Merge branch 'master' of github.com:rails/docrails

4 files changed, 43 insertions, 54 deletions

diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md
index 0592821a14..9252a248b2 100644
--- a/guides/source/active_record_querying.md
+++ b/guides/source/active_record_querying.md
@@ -514,7 +514,13 @@ SELECT * FROM clients WHERE (clients.orders_count IN (1,3,5))
 Post.where.not(author: author)
 ```
 
-In other words, this query can be generated by calling `where` with no argument, then immediately chain with `not` passing `where` conditions.
+In other words, this query can be generated by calling `where` with no argument,
+then immediately chain with `not` passing `where` conditions. This will generate
+SQL code like this:
+
+```sql
+SELECT * FROM posts WHERE (author_id != 1)
+```
 
 Ordering
 --------
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md
index 7f65d920df..1915252122 100644
--- a/guides/source/active_support_core_extensions.md
+++ b/guides/source/active_support_core_extensions.md
@@ -96,12 +96,13 @@ INFO: The predicate for strings uses the Unicode-aware character class `[:space:
 
 WARNING: Note that numbers are not mentioned. In particular, 0 and 0.0 are **not** blank.
 
-For example, this method from `ActionDispatch::Session::AbstractStore` uses `blank?` for checking whether a session key is present:
+For example, this method from `ActionController::HttpAuthentication::Token::ControllerMethods` uses `blank?` for checking whether a token is present:
 
 ```ruby
-def ensure_session_key!
-  if @key.blank?
-    raise ArgumentError, 'A key is required...'
+def authenticate(controller, &login_procedure)
+  token, options = token_and_options(controller.request)
+  unless token.blank?
+    login_procedure.call(token, options)
   end
 end
 ```
@@ -420,9 +421,9 @@ NOTE: Defined in `active_support/core_ext/object/with_options.rb`.
 
 ### JSON support
 
-Active Support provides a better implemention of `to_json` than the +json+ gem ordinarily provides for Ruby objects. This is because some classes, like +Hash+ and +OrderedHash+ needs special handling in order to provide a proper JSON representation.
+Active Support provides a better implemention of `to_json` than the `json` gem ordinarily provides for Ruby objects. This is because some classes, like `Hash` and `OrderedHash` needs special handling in order to provide a proper JSON representation.
 
-Active Support also provides an implementation of `as_json` for the <tt>Process::Status</tt> class.
+Active Support also provides an implementation of `as_json` for the `Process::Status` class.
 
 NOTE: Defined in `active_support/core_ext/object/to_json.rb`.
 
@@ -1987,7 +1988,7 @@ Produce a string representation of a number in human-readable words:
 1234567890123456.to_s(:human)  # => "1.23 Quadrillion"
 ```
 
-NOTE: Defined in `active_support/core_ext/numeric/formatting.rb`.
+NOTE: Defined in `active_support/core_ext/numeric/conversions.rb`.
 
 Extensions to `Integer`
 -----------------------
@@ -2045,7 +2046,7 @@ BigDecimal.new(5.00, 6).to_s  # => "5.0"
 
 ### `to_formatted_s`
 
-Te method `to_formatted_s` provides a default specifier of "F".  This means that a simple call to `to_formatted_s` or `to_s` will result in floating point representation instead of engineering notation:
+The method `to_formatted_s` provides a default specifier of "F".  This means that a simple call to `to_formatted_s` or `to_s` will result in floating point representation instead of engineering notation:
 
 ```ruby
 BigDecimal.new(5.00, 6).to_formatted_s  # => "5.0"
@@ -2432,7 +2433,7 @@ dup[1][2] = 4
 array[1][2] == nil   # => true
 ```
 
-NOTE: Defined in `active_support/core_ext/array/deep_dup.rb`.
+NOTE: Defined in `active_support/core_ext/object/deep_dup.rb`.
 
