Here is a list of all documented variables with links to the struct/union documentation for each field:

- u -

• unescaped : pm_match_last_line_node, pm_regular_expression_node, pm_string_node, pm_symbol_node, pm_x_string_node
• unexpected : pm_error_recovery_node
• unicode_property_name : pm_regexp_parser_t
• unicode_property_name_length : pm_regexp_parser_t
• unless_keyword_loc : pm_unless_node
• until_keyword_loc : pm_until_node
• usecnt : RRegexp