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From: ludo@gnu.org (Ludovic Courtès)
To: guile-devel@gnu.org
Subject: Re: new match system bug?
Date: Sat, 04 Sep 2010 14:44:49 +0200	[thread overview]
Message-ID: <878w3hy8xq.fsf@gnu.org> (raw)
In-Reply-To: 201009041438.37352.stefan.tampe@spray.se

Hello!

Stefan Israelsson Tampe <stefan.tampe@spray.se> writes:

> While eating the dogfood of the new match macro I come across a bug
> e.g, this does not work!
>
> (match '(a b) ((and x (a ... b)) a))

But:

  scheme@(guile-user)> (match '(a b) ((and x (a . b)) a))
  $1 = a

According to the grammar in the manual, I don’t think literal ‘...’ can
be used in the middle of a list; it should only be used at the end of a
list, where it means “zero or more”:

  scheme@(guile-user)> (match '(a b) ((a ...) a))
  $2 = (a b)

Thanks,
Ludo’.




  reply	other threads:[~2010-09-04 12:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-04 12:38 new match system bug? Stefan Israelsson Tampe
2010-09-04 12:44 ` Ludovic Courtès [this message]
2010-09-04 13:29   ` Stefan Israelsson Tampe
2010-09-04 15:00     ` Ludovic Courtès
2010-09-04 15:17       ` Stefan Israelsson Tampe
2010-09-04 15:02   ` Stefan Israelsson Tampe

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