emacs icomplete-vertical for manpages chdir(2) fails

[Van Ly <van.ly%sdf.org@localhost>]

Hello,

Do the manpages need to be indexed periodically?

Using icomplete-vertical mode in Emacs and typing in "chdir" and
"fchdir" fully reports "[No matches]" but if I depress RET the manpage
shows.  acct(2) will showup as expected in the autocomplete, so all of
section 2 is not unlisted by autocomplete.

Does something like a locatedb need to have chdir and fchdir entries for
the autocomplete to show?  Also, if I type too fast the *Messages*
buffer shows: "Waiting for process to die...done" associated with lag
delays at finding autocompletions.

Is this problem NetBSD or Emacs-centric?

Thanks.

-- 
vl