unison-completions.sh

all_commands=(
  run
  run.file
  run.pipe
  transcript
  version
  help
  -codebase
  transcript.fork
)

commands_accepting_dir=(
  -codebase
)

commands_accepting_file=(
  -save-codebase
  transcript.fork
  run.file
)

transcript_only=(
  -save-codebase
)

_unison_complete() {
  local cur_word prev_word
  cur_word="${COMP_WORDS[COMP_CWORD]}"
  prev_word="${COMP_WORDS[COMP_CWORD-1]}"

  if [[ ${prev_word} == "unison" ]]; then
    COMPREPLY=($(compgen -W "$(echo ${all_commands[@]})" -- ${cur_word}))
  elif [[ ${prev_word} == "transcript" ]]; then
    COMPREPLY=($(compgen -W "$(echo ${transcript_only[@]})" -f -d -- ${cur_word}))
  elif [[ "${commands_accepting_dir[@]}" =~ "${prev_word}" ]]; then
    COMPREPLY=($(compgen -d -- ${cur_word}))
  elif [[ "${commands_accepting_file[@]}" =~ "${prev_word}" ]]; then
    COMPREPLY=($(compgen -f -- ${cur_word}))
  fi

  return 0
}

complete -o filenames -o nospace -o bashdefault -F _unison_complete unison