```bash
#! /bin/bash
# Heavily inspired by https://github.com/urfave/cli

_cli_bash_autocomplete() {
  if [[ "${COMP_WORDS[0]}" != "source" ]]; then
    local cur opts base
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    if [[ "$cur" == "-"* ]]; then
      opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} ${cur} --generate-bash-completion )
    else
      opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} --generate-bash-completion )
    fi
    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
    return 0
  fi
}

if [ -z "$PROG" ] && [ ! "$(command -v gitea &> /dev/null)" ] ; then
  complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete gitea
elif [ -z "$PROG" ]; then
  complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete ./gitea
  complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete "$PWD/gitea"
else
  complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete "$PROG"
  unset PROG
fi```
