Re: [PATCH] Unicode Lisp reader escapes

[Richard Stallman]

    They are both fixed-length expressions, which is good, because people get 
    into the habit of typing "\u0123As I walked out one evening" instead of the 
    more disastrous "\u123As I walked out one evening".

I see, you are talking about using them in strings.
Still, I don't like having both \u and \U--it is ugly.

I think it would be better to put an explicit terminator into
the construct.  Perhaps #.  So you would write "\u123#As I walked"