Subject: bug#3400: bug in add-text-properties

From: martin rudalics <[email-masked]>
Date: Sat, 30 May 2009 12:12:51 +0200

> Hmm.  It seems to be a problem with the `intangible' property.  If I
 > remove it, C-a works correctly.  I'll try a newer Emacs version; maybe
 > this problem has vanished meanwhile.

It's not necessarily related to the intangible property.  Have a
look at the thread starting with

http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg00601.html

martin