[Koha-bugs] [Bug 11046] Better handling of uncertain years for publicationyear/copyrightdate

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=11046

--- Comment #19 from Marcel de Rooy <m.de.rooy at rijksmuseum.nl> ---
For documentation or release:

The patches of this report make that unknown publication/copyright years like
19.. or 19xx or 19XX or 19?? or 19--? (and similar forms) are interpreted as
1900 instead of 0 when saving copyrightdate (MARC21) or publicationyear
(UNIMARC).
These fields are so-called kohafields (fields extracted from the MARC record
and saved additionally in the database for optimization).
Since it is now possible to connect multiple MARC fields to one kohafield, you
can enter something like 1xxx or 201x into MARC21 fields like 260$c or 264$c.
When you save the record, the estimated publication year (1000 or 2010) will be
saved into the corresponding kohafield. This field is used for sorting lists
[virtual shelves] by copyrightdate among others.

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