Update tutorials to use new attribute syntax (#13476)

src/doc/guide-macros.md

@@ -407,7 +407,7 @@ As an example, `loop` and `for-loop` labels (discussed in the lifetimes guide)
 will not clash. The following code will print "Hello!" only once:
 
 ~~~
-#[feature(macro_rules)];
+#![feature(macro_rules)]
 
 macro_rules! loop_x (
     ($e: expr) => (

src/doc/guide-pointers.md

@@ -250,7 +250,7 @@ struct.
 # Managed Pointers
 
 > **Note**: the `@` form of managed pointers is deprecated and behind a
-> feature gate (it requires a `#[feature(managed_pointers)];` attribute on
+> feature gate (it requires a `#![feature(managed_pointers)]` attribute on
 > the crate root; remember the semicolon!). There are replacements, currently 
 > there is `std::rc::Rc` and `std::gc::Gc` for shared ownership via reference
 > counting and garbage collection respectively.

src/doc/guide-testing.md

@@ -185,7 +185,7 @@ amount.
 For example:
 
 ~~~
-# #[allow(unused_imports)];
+# #![allow(unused_imports)]
 extern crate test;
 
 use std::slice;
@@ -247,7 +247,7 @@ recognize that some calculation has no external effects and remove
 it entirely.
 
 ~~~
-# #[allow(unused_imports)];
+# #![allow(unused_imports)]
 extern crate test;
 use test::BenchHarness;
 

src/doc/guide-unsafe.md

@@ -423,14 +423,14 @@ Current valid options are:
 # Avoiding the standard library
 
 By default, `std` is linked to every Rust crate. In some contexts,
-this is undesirable, and can be avoided with the `#[no_std];`
+this is undesirable, and can be avoided with the `#![no_std]`
 attribute attached to the crate.
 
 ```ignore
 # // FIXME #12903: linking failures due to no_std
 // the minimal library
-#[crate_type="lib"];
-#[no_std];
+#![crate_type="lib"]
+#![no_std]
 
 # // fn main() {} tricked you, rustdoc!
 ```
@@ -445,7 +445,7 @@ in the same format as a C:
 
 ```ignore
 # // FIXME #12903: linking failures due to no_std
-#[no_std];
+#![no_std]
 
 extern "rust-intrinsic" { fn abort() -> !; }
 #[no_mangle] pub extern fn rust_stack_exhausted() {
@@ -461,14 +461,14 @@ fn start(_argc: int, _argv: **u8) -> int {
 ```
 
 To override the compiler-inserted `main` shim, one has to disable it
-with `#[no_main];` and then create the appropriate symbol with the
+with `#![no_main]` and then create the appropriate symbol with the
 correct ABI and the correct name, which requires overriding the
 compiler's name mangling too:
 
 ```ignore
 # // FIXME #12903: linking failures due to no_std
-#[no_std];
-#[no_main];
+#![no_std]
+#![no_main]
 
