[Koha-bugs] [Bug 14287] Preserve valid ISBN-13 identifiers if they start with something else than 978

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=14287

--- Comment #13 from M. Tompsett <mtompset at hotmail.com> ---
(In reply to Jonathan Druart from comment #10)
> Please provide a test plan.
> 
> NormalizeISBN is used in some places and it's hard to imagine the side
> effects this patch could introduce.

Actually, GetNormalizedISBN is what is more broadly used. It calls
_isbn_cleanup which calls NormalizeISBN.

It would also seem that this is used to grab book covers using the ISBN-10.
Take Amazon for example.

https://www.amazon.com/Tolkiens-Failed-Quest-Michael-Jones/dp/1521406812/
That's an ISBN-10.

https://www.amazon.com/Apprenez-%C3%A0-programmer-2e-%C3%A9dition/dp/B006MV70GS/
That's an ASIN which is Amazon's own unique ID, because it is ISBN-13 only:
979-1090085008

But what about "The Hobbit"?
ISBN-13: 9780547928227
ISBN-10: 054792822X
https://www.amazon.com/Hobbit-J-R-Tolkien/dp/054792822X/

So, how are we supposed to grab Amazon covers?

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