Issue #16638 has been reported by rlafranchi (Richard LaFranchi).

----------------------------------------
Feature #16638: Structured Data for Syslog
https://bugs.ruby-lang.org/issues/16638

* Author: rlafranchi (Richard LaFranchi)
* Status: Open
* Priority: Normal
----------------------------------------
`Syslog::Logger` appears to conform to RFC5424, however doesn't support structured data unless I'm missing something.  This feature would implement the ability to add some meta data along with the message.

A format of a RFC5424 message is the following:
```
<PRIVAL> VERSION TIMESTAMP HOSTNAME APP-NAME PROCID MSGID STRUCTUREDDATA MSG
```

where STRUCTUREDDATA is zero or multiple elements in the format of `[ID1 KEY1="VALUE1" KEY2="VALUE2" ...][ID2 ....]`

Per [https://tools.ietf.org/html/rfc5424#section-7.3](https://tools.ietf.org/html/rfc5424#section-7.3) meta appears to be the appropriate id to use for arbitrary meta-information about a message, ex.

``` 
[meta foo="bar" cat="dog"]
```

Possible implementation:
```
logger = Syslog::Logger.new
logger.info "msg", meta: {foo: "bar", cat: "dog"}
```



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