Hi,

I looked at some code that uses this function, and unfortunately there's
no docstring in the code that documents it.  Could you please add such a
docstring.

There are several other functions in minibuffer.el with no docstring; my
emacs lisp skills are far from very seasoned, so I can't offer my help
with this.

Thank you,
-- 
Med Venlig Hilsen / Kind Regards,
Mads Jensen
Rubinsteinsvej 31,st.th
DK-2450 Kbh. SV
Denmark
+45 6168 8518
My brain is my second favorite organ.
      -- Woody Allen