_my-app() { local i cur prev opts cmds COMPREPLY=() cur="${COMP_WORDS[COMP_CWORD]}" prev="${COMP_WORDS[COMP_CWORD-1]}" cmd="" opts="" for i in ${COMP_WORDS[@]} do case "${cmd},${i}" in ",$1") cmd="my__app" ;; *) ;; esac done case "${cmd}" in my__app) opts="-F -f -O -o -h -V --flg --flag --opt --option --help --version [positional]" if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") ) return 0 fi case "${prev}" in --option) COMPREPLY=($(compgen -f "${cur}")) return 0 ;; --opt) COMPREPLY=($(compgen -f "${cur}")) return 0 ;; -o) COMPREPLY=($(compgen -f "${cur}")) return 0 ;; -O) COMPREPLY=($(compgen -f "${cur}")) return 0 ;; *) COMPREPLY=() ;; esac COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") ) return 0 ;; esac } complete -F _my-app -o bashdefault -o default my-app