arg() снова исправлен вызов tr

helpers/arg-parser/args.sh

@@ -42,8 +42,8 @@ arg() {
 
         # clear $arg_search from special and duplicate characters, e.g. 'fas-)dfs' will become 'fasd'
         local arg_chars="$(printf "%s" "$arg_search" \
-            | tr -s "[$arg_search]" 2>&1 >/dev/null \
-            | tr -d "[:punct:][:blank:]" 2>&1 >/dev/null)"
+            | tr -s "[$arg_search]" 2>/dev/null \
+            | tr -d "[:punct:][:blank:]" 2>/dev/null)"
 
         # if $arg_name is not one of $arg_chars the skip it
         grep_match "-$arg_name" "^-[$arg_chars]$" || continue