inveniosoftware/invenio — pull request #2474 by dset0x (2014-10-29 15:57:53+00:00)
Title: BibCheck: allow filtering by subfield contents

* Add optional argument `subfield_filter` to `iterfields()` method that
accepts a (code, value) pair. If a code is passed then only fields
matching this pair will be yielded.

Co-Authored-By: Kirsten Sachs