std::regex_constants::match_flag_type(3)

NAME
std::regex_constants::match_flag_type - std::regex_constants::match_flag_type

Synopsis
   Defined in header <regex>
   typedef /*unspecified*/ match_flag_type; (since C++11)
   constexpr match_flag_type match_default = {};
   constexpr match_flag_type match_not_bol = /*unspecified*/;
   constexpr match_flag_type match_not_eol = /*unspecified*/;
   constexpr match_flag_type match_not_bow = /*unspecified*/;
   constexpr match_flag_type match_not_eow = /*unspecified*/;
   constexpr match_flag_type match_any = /*unspecified*/; (since C++11)
   constexpr match_flag_type match_not_null = /*unspecified*/; (until C++17)
   constexpr match_flag_type match_continuous = /*unspecified*/;
   constexpr match_flag_type match_prev_avail = /*unspecified*/;
   constexpr match_flag_type format_default = {};
   constexpr match_flag_type format_sed = /*unspecified*/;
   constexpr match_flag_type format_no_copy = /*unspecified*/;
   constexpr match_flag_type format_first_only = /*unspecified*/;
   inline constexpr match_flag_type match_default = {};
   inline constexpr match_flag_type match_not_bol = /*unspecified*/;
   inline constexpr match_flag_type match_not_eol = /*unspecified*/;
   inline constexpr match_flag_type match_not_bow = /*unspecified*/;
   inline constexpr match_flag_type match_not_eow = /*unspecified*/;
   inline constexpr match_flag_type match_any = /*unspecified*/;
   inline constexpr match_flag_type match_not_null = /*unspecified*/; (since C++17)
   inline constexpr match_flag_type match_continuous = /*unspecified*/;
   inline constexpr match_flag_type match_prev_avail = /*unspecified*/;
   inline constexpr match_flag_type format_default = {};
   inline constexpr match_flag_type format_sed = /*unspecified*/;
   inline constexpr match_flag_type format_no_copy = /*unspecified*/;
   inline constexpr match_flag_type format_first_only = /*unspecified*/;
   match_flag_type is a BitmaskType that specifies additional regular expression
   matching options.

Constants
   Note: [first, last) refers to the character sequence being matched.
   Constant Explanation
                     The first character in [first,last) will be treated as if it is
   match_not_bol not at the beginning of a line (i.e. ^ will not match
                     [first,first)
   match_not_eol The last character in [first,last) will be treated as if it is not
                     at the end of a line (i.e. $ will not match [last,last)
   match_not_bow "\b" will not match [first,first)
   match_not_eow "\b" will not match [last,last)
   match_any If more than one match is possible, then any match is an
                     acceptable result
   match_not_null Do not match empty sequences
   match_continuous Only match a sub-sequence that begins at first
   match_prev_avail --first is a valid iterator position. When set, causes
                     match_not_bol and match_not_bow to be ignored
   format_default Use ECMAScript rules to construct strings in std::regex_replace
                     (syntax documentation)
   format_sed Use POSIX sed utility rules in std::regex_replace. (syntax
                     documentation)
   format_no_copy Do not copy un-matched strings to the output in std::regex_replace
   format_first_only Only replace the first match in std::regex_replace
   All constants, except for match_default and format_default, are bitmask elements.
   The match_default and format_default constants are empty bitmasks.
  Defect reports
   The following behavior-changing defect reports were applied retroactively to
   previously published C++ standards.
      DR Applied to Behavior as published Correct behavior
                       match_flag_type could not be a scoped
   LWG 2053 C++11 enumeration because made initialized from
                       match_default and format_default was empty braces
                       required to be initialized from 0

See also
   regex_match attempts to match a regular expression to an entire character
   (C++11) sequence
                      (function template)
   syntax_option_type general options controlling regex behavior
   (C++11) (typedef)
   error_type describes different types of matching errors
   (C++11) (typedef)