#compdef watch

local variant ret=1
local -a context line state state_descr
local -A opt_args

_pick_variant -r variant procps=procps $OSTYPE --version

case $variant in
  (procps)
    _arguments -s -S -A '-*' : \
      '(: * -)'{-h,--help}'[display help information]' \
      '(: * -)'{-v,--version}'[display version information]' \
      '(-b --beep)'{-b,--beep}'[beep on non-zero command exit]' \
      '(-c --color)'{-c,--color}'[interpret ANSI color/style sequences]' \
      '(-d --differences)'{-d-,--differences=-}'[highlight changes between updates]::how to highlight:(permanent)' \
      '(-e --errexit)'{-e,--errexit}'[freeze updates on non-zero command exit]' \
      '(-g --chgexit)'{-g,--chgexit}'[exit on command output change]' \
      '(-n --interval)'{-n+,--interval=}'[specify update interval]:update interval (seconds) [2]' \
      '(-p --precise)'{-p,--precise}'[run command at precise intervals]' \
      '(-t --no-title)'{-t,--no-title}'[disable header]' \
      '(-x --exec)'{-x,--exec}'[pass command to exec(2) instead of `sh -c`]' \
      '(-)*::: :->cmd' \
    && ret=0

    [[ $state == cmd ]] &&
    if
      (( CURRENT == 1 )) &&
      [[ $words[1] == (\"|\'|\$\')* ]] &&
      [[ -z $opt_args[(i)(-x|--exec)] ]]
    then
      _cmdstring && ret=0
    else
      _normal && ret=0
    fi
    ;;
  # watch(1) has completely different semantics on freebsd compared to linux, hence:
  (freebsd*|dragonfly*) _watch-snoop "$@" && ret=0 ;;
  (*) _default && ret=0 ;;
esac

return ret