Extending a native terminal command with the Fish shell

Published on 2024-09-07 • Modified on 2024-09-07

This snippet shows how to extend a native terminal command with the Fish shell. This snippet is extracted from the official documentation and adds behaviour to the mkdir command to jump into the new directory after its successful creation. The trick is to use command with the native one to avoid an infinite loop.

function mkdir -d "Create a directory and set CWD"
    command mkdir $argv
    if test $status = 0
        switch $argv[(count $argv)]
            case '-*'
            case '*'
                cd $argv[(count $argv)]
                return
        end
    end
end

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