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Kingpin is a fluent-style, type-safe command-line parser. It supports flags, nested commands, and positional arguments. Second to parsing, providing the user with useful help is probably the most important thing a command-line parser does. Kingpin tries to provide detailed contextual help if --help is encountered at any point in the command line (excluding after --). Flags can be specified at any point after their definition, not just immediately after their associated command. Kingpin can be used for simple flag+arg applications. Kingpin supports reading arguments from a file.
Features
- Help output that isn't as ugly as sin
- Fully customisable help, via Go templates
- Parsed, type-safe flags
- Parsed, type-safe positional arguments
- Support for required flags and required positional arguments
- Callbacks per command, flag and argument
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