Hi,
call numbers having Cutter parts made of several substrings currently are
not sorted correctly. Here are examples:
| itemcallnumber | cn_source | cn_sort |
| 530 F435 1996 v1 | ddc | 530_F435_199600000000000_V1 |
| 530 F435 1996 v2p1 | ddc | 530_F435_199600000000000_V2P1 |
| 530 F435 1996 v2p2 | ddc | 530_F435_199600000000000_V2P2 |
Despite being in the Dewey 530 class, these items are sorted after any
530.xy item (and before any 531, which is OK).
I suspect this has to do with the additional space separators: more than
one seem to be too many.
Any hint? What is the actual algorithm used by Koha to evaluate the
cn_sort field (within the ddc scheme)? Grouping, or even merging, all the
subfields after the Dewey into one single string was of no help.
Many thanks and best regards,
Giuseppe.
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