old_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  #
  
  import os
  
  extensions = ['sphinx.ext.imgmath', 'sphinx.ext.viewcode', 'sphinx_rtd_theme']
  templates_path = ['_templates']
  source_suffix = '.rst'
  master_doc = 'index'
  project = 'Mailu'
  copyright = '2018, Mailu authors'
  author = 'Mailu authors'
  version = release = os.environ.get('VERSION', 'master')
  language = None
  exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', 'Dockerfile', 'docker-compose.yml']
  pygments_style = 'sphinx'
  todo_include_todos = False
  html_theme = 'sphinx_rtd_theme'
  html_title = 'Mailu, Docker based mail server'
  html_static_path = []
  htmlhelp_basename = 'Mailudoc'
  
  # Custom sidebar templates, must be a dictionary that maps document names
  # to template names.
  html_sidebars = {
      '**': [
          'relations.html', 
          'searchbox.html',
      ]
  }
  
  # Theme options
  html_context = {
      'display_github': True,
      'github_user': 'mailu',
      'github_repo': 'mailu',
      'github_version': version,
      'stable_version': '1.9',
      'versions': [
          ('1.8', '/1.8/'),
          ('1.9', '/1.9/'),
          ('master', '/master/')
      ],
      'conf_py_path': '/docs/'
  }
  
new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  #
  
  import os
  
  extensions = ['sphinx.ext.imgmath', 'sphinx.ext.viewcode', 'sphinx_rtd_theme']
  templates_path = ['_templates']
  source_suffix = '.rst'
  master_doc = 'index'
  project = 'Mailu'
  copyright = '2018, Mailu authors'
  author = 'Mailu authors'
  version = release = os.environ.get('VERSION', 'master')
  language = 'en'
  exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', 'Dockerfile', 'docker-compose.yml']
  pygments_style = 'sphinx'
  todo_include_todos = False
  html_theme = 'sphinx_rtd_theme'
  html_title = 'Mailu, Docker based mail server'
  html_static_path = []
  htmlhelp_basename = 'Mailudoc'
  
  # Custom sidebar templates, must be a dictionary that maps document names
  # to template names.
  html_sidebars = {
      '**': [
          'relations.html', 
          'searchbox.html',
      ]
  }
  
  # Theme options
  html_context = {
      'display_github': True,
      'github_user': 'mailu',
      'github_repo': 'mailu',
      'github_version': version,
      'stable_version': '1.9',
      'versions': [
          ('1.8', '/1.8/'),
          ('1.9', '/1.9/'),
          ('master', '/master/')
      ],
      'conf_py_path': '/docs/'
  }
  
subject: Set language to English for sphinx in conf.py.