Thu, 15 Oct 2009 15:53:33 +0200 wenzelm clarified File.platform_path vs. File.shell_path;
Thu, 15 Oct 2009 15:45:50 +0200 wenzelm exported File.shell_quote;
Thu, 15 Oct 2009 12:23:24 +0200 wenzelm misc tuning and recovery of Isabelle coding style;
Thu, 15 Oct 2009 11:49:27 +0200 wenzelm eliminated extraneous wrapping of public records;
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