sort bug?

[Julie Weeds]

Hi,

When using sort (provided with coreutils-4.5.3 but I can't see any updates 
in later versions that would fix this), I get the following set of lines as 
being supposedly sorted:

"ad"  "NN+nounmod+N"        "tobacco"     1
"ad"  "NN+nounmod+N"        "tv"  13
"ad"  "NN+nounmod+N"        "wheat"       1
"adn" "NN+subject+V"        "beed"        1
"ad"  "NN+object+V" "accept"      1
"ad"  "NN+object+V" "afford"      1
"ad"  "NN+object+V" "alter"       1
"ad"  "NN+object+V" "answer"      2
"ad"  "NN+object+V" "assess"      1
"ad"  "NN+object+V" "create"      1

Is there a reason why the line containing "adn" is in the middle of the 
"ad" lines, or is this a bug?  Incidentally, I have tried using sort -d as 
well as sort and get the same thing.  Also, I have used sort on unix and 
under cygwin, and don't get this effect, the "adn" line is placed last (as 
I would expect).

Thanks very much,

Julie
-----------------------------------
Dr Julie Weeds
Department of Informatics
University of Sussex, Brighton, UK