Feature request

Feature description
If chat radius is enabled and there is no other user in that radius and after the player sends a message there could be the following message displayed :
"There's no one near you! Try using ! or ? prefixes in your message"
or some other similar message.
Also, an automatic cooldown between sending that info message would be a great addition to this(eg. 1 minute), so the info message would not be sent after every lonely message.

How the feature is useful
This would be a great feature for those servers who use radius chat and a lonely player would not chat by themselves in vain.

This message already exists as localNoOne in messages.properties, but it's empty by default. You can enable it by adding the message to the localNoOne= line of your messages file.

Although, no source has said that such a feature exists. Thas why I asked it as a feature. But thanks for clarifying.