RAA - optiflag/0.3

Project Full Name: Optiflag Command Line Parser Library
Submitted Description: Optiflag is yet-another library for handling command-line options in an arbitrary Ruby program. It can be used as a replacement for any of the following libraries:
*cmdparser
*getopt-declare
*optparse
*getopt
*getoplong
*CommandLine::OptionParse

Optiflag has three design goals:
1) Ease of use
2) Ease of use
3) Ease of use

Optiflag is modeled after the declarative programming model of Rake, and as such could be considered a mini-language of its own.

Optiflag features:
* declarative required,optional flags
* change arity of flags (default is 1)
* force argument order
* validate flag values (by set or by regular expression)
* auto-generated help and error messages
* short and long-form switches
* ability to change symbol switch (e.g. '' for MSDOS switches)
* character flags (e.g. 'tar -xvf' == 'tar -x -v -f')
* declarative usage and help flags

If Optiflag is doing what it should, the user (a programmer) should feel that she/he is not coding, but specifying.