Add "Show idendica icon with new dents" archive post

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+I've written this a while ago after I found out how images can be
+added to the emacs modeline. I like being notified of things that go
+on, and new dents is a good example of this, though `notify-send` and
+an urgency hint don't always work for that.
+
+This works:
+
+[[!format el """
+(add-to-list
+ 'global-mode-string
+ '(:eval
+   (unless (zerop identica-new-dents-count)
+     (propertize " " 'display identica-active-indicator-image))))
+"""]]
+
+This will show an icon in your modeline whenever there are new dents,
+at this time there dents will not have been loaded into the buffer, so
+you'll have to refresh it, after which the icon disappears.
+
+[[!meta date="2012-05-02 21:36:00"]]
+[[!tag emacs elisp identica mode-line icon coding]]