On Wed, Sep 22 2010, Lars Magne Ingebrigtsen wrote:

> Hooks are generally for user-enabled stuff.  Even the highlight thing
> really shouldn't be in that hook.

I agree. But it was not empty! This is why I did add it here. :-)

OTOH I can look to empty the hook by default.

> And it looks like an expensive function.  It starts with:
>
>   (save-excursion
>     (let* ((end (line-end-position))
>            ;; now find out where the line starts and leave point there.
>            (beg (line-beginning-position)))
>       (save-restriction
>         (narrow-to-region beg end)
>         (goto-char beg)
>         (let ((mystart (text-property-any beg end 'gnus-group-icon t)))
>
> And this is run once per line, whether you have %E to or not, isn't it?

Sure, it is. But I will say early optimization is bad. I don't think is
is slowing things down. C'mon! ;-)

But, what I would prefer to do, is to build the %E value with the image
directly, and then use that propertized string to replace %E in the
spec. This would avoid scanning group lines…

What do you think?

PS: You know, I'm new, and I don't think like I'm authorized to move
that old code all around, so I'm doing things little by little for now.
;-)

-- 
Julien Danjou
// ᐰ <julien@danjou.info>   http://julien.danjou.info