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+From: Mark Walters <markwalters1009@gmail.com>\r
+To: Jani Nikula <jani@nikula.org>, Carl Worth <cworth@cworth.org>,\r
+ Austin Clements <aclements@csail.mit.edu>\r
+Subject: Re: [PATCH 0/5] lib: make folder: prefix literal\r
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+Date: Thu, 30 Jan 2014 21:15:40 +0000\r
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+\r
+Dear Jani\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
+I think a boolean prefix sounds good. As you say there are lots of\r
+things we could do with a custom parser but I don't think its worth\r
+delaying things like this for it.\r
+\r
+I also think it's not worth aiming for something perfect, just "good\r
+enough". In a bike-shedding spirit I like the suggestion above (and on\r
+irc) of a path: prefix which is basically literal. Either ^ or a\r
+starting / to root the folder and a terminal $ or / to fix the end.\r
+\r
+(I don't have a preference between these: / avoids a clash with folder\r
+name with a $ or ^ in them but $ ^ are more familiar.)\r
+\r
+Best wishes\r
+\r
+Mark\r
+\r
+\r