Question on StringUtil.trim

[Maurice Amsellem]

Hi,

I have noticed that trim will return a copy of the string argument even if 
there are no spaces, instead of returning the original string.

public static function trim(str:String):String
{
...
     if (endIndex >= startIndex)
            return str.slice(startIndex, endIndex + 1);
        else
            return "";


Is that intended behavior (maybe for compatibility, or something ...)  ?

Maurice