[Koha-devel] Should the first 3 digits of cn_sort be sorted for dewey decimal?

The documentation for GetClassSortKey says * Concatenates class and item part. * Converts to uppercase. * Removes leading and trailing whitespace and '/' * Separates alphabetic prefix from the rest of the call number * Splits into tokens on whitespaces and periods. * Leaves first digit group as is. ... this means that callnumbers 9.1 => 9_100000000000000 80.1 => 80_100000000000000 700.1 => 700_100000000000000 when sorted ascending by cn_sort 700.1 => 700_100000000000000 80.1 => 80_100000000000000 9.1 => 9_100000000000000 Shouldn't these be zero padded to 3 digits, so that they sort as follows? 009_100000000000000 080_100000000000000 700_100000000000000