$ xpanes -naaa hoge fuga
xargs: invalid number for -n option
Usage: xargs [OPTION]... COMMAND [INITIAL-ARGS]...
Run COMMAND with arguments INITIAL-ARGS and more arguments read from input.

Mandatory and optional arguments to long options are also
mandatory or optional for the corresponding short option.
  -0, --null                   items are separated by a null, not whitespace;
                                 disables quote and backslash processing and
                                 logical EOF processing
  -a, --arg-file=FILE          read arguments from FILE, not standard input
  -d, --delimiter=CHARACTER    items in input stream are separated by CHARACTER,
                                 not by whitespace; disables quote and backslash
                                 processing and logical EOF processing
  -E END                       set logical EOF string; if END occurs as a line
                                 of input, the rest of the input is ignored
 ...