 extern "rust-intrinsic" { fn abort() -> !; }
 #[no_mangle] pub extern fn rust_stack_exhausted() {
@@ -542,7 +542,7 @@ sugar for dynamic allocations via `malloc` and `free`:
 
 ```ignore
 # // FIXME #12903: linking failures due to no_std
-#[no_std];
+#![no_std]
 
 #[allow(ctypes)] // `uint` == `size_t` on Rust's platforms
 extern {

src/doc/po/ja/rust.md.po

@@ -252,7 +252,7 @@ msgstr "# モジュールとクレート"
 #: src/doc/rust.md:627
 #, fuzzy
 #| msgid "// Turn on a warning #[warn(non_camel_case_types)]"
-msgid "// Turn on a warning #[ warn(non_camel_case_types) ]; ~~~~"
+msgid "// Turn on a warning #![ warn(non_camel_case_types) ] ~~~~"
 msgstr ""
 "// 警告を有効にする\n"
 "#[warn(non_camel_case_types)]"

src/doc/po/ja/tutorial.md.po

@@ -4851,13 +4851,13 @@ msgstr ""
 #. type: Plain text
 #: src/doc/tutorial.md:3134
 #, fuzzy
-#| msgid "// Make a library (\"bin\" is the default)  #[crate_type = \"lib\"];"
+#| msgid "// Make a library (\"bin\" is the default)  #![crate_type = \"lib\"]"
 msgid ""
 "// This crate is a library (\"bin\" is the default)  #[crate_id = "
-"\"farm#2.5\"]; #[crate_type = \"lib\"];"
+"\"farm#2.5\"]; #![crate_type = \"lib\"]"
 msgstr ""
 "// ライブラリを作成する (\"bin\" がデフォルト値)\n"
-"#[crate_type = \"lib\"];"
+"#![crate_type = \"lib\"]"
 
 #. type: Plain text
 #: src/doc/tutorial.md:3139
@@ -4888,15 +4888,15 @@ msgstr ""
 #: src/doc/tutorial.md:3153
 #, fuzzy
 #| msgid ""
-#| "~~~~ // world.rs #[link(name = \"world\", vers = \"1.0\")]; pub fn "
+#| "~~~~ // world.rs #![link(name = \"world\", vers = \"1.0\")] pub fn "
 #| "explore() -> &str { \"world\" } ~~~~"
 msgid ""
-"~~~~ // `world.rs` #[crate_id = \"world#0.42\"]; # extern crate extra; pub fn "
+"~~~~ // `world.rs` #![crate_id = \"world#0.42\"] # extern crate extra; pub fn "
 "explore() -> &'static str { \"world\" } # fn main() {} ~~~~"
 msgstr ""
 "~~~~\n"
 "// world.rs\n"
-"#[link(name = \"world\", vers = \"1.0\")];\n"
+"#![link(name = \"world\", vers = \"1.0\")]\n"
 "pub fn explore() -> &str { \"world\" }\n"
 "~~~~"
 

src/doc/rustdoc.md

@@ -13,8 +13,8 @@ comments":
 ~~~
 // the "link" crate attribute is currently required for rustdoc, but normally
 // isn't needed.
-#[crate_id = "universe"];
-#[crate_type="lib"];
+#![crate_id = "universe"]
+#![crate_type="lib"]
 
 //! Tools for dealing with universes (this is a doc comment, and is shown on
 //! the crate index page. The ! makes it apply to the parent of the comment,

src/doc/tutorial.md

@@ -3094,8 +3094,8 @@ Therefore, if you plan to compile your crate as a library, you should annotate i
 ~~~~
 // `lib.rs`
 
-# #[crate_type = "lib"];
-#[crate_id = "farm#2.5"];
+# #![crate_type = "lib"]
+#![crate_id = "farm#2.5"]
 
 // ...
 # fn farm() {}
@@ -3119,8 +3119,8 @@ or setting the crate type (library or executable) explicitly:
 // ...
 
 // This crate is a library ("bin" is the default)
-#[crate_id = "farm#2.5"];
-#[crate_type = "lib"];
+#![crate_id = "farm#2.5"]
+#![crate_type = "lib"]
 
 // Turn on a warning
 #[warn(non_camel_case_types)]
@@ -3135,7 +3135,7 @@ We define two crates, and use one of them as a library in the other.
 
 ~~~~
 // `world.rs`
-#[crate_id = "world#0.42"];
+#![crate_id = "world#0.42"]
 
 # mod secret_module_to_make_this_test_run {
 pub fn explore() -> &'static str { "world" }
@@ -3209,12 +3209,12 @@ Both auto-insertions can be disabled with an attribute if necessary:
 
 ~~~
 // In the crate root:
-#[no_std];
+#![no_std]
 ~~~
 
 ~~~
 // In any module:
-#[no_implicit_prelude];
+#![no_implicit_prelude]
 ~~~
 
 See the [API documentation][stddoc] for details.