class RuboCop::Cop::Layout::MultilineBlockLayout

Checks whether the multiline do end blocks have a newline after the start of the block. Additionally, it checks whether the block arguments, if any, are on the same line as the start of the block. Putting block arguments on separate lines, because the whole line would otherwise be too long, is accepted.

@example

# bad
blah do |i| foo(i)
  bar(i)
end

# bad
blah do
  |i| foo(i)
  bar(i)
end

# good
blah do |i|
  foo(i)
  bar(i)
end

# bad
blah { |i| foo(i)
  bar(i)
}

# good
blah { |i|
  foo(i)
  bar(i)
}

# good
blah { |
  long_list,
  of_parameters,
  that_would_not,
  fit_on_one_line
|
  foo(i)
  bar(i)
}