Any interest in "merge" and "by" implementations specifically for sorted data?

Hi,

I was using my installed R which is 2.3.1 for the first tests.  I  
moved to the r-devel tree (I svn up and rebuild everyday) for my "by"  
tests to see if it would work any better.  I neglected to retest  
"merge" with the devel version.

So it appears "merge" is already fixed and I just need to worry about  
"by".

Which version of R are you looking at?   R-devel has

    o	merge() works more efficiently when there are relatively few
	matches between the data frames (for example, for 1-1
	matching).  The order of the result is changed for 'sort = FALSE'.

Thanks,

Kevin