Hi all!

This is my first post to the group. I’d been using tcsh as an 
interactive shell since way back when it was still cool, before zsh or 
bash even existed. Zsh is the first shell that’s a worthy successor. One 
of the small things that kept me from jumping to bash (along with 
everyone else in the Linux world) is that it doesn’t have a proper 
implementation of asynchronous notify of job completion (-b), which zsh 
does. Another thing that bugged me about bash was that there is no clean 
way to emulate tcsh’s dextract option, which rearranges the pushd stack 
differently. I eventually discovered that zsh can do the basic function 
through the cd/chdir builtin with the auto_pushd option set, but coding 
a pushd replacement function was complicated to get right for all option 
cases (see attached).

However, I found that adding this pushd mode to zsh natively was trivial 
(simply testing for the new option in one place), and I’m still baffled 
why it wasn’t included a long time ago while someone was looking for 
ways to increase compatibility with other shells. The attached patch 
(based on the current master branch) does just that, and I hope you see 
fit to merge it into the codebase. I believe I’ve done all the 
appropriate option handling, documentation, and unit test to make this 
painless. I didn’t write a ChangeLog entry since I wasn’t sure of the 
appropriate format, or how to derive the number. (Is that an SVN 
revision number?)

Tim