Re: [TCLCORE] Empty list is not a list -- using twoPtrValue for NULL type

[miguel s. <mig...@gm...>]

Alexandre Ferrieux wrote:
>> PS: if/when you get around to it, I'd be mightily interested in the
>> semantics of what you are trying to do. Can't have an opinion or help in
>> implementation until I understand ... and that thread on clt was just
>> too much. If you ever summarize it ...
> 
> Look near the end, I have tried to illustrate the script-level aspects:
> 
> http://groups.google.com/group/comp.lang.tcl/tree/browse_frm/thread/b6c26a33f5ebd3e0/c8c452ad6386d7b2?hl=en&rnum=91&_done=%2Fgroup%2Fcomp.lang.tcl%2Fbrowse_frm%2Fthread%2Fb6c26a33f5ebd3e0%3Fhl%3Den%26#doc_5966ecb98c4ad8a6

Not what I need right now :( That there talks a lot about the 
implementation aspects - Tcl_Objs and stringReps and generation counters 
and whatHaveYou.

What I am missing is the perspective of the script writer - the changes 
(if any) to Tcl.n, the manpage for whatever new commands you'll define, 
manpage changes elsewhere.

IOW, I cannot process the "how do we get there" until I really grokked 
where "there" is. Not requesting that you write all of that s**t for me, 
but could use some help in getting the big picture.

Cheers
Miguel