Jazz Hands

Spending hours in the rails console? Spruce it up and show off those hard-working hands!

jazz_hands is an opinionated set of console-related gems and a bit of glue:

Pry for a powerful shell alternative to IRB.
Awesome Print for stylish pretty print.
Hirb for tabular collection output.
Pry Rails for additional commands (show-routes, show-models, show-middleware) in the Rails console.
Pry Doc to browse Ruby source, including C, directly from the console.
Pry Git to teach the console about git. Diffs, blames, and commits on methods and classes, not just files.
Pry Remote to connect remotely to a Pry console.
Pry Debugger to turn the console into a simple debugger.
Pry Stack Explorer to navigate the call stack and frames.
Coolline and Coderay for syntax highlighting as you type. Optional. MRI 1.9.3/2.0.0 only

Usage

Ruby 1.9.2+, Rails 3 or 4 only. Add to your project Gemfile:

group :development, :test do
  gem 'jazz_hands'
end

That's it. Run rails console as usual.

Hirb isn't enabled by default. To use, run Hirb.enable in the console.

Ruby compiled against a proper readline library, ideally GNU readline, is recommended. Alternatively, gem install rb-readline for an acceptible backup. Using ruby compiled against a libedit wrapper (primarily OS X) will work but is not recommended.

Options

Change the following options by creating an initializer in your Rails project Example config/initializers/jazz_hands.rb:

if defined?(JazzHands)
  JazzHands.colored_prompt = false
  JazzHands.enable_syntax_highlighting_as_you_type!
end

`colored_prompt`

Color the console prompt? Defaults to true when the current ruby is compiled against GNU readline or rb-readline, which don't have issues counting characters in colored prompts. false for libedit.

Note: Pry.color = false trumps this setting and disables all console coloring.

`prompt_separator`

Separator string between the application name and line input. Defaults to » for GNU readline or libedit. Defaults to > for rb-readline which fails on mixed encodings.

Syntax highlighting

Syntax highlighting as you type via Coolline and Coderay is disabled by default due to slightly buggy behavior. To enable, add JazzHands.enable_syntax_highlighting_as_you_type! to the initializer. Only works with MRI 1.9.3 or 2.0.0.

Contributing

Patches and bug reports are welcome. Just send a pull request or file an issue. Project changelog.

dji-dev/jazz_hands