Re: [PATCH 0/5] lib: make folder: prefix literal

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+From: David Bremner <david@tethera.net>\r
+To: Jani Nikula <jani@nikula.org>, Austin Clements <aclements@csail.mit.edu>, \r
+       notmuch@notmuchmail.org\r
+Subject: Re: [PATCH 0/5] lib: make folder: prefix literal\r
+In-Reply-To: <87iot8f4vg.fsf@nikula.org>\r
+References: <cover.1389304779.git.jani@nikula.org>\r
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+Date: Sat, 25 Jan 2014 12:58:25 -0400\r
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+Jani Nikula <jani@nikula.org> writes:\r
+\r
+> On Sat, 25 Jan 2014, Jani Nikula <jani@nikula.org> wrote:\r
+>> Perhaps we need to have two prefixes, one of which is the literal\r
+>> filesystem folder and another which hides the implementation details,\r
+>> like I mentioned in my mail to Peter [1]. But consider this: my proposed\r
+>> implementation does cover *all* use cases.\r
+>\r
+> Here's a thought. With boolean prefix folder:, we can devise a scheme\r
+> where the folder: query defines what is to be matched.\r
+>\r
+> For example:\r
+>\r
+> folder:foo   match files in foo, foo/new, and foo/cur.\r
+> folder:foo/  match all files in all subdirectories under foo (this\r
+>              would handle Tomi's use case), including foo/new and\r
+>               foo/cur.\r
+\r
+handling hierarchies sounds useful and natural\r
+\r
+> folder:foo/. match in foo only, and specifically not in foo/cur or foo/new.\r
+> folder:foo/new  match in foo/new, and specifically not in foo/cur (this\r
+>              allows distinguishing between messages in cur and new).\r
+\r
+is "new" special cased here? or do you rely on it being a leaf\r
+directory?\r
+\r
+> folder:/     match everything.\r
+> folder:/.    match in top level maildir only.\r
+> folder:""    match in top level maildir, including cur/new.\r
+\r
+I could certainly support this UI, assuming the database bloat is not\r
+too bad.\r
+\r
+I started to wonder about using 3 prefixes instead, but then I read your\r
+message again and a light went on. ;).\r
+\r
+d\r
+\r