#compdef alias

local curcontext="$curcontext" state line expl type suf
typeset -A opt_args

_arguments -C -s -A "-*" -S \
  '(-r +r -s +s)-+g[list or define global aliases]' \
  '(-g +g -s +s)-+r[list or define regular aliases]' \
  '(-r +r -g +g)-+s[list or define suffix aliases]' \
  '-+m[print aliases matching specified pattern]' \
  '-L[print each alias in the form of calls to alias]' \
  '*::alias definition:->defn'

if [[ -n "$state" ]]; then
  if compset -P 1 '*='; then
    compset -q
    _normal
  else
    compset -S '=*' || suf='='
    type=( ${opt_args[(i)[-+][grs]]#?} )
    (( $#type )) && type=( -s $type )
    _wanted -x alias expl 'alias definition' _aliases -S "$suf" "$type[@]"
  fi
fi
