cdd-fish.sh

#
# for fish shell:
# .. put it into ~/.config/fish/config.fish
# .. tested with fish 3.7.1
#
# cd's into a directory and creates it if it doesn't
# exist yet
#
# USAGE: cdd DIR
#
function cdd

    # check that DIR was supplied
    if test $(count $argv) = 0
        echo "no argument for cdd command" >&2
        echo "USAGE: cdd DIR" >&2
        return 1
    end

    # check that only one argument was supplied
    if test $(count $argv) -gt 1
        echo "too many arguments for cdd command" >&2
        echo "USAGE: cdd DIR" >&2
        return 2
    end


    # check if DIR exists, if not, create it
    if test ! -e $argv[1]
        mkdir -p -- $argv[1]

    # DIR exists, check if its a directory
    else
        if test ! -d $argv[1]
            echo "$argv[1] exists and is not a directory" >&2
            return 3
        end
    end

    # DIR directory should exist by now
    if test ! -d $argv[1]
        echo "Could not create $argv[1]" >&2
        return 4
    end

    cd -- $argv[1]
end