#autoload

# a separated list where each component of the list uses the same
# function.

# -n num : number of items in list [default is unlimited]
# -s sep : specify separator [defaults to comma]
# -d     : duplicate values allowed

local curcontext="$curcontext" nm="$compstate[nmatches]" pre nosep minus
local -a sep num pref suf end uniq dedup

zparseopts -D -a opts s:=sep n:=num p:=pref i:=pref P:=pref I:=suf S:=suf q=suf r:=suf R:=suf C:=cont d=uniq M: J: X: x:
(( $#cont )) && curcontext="$curcontext%:*}:$cont[2]"
(( $#sep )) || sep[2]=,

if (( $+suf[(r)-S] )); then
  end="${(q)suf[suf[(i)-S]+1]}"
  (( $#end )) && compset -S ${end}\* && suf=() && nosep=1
fi

if (( ! $#uniq )); then
  (( $+pref[(r)-P] )) && pre="${(q)pref[pref[(i)-P]+1]}"
  typeset -T unique="${PREFIX#$pre}" uniq $sep[2]
  dedup=( ${(q)uniq[1,-2]} )
  unique="${SUFFIX}"
  dedup+=( ${(q)uniq[2,-1]} )
fi

if (( ! $#num )) || (( num[2] > 1 )) && ! compset -P $(( num[2] - 1 )) \*$sep[2]; then
  (( nosep )) || suf=( -S $sep[2] -r "$end[1]${sep[2][1]} \t\n\-" )
  compset -S ${sep[2]}\* && suf=()
  compset -P \*$sep[2] && pref=()
else
  pref=()
fi

(( minus = argv[(ib:2:)-] ))
"${(@)argv[1,minus-1]}" "$opts[@]" -F dedup "$pref[@]" "$suf[@]" "${(@)argv[minus+1,-1]}"