Re: [Rd] Reorganization of packages in the R distribution

[Paul Gilbert]

If  I understand this change correctly, I think is wrong for R-core to 
think it is a small change. It has much more serious consequences for me 
than any changes introduced  R 1.0. It definitely should not be 
introduced at a dot level release unless there is a fairly simple 
mechanism to deal with the implications. It breaks  6 of my 9 packages 
on CRAN at a fairly fundamental level,  2 more at a less serious level,  
and some packages I have not yet release.

Perhaps my programming technique is not correct. I always considered 
this trick to be a work-around for a short coming in R/S.   The issue is 
that the correct way to do this needs to be implemented before the trick 
that allows a work-around is eliminated.

Paul Gilbert

Prof Brian Ripley wrote:

On Fri, 12 Dec 2003, Paul Gilbert wrote:

 

Prof Brian Ripley wrote:

   

There are a small number of CRAN packages that attempt to modify system
functions and so will need updating.  (Known examples are in dse:tframe,
gregmisc and mclust and some testing code elsewhere.)
     

Brian

What do you mean by "updating?"  In tframe I modify a few functions like

    start <- function (x, ...) if (is.Ttframed(x)) start(tframe(x), 
...) else UseMethod("start")

If that can no longer be done then this is a serious fundamental change 
that breaks all my code. I hope that is not what you mean. I'm just 
going away for a week, but will follow up when I return.
   

It's always been incorrect code, and it no longer works.  You should not
be masking system generics, as the namespace registration mechanism does
not work on your version.
 

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