I use delete-duplicates quite often in throwaway scripts.  But yeah, in general use
O(n^2) property gets in the way.  I second for removing ideque-delete-duplicates.

On Mon, Apr 11, 2016 at 12:55 PM, John Cowan <xxxxxx@mercury.ccil.org> wrote:
Shiro Kawai scripsit:

> If, not only a equality predicate but also a comparator
> is allowed as the optional argument of ideque-delete-duplicates,
> it can construct efficient map internally if the passed comparator has
> ordering predicate and/or hash function.

On reflection, I think that delete-duplicates is really not that useful.
Most of the time we want delete-neighbor-duplicates (part of the sorting
SRFI).  So I'm going to remove it from the present SRFI again.

--
John Cowan          http://www.ccil.org/~cowan        xxxxxx@ccil.org
A rose by any other name may smell as sweet, but if you called it
an onion you'd get cooks very confused.          --RMS