Re: [PATCH v2 0/6] batch tagging support: "notmuch tag --stdin"

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+From: David Bremner <david@tethera.net>\r
+To: Jani Nikula <jani@nikula.org>,\r
+       Jameson Graef Rollins <jrollins@finestructure.net>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH v2 0/6] batch tagging support: "notmuch tag --stdin"\r
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+References: <cover.1334404979.git.jani@nikula.org>\r
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+\r
+Jani Nikula <jani@nikula.org> writes:\r
+\r
+\r
+> I'm totally fine with modifying the proposed format (e.g. change "T" to\r
+> "tag", make things compatible with a future general batch mode), but to\r
+> be absolutely clear: I will not implement a general batch command\r
+> mode. \r
+\r
+I was thinking about the best way of making the interface extensible,\r
+and it might be better have a kind of modal interface, where some well\r
+defined escape at the beginning of the line introduces a mode switch.\r
+This has two apparent advantages: it avoids duplication of redundant\r
+information at the beginning of each line, and for input to a subcommand\r
+it could be optional.\r
+\r
+something like\r
+\r
+* tag\r
++foo +bar msg.id@blah\r
++glub -glog other.msg.id@blog\r
+\r
+vs\r
+\r
+* restore\r
+foo bar msg.id@blah\r
+glub glog other.msg.id@blog\r
+\r
+where a hypothetical general batch interface could take those two files\r
+concatenated together, and the "*" lines would be optional feeding to\r
+tag and restore respectively.\r
+\r
+I guess the current proposal is to have the restore format and tag\r
+format a bit closer\r
+\r
+* restore\r
++foo +bar msg.id@blah\r
++glub +glog other.msg.id@blog\r
+\r
+This looks like it would be a 2% space increase for my tags. I guess I\r
+could live with that. Another option would be to have the '+' be\r
+optional for tag as well; I suppose then tags starting with + would be\r
+ambiguous, which is probably a bad idea.\r
+\r
+d\r