Auto merge of #28476 - steveklabnik:rollup, r=steveklabnik

- Successful merges: #28276, #28314, #28422, #28435, #28451, #28466, #28470, #28471, #28473, #28474
- Failed merges:

Author: bors

src/doc/reference.md

@@ -2762,7 +2762,7 @@ The following expressions are equivalent.
 let x = std::ops::Range {start: 0, end: 10};
 let y = 0..10;
 
-assert_eq!(x,y);
+assert_eq!(x, y);
 ```
 
 ### Unary operator expressions
@@ -3035,18 +3035,18 @@ A `loop` expression may optionally have a _label_. The label is written as
 a lifetime preceding the loop expression, as in `'foo: loop{ }`. If a
 label is present, then labeled `break` and `continue` expressions nested
 within this loop may exit out of this loop or return control to its head.
-See [Break expressions](#break-expressions) and [Continue
+See [break expressions](#break-expressions) and [continue
 expressions](#continue-expressions).
 
-### Break expressions
+### `break` expressions
 
 A `break` expression has an optional _label_. If the label is absent, then
 executing a `break` expression immediately terminates the innermost loop
 enclosing it. It is only permitted in the body of a loop. If the label is
 present, then `break 'foo` terminates the loop with label `'foo`, which need not
 be the innermost label enclosing the `break` expression, but must enclose it.
 
-### Continue expressions
+### `continue` expressions
 
 A `continue` expression has an optional _label_. If the label is absent, then
 executing a `continue` expression immediately terminates the current iteration
@@ -3059,7 +3059,7 @@ innermost label enclosing the `break` expression, but must enclose it.
 
 A `continue` expression is only permitted in the body of a loop.
 
-### While loops
+### `while` loops
 
 A `while` loop begins by evaluating the boolean loop conditional expression.
 If the loop conditional expression evaluates to `true`, the loop body block
@@ -3082,12 +3082,12 @@ Like `loop` expressions, `while` loops can be controlled with `break` or
 loops](#infinite-loops), [break expressions](#break-expressions), and
 [continue expressions](#continue-expressions) for more information.
 
-### For expressions
+### `for` expressions
 
 A `for` expression is a syntactic construct for looping over elements provided
 by an implementation of `std::iter::IntoIterator`.
 
-An example of a for loop over the contents of an array:
+An example of a `for` loop over the contents of an array:
 
 ```
 # type Foo = i32;
@@ -3117,7 +3117,7 @@ Like `loop` expressions, `for` loops can be controlled with `break` or
 loops](#infinite-loops), [break expressions](#break-expressions), and
 [continue expressions](#continue-expressions) for more information.
 
-### If expressions
+### `if` expressions
 
 An `if` expression is a conditional branch in program control. The form of an
 `if` expression is a condition expression, followed by a consequent block, any
@@ -3129,7 +3129,7 @@ evaluates to `false`, the consequent block is skipped and any subsequent `else
 if` condition is evaluated. If all `if` and `else if` conditions evaluate to
 `false` then any `else` block is executed.
 
-### Match expressions
+### `match` expressions
 
 A `match` expression branches on a *pattern*. The exact form of matching that
 occurs depends on the pattern. Patterns consist of some combination of
@@ -3235,7 +3235,7 @@ let message = match maybe_digit {
 };
 ```
 
-### If let expressions
+### `if let` expressions
 
 An `if let` expression is semantically identical to an `if` expression but in place
 of a condition expression it expects a refutable let statement. If the value of the
@@ -3256,15 +3256,15 @@ if let ("Ham", b) = dish {
 }
 ```
 
-### While let loops
+### `while let` loops
 
 A `while let` loop is semantically identical to a `while` loop but in place of a
 condition expression it expects a refutable let statement. If the value of the
 expression on the right hand side of the let statement matches the pattern, the
 loop body block executes and control returns to the pattern matching statement.
 Otherwise, the while expression completes.
 
-### Return expressions
+### `return` expressions
 
 Return expressions are denoted with the keyword `return`. Evaluating a `return`
 expression moves its argument into the designated output location for the

src/doc/trpl/error-handling.md

@@ -87,7 +87,9 @@ thread '<main>' panicked at 'Invalid number: 11', src/bin/panic-simple.rs:5
 Here's another example that is slightly less contrived. A program that accepts
 an integer as an argument, doubles it and prints it.
 
+<a name="code-unwrap-double"/>
 ```rust,should_panic
+
 use std::env;
 
 fn main() {
@@ -120,7 +122,7 @@ It would be better if we just showed the code for unwrapping because it is so
 simple, but to do that, we will first need to explore the `Option` and `Result`
 types. Both of these types have a method called `unwrap` defined on them.
 
-## The `Option` type
+### The `Option` type
 
 The `Option` type is [defined in the standard library][5]:
 
@@ -137,6 +139,7 @@ system is an important concept because it will cause the compiler to force the
 programmer to handle that absence. Let's take a look at an example that tries
 to find a character in a string:
 
+<a name="code-option-ex-string-find"/>
 ```rust
 // Searches `haystack` for the Unicode character `needle`. If one is found, the
 // byte offset of the character is returned. Otherwise, `None` is returned.

src/doc/trpl/guessing-game.md

@@ -599,7 +599,7 @@ With this definition, anything of type `Foo` can be either a
 `Foo::Bar` or a `Foo::Baz`. We use the `::` to indicate the
 namespace for a particular `enum` variant.
 
-The [`Ordering`][ordering] enum has three possible variants: `Less`, `Equal`,
+The [`Ordering`][ordering] `enum` has three possible variants: `Less`, `Equal`,
 and `Greater`. The `match` statement takes a value of a type, and lets you
 create an ‘arm’ for each possible value. Since we have three types of
 `Ordering`, we have three arms:
@@ -918,9 +918,9 @@ let guess: u32 = match guess.trim().parse() {
 
 This is how you generally move from ‘crash on error’ to ‘actually handle the
 error’, by switching from `ok().expect()` to a `match` statement. The `Result`
-returned by `parse()` is an enum just like `Ordering`, but in this case, each
+returned by `parse()` is an `enum` just like `Ordering`, but in this case, each
 variant has some data associated with it: `Ok` is a success, and `Err` is a
-failure. Each contains more information: the successful parsed integer, or an
+failure. Each contains more information: the successfully parsed integer, or an
 error type. In this case, we `match` on `Ok(num)`, which sets the inner value
 of the `Ok` to the name `num`, and then we just return it on the right-hand
 side. In the `Err` case, we don’t care what kind of error it is, so we just

src/doc/trpl/installing-rust.md

@@ -64,7 +64,7 @@ Oh, we should also mention the officially supported platforms:
 
 * Windows (7, 8, Server 2008 R2)
 * Linux (2.6.18 or later, various distributions), x86 and x86-64
-* OSX 10.7 (Lion) or greater, x86 and x86-64
+* OSX 10.7 (Lion) or later, x86 and x86-64
 
 We extensively test Rust on these platforms, and a few others, too, like
 Android. But these are the ones most likely to work, as they have the most