SyntaxSuggest::DisplayCodeWithLineNumbers#format

# File tmp/rubies/ruby-3.3.0/lib/syntax_suggest/display_code_with_line_numbers.rb, line 50
        def format(contents:, number:, empty:, highlight: false)
  string = +""
  string << if highlight
    "> "
  else
    "  "
  end

  string << number.rjust(@digit_count).to_s
  if empty
    string << contents
  else
    string << "  "
    string << TERMINAL_HIGHLIGHT if @terminal && highlight
    string << contents
    string << TERMINAL_END if @terminal
  end
  string
end