Re: CC mode loads CL

[Martin Stjernholm]

Luc Teirlinck <address@hidden> wrote:

> However, "cc-defs.el" says that it must be loaded at runtime and
> contains:
>
> (cc-external-require 'cl)

True, that will pull in cl at runtime too.

> Or does cc-mode really need CL functions at runtime?

Three cl functions are currently used in cc-defs: mapcan,
cl-macroexpand, and delete-duplicates. They are only called at compile
time with one exception: The call to delete-duplicates in
c-make-keywords-re.

If you eliminate that call (or make it legitimate), it's safe to
remove the cc-external-require form and instead put in a

  (eval-when-compile (require 'cl))

at the top of the file.

I'd prefer if delete-duplicates or something close to it were added to
the core, of course.