On 05/15/2016 11:43 AM, Stefan Monnier wrote:
> I don't think you can do it in a backward-compatible way.
> Which is why buffer-substring--filter still uses with-wrapper-hook (but
> only to implement the obsolete filter-buffer-substring-functions variable).

OK, thanks, how about the attached patch instead? The idea is to pacify 
the byte compiler without attempting to use add-function, by creating an 
internal-use-only version of the obsolete macro, a version that does not 
generate the warnings.