Re: [PATCH 6/7] emacs: hello: add highlight newly arrived messages option

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+To: Mark Walters <markwalters1009@gmail.com>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH 6/7] emacs: hello: add highlight newly arrived messages\r
+       option\r
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+From: David Edmondson <dme@dme.org>\r
+Date: Mon, 12 May 2014 14:58:28 +0100\r
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+--=-=-=\r
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+\r
+On Sun, May 11 2014, Mark Walters wrote:\r
+> This adds a function that highlights searches which have newly arrived\r
+> messages (ones which arrived since the previous refresh of\r
+> notmuch-hello). It does that by getting a full list of matching\r
+> message ids and checking whether any new messages have appeared. Thus\r
+> it will be slow on large saved searches.\r
+> ---\r
+>  emacs/notmuch-hello.el |   21 +++++++++++++++++++++\r
+>  1 file changed, 21 insertions(+)\r
+>\r
+> diff --git a/emacs/notmuch-hello.el b/emacs/notmuch-hello.el\r
+> index 28e16be..265b879 100644\r
+> --- a/emacs/notmuch-hello.el\r
+> +++ b/emacs/notmuch-hello.el\r
+> @@ -96,6 +96,8 @@ (define-widget 'notmuch-saved-search-plist 'list\r
+>                                  (const :tag "Default (messages)" nil)\r
+>                                  (function-item :tag "messages/threads"\r
+>                                                 notmuch-hello-display-count-threads-and-messages)\r
+> +                                (function-item :tag "highlight newly arrived messages"\r
+> +                                               notmuch-hello-display-new-messages)\r
+>                                  function)))))\r
+>=20=20\r
+>  (defcustom notmuch-saved-searches '((:name "inbox" :query "tag:inbox")\r
+> @@ -507,6 +509,25 @@ (defun notmuch-hello-display-count-threads-and-messa=\r
+ges (&rest args)\r
+>                        (notmuch-hello-nice-number threads))))\r
+>      (plist-put current :count display)))\r
+>=20=20\r
+> +(defun notmuch-hello-display-new-messages (&rest args)\r
+> +  "Highlight saved searches which have new messages.\r
+> +\r
+> +New messages are ones which have appeared since the last time\r
+> +notmuch hello was refreshed. This will be slow on large queries."\r
+> +  (let* ((current (plist-get args :current))\r
+> +     (old (plist-get args :old))\r
+> +     (query (plist-get current :query))\r
+> +     (name (plist-get current :name))\r
+> +     (new-list (notmuch-call-notmuch-sexp "search"\r
+> +                                          "--output=3Dmessages"\r
+> +                                          "--format=3Dsexp"\r
+> +                                          query))\r
+> +     (old-list (plist-get old :message-list)))\r
+> +    (unless (subsetp new-list old-list :test 'equal)\r
+> +      (plist-put current :name (propertize name 'face '(:foreground "red=\r
+"))))\r
+> +    (plist-put current :count (notmuch-hello-nice-number (length new-lis=\r
+t)))\r
+> +    (plist-put current :message-list new-list)))\r
+\r
+I wonder if it would be better to store a hash value derived from the\r
+message list rather than the list itself. The list could be large.\r
+\r
+> +\r
+>  (defun notmuch-hello-batch-message-count (elem-plist options)\r
+>    "Update the message count for a saved search.\r
+>=20=20\r
+> --=20\r
+> 1.7.10.4\r
+>\r
+> _______________________________________________\r
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