[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH] Fix hang if $OLDPWD points to inaccessible directory
From: |
Mikulas Patocka |
Subject: |
Re: [PATCH] Fix hang if $OLDPWD points to inaccessible directory |
Date: |
Tue, 3 Oct 2017 22:14:37 +0200 (CEST) |
User-agent: |
Alpine 2.02 (DEB 1266 2009-07-14) |
On Sun, 1 Oct 2017, Chet Ramey wrote:
> On 9/30/17 4:20 AM, Mikulas Patocka wrote:
>
> > Is there some reason why do we need to check if $OLDPWD is a real
> > directory? dash and ksh accept the $OLDPWD variable, but don't poke it
> > with the stat syscall. zsh clears $OLDPWD.
>
> It makes no sense to inherit it if it doesn't name a directory (or
> "pathname" in the Posix standard), other than the sort of lazy evaluation
> that will prevent your particular problem.
Does something bad happen if we inherit $OLDPWD that points to a
non-existing directory? Will some script malfunction because of it?
Mikulas
> This is the same reasoning that rejects inheriting PWD if it doesn't name
> the current directory.
>
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
> ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, UTech, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
>
- Bash should reset OLDPWD upon login, *only*., (continued)
- Bash should reset OLDPWD upon login, *only*., L A Walsh, 2017/10/01
- Re: Bash should reset OLDPWD upon login, *only*., Chet Ramey, 2017/10/02
- Re: Bash should reset OLDPWD upon login, *only*., Mikulas Patocka, 2017/10/03
- Re: Bash should reset OLDPWD upon login, *only*., Greg Wooledge, 2017/10/03
- Re: Bash should reset OLDPWD upon login, *only*., L A Walsh, 2017/10/03
- Re: Bash should reset OLDPWD upon login, *only*., Eduardo Bustamante, 2017/10/03
- Re: Bash should reset OLDPWD upon login, *only*., L A Walsh, 2017/10/03
Re: [PATCH] Fix hang if $OLDPWD points to inaccessible directory, Chet Ramey, 2017/10/01
- Re: [PATCH] Fix hang if $OLDPWD points to inaccessible directory,
Mikulas Patocka <=