//ww:error "#35: append() spread source shape unsupported (rule-7)"
package main;
fn mks() []str = {
	let xs: []str = [];
	let a: str = "abc";
	append(xs, a);
	return xs;
};
export fn main() i32 = {
	let ys: []str = [];
	append(ys, mks()...);
	return ys[0].len: i32;
};