Does go-sqlcmd truncate nvarchar(max)?

[SirParser]

In the old sqlcmd it is necesary to use scripting variable SQLCMDMAXVARTYPEWIDTH or -y switch to allow "max" variables to store strings longer than 256 chars.
How does it work in the new version? Is the content of nvarchar(max) truncated (e.g. JSON string)? If so, are there settings to avoid that?

[shueybubbles]

we've preserved backward compatibility for the most part. Does the :XML command give you the untruncated rendering you need?