On Mon, 23 May 2011 12:45:51 -0300 Stefan Monnier <monnier@iro.umontreal.ca> wrote: 

>> The idea from the beginning was that this is a true data type, not an
>> auxiliary library.  At least deferred.el and fsm.el will use it, and I
>> am in favor of adding deferred.el to Emacs as I mentioned.

SM> I don't know of any package using deferred either, so it doesn't seem
SM> urgent to add to Emacs's core.  I'd rather keep such things on ELPA for
SM> now until they prove their necessity.

OK.

>> I would rather not isolate its scope to just URL interactions because
>> rewriting url-future-* to future-* later will be annoying

SM> Maybe "annoying" but trivial to do.

OK, I did as you asked.  See attached, which has commentary, error
handling, and ERT tests.  I rewrote some trivial functions as defmacros.

Thanks
Ted