1. Introduction

1

The quarrel package provides a strict, opinionated command-line argument parser intended for producing consistent command-line applications.

Strongly-typed access to command-line arguments, for program correctness.
Simple and regular command-line parsing for easily understood command-line interfaces.
Automatic generation of "help" and "version" commands for command-line interfaces.
Detailed, structured, and localized user-facing error messages for clear explanations as to how to use the command-line interfaces correctly.
A small, easily auditable codebase with no use of reflection or annotations.
An extensive automated test suite with high coverage.
Supplies a restricted form of @ syntax, for storing command-line arguments in files.
Fully documented, with usage tutorial.
OSGi-ready
JPMS-ready
ISC license.