I was just wondering if there is already a Bioconductor function somewhere that takes GRanges and outputs browser-friendly coordinates.  For instance:

iranges2name <- function(IR)
  paste(start(IR), end(IR), sep="-")

granges2name <- function(GR)
  paste(seqnames(GR), iranges2name(GR), sep=":")

granges2name(gr2)

 [1] "chr1:1-5"   "chr1:2-6"   "chr1:3-7"   "chr2:4-8"   "chr2:5-9"  
 [6] "chr2:6-10"  "chr3:7-11"  "chr3:8-12"  "chr3:9-13"  "chr3:10-14"

(Where gr2 was generated with "example(GRanges)").

I thought I was reinventing the wheel, but my favourite search engines did not return anything relevant to me.

It's just as.character(gr2).