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Re: [Chicken-users] Keyword parameters bug?


From: Alonso Andres
Subject: Re: [Chicken-users] Keyword parameters bug?
Date: Wed, 15 Apr 2009 11:27:19 -0300

On Wed, Apr 15, 2009 at 3:12 AM, felix winkelmann <address@hidden> wrote:
>
> I can not reproduce this. Are you using the svn trunk or the 4.0.0 tarball?
>

Hi Felix. Yes, the 4.0.0 tarball: Version 4.0.0 - SVN rev. 13887

It turns out that what was causing this problem was the readline egg
that I ported to Chicken 4. When I removed it from my .csirc it worked
fine.

I tried to find what was causing this problem in the readline egg, and
it seems it has something to do with the "(import scheme)" inside the
module. Maybe it's not properly ported/compiled, since other modules
using "(import scheme)" don't trigger this problem when using keywords
inside procedures. I'd like to see an official port of readline into
Chicken 4 by the way.

I could reproduce this problem after using "(import scheme)" that way:

----------[$ csi]

CHICKEN
(c)2008-2009 The Chicken Team
(c)2000-2007 Felix L. Winkelmann
Version 4.0.0 - SVN rev. 13887
linux-unix-gnu-x86 [ manyargs dload ptables applyhook ]
compiled 2009-04-07 on ubuntu (Linux)

; loading /home/alonso/.csirc ...
#;1> (define (test-proc #!key some-arg string) (display some-arg)
(newline) (display string) (newline))
#;2> (test-proc some-arg: "X" string: "Y")
X
Y
#;3> (import scheme)
; loading /usr/local/lib/chicken/4/scheme.import.so ...
#;4> (define (test-proc #!key some-arg string) (display some-arg)
(newline) (display string) (newline))
#;5> (test-proc some-arg: "X" string: "Y")
X
#<procedure (string . chars1001)>
#;6>
----------

It seems that after the import, the keyword parameters don't work
correctly anymore.

Another example using modules:

----------[$ csi]

CHICKEN
(c)2008-2009 The Chicken Team
(c)2000-2007 Felix L. Winkelmann
Version 4.0.0 - SVN rev. 13887
linux-unix-gnu-x86 [ manyargs dload ptables applyhook ]
compiled 2009-04-07 on ubuntu (Linux)

; loading /home/alonso/.csirc ...
#;1> (module some-module * (import scheme chicken) (define (test-proc
#!key some-arg string) (display some-arg) (newline) (display string)
(newline)))
; loading /usr/local/lib/chicken/4/scheme.import.so ...
; loading /usr/local/lib/chicken/4/chicken.import.so ...
#;2> (import some-module)
#;3> (test-proc some-arg: "X" string: "Y")
X
#<procedure (string . chars1001)>
#;4>
----------

Note: now my .csirc is empty (actually every line is commented out to
be more precise), so the line "; loading /home/alonso/.csirc ..."
shouldn't have any effect while using csi.

Thanks,

                Alonso




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