Tweak sketch.

sketching/sketch.dm

@@ -83,9 +83,9 @@ fn main(args) {
 // some other file
 
 fn log_printer(message) impl nonavosa_rail::train::Printer = msg =>
-    io::open_file('log.txt', io::Mode::Append) ->
-        { f => f.append(msg) } ->
-        io::close_file
+    io::open_file('log.txt', io::Mode::Append)
+        -> { f => f.append(msg) }
+        -> io::close_file
 
 fn main() {
     nonavosa_rail::main(log_printer)

src/lexer/mod.rs

@@ -227,4 +227,13 @@ mod tests {
         assert_eq!(Token::CurlyOpen, result[2]);
         assert_eq!(Token::CurlyClose, result[3]);
     }
+
+    #[test]
+    fn spread_operator() {
+        let result = tokenize(&String::from("{ ...props }")).unwrap();
+        assert_eq!(Token::CurlyOpen, result[0]);
+        assert_eq!(Token::Ellipsis, result[1]);
+        assert_eq!(Token::Identifier(String::from("props")), result[2]);
+        assert_eq!(Token::CurlyClose, result[3]);
+    }
 }