[Rd] Patching "update.packages" to enable updating of only a user defined subset of packages

[Sharpie]

Tal Galili wrote:
> 
> Hello dear R developers,
> 
> I recently found out that it is not possible to limit update.packages() to
> update only a few packages at a time.
> 
> The patch offered simply adds a 'subset' parameter and the statement
> bounded
> within "if(!missing(subset))" to implement it.
> The code is pasted bellow (and also attached as an .r file).
> 
> Might this patch be considered valuable to be added to R?
> 
> 
> (in the code bellow I called the function "update.packages.2" so to not
> mask
> the original update.packages)
> 
> 
> With much respect,
> Tal
> 

Hi Tal,

I think if you pass a character vector in the `oldPkgs` argument of
update.packages, it will only consider packages in that list for updating.

-Charlie


-----
Charlie Sharpsteen
Undergraduate-- Environmental Resources Engineering
Humboldt State University
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