Good afternoon all, 
I am having some issues with hg performing an update, it wants to use vimdiff and this is not the way I like to work. According to the mercurial simply placing the folloing in the ~/.hgrc  should make mercurial change back to leaving the >>>> <<<<< marks when it cannot resolve something. Whatever I specify it still runs vimdiff. 
[ui]
ui.merge = internal:merge
any suggestions would be greatly received. 
Thanks 
Michael. 
PS, a little more info on the version of HG I am using.  
galaxy@jic55666:~/software/galaxy-central$ hg --version
Mercurial Distributed SCM (version 1.6.4)