fixed spellcheck and minor issues for release

helpers/common.sh

@@ -63,6 +63,7 @@ _getopt_split()
     _gs_out=()
 
     while [[ -n "$s" ]]; do
+        # shellcheck disable=SC1003 # '\' is a literal backslash
         case "${s:0:1}" in
             "'")
                 s="${s:1}"
@@ -108,12 +109,12 @@ export -f _getopt_split
 _trap_restore()
 {
     local line
-    local -a w=()
+    local -a _tr_w=()
     while IFS= read -r line; do
         [[ "$line" == "trap -- "* ]] || continue
-        _getopt_split w "$line"
-        # w = (trap -- <command> <SIGNAL>)
-        [[ ${#w[@]} -eq 4 ]] && trap -- "${w[2]}" "${w[3]}"
+        _getopt_split _tr_w "$line"
+        # _tr_w = (trap -- <command> <SIGNAL>)
+        [[ ${#_tr_w[@]} -eq 4 ]] && trap -- "${_tr_w[2]}" "${_tr_w[3]}"
     done <<< "$1"
     return 0
 }