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


From: Chet Ramey
Subject: Re: bug when 'cd ..' to a directory who's parent has been deleted
Date: Mon, 8 Feb 2016 10:38:45 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.5.1

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



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