Going back a bit...

[Boudewijn Rempt]

While browsing for references to ImageMagick on the krita mailing list
(wondering whether ImageMagick was once used for the whole
paint/canvas/render back-end), I came across a fairly recent message where
you (Patrick) says:

....

Not really, I have

1) some colorspace work
2) getting ImageMagick out of Krita proper
3) a filter using GraphicMagick
4) I have some optimizations (premultiplied alpha values among others)

None of which are really tested.

....

I think I would rather like to see that code -- a diff is okay, or if it
compiles, a checkin perhaps.