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<!---
This file is reset every time a new release is done. This file describes changes that have not yet been released.
Example Doc Change:
### Headline for the required change
Description of the required change.
-->
### value_for_platform Method
- where <code>"platform"</code> can be a comma-separated list, each specifying a platform, such as Red Hat, openSUSE, or Fedora, <code>version</code> specifies the version of that platform, and <code>value</code> specifies the value that will be used if the node's platform matches the <code>value_for_platform</code> method. If each value only has a single platform, then the syntax is like the following:
+ where <code>platform</code> can be a comma-separated list, each specifying a platform, such as Red Hat, openSUSE, or Fedora, <code>version</code> specifies either the exact version of that platform, or a constraint to match the platform's version against. The following rules apply to constraint matches:
+ * Exact matches take precedence no matter what, and should never throw exceptions.
+ * Matching multiple constraints raises a <code>RuntimeError</code>.
+ * The following constraints are allowed: <code><,<=,>,>=,~></code>.
+
+ The following is an example of using the method with constraints:
+
+ ```ruby
+ value_for_platform(
+ "os1" => {
+ "< 1.0" => "less than 1.0",
+ "~> 2.0" => "version 2.x",
+ ">= 3.0" => "version 3.0",
+ "3.0.1" => "3.0.1 will always use this value" }
+ )
+ ```
+ If each value only has a single platform, then the syntax is like the following:
### environment attribute to git provider
Similar to other environment options:
```
environment Hash of environment variables in the form of {"ENV_VARIABLE" => "VALUE"}.
```
Also the `user` attribute should mention the setting of the HOME env var:
```
user The system user that is responsible for the checked-out code. The HOME environment variable will automatically be
set to the home directory of this user when using this option.
```
### Metadata `name` Attribute is Required.
Current documentation states:
> The name of the cookbook. This field is inferred unless specified.
This is no longer correct as of 12.0. The `name` field is required; if
it is not specified, an error will be raised if it is not specified.
### chef-zero port ranges
- to avoid crashes, by default, Chef will now scan a port range and take the first available port from 8889-9999.
- to change this behavior, you can pass --chef-zero-port=PORT_RANGE (for example, 10,20,30 or 10000-20000) or modify Chef::Config.chef_zero.port to be a po
rt string, an enumerable of ports, or a single port number.
### Encrypted Data Bags Version 3
Encrypted Data Bag version 3 uses [GCM](http://en.wikipedia.org/wiki/Galois/Counter_Mode) internally. Ruby 2 and OpenSSL version 1.0.1 or higher are required to use it.
### New windows_service resource
The windows_service resource inherits from the service resource and has all the same options but adds an action and attribute.
action :configure_startup - sets the startup type on the resource to the value of the `startup_type` attribute
attribute startup_type - the value as a symbol that the startup type should be set to on the service, valid options :automatic, :manual, :disabled
Note that the service resource will also continue to set the startup type to automatic or disabled, respectively, when the enabled or disabled actions are used.
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