Elements get dropped from feed items with repeated nested elements

[akuanti]

Because feedparser constructs entries as flat dictionaries, any repeated elements can get clobbered, even if they are nested in separate elements.

For example, the following example feed repeats <bc:name> under <bc:location> and <bc:contact>:

<?xml version="1.0" encoding="UTF-8" ?>

<rss version="2.0" xmlns:bc="http://example.com/rss">
  <channel>
    <title>Posts</title>
    <description>RSS feed</description>
    <link>https://example.com/feed</link>
    <language>en-us</language>
    <lastBuildDate>Fri, 13 Jul 2018 01:15:06 +00:00</lastBuildDate>
    <generator uri="https://www.example.com" version="1.0">Example</generator>
      <item>
        <title>Title</title>
        <description><![CDATA[Some description]]></description>
        <link>https://example.com/posts</link>
        <guid>https://example.com/posts/123</guid>
        <bc:location>
          <bc:name>Location name</bc:name>
        </bc:location>
        <bc:contact>
          <bc:name>Contact name</bc:name>
        </bc:contact>
      </item>
  </channel>
</rss>

Parsing it with feedparser.parse() results in the following (notice that the <bc:name> element with "Location name" is missing from entries):

{'bozo': 0,
 'encoding': 'utf-8',
 'entries': [{'bc_contact': '',
              'bc_location': '',
              'bc_name': 'Contact name',
              'guidislink': False,
              'id': 'https://example.com/posts/123',
              'link': 'https://example.com/posts',
              'links': [{'href': 'https://example.com/posts',
                         'rel': 'alternate',
                         'type': 'text/html'}],
              'summary': 'Some description',
              'summary_detail': {'base': '',
                                 'language': None,
                                 'type': 'text/html',
                                 'value': 'Some description'},
              'title': 'Title',
              'title_detail': {'base': '',
                               'language': None,
                               'type': 'text/plain',
                               'value': 'Title'}}],
 'feed': {'generator': 'Example',
          'generator_detail': {'href': 'https://www.example.com',
                               'name': 'Example',
                               'version': '1.0'},
          'language': 'en-us',
          'link': 'https://example.com/feed',
          'links': [{'href': 'https://example.com/feed',
                     'rel': 'alternate',
                     'type': 'text/html'}],
          'subtitle': 'RSS feed',
          'subtitle_detail': {'base': '',
                              'language': None,
                              'type': 'text/html',
                              'value': 'RSS feed'},
          'title': 'Posts',
          'title_detail': {'base': '',
                           'language': None,
                           'type': 'text/plain',
                           'value': 'Posts'},
          'updated': 'Fri, 13 Jul 2018 01:15:06 +00:00',
          'updated_parsed': None},
 'namespaces': {'bc': 'http://example.com/rss'},
 'version': 'rss20'}

This does not seem correct to me. I expect the representation of the RSS feed not to delete elements, but maybe there is some part of the RSS spec that says that elements cannot be repeated?