bug#9054: 24.0.50; show source in other window

[martin rudalics]

> We desperately need to separate the help back-end from its presentation layer.
> The back-end should collect information and return it as alists.

Why as alists?  Who would generate the buffer text?

> And
> the front-end should display it in the *Help* buffer.

>> And Find Definition should allow to choose whether to do that
>> in another window/frame in the Context Menu.
>
> Wouldn't then the context menu grow too long?  Instead of current 3 items:
>
>    "Find Definition"
>    "Find References"
>    "Back Definition"
>
> it will show 3x3 items:
>
>    "Find Definition"
>    "Find References"
>    "Back Definition"
>    "Find Definition in another window"
>    "Find References in another window"
>    "Back Definition in another window"
>    "Find Definition in another frame"
>    "Find References in another frame"
>    "Back Definition in another frame"

Agreed.  Although "Back Definition" should already know the window it
should act upon.  So maybe use some modifier for the "another" window
click and explain it in the tooltip (which, IIRC we do not always show
on Windows).

martin