Re: Small shell-mode patch to handle auto-cd (e.g. shells like zsh)

[Jason Kim <jason.w.kim@icloud.com>]

On 5/7/21 11:36 PM, Eli Zaretskii wrote:
>> Cc: emacs-devel@gnu.org, shivers@cs.cmu.edu, jason.kim@revtera.com
>> From: Jason Kim <jason.w.kim@icloud.com>
>> Date: Fri, 7 May 2021 09:35:16 -0700
>>
>>> Should this variable's value be computed automatically based on the
>>> shell's name?
>>
>> I don't think so... If only because its an option that needs enabling in
>> zsh as well?
> 
> Sorry, I don't think I understand.  My understanding was that this
> feature is supported by some shells whose names are known in advance
> (like zsh), so Emacs could compute the value as appropriate for that
> shell without asking the user to set it.  If this is not a good idea,
> can you explain why?
> 

Hi, sorry for the confusion -
auto-cd feature in zsh is optional. It is not on by default, and I don't 
know of a good way to detect whether a zsh process tied to a shell 
buffer has that option turned on.

I think having this as a switch that individual users can set is 
probably the simplest way to handle this. AFAIK other common shells 
(bash, csh) doesn't yet have this feature either. In other words, it's 
the user's choice to use zsh, and the user's choice whether to turn that 
feature on.

I do cd's all the time (prolly same for most folks), and I hate 
repeatedly typing a command to do it, so it's a neat feature in zsh that 
would be nice to support within emacs shell mode.

Thanks for reading.
I hope I made it clear.


Thank you!
-Jason

> Thanks.
>