Re: cl-macro-expandall symbol definition is void

["Jostein Kjønigsen" <jostein@secure.kjonigsen.net>]

If you're attempt to open some C#-files using the current Emacs 24.4
Windows-build, a bug in cc-defs.el is triggered during the
initialization of csharp-mode, and the mode fails to load.

This code here, while not the "production" fix, illustrates what goes
wrong:
https://gist.github.com/bsuh/f8b12b0d7e15f75f9a7c

The current fix in the repo can be found here:

237bf45a (Stefan Monnier      2014-10-29 23:50:15 -0400  177)
(eval-and-compile
237bf45a (Stefan Monnier      2014-10-29 23:50:15 -0400  178)  
(defalias 'c--macroexpand-all
237bf45a (Stefan Monnier      2014-10-29 23:50:15 -0400  179)     (if
(fboundp 'macroexpand-all)
237bf45a (Stefan Monnier      2014-10-29 23:50:15 -0400  180)        
'macroexpand-all 'cl-macroexpand-all)))

That commit should (hopefully) contain the rest of the patching needed,
but it's mostly just applying the wrapper function instead of
cl-macroexpand-all directly.

Any chance of getting a new 24.4 build built for the Windows-users with
this patch built in?

-- 
Jostein Kjønigsen
jostein@kjonigsen.net / jostein@secure.kjonigsen.net


> So, does anyone know about csharp-mode and why it would give me this
> error?

I think I have some idea of what's the underlying problem (in cc-mode,
used by csharp-mode).  Try:

    emacs --debug-init

and hopefully you'll get a backtrace.  In any case, open a bug with `M-x
report-emacs-bug` so we can track it there.


        Stefan