bug#30217: Ambiguity in NEWS in emacs-26.0.91

[Drew Adams]

> In the new NEWS in the recent pretest, at L1381 we have:
> 
>     ** To avoid confusion caused by "smart quotes", the reader no longer
>     accepts Lisp symbols which begin with the following quotation
>     characters: `'""   , unless they are escaped with backslash.
>                                      ^^^^
> 
> , which leaves it unclear whether it's the "smart quotes" or the Lisp
> symbols which need escaping.
> 
> I suggest replacing "they" with either "these quotes" or "these symbols"
> depending on the desired meaning.

Even if that ambiguity gets resolved, I have no idea what
the text means.  What does it mean for the Lisp reader to
"accept a Lisp symbol"?

Please describe exactly what the reader does when it reads
one of those characters followed by Lisp-symbol syntax, in
both cases: char escaped and char not escaped.