Upon closer inspection, Ebony has confirmed that neither of the PVP_COMBAT flags exist in the current Classic client (I've re-confirmed that, as well).

However, with how several people have now said something along the lines of "KEEP THIS A SECRET," only reinforces the idea that you know it could just disappear in the blink of an eye with a quick hotfix. While most multiboxers can handle themselves with such power, you know that the same people who potentially ruined it for you in the first place, are likely to be back at it again. So, yeah... should we start a pool to see how long /follow continues to function while in PvP combat?

Quote Originally Posted by Apatheist View Post
Not much chance of that. As soon as people see boxing in BG's there'll be a billion tickets and forum posts with people whining.
We don't know if /follow works in battlegrounds or not, since /follow was disabled on the entire battleground map, and so we won't know until battlegrounds are released (unless they beta test them beforehand).

Quote Originally Posted by Apatheist View Post
This is how it should be in 1.21, after all.
I've seen you say 1.21 before and thought it was a typo for 1.12, but now that you've said it again I assume I am wrong. So, to clarify, the Classic client is 1.13, not 1.21.