Arcueid is a C interpreter for Paul Graham's Arc dialect of Lisp. It is intended to be compatible with the Arc 3.1 release, with a simple interface to C, and is easily usable as an embedded interpreter or an extension language.
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This release provides some 32-bit compatibility fixes (although 32-bit support is still somewhat broken), other minor bugfixes, and support for Arc's atstrings. News.arc is now correctly rendered.