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-rw-r--r--NEWS18
1 files changed, 17 insertions, 1 deletions
diff --git a/NEWS b/NEWS
index 3383ecfb..184bd0e0 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,22 @@
-Notmuch 0.17~rc1 (2013-11-20)
+Notmuch 0.17~rc2 (2013-xx-yy)
=============================
+Incompatible change in SHA1 computation
+---------------------------------------
+
+Previously on big endian architectures like sparc and powerpc the
+computation of SHA1 hashes was incorrect. This meant that messages
+with overlong or missing message-ids were given different computed
+message-ids than on more common little endian architectures like i386
+and amd64. If you use notmuch on a big endian architecture, you are
+strongly advised to make a backup of your tags using `notmuch dump`
+before this upgrade. You can locate the affected files using something
+like:
+
+ notmuch dump | \
+ awk '/^notmuch-sha1-[0-9a-f]{40} / \
+ {system("notmuch search --exclude=false --output=files id:" $1)}'
+
Command-Line Interface
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