Surround a heredoc with quotes and you can continue the code on the same line:
 
    render :status => 404, :text => <<-'EOH' and return unless setup
        article not found<br/>
        I, as a server, have failed<br/>
        https?
        EOH
 
Quotes also give you more freedom/creativity with the terminal ID:
 
    eval <<-"end;"
      def #{foo}
        bar
      end
    end;
 
Also, you can include multiple Heredocs on the same line:
 
    puts <<-"end:foo", <<-"end:bar"
      This is the first chunk to be printed,
      and is separate than the Bar group.
      Foo!
    end:foo
      This is logically separate from the foo group.
      There's nothing special about the identifiers,
      they just are more appropriately named.
    end:bar