R help - Apr 2014 - generic function-method arguments accessible by tab-key

Hi,

I have the following problem:
  
I wrote a Generic Function that comes with a bunch of different methods and
even more arguments. 
It's kind like this:

  if ( !isGeneric("v") ) {
    setGeneric("v", function(x, ...)
      standardGeneric("v"))
  }

setMethod('v', signature(x='character'), 
          function(x,...){
            print(x)
          }
)



So what I don't know is how to porgram the function in a way that when
typing the function in the R-console one can see all available arguments,
using the 'tab-key' for all the different methods of the function that
are
actually masked by the three dots, like:
as.matrix(

so that I see: as.matrix(x                                 ... 
                                 row.names.force= 
                                 sep= 
                                 byrow
another example is the generic function that shows all arguments is the
plot()-function

I figured out that these functions come with different subfunctions, like
as.matrix.default, as.matrix.spam, but when adding a sub.function: v.print,
the arguments do not show up by the v:

v.print <- function(x,y='',z=''){
print(paste(x,y,z))
}


i thought to link the v and the v.print function, but this did not bring the
anticipated result neither:
  
  if ( !isGeneric("v") ) {
    setGeneric("v", function(x, ...)
      standardGeneric("v"))
  }

setMethod('v', signature(x='character'), 
          function(x,y=x,z=x){
            v.print(x,y=y,z=z)
          }
)
  
  
maybe that's not the right way... any ideas?
thx very much in advance!

robert



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just a note i liked to add:
so the idea is just to have the optional arguments y and z showing up in the
the v-function call using the tab-key



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