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A zero-dependency Ruby CLI boilerplate class (with boilerplate tests)

by Postmodern —

Have you ever wanted to add a simple CLI to one of your small Ruby libraries, but did not want to add the dependency for thor or some other CLI library/framework? Well now you can copy this boilerplate code for a zero-dependency Ruby CLI class! Features include:

  • Zero-dependencies, making it ideal for adding a CLI to small libraries.
  • Correctly handles Ctrl^C and broken pipe exceptions (aka $ your-cli | head).
  • Catches any other exceptions and prints a bug report.
  • Defines the CLI as a class, making it easy to test.
  • Comes with boilerplate RSpec tests.

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