changing gzip's symlink handling to be consistent with bzip2, xz and GNU gzip

[Alexander Best]

On Mon Nov 15 10, Alexander Best wrote:
> On Mon Nov 15 10, Xin LI wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA256
> > 
> > Hi,
> > 
> > On 11/15/10 10:24, Alexander Best wrote:
> > > hi there,
> > > 
> > > any thoughts on this patch? it changes the semantics of gzip so that it is
> > > consistent with the semantics of bzip2, xz and for more important GNU gzip.
> > 
> > Could you please elaborate more about the GNU gzip behavior?
> > 
> > By the way I also found some difference between BSD gzip and GNU gzip:
> > 
> > touch foo
> > ln -s foo.nonexistent foo.gz
> > 
> > gzip foo
> > gzip: could not create output: foo.gz: File exists
> > 
> > /usr/local/bin/gzip foo
> > gzip: foo.gz already exists; do you wish to overwrite (y or n)? ^C
> > (case 1)
> 
> ^^ confirmed!
> > 
> > echo | /usr/local/bin/gzip foo
> > gzip: foo.gz already exists;	not overwritten
> 
> ^^ this is only the GNU output. however bsd gzip seems to behave the same
> > 
> > gzip -f foo
> > gzip: could not create output: foo.gz: File exists
> > 
> > /usr/local/bin/gzip -f foo
> > (succeeded; case 2).
> 
> ^^ confirmed!
> 
> it appears the designers of BSD gzip did not take symbolic links into account.
> 

sorry i messed up the subject line and your mail address in my previous
message. i've fixed it in this one.

cheers.
alex

> cheers.
> alex
> 
> > 
> > 
> > Cheers,
> > - -- 
> > Xin LI <delphij at delphij.net>	http://www.delphij.net/
> > FreeBSD - The Power to Serve!	       Live free or die
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> -- 
> a13x

-- 
a13x