https://bugs.kde.org/show_bug.cgi?id=455919

--- Comment #7 from Deif Lou <gin...@gmail.com> ---
Created attachment 150161
  --> https://bugs.kde.org/attachment.cgi?id=150161&action=edit
include surrounding regions example

In this image, the second and third figures are filled using the "select
regions surrounded by specific color" with black as surrounding color, the
second one with the option "include surrounding regions" off and the third with
it on. It can be seen that the "include surrounding regions" just treats the
chosen surrounding color as part what should be selected. In the second figure
only the regions that are entirely surrounded by the chosen surrounding color
and that do not touch the enclosing contour are selected. In the third figure,
both the regions that are entirely surrounded by the chosen surrounding color
and the regions with the surrounding color are selected, as long as those don't
touch the enclosing contour. So in the ellipse at the right and the one at the
center-bottom, some black blobs are selected since the surrounding color is
considered part of what should be selected, and they do not touch the 
enclosing contour. A similar effect can be achieved using the "select all
regions" mode (figure 4). Not exactly the same, but this is a made up example.
I think that in practice very few people would want to fill like it is shown in
figure 3.

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