/usr/share/zsh/5.5.1/functions
Edit: /usr/share/zsh/5.5.1/functions/_arch_archives (413B)
#autoload
local ARCHCMD="$1"
shift
local expl completions library name_arg='-n'
if [[ -n $argv[(r)--library] ]]; then
library='library-'
# remove parameter from $@ before calling compadd
argv[(r)--library]=()
name_arg=
fi
completions=($(_call_program ${ARCHCMD} ${ARCHCMD} ${library:-}archives $name_arg))
_description -V archives expl "${library:-}archives"
compadd "$@" "$expl[@]" -- "$completions[@]"