On 2015-09-29, Stephen J. Turnbull <stephen(a)xemacs.org> wrote:
 If vc-git requires UTF-8, as your question appears to imply, then
 there is no "proper" way to use it in XEmacs 21.4.  un-define may work
 well enough, but as far as I know it's completely unsupported (I
 certainly won't touch it), and there is no other way to use utf-8 in
 XEmacs 21.4.
 If you're lucky there may be somebody around who can help debug
 problems with the Mule-UCS package, but my recommendation is to take
 this as a sign to move on to 21.5. 
Or if you're really wedded to 21.4, use JCBmacs :-)
http://homepages.inf.ed.ac.uk/jcb/Software/emacs/
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