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From: Mark H Weaver <mhw@netris.org>
To: David Kastrup <dak@gnu.org>
Cc: 17485@debbugs.gnu.org
Subject: bug#17485: [PATCH 2/3] Rewrite take-right, drop-right, drop-right!
Date: Sat, 20 Sep 2014 10:56:12 -0400	[thread overview]
Message-ID: <87k34yl4s3.fsf@yeeloong.lan> (raw)
In-Reply-To: <1401821778-19972-2-git-send-email-dak@gnu.org> (David Kastrup's message of "Tue, 3 Jun 2014 20:56:17 +0200")

David Kastrup <dak@gnu.org> writes:

> * module/srfi/srfi-1.scm (take-right, drop-right, drop-right!): The
>   definitions tended to be overly complicate and/or rely on pushing
>   material on the VM stack, detrimental to scalability for Guile 2.0 and
>   also worse for performance.
>
>   The changed definitions lead to different, more accurate exceptions
>   being raised.  They rely on length+ returning the length of dotted
>   lists, behavior that is not specified by the SRFI-1 definition but
>   available in GUILE.

Your patches look good to me, except that we can't change 'length+' as
you propose.  Instead I'd like to add a lax variant of 'length+' with a
different name, and use that.

I can take care of doing this myself, and will of course still credit
you in whatever manner you prefer, but I've run into a legal problem: we
don't currently have copyright papers for you on file.  Are you willing
to file copyright papers for GUILE?

      Mark





  parent reply	other threads:[~2014-09-20 14:56 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-13 10:47 bug#17485: (srfi srfi-1) reduce-right does not scale, version 2.0.9 David Kastrup
2014-06-01 23:41 ` Mark H Weaver
2014-06-02  7:59   ` David Kastrup
2014-06-03 18:56 ` bug#17485: [PATCH 1/3] Let length+ return the length of dotted lists rather than #f David Kastrup
2014-06-03 18:56   ` bug#17485: [PATCH 2/3] Rewrite take-right, drop-right, drop-right! David Kastrup
2014-06-04  3:29     ` Mark H Weaver
2014-06-04  3:45     ` Mark H Weaver
2014-09-20 14:56     ` Mark H Weaver [this message]
2014-09-20 15:15       ` David Kastrup
2014-09-22 17:15         ` Mark H Weaver
2014-09-22 18:40           ` David Kastrup
2014-06-03 18:56   ` bug#17485: [PATCH 3/3] Reimplement reduce-right in srfi-1 David Kastrup
2014-06-04  3:30     ` Mark H Weaver
2014-06-04  3:42   ` bug#17485: [PATCH 1/3] Let length+ return the length of dotted lists rather than #f Mark H Weaver
2014-06-04  4:57     ` David Kastrup
2014-06-04 10:09       ` David Kastrup
2014-06-05 13:57         ` David Kastrup
2016-06-21 14:42 ` bug#17485: (srfi srfi-1) reduce-right does not scale, version 2.0.9 Andy Wingo
2016-06-21 15:31   ` David Kastrup
2016-07-12  7:07     ` Andy Wingo
2016-07-12  7:43 ` bug#17485: Ugh, well David Kastrup
2016-07-12 13:54   ` Andy Wingo

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