Filippo Argiolas <filippo.argiolas@gmail.com> writes:

 > Hi,
 >
 > I noticed that my `enable-theme-functions' hook always fires twice
 > after either a `load-theme' or a `enable-theme'.
 >
 > Problem is `enable-theme' in custom.el always also enables the user
 > theme to push it on top of the list.
 >
 > Is this desired?
 >
 > Technically I'd say it's correct, two enables spark two hooks, buyt
 > from the user point of view seems a counterintuitive side effect
 > without digging into the code.
 >
 > Filippo

I think it would be good to avoid it.  The attached patch does that.