#
# set +o errexit -o noglob -o nounset is assumed.
#

rtl_date() { command date "+${1:-${DEFAULT_TIMESTAMP_FMT:-"%Y/%m/%d %H:%M:%S"}}"; };
rtl_set_IFS_nl() { IFS="
"; };
rtl_set_var_unsafe() { [ -n "${2}" ] && eval ${1}=\"${2}\" || return 0; };
rtl_test_cmd() { command -v "${1}" >/dev/null; };
rtl_uniq() { if [ "${#}" -gt 0 ]; then printf "%s" "${*}" | sed 's/ /\n/g' | awk '!x[$0]++' | paste -s -d" "; fi; };
rtl_unset_vars() { while [ ${#} -gt 0 ]; do unset "${1}"; shift; done; };

# vim:filetype=sh