code: static boolean isEscaped(final String characters, final int position) {
  		int p = position;
  		int nbBackslash = 0;
  		while (p > 0 && characters.charAt(--p) == '\\') {
  			nbBackslash++;
  		}
  		return (nbBackslash % 2 == 1);
  	}
docs: Indicates if the character at the given position is escaped or not.
  
  @param characters
  the characters to consider
  @param position
  the position
  @return <code>true</code> if escaped