Fri, 21 Apr 2017 18:57:30 +0200 afford unconditional all_known = true (reverting ea42dfd95ec8), for practical usability of qualified imports from arbitrary sessions;
wenzelm [Fri, 21 Apr 2017 18:57:30 +0200] rev 65541
afford unconditional all_known = true (reverting ea42dfd95ec8), for practical usability of qualified imports from arbitrary sessions;
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