On 27 October 2016 at 13:51, Alain Schneble <a.s@realize.ch> wrote:
> Alain Schneble <a.s@realize.ch> writes:
>
>> Below you will find a patch to extend show-paren-mode with a new
>> `prelude' style.  It's an extension of `parenthesis' style.  If the
>> matching opening paren is not visible, it will show the line of text
>> containing it as an overlay on the window's start line.  I think it's
>> pretty useful, as it helps in keeping context when working e.g. in
>> defuns with many lines of code -- all without having to scroll up and
>> down.
>
> It just came to my mind that I might better had introduced a new
> separate customizable option to enable or disable prelude instead of
> mixing it with the already existing style.  After all, it could be
> useful in *addition* to the existing ones.  What do you think?

Alain,
I agree, it seems to be orthogonal to show-paren mode. It sounds
more like a good old-fashioned minor-mode than a custom option.

Did you rule out using header-line-format? My feeling is that
as a user I want to see the line at window-start and I'd prefer
it not to be obscured by an overlay.