Extending `ls` function

Question

Normally on Windows, I alias ls to

alias ls="ls -hNFCs --color=auto -I NTUSER.DAT\* -I ntuser.dat\*"

This removes the NTUSER.DAT files from my view when I ls my home directory along with setting some reasonable defaults.

However, doing the same with fish, I noticed my .dircolors are not being read. It is because ls.fish loads up .dircolors but when I override it with the alias it loses that capability.

So my question is, how do I extend the default ls.fish just to add my extra parameters?

The closest thing I can do is copy the ls.fish file and modify the relevant portion

  function ls --description "List contents of directory" -V opt
            isatty stdout
            and set -a opt -F
            and set -a opt -hNFCs -I NTUSER.DAT\* -I ntuser.dat\*
            command ls $opt $argv
        end

Answer 1

Just copying the function is indeed the thing to do. funced ls can help with this.

Adding a way to extend functions is much too easy to break - where do you allow extensions, how do you ensure arbitrary extensions don't break when you make a change,...

So just copying is nice and simple, especially for a function that's unlikely to be called anywhere else like ls (because you don't want to parse ls' output)