Remove tail return statements.

Per review feedback.

base64/base64.rs

@@ -89,7 +89,7 @@ pub fn uumain(args: Vec<String>) -> int {
         Version => version()
     }
 
-    return 0;
+    0
 }
 
 #[allow(dead_code)]

basename/basename.rs

@@ -86,7 +86,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     println(name.as_slice());
 
-    return 0;
+    0
 }
 
 fn strip_dir(fullname: &str) -> String {
@@ -99,7 +99,7 @@ fn strip_dir(fullname: &str) -> String {
         name.push_char(c);
     }
 
-    return name.as_slice().chars().rev().collect();
+    name.as_slice().chars().rev().collect()
 }
 
 fn strip_suffix(name: &str, suffix: &str) -> String {
@@ -111,5 +111,5 @@ fn strip_suffix(name: &str, suffix: &str) -> String {
         return name.slice_to(name.len() - suffix.len()).into_string();
     }
 
-    return name.into_string();
+    name.into_string()
 }

cat/cat.rs

@@ -81,7 +81,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec(files, number_mode, show_nonprint, show_ends, show_tabs, squeeze_blank);
 
-    return 0;
+    0
 }
 
 #[deriving(Eq, PartialEq)]
@@ -285,12 +285,12 @@ fn open(path: &str) -> Option<(Box<Reader>, bool)> {
     }
 
     match File::open(&std::path::Path::new(path)) {
-        Ok(f) => return Some((box f as Box<Reader>, false)),
+        Ok(f) => Some((box f as Box<Reader>, false)),
         Err(e) => {
             (writeln!(stderr(), "cat: {0:s}: {1:s}", path, e.to_str())).unwrap();
-            return None;
+            None
         },
-    };
+    }
 }
 
 struct UnsafeWriter<'a, W> {

cksum/cksum.rs

@@ -130,5 +130,5 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return exit_code;
+    exit_code
 }

comm/comm.rs

@@ -136,5 +136,5 @@ pub fn uumain(args: Vec<String>) -> int {
 
     comm(&mut f1, &mut f2, &matches);
 
-    return 0;
+    0
 }

cp/cp.rs

@@ -63,7 +63,7 @@ pub fn uumain(args: Vec<String>) -> int {
         Version => version(),
     }
 
-    return 0;
+    0
 }
 
 fn version() {

dirname/dirname.rs

@@ -68,5 +68,5 @@ directory).", opts).as_slice());
         println!("Try '{0:s} --help' for more information.", program);
     }
 
-    return 0;
+    0
 }

du/du.rs

@@ -86,7 +86,7 @@ fn du(path: &Path, mut my_stat: Stat,
 
     stats.push(Arc::new(my_stat));
 
-    return stats;
+    stats
 }
 
 #[allow(dead_code)]
@@ -367,5 +367,5 @@ Try '{program} --help' for more information.", s, program = program);
         print!("{}", line_separator);
     }
 
-    return 0;
+    0
 }

echo/echo.rs

@@ -66,7 +66,8 @@ fn convert_str(string: &str, index: uint, base: uint) -> (char, int) {
             }
         }
     }
-    return (to_char(&bytes, base), max_digits)
+
+    (to_char(&bytes, base), max_digits)
 }
 
 #[allow(dead_code)]
@@ -187,5 +188,5 @@ pub fn uumain(args: Vec<String>) -> int {
         println!("")
     }
 
-    return 0;
+    0
 }

env/env.rs

@@ -211,5 +211,5 @@ pub fn uumain(args: Vec<String>) -> int {
         print_env(opts.null);
     }
 
-    return 0;
+    0
 }

fold/fold.rs

@@ -83,7 +83,7 @@ pub fn uumain(args: Vec<String>) -> int {
         fold(files, bytes, spaces, width);
     }
 
-    return 0;
+    0
 }
 
 fn handle_obsolete(args: &[String]) -> (Vec<String>, Option<String>) {

groups/groups.rs

@@ -43,5 +43,5 @@ pub fn uumain(args: Vec<String>) -> int {
 
     group(get_pw_from_args(&matches.free), true);
 
-    return 0;
+    0
 }

head/head.rs

@@ -94,7 +94,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }
 
 // It searches for an option in the form of -123123

hostid/hostid.rs

@@ -84,7 +84,7 @@ pub fn uumain(args: Vec<String>) -> int {
         Version => version(),
     }
 
-    return 0;
+    0
 }
 
 fn version() {

hostname/hostname.rs

@@ -65,7 +65,7 @@ pub fn uumain(args: Vec<String>) -> int {
         _ => { help_menu(program.as_slice(), options); }
     };
 
