Rebel - a command line REPL UI

The REPL is the environment in which all Clojure code runs, whether that be during development, testing and production systems.

rebel is a REPL UI that provides auto-completion, function call syntax help, themes and key binding styles to enhance the development experience. Clojure tools also include a REPL with a minimal interface by default.

Install rebel readline

practicalli/clojure-deps-edn GitHub repository contains an alias for rebel readline. Fork and clone this repository to ~/.clojure to include the rebel alias and many other useful aliases.

If using your own ~/.clojure/deps.edn configuration, add an alias called :repl/rebel

:rebel {:extra-deps {com.bhauman/rebel-readline {:mvn/version "0.1.4"}}
        :main-opts  ["-m" "rebel-readline.main"]}

Running the rebel REPL

Start a Clojure REPL with Rebel Readline

clojure -M:repl/rebel

A REPL prompt displays and will evaluate code entered.

Evaluate Clojure code by typing at the => user prompt pressing Return, the results of evaluating the code are printed on the next line.

:repl/quit as the prompt will end the REPL session and all changes not saved to a file will be lost.

The following sections use the REPL to help you discover some common Clojure functions and syntax.