#compdef zdump

if (( ! $+_zoneinfo_dirs )); then
  _zoneinfo_dirs=( /usr/{share,lib,share/lib}/{zoneinfo*,locale/TZ}(/) )
fi

_arguments \
  '-v[lowest possible]' \
  '-c[cutoff]:cutoff year:' \
  '*:timezone:_files -W _zoneinfo_dirs'