is_token_namespaced() doesn't take into account __NAMESPACE__ concatenation

[rebeccahum]

👋 When using the helper function is_token_namespaced(), it doesn't appear to pick up when the magic constant of __NAMESPACE__ is being concatenated:

https://github.com/WordPress/WordPress-Coding-Standards/blob/06966b26d8deb06a91a5c0f99a04802a6ff5e5bf/WordPress/Sniff.php#L1648-L1671

e.g. The below would return false:

__NAMESPACE__ . '\FOO_BAR';

I think we can just add a check if the token is T_NS_C.

Please let me know if I can provide any additional information!

[jrfnl]

The thing with this is that the actual token is not namespaced as constant encapsed text strings are not subject to the concept of namespaces.

__NAMESPACE__ returns a text string after all.

This method is not in this library for now anyway, but I'll have a think about this if/when I decide to add it.