I have asked a question to a friend in USA for which one should I use, here is his answer:
1. "Extended (\r, \n, \t, \x..., \0)"
2. "Extended (\n, \r, \t, \0, \x...)"
The ellipsis (three dots) means that the list does not show everything that could be shown.
If you mean that there are more items than what you can show, but you are listing just the most important ones, you want the second one.
The first one implies that you are following a certain order and that some items are not listed but that \0 is last, either in list order or importance. At least, that's what it looks like to me.
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