Two tiny icons appear in the top left of a <CODE/> section when the mouse is over it; the one on the left does Copy All. If you click it, it switches briefly to say copied!
I then created a new sketch in the IDE and replaced the empty setup and loop by pasting. Your code compiled fine.
As explained earlier in the thread, somehow a Byte Order Mark got tacked onto the beginning of the file. The question is why. How did you start that sketch? Did you copy the code from somewhere? What OS are you using? Which browser?
The BOM is lost when copying the text from the file, which I'm guessing you did to paste it here (instead of hand-typing it manually).