From ef80bd0c5f094143ab4f64a09da631c782234590 Mon Sep 17 00:00:00 2001
From: Robert Bendun <rob.bendun@gmail.com>
Date: Mon, 9 Jan 2023 10:05:15 +0100
Subject: [PATCH] builtin rotate: fix no arguments other then shift (#39)

---
 musique/interpreter/builtin_functions.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/musique/interpreter/builtin_functions.cc b/musique/interpreter/builtin_functions.cc
index 0e57747..072a7cf 100644
--- a/musique/interpreter/builtin_functions.cc
+++ b/musique/interpreter/builtin_functions.cc
@@ -1255,6 +1255,11 @@ static Result<Value> builtin_rotate(Interpreter &i, std::vector<Value> args)
 
 	if (args.size()) {
 		if (auto const offset_source = get_if<Number>(args.front())) {
+
+			if (args.size() == 1) {
+				return Array{};
+			}
+
 			auto offset = offset_source->as_int();
 			auto array = Try(flatten(i, std::span(args).subspan(1)));
 			if (offset > 0) {