def item_trace(e):
"""
produces a compact subset of the information in a
news item suitable for summary or preview. html is
stripped and long fields are trimmed.
"""
trace = Dibject()
trace.timestamp = find_best_timestamp(e) or datetime.utcnow()
trace.title = stripped_content(e.get('title_detail', None), 128)
trace.author = trimmed(find_author_name(e), 128)
trace.link = find_best_permalink(e)
source = e.get('source', {})
trace.source_url = find_source_url(source)
trace.source_title = stripped_content(source.get('title_detail', None), 128)
content = e.get('content', [None])[0]
if content is None:
content = e.get('summary_detail', None)
trace.summary = stripped_content(content, 256)
return trace
