Dumb? Rules Question

[Cleveland Guy]

I play in a rather relaxed home game, as we all want to play the right way, but we don't want to be the poker nazi's either.

It's a NLHE tournament.

A few guys do this, and I'm not sure how legit it would be outside of our little world. No one there seems to care, so maybe it's a legal move.

Player A Opens for a raise. Player B announces he wants to re-raise. He first moves his chips to the middle for the call - step 1. Then moves his chips to the middle for the raise - Step 2.

Is this allowed? or is it a string bet? He is announcing his intention before he acts, but he isn't making 1 swift move to the center with his chips.

Like I said - no one there cares, but as I go play other places live, I want to know which is the right move.