set -l commands all set config diff build install postinst clean
complete -c kern -f

complete -c kern -n "not __fish_seen_subcommand_from $commands" -a all -d "Run the suite of commands in order"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a set -d "Select the given kernel"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a config -d "Configure the kernel using the given template"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a diff -d "Display differences between kernel configurations"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a build -d "Build the selected kernel"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a install -d "Install the selected kernel"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a postinst -d "Run post-installation jobs"
complete -c kern -n "not __fish_seen_subcommand_from $commands" -a clean -d "Remove obsolete kernels"

complete -c kern -n "__fish_seen_subcommand_from set" -a "(eselect --brief kernel list)"
complete -c kern -n "__fish_seen_subcommand_from config" -a "(string match -v base (path filter -f /etc/kernfrag/templates/* | path basename))"
complete -c kern -n "__fish_seen_subcommand_from diff" -F