feat: Improve performance for empty line print for larger lists

src/prompts.sh

@@ -25,7 +25,14 @@ _key_input() {
 
 # print new line for empty element in array
 # shellcheck disable=SC2231
-_new_line_foreach_item() { for _ in $1[@]; do echo -en "\n" >&2; done }
+_new_line_foreach_item() {
+    count=0
+    while [[ $count -lt $1  ]];
+    do
+        echo "" >&2
+        ((count++))
+    done
+}
 
 # display prompt text without linebreak
 _prompt_text() {
@@ -122,7 +129,7 @@ list() {
 
     local opts=("${@:2}")
     local opts_count=$(($# -1))
-    _new_line_foreach_item "${opts[*]}"
+    _new_line_foreach_item "${#opts[@]}"
 
     # determine current screen position for overwriting the options
     local lastrow; lastrow=$(_get_cursor_row)
@@ -179,7 +186,7 @@ checkbox() {
 
     local opts; opts=("${@:2}")
     local opts_count; opts_count=$(($# -1))
-    _new_line_foreach_item "${opts[*]}"
+    _new_line_foreach_item "${#opts[@]}"
 
     # determine current screen position for overwriting the options
     local lastrow; lastrow=$(_get_cursor_row)