Status on Elisp and special variable handling

[Daniel Kraft]

Hi all,

it's been some time since I last worked on guile/elisp, but I hope to 
get back to it soon (gcc recently went to bug-fix only mode before the 
next release and I wanted to implement some stuff before the dead-line 
over the last weeks).  Andy, what's your status on looking through my 
elisp branch?

Apart from that, I think some items I could work on next are defalias 
and foolocal variables.  I have to admit that I still need to look-up 
and think about the very details of those, but I think for both of that 
we could add some other special variable values (like void currently is).

If any such value is hit when reading/setting a variable, we do the 
needed stuff for handling aliases/foolocal variables instead of doing 
the operation directly.  While this should work, I fear that it hits 
performance once again...  But I do not see how we could implement 
aliases and foolocal variables without checking on each variable access 
if it is some special variable or not?  Maybe there we could add VM 
support if necessary.

Sorry for the probable confusion above, but maybe it is still somewhat 
clear what I'm thinking about...  Otherwise I hope to do some work there 
soon and maybe this will make it clearer.

Good evening!  Cheers,
Daniel

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