public String diff_toDelta(LinkedList<Diff> diffs) {
		StringBuilder text = new StringBuilder();
		for (Diff aDiff : diffs) {
			switch (aDiff.operation) {
			case INSERT:
				try {
					text.append("+").append(URLEncoder.encode(aDiff.text, "UTF-8")
							.replace('+', ' ')).append("\t");
				} catch (UnsupportedEncodingException e) {
					// Not likely on modern system.
					throw new Error("This system does not support UTF-8.", e);
				}
				break;
			case DELETE:
				text.append("-").append(aDiff.text.length()).append("\t");
				break;
			case EQUAL:
				text.append("=").append(aDiff.text.length()).append("\t");
				break;
			}
		}
		String delta = text.toString();
		if (delta.length() != 0) {
			// Strip off trailing tab character.
			delta = delta.substring(0, delta.length() - 1);
			delta = unescapeForEncodeUriCompatability(delta);
		}
		return delta;
	}