Note that Rails 4 already has better error pages, though there’s no embedded REPL.
Thats true but its still not as useful as this error page.
Right! Not saying it’s not a good gem, just mentioning it’s one of the new things.
Heh. And here I am, converting an app to rails 3. The future never stops.
Seems useful for quick edits or for stuff you forget to add to a project.