bug#61281: “`(a \, b)” equals to “`(a . , b)”

[Jim Porter]

On 2/5/2023 4:18 PM, Michael Heerdegen wrote:
> Michael Heerdegen <michael_heerdegen@web.de> writes:
>
> > You mean the reader should emit a warning?  Note that at least
> > expressions printed by Emacs itself might be printed like this, e.g.
> >
> >    (nth 1 '`(a . ,b)) ==> (a \, b)
> >
> > so you would get warnings for automatically generated code.
>
> An example is even in the original report.

Well, that's what I get for trying to send a message shortly before 
going to sleep.

> Maybe the printer could be taught to print (... . ,X) in this form
> instead of (... \, X).

This would probably be nice though (assuming it's sufficiently easy). 
The current printing form would likely confuse a novice programmer if 
they encountered it.