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Re: `cd .` in non-existent directory leads into weird corner case
- X-seq: zsh-users 16947
- From: Mikael Magnusson <mikachu@xxxxxxxxx>
- To: Richard Hartmann <richih.mailinglist@xxxxxxxxx>
- Subject: Re: `cd .` in non-existent directory leads into weird corner case
- Date: Mon, 2 Apr 2012 12:15:59 +0200
- Cc: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>, zsh-users@xxxxxxx
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On 2 April 2012 11:52, Richard Hartmann <richih.mailinglist@xxxxxxxxx> wrote:
> On Tue, Mar 27, 2012 at 16:34, Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx> wrote:
>> However, I've always been a little puzzled about the decision to set
>> $PWD to "." in this case. Bash remembers the relative location:
> Just to make sure this does not get lost, do we agree that not
> changing $PWD to a literal dot would make sense? Escalating the ENOENT
> to the user is probably the best approach.
Weird, when I try making a directory and remove it, I can still cd ..
to the parent... I can even cd into the dir with another shell (via
/proc/$$/cwd), and cd .. to the correct parent dir from that other
> Various external commands such as "ls" silently exit with success on a
> non-existent current working directory, I think that may have been the
> model for the original behavior.
They succeed silently because the directory exists and is empty.
% stat .
Size: 6 Blocks: 0 IO Block: 4096 directory
Device: 811h/2065d Inode: 299438815 Links: 0
Access: (0755/drwxr-xr-x) Uid: ( 1000/ mikachu) Gid: ( 100/ users)
Access: 2012-04-02 12:12:26.696856559 +0200
Modify: 2012-04-02 12:12:26.696856559 +0200
Change: 2012-04-02 12:12:31.260107270 +0200
When I try bart's double-directory trick, I can still cd .. twice and
get back to the correct grandparent directory.
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