 ### Grouping
 
@@ -2658,45 +2659,7 @@ hash[:b][:e] == nil      # => true
 hash[:b][:d] == [3, 4]   # => true
 ```
 
-NOTE: Defined in `active_support/core_ext/hash/deep_dup.rb`.
-
-### Diffing
-
-The method `diff` returns a hash that represents a diff of the receiver and the argument with the following logic:
-
-* Pairs `key`, `value` that exist in both hashes do not belong to the diff hash.
-
-* If both hashes have `key`, but with different values, the pair in the receiver wins.
-
-* The rest is just merged.
-
-```ruby
-{a: 1}.diff(a: 1)
-# => {}, first rule
-
-{a: 1}.diff(a: 2)
-# => {:a=>1}, second rule
-
-{a: 1}.diff(b: 2)
-# => {:a=>1, :b=>2}, third rule
-
-{a: 1, b: 2, c: 3}.diff(b: 1, c: 3, d: 4)
-# => {:a=>1, :b=>2, :d=>4}, all rules
-
-{}.diff({})        # => {}
-{a: 1}.diff({})    # => {:a=>1}
-{}.diff(a: 1)      # => {:a=>1}
-```
-
-An important property of this diff hash is that you can retrieve the original hash by applying `diff` twice:
-
-```ruby
-hash.diff(hash2).diff(hash2) == hash
-```
-
-Diffing hashes may be useful for error messages related to expected option hashes for example.
-
-NOTE: Defined in `active_support/core_ext/hash/diff.rb`.
+NOTE: Defined in `active_support/core_ext/object/deep_dup.rb`.
 
 ### Working with Keys
 
@@ -3831,13 +3794,13 @@ def default_helper_module!
   module_path = module_name.underscore
   helper module_path
 rescue MissingSourceFile => e
-  raise e unless e.is_missing? "#{module_path}_helper"
+  raise e unless e.is_missing? "helpers/#{module_path}_helper"
 rescue NameError => e
   raise e unless e.missing_name? "#{module_name}Helper"
 end
 ```
 
-NOTE: Defined in `active_support/core_ext/name_error.rb`.
+NOTE: Defined in `actionpack/lib/abstract_controller/helpers.rb`.
 
 Extensions to `LoadError`
 -------------------------
@@ -3860,4 +3823,4 @@ rescue NameError => e
 end
 ```
 
-NOTE: Defined in `active_support/core_ext/load_error.rb`.
+NOTE: Defined in `actionpack/lib/abstract_controller/helpers.rb`.
diff --git a/guides/source/development_dependencies_install.md b/guides/source/development_dependencies_install.md
index 5647a4c1b7..415cedc4d6 100644
--- a/guides/source/development_dependencies_install.md
+++ b/guides/source/development_dependencies_install.md
@@ -57,9 +57,15 @@ If you are on Fedora or CentOS, you can run
 $ sudo yum install libxml2 libxml2-devel libxslt libxslt-devel
 ```
 
+If you are running Arch Linux, you're done with:
+
+```bash
+$ sudo pacman -S libxml2 libxslt
+```
+
 If you have any problems with these libraries, you can install them manually by compiling the source code. Just follow the instructions at the [Red Hat/CentOS section of the Nokogiri tutorials](http://nokogiri.org/tutorials/installing_nokogiri.html#red_hat__centos) .
 
-Also, SQLite3 and its development files for the `sqlite3-ruby` gem — in Ubuntu you're done with just
+Also, SQLite3 and its development files for the `sqlite3` gem — in Ubuntu you're done with just
 
 ```bash
 $ sudo apt-get install sqlite3 libsqlite3-dev
@@ -71,6 +77,12 @@ And if you are on Fedora or CentOS, you're done with
 $ sudo yum install sqlite3 sqlite3-devel
 ```
 
+If you are on Arch Linux, you will need to run:
+
+```bash
+$ sudo pacman -S sqlite
+```
+
 Get a recent version of [Bundler](http://gembundler.com/)
 
 ```bash
@@ -137,6 +149,14 @@ $ sudo yum install mysql-server mysql-devel
 $ sudo yum install postgresql-server postgresql-devel
 ```
 
+If you are running Arch Linux, MySQL isn't supported anymore so you will need to
+use MariaDB instead (see [this announcement](https://www.archlinux.org/news/mariadb-replaces-mysql-in-repositories/)):
+
+```bash
+$ sudo pacman -S mariadb libmariadbclient mariadb-clients
+$ sudo pacman -S postgresql postgresql-libs
+```
+
 After that, run:
 
 ```bash
diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md
index b7ec747a77..656e6d9956 100644
--- a/guides/source/upgrading_ruby_on_rails.md
+++ b/guides/source/upgrading_ruby_on_rails.md
@@ -322,7 +322,7 @@ config.assets.js_compressor = :uglifier
 
 ### sass-rails
 
-* `asset_url` with two arguments is deprecated. For example: `asset-url("rails.png", image)` becomes `asset-url("rails.png")`
+* `asset-url` with two arguments is deprecated. For example: `asset-url("rails.png", image)` becomes `asset-url("rails.png")`
 
 Upgrading from Rails 3.1 to Rails 3.2
 -------------------------------------