Re: Fight: font-lock.el 1.289 vs. cc-defs.el

[Richard M. Stallman]

    I'm asking that this change to font-lock.el be reconsidered, though I
    admit I don't know the problem it fixes.

It detects a kind of problem that was hard to debug, when it occurred.
I decided we needed to make such problems show themselves.  I don't
remember the details, but there was probably another change around the
same time which fixed the specific problem.

    CC Mode calls (font-lock-compile-keywords "\\<\\>") at initialisation, to
    test for a bug in middle aged XEmacsen which splatted font-lock-keywords.
    The new check in V1.289 causes CC Mode to bail out with an error.

I suggest you test that condition only on XEmacs.