[Rd] crash bug in get("function.name")() (PR#1211)

[Rich Heiberger]

I tried the same exercise in S-Plus 6.  S-Plus 6 rejects any direct use
of a method.  It requires use of the generic.  It provides an error message
that might make sense to us, but probably not to a user.  The message
is consistent with Luke's intuition of coming into the middle of a sequence
that was not properly initiated with UseMethod.

Professional Edition Version 6.0.3 Release 2 for Microsoft Windows : 2001 

> tmp <- factor(1:3)
> tmp
[1] 1 2 3
> print.factor(tmp)
Warning messages:
  the "..." object should be a list but has mode "missing"
Problem in NextMethod("print", quote = quote): argument "..1" is missing with no default 
Use traceback() to see the call stack
> get("print.factor")(tmp)
Warning messages:
  the "..." object should be a list but has mode "missing"
Problem in NextMethod("print", quote = quote): argument "..1" is missing with no default 
Use traceback() to see the call stack
> 
> get("print")(tmp)
[1] 1 2 3
>

Rich
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