-    return 0;
+    0
 }
 
 fn version() {

id/id.rs

@@ -195,7 +195,7 @@ pub fn uumain(args: Vec<String>) -> int {
         id_print(possible_pw, false, true, true)
     }
 
-    return 0;
+    0
 }
 
 fn pretty(possible_pw: Option<c_passwd>) {

kill/kill.rs

@@ -97,7 +97,7 @@ pub fn uumain(args: Vec<String>) -> int {
         Version => version(),
     }
 
-    return 0;
+    0
 }
 
 fn version() {
@@ -177,7 +177,7 @@ fn signal_by_name_or_value(signal_name_or_value: &str) -> Option<uint> {
             return Some(signal.value);
         }
     }
-    return None;
+    None
 }
 
 fn kill(signalname: &str, pids: std::vec::Vec<String>) {

logname/logname.rs

@@ -78,7 +78,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec();
 
-    return 0;
+    0
 }
 
 fn exec() {

md5sum/md5sum.rs

@@ -80,7 +80,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }
 
 fn md5sum(files: Vec<String>, binary: bool, check: bool, tag: bool, status: bool, quiet: bool, strict: bool, warn: bool) -> Result<(), int> {
@@ -150,7 +150,7 @@ fn md5sum(files: Vec<String>, binary: bool, check: bool, tag: bool, status: bool
         }
     }
 
-    return Ok(());
+    Ok(())
 }
 
 fn calc_sum(md5: &mut crypto::md5::Md5, file: &mut Reader, binary: bool) -> String {

mkdir/mkdir.rs

@@ -85,8 +85,8 @@ pub fn uumain(args: Vec<String>) -> int {
         crash!(1, "missing operand");
     }
     match exec(dirs, mk_parents, mode, verbose_flag) {
-        Ok(()) => return 0,
+        Ok(()) => 0,
-        Err(e) => return e
+        Err(e) => e
     }
 }
 
@@ -151,7 +151,7 @@ fn exec(dirs: Vec<String>, mk_parents: bool, mode: FilePermission, verbose: bool
         }
     }
 
-    return result;
+    result
 }
 
 /**

paste/paste.rs

@@ -57,7 +57,7 @@ pub fn uumain(args: Vec<String>) -> int {
         paste(matches.free, serial, delimiters.as_slice());
     }
 
-    return 0;
+    0
 }
 
 fn paste(filenames: Vec<String>, serial: bool, delimiters: &str) {

printenv/printenv.rs

@@ -60,7 +60,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec(matches.free, separator);
 
-    return 0;
+    0
 }
 
 pub fn exec(args: Vec<String>, separator: &str) {

pwd/pwd.rs

@@ -58,5 +58,5 @@ pub fn uumain(args: Vec<String>) -> int {
         return 0;
     }
 
-    return 0;
+    0
 }

rm/rm.rs

@@ -124,7 +124,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }
 
 // TODO: implement one-file-system
@@ -167,7 +167,7 @@ fn remove(files: Vec<String>, force: bool, interactive: InteractiveMode, one_fs:
         }
     }
 
-    return r;
+    r
 }
 
 fn remove_dir(path: &Path, name: &str, interactive: InteractiveMode, verbose: bool) -> Result<(), int> {
@@ -187,7 +187,7 @@ fn remove_dir(path: &Path, name: &str, interactive: InteractiveMode, verbose: bo
         }
     }
 
-    return Ok(());
+    Ok(())
 }
 
 fn remove_file(path: &Path, name: &str, interactive: InteractiveMode, verbose: bool) -> Result<(), int> {
@@ -207,7 +207,7 @@ fn remove_file(path: &Path, name: &str, interactive: InteractiveMode, verbose: b
         }
     }
 
-    return Ok(());
+    Ok(())
 }
 
 fn prompt_file(path: &Path, name: &str) -> bool {

rmdir/rmdir.rs

@@ -66,7 +66,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }
 
 fn remove(dirs: Vec<String>, ignore: bool, parents: bool, verbose: bool) -> Result<(), int>{
@@ -87,7 +87,7 @@ fn remove(dirs: Vec<String>, ignore: bool, parents: bool, verbose: bool) -> Resu
         }
     }
 
-    return r;
+    r
 }
 
 fn remove_dir(path: &Path, dir: &str, ignore: bool, parents: bool, verbose: bool) -> Result<(), int> {
@@ -124,6 +124,6 @@ fn remove_dir(path: &Path, dir: &str, ignore: bool, parents: bool, verbose: bool
         r = Err(1);
     }
 
