[BioC] RBGL, shortest paths, edge weights, and the new graph class

[Paul Shannon]

It looks as if some of the RBGL functions ('sp.between' for example)  
depend
upon the old graph class, pre 1.10, in which edge weights were
an obligatory attribute.

sp.between (g, 'F', 'L')
Error in if (any(eWW[eWW < 0])) stop("sp.between requies that all  
edge weights are nonnegative") :
         missing value where TRUE/FALSE needed


sp.between <- function (g, start, finish)
{
    ...
   eW = edgeWeights(g)
   eWW <- unlist(eW)
   if (any(eWW[eWW < 0]))
     stop("sp.between requies that all edge weights are nonnegative")


Is there any plan to accommodate the new 'weightless' graph class  
design?
Or is there any workaround anybody can suggest?

Thanks!

  - Paul