Re: [Bug-tar] transform with add-file seems broken

[Stas Sergeev]

26.07.2017 17:59, Dominique Martinet пишет:
> Hi,
>
> Stas Sergeev wrote on Wed, Jul 26, 2017 at 05:22:56PM +0300:
> > I am doing the following:
> >
> > $ tar cf a.tar a.txt
> > $ tar rf a.tar --add-file=`pwd`/b.txt --transform=s,`pwd`/,aaa/,
> > tar: Removing leading `/' from member names
> >
> > The transform is completely ignored, and
> > tar complains to leading slash.
> > But the following case works fine:
> >
> > $ tar cf a.tar a.txt
> > $ tar rf a.tar --add-file=b.txt --transform=s,^,aaa/,
> >
> > Am I doing something wrong, or is it a bug?
> The problem is as tar says, due to the leading /.
>
> Say you're in /tmp, the added file will be tmp/b.txt but you are
> matching /tmp/b.txt
Why wouldn't tar do its sanity checks and
leading slash removal after the transform,
not before? I wanted to do the transform
exactly to get rid of the leading slash and
the entire path.