Hi Dirk,
You are right. My current zlib1g version is 1:1.2.3.4.dfsg-2.
It works well with zlib1g 1:1.2.3.3.dfsg-15.
With zlib1g 1:1.2.3.4.dfsg-2,
> readLines(gzfile(system.file("DESCRIPTION", package="lattice")))
character(0)
Sincerely,
Chenliang Xu
On Mon, Dec 28, 2009 at 8:24 PM, Dirk Eddelbuettel <e...@debian.org> wrote:
>
> ChenLiang, Johannes, Ben,
>
> Thank you all for pushing the bug report further. That is something we ought
> to bring to R Core's attention, but maybe a little home work is needed.
>
> On 28 December 2009 at 14:23, ChenLiang Xu wrote:
> | Hi,
> |
> | I met similar problems when installing packages from CRAN.
> |
> | It seems to be related with the function gzfile, which used by read.dcf
> | I tried the following command,
> |
> | > read.dcf(system.file("DESCRIPTION", package="lattice"), "Package")
> | Error in read.dcf(system.file("DESCRIPTION", package = "lattice"),
> "Package") :
> | Line starting 'P ...' is malformed!
> |
> | > thefile <- gzfile(system.file("DESCRIPTION", package="lattice"))
> | > read.dcf(thefile, "Package")
> | Error in read.dcf(thefile, "Package") :
> | Line starting 'P ...' is malformed!
> |
> | > thefile <- file(system.file("DESCRIPTION", package="lattice"))
> | > read.dcf(thefile, "Package")
> | Package
> | [1,] "lattice"
>
> So without it, it works. With gzfile(), it dies. And gzfile() is invoked
> unconditionally at the top.
>
> Question now is whether that is a recent change or not. I only see something
> related to 2.10.0 in NEWS:
>
> o gzfile() looks at the file header and so can now also read
> bzip2-ed files and xz-compressed files.
>
> which makes me think that this should have blown up earlier.
>
> On the other hand, the library for gzip (zlib) is something where Debian
> could be different which is wht 'we' see the bug and nobody else. What do
> you have on sid -- I have
>
> ii zlib1g 1:1.2.3.3.dfsg-15 compression library - runtime
> ii zlib1g-dev 1:1.2.3.3.dfsg-15 compression library -
> development
>
> and 'apt-cache policy' leads to a newer version on unstable (1:2.3.4.dfsg-15)
>
> Can you downgrade zlib1g and see if this persists?
>
> Dirk, hopeful we have a smoking gun
>
> --
> Three out of two people have difficulties with fractions.
>
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