bug#65902: 29.0.92; emacsclient-mail.desktop fails due to complicated escaping

[Eli Zaretskii]

> Date: Thu, 14 Sep 2023 14:48:14 +0000 (UTC)
> From: Spencer Baugh <sbaugh@catern.com>
> Cc: Spencer Baugh <sbaugh@janestreet.com>, jporterbugs@gmail.com,
>       65902@debbugs.gnu.org
> 
> Okay, if I do this without making modifications to emacsclient.c or the 
> server protocol, would that be
> more acceptable? The approach I described in another email, with 
> server-eval-args-left, all it adds is
> a new variable.

I cannot find the description of that approach.  What did it say?