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+ Wed, 29 Jan 2014 22:34:34 -0800 (PST)\r
+From: Jani Nikula <jani@nikula.org>\r
+To: Carl Worth <cworth@cworth.org>, Austin Clements <aclements@csail.mit.edu>\r
+Subject: Re: [PATCH 0/5] lib: make folder: prefix literal\r
+In-Reply-To: <87bnyuqw60.fsf@yoom.home.cworth.org>\r
+References: <cover.1389304779.git.jani@nikula.org>\r
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+Date: Thu, 30 Jan 2014 07:34:24 +0100\r
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+\r
+On Wed, 29 Jan 2014, Carl Worth <cworth@cworth.org> wrote:\r
+> Austin Clements <aclements@csail.mit.edu> writes:\r
+>> I think you're assuming we have much more control over this than we\r
+>> do.\r
+>\r
+> To be fair, I only started discussing my proposal for '^' and '$' in\r
+> response to Jani's proposal with special semantics for trailing '/' and\r
+> "/.".\r
+\r
+I only chose those to avoid any collisions with actual file names,\r
+without much further thought. I'm not a fan of rsync's trailing '/'\r
+semantics either. The main point was to demonstrate that if folder: were\r
+a boolean prefix, it would be possible to index folder terms in a way\r
+that would address the issues with the current folder: prefix.\r
+\r
+I don't have good counter-proposals now, but an *example* is having\r
+"sub-prefixes" like "folder:recursive::foo" or "folder:maildir::bar",\r
+where the former would match anything under foo and the latter would\r
+match anything in bar/new and bar/cur. These "recursive::" and\r
+"maildir::" prefixes would be just part of the indexed boolean terms.\r
+\r
+> Support for any of this magic syntax would require a custom query\r
+> parser, yes.\r
+>\r
+> Austin, haven't you been proposing a custom query parser for ages? Where\r
+> does that work stand now?\r
+\r
+That is the unicorn... many of the query improvements I have in mind\r
+depend on a custom query parser. So I'd like to have that. And a\r
+pony. But in the mean time, I'm left wondering whether I should pursue\r
+folder: as a boolean prefix, or try to figure out if there are\r
+improvements to be made as a probabilistic prefix, or just put this work\r
+on hold. With the db upgrade and upgrade tests, it's not exactly a\r
+trivial amount of work.\r
+\r
+BR,\r
+Jani.\r
projects / notmuch-archives.git / commitdiff