fish-shell/share/functions/__fish_print_commands.fish

function __fish_print_commands --description "Print a list of documented fish commands"
    if test -d $__fish_data_dir/man/man1/
        for file in $__fish_data_dir/man/man1/**.1*
            string replace -r '.*/' '' -- $file |
                string replace -r '.1(.gz)?$' '' |
                string match -rv '^fish-(?:completions|doc|tutorial|faq)$'
        end
    end
end