows saving and (re-)loading scenes, rendering mesh previews, inspecting and editing resources and objects and provides access to [EditorSettings], [EditorFileSystem], [EditorResourcePreview]\ er, [ScriptEditor], the editor viewport, as well as information about scenes. Also see [EditorPlugin] and [EditorScript].
+		Editor interface. Allows saving and (re-)loading scenes, rendering mesh previews, inspecting and editing resources and objects and provides access to [EditorSettings], [EditorFileSystem], [EditorResourcePreview], [ScriptEditor], the editor viewport, as well as information about scenes. Also see [EditorPlugin] and [EditorScript].
 	</description>
 	<tutorials>
 	</tutorials>

doc/classes/EditorSettings.xml

@@ -55,7 +55,19 @@
 				Get the list of favorite directories for this project.
 			</description>
 		</method>
-		<method name="get_project_settings_dir" qualifiers="const">
+		<method name="get_project_metadata" qualifiers="const">
+			<return type="Variant">
+			</return>
+			<argument index="0" name="section" type="String">
+			</argument>
+			<argument index="1" name="key" type="String">
+			</argument>
+			<argument index="2" name="default" type="Variant" default="null">
+			</argument>
+			<description>
+			</description>
+		</method>
+		<method name="get_project_settings_dir">
 			<return type="String">
 			</return>
 			<description>
@@ -131,6 +143,16 @@
 			<description>
 			</description>
 		</method>
+		<method name="set_project_metadata">
+			<argument index="0" name="section" type="String">
+			</argument>
+			<argument index="1" name="key" type="String">
+			</argument>
+			<argument index="2" name="data" type="Variant">
+			</argument>
+			<description>
+			</description>
+		</method>
 		<method name="set_recent_dirs">
 			<return type="void">
 			</return>

editor/editor_settings.cpp

@@ -1151,7 +1151,7 @@ void EditorSettings::set_project_metadata(const String &p_section, const String
 	cf->save(path);
 }
 
-Variant EditorSettings::get_project_metadata(const String &p_section, const String &p_key, Variant p_default) {
+Variant EditorSettings::get_project_metadata(const String &p_section, const String &p_key, Variant p_default) const {
 	Ref<ConfigFile> cf = memnew(ConfigFile);
 	String path = get_project_settings_dir().plus_file("project_metadata.cfg");
 	Error err = cf->load(path);
@@ -1493,6 +1493,9 @@ void EditorSettings::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_settings_dir"), &EditorSettings::get_settings_dir);
 	ClassDB::bind_method(D_METHOD("get_project_settings_dir"), &EditorSettings::get_project_settings_dir);
 
+	ClassDB::bind_method(D_METHOD("set_project_metadata", "section", "key", "data"), &EditorSettings::set_project_metadata);
+	ClassDB::bind_method(D_METHOD("get_project_metadata", "section", "key", "default"), &EditorSettings::get_project_metadata, DEFVAL(Variant()));
+
 	ClassDB::bind_method(D_METHOD("set_favorite_dirs", "dirs"), &EditorSettings::set_favorite_dirs);
 	ClassDB::bind_method(D_METHOD("get_favorite_dirs"), &EditorSettings::get_favorite_dirs);
 	ClassDB::bind_method(D_METHOD("set_recent_dirs", "dirs"), &EditorSettings::set_recent_dirs);

editor/editor_settings.h

@@ -167,7 +167,7 @@ public:
 	String get_cache_dir() const;
 
 	void set_project_metadata(const String &p_section, const String &p_key, Variant p_data);
-	Variant get_project_metadata(const String &p_section, const String &p_key, Variant p_default);
+	Variant get_project_metadata(const String &p_section, const String &p_key, Variant p_default) const;
 
 	void set_favorite_dirs(const Vector<String> &p_favorites_dirs);
 	Vector<String> get_favorite_dirs() const;