#NEWLINE# def _highlight_indentation( self , old_markup , new_markup , is_indent , raw_indent_len , norm_indent_len_diff ) : #NEWLINE# #INDENT# 'Highlights indentation in an HTML-formatted line.\n\n        This will wrap the indentation in <span> tags, and format it in\n        a way that makes it clear how many spaces or tabs were used.\n        ' #NEWLINE# if is_indent : #NEWLINE# #INDENT# new_markup = self . _wrap_indentation_chars ( 'indent' , new_markup , raw_indent_len , norm_indent_len_diff , raw_indent_len . _serialize_indentation ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# old_markup = self . _wrap_indentation_chars ( 'unindent' , old_markup , raw_indent_len , norm_indent_len_diff , self . _serialize_unindentation ) #NEWLINE# #UNINDENT# return ( old_markup , new_markup )