Github user nickva commented on the issue:
https://github.com/apache/couchdb-chttpd/pull/144
@kxepal oh I see, sorry for confusion :-)
Yeah a list could have duplicates but that's not semantically terrible to
say feature_x is present then say it is present again. It is not the same as
saying a document with same ID got added to the database. Also a list is easier
to build and maintain in Erlang.
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