R devel - Jun 2020 - "R CMD Sweave --driver=..." woes

In trying to change the driver used by Sweave on the command line using 

   R CMD Sweave --driver=foo

I consistently get the "directory 'foo' does not exist' error.
(For any value of 'foo', even the default 'RweaveLatex'.)

Looking up the source code for function .Sweave that is called by 'R CMD
Sweave', I notice that the argument 'driver', if used, is added to
the vector of arguments of ''buildVignette' without being named. It
ends up being passed to argument 'dir', hence rhe error.

I believe the simple patch below should fix the issue, but I wasn't able to
test it.

Hope this helps.

v.

Vincent Goulet
Professeur titulaire
?cole d'actuariat, Universit? Laval


Index: src/library/utils/R/Sweave.R
==================================================================---
src/library/utils/R/Sweave.R	(revision 78746)
+++ src/library/utils/R/Sweave.R	(working copy)
@@ -516,7 +516,7 @@
        do_exit(1L)
    }
    args <- list(file=file, tangle=FALSE, latex=toPDF, engine=engine,
clean=clean)
-    if(nzchar(driver)) args <- c(args, driver)
+    if(nzchar(driver)) args <- c(args, driver=driver)
    args <- c(args, encoding = encoding)
    if(nzchar(options)) {
        opts <- eval(str2expression(paste0("list(", options,
")")))

>>>>> Vincent Goulet via R-devel writes:
Thanks: fixed now in the trunk with c78751.

Best
-k
> In trying to change the driver used by Sweave on the command line using 
>    R CMD Sweave --driver=foo
> I consistently get the "directory 'foo' does not exist'
error. (For any value of 'foo', even the default 'RweaveLatex'.)
> Looking up the source code for function .Sweave that is called by 'R
CMD Sweave', I notice that the argument 'driver', if used, is added
to the vector of arguments of ''buildVignette' without being named.
It ends up being passed to argument 'dir', hence rhe error.
> I believe the simple patch below should fix the issue, but I wasn't
able to test it.
> Hope this helps.
> v.
> Vincent Goulet
> Professeur titulaire
> ?cole d'actuariat, Universit? Laval
> Index: src/library/utils/R/Sweave.R
> ==================================================================> ---
src/library/utils/R/Sweave.R	(revision 78746)
> +++ src/library/utils/R/Sweave.R	(working copy)
> @@ -516,7 +516,7 @@
>         do_exit(1L)
>     }
>     args <- list(file=file, tangle=FALSE, latex=toPDF, engine=engine,
clean=clean)
> -    if(nzchar(driver)) args <- c(args, driver)
> +    if(nzchar(driver)) args <- c(args, driver=driver)
>     args <- c(args, encoding = encoding)
>     if(nzchar(options)) {
>         opts <- eval(str2expression(paste0("list(", options,
")")))
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