old_contents: ################################################################################
  #
  # Copyright (c) 2016 Patrice Clement
  #
  # This file is part of libzilla
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  #
  ################################################################################
  
  from libzilla.git.toolbox import look_for_bug_numbers
  from libzilla.git.toolbox import trim_spaces
  from libzilla.git.toolbox import run_command
  
  GIT_COMMAND = 'git --no-pager log --pretty --summary --color=never --stat --format=fuller -1 HEAD'
  
  CANDIDATES = (
      r'^.*?Fixes bug (\d+).*?$',
      r'^.*?Fixes security bug (\d+).*?$',
      r'^\s+Gentoo-Bug:(\s+\d+)$',
      r'^\s+Gentoo-Bug:\s?https://bugs.gentoo.org/(\d+)'
  )
  
  """A GitSession represents a `git' command run."""
  
  
  class GitSession:
      def __init__(self):
          self.commit_info = None
          self.begin()
  
      def begin(self):
          last_commit = run_command(GIT_COMMAND)
  
          bugs_to_close = set(
              filter(lambda bug: bug, \
              map(lambda line: look_for_bug_numbers(line, CANDIDATES), last_commit))
          )
  
          self.commit_info = {
              'bugs_to_close': bugs_to_close,
              'content': trim_spaces(last_commit),
              'len_bugs': len(bugs_to_close)
          }
  
new_contents: ################################################################################
  #
  # Copyright (c) 2016 Patrice Clement
  #
  # This file is part of libzilla
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  #
  ################################################################################
  
  from libzilla.git.toolbox import look_for_bug_numbers
  from libzilla.git.toolbox import trim_spaces
  from libzilla.git.toolbox import run_command
  
  GIT_COMMAND = 'git --no-pager log --pretty --summary --color=never --stat --format=fuller -1 HEAD'
  
  CANDIDATES = (
      r'^\s+Bug:\s?https://bugs.gentoo.org/(\d+)'
  )
  
  """A GitSession represents a `git' command run."""
  
  
  class GitSession:
      def __init__(self):
          self.commit_info = None
          self.begin()
  
      def begin(self):
          last_commit = run_command(GIT_COMMAND)
  
          bugs_to_close = set(
              filter(lambda bug: bug, \
              map(lambda line: look_for_bug_numbers(line, CANDIDATES), last_commit))
          )
  
          self.commit_info = {
              'bugs_to_close': bugs_to_close,
              'content': trim_spaces(last_commit),
              'len_bugs': len(bugs_to_close)
          }
  
subject: reduce bug header CANDIDATES down to one