GNU bug report logs - #12012
feature request: scrollbar in fringe

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From: Toon Claes <toon@HIDDEN>
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Subject: feature request: scrollbar in fringe
Date: Sat, 21 Jul 2012 20:52:21 +0200
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Hello all,

yascroll.el ( https://github.com/m2ym/yascroll-el ) is an awesome emacs =
package that makes use of the right fringe to draw a scrollbar.

This works great, with just one issue. It is not possible to draw below =
the end of the buffer. So when the buffer ends in the middle of the =
screen, it is not possible to draw the scrollbar at the bottom of the =
window.

Now we have noticed, 'indicate-empty-lines is able to draw empty line =
markers below the end of the buffer. So I've asked the development =
mailing list if it is possible to do this from elisp:
http://lists.gnu.org/archive/html/emacs-devel/2012-07/msg00148.html

So that's why I am issuing a feature request. There are 2 possible ways =
to fix this:
- implement a scrollbar in the fringe completely in c code
- allow elisp to draw beyond the limits of a buffer

I did have a quick look at the c code used to indicate-empty-lines, but =
it didn't make a lot sense to me.
Maybe somebody is willing to implement the fringe scrollbar, or able to =
point me out how to accomplish this in c code?

Regards,
Toon=