Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
lex::lexertl::generate_static_dfa compiler errors
if lexer has wchar_t as underlying stream type.
qi::token(min, max),
or qi::tokenid(min, max).
Both parsers match any token with a token id in the range [min, max].
center(num)[a]
and center(num, g)[a]
if used inside a compound generator (such as sequences, Kleene, list,
or plus.
karma::subrule from the repository
(thanks to Lee Clagett for submitting a patch).