Chicken is a Scheme compiler that translates most of R5RS Scheme into relatively portable C. It supports fully general tail-call recursion, first-class continuations, and has a very flexible and efficient interface to C and C++. Chicken implements several extensions to the Scheme language: lightweight threads, pattern matching macros, dynamic loading of compiled code, and various object-oriented paradigms, such as TinyCLOS, Meroon, Prometheus, and others. The library system includes hundreds of convenient modules for practical use. License: BSD License (revised) Changes: The semantics of chicken-setup have been changed to allow sandbox-type installation of libraries. MinGW support has been improved. Unit regex has been updated to use PCRE 7.6. There have been many additions and fixes to the posix unit and to the hashtable functions in the extras unit.

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