1[/ 2 / Copyright (c) 2008 Eric Niebler 3 / 4 / Distributed under the Boost Software License, Version 1.0. (See accompanying 5 / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 /] 7 8[section Appendix 2: Not Yet Implemented] 9 10The following features are planned for xpressive 2.X: 11 12* `syntax_option_type::collate` 13* Collation sequences such as [^'''[.a.]'''] 14* Equivalence classes like [^'''[=a=]'''] 15* Control of nested results generation with `syntax_option_type::nosubs`, 16 and a `nosubs()` modifier for static xpressive. 17 18Here are some wish-list features. You or your company should 19consider hiring me to implement them! 20 21* Optimized DFA back-end for simple, fast regexing. 22* Different regex compiler front ends for basic, extended, awk, grep 23 and egrep regex syntax. 24* Fine-grained control over the dynamic regex syntax 25* Optional integration with ICU for full Unicode support. 26* Improved localization support, possibly as a custom facet for `std::locale`. 27 28[endsect] 29