Sun, 28 Feb 2021 21:31:35 +0100 wenzelm more robust (amending 87403fde8cc3): notably allow symlink to existing directory, which Files.createDirectories does not accept;
Sat, 27 Feb 2021 22:17:56 +0100 wenzelm more Isabelle/ML/Scala operations;
Sat, 27 Feb 2021 21:36:58 +0100 wenzelm more Isabelle/ML/Scala operations;
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