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Re: [Chicken-users] Adding a free slot to Chicken symbols

From: Zbigniew
Subject: Re: [Chicken-users] Adding a free slot to Chicken symbols
Date: Mon, 10 Apr 2006 18:23:28 -0500

For what it's worth, I put a snapshot of darcs HEAD at  [3.2M]

On 4/10/06, John Cowan <address@hidden> wrote:
> felix winkelmann scripsit:
> > Adding an extra slot to symbols would be pretty handy, and would make
> > it easy to implement different Lisps in chicken, but I wonder how much code
> > depends on C_SIZEOF_SYMBOL being 3....
> >
> > Anyway, give the patch a try, please.
> At the risk of sounding like an ingrate, I don't want to try this, as
> setting up darcs on my system looks to be more trouble than it's worth.
> (I hope someone else will try it, though, who already has the current
> HEAD available: applying classic diffs to anything but the version they
> were made from is just too dangerous).
> I was exploring an alternative mechanism using a global hash table, but I
> need the hash table to handle uninterned symbols (which are potentially
> garbage collected) properly, and -- contrary to the documentation --
> a symbol cannot be wrapped in a (strong or weak) locative.  Can this
> be fixed?  Presumably the change to Chicken would be much less drastic.
> --
> Andrew Watt on Microsoft:                       John Cowan
> Never in the field of human computing           address@hidden
> has so much been paid by so many      
> to so few! (pace Winston Churchill)
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