Re: Is this intended behavior??

[Chet Ramey]

On 2/11/13 2:25 PM, Bruce Korb wrote:
>> /tmp
>> $ echo "$PS1"
>> \w\n\$ 
>> /tmp
>> $ mkdir -p ZZ/a/b/c
>> /tmp
>> $ pushd ZZ
>> /tmp/ZZ /tmp
>> /tmp/ZZ
>> $ pushd a
>> /tmp/ZZ/a /tmp/ZZ /tmp
>> /tmp/ZZ/a
>> $ pushd b/c
>> /tmp/ZZ/a/b/c /tmp/ZZ/a /tmp/ZZ /tmp
>> /tmp/ZZ/a/b/c
>> $ popd /var/tmp
>> /tmp/ZZ/a/b/c /tmp/ZZ/a /tmp/ZZ
>> /tmp/ZZ/a/b/c
>> $ popd /var/tmp
>> /tmp/ZZ/a/b/c /tmp/ZZ/a
>> /tmp/ZZ/a/b/c
>> $ 
> 
> It is behaving as if it were seeing the "-0" option.

It's unspecified behavior.  popd doesn't take any `non-option' arguments.
As soon as you specify one, you can't really expect to know what will
happen without experimentation or reading the source.

/var/tmp gets translated to the equivalent of -0 (if you're curious, it's
because `/' isn't `+' and the default directory index is 0).

It should probably be an error instead.

Chet

-- 
``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/