Create zsh completion script for Thor subclass.


This creates completion script that completes...

  • Subcommands (includes nested subcommands such as knife solo cook ...)
  • Options for subcommands.


  • Does not support arguments for subcommand, all arguments are completed as file.
  • Does not support arguments for options, all arguments are completed as file.


Add this line to your application's Gemfile:

gem 'thor-zsh_completion'

And then execute:

$ bundle

Or install it yourself as:

$ gem install thor-zsh_completion


To generate completion script:

require "thor"
require "thor/zsh_completion"

class YourCommand < Thor
  # ...

puts, "yourcommand").generate

Or include Thor::ZshCompletion::Command to add subcommand zsh-completion

require "thor"
require "thor/zsh_completion"

class YourCommand < Thor
  include ZshCompletion::Command
  # ...


and execute below.

$ yourcommand zsh-completion [--name=yourcommand] > path/to/fpath/_yourcommand


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to

Testing completion script

source spec/thor/zsh_completion/generator_spec.zsh
generator_spec [TAB]


Bug reports and pull requests are welcome on GitHub at[USERNAME]/thor-zsh_completion. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.


The gem is available as open source under the terms of the MIT License.