Ruby

Files: .rb
Formats as: RuboCop
Lints: Every rule that reads its code
In ur.toml: [format.ruby]

Formatted

cart.rb, as written

# What a cart costs.
def subtotal(items)
    items.sum { |item| item.price*item.quantity }
end
def label(item) = item.name+" x"+item.quantity.to_s

ur format --style rubocop cart.rb

# What a cart costs.
def subtotal(items)
  items.sum { |item| item.price * item.quantity }
end

def label(item) = item.name + " x" + item.quantity.to_s

Try it in the playground →

Versions

Ur reads Ruby as the profiles below name it. Name the versions a project targets in target; without it, Ur reads ruby-4.0.

Profile	Dialect
`ruby-3.3`	CRuby
`ruby-3.4`	CRuby
`ruby-4.0`	CRuby