[notmuch] strange behavior of indexing of and searching for strings containing '[]'

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+From: Jameson Rollins <jrollins@finestructure.net>\r
+To: Notmuch Mail <notmuch@notmuchmail.org>\r
+Date: Fri, 05 Feb 2010 11:44:15 -0500\r
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+Subject: [notmuch] strange behavior of indexing of and searching for strings\r
+       containing '[]'\r
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+--=-=-=\r
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+Hey, folks.  I've been noticing some strange behavior of notmuch search\r
+results for strings containing '[]'.  Here are some searches for some\r
+exact strings in messages subjects:\r
+\r
+servo:~ 0$ notmuch search subject:'emacs paned UI'\r
+thread:533da424197bb6ba61a42b667d5d8d8f   Wed. 14:12 [2/2] Tad Fisher, Jame=\r
+son Rollins; [notmuch] Emacs paned UI ()\r
+servo:~ 0$=20\r
+\r
+So that's fine and expected.  This however is not:\r
+\r
+servo:~ 0$ notmuch search subject:'[notmuch] emacs paned UI'\r
+thread:5f2cb4b108773a39161b33c86e54f7fd  4 mins. ago [1/1] Jameson Rollins;=\r
+ [notmuch] loss of duplicate messages (inbox)\r
+servo:~ 0$=20\r
+\r
+Not only did it not turn up the message that *does* match that exact\r
+string in it's subject line, it actually turns up a completely different\r
+message that doesn't match the search term at all!\r
+\r
+This search actually turns up both:\r
+\r
+servo:~ 0$ notmuch search subject:'notmuch emacs paned UI'\r
+thread:5f2cb4b108773a39161b33c86e54f7fd  5 mins. ago [1/1] Jameson Rollins;=\r
+ [notmuch] loss of duplicate messages (inbox)\r
+thread:533da424197bb6ba61a42b667d5d8d8f   Wed. 14:12 [2/2] Tad Fisher, Jame=\r
+son Rollins; [notmuch] Emacs paned UI ()\r
+servo:~ 0$=20\r
+\r
+Which is again strange, because the second message does not at all match\r
+that search term.\r
+\r
+Does anyone have any idea what's going on here?  I think I saw mention\r
+of this issue on IRC somewhere, but I thought I should bring it up\r
+explicitly here.  This is definitely some buggy behavior.\r
+\r
+jamie.\r
+\r
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