old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import re
  
  from jinja2 import evalcontextfilter, Markup, escape
  
  RE_NL2BR = re.compile(r'(\\r)?\\n', re.UNICODE | re.MULTILINE)
  
  @evalcontextfilter
  def jinja2_filter_nl2br(eval_ctx, value):
      res = RE_NL2BR.sub('<br>\n', unicode(escape(value)))
      if eval_ctx.autoescape:
          res = Markup(res)
      return res
  
  def jinja2_filter_dt(value, format='%Y-%m-%d %H:%M:%S'):
      return value.strftime(format)
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import re
  
  from jinja2 import evalcontextfilter, Markup, escape
  
  RE_NL2BR = re.compile(r'(\r)?\n', re.UNICODE | re.MULTILINE)
  
  @evalcontextfilter
  def jinja2_filter_nl2br(eval_ctx, value):
      res = RE_NL2BR.sub('<br>\n', unicode(escape(value)))
      if eval_ctx.autoescape:
          res = Markup(res)
      return res
  
  def jinja2_filter_dt(value, format='%Y-%m-%d %H:%M:%S'):
      return value.strftime(format)
  
subject: Fix newline not processed problem