Merge pull request #123 from akihiro17/trailing-comma

src/modules/expression/literal/array.rs

@@ -50,6 +50,9 @@ impl SyntaxModule<ParserMetadata> for Array {
                     if token(meta, "[").is_ok() {
                         return error!(meta, tok, "Arrays cannot be nested due to the Bash limitations")
                     }
+                    if token(meta, "]").is_ok() {
+                        break;
+                    }
                     // Parse array value
                     let mut value = Expr::new();
                     syntax(meta, &mut value)?;

src/tests/validity.rs

@@ -534,6 +534,15 @@ fn array_init() {
     test_amber!(code, "1 2 3 4 5");
 }
 
+#[test]
+fn array_init_with_trailing_comma() {
+    let code = "
+        let a = [1, 2, 3, 4, 5,]
+        echo a
+    ";
+    test_amber!(code, "1 2 3 4 5");
+}
+
 #[test]
 fn array_assign() {
     let code = "