Feed new data to the Parser.HTML
object. This will start a scan and may result in
callbacks. Note that it's possible that all
data feeded isn't processed - to do that, call
finish ().
If the function is called without arguments,
no data is feeded, but the parser is run.
If the string argument is followed by a 0,
->feed(s,0);, the string is feeded,
but the parser isn't run.