#compdef getconf

local expl

if [[ CURRENT -eq 2 ]]; then
  _tags syswideconfig pathconfig standardsconfig

  while _tags; do
    if _requested -V syswideconfig expl 'systemwide configuration variables'
    then
      compadd "$expl[@]" -S '' ARG_MAX BC_BASE_MAX BC_DIM_MAX BC_SCALE_MAX \
          BC_STRING_MAX CHILD_MAX COLL_WEIGHTS_MAX EXPR_NEST_MAX LINE_MAX \
	  NGROUPS_MAX OPEN_MAX RE_DUP_MAX STREAM_MAX TZNAME_MAX
    fi
    if _requested -V standardsconfig \
        expl 'system-standards configuration variables'; then
      compadd "$expl[@]" -S '' _POSIX_CHILD_MAX _POSIX_LINK_MAX \
          _POSIX_MAX_CANON _POSIX_MAX_INPUT _POSIX_NAME_MAX _POSIX_NGROUPS_MAX \
	  _POSIX_OPEN_MAX _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_SSIZE_MAX \
	  _POSIX_STREAM_MAX _POSIX_TZNAME_MAX _POSIX_VERSION \
	  POSIX2_BC_BASE_MAX POSIX2_BC_DIM_MAX POSIX2_BC_SCALE_MAX \
	  POSIX2_BC_STRING_MAX POSIX2_COLL_WEIGHTS_MAX POSIX2_EXPR_NEST_MAX \
	  POSIX2_LINE_MAX POSIX2_RE_DUP_MAX POSIX2_VERSION POSIX2_C_BIND \
	  POSIX2_C_DEV POSIX2_FORT_DEV POSIX2_FORT_RUN POSIX2_LOCALEDEF \
	  POSIX2_SW_DEV _XOPEN_VERSION
    fi
    if _requested -V pathconfig expl 'system path configuration variables'
    then
      compadd "$expl[@]" -S '' PIPE_BUF _POSIX_CHOWN_RESTRICTED \
          _POSIX_NO_TRUNC _POSIX_VDISABLE
      compadd "$expl[@]" -S ' ' LINK_MAX MAX_CANON MAX_INPUT NAME_MAX PATH_MAX \
          PIPE_BUF
    fi
  done
else
  _files -/
fi