text: #!/usr/bin/env python
  from __future__ import unicode_literals
  
  import os
  from os.path import dirname as dirn
  import sys
  
  sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
  import picta_dl
  
  BASH_COMPLETION_FILE = "picta-dl.bash-completion"
  BASH_COMPLETION_TEMPLATE = "devscripts/bash-completion.in"
  
  
  def build_completion(opt_parser):
      opts_flag = []
      for group in opt_parser.option_groups:
          for option in group.option_list:
              # for every long flag
              opts_flag.append(option.get_opt_string())
      with open(BASH_COMPLETION_TEMPLATE) as f:
          template = f.read()
      with open(BASH_COMPLETION_FILE, "w") as f:
          # just using the special char
          filled_template = template.replace("{{flags}}", " ".join(opts_flag))
          f.write(filled_template)
  
  
  parser = picta_dl.parseOpts()[0]
  build_completion(parser)
  