bug#65620: void function edebug-after

[Gerd Möllmann]

Alan Mackenzie <acm@muc.de> writes:

> Here's a working patch with a slight improvement: the error message
> identifies the macro suspected of having an erroneous edebug spec.

Maybe we could also add to the comment for edebug-before that basically
any of the instrumented form in the context you describe can lead to
errors?

I believe, if IFORM is such an instrumented form, something like

   (let ((x IFORM))
     ...)

in some macro will also error. 

Otherwise, LGTM.  Thanks for doing this!