lisp-gflags
https://github.com/brown/lisp-gflags

Lisp GFlags is a Common Lisp implementation of gflags, Google's command line flag parsing library. The library implements functionality similar to that of Google's C++ and Python gflags libraries, which live here:

http://code.google.com/p/google-gflags/ http://code.google.com/p/python-gflags/

The code allows you to define command line flags using the DEFINE-FLAG macro. For instance, the following form defines a boolean flag called *DEBUG-FLAG* that is set based on the presence of "--debug" in the application's command line.

(define-flag *debug-flag* :default-value nil :selector \"debug\" :type boolean :help \"Turn on debugging mode?\" :documentation \"Is debugging mode turned on?\")

If the command line contains "--debug" or "--debug=true", then *DEBUG-FLAG* is set to T. Otherwise, it defaults to NIL.

The function PARSE-COMMAND-LINE is used to parse the command line.

The file flag.test contains more examples.


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