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From: ludo@gnu.org (Ludovic Courtès)
To: guile-user@gnu.org
Subject: Re: srfi-88 keyword / symbol ambiguity
Date: Mon, 21 Jul 2008 12:04:05 +0200	[thread overview]
Message-ID: <87r69neep6.fsf@gnu.org> (raw)
In-Reply-To: 2bc5f8210807201335v3f2ceaf0lb250c35b54ff4727@mail.gmail.com

Hi,

"Julian Graham" <joolean@gmail.com> writes:

> guile> (keyword? 'foo:)
> #t

This is expected, per SRFI-88.

> This is particularly bad because it breaks a lot of code that calls
> `use-modules' with the :prefix or :rename syntax -- from looking at some
> of the core libraries, it seems like it's pretty common to use
> rename-prefixes that end in a colon.  So, for example, the ice-9 debugger
> modules don't work after loading `(srfi srfi-88)'.

Good point.  Alas, that's hardly avoidable, given that the above
behavior is defined by SRFI-88.

One way to avoid it would be to not have a mutable global reader.  This
can be achieved using the `current-reader' fluid and something like
Guile-Reader, which produces immutable `read' procedures:

  http://www.nongnu.org/guile-reader/doc/guile-reader.html#Quick-Start

Thanks,
Ludovic.





  reply	other threads:[~2008-07-21 10:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-20 20:35 srfi-88 keyword / symbol ambiguity Julian Graham
2008-07-21 10:04 ` Ludovic Courtès [this message]
2008-07-21 12:18 ` Neil Jerram

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