std library hooks

[Walter Bright]

On 4/15/2012 5:27 PM, Sean Kelly wrote:
> If you're overriding the one in the library then it has to be documented to
> have that name. It also has to live in its own section or you can have link
> errors.

Yes, that is correct.

> By comparison, hooks for commonly overridden things seems a bit
> easier.

I don't agree. Having a hook means you have to set up a pointer, document it, 
set up something to initialize the pointer, etc. In all, it seems to be more 
work both for the library implementer and the user.