Sorry for the delay in response!
Thank you (especially to Eli!) for your guidance.

I set :version to "28", but I don't see an issue with applying this 
patch to earlier versions.

All of the nits are I think fixed.

Please find enclosed new format-patch patch.

Thanks again!
-Jason

On 5/15/21 1:20 AM, 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 09:51:08 -0700
>>
>> Hi, enclosed is what I hope is an acceptable git-format-patch for this
>> tiny change.
>>
>> If not, please let me know how to fix!
> 
> Applying these patches produces the following byte-compilation
> warnings:
> 
>     ELC      shell.elc
> 
>   In toplevel form:
>   shell.el:324:1: Warning: defcustom for `shell-has-auto-cd' fails to specify
>       type
>   shell.el:324:1: Warning: custom-declare-variable `shell-has-auto-cd' docstring
>       wider than 80 characters
> 
> In addition, please provide a :version tag for the new defcustom.
> 
> And finally, the commit log message should include ChangeLog-style
> description of the file(s) and functions/variables which were affected
> by the changes, see the existing log messages and the advice in
> CONTRIBUTE for more details.
> 
> Please fix those minor nits, and then we will be able to install the
> changes.
> 
> Thanks.
>