@davidrevoy In this example, it seems to fill outside the shape and connects to the wrong line (not even the closest line?). Looks like making manual gap-closing marks using the fill colour might still be the fastest method, except where the lineart is more gap than line :'D
Do you think this is something that will be improved for release, or is this a limitation of the algorithm?
@eishiya True, that's just me who put a too high Close Gap distance in pixels in this demo So it spreads a bit on the other side until it finds a 15px gap.
I was probably a bit too excited to make a perfect example.
Check the example at the end of https://krita-artists.org/t/close-gap-in-fill-tool/32043, the video of SchrodingerCat for maybe another view on the results with a thin grayscale line-art.