avoid "exec" to change the winpid;

clarified check of root process on Windows (NB: the winpid is less stable than the Cygwin/Posix pid, so it needs to be "patched" into the the bash script, instead of bash_process.c);

fast approximation of test for process group (NB: initial process might already be terminated, while background processes are still running);

clarified signature;

rebuild executable for x86_64-darwin;

clarified command-line;

update Linux base-line;

tuned comments;

tuned signature;

simplified typesetting of \<guillemotleft>...\<guillemotright>;

collecting more lemmas concerning multisets

proper use of antiquotations;

more documentation on "Conversions";

tuned

updated example;

clarified options (again);

more options: update ISABELLE_IDENTIFIER;

clarified conditional ML;

support for conditional ML text;

updated example;

clarified options;

proper context variable handling when stripping leadings quantifiers from test goals

proper etc/ISABELLE_ID from archive (amending 4cba4e250c28);

eliminated perl: prefer elementary GNU printenv;

more robust bootstrap of components;

more self-contained support for macOS;

misc tuning and clarification;

tuned signature;

support for base64 via Isabelle/Scala/ML;

compile;

clarified signature: avoid overlap of String vs. Bytes (both are CharSequence);

clarified signature (again);