Add already checked out repo to git as submodule, automatically extract the remote URL from the repo on your local filesystem

add-existing-submodule.fish

#!/usr/bin/env fish
# based on https://stackoverflow.com/a/52127956/1412255
# tbh git should do better. It can record the particular commit and default remote
# instead of displaying "you accidentally added a git repo, did you mean to add a submodule?"

pushd $argv[1]
set url (git remote get-url (git remote))
popd
git submodule add $url $argv[1]