// run-rustfix #![warn(clippy::result_map_or_into_option)] fn main() { let opt: Result<u32, &str> = Ok(1); let _ = opt.map_or(None, Some); let rewrap = |s: u32| -> Option<u32> { Some(s) }; // A non-Some `f` arg should not emit the lint let opt: Result<u32, &str> = Ok(1); let _ = opt.map_or(None, rewrap); // A non-Some `f` closure where the argument is not used as the // return should not emit the lint let opt: Result<u32, &str> = Ok(1); opt.map_or(None, |_x| Some(1)); }