Method expect

core/src/tools/builtin/bash.rs:972–978

(&mut self, expected: char)

    }

    fn expect(&mut self, expected: char) -> Option<()> {
        self.skip_ws();
        match self.next()? {
            ch if ch == expected => Some(()),
            _ => None,
        }
    }
}

pub struct BashTool;