[zackelan]

I'm a very happy fish user but this is one of my pain points as well. If you want to define a function, the syntax is light-years ahead of bash, including named arguments (and closures!), but it took a fair bit of googling and eyebrow-wrinkling before I could figure out the way just to set a default argument for that function.

What I ended up with was (for a shortcut for generating a password on the command line):

    function pw --argument length
        test -z $length; and set length 16
        python3.6 -c "import secrets; print(secrets.token_urlsafe($length))"
    end