Wed, 18 Mar 2020 20:04:50 +0100 wenzelm slightly more explicit error, without going into the graph of proof futures;
Wed, 18 Mar 2020 18:06:36 +0100 wenzelm more robust re-use of $ISABELLE_TMP_PREFIX (amending c1597167563e);
Wed, 18 Mar 2020 17:44:27 +0100 wenzelm prefer strict qualification (default for 'interpretation', see 461ee3e49ad3) as proposed by Pedro Sánchez Terraf;
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