The maintainer of X11Libre, Enrico Weigelt, is an anti-vaxer who already got scolded by Torvalds for writing bullshit on the kernel mailing list

Oh, so it’s him. Dude got absolutely lucky Linus is on mild mode nowadays. On his prime the scold would’ve been of such epic proportions all the viruses he could have on his body would’ve leave him out of pure cringe.

No, because we’re telling to use : as a separator with the -F flag

Not sure if I’m understanding, but can’t you just pipe the whole thing to awk and capture the first field? Like

echo "/dev/loop0: [2081]:64 (/a/path/to/afile.dat)" | awk -F: '{print $1}'

Which would print

/dev/loop0

I’d suppose if you ask this on KDE Reddit someone with enough time could make something like this with Kvantvm, though the difficult parts would be (1) the web browser theme, and specially (2) the icon theme - I have never ever seen an icon theme like that for Linux