From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johnny <yggdrasil@gmx.co.uk>
Subject: Column view odd behaviour on emptying field
Date: Tue, 31 May 2011 23:00:10 +0100
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I am trying to learn the org-taskjuggler mode and following the tutorial
on http://orgmode.org/worg/org-tutorials/org-taskjuggler.html. Another
great feature of org-mode! 

Anyhow, this uses Column View extensive, and I noticed a strange
behaviour if setting a column field and subsequently emptying it. It
seems the property remains, but is blanked and thus disabled, and when
setting the property again to an allowed value, a new property field is
created. The propery is not displayed in column view, presumably because
of the remaining broken (empty) property from the previous erase.

1) Property set
*** Database coupling
    :PROPERTIES:
    :Effort:   20.0
    :allocate: doc
    :END:

2) Property cleared 
*** Database coupling
    :PROPERTIES:
    :Effort:   20.0
    :allocate: 
    :END:

3) Property set again
*** Database coupling
    :PROPERTIES:
    :Effort:   20.0
    :allocate: 
    :allocate: test
    :END:

Regards,
-- 
Johnny