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

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