outer fails with group generic operations on factors (PR#166)

[Peter Dalgaard BSA]

ripley@stats.ox.ac.uk writes:

> Browse[1]> FUN
> .Primitive("!=")
> 
> This _should_ launch Ops.factor, but does not.
> 
> > "!="(A, B)
> [1] FALSE FALSE
> > get("!=")(A, B)
> Warning: "" not meaningful for factors
> [1] NA NA
> 

Actually, it *does* launch Ops.factor, but it gets confused by garbage
in .Generic. The bug is this line in DispatchGroup:

    sprintf(generic, "%s", CHAR(PRINTNAME(CAR(call))));

which presumably should rather look at the "op" arg. 

I'll have a closer look.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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