@@ -57,7 +57,7 @@ required_commands() {
5757 # usage: requires_commands [cmd1 ...]
5858
5959 local exit_val=0
60− while [ ! -z "$1" ]; do
60+ while [ -n "$1" ]; do
6161
6262 if ! command -v "$1" &>/dev/null; then
6363 err_msg "missing command $1"
@@ -125,7 +125,7 @@ rst_title() {
125125rst_para() {
126126 # usage: RST_INDENT=1 rst_para "lorem ipsum ..."
127127 local prefix=''
128− if ! [[ -z $RST_INDENT ]] && [[ $RST_INDENT -gt 0 ]]; then
128+ if [[ -n $RST_INDENT ]] && [[ $RST_INDENT -gt 0 ]]; then
129129 prefix="$(for i in $(seq 1 "$RST_INDENT"); do printf " "; done)"
130130 echo -en "\n$*\n" | $FMT | prefix_stdout "$prefix"
131131 else
@@ -151,8 +151,8 @@ wait_key(){
151151 local msg="${MSG}"
152152 [[ -z "$msg" ]] && msg="${_Green}** press any [${_BCyan}KEY${_Green}] to continue **${_creset}"
153153
154− [[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
155− [[ ! -z $_t ]] && _t="-t $_t"
154+ [[ -n $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
155+ [[ -n $_t ]] && _t="-t $_t"
156156 printf "$msg"
157157 # shellcheck disable=SC2086
158158 read -r -s -n1 $_t
@@ -167,8 +167,8 @@ ask_yn() {
167167 local EXIT_NO=1 # exit status 1 --> error code
168168
169169 local _t=$3
170− [[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
171− [[ ! -z $_t ]] && _t="-t $_t"
170+ [[ -n $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
171+ [[ -n $_t ]] && _t="-t $_t"
172172 case "${FORCE_SELECTION:-${2}}" in
173173 Y) return ${EXIT_YES} ;;
174174 N) return ${EXIT_NO} ;;
@@ -218,7 +218,7 @@ tee_stderr () {
218218 # hello
219219
220220 local _t="0";
221− if [[ ! -z $1 ]] ; then _t="$1"; fi
221+ if [[ -n $1 ]] ; then _t="$1"; fi
222222
223223 (while read -r line; do
224224 # shellcheck disable=SC2086
@@ -233,7 +233,7 @@ prefix_stdout () {
233233
234234 local prefix="${_BYellow}-->|${_creset}"
235235
236− if [[ ! -z $1 ]] ; then prefix="${_BYellow}$1${_creset}"; fi
236+ if [[ -n $1 ]] ; then prefix="${_BYellow}$1${_creset}"; fi
237237
238238 # shellcheck disable=SC2162
239239 (while IFS= read line; do
@@ -260,7 +260,7 @@ cache_download() {
260260
261261 local exit_value=0
262262
263− if [[ ! -z ${SUDO_USER} ]]; then
263+ if [[ -n ${SUDO_USER} ]]; then
264264 sudo -u "${SUDO_USER}" mkdir -p "${CACHE}"
265265 else
266266 mkdir -p "${CACHE}"
@@ -274,7 +274,7 @@ cache_download() {
274274 if [[ ! -f "${CACHE}/$2" ]]; then
275275 info_msg "caching: $1"
276276 info_msg " --> ${CACHE}/$2"
277− if [[ ! -z ${SUDO_USER} ]]; then
277+ if [[ -n ${SUDO_USER} ]]; then
278278 sudo -u "${SUDO_USER}" wget --progress=bar -O "${CACHE}/$2" "$1" ; exit_value=$?
279279 else
280280 wget --progress=bar -O "${CACHE}/$2" "$1" ; exit_value=$?
@@ -298,8 +298,8 @@ choose_one() {
298298 local choice=$1;
299299 local max="${#@}"
300300 local _t
301− [[ ! -z $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
302− [[ ! -z $_t ]] && _t="-t $_t"
301+ [[ -n $FORCE_TIMEOUT ]] && _t=$FORCE_TIMEOUT
302+ [[ -n $_t ]] && _t="-t $_t"
303303
304304 list=("$@")
305305 echo -e "${_BGreen}Menu::${_creset}"
@@ -374,7 +374,7 @@ install_template() {
374374 local chmod="${pos_args[4]-644}"
375375
376376 info_msg "install (eval=$do_eval): ${dst}"
377− [[ ! -z $variant ]] && info_msg "variant: ${variant}"
377+ [[ -n $variant ]] && info_msg "variant: ${variant}"
378378
379379 if [[ ! -f "${template_origin}" ]] ; then
380380 err_msg "${template_origin} does not exists"
@@ -386,14 +386,14 @@ install_template() {
386386 if [[ "$do_eval" == "1" ]]; then
387387 template_file="${CACHE}${dst}${variant}"
388388 info_msg "BUILD template ${template_file}"
389− if [[ ! -z ${SUDO_USER} ]]; then
389+ if [[ -n ${SUDO_USER} ]]; then
390390 sudo -u "${SUDO_USER}" mkdir -p "$(dirname "${template_file}")"
391391 else
392392 mkdir -p "$(dirname "${template_file}")"
393393 fi
394394 # shellcheck disable=SC2086
395395 eval "echo \"$(cat ${template_origin})\"" > "${template_file}"
396− if [[ ! -z ${SUDO_USER} ]]; then
396+ if [[ -n ${SUDO_USER} ]]; then
397397 chown "${SUDO_USER}:${SUDO_USER}" "${template_file}"
398398 fi
399399 else
@@ -856,8 +856,8 @@ git_clone() {
856856 fi
857857
858858 [[ -z $branch ]] && branch=master
859− [[ -z $user ]] && [[ ! -z "${SUDO_USER}" ]] && user="${SUDO_USER}"
860− [[ ! -z $user ]] && bash_cmd="sudo -H -u $user -i"
859+ [[ -z $user ]] && [[ -n "${SUDO_USER}" ]] && user="${SUDO_USER}"
860+ [[ -n $user ]] && bash_cmd="sudo -H -u $user -i"
861861
862862 if [[ -d "${dest}" ]] ; then
863863 info_msg "already cloned: $dest"