If you don't use click-to-focus, Emacs can gain and lose focus every time
you move the mouse, even inadvertently. It would be very bad for this to
have any lasting effect. I think such hooks should not exist.

Hello, Dr. Stallman.

Thank you for your thoughtful feedback.

I agree that it may not make sense for users in focus-follows-mouse

environments to use these hooks. I don't think it follows that these

hooks should not exist. They default to nil -- people who don't want

them don't have to use them.

There is a large class of programmers (web developers) who expect their

editor to *be able* to behave this way. True, they will need to take

responsibility not to break their environments by abusing these hooks,

but Emacs already requires a degree of responsibility from those

configuring it.

Perhaps I am misunderstanding how hooks are run? I have assumed that

running a nil hook is a no-op. If not, perhaps we can add a check to

the C event handler and call Frun_hooks only if the hook has been set?

I'm not trying to force anyone to run lisp on focus change. I'm hoping

to encourage wider use of Emacs in the web development communities.

Best,

Brian Jenkins