If I have a buffer visiting one of my org-contacts files, say contacts.org,
and if I have turned on "column mode" in the buffer visiting contacts.org via org-columns ("C-x C-x C-c") then, when trying to tab-complete in a *Message* buffer To: George <tab> in the event that George identifies an entry in the file contacts.org, I get an error report in the minibuffer: Text is read-only: "Type `e' to edit property" If I quit column mode in the appropriate buffer, then tab-completion resumes working correctly. -- George McNinch <gmcninch(at)gmail.com> http://gmcninch.math.tufts.edu