Function trim_whitespace

src/code_actions/extract_function.rs:2548–2552

()

    #[test]
    fn trim_whitespace() {
        let content = "  hello world  ";
        let result = trim_selection(content, 0, content.len());
        assert_eq!(result, Some((2, 13)));
    }

    #[test]
    fn trim_empty_rejected() {