capture_groups
Capture groups setting.
constexpr bool is_dotall(regex_flags const f)
Returns true if the given flags contain DOTALL.
constexpr bool is_multiline(regex_flags const f)
Returns true if the given flags contain MULTILINE.
constexpr bool is_ascii(regex_flags const f)
Returns true if the given flags contain ASCII.
@ EXTRACT
Capture groups processed normally for extract.
@ NON_CAPTURE
Convert all capture groups to non-capture groups.
@ DOTALL
the '.' matching includes new-line characters
@ ASCII
use only ASCII when matching built-in character classes
@ MULTILINE
the '^' and '$' honor new-line characters