On Feb 22, 2015 4:18 PM, "Stefan Monnier" <monnier@iro.umontreal.ca> wrote:
>
> > There's also the disadvantage that it adds a symbol-property check to
> > every `defvar' call.
>
> That's a fairly significant disadvantage.

Yes. We can also just throw an error if the variable isn't defined, like
every other function out there.

We can do that as a new function, `add-to-hook', and slowly obsolete
add-hook.

> Another problem is that defvar may simply never be called.

But isn't it a bug to run-hooks a variable that was never explicitly
defined?