GNU bug report logs - #48765
`member` from (scheme base) returns empty list instead of #f when item is not found

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Arvydas Silanskas <nma.arvydas.silanskas <at> gmail.com>
To: bug-guile <at> gnu.org
Subject: `member` from (scheme base) returns empty list instead of #f when
 item is not found
Date: Tue, 1 Jun 2021 00:07:39 +0300

[Message part 1 (text/plain, inline)]

Default `member` works fine:

$ guile
> (member 'a '(b))
$1 = #f

However, using scheme base it returns empty list

$ guile --r7rs
> (import (scheme base))
> (member 'a '(b))
$1 = ()

Other functions (memq, memv) seem to work fine.
I am using version 3.0.5 as distributed by debian bullseye

[Message part 2 (text/html, inline)]

Message #8 received at 48765 <at> debbugs.gnu.org (full text, mbox):

From: dsmich <at> roadrunner.com
To: "'Arvydas Silanskas'" <nma.arvydas.silanskas <at> gmail.com>
Cc: "'48765 <at> debbugs.gnu.org'" <48765 <at> debbugs.gnu.org>
Subject: RE: bug#48765: `member` from (scheme base) returns empty list instead
 of #f when item is not found
Date: Mon, 31 May 2021 21:44:32 +0000

[Message part 1 (text/plain, inline)]

In git main it appears to work but with a warning:

$ guile --r7rs
GNU Guile 3.0.7.13-c1fd55-dirty
...

scheme@(guile-user)> (import (scheme base))
scheme@(guile-user)> (member 'a '(b))
WARNING: (guile-user): imported module (scheme base) overrides core
binding `member'
$1 = #f
scheme@(guile-user)> (member 'a '(b a))
$2 = (a)

-Dale

	-----------------------------------------From: "Arvydas Silanskas" 
To: 48765 <at> debbugs.gnu.org
Cc: 
Sent: Monday May 31 2021 5:10:12PM
Subject: bug#48765: `member` from (scheme base) returns empty list
instead of #f when item is not found

 Default `member` works fine:

 $ guile
 > (member 'a '(b)) $1 = #f

 However, using scheme base it returns empty list 
 $ guile --r7rs
 > (import (scheme base))
 > (member 'a '(b))
 $1 = () 
 Other functions (memq, memv) seem to work fine.
 I am using version 3.0.5 as distributed by debian bullseye

[Message part 2 (text/html, inline)]

Message #11 received at 48765 <at> debbugs.gnu.org (full text, mbox):

From: Taylan Kammer <taylan.kammer <at> gmail.com>
To: dsmich <at> roadrunner.com,
 'Arvydas Silanskas' <nma.arvydas.silanskas <at> gmail.com>
Cc: "'48765-done <at> debbugs.gnu.org'" <48765 <at> debbugs.gnu.org>
Subject: bug#48765: `member` from (scheme base) returns empty list instead of
 #f when item is not found
Date: Tue, 1 Jun 2021 02:49:36 +0200

On 31.05.2021 23:44, dsmich <at> roadrunner.com wrote:
> In git main it appears to work but with a warning:
> 
> $ guile --r7rs
> GNU Guile 3.0.7.13-c1fd55-dirty
> ...
> 
> scheme@(guile-user)> (import (scheme base))
> scheme@(guile-user)> (member 'a '(b))
> WARNING: (guile-user): imported module (scheme base) overrides core binding `member'
> $1 = #f
> scheme@(guile-user)> (member 'a '(b a))
> $2 = (a)
> 
> 
> -Dale
> 
> 
> -----------------------------------------
> 
> From: "Arvydas Silanskas"
> To: 48765 <at> debbugs.gnu.org
> Cc:
> Sent: Monday May 31 2021 5:10:12PM
> Subject: bug#48765: `member` from (scheme base) returns empty list instead of #f when item is not found
> 
> Default `member` works fine:
> 
> $ guile
>> (member 'a '(b)) $1 = #f
> 
> However, using scheme base it returns empty list
> $ guile --r7rs
>> (import (scheme base))
>> (member 'a '(b))
> $1 = ()
> Other functions (memq, memv) seem to work fine.
> I am using version 3.0.5 as distributed by debian bullseye

The fix for this was part of the 3.0.6 release. :-)

Older report on the same bug:

https://bugs.gnu.org/43304

The warning can be safely ignored, and I believe it won't appear
when writing an R7RS library using 'define-library'.

Closing this report but feel free to ask further questions.

-- 
Taylan

Message #16 received at 48765-done <at> debbugs.gnu.org (full text, mbox):

From: Rob Browning <rlb <at> defaultvalue.org>
To: 48765-done <at> debbugs.gnu.org
Subject: Re: bug#48765: `member` from (scheme base) returns empty list
 instead of #f when item is not found
Date: Thu, 15 Jul 2021 21:22:41 -0500

Taylan Kammer <taylan.kammer <at> gmail.com> writes:

> Closing this report but feel free to ask further questions.

Looks like the first attempt didn't take.  Trying again.

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org
GPG as of 2011-07-10 E6A9 DA3C C9FD 1FF8 C676 D2C4 C0F0 39E9 ED1B 597A
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4

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