GNU Guile 2.1.1 发布，主要更新如下： ** 速度 The biggest change in Guile 2.2 is a complete rewrite of its virtual machine and compiler internals. The result is faster startup time, better memory usage, and faster execution of user code. See the "Performance improvements" section below for more details. ** 更好的线程安全 This new release series takes the ABI-break opportunity to fix some interfaces that were difficult to use correctly from multiple threads. Notably, weak hash tables are now transparently thread-safe. Ports are also thread-safe; see "New interfaces" below for details on the changes to the C interface. ** Better space-safety It used to be the case that, when calling a Scheme procedure, the procedure and arguments were always preserved against garbage collection. This is no longer the case; Guile is free to collect the procedure and arguments if they become unreachable, or to re-use their slots for other local variables. Guile still offers good-quality backtraces by determining the procedure being called from the instruction pointer instead of from the value in slot 0 of an application frame, and by using a live variable map that allows the debugger to know which locals are live at all points in a frame. 更多内容请看：发行说明 下载地址： http://alpha.gnu.org/gnu/guile/guile-2.1.1.tar.gz (7.4MB) http://alpha.gnu.org/gnu/guile/guile-2.1.1.tar.xz (4.6MB) GNU Guile 2.1.1 发布，Scheme 实现下载地址
