Help With Old Addon - BagSort - Organize Guild Bank

I have been looking through the source of the addon BagSort, and toying around with it, the part where I am stuck is I just need to under stand how to do the ranges, I hope you guys can help, So I can get to work on it.

I have a few questions...
1:
sortBagRange({-1, 11, 10, 9, 8, 7, 6, 5})
This is the BANK range
How do you calculate this, I have not found any pattern. It must be by rows and columns.

2:
sortBagRange({4, 3, 2, 1, 0})
This is the bags you have,
This I can see a pattern, or think I do, correct me if I am wrong, the 4 3 2 1 and 0 I think has to do with the fact that your backpack, the non bag is 0, and 1 is the first bag 2 is the second etc.

If anyone with any knowledge about this could explain to me the range that are set up, I will probably be able to add a guild function.

Thanks for your time,
Chris

Not that I have coded addons at all, but going by your assumption in 2:, that same assumption can be made for the 7 bank bags that are available (thus 5 to 11).. the -1 is most likely a terminating string.

Yes, but as for the guild bank, This has tabs, and enormous amounts of space, And why a -1 in one and not the other. I shall test this theory. Though I don't think it will work with the guild bank. Just seems to simple and easy to me.

Not sure if you can code guild bank... Technically, it may be the -1 gets shifted over, and guild bank begins with 12, 13, etc... and then a -1 for termination.

Well, there has to be addon compatibility for the guild bank, which I know there is, because its all open to grab information from the game itself. But you may be right as in this method was used for the sole purpose of bags. But that raises the question to the normal bank, its first default slots are not bags, just a random mass of space, and this addon seems to sort with it also. So that just makes it even more confusing and interesting.