Scold for using Git Checkout

scold_git_checkout.bash

# Paste this snippet into your .bashrc to help you learn `git switch`.
#
# Turn on the extdebug mode so that our `scold_git_checkout` can prevent
# us from running git-checkout by exiting 1; forcing us to re-learn our
# muscle memory.
# If we *really* need to use git checkout for something, we can do that
# by using the full path to the git executable e.g.:
#     /usr/bin/git checkout # isn't caught by our scolding
shopt -s extdebug

scold_git_checkout() {
        if [ "$1" != "git" ]; then
                return 0
        fi
        if [ "$2" != "checkout" ]; then
                return 0
        fi
        cat >&2 <<EOF
////// DON'T use git checkout! //////
The 'git checkout' command of git has been replaced with two other
commands: 'git switch' and 'git restore'. You used:
        $@
EOF
        if [ "$3" == "-b" ]; then
                PASTESAFE="$(printf "%q " "${@:4}")"
                cat >&2 <<EOF
You should use the following:

        git switch -c $PASTESAFE

EOF
        elif [ "$3" == "--" ]; then
                PASTESAFE="$(printf "%q " "${@:4}")"
                cat >&2 <<EOF
You should use the following:

        git restore $PASTESAFE

EOF
        else
                PASTESAFE="$(printf "%q " "${@:3}")"
                cat >&2 <<EOF
You can try the following:

        git switch $PASTESAFE

EOF
        fi
        return 1
}
trap 'scold_git_checkout $BASH_COMMAND' DEBUG