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

[Chet Ramey]

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.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/