Implement pretty-printing of .. and update tests.

Update tests to change all `&expr[]` to `&expr[..]` to make sure pretty printing
passes.

src/libsyntax/print/pprust.rs

@@ -1813,9 +1813,7 @@ impl<'a> State<'a> {
                 if let &Some(ref e) = start {
                     try!(self.print_expr(&**e));
                 }
-                if start.is_some() || end.is_some() {
-                    try!(word(&mut self.s, ".."));
-                }
+                try!(word(&mut self.s, ".."));
                 if let &Some(ref e) = end {
                     try!(self.print_expr(&**e));
                 }

src/test/bench/shootout-fasta-redux.rs

@@ -180,7 +180,7 @@ impl<'a, W: Writer> RandomFasta<'a, W> {
 
     fn nextc(&mut self) -> u8 {
         let r = self.rng(1.0);
-        for a in &self.lookup[] {
+        for a in &self.lookup[..] {
             if a.p >= r {
                 return a.c;
             }

src/test/compile-fail/packed-struct-generic-transmute.rs

@@ -32,6 +32,6 @@ fn main() {
     let foo = Foo { bar: [1u8, 2, 3, 4, 5], baz: 10i32 };
     unsafe {
         let oof: Oof<[u8; 5], i32> = mem::transmute(foo);
-        println!("{:?} {:?}", &oof.rab[], oof.zab);
+        println!("{:?} {:?}", &oof.rab[..], oof.zab);
     }
 }

src/test/run-pass/auto-encode.rs

@@ -35,7 +35,7 @@ fn test_rbml<'a, 'b, A:
     let mut rbml_w = EBwriter::Encoder::new(&mut wr);
     a1.encode(&mut rbml_w);
 
-    let d: serialize::rbml::Doc<'a> = EBDoc::new(&wr[]);
+    let d: serialize::rbml::Doc<'a> = EBDoc::new(&wr);
     let mut decoder: EBReader::Decoder<'a> = EBreader::Decoder::new(d);
     let a2: A = Decodable::decode(&mut decoder);
     assert!(*a1 == a2);

src/test/run-pass/coerce-overloaded-autoderef.rs

@@ -47,19 +47,19 @@ fn use_slice(_: &[u8]) {}
 fn use_slice_mut(_: &mut [u8]) {}
 
 fn use_vec(mut v: Vec<u8>) {
-    use_slice_mut(&mut v[]); // what you have to write today
-    use_slice_mut(&mut v);   // what you'd be able to write
+    use_slice_mut(&mut v[..]); // what you have to write today
+    use_slice_mut(&mut v);     // what you'd be able to write
     use_slice_mut(&mut &mut &mut v);
 
-    use_slice(&v[]);    // what you have to write today
+    use_slice(&v[..]);  // what you have to write today
     use_slice(&v);      // what you'd be able to write
     use_slice(&&&&&&v);
     use_slice(&mut &&&&&v);
     use_slice(&&&mut &&&v);
 }
 
 fn use_vec_ref(v: &Vec<u8>) {
-    use_slice(&v[]);    // what you have to write today
+    use_slice(&v[..]);  // what you have to write today
     use_slice(v);       // what you'd be able to write
     use_slice(&&&&&&v);
     use_slice(&mut &&&&&v);

src/test/run-pass/deriving-encodable-decodable.rs

@@ -59,7 +59,7 @@ fn roundtrip<'a, T: Rand + Eq + Encodable<Encoder<'a>> +
     let mut w = Vec::new();
     let mut e = Encoder::new(&mut w);
     obj.encode(&mut e);
-    let doc = rbml::Doc::new(&w[]);
+    let doc = rbml::Doc::new(&w);
     let mut dec = Decoder::new(doc);
     let obj2 = Decodable::decode(&mut dec);
     assert!(obj == obj2);

src/test/run-pass/foreach-external-iterators-break.rs

@@ -11,7 +11,7 @@
 pub fn main() {
     let x = [1; 100];
     let mut y = 0;
-    for i in &x[] {
+    for i in &x[..] {
         if y > 10 {
             break;
         }

