public static int findWordStart(String line, int pos, String noWordSep)
	{
		char ch = line.charAt(pos - 1);

		if(noWordSep == null)
			noWordSep = "";
		boolean selectNoLetter = (!Character.isLetterOrDigit(ch)
			&& noWordSep.indexOf(ch) == -1);

		int wordStart = 0;
		for(int i = pos - 1; i >= 0; i--)
		{
			ch = line.charAt(i);
			if(selectNoLetter ^ (!Character.isLetterOrDigit(ch) &&
				noWordSep.indexOf(ch) == -1))
			{
				wordStart = i + 1;
				break;
			}
		}

		return wordStart;
	}