Comment 9 for bug 1754455

There are release notes:
docs/RELEASE_NOTES_NEXT/marc_export_strip.adoc

On Thu, Mar 29, 2018 at 10:47 AM, Jason Stephenson <
<email address hidden>> wrote:

> I'm testing this with some export that I will need to do in May, and it
> occurred to me that an additional feature that would be nice to have,
> that this branch does not provide, would be to delete tags from the
> output based on subfield values. My main use case would be to delete 856
> tags where the subfield 9 is not for one of the libraries whose records
> I am exporting.
>
> I will add that feature and write ups some release notes, which this
> branch needs.
>
> ** Changed in: evergreen
> Assignee: (unassigned) => Jason Stephenson (jstephenson)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1754455
>
> Title:
> marc_export: want to delete fields/subfields
>
> Status in Evergreen:
> New
>
> Bug description:
> Wishlist
>
> LOC MARC specification for Bibliographic Records describes subcode 0
> thusly:
>
> "Subfield $0 contains the system control number of the related
> authority or classification record, or a standard identifier such as
> an International Standard Name Identifier (ISNI). These identifiers
> may be in the form of text or a Uniform Resource Identifier (URI). If
> the identifier is text, the control number or identifier is preceded
> by the appropriate MARC Organization code (for a related authority
> record) or the Standard Identifier source code (for a standard
> identifier scheme), enclosed in parentheses. When the identifier is
> given in the form of a Web retrieval protocol, e.g., HTTP URI, no
> preceding parenthetical is used.
>
> Subfield $0 may contain a URI that identifies a name or label for an
> entity. When dereferenced, the URI points to information describing
> that name. A URI that directly identifies the entity itself is
> contained in subfield $1.
>
> See MARC Code List for Organizations for a listing of organization
> codes and Standard Identifier Source Codes for code systems for
> standard identifiers. Subfield $0 is repeatable for different control
> numbers or identifiers."
>
> CWMARS -- and presumably other Evergreen users -- use subfield 0 in
> ways that (I presume) may impair data interchange. It would be useful
> if marc_export could optionally suppress the output of these
> subfields.
>
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