Here are completion files for bash, zsh and fish for the use of dotdrop through the bash script dotdrop.sh or through the Python script dotdrop (PyPI, snap, setup.py, etc.).

bash and zsh scripts are generated using infi.docopt_completion.

bash

Source the file

if using dotdrop.sh: dotdrop.sh-completion.bash
If using dotdrop: dotdrop-completion.bash

zsh

Copy the file to a path within ${fpath}

If using dotdrop.sh: _dotdrop.sh-completion.zsh
If using dotdrop: _dotdrop-completion.zsh

fish

Install for your user:

mkdir -p ~/.config/fish/completions
cp dotdrop.fish ~/.config/fish/completions/

Install system-wide:

cp dotdrop.fish /usr/share/fish/completions/