Re: [PATCH] Unicode Lisp reader escapes

[Richard Stallman]

Regarding \u: the question is whether an Emacs escape for Unicode
characters should be compatible with C string syntax for Unicode
characters, or coherent with the Emacs \x escape.

I think one relevant question is to what extent the C and Emacs Lisp
string syntax are compatible in the first place.  Emacs Lisp string
syntax was largely based on C string syntax in 1984, but I don't know
how C has developed since 1990.  Can someone report on this question?