[Rd] available.packages (PR#9841)

zivan.karaman at gmail.com zivan.karaman at gmail.com
Fri Aug 10 18:09:17 CEST 2007

Full_Name: Zivan Karaman
Version: 2.5.1
OS: Windows XP SP2
Submission from: (NULL) (

I think that I have encountered a bug in the function "available.packages" when
using a local repository (file://
) on Windows.

Version information:
platform       i386-pc-mingw32             
arch           i386                        
os             mingw32                     
system         i386, mingw32               
major          2                           
minor          5.1                         
year           2007                        
month          06                          
day            27                          
svn rev        42083                       
language       R                           
version.string R version 2.5.1 (2007-06-27)

I have made a copy of the CRAN "/bin/windows/contrib/2.5" directory in the
"D:/CRAN" folder on my machine.

When I issue the command:


I get the follwoing message:
Error in gzfile(file, "r") : unable to open connection
In addition: Warning message:
cannot open compressed file ':/CRAN/bin/windows/contrib/2.5/PACKAGES' in:
gzfile(file, "r")

Looking at the source code, I've spotted the following lines which seem to cause

            if (.Platform$OS.type == "windows") {
                if (length(grep("[A-Za-z]:", tmpf))) 
                  tmpf <- substring(tmpf, 2)
Deleting them, the function works OK.

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