// this is actually not correct, but the closest we can get (will work (999-99)/999 * 100 % of the time ;-)
'character to escape character sequences, where as moment.js uses brackets
]. This method converts these different escape characters. A special case is
''which is covered by the token conversion (as it shows up as a single
'in a SimpleDateFormat formatted date.
othe index of the quote beginning a quoted block
cthe index of the quote closing a quoted block
strthe string builder containing the pattern