Re: JIT stealth font-lock tuning parameters

[Richard Stallman]

    OK, so syntax-ppss need to check for such a special return value
    and when found, should pass it up to font-lock which should also check
    for it and pass it up to jit-lock.

    Why would that be better than using a non-local exit like `throw'
    or `signal' ?

Using throw to report this condition might be ok.  But not signal;
that is for reporting errors and things like errors.  This is not an
error.