The Boost Regex library provides regular expression support for C++, this library is the ancestor to std::regex and still goes beyond and offers some advantages to, the standard version.
The full documentation is available on boost.org.
Bugs and feature requests can be reported through the Gitub issue tracker (see open issues and closed issues).
You can submit your changes through a pull request.
There is no mailing-list specific to Boost Regex, although you can use the general-purpose Boost mailing-list using the tag [regex].
Clone the whole boost project, which includes the individual Boost projects as submodules (see boost+git doc):
git clone https://github.com/boostorg/boost
cd boost
git submodule update --init
The Boost Regex Library is located in libs/regex/.
First, make sure you are in libs/regex/test.
You can either run all the tests listed in Jamfile.v2 or run a single test:
../../../b2 <- run all tests
../../../b2 regex_regress <- single test