This is no longer a part of the World of Warcraft API. Replaced by GetPlayerMapPosition It was removed in patch 1.3.0.

Returns the postion of a unit relative to the world.

loc = GetCurrentPosition("unit");

Returns

locY, locX, locZ as one string.

locY 

Number - Y value of the player's position.

locX 

Number - X value of the player's position.

locZ 

Number - Z value of the player's position (0 is sea level).

Example

local locX, locY, locZ = GetCurrentPosition("player");
DEFAULT_CHAT_FRAME:AddMessage(locX .. ", " .. locY .. ", " .. locZ);

Result

1773.85, 63.06, -46.32