Jens,
On Sep 18, 2009, at 15:08 , Jens Oehlschl=E4gel wrote:
> Mmh,
>
>>> Point is, I gather, that trailing slashes are removed, e.g.,
>>>
>>> viggo:~/>basename foo/
>>> foo
>>>
>>> So, not a bug.
>
> This unfortunately means that we cannot distinguish between
> 1) a path with a filename
> 2) a path without a filename
>
Of course you can - but that's unrelated to the bug report.
> For example in the next version of the ff-package we allow a user to =20=
> specify a 'pattern' for all files of a ff dataframe which is path =20
> together with a fileprefix, the above means we cannot specify an =20
> empty prefix "" for the current working directory, because
>
>> dirname("./.")
> [1] "."
>> basename("./.")
> [1] "."
>> dirname("./")
> [1] "."
>> basename("./")
> [1] "."
>
I don't see the connection - I would suggest you read the IEEE Std =20
1003.1-2001 which defines the behavior of basename (and the R =20
documentation for basename clearly states the behavior as well). The =20=
fact that you are trying to use the wrong tool for your purpose =20
doesn't mean that the tool is broken. I would advise you to ask on R-=20
help how to implement your pattern specification (just FWIW it's non-=20
standard and requirement of trailing slashes does lead to very nasty =20
problems for the user).
Cheers,
Simon
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