Re: bug when 'cd ..' to a directory who's parent has been deleted

[Linda Walsh]

Chet Ramey wrote:
> On 2/8/16 9:59 AM, Andreas Schwab wrote:
>   
> > Chet Ramey <chet.ramey@case.edu> writes:
> >
> >     
> > > `cd ..' should fail, since the parent no longer exists, and the pathname
> > > canonicalization should fail, since there's presumably no longer a valid
> > > path to reach the current directory.  No value for $PWD is correct.
> > >       
> > ${PWD%/*} would be a reasonable value.  FWIW, this is what ksh uses in
> > this case, it doesn't fail.
> >     
>
> Why would that be more reasonable than anything else?  It references a
> path that doesn't exist.
>
>   
Um...Not exactly.  As long as there's a handle open to the previous path,
it still exists (at least on linux and unix).