Re: Qs on obarrays

[Kevin Rodgers <ihs_4664@yahoo.com>]

Drew Adams wrote:
 > Actually, I don't bother creating a new obarray, after all. I just use an
 > alist  (easier to manipulate) and redefine the predicate to work with 
that:
 >
 > (all-completions "" my-alist (lambda (elt) (commandp (intern (car 
elt)))))
 >
 > Or, more generally (what I really do):
 >
 > (when (arrayp minibuffer-completion-table)
 >   (setq minibuffer-completion-predicate
 >         `(lambda (elt)
 >             (funcall ',minibuffer-completion-predicate
 >                      (intern (car elt))))))
 > (setq minibuffer-completion-table
 >       my-alist) ; Built by filtering `minibuffer-completion-table'.
 > ...
 > (all-completions "" minibuffer-completion-table
 >                  minibuffer-completion-predicate)

I wouldn't recommend setq'ing minibuffer-completion-table and
-predicate.  Those variables (plus -confirm) are let-bound by Emacs' own
higher level completion functions, and I think it'd be cleaner if you
did the same -- or just set your own my-completion-table and -predicate
variables, since you're passing their values explicitly to
all-completions anyway.

-- 
Kevin Rodgers