[seqfan] Re: Announcements: faster search, new Sys Admin

Peter Munn techsubs at pearceneptune.co.uk
Thu Jul 13 16:00:32 CEST 2023

On Wed, July 12, 2023 11:20 pm, M. F. Hasler via SeqFan wrote:
> On Sun, Jun 23, 2019 at 5:19PM Russ Cox <rsc at swtch.com> wrote:
>> (...)
>> As an experiment, I've changed the rules on the server to turn three or
>> more space-separated numbers into a sequence search (...)
> My attention was drawn on the fact that this "recent" change of converting
> "x y z ..."  to "x, y, z, ..." instead of "subseq: x, y, z..." as earlier,
> is only done when x y z... contain only digits (but no minus sign !).
> In other words, a search for "-x -y -z ..." is the same as was "x y z"
> before (and approximately but not exactly the same as "subseq:x, y, z").
> That may actually be handy (because I found the distinction between "x y
> z" and "x,y,z" useful) but I'm not sure it is intentional.

Another effect seems clearly unintended.

A search for [A000027  3 4 5 6] or [A000027  3, 4, 5, 6] doesn't find even

You have to search instead for [3 4 5 6 A000027] or [3 4 5 6 A000027]
which correctly finds many sequences matching the criteria.

Best Regards,


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