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+ Sat, 06 Sep 2014 09:22:16 -0700 (PDT)\r
+From: Mark Walters <markwalters1009@gmail.com>\r
+To: notmuch@notmuchmail.org\r
+Subject: [Patch v2 1/2] emacs: show: document the mark unread defcustom\r
+ function\r
+Date: Sat, 6 Sep 2014 17:22:10 +0100\r
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+\r
+---\r
+ emacs/notmuch-show.el | 8 +++++++-\r
+ 1 file changed, 7 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el\r
+index 7549fbb..5695d95 100644\r
+--- a/emacs/notmuch-show.el\r
++++ b/emacs/notmuch-show.el\r
+@@ -224,7 +224,13 @@ For example, if you wanted to remove an \"unread\" tag and add a\r
+ :group 'notmuch-show)\r
+ \r
+ (defcustom notmuch-show-mark-read-function #'notmuch-show-seen-current-message\r
+- "Function to control which messages are marked read."\r
++ "Function to control which messages are marked read.\r
++\r
++The function should take two arguments START and END which will\r
++be the start and end of the visible portion of the buffer and\r
++should mark the appropriate messages read by applying\r
++`notmuch-show-mark-read'. This function will be called after\r
++every user interaction with notmuch."\r
+ :type 'function\r
+ :group 'notmuch-show)\r
+ \r
+-- \r
+1.7.10.4\r
+\r