-    return r;
+    r
 }
 

seq/seq.rs

@@ -88,7 +88,7 @@ pub fn uumain(args: Vec<String>) -> int {
     let terminator = escape_sequences(matches.opt_str("t").unwrap_or(separator.to_string()).as_slice());
     print_seq(first, step, last, separator, terminator, matches.opt_present("w"));
 
-    return 0;
+    0
 }
 
 fn done_printing(next: f32, step: f32, last: f32) -> bool {

sleep/sleep.rs

@@ -64,7 +64,7 @@ specified by the sum of their values.", opts).as_slice());
         sleep(matches.free);
     }
 
-    return 0;
+    0
 }
 
 fn sleep(args: Vec<String>) {

sum/sum.rs

@@ -129,5 +129,5 @@ pub fn uumain(args: Vec<String>) -> int {
 
     println!("{} {}", sum, blocks);
 
-    return 0;
+    0
 }

tac/tac.rs

@@ -70,7 +70,7 @@ pub fn uumain(args: Vec<String>) -> int {
         tac(files, before, regex, separator.as_slice());
     }
 
-    return 0;
+    0
 }
 
 fn tac(filenames: Vec<String>, before: bool, _: bool, separator: &str) {

touch/touch.rs

@@ -132,7 +132,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }
 
 fn stat(path: &Path, follow: bool) -> std::io::FileStat {

tr/tr.rs

@@ -199,5 +199,5 @@ pub fn uumain(args: Vec<String>) -> int {
         tr(set1.as_slice(), set2.as_slice());
     }
 
-    return 0;
+    0
 }

truncate/truncate.rs

@@ -100,7 +100,7 @@ file based on its current size:
         }
     }
 
-    return 0;
+    0
 }
 
 fn truncate(no_create: bool, _: bool, reference: Option<String>, size: Option<String>, filenames: Vec<String>) -> Result<(), int> {
@@ -159,7 +159,7 @@ fn truncate(no_create: bool, _: bool, reference: Option<String>, size: Option<St
             }
         }
     }
-    return Ok(());
+    Ok(())
 }
 
 fn parse_size(size: &str) -> (u64, TruncateMode) {

tty/tty.rs

@@ -71,7 +71,7 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     };
 
-    return exit_code as int;
+    exit_code as int
 }
 
 fn usage () {

uname/uname.rs

@@ -105,5 +105,5 @@ pub fn uumain(args: Vec<String>) -> int {
     }
     println!("{}", output.as_slice().trim_left());
 
-    return 0;
+    0
 }

unlink/unlink.rs

@@ -87,5 +87,5 @@ pub fn uumain(args: Vec<String>) -> int {
         }
     }
 
-    return 0;
+    0
 }

uptime/uptime.rs

@@ -81,7 +81,7 @@ pub fn uumain(args: Vec<String>) -> int {
     print_nusers(user_count);
     print_loadavg();
 
-    return 0;
+    0
 }
 
 fn print_loadavg() {

users/users.rs

@@ -84,7 +84,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec(filename);
 
-    return 0;
+    0
 }
 
 fn exec(filename: &str) {

wc/wc.rs

@@ -81,7 +81,7 @@ pub fn uumain(args: Vec<String>) -> int {
         Err(e) => return e
     }
 
-    return 0;
+    0
 }
 
 static CR: u8 = '\r' as u8;
@@ -192,7 +192,7 @@ pub fn wc(files: Vec<String>, matches: &Matches) -> StdResult<(), int> {
         print_stats("total", total_line_count, total_word_count, total_char_count, total_byte_count, total_longest_line_length, matches, max_str_len);
     }
 
-    return Ok(());
+    Ok(())
 }
 
 fn print_stats(filename: &str, line_count: uint, word_count: uint, char_count: uint,
@@ -241,11 +241,11 @@ fn open(path: String) -> StdResult<BufferedReader<Box<Reader>>, int> {
     match File::open(&std::path::Path::new(path.as_slice())) {
         Ok(fd) => {
             let reader = box fd as Box<Reader>;
-            return Ok(BufferedReader::new(reader));
+            Ok(BufferedReader::new(reader))
         },
         Err(e) => {
             show_error!("wc: {0:s}: {1:s}", path, e.desc.to_str());
-            return Err(1);
+            Err(1)
         }
     }
 }

whoami/whoami.rs

@@ -70,7 +70,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec();
 
-    return 0;
+    0
 }
 
 pub fn exec() {

yes/yes.rs

@@ -59,7 +59,7 @@ pub fn uumain(args: Vec<String>) -> int {
 
     exec(string.as_slice());
 
-    return 0;
+    0
 }
 
 pub fn exec(string: &str) {