Parsing a command line

You would think this would be easy to find. I've got a string - perhaps taken from a file - that represents a command. I want to parse it into an ARGV-like structure, with proper string quoting and that kind of thing.

• Here's a way to do it in C#: CommandLineParser.
• Or you can get Windows to do it for you, from Perl.
• Oh, right. Text::ParseWords. I knew I already knew the answer to this.

That said, I should probably roll my own based on the same parsing tools in Decl::Syntax.