* Revises the name of Rails components (they have a space).
* Uniform word wrap at column 80..
* Uniform punctuation, according to our guidelines.
* Minor edits of details seen in passing.
When an application has multiple root entries with different
constraints, the current solution is to use `get '/'`. Example:
**Currently I have to do:**
```ruby
get '/', to: 'portfolio#show', constraints: ->(req) { Hostname.portfolio_site?(req.host) }
get '/', to: 'blog#show', constraints: ->(req) { Hostname.blog_site?(req.host) }
root 'landing#show'
```
**But I would like to do:**
```ruby
root 'portfolio#show', constraints: ->(req) { Hostname.portfolio_site?(req.host) }
root 'blog#show', constraints: ->(req) { Hostname.blog_site?(req.host) }
root 'landing#show'
```
Other URL matchers such as `get`, `post`, etc, already allows this, so I
think it's fair that `root` also allow it since it's just a shortcut for
a `get` internally.
With the previous implementation, the block passed to
define_singleton_method, which will live forever as the method body,
captures the parameters (args and block) in its enclosure.
For the current_scope registry, that can include an AR::Relation.
Adds a paragraph to the documentation of the `ActiveRecord::Scoping::Named.scope` method,
explaining that the method is intended to return an ActiveRecord::Relation object to be
composable with other scopes.
In the case that in the case that `nil` or `false` are returned, the method returns
an `all` relation instead.
This unexpected behaviour is mentioned in #19249#14256#21465 and #21882 and wasn't
documented at all. This commit adds this documentation.
Saw this while doing a review of a patch:
* Normalize case and punctuation across comments.
* ascii -> ASCII
* Since I was on it, some blank lines that visually
add some clarity IMO.
We'd see the failures and errors reported after the run, which is needless, when we've already
reported them.
Turns:
```
.......................................S....................F
This failed
bin/rails test test/models/bunny_test.rb:14
....
Finished in 0.100886s, 1020.9583 runs/s, 1001.1338 assertions/s.
2) Failure:
BunnyTest#test_something_failing [/Users/kasperhansen/Documents/code/collection_caching_test/test/models/bunny_test.rb:15]:
This failed
103 runs, 101 assertions, 1 failures, 0 errors, 1 skips
You have skipped tests. Run with --verbose for details.
```
Into:
```
...................S.......................................F
This failed
bin/rails test test/models/bunny_test.rb:14
......................
Finished in 0.069910s, 1473.3225 runs/s, 1444.7143 assertions/s.
103 runs, 101 assertions, 1 failures, 0 errors, 1 skips
```
`pk_and_sequence_for` is implemented for PG and MySQL adapters (not
implemented for Sqlite3 adapter). But MySQL adapters are not using
`pk_and_sequence_for` already.
