rustfmt-nightly 0.4.2

// rustfmt-normalize_comments: true
// rustfmt-indent_style: Visual
// Test chain formatting.

fn main() {
    // Don't put chains on a single line if it wasn't so in source.
    let a = b.c.d.1.foo(|x| x + 1);

    bbbbbbbbbbbbbbbbbbb.ccccccccccccccccccccccccccccccccccccc
                       .ddddddddddddddddddddddddddd();

    bbbbbbbbbbbbbbbbbbb.ccccccccccccccccccccccccccccccccccccc
                       .ddddddddddddddddddddddddddd
                       .eeeeeeee();

    // Test case where first chain element isn't a path, but is shorter than
    // the size of a tab.
    x().y(|| match cond() {
        true => (),
        false => (),
    });

    loong_func().quux(move || if true { 1 } else { 2 });

    some_fuuuuuuuuunction().method_call_a(aaaaa, bbbbb, |c| {
        let x = c;
        x
    });

    some_fuuuuuuuuunction().method_call_a(aaaaa, bbbbb, |c| {
                               let x = c;
                               x
                           })
                           .method_call_b(aaaaa, bbbbb, |c| {
                               let x = c;
                               x
                           });

    fffffffffffffffffffffffffffffffffff(a, {
        SCRIPT_TASK_ROOT.with(|root| {
                                  *root.borrow_mut() = Some(&script_task);
                              });
    });

    let suuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuum =
        xxxxxxx.map(|x| x + 5)
               .map(|x| x / 2)
               .fold(0, |acc, x| acc + x);

    aaaaaaaaaaaaaaaa.map(|x| {
                             x += 1;
                             x
                         })
                    .filter(some_mod::some_filter)
}

fn floaters() {
    let z = Foo { field1: val1,
                  field2: val2, };

    let x = Foo { field1: val1,
                  field2: val2, }.method_call()
            .method_call();

    let y = if cond { val1 } else { val2 }.method_call();

    {
        match x {
            PushParam => {
                // params are 1-indexed
                stack.push(mparams[match cur.to_digit(10) {
                                       Some(d) => d as usize - 1,
                                       None => return Err("bad param number".to_owned()),
                                   }].clone());
            }
        }
    }

    if cond {
        some();
    } else {
        none();
    }.bar()
    .baz();

    Foo { x: val }.baz(|| {
                           force();
                           multiline();
                       })
                  .quux();

    Foo { y: i_am_multi_line,
          z: ok, }.baz(|| {
             force();
             multiline();
         })
    .quux();

    a + match x {
            true => "yay!",
            false => "boo!",
        }.bar()
}

fn is_replaced_content() -> bool {
    constellat.send(ConstellationMsg::ViewportConstrained(self.id, constraints))
              .unwrap();
}

fn issue587() {
    a.b::<()>(c);

    std::mem::transmute(dl.symbol::<()>("init").unwrap())
}

fn issue_1389() {
    let names = String::from_utf8(names)?.split('|')
                                         .map(str::to_owned)
                                         .collect();
}

fn issue1217() -> Result<Mnemonic, Error> {
    let random_chars: String = OsRng::new()?.gen_ascii_chars()
                                            .take(self.bit_length)
                                            .collect();

    Ok(Mnemonic::new(&random_chars))
}

fn issue1236(options: Vec<String>) -> Result<Option<String>> {
    let process = Command::new("dmenu").stdin(Stdio::piped())
                                       .stdout(Stdio::piped())
                                       .spawn()
                                       .chain_err(|| "failed to spawn dmenu")?;
}

fn issue1434() {
    for _ in 0..100 {
        let prototype_id =
            PrototypeIdData::from_reader::<_, B>(&mut self.file_cursor).chain_err(|| {
                format!("could not read prototype ID at offset {:#010x}",
                        current_offset)
            })?;
    }
}

fn issue2264() {
    {
        something.function()
                 .map(|| {
                          if let a_very_very_very_very_very_very_very_very_long_variable =
                              compute_this_variable()
                          {
                              println!("Hello");
                          }
                      })
                 .collect();
    }
}