Re: [PATCH 9/9] add has: query prefix to search for specific properties

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+ Sat, 06 Aug 2016 14:18:53 -0000\r
+From: David Bremner <david@tethera.net>\r
+To: notmuch@notmuchmail.org\r
+Cc: Daniel Kahn Gillmor <dkg@fifthhorseman.net>, Jani Nikula <jani@nikula.org>\r
+Subject: Re: [PATCH 9/9] add has: query prefix to search for specific\r
+ properties\r
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+Date: Sat, 06 Aug 2016 23:18:53 +0900\r
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+David Bremner <david@tethera.net> writes:\r
+\r
+>  \r
+> +The **has:** prefix searches for messages with a particular\r
+> +<key>=<value> property pair. Properties are used internally by notmuch\r
+> +(and extensions) to add metadata to messages. A given key can be\r
+> +present on a given message with several different values.\r
+> +\r
+\r
+I probably should have added to the commit message that this\r
+documentation is intentionally minimal, because it's not intended for\r
+people creating properties; that should go in API documentation, I think.\r
+\r
+\r
+> +    { "has",                        "XPROPERTY" },\r
+>      /*\r
+>       * Without the ":", since this is a multi-letter prefix, Xapian\r
+>       * will add a colon itself if the first letter of the path\r
+\r
+I don't really understand the comment on the next line (since it seems\r
+that no : is added to XPROPERTY by Xapian), but I guess we should\r
+probably be consistent. Maybe Jani can explain the comment?\r
+\r
+d\r