Re: Undo tag operation?

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+Date: Wed, 20 Jul 2011 22:02:47 +0200\r
+From: Olivier Schwander <olivier.schwander@chadok.info>\r
+To: Jameson Graef Rollins <jrollins@finestructure.net>\r
+Subject: Re: Undo tag operation?\r
+Message-ID: <20110720200247.GB24284@ns27638.ovh.net>\r
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+Le 20 Jul 2011 09:48, Jameson Graef Rollins a écrit:\r
+> On Wed, 20 Jul 2011 16:17:37 +0200, Alex Ghitza <aghitza@gmail.com> wrote:\r
+> > I just inadvertently removed the "todo" tag from all my "todo"-tagged\r
+> > emails (about 60 of them going back several months, so I doubt I can\r
+> > find them all again in my email haystack).  So I have a few questions:\r
+> \r
+> Hey, Alex.  This won't help you now, and doesn't really answer your\r
+> questions either, but you should periodically back up your tags with the\r
+> "dump" command.  If you had a dumpfile backup of the tags you could\r
+> restore with "restore".  hth (for the future).\r
+\r
+I wonder if it may be possible to create a journal of all the operations\r
+on tags: a file where all the changes are registered, with a timestamp.\r
+\r
+Two benefits:\r
+ - going through the history to undo mistakes\r
+ - being able to build a diff of two journals in order to synchronize db on multiple\r
+   hosts\r
+\r
+A drawback may be to slow down the changes on tags, since we add one more write\r
+each time a tag is added or removed.\r
+\r
+Olivier\r