fix more links

Author: steveklabnik

src/doc/unstable-book/src/language-features/macro-literal-matcher.md

@@ -4,14 +4,14 @@ The tracking issue for this feature is: [#35625]
 
 The RFC is: [rfc#1576].
 
-With this feature gate enabled, the [list of fragment specifiers][frags] gains one more entry:
+With this feature gate enabled, the [list of designators] gains one more entry:
 
 * `literal`: a literal. Examples: 2, "string", 'c'
 
 A `literal` may be followed by anything, similarly to the `ident` specifier.
 
 [rfc#1576]: http://rust-lang.github.io/rfcs/1576-macros-literal-matcher.html
 [#35625]: https://github.com/rust-lang/rust/issues/35625
-[frags]: ../book/first-edition/macros.html#syntactic-requirements
+[list of designators]: ../reference/macros-by-example.html
 
 ------------------------

src/doc/unstable-book/src/language-features/plugin.md

@@ -137,8 +137,6 @@ of extensions.  See `Registry::register_syntax_extension` and the
 
 ## Tips and tricks
 
-Some of the [macro debugging tips](../book/first-edition/macros.html#debugging-macro-code) are applicable.
-
 You can use `syntax::parse` to turn token trees into
 higher-level syntax elements like expressions:
 

src/libcore/iter/iterator.rs

@@ -532,7 +532,7 @@ pub trait Iterator {
     /// If you're doing some sort of looping for a side effect, it's considered
     /// more idiomatic to use [`for`] than `map()`.
     ///
-    /// [`for`]: ../../book/first-edition/loops.html#for
+    /// [`for`]: ../../book/ch03-05-control-flow.html#looping-through-a-collection-with-for
     ///
     /// # Examples
     ///
@@ -580,7 +580,7 @@ pub trait Iterator {
     /// cases `for_each` may also be faster than a loop, because it will use
     /// internal iteration on adaptors like `Chain`.
     ///
-    /// [`for`]: ../../book/first-edition/loops.html#for
+    /// [`for`]: ../../book/ch03-05-control-flow.html#looping-through-a-collection-with-for
     ///
     /// # Examples
     ///
@@ -1669,7 +1669,7 @@ pub trait Iterator {
     /// use a `for` loop with a list of things to build up a result. Those
     /// can be turned into `fold()`s:
     ///
-    /// [`for`]: ../../book/first-edition/loops.html#for
+    /// [`for`]: ../../book/ch03-05-control-flow.html#looping-through-a-collection-with-for
     ///
     /// ```
     /// let numbers = [1, 2, 3, 4, 5];

src/libstd/lib.rs

@@ -185,7 +185,7 @@
 //! [slice]: primitive.slice.html
 //! [`atomic`]: sync/atomic/index.html
 //! [`collections`]: collections/index.html
-//! [`for`]: ../book/first-edition/loops.html#for
+/// [`for`]: ../../book/ch03-05-control-flow.html#looping-through-a-collection-with-for
 //! [`format!`]: macro.format.html
 //! [`fs`]: fs/index.html
 //! [`io`]: io/index.html
@@ -200,14 +200,14 @@
 //! [`sync`]: sync/index.html
 //! [`thread`]: thread/index.html
 //! [`use std::env`]: env/index.html
-//! [`use`]: ../book/first-edition/crates-and-modules.html#importing-modules-with-use
-//! [crate root]: ../book/first-edition/crates-and-modules.html#basic-terminology-crates-and-modules
+//! [`use`]: ../book/ch07-02-modules-and-use-to-control-scope-and-privacy.html#use-to-bring-paths-into-scope
+//! [crate root]: ../book/ch07-01-packages-and-crates-for-making-libraries-and-executables.html
 //! [crates.io]: https://crates.io
-//! [deref-coercions]: ../book/second-edition/ch15-02-deref.html#implicit-deref-coercions-with-functions-and-methods
+//! [deref-coercions]: ../book/ch15-02-deref.html#implicit-deref-coercions-with-functions-and-methods
 //! [files]: fs/struct.File.html
 //! [multithreading]: thread/index.html
 //! [other]: #what-is-in-the-standard-library-documentation
-//! [primitive types]: ../book/first-edition/primitive-types.html
+//! [primitive types]: ../book/ch03-02-data-types.html
 
 #![stable(feature = "rust1", since = "1.0.0")]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",