code: function twTokenStrike(stream, state) {
  		var maybeEnd = false,
  			ch, nr;
  			
  		while (ch = stream.next()) {
  			if (ch == "-" && maybeEnd) {
  				state.tokenize = jsTokenBase;
  				break;
  			}
  			maybeEnd = (ch == "-");
  		}
  		return ret("text", "strikethrough");
  	}
docs: tw strike through text looks ugly change CSS if needed