feat: Add variable name_suffix; Pass shellcheck; Discard useless variables from main script

src/lib/handlers/sources/tar.sh

@@ -26,16 +26,17 @@ handler::tar() {
     local uri
     local src_path
     local dst_path
-    local opts
     local archive
     local exclude
     local file_ext
 
     uri="$1"
+    # shellcheck disable=SC2154
     dst_path="$__main_target_path"
 
     parse_uri "$uri"
 
+    # shellcheck disable=SC2154
     if [ -f "$path" ] || [ -d "$path" ]; then
         src_path="$path"
     else
@@ -51,15 +52,8 @@ handler::tar() {
     # Exit if tar is not installed
     is_installed tar
 
-    # Overwrire __tar_options
-    if [ -n "$tar_options" ]; then
-        opts="$tar_options"
-    else
-        opts="$__tar_options"
-    fi
-
-    # Overwrite __tar_exclude
-    if [ "$tar_exclude" ]; then
+    # Set tar_exclude
+    if [ -n "$tar_exclude" ]; then
         for item in "${tar_exclude[@]}"; do
             exclude+=" --exclude $item"
         done
@@ -67,6 +61,9 @@ handler::tar() {
         exclude=
     fi
 
+    # Set options
+    tar_options="${tar_options:--acf}"
+
     # Select filename extension by compression type.
     if [ "$compression" ]; then
         # Make sure for the `--auto-compress` is enabled in __tar_options
@@ -99,14 +96,14 @@ handler::tar() {
     [ "$__verbose" ] && {
         echo "Source path: $src_path"
         echo "Destination path: $dst_path"
-        echo "Run command: tar $exclude $opts $archive $src_path"
+        echo "Run command: tar $exclude $tar_options $archive $src_path"
     }
 
     log "Archiving $src_path to $archive ..."
-    log "Run command: tar $exclude $opts $archive $src_path"
+    log "Run command: tar $exclude $tar_options $archive $src_path"
 
     # Run tar
-    try tar "$exclude" "$opts" "$archive" "$src_path"
+    try tar "$exclude" "$tar_options" "$archive" "$src_path"
 
     # Append path to 'backups' array
     backups+=("$archive")