
rm -rf /home/user/ when it should have evaluated to rm -rf /home/user/path/to/app/fileintendedtoberemoved, but an untested combination of options led it to be that way.
$HOME/.local/share/fontsrm -rf /home/user/rm -rf /home/user/path/to/app/fileintendedtoberemoved$HOME/.local/share/fonts