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

[Chet Ramey]

On 2/8/16 10:36 AM, Andreas Schwab wrote:
> Chet Ramey <chet.ramey@case.edu> writes:
> 
>> 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.
> 
> Sorry, I misread the OP's message.  I didn't notice it's about the
> parent's parent, not the parent.

It's still an unlikely scenario.

-- 
``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/