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+From: David Bremner <david@tethera.net>\r
+To: notmuch@notmuchmail.org\r
+Subject: \r
+Date: Sun, 28 Sep 2014 20:28:16 +0200\r
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+\r
+Here's one approach to keeping config information at the library\r
+level.  IMHO, a key philosophical point is that this metadata is\r
+associated with a database, not with the library.\r
+\r
+Having every key map to a distinct file is arguably not as nice for\r
+humans to edit, but it avoids certain concurrency complications;\r
+e.g. glib can atomically write a keyfile (like we use for\r
+.notmuch-config), but that means e.g. the result of two concurrent\r
+updates to different keys is not a valid serialization.\r
+\r
+It won't be very efficient for huge numbers of keys, but for keeping\r
+some static metadata associated with a notmuch database, this should\r
+work ok.\r
+\r
+In addition to needing some polishing (documentation? what\r
+documentation?), this isn't actually used anywhere in notmuch.\r
+\r