On setting OLDPWD

On setting OLDPWD

[Christian Neukirchen]

Hi,

I'm using this small snippet to persist and share my dirstack across
multiple zsh:


DIRSTACKSIZE=9
DIRSTACKFILE=~/.zdirs
if [[ -f $DIRSTACKFILE ]] && [[ $#dirstack -eq 0 ]]; then
  dirstack=( ${(f)"$(< $DIRSTACKFILE)"} )
  [[ -d $dirstack[1] ]] && cd $dirstack[1] && cd $OLDPWD
fi
chpwd() {
  local -a dirs; dirs=( "$PWD" ${(f)"$(< $DIRSTACKFILE)"} )
  print -l ${${(u)dirs}[0,$DIRSTACKSIZE]} >$DIRSTACKFILE
}


This works very nicely, except for the case $dirstack[1] is on a "stuck"
directory (e.g. a stale NFS or a broken FUSE device).  In that case,
zsh nicely locks up during start.

Is there any way to change where "cd -" would go to, without actually
cd'ing there? (Setting dirstack is not enough, it works for "cd -1" but
not for "cd -".  Setting OLDPWD doesn't help either.)

Ideas?
-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org

Re: On setting OLDPWD

[Bart Schaefer]

On Jan 10,  8:15pm, Christian Neukirchen wrote:
}
} Is there any way to change where "cd -" would go to, without actually
} cd'ing there?

No, there isn't.  "cd -" uses a directory name stored in an internal
data field.  The value of $OLDPWD is reset to the same string as that
internal field upon each change of directory, but is not tied to it
in any other way; only the "cd" command (and its relatives) alter it.