How to separate a heredoc from other key-value pairs in a hash literal in Ruby?

Question

I just wanted to use a heredoc as a value in a hash literal. While it works fine if the heredoc is the very last element:

{
  foo: 123,
  bar: <<-HEREDOC
    a longer text
  HEREDOC
}
#=> {:foo=>123, :bar=>"    a longer text\n"}

I couldn't find a way to add another key-value pair after the heredoc. Or, more specifically, I couldn't find a way to insert the separating comma without causing a syntax error:

{
  foo: 123,
  bar: <<-HEREDOC
    a longer text
  HEREDOC
  # <- causes a syntax error because a comma is missing here, but where to put it?
  baz: 456
}

Answer 1

This seems to work

{
  foo: 123,
  bar: <<-HEREDOC,
    a longer text
  HEREDOC
  baz: 456
}