bug#64866: 30.0.50; Emacsclient block for 2 seconds when error is raised from command

[Eli Zaretskii]

> Date: Wed, 26 Jul 2023 12:48:38 -0700
> Cc: 64866@debbugs.gnu.org, yikai@z1k.dev
> From: Jim Porter <jporterbugs@gmail.com>
> 
> On 7/26/2023 11:48 AM, Eli Zaretskii wrote:
> > Why did you think it should?  According to its documentation it only
> > affects minibuffer-message.  The 2-sec delay in the above case is done
> > by an explicit call to sit-for with a hard-coded argument of 2 sec.
> > See server-return-error.
> 
> Thanks for the pointer to this code. Looking at it, it doesn't seem easy 
> to avoid this delay without causing the problems that you've mentioned.

Yes, see bug#63629 for the problems that code attempts to solve.