1 files changed, 9 insertions, 4 deletions

diff --git a/src/core.c b/src/core.c
index b839937..459a5be 100644
--- a/src/core.c
+++ b/src/core.c
@@ -843,7 +843,7 @@ int lcoreEndScissorMode( lua_State* L ) {
 */
 
 /*
-> shader = RL.LoadShader( string vsFileName, string fsFileName )
+> shader = RL.LoadShader( string|nil vsFileName, string|nil fsFileName )
 
 Load shader from files and bind default locations.
 NOTE: Set nil if no shader
@@ -867,7 +867,7 @@ int lcoreLoadShader( lua_State* L ) {
 }
 
 /*
-> shader = RL.LoadShaderFromMemory( string vsCode, string fsCode )
+> shader = RL.LoadShaderFromMemory( string|nil vsCode, string|nil fsCode )
 
 Load shader from code strings and bind default locations
 NOTE: Set nil if no shader
@@ -1761,7 +1761,7 @@ int lcoreLoadDirectoryFiles( lua_State* L ) {
 }
 
 /*
-> fileNames = RL.LoadDirectoryFilesEx( string basePath, string filter, bool scanSubdirs )
+> fileNames = RL.LoadDirectoryFilesEx( string basePath, string|nil filter, bool scanSubdirs )
 
 Load directory filepaths with extension filtering and recursive directory scan
 
@@ -1769,8 +1769,13 @@ Load directory filepaths with extension filtering and recursive directory scan
 */
 int lcoreLoadDirectoryFilesEx( lua_State* L ) {
 	bool scanSubdirs = uluaGetBoolean( L, 3 );
+	const char* basePath = luaL_checkstring( L, 1 );
+	char* filter = NULL;
 
-	FilePathList files = LoadDirectoryFilesEx( luaL_checkstring( L, 1 ), luaL_checkstring( L, 2 ), scanSubdirs );
+	if ( lua_isstring( L, 2 ) ) {
+		filter = (char*)lua_tostring( L, 2 );
+	}
+	FilePathList files = LoadDirectoryFilesEx( basePath, filter, scanSubdirs );
 
 	lua_createtable( L, files.count, 0 );