Re: [PATCH v2] util: Fix two corner-cases in boolean term quoting function

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+From: David Bremner <david@tethera.net>\r
+To: Austin Clements <amdragon@MIT.EDU>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH v2] util: Fix two corner-cases in boolean term quoting\r
+       function\r
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+References: <1394570520-23279-1-git-send-email-amdragon@mit.edu>\r
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+Date: Sat, 15 Mar 2014 15:24:48 -0300\r
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+Austin Clements <amdragon@MIT.EDU> writes:\r
+\r
+> Previously, make_boolean_term did not quote empty boolean terms or\r
+> boolean terms that started with '('.  These cases are incompatible\r
+> with Xapian: empty terms cannot be omitted, and boolean terms that\r
+> start with '(' trigger an alternate term quoting syntax.\r
+\r
+pushed,\r
+\r
+d\r