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+Date: Fri, 12 Aug 2011 04:28:43 -0400\r
+From: Austin Clements <amdragon@MIT.EDU>\r
+To: Sebastian Spaeth <Sebastian@sspaeth.de>\r
+Subject: Re: [PATCH v2] emacs: bad regexp @ `notmuch-search-process-filter'\r
+Message-ID: <20110812082843.GB21339@mit.edu>\r
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+\r
+Quoth Sebastian Spaeth on Aug 12 at 10:07 am:\r
+> On Mon, 11 Jul 2011 17:05:32 -0400, Austin Clements <amdragon@MIT.EDU> wrote:\r
+> > So what would be a good format? One possibility would be to\r
+> > NULL-delimit the query part; as distasteful as I find that, this part\r
+> > of the search output isn't meant for user consumption. Though I fear\r
+> > this is endemic to the dual role the search output currently plays as\r
+> > both user and computer readable.\r
+> \r
+> Perhaps we take a queue from xargs and have a command line switch for \n\r
+> vs \0 output?\r
+> \r
+> --null\r
+> -- 0\r
+> Input items are terminated by a null character instead of by\r
+> whitespace, and the quotes and backslash are not special (every\r
+> character is taken lit- erally).\r
+\r
+This was one of the approaches I considered, but given that JSON\r
+parsing (with my optimized json.el) is nearly as fast as regexp-based\r
+parsing (which would also be the fastest way to parse \0-separated\r
+output) and is flexible, robust, and structured (unlike any simple\r
+delimited text format), I concluded we should just go with JSON. If\r
+we care about speed enough to introduce another format, I'd propose\r
+S-expressions over a new text format, since they double parsing\r
+performance compared to text, have the same structural benefits as\r
+JSON, and JSON and S-expressions could even share the same formatting\r
+code (so there's no chance of representation divergence).\r
+\r
+BTW, reviving the JSON search parser is on my shortlist. I should\r
+also bundle up my optimized json.el, since it should seriously boost\r
+the performance of notmuch-show, too.\r
projects / notmuch-archives.git / commitdiff