Example broken MARC XML

README.md

Note the datafields cannot be nested:

https://gist.github.com/miku/ea779a221d00b5524fcd#file-test-xml-L37

This yields to yaz_marc_read_xml kind of error:

$ yaz-marcdump -i marcxml -o marc test.xml
yaz_marc_read_xml failed

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<marc:record xmlns:marc="http://www.loc.gov/MARC21/slim">
  <marc:leader>     ndm  22     uu 4500</marc:leader>
  <marc:controlfield tag="001">666902020</marc:controlfield>
  <marc:controlfield tag="005">20100929132707.8</marc:controlfield>
  <marc:controlfield tag="008">201009|        x||||a |||||||||||  f||</marc:controlfield>
  <marc:datafield tag="040" ind1=" " ind2=" ">
    <marc:subfield code="a">ZJS</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="245" ind1="1" ind2="0">
    <marc:subfield code="a">Épithalame</marc:subfield>
    <marc:subfield code="c">Léo Delibes ; poésie d'Édouard Grenier.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="240" ind1="1" ind2="0">
    <marc:subfield code="a">Mélodies</marc:subfield>
    <marc:subfield code="n">2. recueil. arr</marc:subfield>
    <marc:subfield code="p">Épithalame; arr</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="100" ind1="1" ind2=" ">
    <marc:subfield code="a">Delibes, Léo</marc:subfield>
    <marc:subfield code="d">1836-1891</marc:subfield>
    <marc:subfield code="e">creator</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="700" ind1="1" ind2=" ">
    <marc:subfield code="a">Grenier, Édouard</marc:subfield>
    <marc:subfield code="d">1819-1901</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="046" ind1=" " ind2=" ">
    <marc:subfield code="k">1887</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="260" ind1=" " ind2=" ">
    <marc:subfield code="g">1887</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="300" ind1=" " ind2=" ">
    <marc:subfield code="a">1 ms. score (25 leaves) ; 36 cm.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="650" ind1="1" ind2=" ">
    <marc:subfield code="a">Songs (Medium voice) with orchestra</marc:subfield>
    <marc:datafield tag="655" ind1=" " ind2="7">
      <marc:subfield code="a">Scores</marc:subfield>
    </marc:datafield>
  </marc:datafield>
  <marc:datafield tag="650" ind1="1" ind2=" ">
    <marc:subfield code="a">Wedding music</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="600" ind1="1" ind2=" ">
    <marc:subfield code="a">Grenier, Édouard</marc:subfield>
    <marc:subfield code="d">1819-1901</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="510" ind1=" " ind2=" ">
    <marc:subfield code="a">
            
               RISM series A/II,
            
         </marc:subfield>
  </marc:datafield>
  <marc:datafield tag="787" ind1="0" ind2=" "/>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Holograph, signed, in black ink.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">For baritone voice with acc. arr. for orchestra; originally for medium voice and piano.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">At end: Léo Delibes Choisy-au-bac 17 Nov'bre 87.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">"Pour le mariage de mon ami J. Léon."</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Includes corrections and other markings throughout in hand of composer, primarily in black ink, with some in blue crayon.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Paginated in blue crayon.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Somewhat discolored and stained, especially t.p., with some worn edges; t.p. folded to enclose leaves of score.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Watermark at top right corner of t.p. and some leaves: Lard Esnault Paris 25, Rue Feydeau.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">On bottom right of blank leaf at end: Mr. Pothier, 31, rue La Bruyère.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Juilliard Manuscript Collection, Lila Acheson Wallace Library, The Juilliard School.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Gift; Bruce Kovner; 2006.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">French words.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="500" ind1=" " ind2=" ">
    <marc:subfield code="a">Purchased at auction held by Sotheby's, London May 25, 2001, lot 75.</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="856" ind1=" " ind2=" ">
    <marc:subfield code="u">http://library.juilliard.edu/record=b1130997</marc:subfield>
    <marc:subfield code="3">Juilcat bibliographic record</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="856" ind1=" " ind2=" ">
    <marc:subfield code="u">http://www.juilliardmanuscriptcollection.org/composers.php#/hires/DELI/DELI_EPIT</marc:subfield>
    <marc:subfield code="3">Electronic resource</marc:subfield>
  </marc:datafield>
  <marc:datafield tag="506" ind1=" " ind2=" ">
    <marc:subfield code="a">Restricted access; Apply; Library Director.</marc:subfield>
  </marc:datafield>
</marc:record>