Rib - A lightweight and extensible irb replacement

Lightweight

Thin and fast

	rib	irb	pry
Lines of code	1500	4500	9000
Launch time (ms)	404.4	404.6	624.4
Data on 2018-05-22

Easily extensible

Use built-in plugins or write your own

Here's a small list of some special built-in plugins:

Multiline history
Bottom up backtrace
In-place editing
Auto-indention
Output pagination

Less complex

Therefore less likely to have bugs

Utilize Ruby's parser directly instead of a separate parser like irb, therefore less likely to behave differently. For example, evaluating {if: 42} in irb was once broken ^(issue)

gem install rib

Usage

Start the shell by:

rib Pure ruby console
rib rails Rails console

rib rack Rack console
rib auto for auto detecting application

Asciicast

Try rib all to enable almost all built-in plugins for above example.

rib -h

Usage: rib [ruby OPTIONS] [rib OPTIONS] [rib COMMANDS]
ruby options:
  -e, --eval LINE        Evaluate a LINE of code
  -d, --debug            Set debugging flags (set $DEBUG to true)
  -w, --warn             Turn warnings on (set $-w and $VERBOSE to true)
  -I, --include PATH     Specify $LOAD_PATH (may be used more than once)
  -r, --require LIBRARY  Require the library, before executing your script
rib options:
  -c, --config FILE      Load config from FILE
  -p, --prefix PATH      Prefix to locate the app. Default to .
  -n, --no-config        Suppress loading any config
  -h, --help             Print this message
  -v, --version          Print the version
rib commands:
  all                    Load all recommended plugins
  auto                   Run as Rails or Rack console (auto-detect)
  min                    Run the minimum essence
  rack                   Run as Rack console
  rails                  Run as Rails console

🍖Rib A lightweight and extensible irb replacement