> echo "(setq default-frame-alist '((fullscreen . fullheight)))" > /tmp/foo.el
 > emacs -Q --daemon -l /tmp/foo.el
 > emacsclient -c -n
 >
 > Using the above recipe, I get a frame width of 78 characters instead of
 > 80 characters.  The information from (window--frame-dump) is as follows:

Thanks.  I haven't looked into your recipe yet.  Does the attached patch
improve anything?  If it doesn't apply right away just tell me and don't
bother any further.  I'm working on this problem currently and have
found a couple of related issues.

martin