Re: [notmuch] Idea for storing tags

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+From: Carl Worth <cworth@cworth.org>\r
+To: Scott Morrison <smorr@indev.ca>, mailtags discussion list\r
+       <mailtags@lists.madduck.net>\r
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+Date: Wed, 13 Jan 2010 17:37:51 -0800\r
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+Cc: notmuch discussion list <notmuch@notmuchmail.org>\r
+Subject: Re: [notmuch] Idea for storing tags\r
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+--=-=-=\r
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+On Wed, 13 Jan 2010 00:39:14 -0500, Scott Morrison <smorr@indev.ca> wrote:\r
+> > Maybe a better approach would be content addressing (see below).\r
+>=20\r
+> Content hashing -- good Idea (& not something that has hit me before)\r
+> -- better than Message-Id as I believe there are still some MUA /MTAs\r
+> that allow messages without message ids.  The only potential issue\r
+> with this is that it is critical then to preserve the message source\r
+> against encoding changes though that shouldn't be too hard to avoid.\r
+\r
+Another problem with content-based naming for messages is that most of\r
+the messages in my mail store that I consider duplicates don't actually\r
+have identical content. (One is sent directly to me via CC and the other\r
+is sent by the mailing-list software *after* appending a footer to the\r
+message.)\r
+\r
+That said, notmuch already does use a sha-1 sum as the message\r
+identifier for any message that does not have a valid Message-ID\r
+header. So there's definitely a place for this.\r
+\r
+=2DCarl\r
+\r
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