On 2/8/16 10:36 AM, Andreas Schwab wrote:
> Chet Ramey <chet.ra...@case.edu> writes:
>
>> On 2/8/16 9:59 AM, Andreas Schwab wrote:
>>> Chet Ramey <chet.ra...@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 c...@case.edu http://cnswww.cns.cwru.edu/~chet/
