Re: [Gimp-developer] Bug report in Levels control

[Carol Spears <carol spears gmail com>]

On Thu, Aug 31, 2017 at 10:44 PM, Ben Hutchinson <benhut1 gmail com> wrote:

> The Levels control (the dialog box you get with Ctrl+L) has a bug. When you
> select Value for the channel, it is supposed to have a histogram which is
> based on all of the color channels combined. However, this bug causes the
> Value channel for the histogram to only consider the green channel. The
> result is that when you select either Value or Green for the color channel,
> you get identical histograms. The levels sliders themselves work correctly.
> It's just the histogram that has the problem.
>
> This bug is present in the latest beta/development version (at the time I
> wrote this email) of Gimp.
> That is version 2.9.4 commit 5afea2f
> Note that I'm using the Windows version of Gimp, not the Linux version (not
> sure if there are any differences between these 2 in functionality).

First, make sure you can reproduce it (ie, here it is the red channel, and
I never noticed that).

Second: https://bugzilla.gnome.org/enter_bug.cgi?product=GIMP
Perhaps attach a screenshot or not.  If you can figure out how to fix it,
patches for stuff like this are usually well received.

Also, this is kind of funny to me.  I wonder how far back this oddity goes.

carol