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CL-Yacc is a LALR(1) parser generator for Common Lisp, somewhat like Yacc, GNU Bison, Zebu, lalr.cl or lalr.scm. The latest version of CL-Yacc can be found on the CL-Yacc web page . This manual was written by Juliusz Chroboczek . CL-Yacc exports its symbols from the package yacc : (use-package '#:yacc) A parser consumes the output of a lexer, that produces a stream of terminals. CL-Yacc expects the lexer to be a function of no arguments (a thunk ) that returns two values: the next terminal symbol, and the value of the symbol, which will be passed to the action associated with a production. At the end of the input, the lexer should return nil . A very simple lexer that grabs tokens from a list: (defun list-lexer (list) #'(lambda () (let ((value (pop list))) (if (null value) (values nil nil) (let ((terminal ...

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Polipo is a small and fast caching web proxy (a web cache , an HTTP proxy, a proxy server). While Polipo was designed to be used by one person or a small group of people, there is nothing that prevents it from being used by a larger group. Polipo has some features that are, as far as I know, unique among currently available proxies: Polipo will use HTTP/1.1 pipelining if it believes that the remote server supports it, whether the incoming requests are pipelined or come in simultaneously on multiple connections (this is more than the simple usage of persistent connections, which is done by e.g. Squid); Polipo will cache the initial segment of an instance if the download has been interrupted, and, if necessary, complete it later using Range requests; Polipo will upgrade client requests to HTTP/1.1 even if they come in as HTTP/1.0, and up- or downgrade server replies to the client's c...