Bash-completion supports pre-defining $BASH_COMPLETION as the path to the main script, so use that if it's defined. Alsö, don't load homebrew's completion if we've successfully loaded one already.
Bash-completion supports pre-defining $BASH_COMPLETION as the path to the main script, so use that if it's defined. Alsö, don't load homebrew's completion if we've successfully loaded one already.