anchor.diff:  				  ;bg
   				  ("cd" . make-utility)
   				  ;command
  -				  ;false
  +				  ("false" . make-utility)
   				  ;fc
   				  ;fg
  -				  ;getopts
  +				  ("getopts" . make-utility)
   				  ("jobs" . make-utility)
   				  ;kill
   				  ;newgrp
   				  ;pwd
   				  ;read
  -				  ;true
  +				  ("true" . make-utility)
   				  ("umask" . make-utility)
   				  ;unalias
   				  ;wait
  
positive.code: (defun reap-children (se)
    (loop for (job-id . pid) in (hash-table-alist (se-bg-jobs se))
       for stat = (and pid (isys:waitpid pid isys:wnohang))
       if stat
       do
         (cond
  	 ((isys:wifexited stat)
  
negative.code:                     (setf iolib/pathnames:*default-file-path-defaults* abspath)
                      0)
                    (iolib/syscalls:enoent (v) (declare (ignore v)) 127))))
  	   (:|false|
  	     (false-command ut))
  	   (:|getopts|
  	     (getopts-command ut))
  	   (:|jobs|
  	     (jobs-command ut))
  	   (:|true|
  	     (true-command ut))
  	   (:|umask|
  	     (umask-command ut))
  	   (:|[|
  