Re: Change of Lisp syntax for "fancy" quotes in Emacs 27?

[Paul Eggert]

On 02/02/2018 04:00 PM, Drew Adams wrote:
> The distinction I think needs to be made is between:
>
> 1. Trying to_warn users_  (all users, less-expert or not)
>     about possible misuse of particularly confusable chars.
>     This just warns about possible pilot error.
>
> 2._Changing Lisp_  reading and evaluating, to treat some
>     (all?) confusable characters specially, changing their
>     syntax and requiring them to be escaped in order to be
>     treated normally (i.e., as they have been treated so far).
>
> I object to #2, NOT to #1.

I don't see a clear distinction between #1 and #2. For example, in an 
adversarial environment, users who get warned about suspicious 
characters in their incoming source files will most likely type "no" 
when asked to run such code. In that case, if you want your audience to 
include users who care even a smidgen about security, you'll need to 
escape confusable characters in the business parts of your Emacs Lisp 
code. Effectively that will be a change to Emacs Lisp, even if its 
formal syntax does not change.