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

[Drew Adams]

> > ...  But only if they need to use a
> > symbol named "," normally inside backquote -- a
> > rare case, surely.
> 
> I recall one user had a need to macro-expand something that indented to
> be passed to another macro-expand. We did not find a way to retain ","
> in the macro-expanded sexp.

Thanks.  All the more reason why it would be good
for the bug to be fixed.  It may be a corner case,
but apparently it really exists.

[I'm guessing Emacs autocorrected "intended" to
"indented".]