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#compdef touch gtouch

local args variant
_pick_variant -r variant gnu=GNU $OSTYPE --version

args=(
  '-a[change access time (atime)]'
  '-m[change modification time (mtime)]'
  '(-r -d --date --reference 1)-t+[use specified time]:time ([[CC]YY]MMDDhhmm[.SS])'
)
case $variant in
  gnu)
    args+=(
      '(-c --no-create)'{-c,--no-create}"[don't create file if it doesn't exist]"
      '(-h --no-dereference)'{-h,--no-dereference}'[act on symbolic links themselves]'
      '(-t -d --date -r --reference)'{-r+,--reference=}'[use corresponding times from specified reference file]:file:_files'
      '(-t -d --date -r --reference)'{-d+,--date=}'[use specified date/time]:date/time'
      '*--time=[change specified time]:time:(atime access use mtime modify)'
      '(-)--help[display help information]'
      '(-)--version[display version information]'
    )
  ;;
  darwin*|dragonfly*|freebsd*)
    args+=(
      '(-c 1)-A+[adjust time stamps by relative value]:time delta ([[-][hh]mm]SS)'
    )
  ;|
  darwin*|dragonfly*|freebsd*|netbsd*)
    args+=( '-h[act on symbolic links themselves]' )
  ;|
  dragonfly*|freebsd*|openbsd*|solaris*)
    args+=( '(-r -t 1)-d+[use specified date/time]:date/time' )
  ;|
  darwin*|dragonfly*|freebsd*|netbsd*|solaris*)
    args+=( '1:: :_guard "[0-9]#" "timespec (MMDDhhmm[YY])"' )
  ;|
  *) # not GNU
    args=( -A "-*" $args
      "(-A)-c[don't create file if it doesn't exist]"
      '(-t -d 1)-r+[use corresponding times from specified reference file]:file:_files'
    )
  ;;
esac

_arguments -s -S $args '*:file:_files'