Dear Experts,

There seems to be a bug in the tags feature for clock tables. When I try to
generate a dynamic block for a clock-table in the following example file it
goes into an infinite loop.

*** 2010-08-04 Wednesday

This illustrates a bug in org-clock.el. When you Do C-c C-x C-r using
org-mode version 7.01g on Windows of GNU Emacs 23.1.1
(i386-mingw-nt5.1.2600) of 2009-07-30 on SOFT-MJASON.

#+BEGIN: clocktable :maxlevel 8 :scope subtree :tags "{DAILY}"

#+END:

**** TODO PLAN <2010-08-04 Wed>
                         :PLAN:DAILY:
         SCHEDULED: <2010-08-04 Wed 09:20-09:40>
         CLOCK: [2010-08-04 Wed 09:20]--[2010-08-04 Wed 09:31] =>  0:11

**** foo
         SCHEDULED: <2010-08-04 Wed 08:30-09:20>
         CLOCK: [2010-08-04 Wed 08:30]--[2010-08-04 Wed 09:30] =>  1:00