// run-rustfix
#![warn(clippy::single_char_push_str)]

fn main() {
    let mut string = String::new();
    string.push('R');
    string.push('\'');

    string.push('u');
    string.push_str("st");
    string.push_str("");
    string.push('\x52');
    string.push('\u{0052}');
    string.push('a');
}