src/test/run-pass/foreach-external-iterators-nested.rs

@@ -13,8 +13,8 @@ pub fn main() {
     let y = [2; 100];
     let mut p = 0;
     let mut q = 0;
-    for i in &x[] {
-        for j in &y[] {
+    for i in &x[..] {
+        for j in &y[..] {
             p += *j;
         }
         q += *i + p;

src/test/run-pass/foreach-external-iterators.rs

@@ -11,7 +11,7 @@
 pub fn main() {
     let x = [1; 100];
     let mut y = 0;
-    for i in &x[] {
+    for i in &x[..] {
         y += *i
     }
     assert!(y == 100);

src/test/run-pass/issue-8898.rs

@@ -18,9 +18,9 @@ pub fn main() {
     let x  = [(), ()];
     let slice = &x[..1];
 
-    assert_repr_eq(&abc[], "[1, 2, 3]".to_string());
-    assert_repr_eq(&tf[], "[true, false]".to_string());
-    assert_repr_eq(&x[], "[(), ()]".to_string());
+    assert_repr_eq(&abc[..], "[1, 2, 3]".to_string());
+    assert_repr_eq(&tf[..], "[true, false]".to_string());
+    assert_repr_eq(&x[..], "[(), ()]".to_string());
     assert_repr_eq(slice, "[()]".to_string());
-    assert_repr_eq(&x[], "[(), ()]".to_string());
+    assert_repr_eq(&x[..], "[(), ()]".to_string());
 }

src/test/run-pass/repeated-vector-syntax.rs

@@ -13,9 +13,9 @@ pub fn main() {
     let y = [ 0; 1 ];
 
     print!("[");
-    for xi in &x[] {
-        print!("{:?}, ", &xi[]);
+    for xi in &x[..] {
+        print!("{:?}, ", &xi[..]);
     }
     println!("]");
-    println!("{:?}", &y[]);
+    println!("{:?}", &y[..]);
 }

src/test/run-pass/slice-2.rs

@@ -13,7 +13,6 @@
 fn main() {
     let x: &[int] = &[1, 2, 3, 4, 5];
     let cmp: &[int] = &[1, 2, 3, 4, 5];
-    assert!(&x[] == cmp);
     assert!(&x[..] == cmp);
     let cmp: &[int] = &[3, 4, 5];
     assert!(&x[2..] == cmp);
@@ -24,7 +23,7 @@ fn main() {
 
     let x: Vec<int> = vec![1, 2, 3, 4, 5];
     let cmp: &[int] = &[1, 2, 3, 4, 5];
-    assert!(&x[] == cmp);
+    assert!(&x[..] == cmp);
     let cmp: &[int] = &[3, 4, 5];
     assert!(&x[2..] == cmp);
     let cmp: &[int] = &[1, 2, 3];
@@ -35,7 +34,6 @@ fn main() {
     let x: &mut [int] = &mut [1, 2, 3, 4, 5];
     {
         let cmp: &mut [int] = &mut [1, 2, 3, 4, 5];
-        assert!(&mut x[] == cmp);
         assert!(&mut x[..] == cmp);
     }
     {
@@ -54,7 +52,6 @@ fn main() {
     let mut x: Vec<int> = vec![1, 2, 3, 4, 5];
     {
         let cmp: &mut [int] = &mut [1, 2, 3, 4, 5];
-        assert!(&mut x[] == cmp);
         assert!(&mut x[..] == cmp);
     }
     {

src/test/run-pass/slice.rs

@@ -80,11 +80,11 @@ impl IndexMut<RangeFull> for Foo {
 
 fn main() {
     let mut x = Foo;
-    &x[];
+    &x[..];
     &x[Foo..];
     &x[..Foo];
     &x[Foo..Foo];
-    &mut x[];
+    &mut x[..];
     &mut x[Foo..];
     &mut x[..Foo];
     &mut x[Foo..Foo];