Obviously every method in UnityScript has a separate scope for variables, but blocks don't:

var y;
if (true) {
    var y; // error: There is already a local variable with the name 'y'.
    var x;
} else {
    var x; // error: There is already a local variable with the name 'x'.
}

From what i found on the wiki, an older version of UnityScript had the usual approach of blocks providing a new declaration space. Thus i'm wondering, is this intentional for some reason or just an oversight?