That code was indeed a bit wacky, I fixed it up.

On Tue, 02 Jan 2018 23:25:48 +0100
ludo@gnu.org (Ludovic Courtès) wrote:

> Hi,
> 
> This is your friendly nitpicking bot!  ;-)
> 
> rhelling@mykolab.com (Rutger Helling) skribis:
> 
> >                                         "/bin/wine-preloader")
> > (string-append (assoc-ref %outputs "out")
> >                                         "/bin/wine-preloader"))
> > +             ;; Copy the missing man file for the wine binary from
> > wine-staging.
> > +             (system (string-append "gunzip < " (string-append
> > (assoc-ref
> > +                                    %build-inputs "wine-staging")
> > +                                    "/share/man/man1/wine.1.gz")
> > "> "
> > +                                    (string-append (assoc-ref
> > %outputs "out")
> > +                                    "/share/man/man1/wine.1")))
> >               #t))  
> 
> The indentation of the nested ‘string-append’ calls is misleading here
> (and the nested calls are unnecessary because ‘string-append’ is
> n-ary.)
> 
> Also, I think it’s OK to leave the file compressed (we have a man page
> compression phase anyway.)
> 
> Thanks!
> 
> Ludo’.