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

[Richard Stallman]

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > The problem is that deciding which characters are confusable and hence
  > require backslash escaping is based on a shifting mess of heuristics.
  > So I don't think it's workable to signal a hard error for this. Both
  > in terms of false positives which could mean possibly breaking code,
  > and false negatives which means we would be giving a false sense of
  > security.

In principle, that\s a valid point.  But can't we assembe a fixed list
of characters that are confusable with the usual fonts. and base the
warning on that list?

We could conceivably have a feature that would check any fontset for
confusable characters, and warn the user if it has confusable pairs
that are not in the usual list of confusable pairs.

-- 
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)