old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #
  # PCEF - PySide Code Editing framework
  # Copyright 2013, Colin Duquesnoy <colin.duquesnoy@gmail.com>
  #
  # This software is released under the LGPLv3 license.
  # You should have received a copy of the GNU Lesser General Public License
  # along with this program. If not, see <http://www.gnu.org/licenses/>.
  #
  """An easy to use and easy to customise full featured code editor for PySide
  applications.
  
  This module contains helper functions for the end user.
  """
  import logging
  from version import __version__ as pcef_version
  
  # create logger with 'spam_application'
  module_logger = logging.getLogger(__name__)
  module_logger.setLevel(logging.DEBUG)
  # create file handler which logs even debug messages
  fh = logging.FileHandler('pcef.log')
  fh.setLevel(logging.DEBUG)
  # create console handler with a higher log level
  ch = logging.StreamHandler()
  ch.setLevel(logging.ERROR)
  # create formatter and add it to the handlers
  formatter = logging.Formatter('%(levelname)s <%(name)s>: %(message)s')
  fh.setFormatter(formatter)
  ch.setFormatter(formatter)
  # add the handlers to the logger
  module_logger.addHandler(fh)
  module_logger.info("#" * 80)
  module_logger.info("PCEF v{0}".format(pcef_version))
  module_logger.addHandler(ch)
  
  
  def openFileInEditor(editor, filename, encoding='utf8',
                       replaceTabsBySpaces=True):
      """
      Open a file in an editor
      :param editor: Editor instance where the file content will be displayed
      :param filename: Filename of the file to open
      :param encoding: Encoding to use to load the file
      """
      f = open(filename, 'r')
      content = unicode(f.read().decode(encoding))
      if replaceTabsBySpaces:
          content = content.replace("\t", " " * editor.TAB_SIZE)
      editor.textEdit.setPlainText(content)
      editor.textEdit.filename = filename
      # todo change highlighter lexer here
      editor.ui.textEdit.dirty = False
      module_logger.info("File opened: {0}".format(filename))
  
  
  def saveFileFromEditor(editor, filename, encoding='utf8'):
      """
      Save the editor content to a file
      :param editor: Editor instance
      :param filename: The filename to save
      :param encoding: The save encoding
      """
      content = unicode(editor.textEdit.toPlainText())
      f = open(filename, "w")
      f.write(content.encode(encoding))
      f.close()
      editor.textEdit.dirty = False
      editor.filename = filename
      module_logger.info("File saved: {0}".format(filename))
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  #
  # PCEF - PySide Code Editing framework
  # Copyright 2013, Colin Duquesnoy <colin.duquesnoy@gmail.com>
  #
  # This software is released under the LGPLv3 license.
  # You should have received a copy of the GNU Lesser General Public License
  # along with this program. If not, see <http://www.gnu.org/licenses/>.
  #
  """An easy to use and easy to customise full featured code editor for PySide
  applications.
  
  This module contains helper functions for the end user.
  """
  import logging
  from version import __version__ as pcef_version
  
  # create logger with 'spam_application'
  module_logger = logging.getLogger(__name__)
  module_logger.setLevel(logging.DEBUG)
  # create file handler which logs even debug messages
  fh = logging.FileHandler('pcef.log')
  fh.setLevel(logging.DEBUG)
  # create console handler with a higher log level
  ch = logging.StreamHandler()
  ch.setLevel(logging.ERROR)
  # create formatter and add it to the handlers
  formatter = logging.Formatter('%(levelname)s <%(name)s>: %(message)s')
  fh.setFormatter(formatter)
  ch.setFormatter(formatter)
  # add the handlers to the logger
  module_logger.addHandler(fh)
  module_logger.info("#" * 80)
  module_logger.info("PCEF v{0}".format(pcef_version))
  module_logger.addHandler(ch)
  
  
  def openFileInEditor(editor, filename, encoding='utf8',
                       replaceTabsBySpaces=True):
      """
      Open a file in an editor
      :param editor: Editor instance where the file content will be displayed
      :param filename: Filename of the file to open
      :param encoding: Encoding to use to load the file
      """
      f = open(filename, 'r')
      content = unicode(f.read().decode(encoding))
      if replaceTabsBySpaces:
          content = content.replace("\t", " " * editor.TAB_SIZE)
      editor.textEdit.filename = filename
      editor.syntaxHighlightingMode.setLexerFromFilename(filename)
      editor.textEdit.setPlainText(content)
      editor.ui.textEdit.dirty = False
      module_logger.info("File opened: {0}".format(filename))
  
  
  def saveFileFromEditor(editor, filename, encoding='utf8'):
      """
      Save the editor content to a file
      :param editor: Editor instance
      :param filename: The filename to save
      :param encoding: The save encoding
      """
      content = unicode(editor.textEdit.toPlainText())
      f = open(filename, "w")
      f.write(content.encode(encoding))
      f.close()
      editor.textEdit.dirty = False
      editor.filename = filename
      module_logger.info("File saved: {0}".format(filename))
  
subject: change lexer based on the new filename