thread id specification

diff --git a/ac/512751a5a1eddf6063a681ec0ddf5548a188f4 b/ac/512751a5a1eddf6063a681ec0ddf5548a188f4
new file mode 100644 (file)
index 0000000..713d127
--- /dev/null
+++ b/ac/512751a5a1eddf6063a681ec0ddf5548a188f4
@@ -0,0 +1,91 @@
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+From: Rama <rama@fastmail.com.au>\r
+To: notmuch@notmuchmail.org\r
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+Subject: thread id specification\r
+Date: Thu, 09 Oct 2014 16:56:34 -0700\r
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+\r
+Can anyone in-the-know shed some light on how notmuch generates its\r
+thread ids? Until recently, I'd only seen numeric thread ids 16\r
+characters long, padded with zeroes. For example:\r
+\r
+thread:0000000000000001\r
+thread:0000000000000002\r
+thread:0000000000000005\r
+etc etc\r
+\r
+Today, several new threads were created with non numeric ids:\r
+\r
+thread:000000000000000d\r
+thread:000000000000000e\r
+thread:000000000000000f\r
+\r
+Is this normal behavior?\r
+\r
+--\r
+Rama\r
+\r
+\r
+\r