RE: [External] : Continue cycling from a particular element in collection

[Drew Adams <drew.adams@oracle.com>]

> > > I am using 'completing-read' with INITIAL-INPUT to prefill the
> minibuffer
> > > with the first entry "alpha". Hew can I then start at index k from
> collection
> > > as the next entry.
> >
> >
> > There is NO "next entry". INITIAL-INPUT is simply a string that gets
> inserted in the minibuffer. It need not correspond to any candidate
> provided by argument COLLECTION, meaning that it need not correspond to
> any completion.
> >
> > `completing-read' can be LAX, meaning that, if REQUIRE-MATCH is nil or
> absent then it accepts any text you input - it need not be a completion
> candidate.
> 
> Ok, but can I ask completing-read to start from 
> a different point in collection, rather than
> from the beginning ?

Dunno.  I'm no expert on vanilla Emacs cycling,
and I'm not sure what kind of cycling ("next entry")
you have in mind.

If you're using argument DEFAULTS to provide a list
of "entries" then you can of course sort it (or
truncate it) however you like, to affect the "future
history".

If you're using a HISTORY variable and cycling the
(past/real) history then I suppose you could sort
(or truncate) its value.

But entries in neither DEFAULTS nor HISTORY need be
elements of COLLECTION.

If you meant the "future history" elements that are
provided by the misfeature of automatically adding
everything in COLLECTION to that pseudo-history,
then no, AFAIK there's no way to filter, sort, or
truncate the elements from COLLECTION that get added.

But maybe there will be now, since I think they're
considering adding some option that may help here -
dunno.

Maybe someone else will have a useful suggestion.