[inlinedocs] Changes to source attribute in R-devel

[Duncan Murdoch]

To the inlinedocs maintainers:

I'm writing to you to warn you about some changes planned for R 2.14.0
(to be released at the end of October) that affect your inlinedocs package.

We are changing the way function source is attached to functions, so
code like

attr(fun.obj, "source")

will no longer work.  The following function should work in both
existing and upcoming versions:

getSource <- function(fun.obj) {
      srcref <- attr(fun.obj, "srcref")
      if (!is.null(srcref)) unlist(strsplit(as.character(srcref), "\n"))
      else attr(fun.obj, "source")
}

(You may not need the unlist(strsplit(...)) code; it just gives you the
same result as your old code did.  Without it there may be embedded
newlines in the result.)

Duncan Murdoch