FreedomFormatter.format_string-exclamation-mark

You're seeing just the function format_string-exclamation-mark, go back to FreedomFormatter module for more information.
Link to this function

format_string!(string, opts \\ [])

View Source (since 1.6.0)

Specs

format_string!(
  binary(),
  keyword()
) :: iodata()

See Code.format_string!/2