old_contents: # -*- coding: utf-8 -*-
  """MSC110: Currency.
  
  ---
  layout:     post
  error_code: MSC110
  source:     SublimeLinter-annotations
  source_url: http://bit.ly/16Q7H41
  title:      symbols
  date:       2014-06-10 12:31:19
  categories: writing
  ---
  
  Symbols.
  
  """
  from tools import existence_check, memoize
  
  
  @memoize
  def check(text):
      """Check the text."""
      err = "misc.currency"
      msg = u"Incorrent use of symbols in {}."
  
      symbols = [
          "\$[\d]* ?(?:dollars|usd|us dollars)"
      ]
  
      return existence_check(text, symbols, err, msg)
  
new_contents: # -*- coding: utf-8 -*-
  """MSC110: Currency.
  
  ---
  layout:     post
  error_code: MSC110
  source:     SublimeLinter-annotations
  source_url: http://bit.ly/16Q7H41
  title:      symbols
  date:       2014-06-10 12:31:19
  categories: writing
  ---
  
  Symbols.
  
  """
  from tools import existence_check, memoize
  
  
  @memoize
  def check(text):
      """Check the text."""
      err = "misc.currency"
      msg = u"Incorrect use of symbols in {}."
  
      symbols = [
          "\$[\d]* ?(?:dollars|usd|us dollars)"
      ]
  
      return existence_check(text, symbols, err, msg)
  
subject: Fix typo