conda tab complete

conda_tab_complete

# command: source
# Allow autocomplete for conda environments

_complete_source_activate_conda(){
      if [ ${COMP_WORDS[COMP_CWORD-1]} != "activate" ]
      then
          return 0
      fi
      local cur=${COMP_WORDS[COMP_CWORD]}
      # ls $(path when conda root || path when conda environment activated)
      COMPREPLY=($(ls $(type -p activate | grep -oP '^.*/envs' || echo $(type -p activate | xargs dirname)/../envs) | xargs -I dirs bash -c "compgen -W dirs $cur"))
      return 0
}

complete -F _complete_source_activate_conda source